WO2023163166A1 - Cutting machine - Google Patents

Abstract

A cutting machine 10 comprises a tool stocker 80 for storing a cutting tool 6, a cutting device 50 provided with a spindle 51 having a holding part 53 for holding a top part 6T of the cutting tool 6, and a control device 100, the tool stocker 80 comprising a pressing member 82 against which a tip part 6B of the cutting tool 6 is pressed, and the control device 100 being provided with a temporary holding part 108 for closing the holding part 53 to temporarily hold the cutting tool 6 after the top part 6T of the cutting tool 6 has been inserted a first length L1 into the holding part 53, and a main holding part 109 for closing the holding part 53 to perform main holding of the cutting tool 6 after the top part 6T of the cutting tool 6 has been inserted a second length L2, which is greater than the first length L1, into the holding part 53 in a state in which the tip part 6B of the cutting tool 6 is pressed against the pressing member 82.

Description

cutting machine

The present invention relates to a cutting machine.
This application claims priority based on Japanese Patent Application No. 2022-29382 filed on February 28, 2022, and the entire contents of that application are incorporated herein by reference. there is

Conventionally, there has been known a cutting machine that cuts an object to be cut by rotating a cutting tool around an axis. As a cutting machine of this type, for example, Patent Document 1 discloses a cutting machine comprising a spindle having a gripping portion for gripping a cutting tool for cutting an object to be cut, and a holding portion for holding the object to be cut. is disclosed. The cutting machine has an automatic tool changer (auto tool changer) that automatically changes multiple cutting tools with different cutting part shapes in order to automatically and continuously perform various cutting processes in a single operation. Equipped with Auto Tool Changer (ATC). A plurality of cutting tools are stored in, for example, a tool stocker.

Japanese Patent Application Publication No. 2017-13155

By the way, when replacing the cutting tool gripped by the gripping portion of the spindle using ATC, the spindle is moved above the cutting tool to be replaced, and the spindle is lowered while the gripping portion is open. Insert the top of the cutting tool into the grip. Then, by closing the gripping portion, the top portion of the cutting tool is gripped by the gripping portion. However, since the cutting tool stored in the tool stocker and the spindle may be slightly misaligned or misaligned, the cutting tool may be slightly tilted when it is inserted into the grip. In this case, there is a problem that the run-out accuracy of the cutting tool is lowered and the cutting quality is lowered.

The present invention has been made in view of this point, and its object is to provide a cutting machine in which the cutting tool gripped by the gripping portion of the spindle has excellent run-out accuracy.

A cutting machine according to the present invention includes a tool stocker capable of storing a plurality of rod-shaped cutting tools, a gripping section configured to be openable and closable and gripping the tops of the cutting tools stored in the tool stocker, and A cutting device for cutting an object to be cut with the cutting tool, a moving device for moving the cutting device, and a control device for controlling the cutting device and the moving device. and have. The tool stocker includes a main body portion formed with a plurality of storage holes capable of accommodating the cutting tools, and a pressing member provided on the upper surface of the main body portion and against which the tip end portion of the cutting tool is pressed. ing. The control device lowers the cutting device while the gripping portion is open, inserts the top portion of the cutting tool into the gripping portion by a first length, and then closes the gripping portion to close the cutting tool. A temporary gripping portion that temporarily grips a cutting tool, and a state in which the gripping portion is opened after moving the cutting device so that the tip portion of the temporarily gripped cutting tool is positioned above the pressing member. lowers the cutting device with the tip portion of the cutting tool pressed against the pressing member, and moves the top portion of the cutting tool to the holding portion to a second length longer than the first length. and a main gripping portion that closes the gripping portion after the cutting tool is inserted by a certain amount to fully grip the cutting tool.

According to the cutting machine of the present invention, the temporary gripping portion temporarily grips the cutting tool by closing the gripping portion after inserting the top portion of the cutting tool into the gripping portion by the first length. That is, the gripper grips the top of the cutting tool shallower than usual. Then, the main gripping portion inserts the top portion of the cutting tool into the gripping portion by the second length while pressing the cutting tool temporarily gripped by the gripping portion against the pressing member in a state where the gripping portion is open. As a result, even if the cutting tool is gripped with an inclination with respect to the gripping portion during temporary gripping, the inclination is eliminated. That is, the run-out accuracy of the cutting tool is improved, and an improvement in cutting quality can be achieved.

According to the present invention, it is possible to provide a cutting machine in which the cutting tool gripped by the gripping portion of the spindle has excellent deflection accuracy.

FIG. 1 is a perspective view of a cutting machine according to one embodiment. FIG. 2 is a plan view of the workpiece and the adapter. FIG. 3 is a vertical cross-sectional view of the cutting machine viewed from the left. FIG. 4 is a longitudinal sectional view of the cutting machine viewed from the right side. FIG. 5 is a plan view of the work holder. FIG. 6 is a longitudinal sectional view showing the cutting machine during replacement of the adapter. FIG. 7 is a perspective view of the cutting device chamber and the drive device chamber. FIG. 8 is a plan view of the tool stocker. FIG. 9 is a partially broken side view of the vicinity of the lower end of the cutting device. FIG. 10 is a side view of the vicinity of the tip of the cutting device when the cutting tool is replaced. FIG. 11 is a block diagram of a cutting machine. FIG. 12 is a sectional view showing the positional relationship between the air blow nozzle and the ceiling wall of the processing chamber. FIG. 13 is a flow chart showing a control procedure for air injection from the air blow nozzle. FIG. 14 is a side view showing a state in which the top of the cutting tool is inserted into the grip by the first length. FIG. 15 is a perspective view showing a state where the tip of the cutting tool is pressed against the pressing member. FIG. 16 is a side view showing a state in which the top of the cutting tool is inserted into the grip by the second length. FIG. 17 is a flow chart showing the procedure for exchanging the cutting tool.

An embodiment of a cutting machine according to the present invention will be described below with reference to the drawings. It should be noted that the embodiments described herein are, of course, not intended to limit the invention in particular. Further, members and portions having the same function are denoted by the same reference numerals, and overlapping descriptions are appropriately omitted or simplified.

[Configuration of cutting machine]
FIG. 1 is a perspective view of a cutting machine 10 according to one embodiment. In the following description, when the cutting machine 10 is viewed from the front, the side away from the cutting machine 10 is defined as the front, and the side closer to the cutting machine 10 is defined as the rear. Left, right, top, and bottom mean left, right, top, and bottom, respectively, when the cutting machine 10 is viewed from the front. References F, Rr, L, R, U, and D in the drawings mean front, rear, left, right, up, and down, respectively.

FIG. 2 is a plan view of the workpiece 1 and the adapter 5. FIG. A cutting machine 10 according to this embodiment is a cutting machine that cuts a disk-shaped workpiece 1 held by an adapter 5 . Here, the cutting machine 10 cuts the workpiece 1 to produce dental moldings such as crowns, bridges, copings, inlays, onlays, veneers, custom abutments and other prosthetic crowns, and artificial teeth. , denture base, etc. The cutting machine 10 according to this embodiment is a dry cutting machine that does not use coolant.

The workpiece 1 is made of, for example, resins such as PMMA, PEEK, glass fiber reinforced resin, hybrid resin, etc., ceramic materials such as glass ceramics and zirconia, metal materials such as cobalt chromium sinter metal, wax, gypsum, and the like. there is When zirconia is used as the material of the object 1 to be cut, for example, semi-sintered zirconia is used. The object 1 to be cut is formed in a flat plate shape. Here, the shape of the object 1 to be cut is disc-shaped. However, the object 1 to be cut may have another shape, such as a block shape (for example, a cube shape or a rectangular parallelepiped shape). Hereinafter, the front surface of the object 1 to be cut is referred to as a first surface 1A (see FIG. 2), and the back surface is referred to as a second surface 1B (see FIG. 2). The distinction between the first surface 1A and the second surface 1B is for convenience, and in the present embodiment, the first surface 1A and the second surface 1B of the workpiece 1 before machining are the same. However, the first surface 1A and the second surface 1B of the workpiece 1 before machining may be configured to be distinguishable.

As shown in FIG. 2, the adapter 5 holds the disk-shaped workpiece 1. As shown in FIG. Here, the adapter 5 is a plate-like adapter in which a substantially circular insertion hole 5a corresponding to the object 1 to be cut is formed in the center. The object 1 to be cut is held by the adapter 5 by being inserted into the insertion hole 5a. The object 1 to be cut is accommodated in the cutting machine 10 while being held by the adapter 5, and processed.

FIG. 3 is a vertical cross-sectional view of the cutting machine 10 viewed from the left. FIG. 4 is a longitudinal sectional view of the cutting machine 10 as seen from the right side. As shown in FIG. 1, the cutting machine 10 has a box-shaped housing 11 . Inside the housing 11 are a processing chamber 120 (see also FIG. 3) in which a work holder 20 holding the adapter 5 (see FIG. 2) is accommodated, and a holder moving device 30 (see FIG. 4) for moving the work holder 20. and a cutting device chamber 150 (see FIG. 3) in which a cutting device 50 (see FIG. 3), an air blow device 55 (see FIG. 3), and a moving device 60 (see FIG. 3) are accommodated. , a changer chamber 170 housing a work changer 70, and a tool exchange chamber 180 for storing the cutting tool 6 (see FIG. 7) in the tool stocker 80 (see FIG. 7). there is The drive chamber 130 is an example of a first chamber. Processing chamber 120 is an example of a second chamber.

As shown in FIG. 1, the processing chamber 120 is arranged in the lower left portion of the housing 11. As shown in FIG. 3, the processing chamber 120 extends to the rear end of the housing 11. As shown in FIG. The changer chamber 170 is arranged above the front portion of the processing chamber 120 . The changer chamber 170 extends to the central portion of the housing 11 in the front-rear direction. The drive chamber 130 is arranged to the right of the processing chamber 120 . As shown in FIG. 4 , the drive chamber 130 extends to the rear end of the housing 11 . The tool exchange chamber 180 is arranged above the front portion of the drive chamber 130 . The tool exchange chamber 180 extends to the central portion of the housing 11 in the front-rear direction. In addition, the drive device chamber 130 may be arranged on the left side of the processing chamber 120 . In that case, the tool exchange chamber 180 may be arranged to the left of the changer chamber 170 . As shown in FIGS. 3 and 4 , the cutting device chamber 150 is arranged above the processing chamber 120 and the drive device chamber 130 and behind the changer chamber 170 and the tool exchange chamber 180 . The cutting device chamber 150 here occupies almost the entire width of the housing 11 in the left-right direction.

As shown in FIG. 1, a front opening 121 (see FIG. 3) of the processing chamber 120 is provided with a processing chamber door 122 that can be opened and closed. A front opening 131 (see FIG. 4) of the driving device chamber 130 is provided with a driving device chamber door 132 . A front opening 171 (see FIG. 3) of the changer chamber 170 is provided with a changer chamber door 172 that can be opened and closed. A front opening 181 (see FIG. 4) of the tool exchange chamber 180 is provided with a tool exchange chamber door 182 that can be opened and closed. The processing chamber door 122, the changer chamber door 172, and the tool exchange chamber door 182 are provided with transparent windows 122a, 172a, and 182a, respectively, so that the inside can be visually recognized. An operation panel 110 is provided on the front surface of the drive device chamber door 132 . As shown in FIGS. 3 and 4, the front surface of the housing 11 (here, front openings 121, 131, 171, 181 of the processing chamber 120, the drive chamber 130, the changer chamber 170, and the tool exchange chamber 180) are , are formed obliquely with respect to the bottom surface. The front surface of the housing 11 is formed so as to incline backward.

The work holder 20 is an example of a holding device that holds the object 1 to be cut by the cutting tool 6 (see FIG. 9). The work holder 20 here holds the workpiece 1 via the adapter 5 . However, the work holder 20 may directly hold the workpiece 1 without using other members. FIG. 5 is a plan view of the work holder 20. FIG. As shown in FIG. 5, the work holder 20 has a pair of left and right arms 21 . The adapter 5 is held by the work holder 20 by being inserted between the pair of arms 21 . The operation of the cutting machine 10 when the adapter 5 is inserted between the pair of arms 21 will be described later.

As shown in FIG. 5 , the holder moving device 30 supports and moves the work holder 20 . In this embodiment, the holder moving device 30 moves the work holder 20 in the front-rear direction. More specifically, as shown in FIG. 4, the holder moving device 30 moves the work holder 20 (see FIG. 3) obliquely forward and backward so as to descend backward. When the work holder 20 is moved forward by the holder moving device 30, it also moves upward. When the work holder 20 is moved backward by the holder moving device 30, it also moves downward. Hereinafter, the direction in which the work holder 20 is moved by the holder moving device 30 is also referred to as the X-axis direction. Further, hereinafter, the front in the X-axis direction may be simply referred to as the front, and the rear in the X-axis direction may simply be referred to as the rear, unless otherwise specified.

As shown in FIG. 5, the holder moving device 30 includes a support arm 31 that extends in the left-right direction and supports the work holder 20. As shown in FIG. As shown in FIG. 4, the holder moving device 30 includes an X-axis moving body 32 connected to a support arm 31, a pair of X-axis guide rails 33, an X-axis driving motor 34, a ball screw 35, It has The holder moving device 30 moves the work holder 20 in the X-axis direction by moving the support arm 31 in the X-axis direction. At least part of the holder moving device 30 is housed in the driving device chamber 130 . Here, the X-axis direction moving body 32, the pair of X-axis guide rails 33, the X-axis direction drive motor 34, the ball screw 35, and part of the support arm 31 of the holder moving device 30 are accommodated in the drive device chamber 130. there is

As shown in FIG. 4, the pair of X-axis guide rails 33 extends in the X-axis direction. The X-axis moving body 32 is slidably engaged with a pair of X-axis guide rails 33 . The X-axis direction moving body 32 can move in the X-axis direction along the X-axis guide rails 33 . The ball screw 35 extends in the X-axis direction. The ball screw 35 is meshed with a nut provided on the X-axis moving body 32 . The X-axis direction drive motor 34 rotates the ball screw 35 around the axis. When the X-axis driving motor 34 is driven to rotate the ball screw 35 , the X-axis moving body 32 moves along the X-axis guide rail 33 in the X-axis direction. Note that the holder moving device 30 is not limited to having a ball screw mechanism, and may have, for example, a timing belt or a wire.

As shown in FIG. 5, the support arm 31 includes a rotating shaft 31a that rotates about an axis AXb that extends in the left-right direction, and a rotating shaft 31a that is connected to the rotating shaft 31a so as to be orthogonal to the axis AXb and rotates in the front-rear direction together with the rotating shaft 31a. 1 arm 31b and a second arm 31c connected to the first arm 31b parallel to the axis AXb (perpendicular to the first arm 31b). As shown in FIG. 4, the X-axis moving body 32 is provided with a B-axis rotating motor 41B that rotates a rotating shaft 31a (see FIG. 5) around the axis AXb. When the B-axis rotating motor 41B is driven to rotate the rotating shaft 31a, the work holder 20 rotates in the front-rear direction. Hereinafter, the extension direction of the axis AXb is also referred to as the B-axis direction, and rotation about the axis AXb is also referred to as rotation about the B-axis. Among the rotating devices 40, a device that rotates the work holder 20 around the B-axis is also called a B-axis rotating device 40B.

As shown in FIG. 5, the rotating device 40 also includes an A-axis rotating device 40A that rotates the work holder 20 in the left-right direction. As shown in FIG. 5, the A-axis rotating device 40A includes an A-axis rotating motor 41A and a rotating shaft 42A. The A-axis rotary motor 41A is fixed to the second arm 31c. The rotary shaft 42A is connected to an A-axis rotary motor 41A (more specifically, a drive unit including the A-axis rotary motor 41A) and extends in the front-rear direction along the axis AXa. When the A-axis rotary motor 41A is driven, the rotary shaft 42A rotates around the axis AXa. Hereinafter, the extension direction of the axis AXa is also referred to as the A-axis direction, and rotation about the axis AXa is also referred to as rotation about the A-axis.

The processing chamber 120 is partitioned by a plurality of walls and accommodates the work holders 20 . As shown in FIG. 3, the plurality of walls includes a bottom wall 120D, a left wall 120L (see FIG. 1), a right wall 120R, a rear wall 120Rr, a front wall 120F, and a top wall 120U, here formed by metal plates. It is The bottom wall 120</b>D is arranged below the work holder 20 and forms the bottom surface of the processing chamber 120 . The bottom wall 120D is configured to be substantially horizontal when the cutting machine 10 is installed on a horizontal surface. The ceiling wall 120U is arranged above the work holder 20 and forms the ceiling of the processing chamber 120. As shown in FIG. The left side wall 120L, the right side wall 120R, the rear wall 120Rr, and the front wall 120F are erected to connect the top wall 120U and the bottom wall 120D. The left side wall 120L is connected to the left end of the bottom wall 120D and extends upward. The left side wall 120L is erected to the left of the work holder 20. As shown in FIG. The right side wall 120R is connected to the right end of the bottom wall 120D and extends upward. The right side wall 120</b>R is erected to the right of the work holder 20 . The rear wall 120Rr is connected to the rear end of the bottom wall 120D and extends upward. The left and right ends of the rear wall 120Rr are connected to the rear ends of the left and right walls 120L and 120R, respectively. The rear wall 120Rr is erected behind the work holder 20. As shown in FIG. The front wall 120F is connected to the front end of the bottom wall 120D and extends obliquely upward. The front wall 120</b>F is erected forward of the work holder 20 . The front wall 120F extends to tilt rearward. The extending direction of the front wall 120F is a direction orthogonal to the X-axis direction. The left end and right end of the front wall 120F are connected to the front end of the left side wall 120L and the right side wall 120R, respectively. The ceiling wall 120U extends in a direction orthogonal to the front wall 120F, that is, parallel to the X-axis direction. The ceiling wall 120U is inclined downward toward the rear. The ceiling wall 120U is provided non-parallel to the bottom wall 120D. The front end, left end, right end and rear end of the ceiling wall 120U are connected to the upper end of the front wall 120F, left wall 120L, right wall 120R and rear wall 120Rr, respectively. ing.

As shown in FIG. 3, a front opening 121 is formed in the front wall 120F of the processing chamber 120. As shown in FIG. As described above, the front opening 121 is provided with the processing chamber door 122 that can be opened and closed. The front opening 121 extends upward from a position above the lower end of the front wall 120F. The vicinity of the lower end of the front wall 120F forms a corner that is not open to the outside.

As shown in FIGS. 3 and 4, the right side wall 120R separates the processing chamber 120 and the driving device chamber 130. The right side wall 120R of the processing chamber 120 is also the left side wall of the drive chamber 130 . A slit 123 extending in the X-axis direction and through which the support arm 31 of the holder moving device 30 passes is formed in the right side wall 120R. The slit 123 is an opening through which the support arm 31 is inserted. As shown in FIG. 3 , a dust-proof plate 36 is fixed to the support arm 31 to prevent cutting dust generated in the machining chamber 120 from entering the driving device chamber 130 . The dustproof plate 36 is provided so as to cover at least part of the slit 123 and moves in the X-axis direction together with the support arm 31 . The dust-proof plate 36 is fixed to a portion of the support arm 31 positioned inside the processing chamber 120 and provided inside the processing chamber 120 . The dustproof plate 36 here is configured to cover different portions of the slit 123 according to the position of the support arm 31 in the X-axis direction.

FIG. 3 illustrates a state in which the work holder 20 is retracted to the rearmost position in the X-axis direction. FIG. 3 illustrates a state in which the work holder 20 is positioned at the end position on the rear side. FIG. 6 is a longitudinal sectional view showing the cutting machine 10 during replacement of the adapter 5 (see FIG. 2). Although the details of FIG. 6 will be described later, FIG. 6 illustrates a state in which the work holder 20 has moved forward most forward in the X-axis direction, that is, a state in which it is positioned at the front end position. As shown in FIG. 6, the dust-proof plate 36 covers the rear end of the slit 123 even when the support arm 31 (see FIG. 5) is positioned at the front end position in the X-axis direction. is configured to As will be described later, in the machining chamber 120 , there is a tendency for cutting dust to gather behind the work holder 20 due to the flow of air. Therefore, the dust-proof plate 36 covers the rear end of the slit 123 even when the support arm 31 is positioned at the front end position in the X-axis direction. On the other hand, as shown in FIG. 3, when the support arm 31 (see FIG. 5) is positioned at the rear end position, the dust-proof plate 36 is positioned rearward of the front end of the slit 123. . The dust-proof plate 36 opens more of the front side of the slit 123 as the support arm 31 approaches the rear end position. This is because cutting dust tends to collect behind the work holder 20 due to the flow of air in the machining chamber 120 , and there is less cutting dust in the front of the work holder 20 . As a result, the length of the dustproof plate 36 is shortened. This prevents the processing chamber 120 from becoming longer toward the front. A part of the front side of the slit 123 is open regardless of the position of the work holder 20 . As will be described later, this causes a flow of air from the drive device chamber 130 toward the processing chamber 120 .

As shown in FIG. 3, the ceiling wall 120U partitions the processing chamber 120 and the changer chamber 170, and also partitions the processing chamber 120 and the cutting device chamber 150. A front opening 124 that communicates the processing chamber 120 and the changer chamber 170 and a rear opening 125 that communicates the processing chamber 120 and the cutting device chamber 150 are opened in the ceiling wall 120U. The front side portion of the ceiling wall 120U of the processing chamber 120 is also the bottom wall of the changer chamber 170. As shown in FIG. The front opening 124 is formed below the changer chamber 170 . The front side opening 124 is an opening through which the workpiece 1 conveyed by the conveying device 72 of the work changer 70 can pass. As will be described later, here, the transport device 72 transports the adapter storage portion 71 containing the adapter 5 from the front side opening portion 124 to the processing chamber 120 .

As shown in FIG. 3, the rear side portion of the ceiling wall 120U of the processing chamber 120 is also the left side portion of the bottom wall of the cutting device chamber 150. The rear opening 125 is formed below the cutting device chamber 150 . The rear opening 125 is an opening through which at least part of the cutting device 50, here the lower part of the spindle 51, can pass. The cutting tool 6, the air blow nozzle 56, and part of the spindle 51 pass through the rear opening 125 when the spindle 51 is moved in the Z-axis direction (see FIG. 3) by a Z-axis direction moving device 60Z, which will be described later. It is an opening. Although the details will be described later, the rear side opening 125 extends above the driving device chamber 130 so as to allow the driving device chamber 130 and the cutting device chamber 150 to communicate with each other (see FIG. 7).

As shown in FIG. 3, the bottom wall 120D of the processing chamber 120 includes a substantially horizontal bottom portion 126 and a slope 127 connected to the rear end portion of the bottom portion 126 and extending rearward therefrom. there is The slope 127 is inclined upward toward the rear. The slope 127 and the bottom 126 are connected so as to bend. The slope 127 is connected to the rear wall 120Rr. A space is formed below the slope 127 .

As shown in FIG. 3, an exhaust port 128 is opened in the bottom wall 120D. A dust collector 111 (see FIG. 11) is connected to the exhaust port 128 via an exhaust duct 92 or the like, which will be described later. Air and dust in the processing chamber 120 are discharged from the exhaust port 128 . The exhaust port 128 is provided on the slope 127 . More specifically, the exhaust port 128 opens along the connecting portion of the slope 127 with the rear wall 120Rr. A rear edge of the exhaust port 128 is formed by a rear wall 120Rr. The exhaust port 128 is provided at the rearmost part of the slope 127 . The slope 127 is inclined upward toward the exhaust port 128 .

As shown in FIG. 5 , the exhaust port 128 opens to the rear of the work holder 20 . As a result, a wind flows from the front to the rear across the work holder 20 . At least a portion of the slope 127 overlaps at least a portion of the work holder 20 in plan view (see also FIG. 3). As a result, fragments of the object to be cut 1 dropped by cutting fall onto the slope 127 . Among the fragments of the workpiece 1 that have fallen onto the slope 127 , large pieces slide down the slope 127 without being sucked into the exhaust port 128 even by suction from the exhaust port 128 . As a result, the larger fragments of the object 1 to be cut are sorted out.

As shown in FIG. 5, the exhaust port 128 is deviated to the right of the horizontal center line CL of the processing chamber 120 (which may or may not coincide with the A axis). are provided. In other words, the exhaust port 128 is provided so as to deviate from the center line CL of the processing chamber 120 in the left-right direction toward the driving device chamber 130 . As a result, dust (cutting powder) and the like near the drive device chamber 130 are discharged intensively. The exhaust port 128 is a single slit that opens upward. The exhaust port 128 is formed in a substantially rectangular shape whose length in the left-right direction is longer than its length in the front-rear direction.

As shown in FIG. 3, a dust collection chamber 90 is provided below the exhaust port 128 in this embodiment. Dust collection chamber 90 is fixed to the lower surface of slope 127 . The dust collection chamber 90 is a box-shaped member with an open top, and an upward opening 90U is connected to the exhaust port 128 . As shown in FIGS. 3 and 5, the dust collection chamber 90 includes an upper opening 90U, a bottom wall 90D, a front wall 90F, and a left side wall 90L. A rear wall and a right side wall of the dust collection chamber 90 are formed by a rear wall 120Rr and a right side wall 120R of the processing chamber 120, respectively. However, the dust collection chamber 90 may have a rear wall and a right side wall that are not shared with the processing chamber 120 . An internal space is formed in the dust collection chamber 90 by the bottom wall 90D, the front wall 90F, the left wall 90L, the rear wall 120Rr of the processing chamber 120, and the right wall 120R of the processing chamber 120. As shown in FIG. 5, the internal space of the dust collection chamber 90 is larger than the exhaust port 128 in plan view.

An upper opening 90U and a duct connection hole 91 are formed in the dust collection chamber 90 . The duct connection hole 91 is an opening to which the exhaust duct 92 is connected. As shown in FIG. 3 , the cutting machine 10 has an exhaust duct 92 connected to the duct connection hole 91 . The duct connection hole 91 here opens to the rear wall of the dust collection chamber 90 (the rear wall 120Rr of the processing chamber 120). The opening direction of the upper opening 90U (exhaust port 128) and the opening direction of the duct connection hole 91 intersect. However, the duct connection hole 91 may open to another side wall of the dust collection chamber 90 (for example, the right side wall 120R). A front end portion of the exhaust duct 92 is connected to the duct connection hole 91 . The exhaust duct 92 communicates with the exhaust port 128 and the processing chamber 120 via the dust collection chamber 90 . A rear end portion of the exhaust duct 92 extends to the outside of the cutting machine 10 . A dust collector 111 (see FIG. 11) is connected to the rear end of the exhaust duct 92 . As shown in FIG. 5, the dust collection chamber 90 and the exhaust duct 92 are also positioned to the right of the center line CL in the left-right direction of the processing chamber 120, in other words, the driving device is positioned further to the center line CL in the left-right direction of the processing chamber 120. As shown in FIG. It is provided so as to be biased toward the chamber 130 side.

The work changer 70 is configured to accommodate a plurality of workpieces 1 to be cut, and is used to replace the workpiece 1 to be machined. As shown in FIG. 3, the work changer 70 includes an adapter storage section 71 capable of storing a plurality of workpieces 1 (here, the adapters 5 to which the workpieces 1 are attached; see FIG. 2); 71 to the processing chamber 120. For example, the adapter housing portion 71 is housed in the changer chamber 170 except when the workpiece 1 to be cut is changed. As shown in FIG. 1, the adapter storage section 71 is provided with a plurality of shelf-like storage spaces 71a each accommodating one adapter 5. As shown in FIG. The plurality of storage spaces 71a are arranged vertically. More specifically, the plurality of storage spaces 71a are arranged side by side in an oblique vertical direction (hereinafter also referred to as the L-axis direction, see FIG. 3) orthogonal to the X-axis direction.

As shown in FIG. 3, the transport device 72 includes a slide arm 72A extending in the L-axis direction, an L-axis direction drive motor 72B, and a ball screw 72C. The slide arm 72A is fixed to the adapter housing portion 71 and is slidable in the L-axis direction. A ball screw 72C is engaged with the slide arm 72A. The L-axis drive motor 72B is connected to the ball screw 72C and rotates the ball screw 72C. When the L-axis direction drive motor 72B is driven to rotate the ball screw 72C, the slide arm 72A moves in the L-axis direction. As a result, the adapter housing portion 71 moves in the L-axis direction.

FIG. 6 shows a state in which the adapter housing portion 71 is lowered into the processing chamber 120. FIG. The adapter housing portion 71 moves into the processing chamber 120 through the front opening 124 of the processing chamber 120 . As shown in FIG. 6, the adapter 5 is held by the work holder 20 when the work holder 20 advances forward in the X-axis direction and plunges into the storage space 71a (see FIG. 1) of the adapter 5. As shown in FIG. In the present embodiment, the conveying device 72 conveys a plurality of workpieces 1 to the processing chamber 120 by conveying the adapter storage portion 71 to the processing chamber 120, but the configuration of the conveying device 72 is limited to this. not. The transport device 72 may be configured to transport at least one of the plurality of objects 1 to be cut stored in the adapter storage portion 71 to the processing chamber 120 . For example, the conveying device 72 may be configured to grip and take out the workpiece 1 in the storage space 71 a of the fixed adapter storage portion 71 and transfer it to the work holder 20 .

As shown in FIG. 3, the cutting device 50 is housed in a cutting device chamber 150. The cutting device 50 cuts the workpiece 1 held by the work holder 20 with the cutting tool 6 . The cutting device 50 is provided above the work holder 20 and the tool stocker 80 (see FIG. 7). The cutting device 50 has a spindle 51 that grips and rotates the cutting tool 6 . The spindle 51 includes a rotating unit 52 and a gripping portion 53 provided at the lower end of the rotating unit 52 . The rotation unit 52 extends in a direction orthogonal to the X-axis direction (here, parallel to the L-axis direction). Hereinafter, this direction will also be referred to as the Z-axis direction. The rotation unit 52 rotates the grasping part 53 around an axis parallel to the Z-axis direction. The rotation unit 52 here is a unit with a built-in motor. However, the rotation unit 52 may be connected to an external motor and a belt, for example. The grip portion 53 is configured to be openable and closable. The gripping portion 53 grips the cutting tool 6 so as to protrude downward in the Z-axis direction. More specifically, the gripping portion 53 grips the top portion 6T (see FIG. 10) of the cutting tool 6 stored in the tool stocker 80 (see FIG. 7). The gripping part 53 is, for example, an air-driven collet chuck. However, the method of the grip portion 53 is not particularly limited.

9 is a partially broken perspective view of the vicinity of the lower end of the cutting device 50. FIG. As shown in FIG. 9, the air blow device 55 is provided on the spindle 51. As shown in FIG. The air blow device 55 has an air blow nozzle 56 that injects air and a nozzle support member 57 that supports the air blow nozzle 56 . The air blow nozzle 56 is provided on the side of the grip portion 53 of the spindle 51 . The nozzle support member 57 is provided above the grip portion 53 in the Z-axis direction. The nozzle support member 57 is provided integrally with the spindle 51 . The nozzle support member 57 is fixed to the rotation unit 52 here. The nozzle support member 57 supports the air blow nozzle 56 so as to be movable in the Z-axis direction. Specifically, the nozzle support member 57 is positioned above the Z-axis direction lower end position Pd (the position shown in FIG. 9, also referred to as the lower end position Pd) and the lower end position Pd in the Z-axis direction. It supports the air blow nozzle 56 so as to be movable between other positions. A lower end position Pd of the air blow nozzle 56 is set to the side of the grip portion 53 . At the lower end position Pd, the grip portion 53 and the air blow nozzle 56 are aligned in the X-axis direction.

As shown in FIG. 9, the nozzle support member 57 includes a guide hole 57a through which the air blow nozzle 56 is inserted, and a stopper 57b that restricts the movement of the air blow nozzle 56 below the lower end position Pd. ing. The air blow device 55 also includes a biasing member 58 that biases the air blow nozzle 56 supported by the nozzle support member 57 to hold the air blow nozzle 56 at the lower end position Pd. The biasing member 58 is here a coil spring. However, the biasing member 58 is not limited to a coil spring, and may be an air cylinder or the like. The air blow nozzle 56 has a contact portion 56a that contacts the stopper 57b at the lower end position Pd. The stopper 57b and the biasing member 58 hold the air blow nozzle 56 at the lower end position Pd. Further, when the air blow nozzle 56 is pushed upward along the Z axis, it moves upward along the Z axis along the guide hole 57a against the biasing force of the biasing member 58 .

The air blow nozzle 56 is provided above the work holder 20 and configured to blow air downward (here, vertically downward). The air blowing device 55 blows air downward in the vertical direction. As a result, air is obliquely blown against the cutting tool 6 held by the holding portion 53 . However, the air blow nozzle 56 may inject air in other directions. The air blow nozzle 56 has a cut surface 56b formed on its side wall and extending obliquely in the Z-axis direction. The cut surface 56b has an inclination that approaches the grip portion 53 downward in the Z-axis direction. Here, the cut surface 56b extends obliquely upward from the lower end of the air blow nozzle 56. As shown in FIG.

When the cutting tool 6 gripped by the gripping portion 53 of the spindle 51 is returned to the tool stocker 80, or when the cutting tool 6 of the tool stocker 80 is gripped by the gripping portion 53, the Z-axis direction moving device 60Z moves to the tool stocker. The gripper 53 is moved to a predetermined position in the Z-axis direction (hereinafter also referred to as work position Po) set to grip or release the cutting tool 6 housed in the housing 80 . FIG. 10 is a perspective view of the vicinity of the tip of the cutting device 50 when the cutting tool 6 is replaced. FIG. 10 illustrates a state in which the grip portion 53 is positioned at the working position Po. As shown in FIG. 10, the air blow nozzle 56 contacts the tool stocker 80 when the grip portion 53 is positioned at the working position Po in the Z-axis direction. At this time, the air blow nozzle 56 is pushed by the tool stocker 80 and positioned above the lower end position Pd in the Z-axis direction against the biasing force of the biasing member 58 .

When the air blow nozzle 56 is not in contact with the tool stocker 80, it is positioned at the lower end position Pd lower in the Z-axis direction than when it is in contact with the tool stocker 80. Accordingly, when the workpiece 1 is machined or cleaned, or when the machining chamber 120 is cleaned (the air blow device 55 is configured to inject air into the machining chamber 120 and the work holder 20, the machining chamber 120 is ), the air blow nozzle 56 can be brought close to the tip 6B of the cutting tool 6 or the like. On the other hand, when the air blow nozzle 56 is at the lower end position Pd, when the cutting tool 6 attached to the grip portion 53 of the spindle 51 is returned to the tool stocker 80 or the cutting tool 6 of the tool stocker 80 is attached to the grip portion 53 When doing so, the long air blow nozzle 56 interferes with the tool stocker 80 and the cutting tool 6 . Therefore, in this embodiment, the air blow device 55 is configured to move upward (shrink) when the air blow nozzle 56 is pushed upward in the Z-axis direction.

The cut surface 56b of the air blow nozzle 56 is provided so that the air blow nozzle 56 moves upward when an object pushes the air blow nozzle 56 from the side. When an object presses the cut surface 56b from the side, part of the pressing force is converted into an upward force in the Z-axis direction by the cut surface 56b, and the air blow nozzle 56 moves upward.

As shown in FIG. 3 , a moving device 60 for moving the cutting device 50 and the air blow device 55 is housed in the cutting device chamber 150 . The moving device 60 is provided above the work holder 20 . The moving device 60 moves the cutting device 50 and the air blow device 55 in the Z-axis direction and the left-right direction. The horizontal direction is a direction orthogonal to the X-axis direction and the Z-axis direction. Hereinafter, the left-right direction is also referred to as the Y-axis direction. The moving device 60 moves the cutting device 50 in the Y-axis direction and the Z-axis direction, and the holder moving device 30 moves the work holder 20 in the X-axis direction. change three-dimensionally. The Z-axis direction is a direction that intersects (here, is perpendicular to) the ceiling wall 120U of the processing chamber 120, and the cutting device 50 and the air blow device 55 appear in the processing chamber 120 by movement in the Z-axis direction, or , retreats into the cutting device chamber 150 . The moving device 60 can move the cutting device 50 and the air blowing device 55 to a position where at least a part thereof is arranged above the work holder 20 and below the ceiling wall 120U. The moving device 60 can move the cutting device 50 and the air blow device 55 between the processing chamber 120 , the cutting device chamber 150 and the driving device chamber 130 .

7 is a perspective view of the cutting device chamber 150 and the driving device chamber 130. FIG. In FIG. 7, some members are omitted so that the insides of the cutting device chamber 150 and the driving device chamber 130 can be seen. As shown in FIG. 7, the moving device 60 includes a Y-axis direction moving device 60Y and a Z-axis direction moving device 60Z. The Y-axis direction moving device 60Y is a device that moves the cutting device 50 and the air blow device 55 in the Y-axis direction. The Z-axis direction moving device 60Z is a device that moves the cutting device 50 and the air blow device 55 in the Z-axis direction. The Y-axis direction moving device 60Y includes a pair of Y-axis guide rails 61Y extending in the Y-axis direction, a Y-axis direction moving body 62Y slidably engaged with the Y-axis guide rails 61Y, and a Y-axis direction driving motor 63Y. , and a ball screw 64Y. A pair of Y-axis guide rails 61Y are provided on the bottom wall of the cutting device chamber 150 (that is, the ceiling wall 120U of the processing chamber 120). The Y-axis guide rail 61Y extends from above the processing chamber 120 to above the driving device chamber 130 . The Y-axis direction moving body 62Y is movable in the Y-axis direction along the Y-axis guide rail 61Y. The Y-axis moving body 62Y can move from above the processing chamber 120 to above the driving device chamber 130 along the Y-axis guide rail 61Y. The Y-axis moving body 62Y supports the Z-axis moving device 60Z. Although not shown, bellows may be provided on the left and right sides of the Y-axis direction moving body 62Y. Both ends of the right bellows are connected to the right end of the Y-axis direction moving body 62Y and the right end of the rear opening 125, respectively. Both ends of the left bellows are connected to the left end of the Y-axis direction moving body 62Y and the left end of the rear opening 125, respectively. The bellows prevents dust and the like from entering the cutting device chamber 150 through the rear opening 125 .

As shown in FIG. 7, the ball screw 64Y extends in the Y-axis direction. The ball screw 64Y is meshed with the Y-axis moving body 62Y. The Y-axis direction drive motor 63Y rotates the ball screw 64Y. When the Y-axis direction drive motor 63Y drives and the ball screw 64Y rotates, the Y-axis direction moving body 62Y moves in the Y-axis direction along the Y-axis guide rail 61Y. As a result, the Z-axis direction moving device 60Z, the cutting device 50, and the air blow device 55 move in the Y-axis direction.

As shown in FIG. 3, the Z-axis direction moving device 60Z includes a pair of Z-axis guide shafts 61Z extending in the Z-axis direction, and slidably engaging the Z-axis guide shafts 61Z to move the cutting device 50 and the air blow device 55. It has a Z-axis direction moving body 62Z to support, a Z-axis direction drive motor 63Z, and a ball screw (not shown). The Z-axis direction moving device 60Z supports the cutting device 50 and the air blow device 55 so as to be movable in the Z-axis direction. The Z-axis direction moving device 60Z moves the cutting device 50 and the air blow device 55 in the Z-axis direction in the same manner as the Y-axis direction moving device 60Y moves the Z-axis direction moving device 60Z.

As shown in FIG. 3, the ceiling wall 150U of the cutting device chamber 150 has an intake port 152 open. The intake port 152 here is composed of a plurality of slits arranged in the left-right direction. However, the shape of the intake port 152 is not particularly limited. The intake port 152 is an opening for drawing outside air into the cutting machine 10 as the air is discharged from the exhaust port 128 . The intake port 152 communicates with the cutting device chamber 150 . In addition, the intake port 152 also communicates with the driving device chamber 130 and the changer chamber 170 via the cutting device chamber 150 . The cutting device chamber 150 and the driving device chamber 130 are communicated with each other through a rear opening 125 (see FIG. 7) opened in the bottom wall of the cutting device chamber 150 (the ceiling wall of the driving device chamber 130). The cutting device chamber 150 and the changer chamber 170 communicate with each other without a partition. The machining chamber 120 communicates with an intake port 152 via a cutting device chamber 150 and a driving device chamber 130 . The drive device chamber 130 and the processing chamber 120 are communicated by a slit 123 opened in the right side wall 120R of the processing chamber 120 (the left side wall of the drive device chamber 130). The machining chamber 120 communicates with the intake port 152 also through the cutting device chamber 150 and the changer chamber 170 . The changer chamber 170 and the processing chamber 120 are communicated with each other through a front opening 124 opened in a ceiling wall 120U of the processing chamber 120 (bottom wall of the changer chamber 170).

The air intake port 152 communicates with the cutting device chamber 150 , the cutting device chamber 150 and the processing chamber 120 communicate with each other through the rear opening 125 , and the exhaust duct 92 communicates with the processing chamber 120 , whereby the dust collector 111 is driven, as shown in FIG. 3, a wind flow F3 is generated from the intake port 152 to the machining chamber 120 via the cutting device chamber 150. As shown in FIG. The internal pressure of the cutting device chamber 150 is higher than the internal pressure of the processing chamber 120 . Therefore, it becomes difficult for cutting dust and the like generated in the processing chamber 120 to enter the cutting device chamber 150 . Similarly, since the intake port 152 communicates with the changer chamber 170 and the changer chamber 170 and the processing chamber 120 communicate with each other through the front opening 124, when the dust collector 111 is driven, as shown in FIG. A wind flow F4 is generated from the intake port 152 to the processing chamber 120 via the changer chamber 170 . The internal pressure of the changer chamber 170 is higher than the internal pressure of the processing chamber 120 . This makes it difficult for cutting powder and the like generated in the processing chamber 120 to enter the changer chamber 170 . Furthermore, the intake port 152 communicates with the driving device chamber 130, and the driving device chamber 130 and the processing chamber 120 communicate with each other through the slit 123, so that when the dust collector 111 is driven, as shown in FIG. A wind flow F5 is generated from 152 (see FIG. 3) toward the processing chamber 120 via the drive chamber 130 . The internal pressure of the drive chamber 130 is higher than the internal pressure of the processing chamber 120 . This makes it difficult for cutting powder and the like generated in the processing chamber 120 to enter the driving device chamber 130 .

As shown in FIG. 7, the tool stocker 80 is housed in the drive chamber 130 in this embodiment. The tool stocker 80 is configured to store a plurality of bar-shaped cutting tools 6 . The plurality of cutting tools 6 are used properly according to, for example, the material of the object 1 to be cut and the type of cutting. The tool stocker 80 is supported by the X-axis moving body 32 . Specifically, the tool stocker 80 is fixed to the upper surface of the X-axis moving body 32 . Conventionally, the tool stocker was supported by the support arm of the holder moving device. Therefore, in the conventional cutting device, the support arm is easily bent, and a large load cannot be applied to the object 1 to be cut during cutting of the object 1 to be cut. Specifically, in consideration of the load due to cutting, the amount of cutting per hour is limited. In this embodiment, the load on the support arm 31 is reduced by supporting the tool stocker 80 on the X-axis moving body 32 .

FIG. 8 is a plan view of the tool stocker 80. FIG. As shown in FIG. 8, the tool stocker 80 includes a body portion 80A formed with a plurality of storage holes 81 capable of storing the cutting tools 6, and a pressing member 82 and a tool 80U provided on the upper surface 80U of the body portion 80A. a sensor 83; The plurality of storage holes 81 are formed so as to pass through the main body portion 80A in the Z-axis direction. The plurality of storage holes 81 are arranged in a zigzag pattern. Specifically, the tool stocker 80 is formed with rows 81A to 81E in which some of the plurality of storage holes 81 are aligned in a predetermined alignment direction (here, the Y-axis direction). , two adjacent columns (for example, column 81A and column 81B) among the plurality of columns 81A to 81E are displaced in the alignment direction. The amount of positional deviation in the alignment direction between two adjacent rows is less than half the pitch of the storage holes 81 in each row 81A to 81E. Due to this zigzag arrangement, the plurality of storage holes 81 are densely arranged. As a result, the storage efficiency of the cutting tool 6 with respect to the space is improved. It should be noted that the plurality of columns 81A to 81E are arranged alternately in the alignment direction.

As shown in FIG. 8, the pressing member 82 is a member against which the tip portion 6B (see FIG. 9) of the cutting tool 6 is pressed. As will be described later, the pressing member 82 is pressed against the tip portion 6B of the cutting tool 6 when the gripping portion 53 of the spindle 51 fully grips the cutting tool 6 . Here, the pressing member 82 is made of a resin material, but may be made of a rubber material or the like. Since the pressing member 82 is made of a relatively soft material, wear and deterioration of the tip portion 6B of the cutting tool 6 can be suppressed. The pressing member 82 is arranged behind the housing hole 81 . The pressing member 82 protrudes upward from the upper surface 80U of the body portion 80A.

As shown in FIG. 8, the tool sensor 83 is a sensor that detects the length of the cutting tool 6. Tool sensor 83 is formed from a conductive material. A current flows when the tool sensor 83 and the cutting tool 6 are in contact with each other. The tool sensor 83 detects the length of the cutting tool 6 based on the position of the spindle 51 when the tool sensor 83 and the cutting tool 6 contact each other. The tool sensor 83 is provided on the side of the pressing member 82 (right side here). The tool sensor 83 is arranged behind the housing hole 81 . The tool sensor 83 protrudes upward from the upper surface 80U of the main body 80A.

The cutting device 50 is configured to be able to grip each cutting tool 6 stored in the tool stocker 80 , and cuts the workpiece 1 held by the work holder 20 with the gripped cutting tool 6 . To enable this, the moving device 60 moves the cutting device 50 between the drive chamber 130 , the cutting device chamber 150 and the processing chamber 120 . Also, the holder moving device 30 moves the tool stocker 80 below the cutting device chamber 150 .

As shown in FIG. 7, the holder moving device 30 is configured to be able to move the tool stocker 80 to a tool gripping position P1 set below the moving path of the cutting device 50 by the Y-axis direction moving device 60Y. there is The tool gripping position P<b>1 is a position below the rear side opening 125 . By moving the tool stocker 80 to the tool gripping position P1 and moving the cutting device 50 to a position above the tool gripping position P1, the Z-axis direction moving device 60Z is driven to lower the cutting device 50. , the cutting device 50 can grip the cutting tool 6 of the tool stocker 80 . Temporary gripping and full gripping of the cutting tool 6 will be described later.

As shown in FIG. 7, the holder moving device 30 is configured to be able to move the tool stocker 80 to the tool exchange position P2 set forward of the tool gripping position P1. The tool exchange position P2 is set below the bottom wall 183 of the tool exchange chamber 180 . A bottom wall 183 of the tool exchange chamber 180 separates the tool exchange chamber 180 and the drive device chamber 130 . A bottom wall 183 of the tool exchange chamber 180 is formed with an opening 184 positioned above the tool exchange position P2 and open in the Z-axis direction. The opening 184 is an opening through which the user inserts and withdraws the cutting tool 6 from the tool stocker 80 . When the holder moving device 30 is driven to move the tool stocker 80 to the tool exchange position P2, the user can access the tool stocker 80 through the opening 184. FIG. By providing the tool exchange chamber 180 with the opening 184 formed therein, the user is prevented from touching the holder moving device 30 when exchanging the cutting tool 6 or the like. In addition, such a configuration prevents foreign matter from entering the driving device chamber 130 when the cutting tool 6 is replaced.

The control device 100 is connected to the holder moving device 30, the moving device 60, the cutting device 50, etc., and controls their operations. FIG. 11 is a block diagram of the cutting machine 10. As shown in FIG. As shown in FIG. 11, the control device 100 controls the X-axis direction drive motor 34 of the holder moving device 30, the A-axis rotation motor 41A and the B-axis rotation motor 41B of the rotation device 40, the rotation unit 52 of the cutting device 50 and the Gripping portion 53, Y-axis direction drive motor 63Y and Z-axis direction drive motor 63Z of moving device 60, L-axis direction drive motor 72B of workpiece changer 70, air blow device 55, dust collector 111, operation panel 110, are connected to and control their operation. Note that the control of the dust collector 111 may be performed not by the control device 100 but by a control device built into the dust collector 111 or an external device.

The configuration of the control device 100 is not particularly limited. The control device 100 is, for example, a microcomputer. The hardware configuration of the microcomputer is not particularly limited. processing unit), ROM (read only memory) that stores programs executed by the CPU, RAM (random access memory) that is used as a working area for developing programs, and memory that stores the above programs and various data a storage device;

As shown in FIG. 11, the control device 100 includes a cutting control section 101, a blow control section 103, a work exchange section 105, and a tool exchange section 107. The functions of each part of the control device 100 are implemented by a program. This program is read from a recording medium such as a CD or DVD. Note that this program may be downloaded through the Internet. Also, the function of each unit of the control device 100 may be implemented by a processor and/or a circuit or the like.

The cutting control unit 101 includes the X-axis direction drive motor 34 of the holder moving device 30, the A-axis rotation motor 41A and the B-axis rotation motor 41B of the rotation device 40, the rotation unit 52 of the cutting device 50, and the Y direction of the movement device 60. By controlling the axial drive motor 63Y and the Z-axis drive motor 63Z, the workpiece 1 is cut into a designated shape. During cutting of the workpiece 1, the dust collector 111 is driven.

The blow control unit 103 controls the air blow device 55 to jet air from the air blow nozzle 56 . Based on the position of the air blow nozzle 56 , the blow control unit 103 controls whether or not to inject air from the air blow nozzle 56 . Based on the position of the air blow nozzle 56 , the blow control unit 103 determines in which one of the cutting device chamber 150 , the processing chamber 120 and the driving device chamber 130 the air blow nozzle 56 is positioned. The position of the air blow nozzle 56 is determined by the drive amount of the Y-axis direction drive motor 63Y and the Z-axis direction drive motor 63Z of the moving device 60. FIG. The blow control unit 103 controls so that the air blow nozzle 56 does not blow air when the air blow nozzle 56 is positioned in the cutting device chamber 150 . When the air blow nozzle 56 is positioned in the drive device chamber 130, the blow control unit 103 controls the air blow nozzle 56 so as not to inject air in principle. Even when the air blow nozzle 56 is positioned in the drive device chamber 130, the blow control unit 103 controls the air blow nozzle 56 when the cutting tool 6 stored in the tool stocker 80 is gripped by the grip portion 53 of the spindle 51. It is configured to inject air toward the cutting tool 6 . That is, the blow control unit 103 ejects air from the air blow nozzle 56 immediately before the cutting tool 6 is gripped by the gripping unit 53 to remove cutting powder adhering to the cutting tool 6 . Further, even when the air blow nozzle 56 is positioned in the drive device chamber 130, the blow control unit 103 is controlled when the cutting tool 6 gripped by the gripping portion 53 of the spindle 51 is stored in the tool stocker 80 (when it is returned). ) is configured to blow air from an air blow nozzle 56 toward the cutting tool 6 . That is, the blow control unit 103 blows air from the air blow nozzle 56 immediately before the cutting tool 6 gripped by the gripping unit 53 is stored in the tool stocker 80 to remove cutting powder between the cutting tool 6 and the tool stocker 80 . prevent intrusion. The blow control unit 103 controls so that air is jetted from the air blow nozzle 56 when the air blow nozzle 56 is positioned in the processing chamber 120 . The blow control unit 103 appropriately controls the air blow device 55 to jet air from the air blow nozzle 56 during cutting of the object 1 to be cut so that the air adheres to the object 1 to be cut, the adapter 5 and the work holder 20 . Remove the shavings. As shown in FIG. 12, the blow control unit 103 is configured so that air is not jetted from the air blow nozzle 56 when the air blow nozzle 56 is positioned above the ceiling wall 120U of the processing chamber 120 . The blow control unit 103 is configured to be able to jet air from the air blow nozzle 56 only when the air blow nozzle 56 is positioned below the ceiling wall 120U of the processing chamber 120 .

Next, the procedure for controlling air injection from the air blow nozzle 56 will be described. FIG. 13 is a flow chart showing a control procedure for air injection from the air blow nozzle 56. As shown in FIG.

First, in step S110, the blow control unit 103 determines whether or not the air blow nozzle 56 is positioned above the ceiling wall 120U of the processing chamber 120 or not. When the air blow nozzle 56 is located above the ceiling wall 120U, the process proceeds to step S120. On the other hand, if the air blow nozzle 56 is not positioned above the ceiling wall 120U, the process proceeds to step S130.

In step S120, the blow control unit 103 controls the air blow nozzle 56 so that air is not jetted because the air blow nozzle 56 is positioned above the ceiling wall 120U.

At step S130, the blow control unit 103 determines whether the cutting tool 6 is cutting the object 1 to be cut. If the workpiece 1 is being cut, the process proceeds to step S140. On the other hand, if the object 1 to be cut is not being cut, the process proceeds to step S150.

In step S140, the blow control unit 103 controls the air blow nozzle 56 to inject air because the workpiece 1 is being cut (that is, the air blow nozzle 56 is positioned in the machining chamber 120).

At step S150, the blow control unit 103 determines whether the cutting tool 6 is being replaced. If the cutting tool 6 is being replaced, the process proceeds to step S160. On the other hand, if the cutting tool 6 is not being replaced, the process proceeds to step S170.

In step S160, since the cutting tool 6 is being replaced (that is, the air blow nozzle 56 is located in the drive device chamber 130), the blow control unit 103 controls the cutting tool 6 to Control is performed so that air is jetted from the air blow nozzle 56 (immediately before the top portion 6T of the tool 6 is gripped).

In step S170, the blow control unit 103 controls the air blow nozzle 56 so as not to inject air.

The work exchange unit 105 controls the L-axis direction driving motor 72B of the work changer 70 and the X-axis direction driving motor 34 of the holder moving device 30 to control the workpiece 1 (here, the workpiece 1 is held). Replace the adapter 5). As a result, a plurality of objects 1 to be cut are sequentially machined.

The tool exchange section 107 controls the X-axis direction drive motor 34 of the holder moving device 30, the Y-axis direction driving motor 63Y and the Z-axis direction driving motor 63Z of the moving device 60, and the gripping portion 53 of the cutting device 50. Then, the cutting tool 6 held by the holding portion 53 is replaced. As shown in FIG. 11 , the tool exchange section 107 includes a temporary gripping section 108 and a main gripping section 109 . As shown in FIG. 14, the temporary gripper 108 lowers the cutting device 50 with the gripper 53 open, and inserts the top 6T of the cutting tool 6 into the gripper 53 by the first length L1. After that, the gripping portion 53 is closed to temporarily grip the cutting tool 6 . After moving the cutting device 50 so that the tip 6B of the temporarily gripped cutting tool 6 is positioned above the pressing member 82 of the tool stocker 80, the main gripping unit 109 moves the cutting device 50 with the gripping unit 53 open. The cutting device 50 is lowered, and with the tip 6B of the cutting tool 6 pressed against the pressing member 82 (see FIG. 15), the top 6T of the cutting tool 6 is moved to the first length L1 (see FIG. 15). 14) After inserting the cutting tool 6 by a longer second length (see FIG. 16), the gripping portion 53 is closed and the cutting tool 6 is fully gripped. It should be noted that when the cutting tool 6 is temporarily gripped and when the cutting tool 6 is actually gripped are mechanically the same. The only difference is the length of the inserted portion).

Next, the procedure for exchanging the cutting tool 6 will be explained. FIG. 17 is a flow chart showing the procedure for exchanging the cutting tool 6. As shown in FIG.

First, in step S<b>210 , the tool exchange section 107 receives an instruction to exchange the cutting tool 6 . Here, it is assumed that the cutting tool 6 is not gripped (attached) to the grip portion 53 . When the cutting tool 6 is held by the holding portion 53, the tool exchanging portion 107 first stores the held cutting tool 6 in the predetermined storage hole 81 of the tool stocker 80, and stores the cutting tool 6 in the holding portion. The cutting tool 6 is not gripped by 53 .

In step S220, the temporary gripper 108 moves the cutting device 50 above the cutting tool 6 to be replaced.

In step S230, the temporary gripping unit 108 opens the gripping unit 53. As a result, the cutting tool 6 can be inserted into the grip portion 53 . Note that the operation of opening the grip portion 53 may be performed before step S220.

In step S240, the temporary gripping section 108 lowers the cutting device 50 with the gripping section 53 opened, and inserts the top portion 6T of the cutting tool 6 into the gripping section 53 by the first length L1 (see FIG. 14). Let That is, the grip part 53 grips the cutting tool 6 shallower than usual.

In step S250, the temporary gripping unit 108 temporarily grips the cutting tool 6 by closing the gripping unit 53. After that, the temporary gripper 108 raises the cutting device 50 .

In step S260, the main gripping section 109 moves the cutting device 50 so that the tip 6B of the temporarily gripped cutting tool 6 is positioned above the pressing member 82 of the tool stocker 80.

In step S270, the main gripping section 109 opens the gripping section 53. As a result, the gripping of the cutting tool 6 by the gripping portion 53 is released. Even if the gripping of the cutting tool 6 by the gripping portion 53 is released, a moderate frictional force acts between the gripping portion 53 and the top portion 6T of the cutting tool 6, so that the cutting tool 6 falls from the gripping portion 53. never do.

In step S280, the gripping unit 109 lowers the cutting device 50 while the gripping unit 53 is open, and the tip 6B of the cutting tool 6 is pressed against the pressing member 82 (see FIG. 15). The top portion 6T of the cutting tool 6 is inserted into the grip portion 53 by a second length L2 (see FIG. 16) longer than the first length L1. By lowering the cutting device 50 while pressing the cutting tool 6 against the pressing member 82 with the holding portion 53 open, the cutting tool 6 can be inserted into the holding portion 53 more accurately. .

In step S290, the main gripping section 109 closes the gripping section 53 to fully grip the cutting tool 6. After that, the main gripping part 109 raises the cutting device 50 . This completes the replacement of the cutting tool 6 .

As described above, according to the cutting machine 10 of the present embodiment, the temporary gripping portion 108 of the control device 100 inserts the top portion 6T of the cutting tool 6 into the gripping portion 53 of the spindle 51 by the first length L1. Afterwards, the gripping portion 53 is closed to temporarily grip the cutting tool 6 . That is, the gripping portion 53 grips the top portion 6T of the cutting tool 6 shallower than usual. Then, the main gripping unit 109 of the control device 100 presses the cutting tool 6 provisionally gripped by the gripping unit 53 against the pressing member 82 of the tool stocker 80 in a state where the gripping unit 53 is open, and moves the top portion of the cutting tool 6. 6T is inserted into the grip portion 53 by the second length L2. As a result, even if the cutting tool 6 is gripped with an inclination with respect to the gripping portion 53 at the time of temporary gripping, the inclination is eliminated. That is, the run-out accuracy of the cutting tool 6 is improved, and an improvement in cutting quality can be achieved.

In the cutting machine 10 of this embodiment, the pressing member 82 is made of a resin material. According to such a configuration, when the cutting tool 6 is pressed against the pressing member 82, wear and deterioration of the tip portion 6B of the cutting tool 6 can be suppressed.

In the cutting machine 10 of this embodiment, the plurality of storage holes 81 are arranged in a zigzag pattern. More specifically, in the tool stocker 80, a plurality of rows (here, five rows 81A to 81E) are formed in which some of the plurality of storage holes 81 are arranged in a predetermined alignment direction (here, left-right direction). ), and two adjacent columns among the plurality of columns 81A to 81E are displaced in the alignment direction. According to such a configuration, it is possible to improve the storage efficiency of the cutting tool 6 in the space of the main body portion 80A of the tool stocker 80, and to suppress the enlargement of the main body portion 80A.

In the cutting machine 10 of this embodiment, the tool stocker 80 has a tool sensor 83 that detects the length of the cutting tool 6 , and the tool sensor 83 is provided on the side of the pressing member 82 . According to this configuration, since the distance between the pressing member 82 and the tool sensor 83 is relatively short, the spindle 51 is moved to detect the length of the cutting tool 6 that is actually gripped while being pressed against the pressing member 82. It is possible to reduce the time to

The cutting machine 10 of this embodiment includes a drive device chamber 130 that houses the tool stocker 80, and a processing chamber 120 that is separated from the drive device chamber 130 and in which the workpiece 1 is cut. According to such a configuration, it is possible to suppress adhesion of cutting powder generated when the workpiece 1 is cut in the machining chamber 120 to the tool stocker 80 . That is, it is possible to reduce the adverse effects of cutting dust when the cutting tool 6 is temporarily gripped or fully gripped by the gripping portion 53 .

The preferred embodiment of the present invention has been described above. However, the above-described embodiments are merely examples, and the present invention can be embodied in various other forms.

1 Work piece 6 Cutting tool 6B Tip 6T Top 10 Cutting machine 20 Work holder (holding device)
50 Cutting device 51 Spindle 52 Rotating unit 53 Gripping unit 60 Moving device 80 Tool stocker 80A Main unit 81 Storage hole 82 Pressing member 83 Tool sensor 100 Control device 107 Tool exchange unit 108 Temporary gripping unit 109 Main gripping unit 120 Machining chamber 130 Drive Equipment room 150 Cutting equipment room

Claims (6)

a tool stocker capable of storing a plurality of bar-shaped cutting tools;
A cutting device configured to be openable and closable and comprising a spindle having a gripping portion for gripping the top portion of the cutting tool stored in the tool stocker and a rotating unit for rotating the gripping portion, and cutting an object to be cut with the cutting tool. and,
a moving device for moving the cutting device;
a control device that controls the cutting device and the moving device,
The tool stocker is
a body portion formed with a plurality of storage holes capable of storing the cutting tool;
a pressing member provided on the upper surface of the main body and against which the tip of the cutting tool is pressed;
The control device is
The cutting device is lowered while the gripping portion is open, and after inserting the top portion of the cutting tool into the gripping portion by a first length, the gripping portion is closed to temporarily grip the cutting tool. a temporary gripping portion for
After moving the cutting device so that the tip of the temporarily gripped cutting tool is positioned above the pressing member, the cutting device is lowered while the gripping portion is open, and the cutting is performed. With the tip of the tool pressed against the pressing member, the tip of the cutting tool is inserted into the gripping portion by a second length longer than the first length, and then the gripping portion is moved. and a final gripper that closes and fully grips the cutting tool. The cutting machine according to claim 1, wherein the pressing member is made of a resin material. The cutting machine according to claim 1 or 2, wherein the plurality of storage holes are arranged in a zigzag pattern. The tool stocker is formed with a plurality of rows in which some of the plurality of storage holes are aligned in a predetermined alignment direction,
4. The cutting machine according to claim 3, wherein two adjacent rows among the plurality of rows are misaligned in the row direction. The tool stocker includes a tool sensor that detects the length of the cutting tool,
The cutting machine according to any one of claims 1 to 4, wherein the tool sensor is provided on the side of the pressing member. a first chamber accommodating the tool stocker;
The cutting machine according to any one of claims 1 to 5, further comprising a second chamber that is separated from the first chamber and in which the workpiece is cut.

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