JP2011093039A - Circular saw cutter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a circular saw cutter capable of moving back and forth a clamping and fixing position of an object to be cut so that a cutting edge of a rotary blade can cut from an appropriate position depending on a shape and a size of the object. <P>SOLUTION: A common base 5 is fixed to an upper part of a base 2. A pair of guide slots 30 and 30 parallel to each other are provided on both sides of an upper surface of the common base 5 in the fore-and-aft direction of the base 2. Protrusions 31 slidably fitting along the pair of guide slots are provided on both sides of a lower surface of a fixed vise 27. A vise device 3 is disposed on the upper surface of the common base 5, in addition the protrusions 31 of the fixed vise 27 are fitted into the pair of guide slots 30 and 30, and the fixed vise 27 can move back and forth on the base 2 parallel to a movable vise 28. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a circular saw cutting machine that cuts a long workpiece such as an angle steel material, an H-shaped steel material, a round pipe, a square pipe or the like into a predetermined size by a rotary blade attached to a movable arm.

  Conventionally, after a work piece is placed on a base and fastened and fixed by rotating the handle of a fixing device composed of a fixed base and a movable base, the cutting blade is shifted to a cutting operation, and a rotary blade interlocked with the motor is installed. A cutting machine that rotates and manually moves the feed handle to move downward and the movable arm rotates downward with the bearing portion as a fulcrum, and cuts the workpiece with the rotary blade of the movable arm is known. (See Patent Document 1).

  In the cutting machine described in Patent Document 1, the rotary blade is movable when the bearing portion of the fixed arm is positioned above the object to be cut and the movable arm and the second bracket rotate at the same radius with the bearing portion as a fulcrum. Since the rotary blade pivotally supported at one end of the arm moves so as to swing from the outside (movable base side) of the object to be cut with the bearing portion as a fulcrum, it cuts a to-be-cut object having a low cutting resistance and width. .

Utility Model Registration No. 2603435

  However, in the conventional cutting machine, since the fixed position on the base of the workpiece to be fastened and fixed by the fixing device is determined to be a fixed position, the cutting edge of the rotary blade is appropriate depending on the shape and size of the workpiece. There was a problem that it was not possible to cut from any position.

  For this reason, conventionally, a sub vice plate is attached to the fixed base, the sub vice plate is moved back and forth, or sub vice plates of different thicknesses are prepared, and the vice plate is changed according to the work each time. It corresponded by exchanging. However, these methods are not preferable methods because they are troublesome in work and the cutting accuracy is distorted.

  The present invention has been made in view of the above-described problems, and its object is to cut the cutting edge of the rotary blade from an appropriate position in accordance with the shape and size of the cutting object. An object of the present invention is to provide a circular saw cutting machine that can adjust the pinching and fixing position in the front-rear direction.

  The circular saw cutting machine according to claim 1 is a frame supported on a base so as to be swingable in the vertical direction, a motor attached to the frame, and attached to the frame, and driven to rotate by the motor. And a vise device that moves a movable vise closer to a fixed vise and clamps and fixes an object to be cut by the fixed vice and the movable vise on the base. In order to solve the above problem, a common base is fixed to the upper part of the base, and a pair of guide grooves parallel to each other are provided on both sides of the upper surface of the common base in the front-rear direction of the base. Protrusions that are slidably fitted along the pair of guide grooves are provided on both sides of the lower surface of the fixed vise, and the vice device is disposed on the upper surface of the common base. The pair of guide grooves to the fixed vise of the protrusion is fitted, the fixing device is movable in the longitudinal direction of the base in parallel with the movable vice, it is characterized.

  A circular saw cutting machine according to a second aspect is the circular saw cutting machine according to the first aspect, wherein a side plate of the common base is provided with an alignment scale plate capable of displaying a moving position of the fixed vice. It is characterized by.

  A circular saw cutting machine according to a third aspect is the circular saw cutting machine according to the first or second aspect, wherein a table is fitted to the upper surface of the common base so as to be horizontally rotatable, and the frame is swung vertically in the table. The to-be-cut object formed by a fixed vise surface facing the movable vise of the fixed vise and a rotary surface of the rotary blade when the table is horizontally rotated with respect to the common base. With respect to the cutting angle of an object, a positioning stopper is provided at a rotational position on the common base corresponding to a predetermined cutting angle.

  According to the first aspect of the present invention, the movable vise is moved closer to the fixed vise on the base, and the movable vise is further fixed in a state where the workpiece is sandwiched and fixed by the fixed vice and the movable vise. When moving toward the vise, the fixed vise moves to the rear of the base in a state parallel to the movable vise, so the cutting edge of the rotary blade cuts from the proper position according to the shape and size of the workpiece. Thus, the clamping position of the object to be cut can be moved and adjusted in the front-rear direction. Moreover, the durability of the blade can be improved by cutting the blade edge of the rotary blade from an appropriate position.

  According to the invention which concerns on Claim 2, according to the shape and magnitude | size of a to-be-cut object, it can make it easy to match | combine the clamping fixed position of a to-be-cut object to an appropriate position.

  According to the third aspect of the present invention, the cutting angle of the workpiece can be easily set to a predetermined cutting angle by rotating the table until it hits the stopper.

It is a perspective view which sees the circular saw cutting machine concerning the embodiment of the present invention from the front diagonal right direction. It is a perspective view which shows the circular saw cutting machine of FIG. 1 seen from the front diagonal left direction. It is a front view of the circular saw cutting machine of FIG. It is a right view of the circular saw cutting machine of FIG. It is a top view which shows the principal part of a common base, a rotary table, and a vise apparatus. It is an enlarged front view which expands and shows the principal part of FIG. It is an enlarged side view which expands and shows the principal part of FIG. It is sectional drawing which shows the fixing | fixed part for fixing a fixing vise to a common base. It is sectional drawing which shows a spindle lock apparatus (at the time of free). It is sectional drawing which shows a spindle lock apparatus (at the time of a lock | rock). It is a figure which shows the volt | bolt which fastens the rotary blade.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing a circular saw cutting machine according to an embodiment of the present invention when viewed from the front oblique right direction, and FIG. 2 is a perspective view showing the circular saw cutting machine of FIG. is there. 3 is a front view of the circular saw cutter of FIG. 1, and FIG. 4 is a right side view of the circular saw cutter of FIG.

  The circular saw cutting machine 1 is generally arranged above a base device 2 and a vise device 3 for holding an object to be cut on a base 2 formed in a substantially box shape. And a cutting device 4 that swings toward and cuts the object to be cut held by the vise device 3.

  1-4, the common base 5 is fixed to the upper part of the base 2 so that the upper surface of the base 2 may be covered, and the turntable 6 is fitted in the center part of the upper surface of the common base 5 so that horizontal rotation is possible. The rotary table 6 is integrally formed with a support table portion 7 extending so as to cover the rear right portion of the upper surface of the common base 5 (see FIGS. 2 and 4). A shaft support 8 protrudes upward on the support table 7, and a pin rod 9 is inserted horizontally through the shaft support 8 in the left-right direction.

  The cutting device 4 includes a frame 10 that forms a device main body and is disposed along the front-rear direction of the base 2, and the frame 10 includes an arm portion 11 that extends downward. A pin rod 9 is inserted into the lower end portion of the arm portion 11, and the cutting device 4 is pivotally supported via the pin rod 9 so as to be rotatable in the vertical direction. A motor 12 is attached to the left rear portion of the frame 10 so as to be disposed near the rear center above the base 2, and is disposed at the approximate center above the base 2 on the left front portion of the frame 10. As shown, a rotary blade 13 that is rotationally driven by the motor 12 is attached, and on the right side of the frame 10, the belt 12 (not shown) that interlocks the motor 12 and the rotary blade 13 is prevented from being caught. A belt cover 14 is provided.

  Further, an on button 15 and an off button 16 for operating the motor are provided on the front surface of the frame 10, and on the left side of the on button 15 is a hook-like handle 17 for manual operation that extends obliquely forward. The lower end is fixed. Reference numeral 18 denotes a spindle lock device for locking the saw blade spindle by a pushing operation when the rotary blade 13 is attached or detached. A balance spring 19 for urging the cutting device 4 to the original position (upward position) is provided at the rear part of the frame 10, and it is detected that the cutting device 4 has been returned to the original position (upward position). A limit switch 20 for stopping the rotation is provided. Further, when the cutting device 4 is rotated, a descending end stopper 22 that abuts against the projecting portion 21 on the lower end side portion of the arm portion 11 and regulates the descending position is erected on the upper surface of the support table portion 7 of the rotary table 6. Has been.

  In addition, a saw cover 23 is provided on the left side surface of the frame 10 to cover the outer periphery of the rear portion of the rotary blade 13, and a safety cover 24 that covers an upper peripheral portion of the rotary blade 13 is rotatably mounted coaxially with the rotary blade 13. The front end portion of the safety cover arm 25 that extends obliquely upward from the rear portion of the frame 10 is engaged with the safety cover 24 (see FIG. 2). At the lower part of the left side surface of the frame 10, there is provided a steadying device 26 that prevents the rolling of the rotary blade 13 by contacting the rotary surface of the rotary blade 13 (see FIG. 2).

[Vise device 3]
The vise device 3 includes a fixed vise 27 and a movable vise 28 disposed on the rotary table 6, and rotates a feed handle 29 attached to one end of a screw rod (not shown) screwed to the movable vise 28. By moving the movable vise 28 back and forth, the object to be cut (not shown) is clamped and fixed at the approximate center of the rotary table 6 by the fixed vise 27 and the movable vise 28 (see FIGS. 1 and 2). The fixed vise 27 is disposed so as to cross in the left-right direction above the rotary table 6.

  5 is a plan view showing the main parts of the common base 5, the rotary table 6 and the vise device 3. FIG. 6 is an enlarged front view showing the main parts of FIG. 3 in an enlarged manner. FIG. It is an enlarged side view which expands and shows a part.

  On both sides of the upper surface of the common base 5, a pair of guide grooves 30, 30 parallel to each other are provided from the front edge to the middle in the front-rear direction of the base 2 (FIGS. 1, 2 and FIG. 5). On the other hand, feet 27a are formed on the left and right sides of the fixed vise 27, and protrusions 31 that are slidably fitted along the pair of guide grooves 30, 30 are provided on the lower surface of the feet 27a. The protrusions 31 of the fixed vise 27 are fitted in the guide grooves 30 and 30 so that the fixed vice 27 can move in the front-rear direction of the base 2 in a state parallel to the movable vise 28 (see FIG. 6).

  As shown in FIG. 6, the guide groove 30 communicates with an opening groove portion 32 opened upward, and below the opening groove portion 32 in the depth direction of the groove, and has a wider groove width than the groove width of the opening groove portion 32. It consists of a groove 33. As shown in FIG. 5, a circular hole 34 having a diameter larger than the groove width dimension of the wide groove portion 33 of the guide groove 30 is provided at the end of the guide groove 30. The circular hole 34 is a hole for dropping the chips accumulated in the guide groove 30 into the lower base 2. Further, on the foot portions 27 a on both sides of the fixed vise 27, fastening bolts 35 for fixing the fixed vise 27 to the common base 5 are provided in the vertical direction. The fastening bolt 35 is a hexagon socket head bolt.

  FIG. 8 is a cross-sectional view showing a fixed portion for fixing the fixed vise 27 to the common base 5. As shown in FIG. 8, a circular recess 50 is provided on the upper surface of the foot portion 27 a of the fixed vise 27, and a vertically extending through hole 51 penetrating the lower surface of the protrusion 31 is provided on the bottom surface of the circular recess 50. It has been. The shaft portion 53 of the tightening bolt 35 is inserted into the through hole 51, the head portion 52 of the tightening bolt 35 is disposed in the circular recess 50, and the male screw portion 54 at the distal end portion of the tightening bolt 35 has a guide groove. 30 wide groove portions 33 are inserted. On the other hand, a connecting plate 55 having a width that is larger than the groove width of the opening groove portion 32 and smaller than the groove width of the wide groove portion 33 is inserted into the wide groove portion 33 of the guide groove 30 and formed in the connecting plate 55. The male screw portion 54 of the fastening bolt 35 is screwed to the female screw portion 56. Therefore, when the fastening bolt 35 is fastened to the connecting plate 55, the fixing vise 27 is fixed in close contact with the common base 5.

  Further, as shown in FIG. 7, on the right side surface of the common base 5, an alignment scale plate 36 that can display the movement position of the fixed vice 27 is provided. On the mating scale plate 36, a normal cutting position, an angular cutting position, and a maximum capacity cutting position are written in order from the front to the rear.

  Furthermore, when the turntable 6 is rotated horizontally with respect to the common base 5, the cutting angle of the workpiece formed by the fixed vice surface facing the movable vice 28 of the fixed vice 27 and the rotating surface of the rotary blade 13 is formed. A positioning stopper is provided at a rotational position on the common base corresponding to a predetermined cutting angle.

  A 90-degree cutting stopper 37 is attached to the rear of the right side surface of the common base 5, and the upper portion of the 90-degree cutting stopper 37 interferes with the clockwise rotation locus of the support table portion 7 of the rotary table 6. (See FIGS. 1, 3 and 4). A 45-degree cutting stopper 38 is attached to the rear left side of the upper surface of the common base 5, and the 45-degree cutting stopper 38 also interferes with the counterclockwise rotation locus of the support table portion 7 of the rotary table 6. It is arranged at a position (see FIG. 2). Further, a fixing bracket 39 for fixing the turntable 6 to the common base 5 is provided on the front surface of the common base 5 (see FIG. 1).

  A sub-plate 40 for stably holding an object to be cut is attached to the front surface of the fixed vise 27. A side plate 41 is attached to the right side of the movable vise 28. Further, a vice chip cover 42 is attached to the upper surface of the rear portion of the fixed vice 27 so that chips generated when cutting the workpiece are not scattered around, and a chip scattering prevention cover 43 is mounted on the rear surface of the peripheral surface of the rotary table 6. Is attached (see FIG. 2).

  Next, the operation of this embodiment will be described. An object to be cut (not shown) is placed on the rotary table 6 and the feed handle 29 of the vise apparatus 3 is rotated to move the movable vise 28 closer to the fixed vise 27 and move with the fixed vise 27. The object to be cut is clamped and fixed with the vice 28. In adjusting the cutting position, when the movable vise 28 is further moved toward the fixed vise 27, the fixed vise 27 can be slid along the guide grooves 30 and 30, so that the fixed vise 27 is parallel to the movable vise 28. Move backwards in a normal state.

  Therefore, according to the shape and size of the workpiece, the clamping and fixing position of the workpiece can be moved and adjusted in the front-rear direction so that the cutting edge of the rotary blade 13 can be cut from an appropriate position. In addition, by visually confirming the moving position of the fixed vise 27 with the alignment scale plate 36, it is possible to easily adjust the clamping and fixing position of the workpiece to an appropriate position according to the shape and size of the workpiece. . Then, the fixing vise 27 is fixed to the common base 5 by tightening the tightening bolt 35.

  When the on button 15 is pressed, the rotary blade 13 interlocked with the motor 12 rotates via a belt (not shown). When the handle 17 is moved downward, the cutting device 4 having the rotary blade 13 rotates downward about the pin rod 9 and the object to be cut is cut by the rotary blade 13. Note that the durability of the blade can be improved by cutting the blade edge of the rotary blade 13 from an appropriate position.

  When performing angle cutting, after loosening the bolts of the fixture 39, the rotary table 6 is turned counterclockwise by human power, so that the fixed vise surface of the fixed vice 27 and the rotary surface of the rotary blade 13 are rotated. By attaching an angle, the workpiece can be cut without making it oblique. The required angle setting is performed by combining an angle scale plate (not shown) attached to the circumferential side surface of the rotary table 6 with an indicating projection (not shown) indicating the angle.

  Since the 45-degree cutting stopper 38 and the 90-degree cutting stopper 37 are provided for an angle that is normally frequently used (for example, 45 degrees and 90 degrees), positioning can be easily performed. By rotating the rotary table 6 until it hits the stopper, the cutting angle of the object to be cut can be easily set to a predetermined cutting angle. An adjustment screw 44 for adjustment is provided on the stopper so that fine angle adjustment can be performed, and fine adjustment can be easily performed by moving the adjustment screw 44 forward or backward.

[Spindle lock device 18]
FIG. 9 is a cross-sectional view showing the spindle lock device 18 when free, and FIG. 10 is a cross-sectional view showing the spindle lock device 18 when locked. As shown in FIG. 9, a screw hole 46 is formed in the front surface of the frame 10 toward the axis of the spindle shaft 45, and the periphery of the screw hole 46 on the front surface of the frame 10 and the middle of the screw hole 46 in the depth direction. By the time, the lock pin storage case cap 47 is attached. The lock pin storage case cap 47 is provided with an insertion hole 48 in the axial direction, and a lock pin 49 having a dimension longer than the distance from the front surface of the frame 10 to the axis of the spindle shaft 45 is inserted into the insertion hole 48. Yes. A flat washer 57 is fitted on the outer periphery of the upper end of the lock pin 49 and a cap nut 58 is screwed to the upper end of the lock pin 49.

  A compression coil spring 59 is externally attached to the outer periphery of the intermediate portion of the lock pin 49, and the lower end of the compression coil spring 59 is brought into contact with the engaging portion 60 adjacent to the insertion hole 48 of the lock pin storage case cap 47. The upper end is in contact with the flat washer 57. Further, a retaining O-ring 61 is fitted on the outer periphery of the lower portion of the lock pin 49 exposed from the insertion hole 48 toward the spindle shaft 45. Therefore, the lock pin 49 is in a state where the upper part from the middle part always protrudes forward from the front surface of the frame 10 opposite to the spindle shaft 45 by the biasing force of the compression coil spring 59, and the O-ring 61 is locked. It is in contact with the lower end surface of the storage case cap 47.

  As shown in FIG. 10, when the lock pin 49 of the spindle lock device 18 is pushed in, the lock pin 49 compresses the compression coil spring 59 and moves toward the spindle shaft 45, and the lower end portion of the spindle shaft 45 is the spindle shaft 45. The spindle shaft 45 is fixed (locked so as not to rotate).

  Conventionally, in this type of stationary circular saw cutter, when the rotary blade is detached, the spanner for fixing the spindle shaft and the saw blade clamping bolt 63 (see FIG. 11) for tightening the rotary blade are loosened. Needed two of the wrench for the purpose. The spindle lock device 18 requires only one wrench for detaching the saw blade clamping bolt 63 that is tightening the rotary blade, and the detachment of the rotary blade is facilitated and the safety is improved.

DESCRIPTION OF SYMBOLS 1 Circular saw cutting machine 2 Base 3 Vise apparatus 4 Cutting apparatus 5 Common base 6 Rotary table 7 Support table part 8 Shaft support part 9 Pin rod 10 Frame 11 Arm part 12 Motor 13 Rotary blade 14 Belt cover 15 On button 16 Off button 17 Handle DESCRIPTION OF SYMBOLS 18 Spindle lock device 19 Balance spring 20 Limit switch 21 Protruding part 22 Lower end stopper 23 Saw cover 24 Safety cover 25 Safety cover arm 26 Stabilizer 27 Fixed vise 27a Foot 28 Movable vice 29 Feed handle 30 Guide groove 31 Protrusion 32 Opening groove 33 Wide groove portion 34 Circular hole 35 Tightening bolt 36 Matching scale plate 37 Stopper for 90-degree cutting 38 Stopper for 45-degree cutting 39 Fixing bracket 40 Subplate 41 Side plate 42 Bar Chair chip cover 43 Chip scattering prevention cover 44 Adjustment screw 45 Spindle shaft 46 Screw hole 47 Lock pin storage case cap 48 Insertion hole 49 Lock pin 50 Circular recess 51 Through hole 52 Head 53 Shaft part 54 Male thread part 55 Connecting plate 56 Female thread portion 57 Flat washer 58 Cap nut 59 Compression coil spring 60 Locking portion 61 O-ring 62 Hole 63 Saw blade tightening bolt

Claims (3)

A frame that is pivotally supported on the base so as to be swingable in the vertical direction;
A motor attached to the frame;
A rotary blade attached to the frame and driven to rotate by the motor;
On the base, a vise device that moves a movable vise closer to a fixed vise, and clamps and fixes an object to be cut by the fixed vice and the movable vise,
In a circular saw cutting machine with

A common base is fixed to the upper part of the base,
On both sides of the upper surface of the common base, a pair of guide grooves parallel to each other are provided in the front-rear direction of the base,
Protrusions that are slidably fitted along the pair of guide grooves are provided on both sides of the lower surface of the fixed vise,
The vice device is disposed on the upper surface of the common base, and the protrusions of the fixed vice are fitted into the pair of guide grooves,
The fixed vise is movable in the front-rear direction of the base in a state parallel to the movable vise,
Circular saw cutting machine characterized by that. On the side surface of the common base, there is provided an alignment scale plate that can display the movement position of the fixed vice.
The circular saw cutter according to claim 1, wherein: A table is fitted on the upper surface of the common base so as to be horizontally rotatable,
The table is pivotally supported so that the frame can swing in the vertical direction,
When the table is horizontally rotated with respect to the common base, the cutting angle of the workpiece formed by the fixed vice surface of the fixed vice facing the movable vice and the rotating surface of the rotary blade is previously set. A positioning stopper is provided at the rotational position on the common base corresponding to the determined cutting angle.
The circular saw cutting machine according to claim 1 or 2, characterized in that.

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