KR20190019406A - Apparatus for cutting inside of an object - Google Patents

Abstract

A processing apparatus according to the present invention includes a workpiece (10) on which a workpiece (100) is installed; A jig unit (20) installed on the work bed (10) and capable of selectively fixing the object to be processed (100); A gripper unit (60) for inserting the tool (50) into the object (100) and detachable from the tool (50); A main spindle unit (30) disposed on one side of the workpiece (10), rotated by a provided driving force, and coupled with the tool (50) and inside the object to be processed (100); And an auxiliary spindle unit (40) disposed on the other side of the work bed (10) and disposed to face the main spindle unit (30) and coupled with the tool (50) and inside the object to be processed do.
The present invention is advantageous in that an object to be processed can be cut by an operation of rotating the tool in place after inserting the tool into the object.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

The present invention relates to an internal machining apparatus of the present invention, and more particularly to an apparatus for machining an inside of an object to be machined.

Shelves are the oldest among the machine tools, and they are typical ones. H. After Moisley completed a modern sliding tool rack in 1877, it became possible to machine the bite-using work from the human hand. In addition, while operating a lathe using mechanical power, it is possible to precisely process various machine parts as well as a thread cutting operation using a conversion gear or the like.

Main components are bed, main spindle, tailstock, reciprocating, tool stand and conveying device. It is designed to fix the workpiece between the main shaft and the tailstock, and to receive rotational motion from the main shaft. However, there is also some work to maintain workpieces in the spindle without a tailstock, such as vertical lathes or turret lathes.

The cutting tool is held on the tool rest which is attached to the carriage, and the tool rest is moved forward, backward and rightward to give a proper cutting length, and the workpiece is cut along with the generation of the chip. The tool stand moves along the feed rod and lead screw on the front of the bed. A gear device using rotational motion of the main shaft is widely used for rotating the feed rod or the lead screw, and the feed rate changing device is also capable of changing its speed appropriately. When cutting the screw, the spindle rotation and the feed mechanism are used.

The bed has a strong structure because it contains the main part of the main body of the shelf such as the main shaft, the tail pad, and the tool stand. Since the upper part of the bed is a part where the reciprocating member slides to the left and right and guides it, precise finishing is achieved through precision finishing.

However, the conventional lathe has a problem that the inside of the object can not be processed although the outside of the object can be processed.

Korean Patent Publication No. 10-1214695

An object of the present invention is to provide a machining apparatus for cutting the interior of an object to be machined.

A processing apparatus according to one aspect of the present invention includes a workpiece (10) on which a workpiece (100) is installed; A jig unit (20) installed on the work bed (10) and capable of selectively fixing the object to be processed (100); A gripper unit (60) for inserting the tool (50) into the object (100) and detachable from the tool (50); A main spindle unit (30) disposed on one side of the workpiece (10), rotated by a provided driving force, and coupled with the tool (50) and inside the object to be processed (100); And an auxiliary spindle unit (40) disposed on the other side of the work bed (10) and disposed to face the main spindle unit (30) and coupled with the tool (50) and inside the object to be processed do.

The object to be processed includes: a first processing shaft opening (101) into which the main spindle unit is inserted; A second processing shaft opening (102) inserted into the auxiliary spindle unit; And a cooperating opening into which the gripper unit is inserted.

Wherein the main spindle unit and the auxiliary spindle unit are located on a machining axis line, and when the machining target is machined, the machining object and the tool are located on the machining axis line, Can be located on the building line.

Wherein the main spindle unit is fixed and the work bed is linearly movable through the workpiece transfer module in the direction of the processing axis and the auxiliary shaft spindle unit is configured to be linearly movable in the direction of the processing axis via the auxiliary transfer module .

The jig unit may be installed vertically or horizontally on the work bed, and may be linearly moved along the machining axis line.

The jig unit (20) includes a jig base (22) fixed to the work bed (10); A jig arm (24) installed on the jig base (22) and assembled to the jig base (22) and rotated with respect to the jig base (22) to fix the object; (26) for assembling the jig arm (24) and the jig base (22) and forming a rotation axis of the jig arm (24); A jig actuator (28) for rotating the jig arm (24) and supporting the jig arm (24); And an actuator rod 29 mounted on the jig actuator 28 and linearly moved and coupled to the jig arm 24 and the pin 23 to rotate the jig arm 24.

The present invention has the following advantages.

First, there is an advantage that an object can be cut by an operation of rotating the tool in place after inserting the tool into the object.

Second, there is an advantage that the tool can be assembled and separated in the object to be machined located on the machining axis line.

Third, since the tool is rotated in place by the rotational force provided through the spindle in the inside of the object to be machined, the cutting force of the tool is excellent and the cutting time can be drastically shortened.

1 is a plan view of an operation of a processing apparatus according to a first embodiment of the present invention.
2 is a front view of Fig.
3 is a left side view of Fig.
4 is a detailed view of the jig unit shown in Fig.
5 is a perspective view of an object to be processed according to the first embodiment of the present invention.
6 is a perspective view of the object to be processed according to the first embodiment of the present invention, viewed from the other side.
7 is a cross-sectional view of an object to be processed according to the first embodiment of the present invention.
8 is a pre-operation layout diagram of a machining apparatus according to the first embodiment of the present invention.
9 is an operation example 1 showing an insertion state of the gripper unit in the machining apparatus according to the first embodiment of the present invention.
Fig. 10 is an operational example 2 of the moving state of the work bed in the processing apparatus according to the first embodiment of the present invention.
11 is a schematic view of an operation example of a combined state of the auxiliary spindle and the tool in the machining apparatus according to the first embodiment of the present invention.
Fig. 12 is an operational example 4 showing the separation state of the gripper unit in the processing apparatus according to the first embodiment of the present invention.
13 is a plan view of the working device according to the second embodiment of the present invention.
14 is a front view of Fig.
Fig. 15 is a left side view of Fig. 13; Fig.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

The machining apparatus according to the first embodiment of the present invention will be described with reference to Figs. 1 to 12. Fig.

The machining apparatus according to the present embodiment includes a workpiece 10 on which a workpiece 100 is mounted and a jig unit 20 mounted on the workpiece 10 and capable of selectively fixing the workpiece 100 A gripper unit 60 for inserting the tool 50 into the object to be processed 100 and a gripper unit 60 disposed on one side of the workpiece 10 and rotated by a provided driving force, A main spindle unit 30 coupled to the main body 10 and the main body 10 and coupled to the main body 10 in the object 100; And an auxiliary spindle unit (40) coupled within the object (100).

The machining apparatus according to the present embodiment cuts the inside of the differential case. Unlike the present embodiment, the machining apparatus can cut the inside of other types of parts.

The main spindle unit 30, the jig unit 20 and the auxiliary spindle unit 40 are arranged in a straight line. The main spindle unit 30 is provided with a main shaft spindle 32 and the auxiliary spindle unit 40 is provided with a sub spindle 42.

The main spindle 32 and the auxiliary spindle 42 are arranged in a straight line and a straight line in which the main spindle 32 and the auxiliary spindle 42 are disposed is defined as a working axis.

The main spindle 32 is rotated in the circumferential direction on the working axis. The auxiliary spindle 42 is also rotated in the circumferential direction on the machining axis line. Further, the moving direction of the gripper unit 60 is defined as co-operation.

The work bed 10 may be arranged horizontally or vertically. In the present embodiment, the work bed 10 is arranged horizontally. The arrangement of the workbeds 10 can be variously formed according to the object to be processed.

In the present embodiment, the workpiece 10 can be moved relative to the main spindle unit 30 or the auxiliary spindle unit 40 on the machining axis. The main spindle unit 30 or the auxiliary spindle unit 40 may be configured to be moved along the machining axis, unlike the present embodiment.

In the present embodiment, the spindle spindle unit 30 is fixed, and the work bed 10 and the auxiliary spindle unit 40 can be moved relative to each other on the working axis line.

A work-bed transfer module (not shown) is installed to move the work-bed 10 in the direction of the processing axis. The work-bed transport module includes an actuator and a linear guide. The workpiece transfer module can reciprocate the work bed 10 in a straight line on the processing axis line. The workpiece transfer module supports the workpiece (10) when the object (100) is processed. Since the construction and operation of the work-bed transporting module are common to those skilled in the art, a detailed description will be omitted.

The jig unit 20 may be installed separately from the work bed 10.

In this embodiment, the jig unit 20 is fixed to the work bed 10. Therefore, when the work bed 10 is moved by the work-bed transporting module, the jig unit 20 is also moved together.

The jig unit 20 is installed vertically to the work bed 10 in this embodiment. Unlike the present embodiment, the jig unit 20 can be installed parallel to the work bed 10.

The jig unit 20 includes a jig base 22 fixed to the workpiece bed 10 and a jig base 22 provided on the jig base 22 and assembled to the jig base 22, (26) for assembling the jig arm (24) and the jig base (22) and forming a rotation axis of the jig arm (24) And a jig actuator 28 for rotating the jig arm 24 and supporting the jig arm 24. [

In this embodiment, the jig bracket 25 is provided on the jig base 22.

The jig bracket 25 is provided with the arm shaft 26 and the jig arm 24.

The jig arm 24 is rotated with respect to the jig bracket 25.

The jig actuator 28 uses a hydraulic cylinder in this embodiment.

The jig actuator 28 is operated in the direction parallel to the machining axis (horizontal direction in this embodiment) in the present embodiment.

The jig actuator 28 provides a driving force to one side (outer side) of the jig arm 24 and the other side (inner side) of the jig arm 24 is rotated to fix the object 100.

The arm shaft 26 is positioned in the middle of the jig arm 24.

A plurality of the jig arms 24 are disposed. In this embodiment, four jig arms 24 are disposed. The jig arm 24 closely contacts the outer edge of the object 100 with the jig base 22. The object to be processed 100 is held in a fixed state by the pressure provided by the jig actuator 28.

In this embodiment, the actuator rod 29 constituting the jig actuator 28 is connected to the jig arm 24 by a pin 23 (see Fig. 13). When the actuator rod 29 is moved upward (left to right), the jig arm 24 fixes the object 100. When the actuator rod 29 is lowered (moved from right to left) (100) is released.

The four actuator rods 29 are operated simultaneously. Unlike the present embodiment, the actuator rod 29 can be individually controlled.

The main spindle unit (30) is disposed on the right side of the jig base (22).

An insertion hole 21 is formed so that the spindle spindle unit 30 can be inserted into the object 100. And the insertion hole is located on the machining axis line.

In this embodiment, the object to be processed 100 is a differential case used in a vehicle. A differential gear of the vehicle is installed in the differential case.

The differential gear is a differential device, which alleviates the rotational difference when a rotational difference between the left wheel and the right wheel is generated.

The object to be processed 100 has at least two openings.

One of the openings is located on the machining axis line and the other is located on the co-planing line.

In this embodiment, the object to be processed 100 is formed with the processing shaft opening 101 (102) and the air-cooperating opening 103 (104). In the present embodiment, since the auxiliary spindle unit 40 is provided, two processing shaft openings 101 are formed. The object to be processed 100 is formed with the first processing shaft opening portion 101 into which the main spindle unit 30 is inserted and the second processing shaft opening portion 102 into which the auxiliary spindle unit 40 is inserted.

The object to be processed 100 includes a processing body 110, a first processing shaft opening portion 101 and a second processing shaft opening portion 102 formed in the processing body 110, 101) 102 and a coplanar opening 103 (104) arranged to intersect the coplanar opening 103 (104).

The first machining-shaft opening portion 101 and the second machining-shaft opening portion 102 are arranged on the machining axis line. The object to be processed 100 is moved along the machining axis.

In this embodiment, the co-planarizing opening is formed at two places. The first airplane opening portion 103 is used when the jig unit 20 is vertically installed (first embodiment) and the second airplane installing opening portion 104 is used when the jig unit 20 is horizontally installed 2 embodiment).

Different machining operations can be performed when the tool 50 is inserted through the first tooling opening 103 and when the tool is inserted through the second tooling opening 104. [

For example, when the tool 50 is inserted through the first construction opening 103, the inside of the object 100 can be ground. When the tool 50 is inserted through the second projecting opening 104, the inside of the object 100 can be machined.

Since the object to be processed 100 is moved along the work bed 10, the co-planarizing opening 103 is located on a co-planar line only at a specific position.

A jig flange 112 is formed on the processing body 110 so as to be pressed against the jig arm 24. The jig flange may not be formed depending on the object to be processed, and the processing body 110 itself may be pressed and fixed.

The main spindle unit 30 is rotated by receiving a driving force. The spindle spindle unit 30 is the same as the spindle spindle. In the present embodiment, the main spindle unit 30 is not moved. Unlike the present embodiment, the spindle spindle unit 30 can be configured to be moved along the machining axis line.

The auxiliary spindle 42 is located on the machining axis line and is rotated on the machining axis line. In the present embodiment, the auxiliary spindle unit 40 is not rotated by the magnetic force.

The auxiliary spindle unit 40 is moved along the machining axis line.

The auxiliary spindle unit 40 includes a auxiliary spindle 42 disposed on the machining axis line and an auxiliary transfer module (not shown) for moving the auxiliary spindle 42 along the machining axis line.

The auxiliary spindle 42 is rotatable in the circumferential direction on the working axis line. The auxiliary spindle 42 can be engaged with the tool 50. The auxiliary spindle 42 may be rotated in a state of being engaged with the tool 50.

The auxiliary transfer module includes an actuator and a linear guide like the work-bed transfer module. The auxiliary transfer module can move the auxiliary spindle 42 along the machining axis and can support the auxiliary spindle 42.

In the present embodiment, a hydraulic cylinder is used as the actuator. A structure using a ball screw and a servo motor may be applied, unlike the present embodiment.

Since the structure and operation of the auxiliary transfer module are generally known to those skilled in the art, a detailed description thereof will be omitted.

In the present embodiment, the gripper unit 60 is installed in the work bed 10. When the work bed 10 is moved, the gripper unit 60 is also moved together, and the tool shaft is moved together.

The gripper unit 60 moves the tool 50 on the co-planer.

The tool 50 is for machining the interior of the object to be processed 100.

The tool 50 is inserted into the object 100 by the gripper unit 60. A tool 50 located inside the object 100 is engaged with the main spindle 32 and the auxiliary spindle 42. [

The gripper unit 60 includes a gripper body 62 mounted on the workpiece bed 10 and a gripper body 62 disposed between the gripper body 62 and the workpiece bed 10 to guide the movement of the gripper body 62 A gripper 66 disposed on the gripper body 62 and to which the tool 50 is fixed; a gripper 66 mounted on the workpiece 10 to move the gripper body 62, And a gripper transfer module 68 for transferring the gripper.

The gripper body 62 may be moved along the gripper guide 64.

The gripper guide 64 may be a linear guide for guiding the linear movement of the gripper body 62. Instead of the linear guide, a rail may be provided.

The gripper 66 may be manufactured in the form of a clamp so as to hold the tool and fix it. In the present embodiment, the gripper 66 moves the tool 50 therebetween.

The gripper 66 is formed in the shape of '⊂'. The tool is located inside of?. The tool 50 moves on the co-planed structure while being held by the gripper 66. [

The gripper 66 prevents the tool 50 from being separated in the vertical direction.

The gripper transfer module 68 uses a hydraulic cylinder in this embodiment.

The gripper transfer module 68 linearly moves the gripper body 62. An operating rod 69 of the gripper transfer module 68 is coupled to the gripper body 62. When the operating rod 69 is moved, the gripper 66 is moved along the tool axis.

The tool 50 is coupled to the main spindle 32 and the auxiliary spindle 42 and is rotated. The tool 50 is formed with a coupling groove 51 to which the main spindle 32 and the auxiliary spindle 42 are coupled.

When the object 100 is machined, the engaging groove 51 is positioned on the machining axis line.

The tool 50 is rotated on the machining axis line.

The tool 50 is rotated in place and the workpiece 100 is moved while the workpiece bed 10 is moved so that the tool 50 and the object 100 ).

Hereinafter, the operation of the machining apparatus according to the present embodiment will be described in more detail.

First, the object to be processed 100 is fixed to the jig unit 20. The workpiece 100 can be manually installed by an operator. A device for automatically feeding the object 100 to the jig unit 20 may be provided.

After the object 100 is placed on the jig unit 20, the jig actuator 28 is activated and the jig arm 24 fixes the object 100 to the jig base 22. ( 1)

After the object 100 is fixed, the gripper 66 is moved along the co-planar line and enters the tool opening 103. The tool 50 mounted on the gripper 66 is positioned inside the object 100 through the tool opening 103. (See Fig. 9, S10)

The tool 50 is stopped at a position where the machining axis and the tool construction intersect.

The workpiece 10 is moved toward the main spindle 32 in a state where the tool 50 is positioned inside the object to be processed 100.

When the work bed 10 is moved, the tool 50 is still in the gripper 66. That is, when the work bed 10 is moved, the gripper unit 60 and the object to be processed 100 are moved toward the main spindle 32 side together. (See Fig. 10, S20)

When the workpiece 10 is moved, the object 100 is moved on the working axis.

The main spindle 32 is inserted into the engaging groove 51 of the tool 50 by the movement of the workpiece 10. The main spindle 32 passes through the jig base 22 and is engaged with the tool 50. The movement of the workpiece 10 is a process of coupling the main spindle 32 and the tool 50 together.

The auxiliary spindle 42 can also be moved toward the object 100 when the workpiece 10 is moved to the spindle 32 side.

Movement of the workpiece 10 (engagement with the tool) and movement of the auxiliary spindle 42 can be performed simultaneously. When the movement of the workpiece 10 and the movement of the auxiliary spindle 42 are simultaneously performed, the working time can be shortened.

Unlike the present embodiment, the movement of the workpiece 10 and the movement of the auxiliary spindle 42 may be performed in sequence with a time difference.

The auxiliary spindle 42 is inserted into the other side of the tool 50 after the main spindle 32 is inserted into one side of the tool 50 in this embodiment.

The main spindle 32 and the auxiliary spindle 42 are inserted and coupled to both sides of the tool 50, respectively. The auxiliary spindle 42 can press the tool 50 toward the main spindle 32 side.

After the main spindle 32 and the auxiliary spindle 42 are coupled to the tool 50, the gripper 66 is retracted and separated from the tool 50. (Refer to Fig. 12, S40)

The main spindle 32 is rotated to machine the object 100 and the tool 50 coupled to the main spindle 32 is rotated. The auxiliary spindle 42 coupled to the other side of the tool 50 is rotated while pressing the tool 50 toward the spindle 32 side.

The tool 50 is rotated in place.

In order to process the interior of the object 100, the work bed 10 is moved along the machining axis.

When the tool 50 is rotated in place, the workpiece 10 is brought into contact with the workpiece 100 by the movement of the workpiece 10, and the inside of the workpiece 100 is cut by the contact.

A machining apparatus according to a second embodiment of the present invention will be described with reference to Figs. 13 to 15. Fig.

The machining apparatus according to the present embodiment has the jig unit 20 installed horizontally on the work bed 10. In this embodiment, the gripper 66 is inserted through the second tool side opening 104.

The rest of the configuration is the same as that of the first embodiment, and a detailed description thereof will be omitted.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the foregoing detailed description, and all changes or modifications derived from the meaning and scope of the claims and the equivalents thereof are included in the scope of the present invention Should be interpreted.

10: work bed 20: jig unit
22: jig base 24: jig arm
25: jig bracket 26: hollow shaft
28: jig actuator 29: actuator rod
30: spindle spindle unit 32: spindle spindle
40: Auxiliary spindle unit 42: Auxiliary spindle
50: tool 51: tool groove
60: gripper unit 62: gripper body
64: gripper guide 66: gripper
68: gripper transfer module 100: object to be processed
101: first machining shaft opening portion 102: second machining shaft opening portion
103: first construction opening 104: second construction opening

Claims (7)

A workpiece 10 on which the object 100 is mounted;
A jig unit (20) installed on the work bed (10) and capable of selectively fixing the object to be processed (100);
A gripper unit (60) for inserting the tool (50) into the object (100) and detachable from the tool (50);
A main spindle unit 30 disposed on one side of the workpiece 10 and rotated by a provided driving force and coupled with the tool 50 and inside the object 100 to rotate the tool; Comprising a processing device. The method according to claim 1,
An auxiliary spindle unit (40) disposed on the other side of the workpiece (10), facing the main spindle unit (30) and rotated in association with the tool (50) within the object to be processed (100); Further comprising: The method according to claim 1,
The object to be processed,
A first machining shaft opening (101) into which the main spindle unit is inserted;
A second processing shaft opening (102) inserted into the auxiliary spindle unit;
And a cooperating opening into which the gripper unit is inserted. The method of claim 3,
An auxiliary spindle unit (40) disposed on the other side of the workpiece (10), facing the main spindle unit (30) and rotated in association with the tool (50) within the object to be processed (100); Further comprising:
Wherein the main spindle unit and the auxiliary spindle unit are positioned on a working axis line,
Wherein when the object to be processed is machined, the object and the tool are positioned on the machining axis line, and the gripper unit is positioned on a co-planar line intersecting the machining axis line. The method of claim 4,
Wherein the main spindle unit is fixed and the work bed is linearly movable in the direction of the machining axis through a workpiece transfer module and the auxiliary shaft spindle unit is machined by machining Device. The method of claim 5,
The jig unit includes:
And is vertically or horizontally installed on the work bed, and is linearly moved along the work axis line. The method according to any one of claims 1 to 6,
The jig unit (20)
A jig base (22) fixed to the work bed (10);
A jig arm (24) installed on the jig base (22) and assembled to the jig base (22) and rotated with respect to the jig base (22) to fix the object;
(26) for assembling the jig arm (24) and the jig base (22) and forming a rotation axis of the jig arm (24);
A jig actuator (28) for rotating the jig arm (24) and supporting the jig arm (24);
And an actuator rod (29) installed on the jig actuator (28) and linearly moved and engaged with the jig arm (24) and the pin (23) to rotate the jig arm (24).

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