JPH0825188A - Work processing system - Google Patents

Abstract

(57) [Summary] The structure of the jig that serves as a medium for fixing the workpiece to the workpiece processing unit in a positioned state is simplified. [Structure] A work transfer mechanism 10 for transferring a work W,
It has a work processing unit 300 for processing the work W in a fixed state. The work transfer mechanism 10 transfers the work W to the cassette jig 200 (200
a-200d), and is conveyed in the state supported. The cassette jig 200 has a knock pin for positioning the work W by fitting it into a knock hole provided in the work W. The work processing unit is a cassette jig 20.
It has a knock pin for positioning 0 at a predetermined position, and a clamp arm 324 for fixing the work W supported by the cassette jig 200.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work machining system for machining a work conveyed by a work conveying mechanism in a state where the work is fixed in a work machining unit.

[0002]

2. Description of the Related Art Conventionally, as a machining jig which serves as an intermediate when fixing a work to a machine tool when machining the work, Japanese Utility Model Publication No. 56-126336 (Japanese Patent Application No. 55-126336). No. 021298).
It has a fixed base fixed to a machine tool and a mounting base to which a work (workpiece) is attached separately.

Further, conventionally, in a system in which a work is transported to a work processing unit by a transporting device and the work is fixed to a predetermined position in the work processing unit to process the work, the work is a pallet. It is transported and fixed to the work processing unit. That is, the work is fixed to the pallet in the positioned state, and in this state, the pallet is fixed to the work processing unit in the positioned state, so that the work is fixed in the positioned state in the work processing unit.

[0004]

However, in the above system, the pallet that serves as an intermediary for fixing the workpiece in the positioning state with respect to the workpiece machining unit has a mechanism for positioning the workpiece with respect to the pallet itself.
Similarly, it has two mechanisms for fixing the work to the pallet itself. For this reason, the structure of the pallet becomes complicated accordingly, and the size of the entire system becomes large, and the size of the entire system also becomes large, resulting in high cost.

The above is also true of the processing jig according to the above-mentioned prior application. That is, the processing jig also has two mechanisms, a mechanism for positioning the work and a mechanism for fixing the work.

Therefore, an object of the present invention is to reduce the cost of the entire system by simplifying the structure of a jig that serves as an intermediary for fixing a workpiece to a workpiece processing unit in a positioning state.

[0007]

In order to solve the above-mentioned problems, the invention according to claim 1 has a work transfer mechanism for transferring a work and a work transferred by the work transfer mechanism in a fixed state. A workpiece machining system having a workpiece machining unit for machining a workpiece, wherein the workpiece transport mechanism transports the workpiece while being supported by a jig, and the jig is mounted on the workpiece. The work processing unit has a reference pin for positioning the work by fitting in a provided reference hole, and the work processing unit is supported by the mechanism and a mechanism for positioning the jig at a predetermined position. And a clamp device for fixing the work.

The invention according to claim 2 is the invention according to claim 1, wherein the work transfer mechanism has an index device provided with a plurality of types of the jigs, and the jigs of each type are The parts for the work have different structures corresponding to a plurality of kinds of the works, and the parts for the work processing unit are all adapted to the work processing unit.

The invention according to claim 3 is the invention according to claim 2, wherein the index device shares a part of a retracting mechanism of the reference pin of the jig. It is characterized by being.

[0010]

The invention according to claim 1 has the following effects. The work is supported by the jig and is transferred to the work processing unit by the work transfer device. Then, in the work processing unit, the jig is positioned at a predetermined position, and the work is fixed by the clamp device in this state, so that the work is fixed in the positioned state. Then, the work is processed in that state. Therefore, the jig does not require a mechanism for fixing the work, and the jig can be downsized accordingly, and the jig can be reduced in weight accordingly.

The invention according to claim 2 has the following operation. In the index device, the jig suitable for the type of the work is selected, and the work of the invention is supported by the jig. That is, the part of each jig for the work differs depending on the plurality of kinds of works, and the part for the work machining unit has a structure adapted to the work machining unit. Can be fixed to the work processing unit. Therefore, in this work processing system, it is possible to cope with processing of a plurality of types of works.

The invention according to claim 3 has the following operation. In other words, not all the mechanism for retracting the reference pin of the jig is provided in the jig, but part of it is shared by the index device, so the jig can be made smaller and lighter accordingly. To be

[0013]

Next, an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, this work processing system includes a work transfer mechanism 10 and a work processing unit 30.
It has 0,302. It also has a controller (not shown) for controlling these. The work transfer mechanism 10
It has a work loading mechanism 20, an index device 40 (index table 50), and a work unloading mechanism 190. The work processing unit 300 includes the work fixing device 31.
0 and a work processing device 350. The work processing unit 302 has the same structure as the work processing unit 300.

First, the work transfer mechanism 10 will be described. Work loading mechanism 20 of the work transport mechanism 10
Has a roller conveyor 22, as shown in FIG. A carry-in cylinder 24 is fixedly provided above the roller conveyor 22, and a push-out member 28 is provided on a rod 26 of the carry-in cylinder 24. Further, with respect to the pushing member 28, a guide rail 30 for guiding the horizontal movement of the pushing member 28 is provided. Extruded member 2
8 is provided with a claw portion 32 that presses the work W. Further, the work unloading mechanism 190 in FIG. 1 also has a roller conveyor 192 similar to that described above.

The index device 40 is as follows. As shown in FIG. 2, with respect to the base portion 42, the leg portions 44
The support plate 46 is fixed via. A cylindrical base column 48 is erected on the support plate 46. Base column 48
On the other hand, a disc-shaped index table 50 is rotatably provided. A circular chain plate 52 is concentrically fixed to the lower portion of the index table 50, and a chain (not shown) is wound around the circumference of the chain plate 52. And the base part 4
The sprocket 56 provided on the rotating shaft of the motor 54 (having a speed reducer) provided in 2 is meshed with the chain, and the rotation of the motor 54 causes the chain plate 52 to rotate and the index table 50 to rotate. It has become. Then, when the index table 50 is rotated by a predetermined angle, a rod (not shown) of the cylinder 57 is fitted into a knock hole (not shown) appropriately formed in the index table 50, so that the index table 50 is The rotation angle is fixed. That is, one of the cassette jig setting units 60 described below is connected to the work loading mechanism 10, the work unloading mechanism 190, and the work machining unit 3.
00, 4 so as to correspond to the work processing unit 302
It is designed to rotate every 5 degrees. The support plate 46
Is provided with a plurality of rollers 58 to ensure that the chain plate 52 rotates while maintaining the horizontal state.

As shown in FIG. 1, eight cassette jig setting portions 60 are radially provided on the upper portion of the index table 50. Each cassette jig setting section 60
Has a pair of rails 62. A plurality of rollers 64 are rotatably provided on each rail 62.
Then, the cassette jigs 200a to 200d are set in the cassette jig setting parts 60, respectively. That is,
Four types of four cassette jigs 200a to 200d are set adjacent to each other. The work fixing device 3
A transfer section 66 is provided between the cassette jig setting section 60 corresponding to 10 and the work fixing device 310. The transfer portion 66 also has a pair of rails 67, and each rail 6
A plurality of rollers is rotatably provided at 7.

Here, the cassette jigs 200a to 200d
Will be described with reference to FIGS. 5 and 6. In the drawings and the following description, reference numeral 200 will be used to indicate each cassette jig 200a to 200d as appropriate. Each type of cassette jig 200 (200a to 200
The structure d) is adapted to the type (size, shape, etc.) of the work W to be conveyed and processed. That is, the part (upper part) for the work W has a structure corresponding to each work W. On the other hand, each type of cassette jig 200
All of (200a to 200d) have the same structure with respect to the part (lower part) with respect to the work transfer mechanism 10 and the work processing unit 300.

The cassette jig 200 has a substantially rectangular parallelepiped shape, and has an engaged portion 202 and a stopper 2 at one end thereof.
04 are provided. The stopper 204 regulates the movement of the work W on the cassette jig 200. A pair of guide rails 206 is provided on the upper surface of the cassette jig 200. The guide rail 206 guides and supports each side surface of the work W. Further, on the lower side of the cassette jig 200, a groove-shaped clamped portion 208 having a substantially T-shaped cross section extending in the longitudinal direction is formed.

Further, the cassette jig 200 is provided with two knock pins 210 which can be projected and retracted upward from the upper surface thereof. Both knock pins 210 are fitted into the knock holes H formed in each work W to thereby make the work W
The positioning is performed on the cassette jig 200.
The knock pins 210 have almost the same structure and are urged upward by a compression spring 212. The limit of rise is defined by the stopper portion 214.
An inverted T-shaped engaging portion 216 is formed on the lower portion of the knock pin 210. The inverted T-shaped engaging portion 216 is formed of a small-diameter portion and a large-diameter portion of the lower portion (lowermost end portion) thereof, and has an inverted T-shape as a whole.

Further, as shown in FIG. 6, the cassette jig 2
A knock hole 220 is formed on the lower surface of 00. This is the work fixing device 310 of the work processing unit 300.
On the other hand, it is for being fixed in the positioned state.

Returning to the indexing device 40 in FIGS. 1 and 2, a disc-shaped fixing plate 70 is fixed to the base column portion 48 in FIG. The fixed plate 70 is provided with work moving devices 80 and 81. As shown in FIGS. 1 to 3, the work moving device 80 has a cylinder 82, and a pinion 84 is rotatably provided at the tip of the rod thereof. A lower rack member 86 and an upper rack member 88 are provided for the pinion 84. At the tip of the upper rack member 88, the cassette jig 200 described above is attached.
An engaging portion 90 corresponding to the engaged portion 202 is provided. The lower rack member 86 is fixed to the fixed plate 70. The lower rack member 86 guides the horizontal movement of the pinion 84. Upper rack member 8
The support mechanism 8 (not shown) is capable of advancing and retracting (moving in the left-right direction in the figure) while maintaining a horizontal state.
Therefore, by driving the cylinder 82, the pinion 84
The upper rack member 88 is moved by a distance that is twice the moving distance, and the cassette jig 200 is movable between the index table 50 and the work processing unit 300.

The work moving device 81 is also the work moving device 80.
It has the same structure as the above, and has a cylinder 83, and moves the cassette jig 200 between the index table 50 and the work processing unit 302.

As shown in FIG. 2, a column 72 is provided upright on the fixed plate 70, and an upper support member 74 is provided on the upper portion thereof. The upper support member 74 is provided with a work pressing clamper 76 (cylinder), and the tip portion of the rod serves as a pressing portion 78. The upper support member 74 is also provided with a work unloading cylinder 94. This is the cassette jig 20 on the index table 50.
0 is sent to the roller conveyor 192 (workpiece unloading mechanism 190). The tip of the rod of the work unloading cylinder 94 is a pressing portion 96 that presses the work W.

As shown in FIG. 5, the index device 40 is provided with the following knock pin retracting mechanism 100. The penetrating rod 102 is inserted into each cassette jig setting portion 60 of the index table 50 in a state of being slidable in the axial direction and being prevented from rotating in the axial direction. The inverted T-shaped groove member 1 is provided on the upper portion of the penetrating rod 102.
04 are provided. An inverted T-shaped groove 106 having a substantially inverted T-shaped cross section is formed in the inverted T-shaped groove member 104 in the horizontal direction. A T-shaped groove member 110 is provided at the lower end of the penetrating rod 102. A T-shaped groove 112 having a T-shaped cross section is formed in the lower portion of the T-shaped groove member 110.

On the other hand, a loading side cylinder 114 is provided on the side of the work loading mechanism 20 of the base 42. The tip of the rod 116 of the carry-in side cylinder 114 has a large diameter, and a T-shaped engaging portion 118 having a T-shape as a whole is formed. Further, on the work unloading mechanism 190 side of the base 42, a unloading side cylinder 130 having a similar structure is provided.

As shown in FIG. 3, the work processing unit 300 in FIG. 1 has a base portion 301, on which the work fixing device 310 and the work processing device 350 described above are provided. As shown in FIG. 4, the work fixing device 310.
In the above, two tilt support portions 312 and 314 are provided on the base portion 301. Both tilt support parts 31
A table support member 316 is provided between 2 and 314 so as to be rotatable (tilt) about the tilt center line. The table support member 316 includes a disc-shaped turntable 32.
0 is provided so as to be rotatable about its own central axis. As shown in FIG. 4, the turntable 320 is provided with a cylinder 322, a rod is provided with a clamp arm 324, and a tip portion of the clamp arm 324 is a pressing portion 326. Also, turntable 3
A knock pin 330 is provided on the unit 20 so as to be retractable. Further, a plate-shaped clamper 334 is provided by a cylinder 336 so as to be able to come into contact with and separate from the turntable 320.

As shown in FIG. 3, a work processing device 350.
In the above, the main shaft member 352 is provided so as to be movable in each of the three-dimensional directions while always facing the same direction with respect to the base portion 301. The main shaft member 352 has a drilling tool 35
4 is provided rotatably around its own central axis.

Next, the control content (action) of this system will be described. The work W is conveyed to the index device 40 (index table 50) by the work carry-in mechanism 20 shown in FIG. Then, at that time, the index table 50 rotates based on the signal indicating the type of the work W, and the cassette jigs 200a to 20a.
Of 0d, one corresponding to the work W (referred to as a cassette jig 200) corresponds to the work carry-in mechanism 20.

Then, the work W is placed on the predetermined cassette jig 200 by the pushing member 28 (the claw portion 32) of the carry-in cylinder 24 in FIG. Then, as shown in FIG. 5, the knock pin 210 has the knock hole H of the work W.
It is positioned by fitting to.

The index table 50 is shown in FIG.
The work W is rotated 90 degrees in the counterclockwise direction, and the work W is moved by the work moving device 80 in FIG. 3 onto the turntable 320 of the work fixing device 310 via the passing portion 66. In that state, as shown in FIG. 6, the knock pin 330 is positioned by fitting in the knock hole 220 of the cassette jig 200, and as shown in FIG. 4, the work W is pressed by the pressing portion 326 of the clamp arm 324. To be done. As a result, the cassette jig 200 and the work W are fixed in a positioned state. In that state, the turntable 320 (FIGS. 1 to 3) is rotated by a predetermined angle, and the table support member 316 is tilted by a predetermined angle, so that the work W is drilled by the punching tool 354 of the work processing apparatus 350. Drilling is performed at a predetermined position in a predetermined direction.

After the punching of the work W is completed, the clamp arm 324 (pressing portion 326) in FIG.
And the positioning and fixing state by the knock pin 210 is released, and the work W is moved by the work moving device 80 in FIG.
0). Then, the index table 50 is further rotated counterclockwise by 90 degrees in the drawing, and the work unloading cylinder 94 in FIG. 2 sends the work W to the work unloading mechanism 190 (roller conveyor 192).
The work W is unloaded.

Even after the work W has been conveyed to the index table 50 by the work loading mechanism 20, the index table 50 may be rotated 90 degrees in the clockwise direction in FIG. Good. Further, if both the work processing unit 300 and the work processing unit 302 are operated, the efficiency of drilling the work W will be doubled.

The retracting action of the knock pin 210 of the cassette jig 200 will be described in detail below. As shown in FIG. 5, when the cassette jig 200 is located on the index table 50, the inverted T-shaped engaging portion 216 of each knock pin 210 has an inverted T-shape of the penetrating rod 102.
The inverted T-shaped groove 106 of the groove member 104 is engaged.
Then, when each cassette jig setting part 60 of the index table 50 is in a state corresponding to the work transfer mechanism 10, the T-shaped engaging part 118 of the rod 116 of the carry-in side cylinder 114 is T-shaped of the penetrating rod 102. Groove member 110
Of the T-shaped groove 112. When the loading cylinder 114 is driven and the rod 116 is lowered, the penetrating rod 102 is lowered, both knock pins 210 are lowered, and both knock pins 210 do not project from the surface of the cassette jig 200. Become. In this way, both knock pins 210 are sunk, and the work W is placed on the cassette jig 200 as described above. After the work W is placed, the rod 116 is lifted by the driving of the loading cylinder 114, and both knock pins 210 project from the surface of the cassette jig 200 through the penetrating rod 102, so that each knock pin 210 is The work W is positioned by being fitted into each knock hole H of the work W as described above. At this time, in order to prevent the work W from floating, as described above, the work pressing clamper 76
The work W is pressed downward by the pressing portion 78 of the rod.

When the index table 50 rotates, the T-shaped engaging portion 118 of the carry-in cylinder 114 and the T-shaped groove 112 of the T-shaped groove member 110 of the penetrating rod 102 are disengaged. At this time, both knock pins 210 remain in the protruding state by the urging force of the compression spring 212. The cassette jig 200 moves from the index table 50 to the work processing unit 300 (work fixing device 3).
In case of moving to 10), reverse T of knock pin 210
The inverted T-shaped groove member 10 of the V-shaped engaging portion 216 and the penetrating rod 102.
4 is disengaged from the inverted T-shaped groove 106, and at this time, both knock pins 210 are still in the protruding state by the compression spring 212.

When the index table 50 rotates and the work W is carried out to the carry-out mechanism 190, the reverse of the above is performed. That is, the unloading side cylinder 13
0 (see also FIG. 2) T-shaped engaging portion 112 and penetrating rod 102
The T-shaped groove 112 of the T-shaped groove member 110 of FIG. The state is released, and the work W is delivered to the work unloading mechanism 190 in that state.

As described above, with respect to the work fixing device 310, the work W is positioned by the cassette jig 200, and the work W is clamped by the clamp arm while the cassette jig 200 is positioned by the work fixing device 310. 32
By being pressed by 4, the work W is fixed to the work fixing device 310 in a positioned state. For this reason,
The cassette jig 200 does not require a mechanism for fixing the work W.

In addition, this system is provided with a plurality of types of cassette jigs 200a to 200d, and the cassette jigs 200a to 200d correspond to a plurality of types of works W, and the portions facing the works W have different structures. In addition, the work fixing device 310 has the same structure, and the work W is fixed to the work fixing device 310 via the cassette jig 200 according to the work W to be processed. Has been Therefore, it is possible to perform punching of a plurality of types of works W with one system.

Further, the knock pin 2 of the cassette jig 200
A part of a mechanism for retracting and retracting 10 (particularly in a retracted state) is shared by the index device 40 by the loading cylinder 114 and the loading cylinder 130. That is, the cassette jig 200 itself does not need to be provided with a mechanism for putting the knock pin 210 in the retracted state, and accordingly, the cassette jig 20 can be provided.
This means that 0 will be smaller and lighter.

[0039]

According to the first aspect of the invention, the jig does not need a mechanism for fixing the work and is downsized and reduced in weight. Therefore, the jig and the work transfer mechanism can be downsized. It becomes possible and the cost of the entire equipment can be reduced.

According to the second aspect of the present invention, since it is possible to cope with machining of a plurality of types of works, one system is provided unlike the case where a system for machining a work is provided for each type of work. It is possible to reduce the cost of the entire equipment.

According to the invention of claim 3, since the jig is lightened, the work transfer mechanism for transferring the jig can be downsized and the cost of the entire equipment can be reduced. Become.

[Brief description of drawings]

FIG. 1 is a plan view of a system according to an embodiment of the present invention.

2 is a sectional view of the system of FIG. 1 taken along line II-II.

FIG. 3 is a side view of the system of FIG.

4 is a sectional view taken along line IV-IV of the system of FIG.

5 is an enlarged view showing a cassette jig on an index table in the system of FIG. 1. FIG.
(a) is a side sectional view and (b) is a front sectional view.

6 is an enlarged view showing a cassette jig on a work fixing device in the system of FIG.

[Explanation of symbols]

 10 Work transfer mechanism 40 Index device 100 Knock pin retracting mechanism 200a to 200d Cassette jig 210 Knock pin 300 Work processing unit 324 Clamp arm

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takehiko Hayashi 1-1 Asahi-cho, Kariya city, Aichi Toyota Koki Co., Ltd. (72) Inventor Kazuo Toda 1-1-1 Asahi-cho, Kariya city, Aichi Toyota Koki Co., Ltd. (72) Inventor Toshinaga Maeda 1-1-1, Asahi-cho, Kariya city, Aichi prefecture Toyota Koki Co., Ltd.

Claims (3)

[Claims] 1. A work processing system having a work transfer mechanism for transferring a work, and a work processing unit for processing a work transferred by the work transfer mechanism in a fixed state, The work transfer mechanism transfers the work in a state of being supported by a jig, and the jig has a reference pin for positioning the work by fitting in a reference hole provided in the work. The workpiece processing unit has a mechanism for positioning the jig at a predetermined position and a clamp device for fixing the workpiece supported by the jig. system. 2. The work machining system according to claim 1, wherein the work transfer mechanism includes an index device having a plurality of types of the jigs, and each of the types of jigs is a portion for the work. Has a different structure corresponding to each of a plurality of types of the work, and all parts corresponding to the work processing unit have a structure adapted to the work processing unit. 3. The work machining system according to claim 2, wherein the index device shares a part of a retracting mechanism of the reference pin of the jig. Work processing system.