JPH03196935A - Finishing machine with setting device for work carrying in and out - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a processing machine equipped with a workpiece loading/unloading setting device for loading/unloading a pallet on which a workpiece is installed to a processing site and setting the pallet.

[Conventional technology]

In general, a wire electrical discharge machine uses a vertically running portion of a wire electrode to generate electrical discharge between the workpiece and the wire electrode to machine a workpiece.

The ear electrode is guided by various rollers such as a tension roller and a brake roller in an automatic wire supply device, and is supplied to a wire head having an appropriate tension applied thereto.

On the other hand, the X-Y table with the workpiece attached moves in the X71′ij and Y directions according to the machining status of the workpiece according to commands from the N Cg station, and both movements are combined and fed to the wire head. The force between the wire electrode and the wire electrode (machining progresses, and during machining, the wire electrode and the X-Y table repeat servo movement, and the workpiece is electrically discharge-machined into a predetermined machining shape by the relative movement of the two.

Recently, regarding wire electrical discharge machines, machining of large workpieces,
Processing such as progressive die processing and unmanned processing through automation is increasing. When performing such wire electrical discharge machining automatically, the running wire electrode during electrical discharge machining is
Accordingly, a wire electrode exchange device is provided that automatically exchanges wire electrodes. For example, JP-A-63-1396
No. 16 discloses a wire electrode exchange device.

In addition, the automatic wire electrode feeding method for a wire electrical discharge machine is
For example, Japanese Patent Application No. 63-13, which is an application filed by the present applicant.
It is disclosed in No. 96.16. Furthermore, a wire electrical discharge machine that automatically takes out a core from a workpiece is disclosed in, for example, Japanese Patent Application No. 1-98878 filed by the present applicant.

[Problem to be solved by the invention]

However, in conventional wire electric discharge machines, there is no way to automatically set and fix the workpiece to the jig base on the X-Y table of the wire electric discharge machine, which is an obstacle to fully automating the wire electric discharge machine. It becomes. Therefore, the workpiece carried into the wire electrical discharge machine is automatically set and fixed, thereby configuring the wire electrical discharge machine as a fully automatic device, and unmannedly discharges the workpiece into the wire electrical discharge machine day and night. It is desired that the processing be performed continuously.

The purpose of this invention is to solve the above problems,
The pallet with the workpiece set in a predetermined position is carried by a pallet changer or the like to a processing table that serves as a reference set on the table of a processing machine such as a wire electrical discharge machine, the pallet is set as a reference on the processing table, and the pallet is pulled in. The workpiece is automatically set and fixed in a predetermined position by the combination extrusion device and clamping device, and the workpiece is set accurately and reliably on the processing bench on the table, improving the reliability of setting accuracy, and the workpiece After processing the workpiece, the pallet with the workpiece set is automatically transferred from the processing table to the pallet changer side, and the above steps are repeated to carry in, set, process, and process the workpiece. It is an object of the present invention to provide a processing machine equipped with a work vA carry-out step setting device that can carry out each carry-out step automatically and unmanned continuously.

[Means to solve the problem]

In order to achieve the above object, the present invention is configured as follows. That is, the present invention provides a processing table mounted on a table, a processing tank cover device disposed on the processing tank mounted on the table and equipped with a slide cover that can open and close an entrance, and a processing tank cover device that is equipped with a processing table that is installed on a table and that is equipped with a sliding cover that can open and close an entrance and exit. a pallet pulling/extruding device for pulling in and pushing out the pallet being carried in and out from the processing table; and a clamping device for fixing the pallet carried onto the processing table to a processing reference part. The present invention relates to a processing machine with a workpiece loading/unloading setting device.

In this processing machine equipped with a workpiece loading/unloading setting device, the pallet has a cutout hole in the center that is wider than the processing area for running the wire electrode, and the processing table has a cutout hole wider than the processing area for setting the pallet at a predetermined position on the processing table. a plurality of reference holes provided at predetermined positions from the reference means and outside the machining area of the processing machine for setting workpieces at predetermined positions on the pallet; It has the following.

In addition, in this processing machine equipped with a workpiece loading/unloading setting device,
The clamp device includes a connecting bar provided on the processing table, a clamp provided on the connecting bar, and an actuator that moves the connecting bar up and down, and the actuator moves the reference means of the pallet to the processing table according to a command from a controller. It operates while the pallet is held stationary at a predetermined position by pressing against the reference means.

In addition, in this processing machine equipped with a workpiece loading/unloading setting device,
A reference surface cleaning device is provided to clean the reference surface of the reference means of the processing table and the reference surface of the reference means of the pallet.

[Effect]

Since the processing machine with a workpiece loading/unloading setting device according to the present invention is constructed as described above, it operates as follows.

That is, this processing machine with a workpiece loading/unloading setting device has a processing table equipped with a processing reference means arranged on a table, and a workpiece is set at a predetermined position on a pallet equipped with a processing reference means. By simply fixing the pallet carried onto the processing table to the processing reference area using the pallet pull-in/extrusion device and the clamp device, the workpiece can be accurately and reliably set in the processing area of the processing machine. I can do it. Therefore, if a pallet changer or the like is used to carry the pallet into and out of the processing table, the workpiece can be automatically and reliably and accurately moved from the pallet changer to a predetermined position on the processing table. In addition, after machining a workpiece, the pallet can be automatically carried out from the machining table to the pallet changer side.

Moreover, the pallet is pulled into and pushed out from the processing table by the pallet pulling and pushing out device,
In addition, by operating the clamp device in conjunction with the pallet pull-in and push-out device, the pallet can be positioned with a high degree of accuracy with respect to the processing table.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a processing machine with a workpiece loading/unloading setting device according to the present invention will be described with reference to the drawings.

With reference to FIGS. 1, 2, 3, and 4, an outline of an embodiment of a processing machine with a workpiece loading/unloading setting device according to the present invention will be explained. Fig. 1 is a schematic plan view showing an embodiment of this processing machine with a workpiece loading/unloading setting device, Fig. 2 is a schematic side view of Fig. 1, and Fig. 3 is the head of the processing machine shown in Fig. 1 with the head removed. FIG. 4 is a schematic side view of FIG. 3. In this embodiment, the processing machine is one commonly used for the wire electrical discharge machine 1, but the processing machine is not limited to the wire electrical discharge machine, but can be applied to other processing machines that machine workpieces. Alternatively, it can be used not only to prevent scattering of machining liquid, machining debris, etc., but also as a guard for safety. Furthermore, the term "workpiece" as used herein refers not only to a workpiece, but also to a workpiece that has been machined, and can be assembled, final finished, and the like.

In this processing machine equipped with a workpiece loading/unloading setting device, the pallet loading/unloading device 2 is mainly a pallet retracting/extruding device 1 provided in the wire electric discharge machine 1! and clamp device 7
, and a pallet changer 12 installed in front of the wire electric discharge machine 1. The wire electric discharge machine 1 can be equipped with an automatic wire electrode supply device 3, a wire electrode exchange device, a device for automatically taking out a core from a workpiece, etc., as in the conventional one. In the wire electrical discharge machine 1, the wire electrode 9 is guided by various rollers such as a tension roller and a brake roller in the automatic wire electrode supply device 3, and is applied with appropriate tension, runs vertically through the head 6, and passes through the wire guide. It is supplied to a wire head with a On the other hand, workpiece W
is set in advance on each pallet 10, and the pallet 10 is
- It is automatically installed by the pallet loading/unloading device 2 on the processing table 17 fixed to the jig base 4A which is mounted on the Y table 4 in an electrically insulated state.

Therefore, after setting the pallet 10 on the processing table 17, an electric discharge is generated between the workpiece W fixed on the pallet IO and the wire electrode 9, and the electric discharge energy is used to make the workpiece W
It is used to process. The XY child table moves in the X direction and the Y direction according to the machining status of the workpiece W based on commands from the NC device, and the movements of both are combined and machining is performed between it and the wire electrode 9 supplied to the wire head. During machining, the wire electrode 9 and the X-Y table 4 repeat servo movement, and the workpiece W is electrically discharge-machined into a predetermined machining shape by the relative movement of the two.

This processing machine with a workpiece loading/unloading setting device includes a clamp device 7 provided on a processing table 17 fixed to a jig head 4A on an XY child table, and a clamp device 7 for pulling the pallet 10 into the processing table 17 when loading/unloading the pallet 10. Alternatively, a pallet pulling/extrusion device 11 provided on the processing table 17 for extruding from above the processing table 17 is provided. Each of the above-mentioned parts will be generally explained with particular reference to FIGS. 5, 6, and 7. Fig. 5 is a plan view showing various parts mounted on the X-Y table of the processing machine, Fig. 6 is a front view showing various parts mounted on the X-Y table of the processing machine, and Fig. 7 is a plan view showing the parts mounted on the X-Y table of the processing machine. FIG.

A jig base 4A is fixed on the X-Y table 4 of the wire electric discharge machine 1 in an electrically disconnected state, a machining tank 8A is attached to the jig base 4A, and a machining fluid is contained in the machining tank 8A. A processing tank cover device 8 with an openable and closable slide cover 5 is provided to prevent water from scattering. A pair of processing tables 17 serving as position reference means are fixed to the upper surface of the jig base 4A. These processing tables 17 are located on both sides of the jig base 4A, and a clamping device 7 and a pallet pulling/extruding device 11 are fixed thereto.

The machining table 17 in this wire electric discharge machine 1 extends in the moving direction of the pallet 10 and is fixed on the jig base 4A on the XY table 4 so as to support both ends of the bullet 10.

This processing table 17 is a jig base 4 on the X-Y table 4.
X-Y fixed at A and servo moved by NC device
It is configured to move along with the horizontal movement of the table 4, and its positional relationship with respect to the travel path along which the wire electrode 9 travels is determined in advance. A connecting nozzle 14 attached to the processing table 17 is provided with a large number of guide rollers 21 facing both sides of the noglet 10 in order to guide the pallet 10. These guide rollers 21 function to smoothly move the pallet 10 with respect to the processing table 17. Furthermore, a positioning member 57 is set at the upper end of the processing table 17. On the upper part of the positioning member 57, a large number of guide balls 58 (five on each side in FIG. 5) are rotatably arranged in line in the moving direction of the pallet IO. As shown in FIG. 8, these guide balls 58 are urged upward by a spring 62 so as to protrude from the upper surface 63 of the positioning member 57 when the pallet IO is moved in and out. In FIG. 8, the state in which the clamping device W7 is activated and the pallet 10 is fixed on the processing table 17 is shown by the two-dot chain line, but the ball 58 is in a state before being pushed down via the pallet 10. , the state in which the spring 62 protrudes is shown by a solid line. In addition, in FIG. 9, the bullet 10
is shown fixed on the processing table 17, and the balls 58 are pushed down via the pallet 10. Therefore, when carrying the pallet 10 from the valet/ ) table 29 to the processing table 17 and when carrying it out from the processing table 17 to the valet/7 table 29, the guide balls 58 are moved against the upper surface of the positioning member 57 by the spring force of the spring 62. It protrudes from 63 and functions to smoothly move the pallet 10.

Further, when the pallet 10 is set on the processing table 17 and fixed with the clamp device 7, the guide balls 58 are pushed in against the spring force of the spring 62, and the reference surface 56 on the lower surface of the pallet 10 is aligned with the positioning member 57. By contacting the reference surface 63 of the pallet 10, the pallet 10 is accurately and reliably positioned in a predetermined height direction with respect to the processing table 17.

In this processing machine equipped with a workpiece loading/unloading setting device, the clamping device 7 is particularly shown in FIGS. 6, 10, and 12.
14, 15 and 16.

Fig. 10 is a plan view showing the barre throat fixed on the processing table, Fig. 12 is a schematic perspective view showing the clamp device, and Fig. 14 is a cross section showing the pallet fixed on the processing table by the clamp device. 15 is a side sectional view of FIG. 14, and FIG. 16 is a sectional view showing the air cylinder of the clamp device.

This clamp device 7 is attached to the side of each processing table 17 via brackets 64 and 66, and the pallet 1
0 and has the function of fixing the valves (10) on the processing table 17. Clamp device 1
1f7 is composed of a connecting bar 14, a pair of clamps 15 placed at both ends of the connecting bar 14, and an air cylinder 16 placed at the center of the connecting bar 14.

The clamping device 7 is provided with a pallet fixing sensor 16A and a pallet release sensor 16B that detect when the air cylinder 16 is activated to fix or release the barrette 1-10 onto the processing table 17. As shown in FIGS. 14 and 15, a bracket 64 fixed to the processing table 17
A support rod 65 is slidably attached via a bush 67 to the support rod 65 .

A through hole formed in the connecting bar 14 passes through the upper part of the support rod 65, a clamp 15 is arranged on the upper surface of the connecting bar 14, and the clamp 15 is screwed into a threaded part provided at the upper end of the support rod 65. Fixed. Furthermore, clamp 1
5 is fixed to the connecting bar 14 with bolts 68. Further, the air cylinder 16 for vertically moving the connecting bar 14 is fixed to the processing table 17 by a bracket 66, as shown in FIGS. 7 and 16.

The upper end of a piston rod 70 fixed to a piston 69 that reciprocates within the air cylinder 16 passes through the connecting bar 14, and a nut 71 is screwed into a threaded portion formed at the tip of the piston rod 70. A connecting bar 14 is fixed to the piston door 0. Therefore, if air is introduced into the air cylinder 16 through the air passage 101,
The piston 69 moves downward, and the piston door 0 moves downward. Therefore, the connecting bar 14 fixed to the piston rod 70 moves downward. To move the connecting bar 14 downward, the clamps 15 fixed to both ends of the connecting bar 14 are moved downward, and the pallet 10 is pressed onto the processing table 17, thereby fixing the pallet 10 to the processing table 17.

In this processing machine equipped with a workpiece loading/unloading setting device, a pallet 10 is particularly shown in FIGS. 10 and 11. FIG. 11 is a schematic perspective view for explaining the pallet.

This pallet 10 is used to preset various workpieces W at predetermined positions, and is preferably made of a rust-resistant material such as stainless steel. It has a cutout hole 19 in the center that is wider than the processing area of 1. The end face 22 of the pallet 1O on the side facing the wire electric discharge machine 1 is provided with a convex shape as a machining reference positioning means provided in the wire electric discharge machine 1 in order to set it at a predetermined position in the horizontal direction on the work table I7. A concave reference surface 20 as a reference means that matches the positioning stop 23 having a reference surface 81 and a flat reference surface 82 as a reference means that matches the flat positioning stop 24 are formed.

The positioning stoppers 23 and 24 are preferably made of a rust-proof and wear-resistant material such as ceramics or carbide, and are attached to the processing table 17 so as to be replaceable. Further, a reference surface 56 (see FIGS. 8 and 9) is formed on the lower surface of the pallet 10 in order to set the vertical position of the pallet 10 with respect to the processing table 17.

Further, in order to set the workpiece W at a predetermined position on the pallet 10, a large number of reference holes 98 are formed at predetermined positions from the reference plane 20 and outside the machining area of the wire electric discharge machine 1. In other words, depending on the size and shape of the workpiece,
The workpiece W is placed on the barrette 1-10, and the workpiece W is fixed to the pallet 10 by passing fixing means such as bolts through the plurality of reference holes 98. Therefore, if the reference hole 98 for fixing the workpiece W is determined in advance according to the type of the workpiece W, the positioning stopper 23.2 that serves as the reference for the processing table 17
Positioning of the workpiece W from 4 can be achieved accurately. In FIG. 10, the case of four workpieces W is shown with chain lines. In some cases, the reference block 105
It is also possible to set it by pressing the workpiece W against it. Therefore, simply by bringing the reference surface 20.82 of the pallet 10 into contact with the positioning stopper 23.24 of the processing table 17 and fixing it,
It becomes possible to machine the workpiece W into a predetermined shape.

This pallet 10 is a machining table 17 of a wire electric discharge machine 1.
It is fixed by a plurality of clamps 15 of the clamping device 7, and has edges 99 on both sides pressed by the clamps 15. Furthermore, positioning stoppers 23 and 24 are provided in which the reference surface 20 of the barrel l-10 is provided on the processing table 17.
In order to press the
A locking hole 25 is formed in which a locking member 27 provided at the end of the piston rod of the air cylinder 26 of the pallet pulling/extruding device 11 provided at 7 locks.

In this processing machine with a workpiece loading/unloading setting device, the pallet pulling/extruding device 11 for pushing or pushing out the pallet 10 to a predetermined position on the processing table 17 is particularly equipped with a first
1 and 13. FIG. 13 is a sectional view showing the pallet pulling and pushing device.

This pallet pull-in and push-out device 11 has a positioning stopper 23 provided with a reference surface 20 of the pallet 10 on the processing table 17.
．． It has an air cylinder 26 provided on the processing table 17 for pressing against the workpiece 24. This air cylinder 26 is a double-acting cylinder, and air chambers 54.55 are formed on both sides of the piston 43 that reciprocates within the air cylinder 26, and air passages 47.55 are formed in the air chambers 54.55 on either side. By introducing air through 48, the piston 43 reciprocates within the air cylinder 26. Furthermore, air cylinder 2
For example, a retraction sensor 26A and an extrusion sensor 26B such as a reed switch that detect the limit point of the reciprocating movement of the piston 43 are provided for the piston 43. When the piston 43 moves, the retraction sensor 26A and the extrusion sensor 26B detect the position of the piston 43, input the detection signal to the controller, and the controller is configured to issue a command for the next operation step. ing.

In this pallet pulling and pushing device 11, a locking member 27 is provided at the end of a piston rod 42 fixed to a piston 43, and the locking member 27 is inserted into a locking hole 25 formed on the lower surface of the pallet 10. It is configured to be removable. That is, the end of the air cylinder 26 opposite to the piston rod 42 is pivotally connected to a bracket 45 attached to the processing table 17 at a pivot point 44 made of a pin or the like. Further, a bracket 49 is attached to the end of the side where the piston rod 42 extends. A piston rod 51 extending from an air cylinder 50 attached to the processing table 17 is pivotally attached to the bracket 49 . Therefore, the air cylinder 26 is supported at one end by the bracket 45 and at the other end by the air cylinder 50 via the bracket 49.

Further, the air cylinder 50 is attached to the processing table 17 via a bracket 61, as shown in FIG. 8 or 9. Therefore, by the operation of the air cylinder 50, the air cylinder 26 can swing up and down about the pivot point 44, thereby causing the locking member 27 attached to the end of the piston loft 42 of the air cylinder 26 to move. Baren)
It becomes possible to engage and detach from the locking hole 25 formed in 10. In this pallet pull-in/extrusion device 11, the extrusion sensor 26
When B detects the piston 43, the air cylinder 50 is operated to control the locking member 27 to engage and disengage from the locking hole 25, and when the retraction sensor 26A detects the piston 43, the air cylinder 26 By controlling the clamping device 7 to operate while maintaining the clamping device 7 in an activated state, the pallet 10 can be accurately and reliably set on the processing table 17. Furthermore, the pallet pulling/extruding device 11 includes:
In order to detect the engagement state or disengagement state between the locking hole 25 of the pallet 10 and the locking member 27 of the pallet pull-in and push-out device 11, a pallet engagement sensor 50A and a pallet separation sensor 50B are provided.

In this processing machine equipped with a workpiece loading/unloading setting device, the processing tank cover device 8 is shown in FIGS. 17 and 18. FIG. 17 is a perspective view illustrating the main parts of the processing tank cover device, and FIG. 18 is a sectional view illustrating the main parts of the processing tank cover device.

This machining tank cover device 8 is an X-
Processing tank 8A attached to jig base 4A on Y table 4
It is placed inside the wire to prevent machining fluid, machining debris, etc. from scattering when wire electrical discharge machining is performed on the workpiece W, and in some cases functions as a guard for safety. The processing tank cover device 8 includes an air cylinder 18 and a processing tank 8.
A cover 78 attached to A, a manual opening/closing cover 79 placed on the side of the cover 78 and pivotally connected to the cover 78, and a slide cover 5 that is slidable relative to the cover 78 and constitutes a loading/unloading entrance for the pallet 10. It is configured. The processing tank cover device 8 includes an air cylinder 18 that is an actuator that slides the slide cover 5 for opening and closing the loading/unloading port of the processing tank cover device 8. Air cylinder 18 is a double-acting cylinder, and the cylinder is made of non-magnetic material. A piston 72 made of a magnetic material is disposed within the cylinder of the air cylinder 18 , and the piston 72 moves into the air cylinder 1 by supplying air to either side of the piston 72 inside the air cylinder 18 .
It moves back and forth within 8. The slide cover 5 of the processing tank cover device 8 is located on the side facing the barrette B loading/unloading device 38 provided in the pallet loading/unloading device 2.

Regarding the reciprocating mechanism of the slide cover 5 in this machining tank cover device 8, an air cylinder 18 and a piston 72 that reciprocates within the air cylinder 18 are arranged below the machining tank cover device 8, and the piston 72 reciprocates. are air passages 77 provided at both ends of the air cylinder 18.
This is achieved by supplying air to either one of the two. A cover guide 75 is fixed to the cover 78, and a guide roller 76 is attached to the cover guide 75. Further, a guide rail 74 is fixed to the slide cover 5, and a guide roller 76 is attached to the guide rail 74.
are mated. Furthermore, a bracket 73 is fixed to the lower end of the slide cover 5, and a bracket 80 made of a magnet, that is, a magnetic material, is fixed to the end of the bracket 73. This bracket 80 attracts a piston 72 made of a magnetic material that reciprocates within the air cylinder 18.

Therefore, when the piston 72 moves back and forth within the cylinder,
The bracket 80 adsorbing the piston 72 moves as the piston 72 moves. When the bracket 80 moves back and forth, the bracket 73 to which the bracket 80 is fixed
moves back and forth. When the bracket 73 is moved back and forth, the slide cover 5 to which the bracket 73 is fixed is moved by the cover guide 7.
It moves back and forth while being guided by guide rollers 76 provided at 5.

This processing tank cover device 8 is provided with an open end sensor 18A for detecting the open state of the slide cover 5 and a closed end sensor 18B for detecting the closed state of the slide cover 5 in order to detect the open/closed state of the slide cover 5.

The open end sensor 18A and the closed end sensor 18B can be provided to the cover 78, the slide cover 5, or the air cylinder 18 as shown. Therefore, the open end sensor 18A detects that the slide cover 5 is in the open state, and upon receiving the detection signal, the controller moves the pallet 10 located on the pallet stand 29 to the X-Y table of the wire electric discharge machine 1. 4, or move the processing table 17 onto the processing table 17 provided on the
Control is performed to move the pallet 10 on 7 from the processing table 17 to the pallet table 29. Further, the closed state of the slide cover 5 is detected by the closed end sensor 18B, and the controller receives the detection signal and controls the wire electric discharge machine 1 to operate.

Various embodiments of a mechanism for positioning the pallet IO at a predetermined horizontal position on the processing table 17J in the wire electric discharge machine 1 will be described with reference to FIGS. 19 to 24. In each drawing, members that perform the same functions are designated by the same reference numerals, and redundant explanations will be omitted.

First, in FIG. 19, the end face 22 of the pallet 10 is formed with a concave reference surface 20 cut out at 90 degrees, and a flat reference surface 82 at a location different from the concave reference surface 20. In addition, on the processing table 17 of the wire electric discharge machine 1,
A positioning bar 23 having a 90 degree protruding convex reference surface 81 that engages a concave reference surface 20 of the pallet 10 and a flat reference surface 83 that abuts a flat reference surface 82 of the pallet yhlO. A stopper 24 is provided. Therefore, if the pallet 10 is pushed onto the machining table 17 of wire electric discharge machining a1, the concave reference surface 20 and the convex reference surface 8
1 engages with the flat reference surface 82 and the flat reference surface 8
It abuts against 3. Therefore, the baren 1-10 is the processing table 17
It will be positioned at a predetermined position above.

Alternatively, the horizontal positioning mechanism for the pallet 10 shown in FIG. 20 has the same structure and functions as the one shown in FIG. 19, except that the concave and convex portions are reversed. A convex reference surface 84 is formed on the pallet 10, and a concave reference surface 85 is formed on the positioning stopper 23.

Alternatively, the horizontal positioning mechanism for the pallet 10 shown in FIG. 21 has the same structure and function as that shown in FIG. 19, except for the structure in which the cylindrical body 86 is fitted into the positioning stopper 23. It is something. When the cylindrical body 86 engages with the concave reference surface 20 of the barrel 10, the outer peripheral surface of the cylindrical body 86 that comes into contact with the concave reference surface 20 constitutes a reference surface 87.

Alternatively, the horizontal positioning mechanism of the baren 10 shown in FIG. 22 has the same structure and function as the one shown in FIG. 21 except that the cylindrical body is provided in reverse. The cylindrical body 88 is fitted onto the end surface 22 of the pallet 10.

When the cylindrical body 88 engages with the concave reference surface 85 formed on the positioning stopper 23, the outer peripheral surface of the cylindrical body 88 that comes into contact with the concave reference surface 85 constitutes a reference surface 89.

Alternatively, the horizontal positioning mechanism for the pallet 10 shown in FIG. 23 has the same structure and function as that shown in FIG. 20, except that the positioning member is composed of two cylindrical bodies. It is. Two cylindrical bodies 90 are fixed to the processing table 17 as positioning members so as to be spaced apart from each other. When the convex reference surface 84 of the pallet 10 is inserted into each cylindrical body 90 and engaged, and the convex reference surface 84 of the pallet 10 engages with each cylindrical body 90, the convex The outer peripheral surface of the cylindrical body 88 that comes into contact with the shaped reference surface 84 constitutes the reference surface 91 .

Alternatively, the horizontal positioning mechanism for the pallet 10 shown in FIG. 24 has the same structure and function as the one shown in FIG. 23, except for the structure in which two cylindrical bodies are provided in reverse. be. Two cylindrical bodies 92 are fixed to a pallet IO in a spaced apart manner. The convex reference surface 81 of the positioning stopper 23 is engaged by being inserted between each cylindrical body 92, and when the convex reference surface 81 of the positioning stopper 23 engages with each cylindrical body 92, The outer circumferential surface of the cylindrical body 92 that comes into contact with the convex reference surface 81 constitutes a reference surface 93 .

Furthermore, the processing machine with the workpiece loading/unloading setting device according to the present invention has a reference surface 63 of the reference member 57 disposed on the processing table 17.
, a reference surface 56 formed on the back surface of the pallet IO, a reference surface 20.82.84.89 on the end surface 22 of the pallet 10, and a reference surface 81.83 formed on the positioning stopper 23.24 provided on the processing table 17. 85, 87, and 91, a reference surface cleaning device is provided. This reference surface cleaning device can be configured with a water jet nozzle that sprays water onto the cleaning surface and an air spray nozzle that sprays air.
Fine machining debris generated during wire electrical discharge machining by the wire electrical discharge machine 1 is removed. Therefore, each reference surface can be cleaned every time the pallet IO is set or at every predetermined period, so the setting of the barrette 10 on the processing table 17 is always reliable and does not adversely affect processing accuracy.

This processing machine with a workpiece loading/unloading setting device is configured as described above, but the air circuit for operating each air cylinder in the pallet loading/unloading setting device is, for example, the 25th
It is configured as shown in the figure. In FIG. 25, symbol E is an air circuit diagram for each air cylinder provided on the wire electric discharge machine 1 side, and symbol F is an air circuit diagram for each air cylinder provided on the pallet changer 12 side. On the wire electric discharge machine 1 side, air from a compressed air supply source 104 is supplied to each air cylinder 16.1B, 26.50 through an air pressure adjustment device 102 and an air switching pulp 52.

Regarding the pallet changer 12 side, compressed air from the compressed air supply source 104 is supplied to each of the air cylinders 13, 31, 32, and 33 through the air pressure adjustment device 103 and the air switching pulp 53.

Compressed air is supplied to each of the air cylinders, and the piston within each air cylinder reciprocates, whereby the operating state of each air cylinder is detected by each sensor. The detection signals detected by each sensor are input to the controller, and in response to each detection signal, the controller issues commands according to the operation process inputted in advance as a sequence, and operates the wire electric discharge machine 1 and pallet changer 12. It is operated to transport the pulp (pulp) 10 into and out of the wire electrical discharge machine 1, and also to transport it into and out of the pallet changer 12.

In the air circuit on the wire electric discharge machine 1 side, the symbol G is
An air cylinder 18 for operating the slide cover 5 of the processing tank cover device 8 is shown.
Compressed air is supplied to the air cylinder 18 through an air switching pulp 18G, and the operating state of the air cylinder 18 is determined by an open end sensor 18A.
and is detected by the closed end sensor 18B.

Reference numeral H indicates each air cylinder 50 for operating each pallet hook for carrying in and out, that is, the locking member 27 provided on both sides of the processing table 17, and each air cylinder 50 is connected to the air switching pulp 50H. Compressed air is supplied, and the operating state of each air cylinder 50 is detected by a pallet engagement sensor 50A and a pallet detachment sensor 50B.

Symbol I indicates each air cylinder 16 for operating each pallet clamp 15 provided on both sides of the processing table 17, and each air cylinder 16 has an air switching pulp 16.
Compressed air is supplied through each air cylinder I6.
The operating state of the pallet is detected by a pallet fixing sensor 16A and a pallet release sensor 16B.

Symbol J indicates each air cylinder 26 for operating each pallet pull-in/extrusion device 11 for carrying in and out pallets provided on both sides of the processing table 17, and each air cylinder 26 has an air switching pulp Compressed air is supplied through the air cylinders 26J, and the operating state of each air cylinder 26 is detected by a retraction sensor 26A and an extrusion sensor 26B.

〔Effect of the invention〕

Since the processing machine with a workpiece loading/unloading setting device according to the present invention is configured as described above, it has the following effects. That is, this processing machine with a workpiece loading/unloading setting device includes a processing table mounted on a table, a processing tank cover device disposed on the processing tank mounted on the table and equipped with a slide cover that can open and close the entrance/exit, and a processing machine. A pallet that presets objects at predetermined positions, a pallet pulling/extrusion device that pulls in and pushes out the pallet being carried in and out from the processing table, and a processing standard for the pallet carried onto the processing table. Since the workpiece is provided with a clamping device for fixing it to the part, the worktable with the workpiece reference means is placed on the table, and the workpiece is placed on the pallet with the workpiece reference means at a predetermined position. If set to , the workpiece can be accurately and reliably placed at the machining site by simply fixing the pallet carried onto the processing table to the machining reference area using the pallet retracting/extruding device and the clamp/device. Can be set to . Therefore, by using a pallet changer or the like to open the slide cover of the machining tank cover device, which functions as a safety guard and to prevent scattering of machining liquid and machining waste, etc., to open the entrance and exit of the workpiece, the machining tank can be opened. The cover device does not become an obstacle, and the pallet can be carried in and out of the processing table, and the workpiece can be automatically and reliably and accurately moved from the pallet changer side to a predetermined position on the processing table. Furthermore, after processing the workpiece, the pallet can be automatically carried out from the processing table to the pallet changer side.

Moreover, the pallet is pulled into and pushed out from the processing table by the pallet pulling and pushing out device,
In addition, by operating the clamp device in conjunction with the pallet pull-in and push-out device, the pallet can be positioned with a high degree of accuracy with respect to the processing table.

In addition, in this processing machine equipped with a workpiece loading/unloading setting device,
The pallet has a cutout hole in the center that is wider than the processing area for running the wire electrode, a reference means that matches the reference means provided on the processing table for setting the pallet at a predetermined position on the processing table, and a machining tool. In order to set the object at a predetermined position on the bullet hole, it has a large number of reference holes provided at predetermined positions from the reference means and outside the machining area, so that it can immediately adapt to various machining shapes for the workpiece. Moreover, the workpiece can be accurately and reliably set at the processing site of the processing machine, and the processing accuracy for the workpiece can be improved.

In addition, in this processing machine equipped with a workpiece loading/unloading setting device,
The clamp device includes a connecting bar provided on the processing table, a clamp provided on the connecting bar, and an actuator that moves the connecting bar up and down, and the actuator moves the reference means of the pallet to the processing table according to a command from a controller. Since the pallet is pressed against the reference member and kept stationary at a predetermined position, the pallet is fixed to the processing table while the pallet is pressed against the reference member, and the processing position of the workpiece is adjusted to the processing position. It can be set accurately and reliably on the table, and the workpiece can be machined immediately upon receiving a signal for fixing the pallet from the clamp device, without adversely affecting the machining accuracy.

Furthermore, in this processing machine equipped with a workpiece loading/unloading setting device,
A reference surface cleaning device is provided to clean the reference surface of the reference means of the processing table and the reference surface of the reference means of the pallet, so that the reference surface of the processing table on which the pallet is set and the reference surface of the pallet are cleaned. The pallet can be cleaned every time the pallet is set or at a predetermined period, and the pallet can always be accurately and reliably set on the processing table, improving the accuracy of processing the workpiece.

[Brief explanation of drawings]

Fig. 1 is a schematic plan view showing an embodiment of a processing machine with a workpiece loading/unloading setting device according to the present invention, Fig. 2 is a schematic side view of Fig. 1, and Fig. 3 is a head of the processing machine in Fig. 1. 4 is a schematic side view of FIG. 3, and FIG. 5 is a plan view showing the pallet mounting area of the processing machine.
Fig. 6 is a front view of the processing machine, Fig. 7 is a side view of the processing machine, Fig. 8 is an enlarged front view showing the relationship of the clamp device, pallet, etc. to the processing table, and Fig. 9 is an enlarged front view showing the relationship of the pallet, etc. to the processing table. A sectional view showing the relationship, Fig. 10 is a plan view showing the barre 7), a clamping device, and a positioning device in this processing machine equipped with a workpiece loading/unloading setting device, Fig. 11 is a perspective view of the pallet, and Fig. 12 is a clamping device. 13 is a side view showing the pallet pulling/extruding device, FIG. 14 is a partially sectional front view of the clamping device, and FIG. 15 is a partially sectional side view of the clamping device shown in FIG. 14. , FIG. 16 is a partially sectional side view showing the air cylinder of the clamping device, FIG. 17 is a perspective view showing an example of the processing tank cover device, and FIG. 18 is the first
Cross section of figure 7, figure 19, figure 20, 21st cabinet, 22nd
23 and 24 are explanatory diagrams showing various examples of the mechanism for positioning the pallet onto the processing table, and FIG. 25 is an illustration of each air cylinder installed in this processing machine equipped with a workpiece loading/unloading setting device. It is an air circuit diagram showing operation. 1-----Wire electric discharge machine, 2-----Pallet loading/unloading device, 3--Wire electrode, 4-----
・ ・ ・ X -Y table, 5 ・ ・ ・ ・ Slide cover, 7 ----- Clamp device, 8- ・ ・ ・ Processing tank cover device, 8a - ---- One processing tank , 10...Pallet, 11---Pallet drawing/extrusion device, 1
2.---Palette changer, 14---1.
One connecting bar, 15-...-clamp, 17...-
Processing table, 20.82--Reference surface, 23.24--
-・Positioning stopper, 98-...Reference hole.

Claims (4)

[Claims] (1) A processing table mounted on a table, a processing tank cover device equipped with a slide cover placed on the processing tank mounted on the table and capable of opening and closing the entrance/exit, a pallet on which workpieces are preset at predetermined positions, A workpiece comprising a pallet pulling/extruding device for pulling in and pushing out the pallet being carried in and out of the processing table, and a clamping device for fixing the pallet carried into the processing table to a processing reference part. Processing machine with loading/unloading setting device. (2) The pallet has a cutout hole in the center that is wider than the processing area for running the wire electrode, and a reference means that matches the reference means provided on the processing table for setting the pallet at a predetermined position on the processing table. and a plurality of reference holes provided outside the machining area and at positions predetermined from the reference means for setting the workpiece at a predetermined position on the pallet. Processing machine with equipment. (3) The clamping device includes a connecting bar provided on the processing table, a clamp provided on the connecting bar, and an actuator that moves the connecting bar up and down, and the actuator moves the reference means of the pallet to the 3. A processing machine with a workpiece loading/unloading setting device according to claim 2, wherein said processing machine operates with said pallet stationary at a predetermined position by being pressed against reference means of a processing table. (4) The processing machine with a workpiece loading/unloading setting device according to claim 1, further comprising a reference surface cleaning device for cleaning the reference surface of the reference means of the processing table and the reference surface of the reference means of the pallet.