JP2844488B2 - Pallets that can be used for flexible manufacturing systems - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is intended to perform various kinds of desired machining on a workpiece.
Automatically carry in / out workpieces to / from the specified processing machines in the group of processing machines such as wire electric discharge machine, small hole electric discharge machine, die sinking electric discharge machine, laser beam machine, water jet machine, etc. The present invention relates to a pallet for setting a work that can be used in a flexible manufacturing system in a group of processing machines for processing a workpiece.

[Conventional technology]

2. Description of the Related Art In general, a wire electric discharge machine uses a portion of a wire electrode that travels in a vertical direction, generates a discharge between a workpiece and the wire electrode, and processes a workpiece by discharge energy. In the wire electric discharge machine, the XY table on which the workpiece is mounted moves in the X and Y directions in accordance with the processing status of the workpiece according to a command from the NC device, and the movements of the two are combined to form a gap between the electrode and the electrode. During the machining, the electrodes and the XY table are repeatedly servo-moved, and the workpiece is subjected to electrical discharge machining into a predetermined machining shape by the relative movement of the two.

In addition, a small hole electric discharge machine is used for electric discharge machining of a fine hole or a small hole at a predetermined position of a workpiece, or a start hole for penetrating a wire electrode for electric discharge machining of a workpiece with a wire electric discharge machine. Is subjected to electrical discharge machining at a predetermined position of a workpiece, and a discharge is generated between the workpiece and a pipe electrode to form a fine hole in the workpiece by the discharge energy.

In addition, the die sinking electric discharge machine generates a discharge between a workpiece and electrodes of various shapes such as rods, and processes the workpiece by discharge energy.

Recently, various types of electric discharge machines have been disclosed for achieving machining of large workpieces, progressive feed machining, unmanned machining by automation, and the like. When the electric discharge machining is automatically performed, if the wire electrode is cut or lost during the electric discharge machining, or if the pipe electrode or the rod-shaped electrode wears out, the wire electrode, the pipe electrode, or the engraving tool is used. An electrode changing device for automatically changing electrodes is provided. For example, Japanese Unexamined Patent Publication (Kokai) No. 63-139616 discloses a wire electrode exchanging device, and Japanese Unexamined Patent Publication (Kokai) No. 2-145215 discloses an automatic wire electrode supply method for a wire electric discharge machine.
Japanese Patent Application Publication No. 16-21087 discloses a wire electric discharge machine for automatically removing a core or a work piece from a workpiece, Japanese Patent Application Laid-Open No. 1-246021 discloses a pipe electrode changing device, and Japanese Patent Application Laid-Open No. 1-1193125 discloses an unloading device. A processing machine equipped with the same is disclosed.

In addition, a thin hole electric discharge machine is disclosed in Japanese Patent Application Laid-Open No. 1-246021,
There are those disclosed in Japanese Utility Model Laid-Open No. 1-143321 and Japanese Utility Model Laid-Open No. 1-143321.

Further, the FM of the wire electric discharge machine disclosed in Japanese Patent Application Laid-Open No. 62-120960 has a circular work moving station in the center, a wire cut electric discharge station, a die sinking electric discharge station, a laser Stations, a discharge coating station, and a water jet processing station. When processing by FMS, the optimum processing station is selected first, and a series of operations are performed by a program input to a computer of a control device that controls the entire FMS collectively.

[Problems to be solved by the invention]

However, none of the above-mentioned conventional electric discharge machines automatically sets and mounts a workpiece on an XY table of the electric discharge machine, which is an obstacle to fully automatic electric discharge machines. Various types of processing machines such as wire electric discharge machines, small hole electric discharge machines, die sinking electric discharge machines, etc. are arranged, and workpieces are machined from stocking places such as racks for accommodating workpieces. The process of automatically loading and setting the workpiece, processing the workpiece, and unloading the workpiece from the processing machine is fully automated. It is desired to carry out continuously.

In addition, the above-mentioned FMS has a limit on the number of workpieces that can be mounted on the circular station, and in order to prepare a large number of workpieces, the diameter of the circular station becomes large, and the exclusive floor of the equipment itself for FMS is used. There is a loss of area,
In addition, since the processing times of various processing machines are different, a stroke waiting time occurs. Also, when there is a processing machine having a sufficient processing time, a time loss occurs in mounting a workpiece on the processing machine. There is a problem that the cycle efficiency decreases.
In particular, it has no technical idea of automatically and accurately positioning a workpiece with respect to a processing machine.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and to convert a pallet in which a workpiece is set in advance into various types of machining machines (hereinafter referred to as wire electric discharge machines, small hole electric discharge machines, die-sinking small hole electric discharge machines, etc.). , EDM), when transferring and loading / unloading with a stacker crane that reciprocates along the traveling system between a group of processing machines equipped with a large number of processing machines and racks, etc. A setup and indexing device for loading and unloading to and from a workpiece, a rod rust treatment device for performing rust-prevention treatment on a workpiece, and a fluid for removing deposits such as machining fluid, foreign matter, and dust attached to the surface of the workpiece Positioning a work which can be used in common through each of a spraying device, an intermediate transfer device for reciprocating between the stacker crane and the processing machine group and transferring the work while maintaining the positioning state. Transported in a state, An object of the present invention is to provide a pallet in which a workpiece is set in advance for carrying in and out.

This pallet is a flexible manufacturing system (hereinafter referred to as “the following”) in a group of processing machines that can fully automate various types of processing on workpieces and can perform various types of processing continuously and unattended on workpieces day and night. , FMS).

[Means for solving the problem]

The present invention is configured as follows to achieve the above object. That is, according to the present invention, the center portion of the pallet body is cut out wider than the processing area of each processing machine, and a cutout hole in which a workpiece can be arranged with respect to the processing area, and a predetermined position on a processing table of the processing machine. A reference means provided on the pallet main body which matches the processing reference means of the processing table provided on the processing machine for setting; a position predetermined by the reference means for setting the workpiece at a predetermined position; The pallet main body engaged with the fixing means provided on the pallet main body outside the processing area of the processing machine, and the locking means of the carry-in / out moving device reciprocating between the processing machine and the pallet carry-in / out station. Wherein the reference means provided on the pallet body is constituted by reference metal fittings provided on the front end face and the side end face of the pallet body. Regarding pallets that can be used for MS.

The fixing means includes a workpiece holder fitted and fixed in the cutout hole, a workpiece setting jig attached to the workpiece holder, and a clamp provided on the workpiece setting jig for fixing the workpiece. The locking means provided on the pallet main body is a concave portion formed in the pallet main body, and the pin serving as the locking means of the carrying-in / out moving device is engaged with the concave portion.

The carrying-in / out moving device includes a stacker crane that reciprocates from a rack having a plurality of shelves along a traveling path provided along each of the processing machine groups, and reciprocates between the stacker crane and each of the processing machines. And each intermediate transfer device.

The pallet loading / unloading station includes a rack having a plurality of shelves having a pallet loading / unloading opening, and a pallet mounting table for loading and positioning the pallet body for positioning the pallet body in and out of a stacker crane. A set-up indexing device, a rust preventive device provided in a pallet running system for performing rust preventive treatment on the workpiece, or the pallet running to remove a deposit attached to the surface of the workpiece by spraying a fluid. It corresponds to a fluid spraying device provided in the system.

This pallet includes a plurality of processing machines, a rack having a plurality of shelves for shrinking the pallet body, a processing station for performing a process such as rust prevention on the workpiece, and a loading / unloading station for the pallet body. The pallet body, on which the workpiece is set, is transferred to the respective processing machines while maintaining the positioning state by the pallet transfer device that reciprocates the workpiece, and the workpiece on the pallet body is automatically transferred by the respective processing machines. Applied to FMS for electric discharge machining.

[Action]

Since the pallets that can be used for this FMS are configured as described above, the pallets can be accurately and quickly set with respect to the processing machine. Further, since the fixing means for setting the workpiece at a predetermined position is provided on the pallet main body at a position predetermined by the reference means and outside the processing area of the processing machine, the type and size of the workpiece may vary. Accordingly, the workpiece can be accurately set at a predetermined position on the pallet.

Further, the pallet body has locking means for engaging with a locking means having a loading / unloading moving device such as a stacker crane and an intermediate transfer device which reciprocate with the pallet loading / unloading station. The pallet can be set accurately, quickly, and unattended by the loading / unloading moving device. Therefore, the pallet is carried into the processing machine by the stacker crane and the intermediate transfer device, and the workpiece can be automatically set at a predetermined position on the processing table of the processing machine quickly, unmannedly and automatically. After the processing of the workpiece, the workpiece can be automatically and unmannedly unloaded from the processing machine by the intermediate transfer device and then by the stacker crane from the processing machine group.

〔Example〕

Hereinafter, an embodiment of an FMS that can use a pallet according to the present invention will be described with reference to the drawings. In this embodiment of the FMS, the machine group is applied to a group of electric discharge machines such as a wire electric discharge machine, a small hole electric discharge machine, and a die sinking electric discharge machine. The present invention is not limited to this, and can be applied to processing machines such as a laser processing machine for processing a workpiece and a water jet processing machine. The processing tank device includes a processing tank for storing the processing liquid, a processing tank cover device for preventing the scattering of the processing liquid and processing chips, a guard for safety, and the like. In addition, the workpiece here means not only the workpiece, but also
It refers to a workpiece after processing, and the processing machine itself can perform not only processing but also assembly and final finishing processing.

Referring to FIGS. 1 and 2, an outline of an embodiment of an FMS that can use a pallet according to the present invention will be described. FMS
Has a plurality of shelves 19 for accommodating a pallet P in which a workpiece W is set at a predetermined position, and a group of machining machines in which a wire electric discharge machine 1, a small hole electric discharge machine 2 and a die sinking electric discharge machine 3 are respectively installed. And a stacker crane 6 reciprocating along the traveling path 5 and an intermediate transfer device 7 reciprocating between the stacker crane 6 and the processing machine group.
Further, the FMS has a setup indexing device 9 having a pallet mounting table 11 for mounting and positioning the pallet P, a rust prevention treatment device 10 for performing rust prevention treatment on the work W, and an FMS attached to the surface of the work W. It has a fluid spraying device 12 for removing deposits such as working fluid, foreign matter, dust and the like.

As a processing machine (EDM) equipped with many types of processing machines,
FIG. 1 shows one wire electric discharge machine, one small hole electric discharge machine 2, and one die sinking electric discharge machine 3. In addition, each processing machine has a filtering device 21 having a different function in each processing machine in order to filter and clean the working fluid used in the processing machine.

In addition, a control panel (1) for setup, indexing, and rust prevention treatment is used to control the system with a controller (not shown).
3, Inventory control machine 14, Relay board 15, Switch box 16, Processing machine
The control device 22 is provided for each of 1, 2, and 3. The control device 22 inputs and outputs detection information to and from the controller, and is controlled by the controller. The traveling path 5 of the stacker crane 6 has a stacker crane 6
A monorail 18 for reciprocating and a protective fence 17 for ensuring safety are provided.

Further, a controller (not shown) has information on what kind of work W is set in advance on the pallet P carried in / out through the setup / indexing device 9 and information on the pallet P carried in / out through the setup / indexing device 9. Information on the order of loading and unloading, information on pallets P stored in each shelf 19, information on loading and unloading to and from a processing machine, information on a workpiece W being processed, and the like are stored. Based on the above information, the controller inputs in advance information as to what kind of processing machine is to be used for the workpiece W and what kind of processing is to be performed on the workpiece W.

In the operation of FMS, for example, as a process from the planning schedule to the creation of the setup schedule,
It is configured as shown in FIG. First, a plan schedule is created in the host computer, and the next plan schedule is created in the allowance. The plan schedule created by the host computer is transmitted from the host computer to the control computer in the FMS. The plan schedule received by the control computer is displayed on a display or the like, and the plan is changed or added to the plan schedule. Next, for example, a unit schedule is once created from the planned schedule. Here, as a simulation, a simulation of the schedule on a daily basis was performed, and each of the processing machines 1, 2,
Create the load factor, processing machine-specific schedule, and setup schedule of 3, and create work instructions. After performing each of the above processes, the setup indexing device 9 starts the setup indexing operation.

Next, referring to FIG. 3, the pallet can be used.
Another example of FMS will be described. Compared with the above-mentioned embodiment of the FMS, the number of the wire electric discharge machines 1, the small hole electric discharge machines 2 and the die sinking electric discharge machines 3, the layout of the electric machines, and The system performs the same function except that the layout of the device is different. One small-hole electric discharge machine 2 for forming a predetermined start hole in the workpiece W with the pipe electrode PE is provided at a position facing the setup indexing device 9. On the other hand, a wire electric discharge machine 1 for machining a workpiece W into a predetermined machining shape by penetrating a wire electrode WE into a start hole formed in the workpiece W.
In the figure, five units are installed. In the figure, four die-sinking electric discharge machines 3 for processing a workpiece W with die-shaped engraving electrodes RE of various shapes such as rods are provided. That is, while the time required to machine a start hole in the workpiece W by the small-hole electric discharge machine 2 is short, the wire electric discharge machine 1
Therefore, it takes a long time to process the predetermined processing shape by penetrating the wire electrode WE into the start hole of the workpiece W.
Also, the time required for machining with the die sinking electric discharge machine 3 is not as long as that of the wire electric discharge machine 1, but takes some time. Therefore, by setting the number of units in accordance with the time required for processing the workpiece W by various types of processing machines, the cycle time from the time when the workpiece W is loaded and mounted on the processing machine to the time when the workpiece W is removed and unloaded is reduced. It is possible to shorten the process waiting time of the processing machine and improve the cycle efficiency.

Next, an embodiment of this pallet will be described with reference to FIGS.
This will be described with reference to FIG. 6 and FIG. FIG. 4 is a plan view showing one embodiment of the pallet, and FIG. 5 is a line VV of FIG.
6 and FIG. 6 is a sectional view taken along line VI-VI in FIG.

This pallet can be shared for each device in the above FMS. In the FMS, the pallet P is used for setting various workpieces W at predetermined positions in advance, and is made of a material such as stainless steel having high mechanical rigidity, conductivity and rust resistance. A mounting reference means such as a reference metal fitting having a common reference surface for the processing machines 1, 2, and 3 and a locking means such as a concave portion are provided.

The pallet P has a cutout hole 24 in which the center of the pallet body 8 is cut out wider than the processing area of each processing machine and the workpiece W can be arranged with respect to the processing area in order to run the wire electrode WE. I have. Cutout hole in pallet body 8
A workpiece holder 25, which is a fixing means capable of setting the workpiece W at a predetermined position, is fitted to the workpiece 24. Workpiece holder 25
The workpiece holder 25 has various cutout holes 34 formed in the center thereof to match the shape of the workpiece W. In the cutout hole 34 of the workpiece holder 25, a workpiece setting jig 26 can be attached so as to be replaceable. Therefore, after fitting the workpiece W into the cutout hole 34 of the workpiece holder 25, the clamp 27 provided on the workpiece setting jig 26
The workpiece W can be fixed to the pallet P by tightening. The workpiece setting jig 26 is prepared in various shapes that match the shape of the workpiece W.

The mounting reference means provided on the pallet main body 8 of the pallet P is provided in a height direction, that is, a Z direction and a horizontal direction, that is, X direction, with respect to a reference surface provided on an X-Y table-shaped processing table of each of the processing machines 1, 2, 3. Functions to set the pallet P at a predetermined position in the pallet P direction and the Y direction. 8 can be composed of a reference metal fitting 29 provided on the front end face 29F and a reference metal fitting 30 provided on one side surface 30S. Each finishing surface 28 is formed parallel to each other and at the same height. Further, the reference metal fittings 29 and 30 are preferably made of a rust-resistant material such as ceramics and cemented carbide and have a high abrasion resistance, and are replaceably attached to the pallet body 8. Reference surface 29K of reference metal fitting 29 provided on front end face 29F and reference metal fitting 30 provided on one side surface 30S
Are orthogonal to each other, and each reference surface 29K, 30K and each finished surface 28 are orthogonal to each other. The rotation center axis of the through hole 24 is orthogonal to each of the finishing surfaces 28. For example, the pallet body front end face 29F of the pallet P on the side facing the wire electric discharge machine 1 is provided with a machining reference positioning means provided on the wire electric discharge machine 1 in order to set the pallet at a predetermined horizontal position on the machining table. A reference surface 29K is formed as reference means that matches a positioning stopper having a reference surface. The positioning stoppers provided for the processing machine groups 1, 2, and 3 are preferably made of a rust-resistant material such as ceramics and cemented carbide, and a material with high wear resistance. Replaceably mounted.

The locking means of the pallet P is a plurality of recesses formed on the back surface of the pallet body 8 of the pallet P. A plurality of (two in the figure) recesses 31 are engaged with a common locking pin provided on the fork of the stacker crane 6. Multiple (2 in the figure)
Is a pin hole, which is engaged with a common operation pin provided on the lifter of the intermediate transfer device 7. , 2,3 can be pushed or pulled out. The plurality of (two in the figure) recesses 32 are engaged with common locking pins provided in the setup indexing device 9, the rust prevention treatment device 10, and the intermediate transfer device 7.

Next, each device that can be used in each of the above examples of FMS that can use this pallet, ie, rack 4, setup indexing device 9, stacker crane 6, rust prevention treatment device 10, fluid spray device 12, intermediate transfer device 7, A machining table device of the wire electric discharge machine 1 and the small hole electric discharge machine 2, a work piece removing device 130 and a machining tank device 79 of the wire electric discharge machine 1, a pipe electrode exchanging device 2C of the small hole electric discharge machine 2, and Examples of the processing table device and the processing tank device 79K of the die sinking electric discharge machine 3 will be described.

The rack 4 provided in the FMS has a number of openings 20 through which the pallets P enter and exit along the longitudinal direction of the traveling path 5 of the stacker crane 6, and the pallets P or the workpieces W are accommodated in the openings 20. A number of shelves 19 for storing a preset pallet P are vertically arranged. The pallet P is stored in the shelf 19 by the operation of the stacker crane 6, or is taken out from the shelf 19 to the stacker crane 6. Rack 4
The rust prevention treatment device 10 and the fluid spraying device 12 are disposed in the appropriate opening 20. An upper rail 48 is attached to a frame protruding from the upper part of the rack 4 toward the traveling path 5 to guide the upper part of the stacker crane 6.

Further, as shown in FIGS. 7, 8 and 9, a setup indexing device 9 is provided on the FMS.
It is provided on 36. FIG. 7 is a plan view showing an example of a setup indexing device that can be used for the FMS, FIG. 8 is a front view of FIG. 7, and FIG. 9 is a front end side view of FIG.

In the setup station, as shown in FIG. 55, a setup schedule is created as a setup indexing operation, and setup for mounting the workpiece, ie, the workpiece W, on the pallet P is started. First, the stacker crane 6 is operated, an empty pallet P is discharged from the shelf 19 of the rack 4 to the setup station, and the workpiece W is mounted on the pallet P. When the mounting operation for setting the workpiece W on the pallet P at the predetermined position is completed, the stacker crane 6 is operated again and the pallet P on which the workpiece W is set is stored in the shelf 19 of the predetermined rack 4. Next, the pallet P on which the workpiece W is mounted is carried into predetermined processing machines 1, 2, and 3 by the operation of the stacker crane 6, and subjected to electric discharge machining. The pallet P to which the workpiece W on which the electric discharge machining has been completed is mounted on the shelf 19 of the predetermined rack 4 again by the operation of the stacker crane 6, or carried out to the setup station. At the setup station, a command for unloading is issued to the pallet P to which the workpiece W, which has been subjected to the electric discharge machining and stored in the predetermined shelf 19, is attached, and the stacker crane 6 is operated to carry out the pallet P to the setup station. I do. The work of removing the workpiece W from the pallet P is performed, and the removed workpiece W, that is, the product is carried out to a predetermined place.
Operates the stacker crane 6 again to operate the rack 19 of the rack 4.
Is stored in In the setup station, the above operation is repeated.

To accomplish each of the above operations, the setup indexing device 9
The workpiece W is mounted on the pallet P and positioned, and the pallet P can be carried in and out of the stacker crane 6 in a predetermined positioning state. The setup indexing device 9
In the figure, two units are provided. For example, one setup indexing device 9 can be configured only for carrying in the pallet P, and the other setup indexing device 9 can be configured only for carrying out the pallet P. The traveling cart 37 of the setup indexing device 9 is
Monorail of traveling path 5 on which stacker crane 6 travels
Moving device on rail 35 arranged at right angle to 18
It reciprocates by 41. In the drawing, the moving device 41 includes a motor, a speed reducer, a sprocket 41S fixed to the base 36, a chain 41C hanging on the sprocket 41S, and the like, but is not limited thereto, and may include a hydraulic cylinder or the like. On the traveling carriage 37, the pallet mounting base 11 is arranged rotatably about the rotation shaft 13 via a rotatable roller 40 arranged at the periphery. The pallet mounting table 11 includes a circular track member that rotates on the roller 40 and a support member on the track member, and can rotate 360 degrees on the roller 40. In addition, the pallet mounting table 11
Is configured to be able to rotate in four equal parts by manual indexing or automatic indexing, and the origin of the rotational motion is confirmed by a limit switch or the like. Also,
A stopper pin 39 is provided on the traveling carriage 37, and the stopper pin 39 is configured to be able to be locked by a locking member 42 provided on the pallet mounting table 11. Therefore, if the stopper pin 39 is locked to the locking member 42, the pallet mounting platform on the traveling carriage 37
11 rotation movements can be stopped. The pallet mounting table 11 is provided with a locking pin, which engages with the concave portion 32 formed in the pallet P, so that the positional relationship between the pallet mounting table 11 and the pallet P is at a predetermined position. Positioned. A pallet P is mounted on the pallet mounting table 11 via a receiving table 38. On the pallet P, a predetermined workpiece W is set at a predetermined position.

Since the setup indexing device 9 is configured as described above, the pallet P is mounted on the pallet mounting table 11 by a forklift or the like, and the pallet mounting table 11 is rotated on the traveling carriage 37 manually or by an appropriate rotating device. If you do, pallet loading table
11 is rotated to a predetermined position with respect to the traveling carriage 37, and the locking member 42 of the pallet mounting platform 11 is
The pallet mounting table 11 stops at a predetermined position of the traveling carriage 37. Next, the moving device 41 is driven to move the traveling carriage 37 to the traveling passage 5 side. Traveling trolley 37
When the stacker crane 6 moves along the traveling path 5 and comes to the setup station, the pallet P on the pallet mounting table 11 is carried in by the fork of the stacker crane 6.

The FMS has a stacker crane 6 that reciprocates on a monorail 18 in a travel path 5. The stacker crane 6
Since it has almost the same structure as the conventional one except for the structure of the fork, the description of the same points as the conventional ones, such as the traveling vehicle, the driving device of the traveling vehicle, and the hoisting device, is omitted.

Hereinafter, the stacker crane 6 will be described with reference to FIGS. 10 to 19. FIG. 10 is a schematic front view showing the entire stacker crane, FIG. 11 is a side view of FIG. 10, FIG. 12 is a perspective view showing the outline of the stacker crane, and FIG. 13 is a fork base mounted on the stacker crane. FIG. 14 is a front view showing the lower part of the stacker crane,
FIG. 15 is a front view showing the upper part of the stacker crane, FIG. 16 is a cross-sectional view showing the transmission mechanism of the fork device of the stacker crane, FIG. 17 is a front view of the fork device, and FIG. And FIG. 19 is an explanatory view showing a state in which the fork device is contracted.

As shown in FIGS. 10 and 11, the stacker crane 6
Is a traveling truck that reciprocates on a monorail 18 provided with stoppers 6S at both ends of the traveling passage 5 by driving of a traveling device 57.
44, mast 45, mast standing in the front-rear direction of the traveling vehicle 44
An upper saddle 46 spans both upper ends of the 45 and a hoisting device 47 attached to the mast 45. An upper saddle 46 of the stacker crane 6 is provided on an upper rail 48 provided on the rack 4.
Guide rollers 49 provided on the front, rear, left and right sides of the upper saddle 46 are guided to prevent runout (FIG. 12).

As shown in FIGS. 13 and 15, the stacker crane 6
A fork device 50 is provided on the traveling carriage 44 to extend and contract on the left and right sides of the traveling passage 5 and to place the pallet P thereon. The fork device 50 is disposed on a fork base 51, and a carriage 52 is provided on the fork base 51 in the up-and-down direction. Guide roller at the top of the carriage 52
55 are rotatably mounted, and chains 54 are hung on guide rollers 55, respectively. 12 and 13
As shown in the figure, a guide roller is located above the carriage 52.
56 is rotatably mounted, and the guide roller 56 is a mast.
Guided on 45, the carriage 52 is prevented from swinging due to the vertical movement of the carriage 52. The chain 54 includes a hoisting device 47
, And one end is attached to the upper saddle 46 and guided by a guide roller 53 attached to the upper saddle 46. When the chain 54 is hoisted or unwound by the operation of the hoisting device 47, the carriage 52 moves up and down,
The fork device 50 on the fork base 51 moves up and down.

Next, the fork device 50 will be described with reference to FIGS. FIG. 16 is an explanatory view schematically showing a fork device and a driving device thereof, FIG. 17 is a sectional view showing details of the fork device, FIG. 18 is an explanatory diagram showing an extended state of the fork device,
FIG. 19 is an explanatory view showing a contracted state of the fork device.

The fork device 50 is configured to be extendable and retractable to carry the pallet P in and out. The fork device 50 includes a base fork 58 fixed to a fork base 51, an intermediate fork 59 slidable on the base fork 58, a distal fork 60 slidable on the intermediate fork, and an intermediate fork 59 and a distal fork.
And a driving device 63 that allows the device 60 to slide freely. In the fork device 50, in particular, a locking pin 67A and a support pin 67B are provided at both end portions of the tip fork 60. Lock pin
67A engages with the recess 31 formed in the pallet P,
The support pins 67B support the lower surface of the pallet and maintain the pallet P in a horizontal state. When the locking pin 67A of the tip fork 60 engages with the concave portion 31 of the pallet P, the pallet P
Can be accurately and reliably positioned on the tip fork 60 of the stacker crane 6. When the fork device 50 in the stacker crane 6 moves up and down and expands and contracts, the pallet P
Can be accurately and securely positioned without moving on the tip fork 60, and can be moved to a predetermined position together with the tip fork 60.

In addition, the proximal end fork 58 includes a forward side chain receiving member.
62F and the retreat-side chain receiving member 62R are fixed respectively. The forward side chain 6 is attached to the forward side chain receiving member 62F.
One end of 4F and one end of the retreat-side chain 64R are fixed to the retreat-side chain receiving member 62R. Forward chain 6
4F is the forward sprocket provided at the tip of the intermediate fork 59
The other end of the forward side chain 64F is fixed to the proximal end 66F of the distal end fork 60. The retreating chain 64R is hung on a retreating sprocket 65R provided at the tip of the intermediate fork 59, and the other end of the retreating chain 64R is fixed to the tip end 66R of the tip fork 60. The driving device 63 rotationally drives a pinion 70 rotatably attached to the fork base 51 through a transmission 71. A rack 61 is fixed to the lower surface of the intermediate fork 59 so as to extend in the longitudinal direction. The rack 61 meshes with a pinion 70 attached to the fork base 51. Intermediate fork 59
Are formed on both sides thereof. A guide roller 68 is rotatably mounted on the distal fork 60, and a guide roller 69 is rotatably mounted on the proximal fork 58. Since the guide roller 68 is loosely fitted in the guide groove 72 and guides the guide roller 68 in the guide groove 72, the tip fork 60 smoothly expands and contracts with respect to the intermediate fork 59. Further, since the guide roller 69 is loosely fitted in the guide groove 73 and guides the guide roller 69 in the guide groove 73, the intermediate fork 59 smoothly expands and contracts with respect to the proximal end fork 58.

The fork device 50 operates as follows. As shown in FIG. 18, when the tip fork 60 of the fork device 50 is extended, the driving device 63 is driven to rotate in one direction,
The pinion 70 is rotated in the forward direction through the transmission 71. The rotation of the pinion 70 moves the rack 61 to the longitudinally forward side. When the rack 61 moves to the longitudinal advance side, the intermediate fork 59 moves to the advance side, that is, the proximal fork.
Move to the side that extends for 58. The extension of the intermediate fork 59 is a sprocket 65F attached to the intermediate fork 59
Is rotated by the chain 64F, so that the distance between the forward chain receiving member 62F and the sprocket 65F is increased, and the distance between the sprocket 65F and the proximal end 66F is reduced. Accordingly, the tip fork 60 moves toward the forward side, that is, the side extending from the intermediate fork 59. Therefore, the fork device 50 extends the tip fork 60.

As shown in FIG. 19, when the tip fork 60 of the fork device 50 is contracted, the driving device 63 is driven to rotate in the opposite direction to the above, and the pinion 70 is moved through the transmission 71.
Is rotated in the backward direction. The rotational movement of the pinion 70 moves the rack 61 to the retreating side in the longitudinal direction. When the rack 61 moves to the retreating side in the longitudinal direction, the intermediate fork 59 moves to the retreating side, that is, the retreating side with respect to the base end fork 58. The retracting of the intermediate fork 59 causes the sprocket 65R attached to the intermediate fork 59 to rotate by the chain 64R.
And the distance between the sprocket 65R and the
The distance between 5R and the proximal end 66R is reduced. Therefore, the tip fork 60 moves to the retreat side, that is, the retraction side with respect to the intermediate fork 59, and the fork device 50 contracts the tip fork 60.

If the stacker crane 6 is provided with a fork device 50 that expands and contracts on one side of the travel path 5 and a fork device 50 that expands and contracts on the other side, the stacker crane 6 And a fork device 50 capable of extending and retracting. Alternatively, for the stacker crane 6, instead of providing the two fork devices 50 that extend and retract, a fork device that rotates on a fork base 51 is provided so that one fork device is provided.
At 50, the fork device can be oriented in the desired rotation as well as in both directions.

Therefore, the stacker crane 6 moves the fork device 50 up and down by the hoisting device 47 and has the fork device 50 that expands and contracts in the left-right direction of the traveling passage 5. If the tip fork 60 is slightly lifted up below the pallet P existing in
The locking pin 67A engages the tip fork 60 at 31 and
The lower surface of the pallet P is placed on the support pins 67B. If the tip fork 60 is contracted in this state, the pallet P can be positioned on the fork base 51. Next, the traveling unit 44 of the stacker crane 6 is driven by the traveling unit 57, and a predetermined position, for example, the setup indexing unit 9, and each intermediate transfer unit of the various processing machines 1, 2, and 3 is commanded by the controller.
7. Move to the rust preventive treatment device 10, the fluid spraying device 12 or the shelf 19 of the rack 4. Again, the fork device 50 operates to extend the tip fork 60 and move it to the position where the pallet P is placed. If the tip fork 60 is slightly moved downward when the tip fork 60 is extended to the mounting position of the pallet P, the locking pin 67A of the tip fork 60 engaged with the recess 31 of the pallet P is released. In this state, the tip fork 60 is retracted, the fork device 50 is contracted to the state shown in FIG. 19, and the stacker crane 6 is moved to the next destination.

Therefore, the stacker crane 6 is provided with the setup indexing device 9.
The function of carrying the pallet P received by the above into the rust prevention treatment device 10, the fluid spraying device 12, the rack 4 or the intermediate transfer device 7 of the various processing machines 1, 2, and 3. Alternatively, the stacker crane 6 can handle the pallets P unloaded from the various processing machines 1, 2, and 3.
The pallet P receives the pallet P from the intermediate delivery device 7 and carries it into the intermediate delivery device 7 of another processing machine or carries it out to the rack 4 or the setup / indexing device 9.

Further, in the FMS, the rust prevention treatment device 10 is installed at a rust prevention station provided in a pallet traveling system for performing a rust prevention treatment on the workpiece W. The rust prevention station may be installed anywhere on the pallet traveling system.
Two racks 4 are provided in two openings 20.

The rust prevention treatment apparatus 10 will be described with reference to FIG. 2, FIG. 20, and FIG. FIG. 20 is a front view of a rust prevention treatment device usable for FMS, and FIG. 21 is a side view of FIG.

The rust prevention device 10 has a pallet support member 23 that moves up and down while being guided by a support 4P installed in the rack 4. The pallet support member 23 maintains the pallet P from the stacker crane 6 in a predetermined positioning state. Pallet P to be able to
And locking means for engaging with the locking means provided in. A frame 4F is fixed to the upper part of the column 4P, and a driving device 10D for moving the pallet support member 23 up and down is set on the frame 4F. A tank 10T having an open top is disposed below the rack 4, and the tank 10T contains a solution for performing a rust prevention treatment. For example, one tank 10
T contains a rust tail solution for removing rust generated on the workpiece W, and the other tank 10T contains a rust preventing solution for preventing rust from being generated on the workpiece W. In order to promote the rust removing effect, it is preferable to provide, for example, means for applying ultrasonic vibration to the solution in the tank 10T containing the rust removing solution. Guide roller 23 of pallet support member 23
G is moved up and down by being guided by guide means provided on the support 4P of the rust prevention station.

Further, in the FMS, the fluid spraying device 12 sprays a fluid such as high-pressure air or high-temperature water to remove a deposit such as a machining fluid, foreign matter, dust, etc. attached to the surface of the workpiece W. It is provided in. The fluid spraying device 12
Although it may be provided at any place, in the figure, it is provided at the opening 20 of the rack 4 next to the rust prevention treatment device 10. The fluid spraying device 12 is provided with a means for blowing out a fluid such as high-pressure air or high-temperature water in order to clean the workpiece W carried into the FMS sufficiently to perform rust prevention treatment or electric discharge machining. Therefore, to prevent the fluid from scattering,
Preferably, a shutter means for closing the opening 20 is provided. The shutter means is controlled to operate according to a command from the controller. When the pallet P is carried into the fluid spraying device 12 from the stacker crane 6, the shutter means is operated to open the shutter, and the pallet P is placed on the pallet support member 25P provided in the fluid spraying device 12. . The pallet support member 25P is provided with locking means for engaging with locking means provided on the pallet P so that the pallet P can maintain a predetermined positioning state. When the pallet P is placed on the pallet support member 25P, the shutter closes, and then the fluid blowing nozzle 12N of the fluid spraying device 12
, A cleaning process is performed on the workpiece W. When the cleaning process for the workpiece W is completed, the shutter is opened again, and the pallet P is carried out of the pallet support member 25P by the stacker crane 6.

As described above, the rust prevention treatment device 10 and the fluid spray device 12
Are configured as an example, but their operation is, for example, the pallet P carried from the stacker crane 6 to the pallet support member 23 of the rust prevention treatment device 10 is operated by driving the driving device 10D to put the rust removing solution. Put into the tank 10T to remove the rust generated on the workpiece W. Next, the pallet P is moved by the stacker crane 6 from the rust prevention treatment device 10 to the fluid spraying device 12, and high-pressure air is sprayed on the surface of the workpiece W by the fluid spraying device 12 to blow off the rust removing solution attached to the surface. . Again, pallet P is transferred to the stacker crane 6
The fluid is sprayed from the fluid spraying device 12 to the rust-prevention treatment device 10, and the rust-prevention device 10 is put into the tank 10T containing the rust-prevention solution. In this case,
When the electric discharge machining is to be performed immediately after the rust preventive treatment on the workpiece W, the pallet P is moved from the rust preventive processing device 10 to the fluid spraying device 12 by the stacker crane 6 and is applied to the surface of the workpiece W by the fluid spraying device 12. The high-pressure air is blown to blow off the rust-preventive solution attached to the surface, and is conveyed by the stacker crane 6 to the intermediate transfer device 7 of the processing machine group. Alternatively, after the rust prevention treatment, the workpiece W which has been subjected to the rust prevention treatment
Is mounted on the shelf 19 of the rack 4 by the stacker crane 6, or is carried into the processing machines 1, 2, 3.

Next, wire electric discharge machine 1
Will be described with reference to FIGS. 22 to 31. FIG. 22 is a side view of a machining table portion of the wire electric discharge machine, FIG. 23 is a front view of FIG. 22, FIG. 24 is a plan view of the machining table portion of the wire electric discharge machine, and FIG. FIG. 26 is a partial plan view of the drawing, FIG. 26 is another side view of the working table portion of the wire electric discharge machine, FIG. 27 is a partial cross-sectional view of the clamping device, FIG.
FIG. 29 is a sectional view of FIG. 28, FIG. 30 is a plan view of the working tank cover device, and FIG. 31 is a 30th side view.

In the FMS, the wire electric discharge machine 1 includes an automatic wire electrode supply device, a wire electrode exchanging device, and a workpiece removing device for automatically removing a core, that is, a workpiece from a workpiece (FIG. 44). And FIG. 45). The wire electric discharge machine 1 has a mechanism for loading / unloading a pallet P on / from a processing table 75 and a pallet P
Since the fixing mechanism and the processing tank 76 have substantially the same configuration except for the difference, the parts different from the above will be particularly described.

The machining operation of the wire electric discharge machine 1 can be performed, for example, as shown in FIG. When the wire electric discharge machine 1 is ready for machining, the controller issues a signal to the NC program and issues a command to the stacker crane 6, and the stacker crane 6 sends the rack 4 to the wire electric discharge machine 1.
A pallet P set with a workpiece W whose machining of the start hole is accommodated in the shelf 19 of the above or a pallet P set with a workpiece W whose machining of the start hole has been completed by the small-hole electric discharge machine 2 is carried in. Do the work. When the pallet P is set in the wire electric discharge machine 1, the wire electric discharge machine 1 operates to perform electric discharge machining on the workpiece W into a predetermined machining shape. When the wire electric discharge machining is completed for the workpiece W, the pallet P on which the workpiece W is mounted is stored in a predetermined shelf 19 of the rack 4 by the stacker crane 6, or is carried out to a base or setup station 36. .

In the wire electric discharge machine 1, a workpiece W is preset on each pallet P, and the pallet P is intermediately transferred to a machining table 75 fixed to a jig base 74 which is electrically insulated on an XY table. It is automatically carried in and out by the device 7. The wire electric discharge machine 1 includes a filtering device 21 for filtering a machining fluid used during electric discharge machining, a pallet pressing device 77 for carrying the pallet P from the intermediate transfer device 7 to the working table 75, and pushing and setting the pallet P. It is a clamp device 78 provided on the processing table 75 for fixing the pallet P on the processing table 75, and an openable and closable door provided in a processing tank 76 mounted on the jig base 74 for preventing the scattering of the processing liquid. Slide cover
A processing tank cover device 79 with 80 is provided. A jig base 74 is fixed on the XY table in an electrically disconnected state.
A processing tank 76 is attached to the jig base 74, and a processing tank cover device 79 is provided in the processing tank 76. Also, on the upper surface of the jig base 74, a pair of processing tables 75 serving as position reference means is provided.
Has been fixed. The worktable 75 is provided with a clamp device 78 and a pallet pressing device 77 located on both sides of the jig base 74.

The machining table 75 in the wire electric discharge machine 1 is shown in FIGS.
This will be described with reference to FIG. The processing table 75 is fixed to a jig base 74 so as to extend in correspondence with both ends of the pallet P so as to support both ends of the pallet P. The mounting structure between the processing table 75 and the jig base 74 is not particularly limited. The processing table 75 is configured to move along with the horizontal movement of the table that is servo-moved by the NC device, and the positional relationship with respect to the traveling path on which the wire electrode WE travels is determined in advance. A guide roller 84A is provided at an entrance / exit portion of the processing table 75. A large number of guide rollers opposing both side surfaces of the pallet P are provided on the connection bars 82 on both sides mounted on the processing table 75 so as to be vertically movable with respect to the processing table 75 so as to guide the pallet P when the pallet P is pressed.
83 are rotatably fixed respectively. Guide roller
The reference numeral 83 functions to smoothly move the pallet P with respect to the processing table 75. That is, the connecting bar 82 is supported by the guides 86A provided at both ends and can move in the vertical direction by the operation of the cylinder 78C. At the upper end of the processing table 75, a reference metal fitting 81 as a positioning member is set. The upper surface of the reference fitting 81 functions as a reference surface 81S. When the pallet P is carried in and out, the connecting bar 82 moves upward by the operation of the cylinder 78C, and the upper surface of the guide roller 83 protrudes above the reference surface 81S of the reference fitting 81 to guide the pallet P when carrying in and out. .

Further, the respective reference surfaces 29K, 30K of the reference metal fittings 29, 30 attached to the pallet P are pressed against positioning stoppers 84, 87 provided on the working table 75 by pallet pressing devices 77, 77A. A pallet pressing device 77 for pressing the pallet P to a predetermined position in the forward direction of the processing table 75 is provided with a pallet P reference surface 29.
In order to press K against the positioning stopper 84 provided on the processing table 75, the processing table 75 has cylinders 86 provided on both sides thereof. The pallet pressing device 77A for pressing the pallet P to a predetermined position in the side surface direction of the processing table 75 presses the reference surface 30K on the side surface of the pallet P against a positioning stopper 87 provided on the processing table 75. Work table in direction
75 has a cylinder 88 provided. Cylinder 86,88
Is a double-acting cylinder in which fluid chambers are formed on both sides of a piston that reciprocates in a cylinder. When fluid is introduced into either side of the fluid chamber, the piston reciprocates in cylinders 86 and 88. Moving.

Position the front end of the pallet P with the positioning stopper 84 of the worktable 75.
In the pallet pressing device 77 that presses the cylinder 86, one end of the cylinder 86 is rotatably mounted on the worktable 75 at the pivot point 86P, and the pressing arm 91 is rotated on the end of the piston rod 90 fixed to the piston in the cylinder 86. It is attached so that it can rotate around the shaft 65. The pressing arm 91 is rotatably attached to a rotating shaft 66 attached to the processing table 75.
Therefore, when the piston rod 90 extends from the cylinder 86, as shown by the solid line in FIG.
Turns upward about the rotation shaft 66 and presses the end of the pallet P. On the other hand, the piston rod 90
When the pallet P is retracted into the cylinder 86, the end 94 of the pressing arm 91 pivots downward about the rotation shaft 66 as shown by a chain line in FIG.

In the pallet pressing device 77A for pressing the side end of the pallet P against the positioning stopper 87 of the processing table 75, the end of the piston rod 89 fixed to the piston in the cylinder 88 can contact one side of the pallet P. It is. Therefore, when the cylinder 88 operates and the piston rod 89 extends, the tip end surface of the piston rod 89 contacts the side surface of the pallet P,
The pallet P is pressed in the lateral direction, and the reference surface 30K of the reference metal fitting 30 provided on the side surface of the pallet P is brought into contact with the positioning stopper 87 provided on the processing table 75 to set the pallet P at a predetermined lateral position. it can.

When the finishing surface of the lower surface of the pallet P, that is, the reference surface 28 is brought into contact with the reference surface 81S of the reference metal fitting 81 of the processing table 75, and the pallet P is positioned on the processing table 75, the cylinder 78C is moved in the opposite direction to the above. By operating the connecting bar 82 downward, the upper surface of the guide roller 83 is lowered below the reference surface 81S of the reference fitting 81 so that the guide roller 83 does not hinder the positioning. Therefore, the finishing surface of the lower surface of the pallet P, that is, the reference surface 28
Comes into contact with the reference surface 81S of the reference metal fitting 81, and the pallet P is accurately and reliably positioned in the predetermined height direction with respect to the processing table 75.

The pallet R is fixed to the machining table 75 of the wire electric discharge machine 1 by the plurality of clamps 85 of the clamp device 78, and has edges on both sides pressed by the clamps 85. The clamping device 78 is shown in particular in FIGS. 23, 24, 26 and 27. The clamping device 78 is attached to the side of each processing table 75 via a bracket 78B, and has a function of fixing the pallet P on the processing table 75 at a position facing both sides of the pallet P. The clamping device 78 includes a cylinder 78C disposed on the side of the center of the connecting bar 82 and fixed to the processing table 75 by a bracket 78B, a piston rod 78R fixed to a piston 78P that moves up and down by the operation of the cylinder 78C, and a piston rod 78R. It has a clamp 85 attached to the upper end of 78R and located above the connecting bar 82.

The clamp device 78 is provided with a pallet fixing sensor and a pallet release sensor for detecting that the cylinder 78C has been operated to fix or release the pallet P on the processing table 75. The upper end of the piston rod 78R passes through a through hole 85H provided in the clamp 85, and a nut 85N is screwed into a thread formed on the upper end of the piston rod 78R to fix the clamp 78 to the piston rod 78R. When fluid is introduced into the cylinder 78C through the fluid passage, the piston 78P moves downward, the piston rod 78R moves downward, and the clamp 85 fixed to the piston rod 78R moves downward.
The downward movement of the clamp 85 presses the pallet P onto the processing table 75 and fixes the pallet P to the processing table 75. Moving the clamp 85 of the clamp device 78 upward and releasing the fixing of the pallet P to the worktable 75 can be achieved by operating the cylinder 78C in the reverse direction.

The processing tank cover device 79 is particularly suitable for use in FIGS. 28, 29 and 30.
This is shown in the figure and FIG.

The machining tank cover device 79 is an X-Y of the wire electric discharge machine 1.
It is arranged in a machining tank 76 attached to a jig base 74 on a table, and functions as a guard for preventing scattering of machining fluid, machining debris and the like when performing wire electric discharge machining of a workpiece W, or for safety. The processing tank cover device 79 includes an air cylinder 92,
A cover 93 attached to the processing tank 76, a manual opening / closing cover 94C arranged on the side of the cover 93 and pivotally attached to the cover 93, and a slide cover 80 slidable with respect to the cover 93 and constituting a carry-in / out port for the pallet P. It is composed of The processing tank cover device 79 includes an air cylinder 92 of an actuator that slides a slide cover 80 for opening and closing the entrance of the pallet P on which the workpiece W is set. Air cylinder
Reference numeral 92 denotes a double-acting cylinder made of a non-magnetic material, in which a piston 95 made of a magnetic material is arranged. The piston 95 reciprocates in the air cylinder 92 when air is supplied to either side in the air cylinder 92. Sliding cover 80 of processing tank cover device 79
Is located on the surface of the intermediate transfer device 7 facing the pallet carry-in / out side. The reciprocating mechanism of the slide cover 80
An air cylinder 92 and a piston 95 reciprocating in the air cylinder 92 are disposed below the processing tank cover device 79. The reciprocating movement of the piston 95 is caused by one of the air passages 97 provided at both ends of the air cylinder 92. This is achieved by supplying air to the A cover guide 96 is fixed to the cover 93, and a guide roller 98 is attached to the cover guide 96. A guide rail 99 is fixed to the slide cover 80, and a guide roller 98 is fitted to the guide rail 99. A bracket 80B is fixed to the lower end of the slide cover 80, and a bracket 8 made of a magnet is attached to the end of the bracket 80B.
0M is fixed. Bracket 80B is air cylinder 9
The piston 95 made of a magnetic material reciprocating in the inside 2 is attracted and reciprocates along the outer surface of the air cylinder 92. Therefore, when the piston 95 reciprocates in the cylinder, the bracket 80M holding the piston 95 moves according to the movement of the piston 95. If the bracket 80M reciprocates, the bracket 80B reciprocates. When the bracket 80B reciprocates, the slide cover 80 reciprocates while being guided by the guide rollers 98 provided on the cover guide 96.

In order to detect the open / closed state of the slide cover 80, the processing tank cover device 79 includes an open end sensor 80F for detecting the open state of the slide cover 80 and a closed end sensor 80E for detecting the closed state of the slide cover 80. The open end sensor 80F and the closed end sensor 80E can be provided for the cover 93, the slide cover 80, or the air cylinder 92. When the open end sensor 80F detects that the slide cover 80 is in the open state, the controller receives the detection signal and moves the pallet P located at the intermediate transfer device 7 onto the working table 75 of the wire electric discharge machine 1. Control is performed, or control is performed to move the pallet P on the processing table 75 from the processing table 75 to the intermediate transfer device 7. Further, the closed state of the slide cover 80 is detected by the closed end sensor 80E, and the controller receives the detection signal and controls the wire electric discharge machine 1 to operate.

In particular, the wire electric discharge machine 1 includes a reference surface 81S, which is an upper surface of a reference metal fitting 81 which is a positioning member disposed on a machining table 75.
The reference surface 28, which is the finished surface formed on the back surface of the pallet P,
Reference surface 29F of reference metal fitting 29 arranged on the front end surface of pallet P,
The reference surface 30K of the reference surface 30 arranged on the side end surface of the pallet P, and the positioning stoppers or reference fittings 84, 8 provided on the processing table 75.
A reference surface cleaning device is provided to clean the reference surfaces 84S and 87S formed on the reference numeral 7. The reference surface cleaning device can be composed of a water spray nozzle for spraying water to the cleaning surface and an air spray nozzle for blowing air, and eliminates fine machining debris generated during wire electric discharge machining by the wire electric discharge machine 1. I do. Accordingly, since each reference surface can be cleaned at every setting of the pallet P or at every predetermined period, the setting of the pallet P on the processing table 75 is always reliable and does not adversely affect the processing accuracy.

The device for positioning the pallet P on the worktable 75 can be operated as follows. That is, the slide cover 80 of the machining tank cover device 79 provided in the wire electric discharge machine 1 is opened, the cylinder 78C of the clamp device 78 is operated to raise the clamp 85, and the cylinder 86A is operated to connect the connecting bar 82. To raise. The rise of the connecting bar 82 raises the guide roller 83. In this state, the pallet P is sent onto the processing table 75 by the lifter 100 of the intermediate transfer device 7. At this time, it is preferable that the upper surface level of the guide roller 83 is the same as the upper surface level of each roller provided in the lifter 100 of the intermediate transfer device 7 described later. Thereafter, the push-in / pull-out arm 101 of the lifter 100 operates to move forward and push the pallet P into the processing table 75. Next, the lifter 100 of the intermediate transfer device 7 is slightly lowered, and the operating pin 170 provided on the push-in / draw-out arm 101 is disengaged from the concave portion 33 formed on the pallet P.
Next, the push-in / draw-out arm 101 is retracted. At this time, the solenoid valve of the cylinder 86A is set to the neutral position by the command of the controller, and descends by the weight of the pallet P.
The connecting bar 82 and the guide roller 83 descend by the load of the pallet P. As a result, the lower surface of the pallet P is placed in a state of contact with the reference surface 81S of the reference metal fitting 81 of the processing table 75.

In this state, the pallet pressing device 77 is operated to rotate the pressing arm 91 about the rotation shaft 66, and the rear end portion of the pallet P is pressed by the pressing arm 91 as shown by the solid line in FIG. Press the base 74 against the reference surface 84S of the positioning stopper 84. The front end surface of the pallet P is set by the action of the pallet pressing device 77, and then the cylinder 88 of the pallet pressing device 77A is operated to push the side end surface of the pallet P sideways with the piston rod 89, so that the side end surface of the pallet P Is pressed against the reference surface 30K of the reference metal fitting 30 provided on the processing table 75, and the side end of the pallet P is set on the processing table 75. After setting the position of the pallet P on the worktable 75, the clamping device 78 is operated to press the pallet P, and the reference surface 28 on the lower surface of the pallet P is pressed against the reference surface 81S of the reference fitting 81 of the worktable 75. Contact and fix the pallet P on the worktable 75, the pallet P
Can be set at a predetermined processing position of the processing table 75 which is determined in advance. In each of these operation steps, each detection signal of each sensor is input to the controller, and based on the input signal, the controller issues an operation signal of the next step to operate a predetermined device. Next, the processing table
When the position setting of the pallet P to 75 is completed, the slide cover 80 of the processing tank cover device 79 slides to close the loading / unloading port of the pallet P.

In this state, the wire electric discharge machine 1 is operated, and after the wire is automatically inserted into the workpiece W preset on the pallet P, the wire electric discharge machine is started. The electric discharge machining is performed on the workpiece W, a predetermined machining shape is machined on the workpiece W, and when the electric discharge machining is completed, the automatic wire feeder cuts the wire, and then the machining tank cover device 79 operates. The slide cover 80 slides and the pallet P
To open the loading / unloading port. Next, the pallet pressing device 77 is operated in the reverse direction to retreat the pressing arm 91 as shown by the dashed line in FIG. Further, the clamp device 78 is operated to raise the clamp 85,
Raise the guide roller 83 to move the pallet P to the guide roller.
Make it mounted on 83. Next, the intermediate transfer device 7
Operates to move the pallet P from the processing table 75 to the intermediate transfer device 7.

Further, in the wire electric discharge machine 1, when wire electric discharge machining is performed on the workpiece W, machining chips separated from the workpiece W or products processed into a machining shape are generated. If these pieces are not automatically removed by electric discharge machining in the wire electric discharge machine 1, subsequent electric discharge machining cannot be performed. Here, an example of the work piece removing apparatus will be described with reference to FIGS. 44 and 45.
FIG. 44 is a schematic front view showing an example of a workpiece removing device attached to a wire electric discharge machine, and FIG. 45 is a side view of FIG.

The work piece removing device 130 is fixed to the head 1H of the wire electric discharge machine 1 by an upper mounting member 131 and a lower mounting member 132. A dog 133 that guides the ball screw rod 135 that moves up and down is attached to the upper mounting member 131, and the ball screw rod 135 is formed with a ball spline groove 141 and a screw 142. Lower mounting member 13
2 is provided with a sliding member 62 that is engaged with the ball spline groove 141 and is fixed in the rotational direction and slides in the vertical direction. A gear 145 is fixed to the sliding member 62. The gear 145 is meshed with a gear 146 that meshes with the gear 145 and turns 270 degrees around the outer periphery of the gear 145. Gear 146
Is fixed to a rotation shaft 148 rotatably supported by a support member 147 attached to the lower attachment member 132. The rotation of the rotating shaft 148 is performed by the operation of the servomotor 137 as the second servomotor. Therefore, when the rotation shaft 148 is rotated by the servomotor 137, the gear 146 meshes with the gear 145 and rotates around the gear 145, or the rotation of the gear 146 rotates the gear 145 to rotate the ball screw rod 135. .

A ball screw 143 that meshes with the screw 142 is attached to the lower attachment member 132. Nut rotation support holder attached to lower attachment member 132 and fixed to sliding member 62
A nut 149 is fixed to 53, and a worm wheel 144 is fixed to the nut 149 by meshing with a screw 141. The worm wheel 144 is attached to the first mounting member 132
It rotates by the operation of the servomotor 136 which is a servomotor. Therefore, when the worm wheel 144 is rotated by the operation of the servo motor 136, the sliding member 62 moves the ball screw rod 135 up and down. Servo motor 13
When the gear 6, 137 operates and the gear 145 and the worm wheel 144 rotate in synchronization, the rotational movements of the gear 145 and the worm wheel 144 cancel each other to stop, and only the ball screw rod 135 rotates.

Further, an electromagnetic holder case 138 is attached to the lower end of the ball screw rod 135. Electromagnetic holder case 1
The ball screw 150 is attached to 38, and the ball screw 150
A ball screw rod 139, which is a second ball screw rod provided with a screw 151 that meshes with the rod, penetrates. A ball spline 152 is formed on the ball screw rod 139. The electromagnetic holder case 138 is provided with a servomotor 153 as a third servomotor for rotating a worm wheel attached to the ball screw 150. Therefore, when the servo motor 153 operates and the worm wheel of the ball screw 159 rotates, the ball screw rod 139 reciprocates in the horizontal direction with respect to the electromagnetic holder case 138. An electromagnetic holder 140 is attached to the tip of the ball screw rod 139, and a magnet such as an electromagnet is attached to the electromagnetic holder 140.

Since the work piece removing device 130 is configured as described above, the ball screw rod 13 that moves up and down and rotates.
The ball screw rod 139 attached to the lower end of 5 can move up and down and rotate integrally with the ball screw rod 135, and the ball screw rod 139 itself can move horizontally with respect to the ball screw rod 135. Therefore, the electromagnetic holder 140 attached to the tip of the ball screw rod 139 can move in a three-dimensional space.

Therefore, if the electromagnet attached to the electromagnetic holder 140 of the workpiece removing device 130 is configured to protrude from the workpiece removing device 130, the electromagnet is positioned on the pallet P of the wire electric discharge machine 1. It can come into contact with the upper surface of the workpiece W. Therefore, immediately before the work piece is separated from the workpiece W by the command of the controller, the work piece removal device 130 is operated to bring the electromagnet into contact with the work piece and attract the work piece. Without dropping, the workpiece adsorbed by the electromagnet 140 can be moved upward to be stored in a predetermined workpiece storage location, and the workpiece separated from the workpiece W does not damage the processing surface. The work piece can be eliminated.

Next, the small hole electric discharge machine 2 will be described with reference to FIGS. FIG. 32 is a plan view of a small hole electric discharge machine, FIG. 33 is a side view of a pipe electrode changing device, and FIG. 34 is a line II in FIG.
35 is a sectional view taken along line IX-IIIX, FIG. 35 is a plan view of the index table, and FIG. 36 is a sectional view taken along line BB in FIG.

Compared to the wire electric discharge machine 1, the small hole electric discharge machine 2 uses a pipe electrode PE to form a small hole, a small hole, and a wire electrode WE for wire electric discharge machining on a work W previously set on a pallet P.
A start hole is made to penetrate through. As a device for setting the position of the pallet P on the worktable and a work tank cover device, the same device as the wire electric discharge machine 1 can be used. Therefore, the description of the configuration and operation of the above-described apparatus will not be repeated here, and the apparatus for replacing the pipe electrode PE and the apparatus for setting the pipe electrode PE will be described. FMS
As the pipe electrode exchange apparatus, the one disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 1-246021 can be used, but the pipe electrode exchange apparatus described below is preferable.

The machining operation of the small hole electric discharge machine 2 can be performed, for example, as shown in FIG. When the preparation for machining of the small hole electric discharge machine 2 is completed, the controller issues a signal to the NC program and also issues a command to the stacker crane 6, and the stacker crane 6 sends the signal to the small hole electric discharge machine 2 to the rack 19 of the rack 4.
In order to machine a start hole, a pallet P mounted with a workpiece W having a predetermined machining shape by wire electric discharge machining accommodated in a small hole electric discharge machine 2 is carried out.
When the pallet P is set in the small-hole electric discharge machine 2, the small-hole electric discharge machine 2 operates to perform electric discharge machining of a fine hole in a predetermined position on the workpiece W. When the electric discharge machining of the start hole is completed for the work W, the pallet P on which the work W is mounted is moved by the stacker crane 6 to a predetermined shelf of the rack 4.
19 or carried into the wire electric discharge machine 1.

The small hole electric discharge machine 2 includes a pipe electrode exchange device 2C. The pipe electrode exchange device 2C can use a conventionally used pipe electrode PE. In order to determine a large number of pipe electrodes PE, an index table 102 and a pipe electrode PE having one indexing notch 102C are used. It has a chuck pallet 105 for support. Pallet for chuck 1
05 is configured to be replaceable for the index table 102. On the chuck pallet 105, a support hole 103 for supporting the chuck portion PEC of the pipe electrode PE is formed on the concentric circle at an equal distance in the circumferential direction from the rotation center point.
In the support hole 103, a notch groove 104 is opened radially outward to allow the pipe electrode PE to enter and exit. The notch 104 in the support hole 103 is located at the center of the
A distribution state is formed from the line connecting the center points of 103. The diameter of the support hole 103 is formed larger than the outer diameter of the cap nut PEN of the pipe electrode PE. Pallets for chucks
A mounting reference hole 108 for attaching the chuck pallet 105 to the index table 102 at the center thereof, and equally divided fastening holes 106 for fastening the chuck pallet 105 to the index table 102 around the mounting reference hole 108 (FIG. 4), and an index origin confirmation hole 107 for confirming the index origin of the pipe electrode PE. One fastening hole 106 and an index origin confirmation hole 107 are located on a line connecting the center point of the chuck pallet 105 and the center point of the support hole 103. The index origin confirmation hole 107 is configured so that the index origin is confirmed by coding the index confirmation notch 102C of the index table 102.

The pipe electrode exchanging device 2C has an indexing mechanism for indexing the chuck pallet 105. The indexing mechanism includes a stepping motor 109 and a reduction gear transmission 110 incorporated between the stepping motor 109 and the chuck pallet 105. Further, the small-hole electric discharge machine 2 has a main shaft 11
A mechanism for inserting an electrode holder for a pipe electrode PE supported by a support hole 103 of a chuck pallet 105 into a support hole 10;
There is a mechanism for moving from the standby position of No. 3 to the center position of the main shaft 111 of the small hole electric discharge machine 2. The center of the main shaft 111 is a point that is the center of the pipe electrode PE and the center during processing. The above-mentioned insertion mechanism includes a vertically moving cylinder 1 for vertically moving a pallet 105 for chuck provided in a pipe electrode exchanging device 2C.
Consists of twelve. The moving mechanism for moving the chuck pallet 105 to the center position of the spindle 111 is a front-rear moving cylinder 11.
Consists of three. This forward / backward moving cylinder 113 moves the indexed pipe electrode PE to the center position of the main shaft 111 at the forward end,
Further, it has a function of retracting the chuck pallet 105 to the standby position at the retracted end. In addition, pipe electrode exchange device 2C
Has a means for checking the index origin of the chuck pallet 105 and a means for checking whether or not the pipe electrode PE exists in the support hole 103. The index origin check means is constituted by a photoelectric switch 114 attached to a frame 116 supporting a stepping motor 109. The presence / absence confirming means is constituted by a photoelectric switch 115 attached to the frame 116 supporting the stepping motor 109 and detecting whether or not the pipe electrode PE is supported in the support hole 103 facing the center of the main shaft 111. .

The pipe electrode exchange device 2C can operate as follows. When the pipe electrode PE is attached to the center 111 of the main shaft of the small hole electric discharge machine 2, the stepping motor 109 is operated to rotate the chuck pallet 105, and the pipe electrode PE is turned by the photoelectric switch 114 as indexing origin confirmation means. Support hole 103 to support
Find out. Next, a photoelectric switch,
It is confirmed by 115 that the pipe electrode PE is supported in the support hole 103 facing the spindle center 111. If the pipe electrode PE is present in the support hole 103, the pipe electrode PE is moved to the center of the spindle by the operation of the back and forth moving cylinder 113. Move to position 111. Since the pipe electrode holder is provided on the main shaft of the small hole electric discharge machine 2, the vertical cylinder 112 is operated to raise the indexed pipe electrode PE of the chuck pallet 105,
It is inserted into the pipe electrode holder 2H of the main shaft 111. If the pipe electrode PE is inserted into the pipe electrode holder 2H, the pipe electrode PE is automatically held in the pipe electrode holder 2H. Pipe electrode
After PE is inserted and fixed in the pipe electrode holder 2H, the vertical cylinder 112 is operated to lower the pallet 105 for chucking.
Next, the chuck pallet 105 is retracted to the standby position of the pipe electrode exchanging device 2C by operating the forward and backward moving cylinder 113.

When the pipe electrode PE is used to machine a start hole for the workpiece W and the pipe electrode PE is consumed, when the consumed pipe electrode PE is removed from the main shaft 111 of the small hole electric discharge machine 2, a chuck pallet is used. The presence of the pipe electrode PE in the support hole 103 of 105 is confirmed by the photoelectric switch 115 as a means for confirming the presence or absence, and the support hole 103 is moved to the center of the main shaft 111 so that the center of the support hole 103 and the center of the main shaft 111 are Are received, and the pipe electrode PE consumed in the support hole 103 is received. At this time,
The pipe electrode PE remaining in the electrode holder PEH is passed through the cutout groove 104 of the support hole 103, and the support hole 103 is positioned below the pipe electrode PE. Next, the holding state of the electrode holder PEH of the spindle 111 is released, and the electrode holder PEH is dropped into the support hole 103. Next, the chuck pallet 105 of the pipe electrode exchanging device 2C is retracted to the standby position. In the small-hole electric discharge machine 2, the above-mentioned pipe electrode exchange operation is automatically repeated, and a large number of pipe electrodes PE loaded on the pallet for chuck 105 are exchanged for consumable pipe electrodes PE and are used sequentially. The pipe electrode PE in the electric discharge machine 2 is always replaced with a new one, and the small hole electric discharge machining can be automatically and continuously performed on the workpiece W.

As a mechanism for automatically attaching and detaching the pipe electrode holder and the pipe electrode PE in the small hole electric discharge machine 2, a conventional pipe electrode exchange mechanism can be used.
It is preferable to use the pipe electrode holding device disclosed in Japanese Patent No. 3321. The pipe electrode holding device is actually open flat 1-143321.
Since it is described in detail in the official gazette, its description is omitted here.

Next, the die sinking electric discharge machine 3 will be described with reference to FIGS. Fig. 37 is a plan view of the machining table part of the EDM machine, Fig. 38 is a front view of Fig. 37, Fig. 39 is a side view of the machining table part of the EDM machine, and Fig. 40 is machining. Plan view of tank device,
41 is a front view of FIG. 40, FIG. 42 is a sectional view showing a part of a wall of the processing tank of FIG. 40, and FIG. 43 is a part of a mechanism of an opening / closing door of the 40th processing tank. FIG.

The die sinking electric discharge machine 3 can be provided with an automatic electrode exchanging device and the like, similarly to the conventional one. Die-sinking electric discharge machine 3
Are almost the same as those of the prior art except for the mechanism for loading / unloading the pallet P on the processing table, the mechanism for fixing the pallet P to the processing table, and the processing tank. A different device will be described. Also,
In the drawings, the reference numerals given to the die sinking electric discharge machine 3 denote the same parts as those of the wire electric discharge machine 1 having the same functions.

The machining operation of the die sinking electric discharge machine 3 can be performed, for example, as shown in FIG. When the preparation for machining of the die sinking machine 3 is completed, the controller issues a signal to the NC program and also issues a command to the stacker crane 6, and the stacker crane 6 sends the signal to the die sinking machine 3 to the shelf 19 of the rack 4.
A work of loading a pallet P in which a workpiece W accommodated in the pallet P is set or a pallet P in which a workpiece W processed by the wire electric discharge machine 1 is set. Die-sinking electric discharge machine 3
When the pallet P is set, the die sinking electric discharge machine 3 operates to perform electric discharge machining on the workpiece W into a predetermined machining shape.
When the EDM is completed for the workpiece W, the workpiece W
The pallet P loaded with is loaded on a predetermined shelf 19 of the rack 4 by the stacker crane 6 or carried out to the setup station 36.

In the die-sinking electric discharge machine 3, the workpiece W is
The pallet P is provided with an intermediate transfer device 7 and an elevating device for a processing table 75 fixed to a jig base 74 mounted on the XY table in an electrically insulated state.
It is automatically loaded and unloaded by 122. The die sinking electric discharge machine 3 includes a filtering device 21 for circulating and filtering a machining fluid for filtering a machining fluid used during electrical discharge machining, a pallet support member 120 for supporting the pallet P from the intermediate transfer device 7, An elevating device 122 for moving the pallet P up and down by moving the pallet holding member 120 up and down in the processing tank 76K, and an elevating device 122 for fixing the pallet P on the pallet supporting member 120.
Pallet pressing devices 77 and 77A for setting the position of the pallet P lowered by the clamp device 78, the elevating device 122,
A processing tank device 79K having an openable and closable door 80D for storing a processing liquid provided in a processing tank 76K attached to 4 is provided. A jig base 74 is fixed on the XY table of the die sinking electric discharge machine 3 in an electrically interrupted state, and a machining tank 76K is attached to the jig base 74. A pair of processing tables 75 serving as position reference means are fixed to the jig base 74 or the upper surface of the bottom wall 67. The jig base 74 is provided with clamping devices 78 located on both sides of the processing table 75. The processing table 75 is provided with pallet pressing devices 77 and 77A for fixing the loaded pallet P at a predetermined position. The pallet support member 120 is provided with support rollers attached to a connecting bar 82 fixed to a piston rod 82P that moves up and down in the cylinder 121 (three on each side in the figure).
Is shown). Each connecting bar 82 is provided with a guide roller 126 for guiding the side and upper surfaces of the pallet P when positioning the pallet P with the pallet pressing devices 77 and 77A.

The working table 75 in the die sinking electric discharge machine 3 is fixed to a jig base 74 so as to extend along the both ends of the pallet P so as to support both ends of the pallet P. The mounting structure between the processing table 75 and the jig base 74 is not particularly limited. The processing table 75 is configured to move in the horizontal direction together with the horizontal movement of the table that is servo-moved by the NC device. I have. Processing table 75
In order to fix the pallet P on the processing table 75 when the pallet P is pressed, clamps 85 facing both sides of the pallet 10 are vertically Each is movably fixed.

The elevating device 122 includes two cylinders 121 provided in the front-rear direction and two cylinders in the left-right direction. Each connecting bar 82 arranged on both sides is attached to each cylinder 121 on both sides via a bracket 82B. Each connecting bar 82
Can be moved up and down by the operation of cylinders 121 provided at both ends. The vertical stroke of the connecting bar 82 is configured to be large, and
From the loading / unloading height of the pallet P to the height of the engraving process set on the processing table 75. At the rear of the connecting bar 82, a shaft 82S is rotatably attached to the connecting bar 82 via a bracket 82C. Pinions 124 are attached to both ends of the shaft 82S. On the other hand, racks 82R are provided on both bases of the processing table 75 extending upward on both sides. Each rack 82R has a pinion 1
24 are engaged. Therefore, the vertical movement of the connecting bar 82 due to the operation of the four cylinders 121 is caused by the pinion 124
The two cylinders move up and down as they mesh
The bracket 82B which moves up and down by the operation of
The connecting bar 82 can be moved up and down in a horizontal state.

When the pallet P is carried in and out of the die sinking electric discharge machine 3, the connection bar 82 is slightly moved upward by the operation of the cylinder 121 to release the fixed state of the pallet P of the clamp 85 and can be carried out by the intermediate transfer device 7. To be in a state,
The pallet P from the intermediate transfer device 7 is brought into a state where it can be carried in. Further, a reference metal fitting 81 for setting a vertical position, which is a positioning stopper, is attached to an upper end portion, that is, a base of the processing table 75 (FIG. 38). The upper surface of the reference fitting 81
Functions as the reference surface 81S. The pallet P is lowered onto the processing table 75 by the elevating device 122, and the reference surface 28 on the lower surface of the pallet P is
Is brought into contact with the reference surface 81S of the reference fitting 81 of the descending platform 75,
When the position of the pallet P is set on the worktable 75, the cylinder 121 is operated to operate the clamp device 78 and the clamp 85 is operated.
Press the pallet P downward. Therefore, the finishing surface of the lower surface of the pallet P, that is, the reference surface 28 is the reference surface 81S of the reference fitting 81.
, The pallet P is accurately and reliably positioned with respect to the processing table 75 in the predetermined height direction. A magnet 125 is attached to the connecting bar portion near the reference surface 28 so as to be pressed toward the pallet P by the spring force of the spring and to be able to sink against the spring force when pressed in the forward direction. The magnet 125 has a function of preventing the position of the pallet P from moving when the cylinder 121 is operated and the clamping device 78 is operated.

Further, in the die sinking electric discharge machine 3, the reference surfaces 29K and 30K of the pallet P are moved by the pallet pressing devices 77 and 77A.
It is pressed against the positioning stoppers 84 and 87 provided in the fifth step. A pallet pressing device 77 for pressing the pallet P to a predetermined position in the forward direction of the processing table 75 is provided with a reference surface 29 of the pallet P on a positioning stopper provided on the processing table 75, that is, a reference surface of a reference metal fitting 84.
It has cylinders 86C provided on the working table 75 on both sides of the working table 75 for pressing against the 84S. In addition, the pallet P is
The pallet pressing device 77A, which presses the pallet P at a predetermined position in the lateral direction, presses the reference surface 30K of the side surface of the pallet P against the positioning stopper provided on the processing table 75, that is, the reference surface 87S of the reference metal fitting 87. It has a cylinder 88 provided on the processing table 75 in the direction. In the cylinders 86C and 88, fluid chambers are formed on both sides of the piston reciprocating in the cylinder, and the piston reciprocates in the cylinders 86C and 88 by introducing a fluid into the fluid chamber on either side.

In the pallet pressing device 77 for pressing the side end of the pallet P against the reference metal fitting 84 of the processing table 75, the end of the piston rod 90 fixed to the piston in the cylinder 86C is connected to the pallet P
Is configured to be able to abut on one side. Therefore, when the cylinder 86C operates and the piston rod 90 extends, the front end face of the piston rod 90 contacts the rear end face of the pallet P,
The pallet P is pressed in the front direction, and the reference surface 29S of the reference metal fitting 29 provided on the front surface of the pallet P is brought into contact with the reference surface 84S of the reference metal fitting 84 provided on the processing table 75. You can set the position.

In the pallet pressing device 77A for pressing the reference surface 30K at the side end of the pallet P against the positioning stopper of the processing table 75, that is, the reference fitting 87, the end of the piston rod 89 fixed to the piston in the cylinder 88 is connected to the pallet P. Is configured to be able to contact one side. Therefore, if the cylinder 88 operates and the piston rod 89 extends, the piston rod 89
Abuts against the side surface of the pallet P, and presses the pallet P in the side direction.
The pallet P can be set at a predetermined lateral position by bringing the reference surface 30K into contact with a positioning stopper 87 provided on the processing table 75.

In the electric discharge machine 3, the pallet P is fixed to the work table 75 of the electric discharge machine 3 by a plurality of clamps 85 of a clamping device 78. Part. Clamping device 78
Are the four cylinders 121, the piston rod 82P which moves up and down by the operation of the cylinder 121, the connecting bars 82 fixed on both sides via the bracket 82B attached to the piston rod 82P, and the clamp 85 attached to the center of the connecting bar 82. It is composed of In addition, a guide column 82G is fixed to the processing table 75 in order to smoothly move the connecting bar 82 up and down. The clamp device 78 is provided with a pallet fixing sensor and a pallet release sensor (not shown) for detecting that the cylinder 121 is operated to fix or release the pallet P on the processing table 75.

Pallet P is clamped by clamp 85 and reference metal fitting of worktable 75
In order to fix the piston on the cylinder 81, the piston rod 82P moves downward by introducing a fluid into the cylinder 121 through a fluid passage and moving the piston downward. Therefore, bracket 82B
And the clamp 85 attached to the piston rod 82P via the connecting bar 82 moves downward. The downward movement of the clamp 85 presses the pallet P onto the processing table 75 and fixes the pallet P to the processing table 75. In order to release the fixing of the pallet P to the worktable 75 by moving the clamp 85 of the clamp device 78 upward, the cylinder 121 can be operated in the reverse direction.

In the die-sinking electric discharge machine 3, the machining tank device 79K is particularly shown in FIGS. 40, 41, 42 and 43.

The machining tank device 79K has a machining tank 76K attached to a jig base 74 on an XY table of the die sinking electric discharge machine 3, and is filled with a machining liquid when the workpiece W is die sinked. Things. The processing tank 76K is formed in a closed structure to fill the processing liquid, has an open upper part, and has a notched opening 80A for carrying in and out a pallet P on which a workpiece W is set. Bottom wall 76B which is a sub base attached to wall 76F, rear wall 76R, both side walls 76S, and jig base 74
It is composed of The notch 80A of the front wall 76F is configured to be closed by an openable door 80D. The processing tank device 79K is provided with an opening 80A formed for carrying the pallet P into and out of the above-mentioned walls and the front wall 76F forming the processing tank 76K, and an opening to the front wall 76F for sealing or opening the opening 80A. Door 80D that can be moved downward sometimes, Door 80D
And a vertical movement mechanism for vertically moving the door 80D by the operation of the cylinder 92A. In the processing tank device 79K, the vertical movement mechanism of the opening / closing door 80D includes an opening / closing door 80D for opening and closing the opening 80A, a guide column 127 provided on both sides of the opening / closing door 80D and fixed to the front wall 76F, and an upper end of the guide column 127. Cylinder 92A attached to the part, a piston rod 92P fixed to a piston reciprocating vertically in the cylinder 92A, and a bracket 92B attached to the lower end of the piston rod 95P and fixed to the lower part of the door 80D.
It is composed of That is, the cylinder 92A and the piston rod 95P function as an actuator for moving the door 80D up and down.

In addition, in the vertical movement mechanism of the door 80D,
27 functions as a guide for the opening / closing door 80D and guide posts 127
Guide rollers 117 provided on the upper and lower sides of both sides of the opening / closing door 80D are engaged with the guide grooves 118 formed at the bottom of the door (No. 43).
Figure). A bracket 76B is fixed to the guide column 127, and a cylinder 80C that operates the piston rod 80P is fixed to the bracket 76B (FIG. 42). When the piston 80P protrudes due to the operation of the cylinder 80C, the tip of the piston rod 80P functions to press the opening / closing door 80D against the front wall 76F. That is, when the opening and closing door 80D is raised by the operation of the cylinder 92A and the opening 80A of the front wall 76F is closed by the opening and closing door 80D, the cylinder 80C is operated to move the opening and closing door 80D to the front of the front wall 76F with the piston rod 80P. Press. In addition, a sealing material 80S is disposed between the door 80D and the front wall 76F.
Since the opening / closing door 80D and the front wall 76F abut in a closed state, it is possible to prevent scattering of the processing liquid in the processing tank 76K or leakage of the processing liquid.

The processing tank device 79K includes an open end sensor for detecting the open state of the open / close door 80D and a closed end sensor for detecting the closed state of the open / close door 80D in order to detect the open / close state of the open / close door 80D. Open end sensor and closed end sensor are located on the front wall.
76F, door 80D, cylinder 92A, etc. Therefore, the open / close door 80D is detected by the open end sensor.
When the controller detects that the pallet is in the open state, the controller receives the detection signal and controls the pallet P located at the intermediate transfer device 7 to move onto the pallet support member 120 of the die sinking electric discharge machine 3. Alternatively, the intermediate transfer device 7 transfers the pallet P on the processing table 75 from the pallet support member 120.
Control to move to. Further, the closed state of the opening / closing door 80D is detected by a closed end sensor.
Is controlled to operate.

As described above, since the device for positioning the pallet P on the worktable 75 in the die sinking electric discharge machine 3 is constituted, it can be operated as follows. In order to open the opening / closing door 80D of the machining tank device 79K provided in the die sinking electric discharge machine 3, the cylinder 92A is operated to extend the piston rod 95P downward, and the opening / closing door 80D is lowered to open the opening 80A. On the other hand, to raise the pallet support member 120 by operating the elevating device 122, the cylinder 121 of the clamping device 78 is operated to operate the piston rod 82P.
And the connecting bar 82 is raised. When the connecting bar 82 is raised, the pallet P is brought into a state where it can be carried into the pallet supporting member 120 located above the processing table 75. The pallet P is sent onto the pallet support member 120 by the lifter 100 of the intermediate transfer device 7. Push-out arm 101 of lifter 100
The pallet P moves forward to move the pallet P to the pallet support member 120.
Push up. Next, the lifter of the intermediate transfer device 7
100 is slightly lowered, the locking pin 7P of the push-in / pull-out arm 101 is disengaged from the concave portion 33 formed in the pallet P, and then the push-in / pull-out arm 101 of the lifter 100 is retracted to the intermediate transfer device 7 side. After that, the cylinder 1
Pallet support member 12 on which pallet P is mounted by operating 21
0 is lowered onto the processing table 75. When the pallet support member 120 moves up and down, the magnet 125 attached to the connecting bar 82 is used.
Springs out to the pallet P side by the spring force of the spring, and prevents the pallet P from moving on the pallet support member 120.
As a result, the reference surface 28 formed on the lower surface of the pallet P is placed in a state of being in contact with the reference surface 81S of the reference fitting 81 of the processing table 75.

In this state, the pallet pressing device 77 is operated to extend the piston rod 90, and the rear end of the pallet P is pressed so that the positioning stopper of the processing table 75, that is, the reference surface 84 of the reference fitting 84 is pressed.
Press on S. The position of the front end face of the pallet P is set by the action of the pallet pressing device 77. Next, the pallet pressing device
The cylinder 88 of 77A is operated to push the side end face of the pallet P sideways with the piston rod 89, and the reference surface 30S of the reference fitting 30 on the side end face of the pallet P is moved to the reference fitting 8 provided on the worktable 75.
7 against the reference surface 87S, and the side end surface of the pallet P
Set the position on 75. In this way, the pallet P is
After the upper position is set, the clamp device 78 is operated to lower the clamp 85 slightly, and the pallet P is pressed against the worktable 75 by the clamp 85, and the reference surface 28 on the lower surface of the pallet P is set on the worktable.
The pallet P is fixed on the processing table 75 by bringing the pallet P into contact with the reference surface 81S of the reference metal fitting 81 in a pressed state. Therefore, the pallet P
Can be set at a predetermined processing position of the processing table 75 which is determined in advance. Of course, in all of these operation steps, each detection signal of each sensor is input to the controller, and based on the input signal, the controller issues an operation signal of the next step,
It is configured to operate a predetermined device. next,
When the setting of the position of the pallet P on the processing table 75 is completed, the cylinder 92A of the processing tank device 79A operates and the opening / closing door 80D rises. Close the loading / unloading entrance.

In this state, the machining tank 76K is filled with the machining fluid, and the die sinking electric discharge machine 3 is operated to start the die sinking electric discharge machining for the workpiece W preset on the pallet P. The electric discharge machining is performed on the workpiece W, a predetermined machining shape is machined on the workpiece W, and when the electric discharge machining is completed, the machining fluid in the machining tank 76K is discharged, and then the cylinder 92A of the machining tank device 79K is pushed.
Operates to lower the open / close door 80D, open the opening 80A, and open the loading / unloading port of the pallet P. Next, the piston rods 90, 89 of the pallet pressing devices 77, 77A are inoperative and retracted. Further, the pallet P is raised by operating the cylinder 121 of the lifting device 122 to raise the pallet support member 120. Next, the lifter 100 of the intermediate transfer device 7 operates to move the pallet P from the pallet support member 120 to the intermediate transfer device 7 side.

Next, in order to transfer the pallet P between each of the processing machines 1, 2, 3 and the stacker crane 6, each of the processing machines 1, 2, 3,
Regarding the intermediate transfer devices 7 provided in
This will be described with reference to FIGS. FIG. 46 is a front view showing the entire intermediate transfer device, FIG. 47 is a side view of FIG. 46,
Fig. 48 is a front view of the upper part of the intermediate transfer device, and Fig. 49 is
48 is a plan view, FIG. 50 is a side view of FIG. 48, FIG. 51 is a front view of a lower portion of the intermediate transfer device, and FIG. 52 is a plan view of FIG.

The intermediate transfer device 7 mainly includes a carriage 163 with rollers 162 capable of reciprocating on a slide rail 161 laid on a base 160, a lifter 100 provided on a frame 164 of the carriage 163, and a push-in / draw-out arm 101 provided on the lifter 100.
Having. At the upper end of the frame 164 of the carriage 163, a locking pin 168 engaging with the concave portion 32 formed in the pallet P at the front end side is provided.
A pallet seat 168S on which the lower surface of the pallet P sits is provided at the rear end.

The base 160 includes a cylinder 159 serving as a driving device of a cart 163 fixed to the base 160, a piston rod 172 reciprocating in the cylinder 159, a cart 163 with a roller 162 fixed to the piston rod 172, and a cart 163 operating the cylinder 159. A slide rail 161 laid on the base 160 is provided for running the vehicle. The slide rail 161 extends in a horizontal direction perpendicular to the traveling path 5 of the stacker crane 6, that is, the traveling direction.

The carriage 163 includes a carriage frame 164 reciprocating on the base 160, a receiving member 173 of the pallet P formed on the upper surface of the carriage frame 164, and a locking pin 168 protruding from the upper surface of the receiving member 173.
And lifter 100 that can be moved up and down mounted on the frame
have. The two receiving members 173 are arranged in parallel with the slide rail 161 in an upward direction. Each receiving member 173
The upper surface is finished so that the surfaces formed by the respective receiving members 173 are at the same level, and are also configured to be parallel to the moving surface formed by the slide rail 161.

The lifter 100 has a cylinder 166 fixed between the receiving members 173 and fixed to the frame 164, a reciprocating piston rod 169 in the cylinder 166, a lifter frame 165 fixed to the piston rod 169, and mounted on the lifter frame 165. The push-in / pull-out arm 101 is provided. Therefore,
The pushing / pulling-out arm 101 provides a slide mechanism in which the fork-shaped arm 171 can reciprocate back and forth by a slide rail 180 with respect to the base of the lifter 100, that is, the lifter frame 165 by the operation of the cylinder 166.

The push-out arm 101 of the lifter 100 includes a cylinder 167 fixed to the lifter frame 165, a piston rod 172 reciprocating in the cylinder 167, and a piston rod 172.
Has a fork-like arm 171 fixed to it. The tip of the fork-shaped arm 171 of the push-in / draw-out arm 101, that is, the processing machine 1, 2, 3
An operating pin 170 that engages with the concave portion 33 of the pallet P is formed on both sides at the front end on the side.

The intermediate transfer device 7 is configured as described above, and operates as follows. In the intermediate transfer device 7, the carriage 16
The operation of the reciprocating movement on the slide rail 161 of the third cylinder 15
9, the up and down movement of the lifter 100 is performed by the cylinder 166 and the push-pull arm 101 in the front-rear direction by each drive unit of the cylinder 167, but each drive is interlocked. is there. First, the cylinder 159 is operated to move the truck 163 to the stacker crane 6 side, that is, the traveling passage 5.
Move to the side. The stacker crane 6 on which the predetermined pallet P is mounted stops on the side facing the intermediate transfer device 7. By the operation of the fork device 50 of the stacker crane 6, the tip fork 60 of the fork device 50 extends onto the intermediate transfer device 7, and the pallet P placed on the tip fork 60 is transferred to the frame 164 of the bogie 163 in the intermediate transfer device 7. The pallet P is placed so that the recess 32 of the pallet P is engaged with the locking pin 168 provided at the upper end.

Next, the cylinder 166 of the lifter 100 of the intermediate transfer device 7 operates, the lifter frame 165 rises, and the operating pin 17 formed on the push-in / draw-out arm 101 provided on the lifter 100.
0 engages with the concave portion 33 provided in the pallet P. When the lifter 100 is further raised, the locking pin 168 provided at the upper end of the frame 164 is detached from the recess 32 of the pallet P. Therefore, the pallet P is placed on the push-in / draw-out arm 101 with the operating pin 170 and the concave portion 33 engaged with each other.
In this state, the cylinder 167 operates, and the push-in / draw-out arm 101 advances to the 1, 2, and 3 sides after processing. As the push-in / draw-out arm 101 advances, the pallet P is carried into the pallet support member on the processing table 75 of the processing machines 1, 2, and 3. The lifter 100 is slightly lowered by the operation of the cylinder 166, and the operating pin 170 provided on the push-in / draw-out arm 101 is separated from the concave portion 33 of the pallet P.
At this point, the cylinder 167 is operated to retract the push-in / draw-out arm 101 toward the intermediate transfer device 7 and to retract. The bogie 163 in the intermediate transfer device 7 is a work W
Are waited on the machining machines 1, 2, and 3 until the electric discharge machining is completed.

Next, when the electric discharge machining of the workpiece W in the machining machines 1, 2, and 3 is completed, a signal indicating the completion of the machining from the controller is received, and the sliding cover 80 and the opening and closing door 80D as the opening and closing door D of the EDM are completely removed. After being released, the cylinder 167 of the push-in / draw-out arm 101 operates, and the push-out / draw-out arm 101 moves forward to the processing machines 1, 2, and 3. When the push-in / pull-out arm 101 is inserted below the pallet P, the cylinder 166 of the lifter 100 operates to raise the push-in / pull-out arm 101 mounted on the lifter 100. The operating pin 170 of the push-in / pull-out arm 101 is engaged with the concave portion 33 of the pallet P, and the pallet P is mounted on the push-in / pull-out arm 101. Here, the cylinder 167 is operated, and the push-in / draw-out arm 101 is retracted toward the intermediate transfer device 7 and retreats. When the push-in / pull-out arm 101 reaches a predetermined position on the bogie frame 164 of the intermediate transfer device 7, the cylinder 166 operates to lower the lifter 100. The lowering of the lifter 100 lowers the push-pull-out arm 101, and the push-pull-out arm 101
The pallet P mounted on the pallet P descends, and the locking pin 168 provided on the bogie frame 164 engages with the concave portion 32 of the pallet P, and the pallet P is placed on the bogie frame 164 and the push-out arm The operating pin 170 of the 101 comes off the concave portion 33 of the pallet P. The push-in / pull-out arm 101 further descends and stops at a predetermined lower position of the bogie frame 164.

Further, the cylinder 159 is operated, and the carriage 163 moves on the rail 161 toward the stacker crane 6. The fork device 50 of the stacker crane 6 operates to extend the tip fork 60, and the tip fork 60 is located below the pallet P. When the tip fork 60 rises slightly, the tip fork 60
Lifts the pallet P, and when the locking pin 67A provided on the tip fork 60 engages with the concave portion 31 of the pallet P, the lower surface of the pallet P is placed on the support pin 67B and the bogie is moved from the concave portion 32 of the pallet P together. The locking pin 168 of the frame 164 comes off. The fork device 50 is operated to move the pallet P onto the stacker crane 6 by retracting the tip fork 60.

The fluid circuit that operates each cylinder in FMS is
For example, it is configured as follows. An example of each cylinder of the wire electric discharge machine 1 and the intermediate transfer device 7 will be described. On the wire electric discharge machine 1 side, fluid from a fluid pressure supply source such as a pump is supplied by a fluid pressure adjusting device, a fluid switching valve, and the like. Through each cylinder 78C, 86, 88, 92 (note that
Fluid pressure is supplied to the cylinder 92 of the slide cover 80. Also, the intermediate transfer device 7
On the side, fluid from a fluid pressure source such as a pump
Each cylinder through a fluid pressure regulator, fluid switching valve, etc.
Fluid pressure is supplied to 159,166,167. Fluid is supplied to each of the cylinders, and the pistons in each of the cylinders reciprocate, whereby the operating state of each of the cylinders is detected by each of the sensors. The detection signal detected by each sensor is input to a controller, and the controller issues a command in response to each detection signal in accordance with an operation process which is input in advance as a sequence, and the wire electric discharge machine 1 and the intermediate transfer device 7 Is operated to carry the pallet 10 in and out of the wire electric discharge machine 1 and to carry it in and out of the intermediate transfer device 7.

In the above, an example of the fluid circuit for the wire electric discharge machine 1 and the intermediate transfer device 7 has been described. However, the stacker crane 6, the small hole electric discharge machine 2, the die sinking electric discharge machine 3, the rust prevention treatment device 10, and the fluid spraying A similar fluid circuit can be applied to the device 12.

Also, the reference surface of the reference member of each processing table and the pallet P
Needless to say, a reference surface cleaning device for cleaning the reference surface can be provided. By providing the reference surface cleaning device, the reference surface of each of the processing tables for setting the pallet P and the reference surface of the pallet P can be cleaned every pallet setting or every predetermined period. It can be set on each processing table, and the processing accuracy for the workpiece can be improved.

〔The invention's effect〕

The pallets that can be used in the FMS according to the present invention are configured as described above.
The pallet can be used in common for equipment such as setup and indexing, processing, etc., and it can be carried in and out of the equipment from equipment to equipment very reliably and smoothly. If the reference means provided on the pallet is shared by each processing machine in the processing machine group,
The position of the pallet can be always accurately and reliably set on each processing machine, and the processing accuracy for the workpiece can be improved.
Furthermore, the center of the pallet body is cut out of a cutout hole wider than the processing area of each processing machine, and the workpiece is arranged in the processing area. Since the pallet main body is provided with a reference means that matches the processing reference means of the processing table provided on the processing machine in order to set the pallet at a predetermined position on the processing table, the pallet can be accurately and quickly transferred to the processing machine. Position can be set. In particular, since the reference means provided on the pallet main body are reference metal fittings provided on the front end face and the side end face of the pallet main body, the pallet main body can be replaced with an extremely simple structure,
The position of the pallet itself can be reliably set for each device.
It is possible to prevent the reference metal fitting from being deformed or being out of order at the time of transportation, unloading, storage, or the like. Further, since the fixing means for setting the workpiece at a predetermined position is provided on the pallet main body at a position predetermined by the reference means and outside the processing area of the processing machine, the type and size of the workpiece may vary. Accordingly, the workpiece can be accurately set at a predetermined position on the pallet.

Therefore, a pallet in which workpieces are set in advance is used for processing machines and racks equipped with a number of various types of processing machines (EDMs) such as royal discharge machines, small hole electric discharge machines, and die-sinking small hole electric discharge machines in FMS. When carrying and carrying in and out with a stacker crane that reciprocates along the traveling system with the stock location of the pallet, the pallet for the EDM can be commonly positioned for carrying in and out. A set-up indexing device, a rustproofing device for applying rustproofing to a workpiece, and a fluid spraying device for removing foreign matter such as machining fluid, foreign matter, and dust attached to the surface of the workpiece; The workpiece is transported in a positioning state through each device of an intermediate transfer device for reciprocating between the stacker crane and the processing machine group to transfer the workpiece while maintaining the positioning state.
It can be used for both loading and unloading. Therefore, by using the pallet, it is possible to provide an FMS that can completely automate various types of processing on a workpiece and can continuously perform various types of processing on a workpiece regardless of day and night.

Further, the pallet body has a locking means for engaging with a locking means of a loading / unloading / moving device such as a stacker crane and an intermediate transfer device which reciprocate with the pallet loading / unloading station. The pallet can be set accurately, quickly, and unattended by the loading / unloading moving device. Therefore, the pallet is carried into the processing machine by the stacker crane and the intermediate transfer device, and the workpiece can be automatically set at a predetermined position on the processing table of the processing machine quickly, unmannedly and automatically. After the machining of the workpiece, the intermediate transfer device and the stacker crane can be automatically and unmannedly unloaded from the processing machine group to the intermediate machine.

Further, the fixing means has a workpiece holder fitted and fixed in the cutout hole, a workpiece setting jig attached to the workpiece holder, and a clamp for fixing the workpiece provided on the workpiece setting jig. By replacing the workpiece holder and the workpiece setting jig according to the type of workpiece, the workpiece can be firmly and reliably fixed to the pallet body corresponding to various types of workpieces.

The locking means provided on the pallet main body is a concave portion formed in the pallet main body, and the pin serving as the locking means of the carrying-in / out moving device is engaged with the concave portion. Since there are no protrusions, pallets are easy to handle and can be stored easily by stacking.

Further, the carrying-in / out moving device includes a stacker crane that reciprocates from a rack having a plurality of shelves along a traveling path provided along each of the processing machine groups, and a stacker crane and each of the processing machines. Since each intermediate transfer device is reciprocated, if the pallet is formed with a recess in which the locking means of each device is engaged, the pallet itself can be reliably transported and carried in and out.

The pallet loading / unloading station is, for example,
A rack with a plurality of shelves having pallet access openings,
A setup and indexing device equipped with a pallet mounting table for loading and positioning the pallets for loading and unloading the pallets with respect to the stacker crane. It is a rust prevention treatment device provided or a fluid spraying device provided in a pallet traveling system for spraying a fluid to remove a deposit attached to the surface of the workpiece.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing an FMS to which a pallet according to the present invention can be applied, FIG. 2 is a schematic front view of FIG. 1, FIG. 3 is a schematic plan view showing another FMS to which a pallet according to the present invention can be used, 4 is a plan view showing an embodiment of the pallet according to the present invention, FIG. 5 is a sectional view taken along line VV in FIG. 4, FIG. 6 is a sectional view taken along line VI-VI in FIG. FIG. 7 is a plan view showing a setup and indexing device that can be used for FMS, FIG. 8 is a front view of FIG. 7, FIG. 9 is a front end side view of FIG.
FIG. 10 is a schematic front view showing the entire stacker crane,
FIG. 11 is a side view of FIG. 10, FIG. 12 is a perspective view schematically showing a stacker crane, FIG. 13 is a perspective view schematically showing a fork base mounted on the stacker crane, and FIG. 15 is a front view showing the lower part, FIG. 15 is a front view showing the upper part of the stacker crane, FIG. 16 is a sectional view showing the transmission mechanism of the fork device of the stacker crane, FIG. 17 is a front view of the fork device, and FIG. FIG. 19 is an explanatory view showing a state in which the fork device is extended, FIG. 19 is an explanatory view showing a state in which the fork device is contracted, FIG. 20 is a front view of the rust prevention treatment device, FIG. 21 is a side view of FIG. Fig. 22 is a side view of the machining table part of the wire electric discharge machine, Fig. 23 is a front view of Fig. 22, Fig. 24 is a plan view of the machining table part of the wire electric discharge machine, Fig. 25 is Fig. 24 Fig. 26 is another side view of the worktable part of the wire electric discharge machine, and Fig. 27 is a clamp device. Partial cross-sectional view of, 28
The figure is a perspective view of the processing tank cover device, FIG. 29 is a sectional view of FIG. 28, FIG. 30 is a plan view of the processing tank cover device, and FIG.
FIG. 32 is a plan view of a small hole electric discharge machine and a pipe electrode changing device, and FIG. 33 is a side view of a pipe electrode changing device.
34 is a sectional view taken along the line IIIX-IIIX in FIG. 32, FIG. 35 is a plan view of the index table, and FIG. 36 is a line B in FIG.
-B is a cross-sectional view, FIG. 37 is a plan view of a machining table portion of the die-sinking machine, FIG. 38 is a front view of FIG. 37, and FIG. 40 is a plan view of the processing tank device, FIG. 41 is a plan view of FIG. 40, FIG. 42 is a cross-sectional view showing a part of the wall of the processing tank of FIG. 40, and FIG. FIG. 44 is an explanatory view showing a part of the mechanism of the opening and closing door of the processing tank, FIG. 44 is a schematic front view showing a work piece removing device attached to a wire electric discharge machine, FIG. 45 is a side view of FIG. 46 is a front view showing the entire intermediate transfer device, FIG. 47 is a side view of FIG. 46, FIG. 48 is a front view of the upper part of the intermediate transfer device, FIG. 49 is a plan view of FIG. 50 is a side view of FIG. 48, FIG. 51 is a front view of the lower part of the intermediate transfer device, FIG. 52 is a plan view of FIG. 51, and FIG. Bro to explain Diagram, No. 54
The figure shows a block diagram showing the setup work, FIG. 55 is a block diagram showing the machining of a small hole electric discharge machine, FIG. 56 is a block diagram showing the machining of a wire electric discharge machine, and FIG. It is a block diagram which shows the process of. 1 ... wire electric discharge machine, 2 ... small hole electric discharge machine, 3 ... die sinking electric discharge machine, 4 ... rack, 5 ... traveling passage, 6 ... stacker crane, 7 ... intermediate transfer device, 8… Pallet body, 9… Setup setup device, 10… Rust prevention treatment device, 11 ……
Pallet mounting table, 12 …… Fluid spraying device, 19 …… Shelves, 20…
… Opening, 24 …… Cutout hole, 25 …… Workpiece holder, 26 ……
Workpiece set jig, 27 …… Clamp, 28,29K, 30K, 81S, 84
S, 87S …… Reference plane, 29,30 …… Reference bracket, 29F …… Front end face, 30
S ... side end face, 31, 32, 33 ... recess (locking means), 79 ... processing tank cover device (processing tank device), 79K ... processing tank device, 81
…… Reference metal fittings (reference means), 82 …… Connection bar, 84,87 ……
Positioning stopper (reference means), P… Pallet, W… Workpiece, WE… Wire electrode, PE… Pipe electrode, RE… Engraved electrode.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Junji Tanaka 1 at 868 Kubo, Oga, Koga-cho, Kasuya-gun, Fukuoka Prefecture Inside (72) Inventor Yuji Fukusaki 868, Oku-kubo, Koga-cho, Kasuya-gun, Fukuoka 1 Within Seibu Electric Co., Ltd. (72) Takashi Mitsuyasu, inventor, 868, Kubo, Oga, Koga-cho, Kasuya-gun, Fukuoka Prefecture Inside Tatsuji Komatsu, Inventor Tatsushi Komatsu, 868, 868, Kubo, Koga-cho, Kasuya-gun, Fukuoka Inside Seibu Electric Co., Ltd. (72) Inventor Kiyotaka Miyagi 1 at 868 Kubo, Oga, Koga-cho, Kasuya-gun, Fukuoka Prefecture Inside of 72 Seibu Electric Co., Ltd.Yonori Noda 1 at 868 Kubo, Oga-ku, Koga-cho, Kasuya-gun, Fukuoka 1 West Inside Electric Co., Ltd. (72) Inventor Tsutomu Watanabe 868 Kubo, Oga, Koga-cho, Kasuya-gun, Fukuoka Prefecture 134124 (JP, A) JP-A-63-74898 (JP, A) JP-A-2-212051 (JP, A) JP-A-62-120960 (JP, A) Real opening 63-44722 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) B23Q 7/00 B23Q 41/00 B23H 7/02

Claims (6)

(57) [Claims] 1. A center portion of a pallet body is cut out wider than a processing area of each processing machine, and a cutout hole in which a workpiece can be arranged with respect to the processing area is set at a predetermined position on a processing table of the processing machine. A reference means provided on the pallet main body which matches the processing reference means of the processing table provided on the processing machine, and a predetermined position from the reference means for setting the workpiece at a predetermined position; The pallet main body engages with a fixing means provided on the pallet main body outside the processing area of the processing machine and a locking means included in a carry-in / out moving device reciprocating between the processing machine and the pallet carry-in / out station. The pallet body is provided with locking means, and the reference means provided on the pallet body is constituted by reference metal fittings provided on a front end face and a side end face of the pallet body. Bloomers two-Manufacturing system that can be used for palette. 2. The fixing means according to claim 1, wherein said fixing means is a work holder fitted and fixed in said cutout hole, a work setting jig attached to said work holder, and a clamp for fixing said work provided on said work setting jig. A pallet usable for the flexible manufacturing system according to claim 1, comprising: 3. The pallet main body according to claim 1, wherein said pallet main body has a locking means formed in said pallet main body, and said pin is used as said locking means of said carrying-in / out moving device. 2. A pallet usable in the flexible manufacturing system according to 1. 4. A stacker crane that reciprocates from a rack having a plurality of shelves along a traveling path provided along each of the processing machine groups, and a stacker crane and each of the processing machines. The pallet usable for the flexible manufacturing system according to claim 1, comprising each intermediate transfer device that reciprocates between the pallets. 5. A pallet loading / unloading station for mounting and positioning the pallet body for loading and unloading the pallet body in a positioning state with respect to a rack and a stacker crane having a plurality of shelves having pallet loading / unloading openings. A setup and indexing device equipped with a pallet mounting table, a rust prevention treatment device installed in the pallet traveling system to perform rust prevention treatment on the work, or a spray that removes deposits attached to the surface of the work by spraying fluid 2. A pallet usable in the flexible manufacturing system according to claim 1, wherein the pallet is a fluid spraying device provided in the pallet traveling system. 6. A pallet having a plurality of processing machines, a rack having a plurality of shelves for accommodating the pallet body, a processing station for performing processing such as rust prevention of the workpiece, and a loading / unloading station for the pallet body. The pallet main body on which the workpiece is set is transferred to the respective processing machines while maintaining the positioning state by the pallet transfer device which reciprocates between the workpieces, and the workpiece on the pallet main body is automatically transferred by the respective processing machines. The pallet usable in the flexible manufacturing system according to claim 1, wherein the pallet is applied to a flexible manufacturing system that performs electric discharge machining.