JPH03287339A - Pallet available for flexible manufacturing system - Google Patents

Abstract

PURPOSE:To carry out various processes fully automatically by providing a cut hole to allow to position a work, standard means coincident to the process standard means of a process board, a fixing means to set the work at a specific position, and locking means to engage with carrying in-and-out and moving devices, to a pallet main body. CONSTITUTION:In a pallet P, the center of a pallet main body 8 is cut away to form a cut hole 24 wider than the processing area of verious processing machines, standard means 29 and 30 coincident to the process standard means of a process board provided on the processing machine are provided, and a fixing means 25 to set a work at a specific position is provided at the position determined beforehand by the standard means and outside the process area of the processing machine. Furthermore, locking means 31 to 33 to engage with the locking means furnished to carrying in-and-out and moving devices such as a stacker crane reciprocating between the pallet carrying in-and-out station, and an intermediate delivery device are provided. As a result, various processes to the work can be carried out continuously and providing no worker.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a method for processing a workpiece using a wire electric discharge machine, a small-hole electric discharge machine, a die-sinking electric discharge machine, Setting workpieces that can be used in a flexible manufacturing system in a group of processing machines, such as laser processing machines, water jet processing machines, etc., that automatically transports workpieces into and out of predetermined processing machines and processes the workpieces. Regarding the palette.

[Conventional technology]

In general, a wire electrical discharge machine uses a vertically running portion of a wire electrode to generate electrical discharge between the workpiece and the wire electrode, thereby machining the workpiece using electrical discharge energy. The wire electrode is guided by various rollers such as a tension roller and a brake roller in an automatic wire feeding device, and is supplied to a wire head having a wire guide after being applied with an appropriate tension run. In this wire electric discharge machine, the X-Y table on which the workpiece is attached moves in the X direction and Y direction according to the machining status of the workpiece according to commands from the NG device, and the movement of both is stopped.
Machining progresses between the electrode and the X-Y table. During machining, the electrode and the X-Y table repeat servo movement, and the workpiece is electrically discharge-machined into a predetermined machining shape by the relative movement of the two.

In addition, for small and large electrical discharge machines, electrical discharge machining is performed to create a small or small hole at a predetermined position on the workpiece, or
In order to perform electrical discharge machining on a workpiece using a wire electrical discharge machine, a start hole is made at a predetermined position on the workpiece through which a wire electrode is passed through electrical discharge machining, and electrical discharge is generated between the workpiece and the vibrating electrode to generate electrical discharge energy. This is used to machine workpieces into small pieces.

In addition, a die-sinking electric discharge machine machine processes the workpiece by generating electric discharge between the workpiece and an electrode of various shapes such as a rod shape, and using the electric discharge energy.

2. Description of the Related Art Recently, various apparatuses have been disclosed regarding electric discharge machines to accomplish machining such as machining of large workpieces, progressive machining, and unmanned machining through automation. When such electric discharge machining is performed automatically, if the wire electrode is cut or lost during electric discharge machining, or if the vibrator electrode or rod-shaped electrode is worn out, the wire electrode, vibrator electrode, or An electrode exchange device is provided that automatically exchanges a die engraving electrode. For example, JP-A-63-13961
No. 6 discloses a wire electrode exchange device.

In addition, the automatic wire electrode feeding method for a wire electrical discharge machine is
For example, Japanese Patent Application No. 63-13, which is an application filed by the present applicant.
No. 9616. Furthermore, a wire electrical discharge machine that automatically takes out a core, that is, a workpiece from a workpiece, is disclosed in, for example, Japanese Patent Application No. 1-98878 filed by the present applicant.
Disclosed in the issue.

In addition, regarding small and large electrical discharge machines, for example,
246021 Publication, Utility Model Application Publication No. 1-143321,
Some of these are disclosed in Japanese Utility Model Application Publication No. 1-143321. JP-A-1-246021 discloses a pipe electrode exchange device.

Further, as an FM varnish for wire electric discharge machines, there is one disclosed in Japanese Patent Application Laid-Open No. 120960/1983.

The FMNIS has a circular workpiece moving station in the center, and around it are various types of wire-cut electrical discharge machining station, die-sinking electrical discharge machining station, laser processing station, electrical discharge coating processing station, and water jet processing station. . When processing with FM Varnish, the most suitable processing method is first selected, and a series of operations are carried out using a program input into the computer of the control device that collectively controls the entire FM Varnish.

Furthermore, Japanese Patent Laid-Open No. 1-193125 discloses a processing machine equipped with an unloading device.

[Problem to be solved by the invention]

However, none of the conventional electrical discharge machines mentioned above automatically sets and attaches a workpiece to the X-Y table in the electrical discharge machine, which is an obstacle to fully automating the electrical discharge machine.

Therefore, various processing machine groups such as wire electrical discharge machines, narrow and large electrical discharge machines, die-sinking electrical discharge machines, etc. are arranged, and workpieces are transferred from stock locations such as racks that store workpieces to one of the processing machine groups. The process of automatically loading the workpiece into the processing machine, setting it, processing the workpiece, and then transporting the workpiece from the processing machine is completely automated, and the workpiece can be handled unmanned day or night. It is desired to perform various types of processing continuously.

In addition, the FMNIS disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 120960/1983 has a limit to the number of workpieces that can be mounted on the circular station, and in order to prepare a large number of workpieces,
As the diameter of the circular station increases, there is a loss of floor space dedicated to the equipment itself for FM varnishing, and processing times differ between various processing machines, resulting in process waiting time. When a machine is present, there is a problem in that a time loss occurs in loading the workpiece onto the processing machine, and the cycle efficiency decreases.

In particular, it does not have any technical concept of automatically and accurately positioning a workpiece with respect to a processing machine.

The purpose of this invention is to solve the above-mentioned 111 problems, and to process a pallet with a workpiece set in advance using a wire electrical discharge machine, a small and large electrical discharge machine, a die-cutting and narrow-hole electrical discharge machine, etc. When transporting, loading and unloading is carried out using a stacker crane that moves back and forth along a traveling system between a processing machine group with a large number of EDMs (hereinafter referred to as EDM) installed and a stocking location such as a rack,
A setup indexing device for transporting the workpiece into and out of a positioning state during the traveling system, a rust prevention treatment device for applying rust prevention treatment to the workpiece, and a machining fluid attached to the surface of the workpiece;
A device is used to spray fluid to remove foreign matter, dust, etc.
transporting a commonly usable workpiece in a positioned state through each device of an intermediate transfer device for reciprocating between the stacker crane and the processing machine group to maintain the positioning state and deliver the workpiece; The idea is to provide a pallet on which the position of the workpiece is set in advance for loading and unloading, and by using this pallet, various types of processing on the workpiece can be fully automated, and the workpiece can be placed on the workpiece day or night. On the other hand, the objective is to enable a flexible manufacturing system for a group of processing machines that can continuously perform various types of processing unmanned.

[Means to solve the problem]

In order to achieve the above object, the present invention is configured as follows. That is, the present invention provides a cut-out hole that is wider than the machining area of each type of processing machine by cutting out the central part of the pallet body and allowing a workpiece to be placed in the machining area, and a cutout hole that is set at a predetermined position on the processing table of the processing machine. In order to set the workpiece at a predetermined position, a reference means provided on the pallet body that matches the processing reference means of the processing table provided on the processing machine, and a position predetermined from the reference means and the processing A fixing means provided on the pallet body outside the processing area of the machine, and a locking means provided on the pallet body that engages with a locking means of a loading/unloading device that reciprocates between the processing machine and the pallet loading/unloading station. The present invention relates to a pallet usable in a flexible manufacturing system having locking means.

Further, in this pallet, the reference means provided on the pallet main body are reference metal fittings provided on the front end surface and side end surface of the pallet main body.

Further, in this pallet, the fixing means includes a workpiece holder fitted and fixed in the cutout hole, a workpiece centering jig attached to the workpiece holder, and a clamp provided on the workpiece centering jig for fixing the workpiece. It has the following.

Further, in this pallet, the locking means provided on the pallet body is a recess formed in the pallet body, and the pin serving as the locking means of the loading/unloading device engages with the recess. It is.

Furthermore, in this pallet, the loading/unloading moving device includes:
Consisting of a stacker crane that reciprocates from a rack with a plurality of shelves along a travel path provided along each of the processing machine groups, and intermediate transfer devices that reciprocate between the stacker crane and each of the processing machines. This is what I did.

Further, in this pallet 7), the pallet loading/unloading station includes a rack equipped with a plurality of shelves having pallet loading/unloading openings, and a rack on which pallets are loaded and positioned in order to load/unload the pallets in a positioned state with respect to the stacker crane. A setup indexing device equipped with a pallet mounting stand, a rust prevention treatment device installed in the pallet traveling system to apply rust prevention treatment to the workpiece, or a fluid is sprayed to remove deposits attached to the surface of the workpiece. A fluid spraying device installed in the pallet traveling system is used for this purpose.

In addition, this pallet is moved back and forth between a wide variety of processing machines, a rack with multiple shelves for storing pallets, a processing stage run where workpieces are treated to prevent rust, and a pallet loading/unloading station. A flexible manufacturing system in which a pallet with workpieces set thereon is delivered to each of the processing machines while maintaining a positioning state using a pallet transport device, and the workpieces on the pallet are automatically electrical discharge machined by each of the processing machines. It was applied.

[Effect]

Since the pallet that can be used in the flexible manufacturing system according to the present invention is configured as described above, it operates as follows.

That is, in this pallet, a cutout hole is cut out in the central part of the pallet body wider than the machining area of each of the various processing machines, and the workpiece is placed in the machining area, so the pallet itself does not become an obstacle to machining. In order to set the pallet at a predetermined position on the processing table of the processing machine, a reference means that matches the processing reference means of the processing table provided on the processing machine is provided on the pallet body, so that the pallet can be set at a predetermined position on the processing table of the processing machine. Allows you to quickly position pallets. In addition, in order to set the workpiece at a predetermined position, the fixing means is provided on the pallet body at a predetermined position from the reference means and outside the processing area of the processing machine, so that it can be fixed depending on the type, size, etc. of the workpiece. Accordingly, the workpieces can be accurately set at predetermined positions on the pallet.

Furthermore, the pallet main body has a locking means that engages with a locking means of a loading/unloading device such as a stacker crane or an intermediate transfer device that reciprocates with the pallet loading/unloading station. Pallets can be set on the loading/unloading device accurately, quickly, and unattended.

Therefore, the pallet can be 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 reliably, quickly, and unattended. After the workpiece has been processed, it can be automatically and unmanned from the processing machine, transferred to the intermediate transfer device, and then carried out by the stacker crane from the processing machine group to an appropriate location.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a flexible manufacturing system (hereinafter referred to as FMS) that can use pallets according to the present invention will be described below with reference to the drawings. In this example of FMS, the processing machine group is applied to a group of electrical discharge machines such as a wire electrical discharge machine, a small and large electrical discharge machine, and a die-sinking electrical discharge machine. However, the present invention can be applied to other processing machines such as laser processing machines and water jet processing machines that process workpieces. In addition, the processing tank equipment is
It includes a machining tank that stores machining fluid, a machining tank cover device that prevents the machining fluid and machining debris from scattering, and a guard for safety. In addition, the workpiece here refers not only to the workpiece but also to the finished workpiece, and the processing machine itself is capable of not only processing but also assembly, final finishing, etc. be.

First, an outline of an embodiment of an FMS that can use a pallet according to the present invention will be explained with reference to FIGS. 1 and 2. This FMS is a wire electrical discharge machine 1 as shown in the figure.
, a processing machine group in which a fine and large electrical discharge machining machine 1!2 and a die-sinking electrical discharge machine 3 are respectively installed, a rack 4 equipped with a plurality of shelves 19 for accommodating workpieces W (barens) P set at predetermined positions, and a traveling machine. It has a stacker crane 6 that reciprocates along a passage 5, and an intermediate transfer device 7 that reciprocates between the stacker crane 6 and the processing machine group. Furthermore, this FMS includes a setup indexing device 9 equipped with a pallet mounting table 11 for mounting and positioning the pallet P, a rust prevention treatment device 10 for applying rust prevention treatment to the workpiece W, and a rust prevention treatment device 10 for applying rust prevention treatment to the workpiece W. A fluid spraying device 12 is provided for removing deposits such as machining fluid, foreign matter, and dust.

In this FMS, a wire electrical discharge machine 1 is shown in Fig. 1 as a processing machine (EDM) in which a large number of various types of processing machines are installed.
, one large-thin electrical discharge machine 2, and one die-sinking electrical discharge machine 113 are shown. Note that each processing machine has a filtering device 21 having a different function for each processing machine in order to filter and clean the processing liquid used in the processing machine.

In addition, in this FMS, in order to control the system with a controller (not shown), a control panel 13 for setup, indexing, and rust prevention treatment, an inventory management 814, a relay 115,
It is equipped with a switch box 16, a processing machine, a control device 22 provided at each of 2.3, and the like. The control device 22 inputs and outputs detection information to the controller and is controlled by the controller. Stacker crane 6
The traveling path 5 is provided with a mole rail 18 for reciprocating the stacker crane 6 and a protective shelf 17 for ensuring safety.

Furthermore, the controller (not shown) includes information on what kind of workpiece W is set in advance on the pallet P carried in and out through the setup indexing device 9, and the setup indexing device 9.
Information on the loading and unloading order of pallets P loaded and unloaded through
In each column 19, information on the baren (P) stored in the column 19, information on loading/unloading the workpiece into/out of the processing machine, information on the workpiece W being processed, etc. are stored. Based on the above information, the controller is previously inputted with information on what kind of machining machine is used to process the workpiece W.

In the operation of this FMS, for example, the steps from the planning schedule to the production of the setup schedule are configured as shown in FIG. 53. First, a planned schedule is created in the host computer, and the next planned schedule is also created. The planning schedule created by the host computer is sent from the host computer to the 11m computer in the FMS. The planned schedule received by the control computer is displayed on a display or the like, and changes or additional settings are made to the planned schedule. Next, for example, a daily schedule is created from the planned schedule. Here, as a simulation, −
A daily schedule is simulated, the load factor of each processing machine 1.23, a schedule for each processing machine, a setup schedule are created, and a work instruction sheet is created. After performing each of the above processes, the setup indexing device l! At 9, the setup indexing work is started.

Next, with reference to FIG. 3, another example of an FMSO in which the pallet according to the present invention can be used will be outlined. This FMS
In this embodiment, compared to the FMS embodiment described above, the number of installed wire electrical discharge machines 1, small and large electrical discharge machines 2, and die-sinking electrical discharge machines 3 in the processing machine group, the layout of these processing machines, and The systems perform similar functions except that the layout of each device is different. In this embodiment, one small electric discharge machine 2 for machining a predetermined start hole in a workpiece W using a pipe electrode PE is installed at a position opposite to a setup indexing device N9. On the other hand, five wire electric discharge machines 1 are installed in the figure, which machine the workpiece W into a predetermined shape by passing the wire electrode WE through a start hole formed in the workpiece W. In addition, four die-sinking electrical discharge machines 3 are installed in the figure for machining a workpiece W with die-sinking electrodes RE of various shapes such as a rod shape. That is, while the time required to machine a start hole in the workpiece W with the fine and large electrical discharge machine 2 is short, the time required to machine the start hole in the workpiece W with the wire electrical discharge machine 1 is short. It takes a long time to process a predetermined shape. Further, the time required for machining with the die-sinking electric discharge machine 3 is not the same as that with the wire electric discharge machine l, but it takes a certain amount of time.

Therefore, by installing the number of various processing machines according to the time required for processing the workpiece W,
It is possible to shorten the cycle time from the time when the workpiece W is carried in and attached to the processing machine until the time when the workpiece W is removed and carried out, and the process waiting time of the processing machine can be shortened, and cycle efficiency can be improved.

Next, a fourth embodiment of the pallet according to the present invention will be described.
This will be explained with reference to FIGS. 5 and 6. FIG. 4 is a plan view showing an example of a pallet according to the present invention, FIG. 5 is a cross-sectional view taken along line V--V in FIG. 4, and FIG. 6 is a cross-sectional view taken along line Vl--Vl in FIG. 4.

The pallet according to the present invention can be shared by each device in the FMS. That is, in the FMS, the pallet P is used to set various workpieces W in predetermined positions, and is made of a material such as stainless steel that has mechanical rigidity, electrical conductivity, and rust resistance. It is equipped with mounting reference means such as reference fittings having a common reference surface for various processing machines 1.2.3, and locking means such as recesses.

This pallet P is used to run the wire electrode WE.
The pallet main body 8 has a cutout hole 24 which is cut out in the center of the pallet body 8 to be wider than the machining area of each of the various processing machines, and into which a workpiece W can be placed with respect to the machining area. This pallet body 8
A workpiece holder 25, which is a fixing means that can set the workpiece W at a predetermined position, is fitted into the cutout hole 24 of. The workpiece holders 25 are prepared in many shapes, and each of the workpiece holders 25 has various cutout holes 34 formed in the center thereof to match the shape of the workpiece W. A workpiece setting jig 26 can be replaceably attached to the cutout hole 34 of the workpiece holder 25. Therefore, after fitting the workpiece W into the cutout hole 34 of the workpiece holder 25, the workpiece W can be fixed to the pallet P by tightening the clamp 27 provided on the workpiece setting jig 26.

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 body 8 of Valen) P is
To set the pallet P at a predetermined position in the height direction, that is, the X direction, and the horizontal direction, that is, the X and Y directions, with respect to the reference plane provided on the processing platform on the For example, in the height direction, the finished surface 28 of 2 m formed on both sides of the lower surface of the pallet P, and in the horizontal direction, the reference metal fittings 29 provided on the front end surface 29F of the pallet main body 8 of the pallet P. It can be constructed from a reference metal fitting 30 provided on one side 30S. The finished surfaces 28 are parallel to each other and have the same height. Furthermore, the reference fittings 29 and 30 are preferably made of a rust-proof and wear-resistant material such as ceramics or carbide, and are attached to the pallet body 8 so as to be replaceable. Reference surface 2 of reference fitting 29 provided on front end surface 29F
9 and the reference surface 30 of the reference fitting 3o provided on one side 30S.
and are orthogonal to each other, and each reference plane 29K.

30 and each finished surface 28 are orthogonal to each other.

In addition, the rotation center axis of the through hole 24 is perpendicular to each finished surface 28. In order to set it at a predetermined position in the horizontal direction, a reference surface 29K is formed as a reference means that matches a positioning stopper having a reference surface as a machining reference positioning means provided in wire electric discharge machining III. In addition, each positioning stopper provided in the processing machine group 1.23 is
It is preferable to make it from a rust-proof and wear-resistant material such as wood or carbide, and it is attached to the processing table so that it can be replaced.

The locking means of the pallet P is the pallet main body 8 of the baren) P.
A plurality of recesses are formed on the back surface of the .

That is, a common locking pin provided on the fork of the stacker crane 6 engages with the plurality of (two in the figure) three recesses. The plurality (two in the figure) of the recesses 33 are pin holes that are engaged by a common operating pin provided on the glue lid of the intermediate transfer device 7, and when the operating pin engages with the pin hole, the recesses 33 are pin holes. , Baren) P for each processing Ill, 2.
It can be pushed in or pulled out. Further, the plurality of (two in the figure) recesses 32 include the setup indexing device W9, the rust prevention treatment device IO, and the intermediate transfer device 7.
A common locking pin provided on the holder engages with the holder.

Next, each device that can be used on each side of the FMS that can use the pallet according to the present invention, that is, the rack 4, the setup indexing device 9, the stacker crane 6, the rust prevention treatment device 10, the fluid spraying device 12, and the intermediate delivery Device 7, processing table device for wire electrical discharge machining Ill and small hole electrical discharge machining 812, workpiece removal device 130 and processing tank device 79 for wire electrical discharge machine I, vibrator electrode exchange device 2C1 and die engraving for small hole electrical discharge machining 112 Each side of the machining table device, machining tank device 79, etc. of electric discharge machining 813 will be explained.

First, this FMS is provided with a rack 4. The rack 4 has a number of openings 20 along the longitudinal direction of the travel path 5 of the stacker crane 6 for the entry and exit of the barrens P, and the pallets P or workpieces W are placed in the openings 20. A large number of shelves 19 for storing preset pallets P are arranged in the vertical direction. Therefore, palette P
are stored on the shelf 19 by the operation of the stacker crane 6, or taken out from the shelf 19 to the stacker crane 6. A rust prevention treatment device 10 is installed in an appropriate opening 20 of the rack 4.
and a fluid spraying device 12 is arranged. An upper rail 48 is provided on the frame protruding from the upper part of the rack 4 toward the travel path 5 to guide the upper part of the stacker crane 6.
is installed.

Further, in this FMS, as shown in FIGS. 7, 8, and 9, a setup indexing device 9 is provided on the base 36 of the setup station.

FIG. 7 is a plan view showing an example of a setup indexing device that can be used in this FMS, FIG. 8 is a front view of FIG. 7, and FIG. 9 is a front end side view of FIG. 7.

At this setup station, as shown in FIG.
As a setup indexing operation, a setup schedule is created and setup for mounting a workpiece W on a pallet P is started. First, the stacker crane 6 is operated to unload an empty pallet P from the shelf 19 of the rack 4 to a setup station, and a workpiece W is attached to the pallet P. When the workpiece W is set on the pallet P at a predetermined position, the stacker crane 6 is operated again to store the barn P with the workpiece W set on the shelf 19 of the predetermined rack 4. Next, the pallet P with the workpiece W attached thereto is carried into a predetermined machining area 111.2.3 by the operation of the stacker crane 6, and is subjected to electric discharge machining. The pallet P on which the workpiece W that has been subjected to electrical discharge machining is mounted is again stored on the shelf 19 of a predetermined rack 4 by the operation of the stacker crane 6, or is carried out to the setup station. At the setup station, a command is issued to unload the pallet P on which the workpiece W that has been subjected to electrical discharge machining, which is housed in a predetermined shelf 19, is attached, and the stacker crane 6 is operated to transport the pallet P to the setup station. Carry it out. The work to remove the workpiece W from the pallet P is carried out, and the removed workpiece W, that is, the product, is carried to a predetermined location.The valet P, which has removed the workpiece W, operates the stacker crane 6 again and moves it to the rack. At the 0-setup station stored in the No. 4 shelf 19, the above operations are repeated.

In order to accomplish each of the above-mentioned operations, this setup indexing device 9 is capable of mounting and positioning the workpiece W on a barn (P) and transporting the pallet P into and out of the stacker crane 6 in a predetermined positioning state. In the figure, two 0 setup indexing devices 9 are provided, and for example, one setup indexing device 9 is configured exclusively for carrying in pallets P, and the other setup indexing device 9 is configured as a baren. It can be configured exclusively for carrying out P. Traveling trolley 37 of setup indexing device 9
The stacker crane 6 is reciprocated by a moving device 41 on a rail 35 arranged perpendicularly to the mole rail 18 of the travel path 5 along which the stacker crane 6 travels. In the figure, the moving device 41 is composed of a motor, a speed reducer, a sprocket 41S fixed to the base 36, a chain 41C hanging on the sprocket 41S, etc., but it may also be composed of a hydraulic cylinder or the like. can. On the traveling carriage 37, there are rotatable rollers 40 arranged around the periphery.
A pallet mounting base 11 is arranged rotatably about a rotation shaft 43 via the top. The pallet mounting base 11 can be released from a circular track member rotating on the roller 40 and a support member on the track member, and can rotate over 360' on the roller 40. Further, the rotation movement of the pallet mounting table 11 is configured so that it can be rotated into four equal parts by manual indexing or automatic indexing, and the origin of the rotation movement is confirmed by a limit switch or the like.

Further, a stopper pin 39 is provided on the traveling carriage 37, and the stopper pin 39 is configured to be able to be locked to a locking member 42 provided on the pallet mounting base 11. Therefore, if the stopper pin 39 is locked to the locking member 42, the traveling bogie 3
The rotational movement of the pallet mounting base 11 on the pallet mounting base 7 can be stopped. The pallet mounting base 11 is provided with a locking pin, which locks into a recess 32 formed in the pallet P.
Therefore, the positional relationship between the pallet mounting base 11 and the pallet P is positioned at a predetermined position. A pallet P is mounted on the pallet mounting base 11 via a cradle 38. A predetermined workpiece W is set on the pallet P at a predetermined position.

Since the setup indexing device 9 is configured as described above, the pallet P is mounted on the pallet mounting base ll with a forklift or the like, and the pallet mounting base 11 is rotated on the traveling trolley 37 by hand or with an appropriate rotation device. Then, the pallet mounting base 11 is rotated to a predetermined position with respect to the traveling trolley 37, and the locking member 42 of the pallet mounting base 11 is rotated to a predetermined position relative to the traveling trolley 37.
7, and the pallet mounting base 11 is stopped at a predetermined position on the traveling carriage 37.

Next, the moving device 41 is driven to move the traveling carriage 37 toward the traveling path 5 side. Therefore, the traveling trolley 37 waits,
When the stacker crane 6 moves along the travel path 5 and comes to the setup station, the pallet P on the pallet loading platform 11
is carried in by the forks of the stacker crane 6.

This FMS has a stacker crane 6 that reciprocates on a mole rail 18 on a travel path 5.

This stacker crane 6 has almost the same structure as the conventionally used one except for the structure of the fork.
A description of the same points as the conventional one, such as the hoisting device, will be omitted. The stacker crane 6 will be described below with reference to FIGS. 10 to 19. Fig. 10 is a schematic front view showing the stacker crane as a whole, Fig. 11 is a side view of Fig. 10, Fig. 12 is a perspective view schematically showing the stacker crane, and Fig. 13 is 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, and 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, FIG. 18 is an explanatory view showing the fork device in an extended state, and FIG. 19 is an explanatory view showing the fork device in a contracted state.

As shown in FIGS. 10 and 11, the stacker crane 6 includes a traveling cart 44 that reciprocates on a mole rail 18 provided with stoppers 6S at both ends of the traveling path 5 by driving a traveling device 57, and It has a mast 45 erected in the front-rear direction, an upper saddle 46 hanging over the upper end of the mast 45, and a hoisting device 47 attached to the mast 45.

In order to prevent the upper saddle 46 of the stacker crane 6 from swinging, guide rollers 49 provided on the front, rear, left and right sides of the upper saddle 46 are guided by the upper rail 48 provided on the rack 4 (FIG. 12).

Furthermore, as shown in FIGS. 13 and 15, a fork device 50 is provided on the traveling cart 44 of the stacker crane 6, and is operable to expand and contract on the left and right sides of the traveling path 5, and for placing the pallet P thereon. ing.

The fork device 50 is arranged on a fork base 51,
A carriage lever 52 is erected on the fork base 51 in the front-rear direction. Guide rollers 55 are rotatably attached to the upper portions of these carriages 52, and chains 54 are respectively hung on the guide rollers 55. Also,
As shown in FIGS. 12 and 13, a guide roller 56 is rotatably attached to the upper part of the carriage 52, the guide roller 56 is guided on the mast 45, and the carriage 52 swings as the carriage 52 moves up and down. to prevent The chain 54 is wound up and rewound by the loading bag f47, and has one end attached to the upper saddle 46 and is guided by a guide roller 53 attached to the upper saddle 46.

Therefore, when the chain 54 is hoisted or rewound by the operation of the hoisting device 47, the barrel lever 52 moves up and down, and the fork device 50 on the fork base 51 moves up and down.

Next, the fork device 50 will be explained with particular reference to FIGS. 16 to 19. FIG. 16 is an explanatory diagram showing an outline of a fork device and a drive device for the fork device, FIG. 17 is a sectional view showing details of the fork device, FIG. 18 is an explanatory diagram showing the fork device in an extended state, and FIG. 19 FIG. 2 is an explanatory diagram showing a contracted state of the fork device. The fork device 250 is configured to be extendable and retractable in order to place the pallet P thereon and carry it in and out. That is, the fork device 50 includes a proximal fork 58 fixed to a fork base 51, an intermediate fork 59 slidable on the proximal fork 58, a distal fork 60 slidable on the intermediate fork, and an intermediate fork 5.
It has a drive device 63 that telescopically slides the tip fork 9 and the tip fork 60. This fork device 50, in particular,
A locking pin 67A and a support pin 67B are provided at both ends of the tip fork 60. The locking pin 67A engages with a recess 31 formed in the pallet P, and the support pin 67B supports the lower surface of the pallet to maintain the horizontal state of the pallet P. Locking pin 6 of tip fork 60
7A engages with the recess 31 of the pallet P,
The pallet P can be accurately and reliably positioned on the tip fork 60 of the stacker crane 6. Therefore,
When the fork device 50 moves up and down and expands and contracts in the stacker crane 6, the pallet P is moved by the tip fork 60.
The tip fork 60 can be moved to a predetermined position together with the distal fork 60 while maintaining an accurately and reliably positioned state without moving on top.

Furthermore, a forward chain receiving member 62F and a backward chain receiving member 62R are fixed to the base end fork 58, respectively. One end of the forward chain 64F is connected to the forward chain receiving member 62F, and one end of the forward chain 64F is connected to the backward chain receiving member 6.
One end of the rearward side chain 64R is fixed to each of the chains 2R and 2R. The forward chain 64F is hooked on the forward sprocket 65F provided at the tip of the intermediate fork 59, and the other end of the forward chain 64F is attached to the proximal end 66 of the tip fork 60.
It is fixed at F. In addition, the retreating side chain 64R has a retreating side sprocket 65 provided at the tip of the intermediate fork 59.
R, and the other end of the retreating side chain 64R is fixed to the tip side end 66R of the tip fork 60. Also,
The drive device 63 rotationally drives a pinion 70 rotatably attached to the fork base 51 through a transmission device 7I. Further, a rack 61 is fixed to the lower surface of the intermediate fork 59 in a state extending in the longitudinal direction. This rack 6
1 is engaged with a pinion 70 attached to the fork base 51. Furthermore, guide grooves 72 and 73 are formed on both side surfaces of the intermediate fork 59. A guide roller 68 is rotatably attached to the distal fork 60, and a guide roller 69 is rotatably attached to the proximal fork 58. Since the guide roller 68 loosely fits into the guide groove 72 and guides the guide roller 68 through the guide groove 72, the tip fork 60 smoothly extends and contracts with respect to the intermediate fork 59. Further, since the guide roller 69 is loosely fitted into the guide groove 73 and is guided by the guide groove 73, the intermediate fork 59 can smoothly extend and contract with respect to the base end fork 58.

As described above, the fork device f50 is configured,
It works as follows. First, as shown in FIG. 18, when extending the tip fork 60 of the fork device 50, the drive device 63 is rotated in one direction, and the pinion 70 is rotated in the forward direction through the transmission device 71. . The rotational movement of the pinion 70 moves the rack 61 forward in the longitudinal direction. When the rack 61 moves forward in the longitudinal direction, the intermediate fork 59 moves to the forward side, that is, to the side where it extends with respect to the proximal fork 58. When the intermediate fork 59 extends, the sprocket 65F attached to the intermediate fork 59 is rotated by the chain 64F, thereby increasing the distance between the forward chain receiving member 62F and the sprocket 65F.
The distance between F and the proximal end 66F becomes shorter. Therefore, the tip fork 60 moves toward the forward side, that is, the side where it extends, relative to the intermediate fork 59. Therefore, the fork device 50 will extend the tip fork 60.

Further, as shown in FIG. 19, when retracting the tip fork 60 of the fork device 50, the drive bag 263 is rotated in the opposite direction to the above, and the pinion 70 is rotated in the backward direction through the transmission device 71. Exercise. pinion 7
A rotational movement of 0 causes the rack 61 to move toward the rearward side in the longitudinal direction. When the rack 61 moves to the rearward side in the longitudinal direction, the intermediate fork 59 moves to the rearward side, that is, the proximal fork 5
Move to the side that pulls in against 8. The retraction of the intermediate fork 59 is performed by the sprocket 6 attached to the intermediate fork 59.
5R is rotated by the chain 64H, thereby increasing the distance between the retreating side chain receiving member 62R and the sprocket 65R, and the distance between the sprocket 65R and the proximal end 65R is increased.
The distance to 6R becomes shorter. Therefore, the tip fork 60 moves toward the retreating side, that is, the retracting side, relative to the intermediate fork 59.

Therefore, the fork device 50 will retract the tip fork 60.

Therefore, if the stacker crane 6 is provided with a fork device 50 that telescopically moves with respect to one side of the traveling path 5 and a fork device 50 that telescopically moves with respect to the other side, the stacker crane 6 can move along the traveling path 5. A fork device 50 is provided that can extend and retract from both sides.

Alternatively, for the stacker crane 6, instead of providing the two telescoping fork devices 50, a fork device that rotates on the fork base 51 (not shown) may be provided, so that one fork device 50 can be used not only in both directions. , it is also possible to orient the fork device in a desired direction.

Therefore, the stacker crane 6 moves the fork device 50 up and down by the hoisting device 47, and also moves the fork device 50 up and down the traveling path 5.
By having a fork device 50 that can extend and contract in the left-right direction, the tip fork 60 of the fork device 50 can be extended to the bottom of the pallet P existing at a predetermined location,
Next, when the tip fork 60 is slightly raised, the locking pin 67A of the tip fork 60 engages with the recess 31 of the pallet P, and the lower surface of the barrel P is placed on the support pin 67B. If the tip fork 60 is retracted in this state, the pallet P can be positioned on the fork base 51.Next, the traveling device 57 is driven to move the traveling cart 44 of the stacker crane 6 to a predetermined position according to a command from the controller. , for example, the setup indexing device 9, each intermediate delivery device 7 of various processing machines 1.23, the rust prevention treatment device 10,
The fluid spray is transferred to the device 12 or to the shelf 19 of the rack 4. The fork device 50 is operated again to extend the tip fork 60 and move the baren) P to the location where it is to be reloaded. When the tip fork 60 is extended to the placement site of the barrel I-P, if the tip fork 60 is moved slightly downward, the locking pin 67A of the tip fork 60 that has been engaged with the recess 31 of the pallet P is released. do. 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 target location.

Therefore, this stacker crane 6 processes the pallets P received by the setup indexing device 9 through the rust prevention treatment device 10, the fluid spraying device 12, the rack 4, or various processing units 2.3.
It can perform the function of conveying the material to the intermediate transfer device 7. Alternatively, the stacker crane 6 can be used for various processing machines 1
, 2.3 receives the pallet P from the intermediate transfer device 7, and carries it to the intermediate transfer device 7 of another processing machine, or carries it out to the rack 4 or the setup indexing device 9. can perform the functions of (Hereinafter, this page margin) Also, this FMS
In this example, the rust prevention treatment apparatus 10 is installed at a rust prevention station provided in a pallet traveling system in order to apply rust prevention treatment to a workpiece W. Although the rust prevention stations may be installed anywhere in the pallet travel system, in the figure, two rust prevention stations are installed at the two openings 20 of the rack 4. This rust prevention treatment apparatus f10 will be explained with particular reference to FIGS. 2, 20, and 21. Figure 20 shows this FMS
FIG. 21 is a front view of a rust prevention treatment device that can be used for the purpose of the present invention, and FIG. 21 is a side view of FIG. 20.

Is this a rustproof bag? &10 is a pallet support member 23 that moves up and down guided by a support 4P installed in the rack 4.
The pallet support member 23 has a stacker crane 6
The pallet P is provided with a locking means that engages with a locking means provided on the pallet P so that the pallet P can be maintained in a predetermined positioning state. A frame 4F is fixed to the upper part of the support column 4P, and a drive device 10D that moves the pallet support member 23 up and down is set on the cough frame 4F. Further, at the bottom of the rack 4, a tank 10T with an upper opening is arranged, and the tank IOT contains a solution for performing rust prevention treatment. A rust remover solution for removing existing rust is contained in the tank 10T, and a rust preventive solution for preventing the formation of mackerel on the workpiece W is contained in the other tank 10T. In addition, in the tank IOT containing mackerel removal solution, in order to promote the rust removal effect,
For example, the guide roller 23G of the pallet support member 23 is preferably provided with means for applying ultrasonic vibration to the solution.
is moved up and down guided by guide means provided on the pillar 4P of the rust prevention station.

In addition, in this FMS, fluid spraying is performed by the device 12 to remove deposits such as machining fluid, foreign matter, and dust attached to the surface of the workpiece W.
It is installed in the pallet travel system to spray and eliminate fluids such as high-pressure air or high-temperature water. Although the fluid spraying device 12 may be provided at any location, in the figure, it is provided at the opening 20 of the rack 4 next to the rust prevention treatment device 10. This fluid spraying device 12 is used to clean the workpiece W carried into the FMS sufficiently to perform anti-corrosion treatment or electric discharge machining, and uses means for blowing out fluid such as high-pressure air or high-temperature water. In order to prevent the fluid from scattering, it is preferable to provide a shutter means for closing the opening 20. The shutter means is controlled to operate according to a command from a controller. When the pallet P is carried from the stacker crane 6 into the fluid spraying device 12, the shutter means is activated to open the shutter, and the barrel l-P is placed on the pallet support member 25P provided in the fluid spraying device 12. be done. This pallet support member 25P is provided with a locking means that engages with a locking means provided on the pallet P so that the barrel P can maintain a predetermined positioning state. When the pallet P is placed on the pallet support member 25P, the shutter is closed, and then fluid is blown out from the fluid blowing nozzle 12N of the device 12, and the workpiece W is cleaned. When the cleaning process for the workpiece W is completed, the shutter opens again and the stacker crane 6
The pallet P is carried out from the pallet support member 25P.

As mentioned above, the rust prevention treatment device 10 and the fluid spraying device 1
2 is configured as an example, but the operation of the device 10.12 is, for example, to drive the pallet P carried from the stacker crane 6 to the pallet support member 23 of the rust prevention treatment device 10. &10D is activated to pour the mackerel removal solution into the tank IOT to remove the mackerel generated on the workpiece W.Next, the pallet P is moved from the rust prevention treatment device 10 to the fluid spraying device 12 by the stacker crane 6. The fluid spraying involves blowing high-pressure air onto the surface of the workpiece W using the device 12 to blow away the rust removing solution attached to the surface.
Again, the stacker crane 6 moves the fluid spraying device E12 to the antirust treatment device 10, and puts it into the tank IOT containing the antirust solution of the antirust treatment device EIO, and sprays the fluid onto the workpiece W. In this case, when performing rust treatment, and immediately performing electrical discharge machining after the rust prevention treatment on the workpiece W, the pallet P is moved from the rust prevention treatment device 10 to the fluid spraying device 12 by the stacker crane 6, and the fluid is The spraying is performed by blowing high-pressure air onto the surface of the workpiece W using the device 12 to blow off the anti-rust solution adhering to the surface, and then using the stacker crane 6 to blow off the anti-rust solution attached to the surface of the workpiece W, and then using the stacker crane 6 to transfer it to the intermediate transfer device 7 of the processing machine group.
Transport to. Alternatively, after the anti-rust treatment, the pallet P on which the anti-rust treated workpiece W is placed is stored on the shelf 19 of the rack 4 by the stacker crane 6, or the pallet
.

2.3.

Next, wire electric discharge machining Ill among the processing machines in this FMS will be explained with reference to FIGS. 22 to 31. Fig. 22 is a side view of the processing table of the wire electric discharge machine, Fig. 23 is a front view of Fig. 22, Fig. 24 is a plan view of the processing table of the wire electric discharge machine, and Fig. 25 is the 24 26 is a side view of the other side of the processing table of the wire electric discharge machine, and FIG. 27 is a partial sectional view of the clamping device.
Fig. 28 is a perspective view of the processing tank cover device, and Fig. 29 is a perspective view of the processing tank cover device.
8 is a sectional view, FIG. 30 is a plan view of the processing tank cover device,
and FIG. 31 is a 30th side view.

In this FMS, the wire electrical discharge machine 1 includes an automatic wire electrode supply device, a wire electrode exchange device, and a workpiece removal device (No. 44 45), etc. can be provided. The wire electrical discharge machine l in this FMS has a mechanism for carrying pallets P in and out of the processing table 75, and a mechanism for loading and unloading pallets P onto the processing table 75, compared to conventional ones.
Since the tank bottoms are almost the same except for the fixing mechanism and the processing tank 76, the above-mentioned differences will be explained in particular.

The machining work of this wire electric discharge machine 1 is, for example, the 56th
It can be done as shown in the figure. Wire electrical discharge machine 1
When preparations for machining are 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 completes machining of the start hole accommodated in the shelf 19 of the wire electrical discharge machine 1 and 4. The pallet P is set in the wire electrical discharge machining machine Ill, where the pallet P is set with the workpiece W that has been machined, or the workpiece P is set with the workpiece W whose start hole has been machined with the small-sized electrical discharge machine 2. Then, the wire electric discharge machine 1 is activated to perform electric discharge machining on the workpiece W into a predetermined machining shape. When the wire electrical discharge machining is completed on the workpiece W, the pallet P carrying the workpiece W is stored on a predetermined shelf 19 of the rack 4 by the stacker crane 6, or is carried out to the base, that is, the setup station 36. Ru.

In the wire electric discharge machine 1, the workpiece W is placed on each pallet P.
The pallet P is automatically carried in and out by the intermediate transfer device 7 onto a processing table 75 fixed to a jig base 74 mounted on an X-Y table in an electrically insulated state. .

This wire electric discharge machine 1 includes a filtration device 21 for filtering the machining fluid used during electric discharge machining, and a pallet press for carrying the baren P from the intermediate transfer device 7 to the machining table 75 and pushing it into the machining table 75. A device 77, a clamp device 178 provided on the processing table 75 for fixing the pallet P on the processing table 75, and an openable/closable device provided in the processing tank 76 attached to the jig base 74 to prevent scattering of processing fluid. A processing tank cover device 79 with a slide cover 80 serving as a door is provided. A jig base 74 is fixed on the X-Y table in the wire electric discharge machine 1 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 inside the processing tank 76. Furthermore, a pair of processing tables 75 serving as position reference means are fixed to the upper surface of the jig base 74. These processing tables 75
The clamp devices 7 are located on both sides of the jig base 740.
8 and a pallet pressing device 77 are attached.

The processing table 75 in this wire electric discharge machine 1 is
This will be explained with reference to FIGS. The processing table 75 extends corresponding to both ends of the pallet P and is fixed to the jig base 74 so as to be able 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.
It is configured to move along with the horizontal movement of a table that is servo-moved by an NC device, and its positional relationship with respect to the running path along which the wire electrode WE runs is determined in advance. A guide roller 83A is provided at the entrance/exit portion of the processing table 75.

The connecting bars 82 on both sides, which are attached to the processing table 75 so as to be movable up and down relative to the processing table 75, have a large number of guide rollers 83 facing both sides of the pallet P in order to guide the pallet P when the pallet P is pressed. Each is fixed and rotatable. These guide rollers 83 function to smoothly move the pallet P with respect to the processing table 75. In other words, the connecting bar 82 is connected to the guide rollers 8 provided at both ends.
It is supported by 6A and can be moved up and down by the operation of cylinder 78C. In addition, at the upper end of the processing table 75,
A reference metal fitting 81, which is a positioning member, is set. The upper surface of the reference fitting 81 functions as a reference surface 81S. When loading and unloading the pallet P, 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 loading and unloading. .

Further, on each reference surface 29 and 30 of the reference fittings 29 and 30 attached to the pallet P, a pallet pressing device 77.77A is installed.
The positioning stopper 84.8 provided on the processing table 75 by
Pressed to 7. In this wire electric discharge machine 1, the pallet pressing device 77 that presses the baren (P) to a predetermined position in the forward direction of the processing table 75 is used to press the reference surface 29K of the baren (P) against the positioning stopper 84 provided on the processing table 75. , cylinders 86 provided on the processing table 75 are provided on both sides of the processing table 75. In addition, the pallet P is placed on the processing table 75.
The pallet pressing device 77A presses the reference surface 30K on the side surface of the pallet P to a predetermined position in the side direction of the processing table 7.
A cylinder 88 is provided on the processing table 75 in the front-rear direction of the processing table 75 in order to press against the positioning stopper 87 provided on the processing table 5.
have. These cylinders 86, 88 are double-acting cylinders in which fluid chambers are formed on both sides of the piston that reciprocates within the cylinder, and by introducing fluid into the fluid chamber on either side, the piston moves into the cylinder. 86.8
Move back and forth within 8.

The front end of the pallet P is moved to the positioning stopper 8 of the processing table 75.
4, one end of a cylinder 86 is rotatably attached to the processing table 75 at a pivot point 86P, and a pressing arm 91 is attached to the end of a piston rod 90 fixed to a piston in the cylinder 86. is mounted rotatably around a rotating shaft 65. Further, the pressing arm 91 is rotatably attached to a rotating shaft 66 attached to the processing table 75. Therefore, when the piston rod 9o extends from the cylinder 86, the end 94 of the pressing arm 91 pivots upward around the rotating shaft 66, as shown by the solid line in FIG. I will do it. On the other hand, if the piston rod 90 is retracted into the cylinder 86, as shown by the chain line in FIG.
The end portion 94 pivots downward around the rotating shaft 66, and the pallet P becomes ready for loading and unloading.

Further, in the pallet pressing device 77A that presses the side end of the pallet P against the positioning bar 87 of the processing table 75,
Piston rod 8 fixed to piston inside cylinder 88
The end portion of the pallet P is configured to be able to come into contact with one side of the pallet P. Therefore, when the cylinder 88 is actuated and the piston rod 89 starts to extend, the tip end surface of the piston rod 89 comes into contact with the side surface of the pallet P, presses the baren P in the side direction, and presses the reference metal fitting provided on the side surface of the pallet P. 300 reference plane 3
By bringing the 0K into contact with a positioning stopper 87 provided on the processing table 75, the baren) P can be positioned at a predetermined position on the side.

In addition, the finished surface of the lower surface of the baren) P, that is, the reference surface 28, is brought into contact with the reference surface 813 of the reference fitting 81 of the processing table 75,
When positioning the cylinder (ballen) P on the processing table 75, the cylinder 78C is operated in the opposite direction to the above, and the connecting bar 82
is moved downward, the upper surface of the guide roller 83 is lowered below the reference surface 81S of the reference fitting 81, and the guide roller 83
to prevent it from becoming an obstacle to positioning. Therefore, the finished surface of the lower surface of the ballen P, ie, the reference surface 28, is the reference metal fitting 81.
By contacting the reference surface 81S, the pallet P is accurately and reliably positioned in a predetermined height direction with respect to the processing table 75.

In addition, in this wire electric discharge machine 1, the pallet P is mounted on the work table 75 of the wire electric discharge machine 1 with a clamp device 7B.
is fixed by a plurality of clamps 85, and has edges on both sides pressed by the clamps 85. Regarding this clamping device 78, in particular, FIG.
It is shown in FIGS. 24, 26 and 27. This clamp device 78 is attached to the side of each processing table 75 via a bracket 78B, and has the function of fixing the baren (P) on the processing table 75 by being positioned opposite to each other on both sides of the pallet P. There is. The clamp device 278 is arranged on the side of the central part of the connection bar 82 and is attached to the bracket 78B.
A cylinder 78C1 is fixed to a processing table 75, a piston rod 78R1 is fixed to a piston 78P that moves up and down by the operation of the cylinder 78C, and a clamp 85 is attached to the upper end of the piston rod 78H and located above a connecting bar 82. have.

Further, the clamping device 78 is provided with a pallet fixing sensor and a pallet release sensor (not shown) in order to detect whether the cylinder 78C is activated and the baren) P is fixed or released on the processing table 75. There is. The upper end of the piston door 8H is a through hole 8 provided in the clamp 85.
The clamp 85 is fixed to the piston Ron door 8R by passing through the Nand 85N and screwing into the threaded portion formed at the upper end of the Piston Ron door 8R.

Therefore, when fluid is introduced into the cylinder 78C through the fluid passage, the piston 78P moves downward and the piston door 8R moves downward. Therefore, the clamp 85 fixed to the piston door 8H 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. Further, moving the clamp 85 of the clamp device 78 upward to release the fixation of the pallet P to the processing table 75 can be achieved by operating the cylinder 78C in the opposite direction.

In this wire electric discharge machine 1, the machining tank cover device 7
9 is particularly shown in FIGS. 28, 29, 30 and 31.

This machining tank cover device 79 is suitable for wire electric discharge machining I! The processing tank 7 attached to the jig base 74 on the X-Y table of
6, and functions to prevent machining fluid, machining debris, etc. from scattering when wire electrical discharge machining is performed on a workpiece W, or to function as a guard for safety. Processing tank cover device 79
is the cover 9 attached to the air cylinder 92 and the processing tank 76.
3. Consists of a manual opening/closing cover 94C1 arranged on the side surface of the cover 93 and pivotally connected to the cover 93, and a slide cover 80 that is slidable with respect to the cover 93 and constitutes an entrance/exit for the pallet 7)P. . Processing tank cover assembly W79
is equipped with an air cylinder 92 which is an actuator that slides a slide cover 80 for opening and closing the entrance/exit of the pallet P on which the workpiece W is set. Air cylinder 9
2 is a double-acting cylinder, and the cylinder is made of a non-magnetic material. A piston 95 made of magnetic material is disposed within the cylinder of the air cylinder 92, and the piston 95 is made of a magnetic material.
5 reciprocates within the air cylinder 92 by supplying air to either side of the piston 95 within the air cylinder 92. The slide cover 80 of the processing tank cover device 79 is located on the surface facing the pallet loading/unloading side of the intermediate transfer device 7. Regarding the reciprocating mechanism of the slide cover 80, an air cylinder 92 and a piston 95 that reciprocates within the air cylinder 92 are arranged below the processing tank cover device 79. This is achieved by supplying air to either one of the provided air passages 97. A cover guide 96 is fixed to the cover 93, and a guide roller 98 is attached to the cover guide 96. In addition, the slide cover 80 has a guide rail 9.
9 is fixed, and a guide roller 98 fits into the guide rail 99. Further, a bracket 80B is fixed to the lower end of the slide cover 80, and a bracket 80M, which is attached to a magnet, is fixed to the end of the bracket 80B. This bracket 8OB is attached to the air cylinder 9
The piston 95 is attracted to the magnetic material reciprocating within the air cylinder 2, and the piston 95 is reciprocated along the outer surface of the air cylinder 92. Therefore, when the piston 95 reciprocates within the cylinder, the bracket 80M adsorbing the piston 95 moves in accordance with the movement of the piston 95. Bracket 80M
If it moves back and forth, the bracket 80B moves back and forth.

The slide cover 80 is guided by a guide roller 98 provided on a cover guide 96 to reciprocate the bracket 80B.

In this processing tank cover device 79, the slide cover 8
0, an open end sensor 80F detects the open state of the slide cover 80 and a closed end sensor 80B detects the closed state of the slide cover 80. The open end sensor 80F and the closed end sensor 80E can be provided on the cover 93, the slide cover 80, or the air cylinder 92 as shown. Therefore, the slide cover 80 is detected by the open end sensor 80F.
is in the open state, and upon receiving the detection signal, the controller controls the pallet P located in the intermediate transfer device 7 to be moved onto the processing table 75 of the wire electric discharge machine l, or , ballen on the processing table 75)P
is controlled to be moved 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.

Furthermore, wire electrical discharge machining i in FMS according to the present invention
Regarding ll, in particular, the reference surface 81S1 which is the upper surface of the reference fitting 81 which is a positioning member arranged on the processing table 75
A reference surface 28 which is a finished surface formed on the back surface of the pallet P
, the reference surface 29F of the reference metal fitting 29 placed on the front end surface of the pallet P, the reference surface 30K of the reference metal fitting 30 placed on the side end surface of the pallet P, and the positioning stopper, that is, the reference metal fitting 84.87 provided on the processing table 75. Formed reference plane 843°8
In order to clean the reference surface 73, a reference surface cleaning device is provided. This reference surface cleaning device can be configured with a water jet nozzle that sprays water on the cleaning surface and an air spray nozzle that sprays air to eliminate fine machining debris generated during wire electrical discharge machining by the wire electrical discharge machine 1. do. Therefore, each reference surface can be cleaned every time the pallet P is set or at every predetermined period, so the setting of the pallet P on the processing table 75 is always reliable and does not adversely affect the processing accuracy.

As described above, the device for positioning the pallet P onto the processing table 75 in this wire electric discharge machine 1 is configured and can operate as follows. That is, wire electrical discharge machine 1
The slide cover 80 of the processing tank cover device 79 provided in the processing tank cover device 79 is opened, the cylinder 78C of the clamp device 78 is activated to raise the clamp 85, and the cylinder 86A is activated to raise the connecting bar 82. The rise of the connecting bar 82 causes the guide roller 83 to rise. 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, the upper surface level of the guide roller 83 is at intermediate transfer 12?, which will be described later. Glue lid 10
It is preferable that the level is the same as the top surface level of each roller provided at 0. Thereafter, the push-pull arm 101 of the lifter 100 is activated and moves forward to push the pallet P onto the processing table 75. Next, the lifter 1 of the intermediate transfer device 7
00 is slightly lowered, the actuating pin 170 provided on the push-pull-out arm 101 separates from the recess 33 formed in the pallet P, and then the push-pull-out arm 101 is retracted. At this time, the solenoid pulp of the cylinder 86A becomes a neutral position according to a command from the controller, and is lowered by the weight of the pallet P, and the connecting bar 82 and the guide roller 83 are lowered by the load of the pallet P. As a result, the lower surface of the pallet P comes into 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 activated to rotate the pressing arm 91 around the rotating shaft 66, and as shown by the solid line in FIG. 22, the pressing arm 91 presses the rear end of the pallet P for processing. It is pressed against the reference surface 84S of the positioning stopper 84 of the stand 74.

The front end surface of the pallet P is set in position by the action of the pallet pressing device 770, and then the cylinder 88 to the pallet pressing device 77 is operated to push the side end surface of the pallet P laterally with the piston rod 89, and the side end surface of the pallet P is Processing table 75
The side end surface of the baren (P) is pressed onto the reference surface 30K of the reference fitting 30 provided on the processing table 75 to set the position. After positioning the pallet P on the processing table 75 in this way, the clamp 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 processing table 75. If the pallet P is brought into contact with the state and fixed on the processing table 75, the pallet P can be set at a predetermined processing position on the processing table 75. Of course, all of these operating steps are configured to input each detection signal of each sensor to the controller, and based on the input signal, the controller issues an operating signal for the next step to operate a predetermined device. . Next, when the position setting of the pallet P on the processing table 75 is completed, the processing tank cover device 7
The slide cover 80 of 9 slides to close the loading/unloading entrance of the barrel I-P.

In this state, the wire electrical discharge machine 1 operates and the pallet P
After the automatic wire feeding device inserts the wire into the workpiece W set in advance, wire electrical discharge machining is started.

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 supply device cuts the wire, and then the machining tank cover device 7
9 operates, the slide cover 80 slides, and the pallet P
Open the loading/unloading entrance. Next, the pallet pressing device 77
is operated in the opposite direction to move the pressing arm 91 backward as shown by the chain line in FIG. 26, and the pallet pressing device 77A
is inactivated to eliminate the pressing force of the piston rod 89. Furthermore, the clamp device 78 is actuated to clamp the clamp 85.
and the guide roller 83 to lift the pallet P.
Then, the intermediate transfer device 7 operates to move the pallet P from the processing table 75 to the intermediate transfer device 7.

Also, wire electrical discharge machining! Regarding No. 1, when wire electrical discharge machining is performed on the workpiece W, machining waste or products machined into the machined shape are generated that are separated from the workpiece W. Unless these workpieces are automatically removed during electrical discharge machining in the wire electrical discharge machine 1, subsequent electrical discharge machining cannot be performed. Here, an example of a work piece removing device will be described with reference to FIGS. 44 and 45. FIG. 44 is a schematic front view showing an example of a work piece removing device attached to a wire electric discharge machine, and FIG. 45 is a side view of FIG. 44.

This work piece removing device 130 is equipped with an upper mounting member 131 and a lower mounting member 132 on the head IH of the wire electric discharge machine 1.
Fixed by A dog 133 is attached to the upper mounting member 131 to pass through and guide a ball opening 7 door 135 that moves up and down. This pole neck loft 135 has a ball spline groove 141 and a neck 1
42 is formed. The lower mounting member 132 is provided with a sliding member 62 that engages with the ball spline groove 141, is fixed in the rotational direction, and slides in the vertical direction.A gear 145 is fixed to the sliding member 62. .

This gear 145 has a gear 1 that meshes with the gear 145.
A gear 146 that rotates around the outer periphery of 45 over 270 degrees is engaged with the gear 146.

This gear 146 is fixed to a rotating shaft 148 rotatably supported by a support member 147 attached to the lower mounting member 132. Rotation of the rotating shaft 148 is performed by the operation of the servo motor 137, which is a second servo motor. Therefore, when the rotating shaft 148 is rotated by the servo motor 137, the gear 146 meshes with the gear 145, and the gear 145
or by rotating the gear 146, the gear 145 is rotated to rotate the ball rat rod 135.

Further, a ball screw 143 that engages with a screw 142 is attached to the lower attachment member 132.

A nut 149 is fixed to the NAND rotation support holder 53 which is attached to the lower mounting member 132 and fixed to the sliding member 62, and a worm wheel 144 is fixed to the nut 149 by meshing with the screw 141. The worm wheel 144 is rotated by the operation of a servo motor 136, which is a first servo motor attached to the lower mounting member 132. Therefore, when the worm wheel 144 is rotated by the operation of the servo motor 136, the sliding member 62 causes the ball screw rod 135 to move up and down. Furthermore, the servo motor 137 and the servo motor 136 operate, and the gear 1
45 and the worm wheel 144 rotate in synchronization, their rotational movements cancel each other out, resulting in a stopped state, and only the ball loft 135 rotates.

Furthermore, an electromagnetic holder case 138 is attached to the lower end of the ball-sleeping rod 135. A ball screw 150 is attached to this electromagnetic holder case 138, and a ball screw rod 139, which is a second ball screw rod, is provided with a screw 151 that meshes with the ball screw 150, and extends through the electromagnetic holder case 138. A ball spline 152 is formed on this ball screw rod 139. Furthermore, electromagnetic holder case 1
38 is provided with a servo motor 153, which is a third servo motor, in order to rotate a worm wheel attached to the ball screw 150. Therefore, servo motor 1
53 is activated and the worm wheel of the ball screw 159 rotates, the ball screw rod 139 reciprocates in the horizontal direction with respect to the 1iiiiff holder case 138. An electromagnetic holder 140 is attached to the tip of the ball nest loft 139, and a magnet of the ii electromagnet is attached to the aiT/ii holder 140.

Since this work piece removing device 130 is configured as described above, the ball screw rod 139 attached to the lower end of the ball screw rod 135 that moves vertically and rotates is integrally connected to the ball screw loft 135. Since the ball screw wand 139 itself can move horizontally with respect to the ball screw rod 135, the electromagnetic holder 140 attached to the tip of the ball screw rod 139 can move vertically and rotate in a three-dimensional manner. You will be able to move through space.

Therefore, the 1i magnetic holder 1 of this workpiece removal device 2130
The t magnet attached to 40 is connected to this work piece removing device 130.
By configuring it so that it protrudes from above, it can come into contact with the upper surface of the workpiece W positioned on the bullet P of the wire electric discharge machine 1. Therefore,
Immediately before the workpiece is separated from the workpiece W in response to a command from the controller, the workpiece removal device W130 is activated to bring the electromagnet into contact with the workpiece and attract the workpiece, thereby preventing the workpiece from falling. Not, then,! The workpiece attracted to the magnet 140 can be moved upward and stored in a predetermined workpiece storage location, and the workpiece separated from the workpiece W can be removed without damaging the machined surface.

Next, regarding small hole electrical discharge machining 1 and 2 in the processing machine group,
This will be explained with reference to FIGS. 32 to 36.

Fig. 32 is a plan view of the small and large electrical discharge machine, Fig. 33 is a side view of the vibrator electrode exchange device, and Fig. 34 is the line mx- in Fig. 32.
35 is a plan view of the index table, and FIG. 36 is a sectional view taken along line BB in FIG. 35.

Compared to the wire electrical discharge machine 1 described above, this fine electrical discharge machine 2 uses a pipe electrode PE to machine a workpiece W preset on a pallet P using wire electrical discharge machining. This is for machining a start hole for penetrating the WE, and for the device for positioning the pallet P on the machining table and the machining tank cover device, the same device as the wire electric discharge machine 1 can be used. It is something.

Therefore, here, a redundant explanation of the structure and operation of the above device will be omitted, and only the pipe electrode PE exchanging device and the pipe electrode PR setting device will be explained. Further, although it is possible to use the pipe electrode exchange device disclosed in the above-mentioned Japanese Unexamined Patent Publication No. 1-246021 for this FMS, the pipe electrode exchange device described below is preferable.

The machining operation of this small and large electric discharge machine 2 can be performed as shown in FIG. 55, for example. When the preparation for machining of the small and large electrical discharge machine 2 is completed, the controller issues a signal to the NC program and also issues a command to the stacker crane 6, so that the stacker crane 6 moves the small and large electrical discharge machine 2 to the small and large electrical discharge machine 2.
A small hole is used for transporting a pallet P loaded with a workpiece W to be machined into a predetermined shape by wire electrical discharge machining, which is housed in a shelf 19, into a small and large electrical discharge machine 2 for machining a start hole. When the hole P is set in the electrical discharge machining 1i2, the fine electrical discharge machining 112 is activated to perform electrical discharge machining of a fine hole in a predetermined location on the workpiece W.

When the electric discharge machining of the start hole on the workpiece W is completed, the barn P carrying the workpiece W is stored on a predetermined shelf 19 of the rack 4 by the stacker crane 6, or placed on the wire electric discharge machine 1. will be transported to.

This fine electric discharge machine 2 is equipped with a pipe electrode exchange device 2C. This pipe electrode exchange device 2C can use a conventionally used pipe electrode PE, and in order to index a large number of pipe electrodes PE, an index table 102 in which one index confirmation notch 102C is formed and a pipe electrode PE chuck pallet 105 that supports
have. This chuck pallet 105 is configured to be replaceable with respect to the index table 102. In the chuck pallet 105, support holes 103 for supporting the chuck portion PEC of the pipe electrode PE are formed at equal distances in the circumferential direction on a concentric circle from the rotation center point. The support hole 103 has a cutout groove 104 that opens outward in the radial direction to allow the pipe electrode PE to enter and exit. The notch groove 104 of the support hole 103 is formed on the chuck pallet 10.
5 and the center point of the support hole 103 are divided into states. The diameter of the support hole 103 is formed to be larger than the outer diameter of the inner tube (PEN) of the pipe electrode PE. The chuck pallet 105 is attached to the index table 1 in the center of the chunk pallet 105.
Mounting reference hole 108 to be attached to 02, said mounting reference hole 108
Equally divided tightening holes 106 (
(four in the figure) and an indexing origin confirmation hole 107 for confirming the indexing origin of the pipe electrode PE.

In addition, the center point of the chuck pallet 105 and the support hole 10
One tightening hole 106 and one indexing origin confirmation hole 107 are located on the line connecting the center points of 3. This index origin confirmation hole 1
07 is configured so that the index origin can be confirmed by matching with the index confirmation notch 102C of the index table 102.

This pipe electrode replacement equipment f2c is a chuck baren) 1
It has an indexing mechanism that indexes 05.

The indexing mechanism is composed of a stepping motor 109 and a reduction transmission device 110 installed between the stepping motor 109 and the chuck pallet 105. Further, the small and large electrical discharge machine 2 has a mechanism for inserting an electrode holder of a pipe electrode PR supported in a support hole 103 of a chuck ball (105) into its main shaft 111, and a mechanism for inserting an electrode holder into the support hole 10.
3 to the center position of the main shaft 111 of the fine electrical discharge machine 2. The center of this main axis 111 is the center of the pipe electrode PE and is the center point during processing. The above insertion mechanism is a pipe electrode exchange device 2.
The chuck pallet 105 provided at C is controlled by a vertical movement cylinder 112 that moves the chuck pallet 105 up and down. Further, a movement mechanism for moving the chuck pallet 105 to the center position of the main shaft 111 is provided by a longitudinal movement cylinder 113. This back-and-forth movement cylinder 113 has the function of moving the indexed pipe electrode PE to the center position of the main shaft 111 at the forward end, and retracting the chunk pallet 105 to the standby position at the backward end. Furthermore, this pipe electrode exchange device 2C has an index origin confirmation means for the chuck pallet 105 and a support hole 1.
The 6 index origin confirmation means, which has presence/absence confirmation means for confirming whether or not the pipe electrode PE is present at 03, is connected to the bottom of the tank by a photoelectric switch 114 attached to a frame 116 that supports the stepping motor 109. There is. The presence/absence checking means is a photoelectric switch 115 attached to the frame 116 that supports the stepping motor 109 and installed at the bottom of the tank to detect whether or not the pipe electrode PR is supported in the support hole 103 facing the center of the main shaft 111. ing.

As described above, this pipe electrode exchange device 2C has a tank bottom, so it can operate as follows. Small hole electrical discharge machining [1
When attaching the pipe electrode PE to the main shaft center 111 of No. 2, the stepping motor 109 is operated to rotate the chuck pallet 105, and the support hole 10 that supports the pipe electrode PE is activated by the photoelectric switch 114, which is an indexing origin confirmation means.
Next, the support hole 10 facing the spindle center 111 is determined by the photoelectric switch 115, which is the presence/absence checking means.
If the pipe electrode PE is supported in the support hole 103, the pipe electrode PE is moved to the main axis center 111 by the operation of the longitudinal movement cylinder 113.
move it to the position. Since a pipe electrode holder is provided on the main shaft of the fine and large electric discharge machining 112, the vertical movement cylinder 112 is operated to raise the indexed pipe electrode PE of the chuck pallet 105, and the pipe electrode holder 2H of the main shaft 111 is moved up. Insert into. When 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.

After inserting and fixing the pipe electrode PE into the pipe electrode holder 2H, the vertical movement cylinder 112 is operated to lower the chuck pallet 105, and then the chunk pallet 105 is lowered.
is moved back to the standby position I of the pipe electrode exchange device 2C by operating the back and forth movement cylinder 113.

In addition, when the pipe electrode PE is worn out by machining a start hole on the workpiece W, when removing the worn out pipe electrode PE from the main shaft 111 of the small and large electrical discharge machine 2, a chuck pallet is used. 105 support holes 10
3, confirm that the pipe electrode PR is not present using the photoelectric switch 115, which is a presence confirmation means, and move the support hole 103 to the center of the main shaft 111 to align the center of the support hole 103 with the center of the main shaft 111. , the exhausted pipe electrode PE is received in the support hole 103. At this time, the electrode holder P
Pass the pipe electrode PE remaining on the EH through the notch groove 104 of the support hole 103, and position the support hole 103 below the pipe electrode PE. Next, move the electrode holder PR of the main shaft 111
Release the holding state of H and insert the electrode holder PEH into the support hole 10.
3. Next, the vibe electrode replacement bag w, 2C
The ink pallet 105 is moved back to the standby position.

In this small and large electrical discharge machine 2, the above-mentioned pipe electrode exchange operation is automatically repeated, and a large number of pipe electrodes PE loaded on the chuck pallet 105 are replaced with consumable pipe electrodes PE.
By replacing the pipe electrode PE with a new one in the fine and large electric discharge machining 112, it is possible to automatically and continuously perform fine and large electric discharge machining on the workpiece W.

Note that the automatic attachment and detachment mechanism for the pipe electrode holder and pipe electrode PE in the fine and large electrical discharge machine 2 can use a conventional pipe electrode exchange mechanism, but for example, the mechanism disclosed in Japanese Utility Model Application Publication No. 1-143321 It is preferable to utilize a pipe electrode holding device which has a structure similar to that shown in FIG. Since the pipe electrode holding device is described in detail in Japanese Utility Model Application Publication No. 1-143321, its explanation will be omitted here.

(Hereinafter, this page margin) Next, the die-sinking electrical discharge machine 3 of the processing machine group in this FMS will be explained with reference to FIGS. 37 to 43. Fig. 37 is a plan view of the processing table part of the die-sinking electrical discharge machine, Fig. 38 is a front view of Fig. 37, Fig. 39 is a side view of the processing table part of the die-sinking electrical discharge machine, and Fig. 40 is the machining part. 41 is a front view of the processing tank shown in FIG. 40, FIG. 42 is a sectional view showing a part of the wall of the processing tank shown in FIG. 40, and FIG.
It is an explanatory view showing a part of mechanism of the opening/closing door of the processing tank.

In this FMS, the die-sinking electrical discharge machining 113 can be equipped with an automatic electrode exchange device, etc., as in the conventional machine. The die-sinking electrical discharge machine 3 in this FMS is
Compared to the conventional one, it is almost the same authority except for the mechanism for loading and unloading the ball (P) on the processing table, the mechanism for fixing the ball (P) on the processing table, and the processing tank, so in particular, the above The different devices will be explained. Furthermore, in the drawings, the same reference numerals are given to the die-sinking electrical discharge machining 113 as compared to the wire electrical discharge machining Ill to parts having the same functions.

The machining operation of this die sinking electric discharge machine 3 can be performed as shown in FIG. 57, for example. When the preparation for die-sinking electric discharge machining [13] is completed, the controller issues a signal to the NC program and also issues a command to the stacker crane 6,
A barn) P in which a workpiece W stored in the shelf 19 of a die-sinking electric discharge machine 3 and a rack 4 is set by the stacker crane 6, or a workpiece W which has been machined by a wire electric discharge machine l is set therein)P When Ballen) P is set in die-sinking electrical discharge machining 113, which performs the work of carrying in die-sinking electrical discharge machining I! 3 operates to electrical discharge machine the workpiece W into a predetermined machining shape. When die-sinking electrical discharge machining is completed on the workpiece W, the pallet P carrying the workpiece W is stored on a predetermined shelf 19 of the rack 4 by the stacker crane 6, or is carried out to the setup list rack 36. Ru.

In this die-sinking electrical discharge machining [13], the workpiece W is set in advance on each pallet P, and the pallet P is
Jig base 7 installed on the table in an electrically insulated state
Intermediate transfer device f7 to processing table 75 fixed to
It is automatically carried in and out by the lifting device 122. This die-sinking electric discharge machine 3 includes a filtration device 21 that circulates and filters the machining fluid used during electric discharge machining, and a pallet P from the intermediate transfer device 7.
pallet support member 120. Process the pallet support member 120! A lifting device 122 that moves the pallet P up and down by lifting it up and down inside the pallet support member 120, a clamp device 78 provided on the lifting device 122 to fix the pallet P on the pallet support member 120, and processing the pallet P that has been lowered by the lifting device 122. A pallet pressing device 1F77.77A that presses the end of the pallet P placed on the stand 75 to set the position, and processing attached to the jig base 74! A machining tank device 79K having an openable/closable door 80D for accommodating the machining fluid provided in the machining tank 76K is provided. A jig base 74 is fixed on the X-Y table in the die-sinking electrical discharge machine 3 in an electrically cut-off state, and a machining process N 76 is performed on the jig base 74.
K is installed.

Further, a pair of processing tables 75 serving as position reference means are fixed to the upper surface of the jig base 74 or the bottom wall 67.

The jig base 74 is provided with clamp devices 78 located on both sides of the processing table 75. The processing table 75 includes a pallet pressing device 77 for fixing the pallet P carried in at a predetermined position.

77A is installed. The pallet support member 120 includes a piston rod 82 that moves up and down within the cylinder 121.
These are support rollers (three on each side are shown in the figure) attached to a connecting bar 82 fixed to P. Each of the connecting bars 82 is connected to a pallet pressing device 77, 77A for pressing the pallet P.
Guide rollers 126 are provided to guide the side and top surfaces of the pallet P during positioning.

The processing table 75 in this die-sinking electrical discharge machine 3 extends and is fixed to the jig base 74 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.
It is configured to move in the horizontal direction along with the horizontal movement of the table that is servo-moved by the device, and the positional relationship with respect to the travel path along which the engraving electrode RE moves up and down is determined in advance. Connecting bars 8 on both sides attached to the lifting device 122 so as to be movable up and down with respect to the processing table 75
2, when pressing the pallet P, the baren) P is placed on the processing table 75.
In order to fix the pallet 10 upwardly, clamps 85 facing each other are fixed to both sides of the pallet 10 so as to be movable up and down.

This elevating device 122 has two cylinders 121 provided in the front-rear direction and two cylinders 121 in the left-right direction.In each cylinder 121 on both sides, each connecting bar 82 arranged on both sides is connected to a bracket 82B. It is installed through.

Each connection bar 82 has cylinders 121 provided at both ends.
It can be moved up and down by the operation of . The vertical stroke of the connecting bar 82 is configured to be large,
This ranges from the height at which the pallet P is carried in and out of the intermediate transfer device 7 to the height at which the die-sinking process is 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 at both bases of the processing table 75 extending upward on both sides. A pinion 124 that moves up and down is engaged with each rack 82R. Therefore, when the connecting bar 82 moves up and down due to the operation of the four cylinders 121, the pinion 124 engages on the rack 82R and moves up and down, so the bracket 82B, which moves up and down due to the operation of the four cylinders 121, operates synchronously. However, the connecting hook 82 can now move up and down in a horizontal state.

In this die-sinking electrical discharge machine 3, when a pallet P is loaded or unloaded, the connecting bar 82 is slightly moved upward by the operation of the cylinder 121 to release the fixed state of the pallet P in the clamp 85, and the pallet P is loaded and unloaded by the intermediate transfer device 7. The pallet P from the intermediate transfer device W7 can be carried in. Furthermore, a reference fitting 81 for vertical position setting, which is a positioning stopper, is attached to the upper end of the processing table 75, that is, the base (FIG. 38).The upper surface of the reference fitting 81 functions as a reference surface 81S. do. Lower the pallet P onto the processing table 75 using the lifting device 122, bring the reference surface 28 on the lower surface of the barrel l-P into contact with the reference surface 81S of the reference fitting 81 of the processing table 75, and move the pallet P onto the processing table. When setting the pallet P on the pallet 75, the cylinder 121 is actuated, the clamp device 78 is actuated, and the pallet P is pressed downward by the clamp 85. Therefore, the finished 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 fitting 81, and the pallet P is accurately and reliably positioned in a predetermined height direction with respect to the processing table 75. That will happen. In addition, a part of the connecting bar near the reference surface 28 has a magnet 125 which is pressed toward the pallet P side by the spring force of the spring and can be sunk in against the spring force when pressed in the forward direction.
is installed. The magnet 125 is connected to the cylinder 1
It has a function of preventing the position of the pallet P from shifting when the clamping device 78 is activated by moving the pallet P.

Furthermore, in this die-sinking electrical discharge machining 113, pallet pressing devices 77, 77 are provided on the reference surfaces 29 and 30 of the pallet P.
A positioning stopper 84 provided on the processing table 75.
87 is pressed. The pallet pressing device 77 that presses the pallet P to a predetermined position I in the forward direction of the processing table 75 presses the reference surface 29 of the baren +-p against the positioning stopper provided on the processing table 75, that is, the reference surface 84S of the reference fitting 84. , cylinders 86G provided on the processing table 75 are provided on both sides of the processing table 75. Also, a pallet pressing device 7 that presses the pallet P to a predetermined position in the side direction of the processing table 75
7A, the reference plane 30K on the side of the pallet P is placed on the processing table 75.
The positioning stopper provided on the reference surface 8 of the reference fitting 87
7S, a cylinder 88 is provided on the processing table 75 in the front-rear direction of the processing table 75. In these cylinders 86C and 8B, fluid chambers are formed on both sides of the piston that reciprocates within the cylinder, and when fluid is introduced into the fluid chamber on either side, the piston moves into the cylinder 8.
Moves back and forth within 6C and 88.

In the pallet pressing device 77 that presses the side end of the pallet P against the reference fitting 84 of the processing table 75, the end of the piston rod 90 fixed to the piston in the cylinder 86C is configured to be able to come into contact with one side of the pallet P. has been done. Therefore, when the cylinder 86C operates and the piston rod 90 starts to extend, the tip end surface of the piston rod 90 comes into contact with the rear end surface of the pallet P, presses the pallet P in the front direction, and attaches the reference metal fitting provided on the front surface of the pallet P. The pallet P can be positioned at a predetermined position in front by bringing the reference surface 29S of the pallet P into contact with the reference surface 84S of the reference fitting 84 provided on the processing table 75.

In addition, the reference plane 30K of the side end of the pallet P is connected to the processing table 75.
In the pallet pressing device 77A, which is pressed against the positioning stopper, that is, the reference fitting 87, the end of the piston rod 89 fixed to the piston in the cylinder 88 is pressed against the pallet P.
It is configured so that it can be brought into contact with one side of the. Therefore, when the cylinder 88 operates and the piston rod 89 starts to extend, the tip end surface of the piston rod 89 comes into contact with the side surface of the pallet P, presses the pallet P in the side direction, and pushes the reference metal fitting 30 provided on the side surface of the pallet P. By bringing the reference surface 30K of the machine into contact with a positioning stopper 87 provided on the processing table 75, the baren) P can be positioned at a predetermined position on the side.

In addition, in this die-sinking electrical discharge machine 3, the pallet P is
It is fixed to the processing table 75 of the die-sinking electric discharge machining 113 by a plurality of clamps 85 of a clamp device 78, and has edges on both sides that are pressed by the clamps 85.

The clamp device 78 includes four cylinders 121 and piston rods 82P and i that move up and down by the operation of the cylinders 121.
It consists of a connecting bar 82 on both sides fixed via a bracket 82B attached to a piston wand 82P, and a clamp 85 attached to the center of the connecting bar 82. Further, in order to smoothly move the connecting bar 82 up and down, a guide column 82G is fixed to the processing table 75. The clamp device 78 includes a device for detecting that the cylinder 121 is activated to fix or release the baren (P) onto the processing table 75.
Although not shown, a pallet fixing sensor and a pallet release sensor are provided.

In order to fix the pallet P on the reference fitting 81 of the processing table 75 using the clamp 85, fluid is introduced into the cylinder 121 through the fluid passage and the piston is moved downward.
Piston rod 82P moves downward. Therefore, the clamp 85 attached to the piston rod 82P via the bracket 82B and the connecting bar 82 moves downward. The downward movement of the clamp 85 presses the baren (P) onto the processing table 75 and fixes the baren (P) on the processing table 75. Also, in order to move the clamp 85 of the clamp device 78 upward to release the fixation of the baren) P to the processing table 75,
This can be achieved by operating the cylinder 121 in the opposite direction.

In this die-sinking electrical discharge machine 3, the machining tank device 79K is particularly shown in FIGS. 40, 41, 42, and 4.
This is shown in Figure 3.

This machining tank device 79 has a machining device attached to a jig base 74 on the X-Y table of the die-sinking electrical discharge machine 3. 76K, and is filled with machining fluid when die-sinking electrical discharge machining is performed on the workpiece W. The machining tank 76 is formed in a sealed structure to be filled with machining fluid, and the upper part is open, and a notch opening 80A is provided for carrying in and out the barrel P with the workpiece W set on the upper part. Front wall 76F, rear wall 76
It is composed of R1 side walls 76S and a bottom wall 76B which is a sub-base attached to the jig mousse 74. The notch 80A of the front wall 76F is configured to be closed by an openable/closeable door 80D. Processing tank device 7
9 includes the above-mentioned walls forming the processing tank 76K and the front wall 7.
Opening 80A formed on the 6th floor for loading and unloading pallets P
, a front wall 76F for sealing or opening the opening 80A.
Opening/closing 1i'180D that can be moved downward when opening against
, a cylinder 92A for vertically moving the opening/closing R80D.
, and a vertical movement mechanism that moves the opening/closing 180D up and down 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. A cylinder 92A attached to the upper end, a piston loft 95P fixed to a piston that reciprocates in the vertical direction within the cylinder 92A, and the piston loft 95P.
It consists of a bracket 92B attached to the lower end of the door 80D and fixed to the lower part of the opening/closing door 80D.

That is, the cylinder 92A and the piston loft 95P function as an actuator that moves the opening/closing JR80D up and down.

Furthermore, in the vertical movement mechanism of opening/closing 1 ft 180D, the guide column 127 performs the function of guiding the opening/closing door ROD,
The guide groove 118 formed in the guide column 127 has guide rollers 117 provided at the top and bottom of both sides of opening/closing #80D.
(Fig. 43), and the guide column 127 is engaged (Fig. 43).
A bracket 76B is fixed to the bracket 76B.
A cylinder 80C that operates a piston loft 80P is fixed to the cylinder 80C (Fig. 42). When the piston loft 80P protrudes due to the operation of the cylinder 80c, the tip of the piston loft 80P opens and closes! When the opening 80A of the front wall 76F is closed by the opening/closing door 80D, the piston loft 80P is activated by operating the cylinder 80C. Open/close door 80D with front wall 76
Press it against the front of F. In addition, the opening/closing door 80D and the front wall 7
A sealing material 80S is arranged between the opening and closing door 80 and 6F.
Since D and the front wall 76F contact each other in a sealed state, it is possible to prevent the machining fluid in the machining tank 76 from scattering or leaking.

This processing tank bag f79K is provided with an open end sensor for detecting the open state of the door 80D and a closed end sensor for detecting the closed state of the door 80D.

The open end sensor and the closed end sensor can be provided on the front wall 76F1 opening/closing door 80D, the cylinder 92A, or the like. Therefore, the opening/closing door 80D is detected by the open end sensor.
Upon receiving the detection signal, the controller transfers the pallet P located in the intermediate transfer device 7 to the pallet support member 120 of the die-sinking electrical discharge machine 3.
The pallet P on the processing table 75 is controlled to be moved upward along with the pallet support member 120 to the intermediate transfer device 7, and the closed state of the opening/closing door 80D is detected by a closed end sensor. In response to the detection signal, the controller injects machining fluid into the machining M76K and controls the die-sinking electrical discharge machine 3 to operate.

As mentioned above, the processing table 7 in this die-sinking electrical discharge machine 3
The device for positioning the pallet P onto 5 is constructed so that it can operate as follows. First, in order to open the opening/closing door 80D of the machining tank device 79 provided in the die-sinking electric discharge machining 113, the cylinder 92A is activated to extend the piston loft 95P downward, and the opening/closing 180D is lowered to open the opening 80A. .

On the other hand, the pallet support member 12 is moved by operating the lifting device 122.
0, the cylinder 12 of the clamping device 78
1 to extend the piston loft 82P and raise the connecting bar 82. The rise of the connecting bar 82
-P is the pallet support member 1 located above the processing table 75
20 so that it can be transported. The push-pull arm 1 of the lifter 100 feeds the pallet support member 120 onto the pallet support member 120 by the lifter 1°O of the intermediate transfer device 7.
01 is actuated and moves forward to push the pallet P onto the pallet support member 120.Next, the lid 100 of the intermediate transfer device 7 lowers slightly, and the locking pin 7P provided on the push-pull arm 101 pushes the pallet P onto the pallet P. The push-pull arm 1 of the lifter 100 separates from the formed recess 33, and then the push-pull arm 1 of the lifter 100
01 to the intermediate transfer device 7 side. Thereafter, the cylinder 121 of the lifting device 122 is operated to lower the pallet support member 120 on which the pallet P is mounted onto the processing table 75. When the pallet support member 120 moves up and down, the magnet 125 attached to the connection bar 82 is pushed out toward the pallet P by the 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 aligned with the processing table 75.
The reference metal fitting 810 is brought into contact with the reference surface 81S.

In this state, the pallet pressing device 77 is operated to extend the piston rod 90 and press the rear end of the pallet P against the positioning stopper of the processing table 75, that is, the reference surface 843 of the reference fitting 84.

The front end surface of the pallet P is set in position by the action of the pallet pressing device 77.Next, the cylinder 88 of the pallet pressing device 77A is actuated to push the side end surface of the pallet P laterally with the piston rod 89, and the front end surface of the pallet P is set in position. The reference metal fitting 300 and the reference surface 30S on the side end surface are attached to the reference metal fitting 8 provided on the processing table 75.
7, and position the side end surface of the baren) P on the processing table 75. After the pallet P is positioned on the processing table 75 in this way, the clamp device 78 is activated to lower the clamp 85 slightly, and the pallet P is pressed against the processing table 75 by the clamp 85, and the lower surface of the baren P is The reference surface 28 is the reference surface 81 of the reference fitting 81 of the processing table 75.
The ballet z)P is fixed on the processing table 75 by bringing it into contact with S in a pressed state. Therefore, the ball +-p can be set at a predetermined processing position on the processing table 75. Of course, all of these operating steps are configured to input each detection signal of each sensor to the controller, and based on the input signal, the controller issues an operating signal for the next step to operate a predetermined device. . Next, when the position setting of the ball I-P on the processing table 75 is completed, the processing tank device 79A
The cylinder 92A operates to raise the opening/closing door 80D, and the opening 80A of the front wall 76F is closed by the opening/closing door 80D.
Close the loading/unloading entrance for pallet P.

In this state, the machining tank 76 is filled with machining fluid, and the die-sinking electric discharge machine 3 is operated to start die-sinking electric discharge machining on the workpiece W set in advance on the pallet P. 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 76 is discharged, and then the cylinder is transferred to the machining tank device 79. 92A operates to lower the opening/closing door 80D and open the opening 80A.
to open the loading/unloading entrance for baren) P. Then,
Piston rod 90 of pallet pressing device 77.77A.
89 is made inactive and moved backward.

Furthermore, the cylinder 121 of the lifting device 122 is operated to raise the pallet support member 120, and the pallet P is raised.Then, the lifter 100 of the intermediate transfer device 7 is operated to move the pallet P from the pallet support member 120 to the intermediate transfer device. Move it to the 7 side.

Next, in the FMS in this processing machine group, in order to perform a pallet P delivery operation between each processing machine 1, 2.3 and the stacker crane 6, an intermediate The delivery device 7 will be explained with reference to FIGS. 46 to 52. 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.
The figure is a plan view of Fig. 48, Fig. 50 is a side view of Fig. 48,
Figure 51 is a front view of the lower part of the intermediate transfer device and Figure 52 is a front view of the lower part of the intermediate transfer device.
The figure is a plan view of FIG. 51.

This intermediate transfer device 7 mainly consists of a cart 163 equipped with rollers 162 that can reciprocate on a slide rail 161 laid on a base 160, and a frame 16 of the cart 163.
A locking pin that engages with a recess 32 formed in the pallet P on the front end side is provided at the upper end of the frame 164 of the truck 163, which has a push-out arm lOl provided on the lid 100 and the lifter 100. A pallet seat portion 168S is provided on the rear end side of the pallet plate 168, on which the lower surface of the baren (P) is seated.

The base 160 has a trolley 16 fixed to the moose 160.
A cylinder 159 serving as a driving device for No. 3, the cylinder 159
A piston rod 172 that reciprocates therein, a truck 163 with rollers 162 fixed to the piston rod 172, and a slide rail 161 laid on a base 160 for the truck 163 to run under the action of a cylinder 159 are provided. This 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 trolley 163 includes a trolley frame 164 that reciprocates on the base 160, a receiving member 173 of a baren (P) formed on the upper surface of the trolley frame 164, a locking pin 168 protruding from the upper surface of the receiving member 173, and the frame. It has a lifter 100 that is mounted on the top and can move up and down. Two receiving members 173 are arranged above and parallel to the slide rail 161. The upper surface of the number receiving member 173 is finished, and the surfaces formed by the number receiving member 173 are configured to be on the same level, and are also configured to be parallel to the moving surface formed by the slide rail 161. has been done.

The lifter 100 is arranged between receiving members 173,
A cylinder 166 fixed to the frame 164, a piston rod 169 that reciprocates within the cylinder 166, and a lid frame 165 fixed to the 16 piston rods.
and a push-pull arm 101 mounted on the lifter frame 165. Therefore, the push-pull arm 10
1 provides a slide mechanism in which a fork-like arm 171 can be moved 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 a cylinder 166.

The push-pull arm 101 of the lifter 100 has a cylinder 167 fixed to a lifter frame 165, a piston rod 172 that reciprocates within the cylinder 167, and a fork-like arm 171 fixed to the piston rod 172.

A pallet P
Actuating pins 170 that engage with the recesses 33 are formed on both sides.

This intermediate transfer device 7 is constructed as described above and operates as follows. In the intermediate transfer device 7, the reciprocating movement of the cart 163 on the slide rail 161 is performed by a cylinder 159, the vertical movement of the lifter 100 is performed by a cylinder 166, and the forward and backward movement of the push-pull arm 101 is performed by a cylinder 167. However, each drive is interlocked.

First, the cylinder 159 is actuated to move the truck 163 toward the stacker crane 6 side, that is, toward the travel path 5 side. A stacker crane 6 carrying a predetermined pallet P 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 baren) P placed on the tip fork 60 is transferred to the intermediate transfer device 7.
The barrel P is placed so that the recess 32 of the ball P is engaged with the locking pin 16B provided at the upper end of the frame 164 of the trolley 163.

Next, the cylinder 166 of the lifter 100 of the intermediate transfer device 7 is activated, and the lifter frame 165 is raised.
An operating pin 170 formed on the push-pull arm 101 provided on the lifter 100 engages with a recess 33 provided on the pallet P. Furthermore, as the lifter 100 rises,
The locking pin 168 provided at the upper end of the frame 164 separates from the recess 32 of the barrel (P). Therefore, the pallet P is placed on the push-pull arm 101 with the operating pin 170 and the recess 33 engaged, and in this state, the cylinder 167 is activated and the push-pull arm 1O1 is moved to the processing machines 1, 2.
．． Move forward to the third side. As the push-pull arm 101 moves forward, the pallet P is carried into the pallet support member on the processing table 75 for processing 1!1, 2.3. The lifter 100 is slightly lowered by the operation of the cylinder 166, and the operating pin 170 provided on the push-pull arm 101 moves into the recess 3 of the pallet P.
Leave from 3. Here, the cylinder 167 is actuated to retract the push-pull arm 101 toward the intermediate transfer device 7 and move it backward. Carriage 163 in intermediate transfer device 7
waits on the machine 1°2.3 side until the machine 1, 2.3 completes electrical discharge machining on the workpiece W.

Next, when the electrical discharge machining on the workpiece W is completed in the processing machines 1, 2.3, a signal indicating the end of the machining is received from the controller, and the slide cover 80, which is the opening/closing door of the EDM, is opened.
After the opening/closing 1it80D is completely opened, the cylinder 167 of the push-pull-out arm 101 is activated, and the push-pull-out arm 101 moves forward toward the processing machine 12.3. When the push-pull arm 101 is inserted below the pallet P, the lifter 1
The cylinder 166 of 00 operates to raise the push-pull arm 101 mounted on the lifter 100. The operating pin 170 of the push-pull-out arm 101 engages with the recess 33 of the pallet P, and the pallet P becomes mounted on the push-pull-out arm 101. Here, the cylinder 167 is actuated and the push/pull arm 101 is retracted toward the intermediate transfer device 7 and retreated. The push-pull arm 101 is the intermediate transfer device 7
When the lifter 100 reaches a predetermined position on the truck frame 164, the cylinder 166 is activated and the lifter 100 is lowered.

As the lifter 100 descends, the push-pull arm 101 is lowered, and the pallet P mounted on the push-pull arm 101 is lowered, and the locking pin 168 provided on the trolley frame 164 engages with the recess 32 of the pallet P. While being placed on the cart frame 164, the operating pin 170 of the push-pull arm 101 is inserted into the recess 33 of the pallet P.
depart from. The push-in/pull-out arm 101 further descends and stops at a predetermined lower position of the truck frame 164.

Furthermore, the cylinder 159 is operated and the truck 163 is moved to the rail 1.
61 to the stacker crane 6 side. The fork device 50 of the stacker crane 6 operates and the tip fork 6
0 begins to extend, and the tip fork 60 is positioned below the pallet P. As the tip fork 60 rises slightly, the tip fork 60 lifts the pallet P, and the locking pin 67A provided on the tip fork 60 engages the recess 3 of the pallet P.
1, and the lower surface of the baren) P is connected to the support pin 67.
The locking pin 168 of the cart frame 164 is disengaged from the recess 32 of the pallet P. Fork device 5
0 operates and the tip fork 60 retracts to move the pallet P onto the stacker crane 6.

Further, the FMS in this group of processing machines is bottom-bottomed as described above, and the fluid circuits for operating each cylinder in this FMS are bottom-bottomed as follows, for example.

To explain an example of each cylinder of the wire electric discharge machine 1 and the intermediate transfer device 7, on the wire electric discharge machine Ill side, fluid from a fluid pressure supply source such as a pump is passed through a fluid pressure adjustment device, a fluid switching valve, etc. Each cylinder 7
Fluid pressure is supplied to 8C, 86, 88, and 92 (the cylinder 92 of the slide cover 80 may be an air cylinder). Regarding the intermediate transfer device 7 side, fluid from a fluid pressure supply source such as a pump is supplied to each cylinder 159, 166.1 through a fluid pressure adjustment device, fluid switching valve, etc.
67 is supplied with fluid pressure. Fluid is supplied to each cylinder, and the piston within each cylinder reciprocates, whereby the operating state of each cylinder is detected by each sensor. The detection signals detected by each sensor are input to the controller, and the controller responds to each detection signal and issues a command according to the operation process that has been input in advance as a sequence to the wire electrical discharge machine 1 and the intermediate transfer device. 7 to carry the pallet 10 into and out of the wire electrical discharge machine 1,
It is also carried in and out of the intermediate transfer device W7.

The above describes an example of the fluid circuit for the wire electrical discharge machining Ill and the intermediate transfer device 7.
A similar fluid circuit can be applied to the rust prevention treatment word W10 and fluid spraying in the device 12 as well.

In addition, in the flexible manufacturing system of this processing machine group, it is of course possible to provide a reference surface cleaning device for cleaning the reference surface of the reference member of each processing table and the reference surface of the baren P. . If the reference surface cleaning device is provided, the reference surface of each processing table on which the pallet P is set and the reference surface of the baren) P can be cleaned every time the pallet is set or at a predetermined period, and the baren) P can be cleaned accurately and reliably at all times. can be stored on each of the processing tables, improving the accuracy of processing the workpiece.

〔Effect of the invention〕

Since the pallet that can be used in the flexible manufacturing system according to the present invention has a tank bottom as described above, it has the following effects. That is, this pallet has a cutout hole in which the central part of the pallet body is cut out wider than the machining area of each of the various processing machines, and a workpiece can be placed in the machining area, and a cutout hole is set at a predetermined position on the processing table of the processing machine. In order to set the workpiece at a predetermined position, a reference means provided on the pallet body that matches the processing reference means of the processing table provided on the processing machine, and a position predetermined from the reference means and the processing A fixing means provided on the pallet body outside the processing area of the machine, and a locking means provided on the pallet body that engages with a locking means of a loading/unloading device that reciprocates between the processing machine and the pallet loading/unloading station. Since it has a locking means, the pallet can be commonly used for various processing machines, setup indexing, processing equipment, etc. in a flexible manufacturing system.
Loading and unloading from one device to another is extremely reliable and smooth, and it is possible to immediately adapt to various machining shapes for workpieces. By sharing the pallet with the pallet, it is possible to always accurately and reliably position the pallet in each processing machine, thereby improving the machining accuracy of the workpiece. In addition, a cutout hole is cut out in the center of the pallet body that is wider than the machining area of each processing machine, and the workpiece is placed in the machining area, so the pallet itself does not become an obstacle to machining. In order to set the pallet at a predetermined position on the processing table, the pallet body is provided with a reference means that matches the processing reference means of the processing table provided in the processing machine, so that the pallet can be placed on the processing machine accurately and quickly. The position can be set.

In addition, in order to set the workpiece at a predetermined position, the fixing means is provided on the pallet body at a predetermined position from the reference means and outside the processing area of the processing machine, so that it can be fixed depending on the type, size, etc. of the workpiece. Accordingly, the workpieces can be accurately set at predetermined positions on the pallet.

Therefore, a pallet with workpieces set in advance is used in a flexible manufacturing system using a large number of various processing machines (hereinafter referred to as EDM), such as a wire electrical discharge machine, a small and large electrical discharge machine, and a die-cutting machine with a number of fine holes of 1i. When transporting and loading/unloading is carried out using a stacker crane that reciprocates along the traveling system between the installed processing machines group and a storage location such as a rack, it is possible to commonly position the pallet for loading/unloading with respect to ifEDM. At the same time, it eliminates the setup indexing device installed in the middle of the traveling system, the anti-corrosion treatment device for applying rust prevention treatment to the workpiece, and the attachments such as machining fluid, foreign matter, dust, etc. attached to the surface of the workpiece. The fluid is sprayed through a device, an intermediate transfer device that reciprocates between the stacker crane and the processing machine group, and transfers the workpiece while maintaining the positioning condition. It can be shared for transportation and loading/unloading. Therefore, by using this pallet, a flexible manufacturing system that can completely automate various types of processing on workpieces and continuously perform various types of processing on workpieces unmanned day and night. can be provided.

Furthermore, the pallet main body has a locking means that engages with a locking means of a loading/unloading device such as a stacker crane or an intermediate transfer device that reciprocates with the pallet loading/unloading station. Pallets can be set on the loading/unloading device accurately, quickly, and unattended.

Therefore, the pallet can be 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 reliably, quickly, and unattended. After the workpiece has been processed, it can be automatically and unmanned from the processing machine, carried out by the intermediate transfer device, and then by the stacker crane from the processing machine group to an appropriate location.

In addition, since the reference means provided on the pallet 7) main body are reference fittings provided on the front end surface and side end surface of the pallet main body, the pallet itself can be configured to be replaceable with an extremely simple structure, and the pallet itself can be attached to each device. The position can be set reliably, and deformation of the reference metal fitting or deviation of the reference during transportation, loading/unloading, storage, etc. can be avoided.

Furthermore, the fixing means includes a workpiece holder fitted and fixed in the cutout hole, a workpiece centering jig attached to the workpiece holder, and a clamp provided on the workpiece centering jig for fixing the workpiece. By replacing the workpiece holder and workpiece setting jig according to the type of workpiece, it is possible to firmly and reliably fix the workpiece to the pallet body in response to various types of workpieces.

Further, the locking means provided on the pallet body is a recess formed in the pallet body, and the pin serving as the locking means of the loading/unloading device engages with the recess, so that the pallet itself Since there are no protrusions, the pallets are easy to handle and can be stored by stacking them.

Further, the loading/unloading 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 transport system between the stacker crane and each of the processing machines. Since the pallet is composed of intermediate transfer devices that move back and forth, the pallet itself can be transported and taken in and out reliably by forming recesses in the pallet in which the locking means of each device engages.

Further, the pallet loading/unloading station may include, for example, a rack equipped with a plurality of shelves having a pallet loading/unloading opening, a pallet on which the pallet is mounted and positioned for loading/unloading the pallet in a positioned state with respect to the stacker crane. A setup indexing device equipped with a mounting base, a rust prevention treatment device installed in a pallet traveling system to apply rust prevention treatment to the workpiece, or a device for spraying fluid to remove deposits adhering to the surface of the workpiece. A fluid spray device installed in the pallet traveling system is a device.

[Brief explanation of the drawing]

Fig. 1 is a schematic plan view showing an embodiment of an FMS that can use the pallet according to the present invention, Fig. 2 is a schematic front view of Fig. 1, and Fig. 3 shows an FM that can use the pallet according to the present invention.
4 is a plan view showing an example of a pallet according to the present invention, FIG. 5 is a sectional view taken along line V-V in FIG. 4, and FIG. 6 is a schematic plan view showing another embodiment of SO. Line Vl-Vl
7 is a plan view showing an example of a setup indexing device that can be used in this FMS, FIG. 8 is a front view of FIG. 7, FIG. 9 is a front end side view of FIG. 7, and FIG. 11 is a side view of FIG. 10, FIG. 12 is a perspective view of the stacker crane, and FIG. 13 is a schematic front view of the stacker crane. Fig. 14 is a front view showing the lower part of the stacker crane, and Fig. 15 is a perspective view showing the stacker crane.
Fig. 16 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;
The figure is a front view of the fork device, Fig. 18 is an explanatory diagram showing the fork device in an extended state, Fig. 19 is an explanatory diagram showing the fork device in a retracted state, and Fig. 20 is an anti-rust treatment that can be used for this FMS. A front view of the device, FIG. 21 is a side view of FIG. 20, FIG. 22 is a side view of the working table of the wire electrical discharge machine, FIG. 23 is a front view of FIG. 22, and FIG. 24 is a wire electrical discharge machine. A plan view of the processing table part of the processing machine, Fig. 25 is Fig. 24
26 is a side view of the other side of the processing table of the wire electric discharge machine, FIG. 27 is a partial sectional view of the clamp device, FIG. 28 is a perspective view of the machining tank cover device, and FIG. The figure is a cross-sectional view of Fig. 28, Fig. 30 is a plan view of the machining tank cover device, Fig. 31 is a side view of the 3rd degree, Fig. 32 is a plan view of the fine electric discharge machine and the pipe electrode exchange device, Figure 33 is a side view of the pipe electrode exchange device, Figure 34 is the line mx-m in Figure 32.
35 is a plan view of the index table, FIG. 36 is a sectional view taken along line B-B in FIG. The figures are the front view of Fig. 37, Fig. 39 is a side view of the processing table part of the die-sinking electrical discharge machine, Fig. 40 is a plan view of the machining tank device, Fig. 41 is the plan view of Fig. 40, and Fig. 42 is the front view of Fig. 37. The figure is a sectional view showing a part of the wall of the processing tank shown in Fig. 40, Fig. 43 is an explanatory diagram showing a part of the opening/closing door mechanism of the processing tank shown in Fig. 40, and Fig. 44 is a wire electric discharge machine. 45 is a side view of FIG. 44, and FIG.
Figure 6 is a front view showing the entire intermediate transfer device, No. 47
The figures are 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. 48, Fig. 50 is a side view of Fig. 48, and Fig. 51 is the intermediate transfer device. 52 is a plan view of FIG. 51, FIG. 53 is a block diagram showing an example of the process from planning schedule to setup schedule creation in this FMS, and FIG. 54 is a diagram showing setup work in this FMS. FIG. 55 is a block diagram showing an example of machining with a fine electric discharge machine in this FMS, FIG. 56 is a block diagram showing an example of machining with a wire electric discharge machine in this FMS, and FIG. The figure is a block diagram showing an example of machining by a die-sinking electrical discharge machine in this FMS. 1--------Wire electrical discharge machine, 2--------・
Small hole electric discharge machine, 3---One-type carving electric discharge machine, 4
--------Rack, 5 Travel path, 6------Stanker crane, 7---Intermediate delivery device, 8
--------Pallet body, 9----- Setup indexing device, 10-- Rust prevention treatment device, 11-- Pallet mounting stand, 12-- 11-- Fluid Spraying equipment, 1
9-------・Shelf, 20・-----One opening, 24
--------All punch holes, 25-1---... Workpiece holder, 26----E Crop setting jig, 27------
--Krumbu, 28.29, 30K. 81 S, 84 S, 875-----One reference plane, 29.30...Reference metal fitting, 29 F-
----- One front end surface, 305 ----- One example end surface, 31
, 32 , 33 --- one recess (locking means), 79
----- Processing tank cover device (processing tank device), 79----- Processing tank device, 81-111 --- Reference fitting (reference means), 82-- Series connection bar, 84, 87---
--Positioning stopper (reference means), P----
Pallet, W workpiece, W E---------wire electrode, P E---------pipe electrode, RE------ one-shaped carved electrode.

Claims (7)

[Claims] (1) A cutout hole is formed in the central part of the pallet body that is wider than the processing area of each processing machine, and a workpiece can be placed in the processing area; A reference means provided on the pallet body that matches the processing reference means of the processing table provided on the processing machine, a position predetermined from the reference means in order to set the workpiece at a predetermined position, and processing of the processing machine A locking means provided on the pallet body that engages with a fixing means provided on the pallet body outside the area and a locking means included in a loading/unloading device that reciprocates between the processing machine and the pallet loading/unloading station. , a pallet that can be used for flexible manufacturing systems. (2) A pallet that can be used in a flexible manufacturing system according to claim 1, wherein the reference means provided on the pallet main body are reference fittings provided on the front end surface and side end surface of the pallet main body. (3) 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. A pallet that can be used in the flexible manufacturing system described in Item 1. (4) The locking means provided on the pallet body is a recess formed in the pallet body, and a pin serving as the locking means of the carrying-in/out moving device engages with the recess. Pallets that can be used with the flexible manufacturing systems listed. (5) The loading/unloading device includes a stacker crane that reciprocates from a rack having a plurality of shelves along a traveling path provided along each processing machine group, and a space between the stacker crane and each processing machine. 2. A pallet that can be used in a flexible manufacturing system according to claim 1, comprising intermediate transfer devices that reciprocate. (6) The pallet loading/unloading station is equipped with a rack equipped with a plurality of shelves having pallet loading/unloading openings, and a pallet loading platform for loading and positioning pallets in order to load/unload the pallets in a positioning state with respect to the stacker crane. an anti-corrosion treatment device installed in the pallet travel system to apply rust prevention treatment to the workpiece, or a pallet travel system to spray fluid to remove deposits adhering to the surface of the workpiece. A pallet usable in a flexible manufacturing system according to claim 1, wherein the pallet is a fluid spraying device provided therein. (7) A large number of processing machines, a rack with multiple shelves for storing pallets, a processing station where workpieces are treated to prevent rust, and a pallet transport device that moves back and forth between pallet loading/unloading stations. A claim applied to a flexible manufacturing system in which a pallet on which workpieces are set is delivered to each of the processing machines while maintaining a positioning state, and the workpieces on the pallet are automatically electrical discharge machined by each of the processing machines. A pallet that can be used in the flexible manufacturing system described in 1.