JPH0422896Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The invention is a numerically controlled wire cut electric discharge machine,
In particular, the present invention relates to a wire-cut electric discharge machine that can be handled and operated by a physically handicapped person who uses a wheelchair as an alternative means of walking.

[Prior art]

Today, wire-cut electrical discharge machines are highly automated, and for example, once wire-cut electrical discharge machining has started, unless there is a particular accident or cause, the operator, etc., cannot operate the machine until the specified machining is completed. There is almost no need to always be present at the wire electrode or to constantly monitor it, and recently various devices have been developed as automatic insertion and setting devices for wire electrodes (part of the workpiece). Automatic or non-automatic robots, workpiece pallets, and positioning installation methods for non-automatic positioning, loading, and unloading are gradually being developed and used. In fact, it has become possible to do most of the work.

Therefore, in this sense, wire-cut electrical discharge machines are suitable for use and operation by persons with physical disabilities, but conventionally commercially available wire-cut electrical discharge machines of this type are subject to Article 40 of the Enforcement Regulations of the Labor Standards Act. According to the Attached Table 2 Physical Disability Classification Table, physically disabled people using wheelchairs who fall under Grades 1 8 and 9, or more specifically, those who use wheelchairs who have come to fall under Grade 1 9 due to spinal cord injury. According to people with physical disabilities, it is almost impossible for them to operate the vehicle, or even if they are able to do so with various techniques, it is extremely difficult.

In other words, most of the physically disabled people mentioned above have almost no abdominal or back muscle strength, rely only on the strength of their upper limbs to move their bodies, and are almost completely unable to stand up or move around. For such people, the above-mentioned commercially available mechanical devices, which are manufactured to suit the working area and height of the mechanical device, as well as the operation buttons, switches, etc., to the height of the standing work of able-bodied people, are not suitable for such people. It is common for people to be unable to reach their hands because they are located too high or too far away from wheelchair access, and even if they can reach them, they are forced into an impossible position, such as lying on their side. In addition, if you do not have abdominal or back strength, you will not be able to lean forward and it will be difficult to lift objects from low places. It is difficult to pick up and hold the handle since it is not a very light item, and therefore it is not suitable for work that requires force with the hand outstretched.

[The problem that the idea aims to solve]

For this reason, attempts have been made to develop three-dimensional working wheelchairs that can move freely up and down, left and right, front and back, and in all directions. It has the disadvantage of being complex, expensive, and especially large, and designing and manufacturing a specialized mechanical device to a certain extent for physically disabled people is not only extremely expensive in terms of the number of units manufactured, but also difficult for able-bodied people. There were various drawbacks such as unavoidable difficulty in usability.

For this reason, the direction of development of mechanical devices and their attached systems that can be operated and used by people with physical disabilities is to develop machines and various attached systems that can be normally operated and used by able-bodied people to a certain degree with special work operations. Either the system should be equipped with various devices and functions that can be operated and used by people with physical disabilities, or the system should be such that people with physical disabilities can perform all tasks except for truly special operations. However, the present invention makes a proposal regarding the latter method.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a wire-cut electrical discharge machine having a wire-cut electrical discharge machine body, a wire-cut electrical discharge machining power source, a numerical control device for contour control, and a machining fluid supply/discharge circulation and filtration device. A feed mechanism for moving a column having a pair of arms from a fixed position during processing to a work position for exchanging wire electrodes, etc., and a drive device for the feed mechanism are provided, and a stopper block is provided for positioning the column at the fixed position during processing. The workpiece mounting device is composed of a workpiece positioning mounting jig and a workpiece mounting base, and the workpiece positioning and mounting jig is used to attach, replace, etc. the workpiece from a fixed position during processing. a feeding mechanism for moving the workpiece to the working position and a drive device for the feeding mechanism; a mechanism for engaging the workpiece positioning mounting jig with the workpiece mounting base to position it on the cross table; means for fixing the workpiece positioning mounting jig to the workpiece mounting base at a position to be positioned and fixing it to the cross table; A space portion is provided below each of the moving parts of the wheelchair worker to allow access to the part below the knees of the worker using the wheelchair, and the workpiece mounting device, most of the wire electrode supply/discharge suspension guide device, and the wire cut discharge Most of the work operation switches and push buttons on the main body of the processing machine, as well as the operation and setting switches and most of the push buttons on the wire cut electric discharge machining power source and numerical control device, are installed from roughly above the knees to the top of the head of the worker in a wheelchair. It is arranged in an area with a height of .

[Effect]

According to this invention, even if a person with a physical disability who uses a wheelchair falls under the category 1 class 9 mentioned above,
This is useful because it not only allows the operator to manufacture molds by operating a wire-cut electrical discharge machine in the same manner as a healthy person, but also allows for routine maintenance, inspection, and maintenance of mechanical equipment.

〔Example〕

To explain with reference to the drawings below, Figures 1A and B
Figure 2 shows the front and side views of the main body of a normal wire-cut electrical discharge machine for able-bodied people, and Figure 2 shows the machining power supply and numerical control device (excluding the numerical control program device part).
This shows a front view of the unit that integrates the
In FIG. 1, 1 is the main body bed of the processing machine, 2 is an X and Y axis drive device mounted on the bed, such as a DC motor, and each axis drive mechanism, such as an X shaft having a ball screw and a nut. -Y cross table, 3
4 is a column installed upright on one end side of the bed, 4 is a workpiece mounting part on the cross table, and includes a processing liquid receiving pan 4a and a workpiece mounting base 4b.
A pair of arms 5 are provided on the upper surface side of the side bed 1 of the column 3, extending to the mounting base 4b and having positioning guides 5a' and 5b' at their tips, respectively.
a, 5b, and at the top of the front side of the column 3 is a setting operation device section 6 of the processing machine main body, and below it is a storage and winding drum for wire electrodes,
A wire electrode feeding and discharging suspension guide device 7 is provided, in which capstans and pinch rollers for drawing out and tensioning the wire electrode 8 and the necessary suspension guide rollers are provided. Incidentally, a capacitor box 12 is provided at the bottom of the device 7 and has a capacitance changeover switch on the front surface.

In Fig. 2, 9 is the numerical control command tape installation part;
Numerical control setting operation device section having a display section and MDI input section as necessary; 10 is a machining power setting operation device section for wire cut electric discharge machining; is installed with the device 9 above, but the device 1
0 may be provided at the top of the device 9.

In any case, the height of the processing machine main body shown in FIGS. 1A and B and the processing power supply and numerical control device shown in FIG. This is around 1,600 mm, and it tends to become even higher as the body position improved after the war.For this reason, the eye height of a normal wheelchair user of the above-mentioned Class 19 is at most the height of the workpiece mounting base 4b. About 1100
mm, it is not necessarily easy to operate the setting operation device 9 of the numerical control and the setting operation device 10 of the machining power supply, and in some cases, a lifting stand may be required. When working with the workpiece mounting part 4 located at a position retracted from the front edge, side, or rear edge of the bed of the machine body, or under similar conditions, using the setting operation device 6 of the processing machine body located at a higher position. It can be easily surmised that the various operations and the suspension of the wire electrode in the wire electrode supply/discharge suspension guide device 7 are extremely difficult or, in some cases, almost impossible.

This invention solves various problems in the mechanical equipment, operation, and operation work of wire-cut electrical discharge machines, which can be easily and routinely performed by able-bodied operators as normal work without any particular problem. Operation and maintenance of some mechanical devices, equipment, and equipment to the extent of work. To be able to carry out a series of tasks such as maintenance, replacement, cleaning, inspection, etc., without requiring the help of a healthy person, except for extremely special operations and tasks, and to be able to process or produce molds in the same way as a healthy person. This is what I did.

For example, in a unit that integrates a processing power source and a numerical control device as shown in FIG. Therefore, it is necessary to arrange the structure so that it is located in an area at a height below the top of the head or a slightly higher position, and such a design change configuration, for example, separates a part of the power supply and circuit equipment housing section 11. , the separating section is located at the top of the device 10, or the above-mentioned housing section 11
This could be countered by increasing the width or depth of the storage section 11 to make it lower, but if the entire front surface is straight in the vertical direction, if the wheelchair user remains facing forward, the worker may Since the eaves-shaped part on which the knees and both feet are placed protrudes forward from the front of the body, it is difficult to get close enough to the unit, and therefore setting operations using push buttons, changeover switches, rotary switches, adjusters, etc. are difficult. Adjustments and other tasks are not always easy when making changes.
It is preferable that the setting operation devices 9 and 10 be placed integrally or separately on a desk-like base into which the knee portion or at least the eaves-like portion can fit.

Therefore, this is exactly the same in the case of the setting operation device 6 of the processing machine main body, and in the case of this device 6, securing the installation position of the device 6 around the processing machine main body is as follows. The attachment part 4 of the workpiece moves on the horizontal plane of the cross table 2 in the X and Y axes directions by a predetermined stroke. There is also a structure in which the attachment portion 4 of the workpiece moves in each of the X and Y axes directions outside the upper surface area of the bed 1, so it is difficult to secure the above position.

FIG. 3 shows an example of how to deal with such a case, and shows at least the setting operation device 6, or the device 6 or the device 6, 9 out of the setting operation devices 6, 9, and 10 arranged near the processing machine main body. , 10, and an operation workbench 13 on which operating devices such as an automatic wire electrode insertion or connection device, an automatic workpiece attachment/detachment device, a robot device for loading and unloading workpieces, etc. are installed as necessary. The workbench 13 is configured in a U-shape when viewed from the side, and the legs and knees of the wheelchair 14 are inserted into the U-shaped opening from the front, and the legs and knees of the wheelchair 14 are inserted from the front toward the front. The device 6 or the devices 9 and 10 are placed in a desired tilted state and used for setting operations. In this case, the power supply and circuit equipment housing section 11 may be configured to be housed on one side of the workbench 13, or on the front wall, etc.
It can also be a separate component from the workbench 13.

FIG. 4 shows an example of the arrangement and configuration of a programming device 15 similar to the workbench 13 of the setting device. , an automatic program unit 15a having an input keyboard, a display, a line printer, etc., a program recording device 15b for paper tape punching or magnetic tape recording, an X-Y plotter 15c for program checking, etc., and the workbench 13 A metal pipe mounting frame 16 that is substantially equivalent to
The height, depth, etc. of the wheelchair 14 are designed to facilitate work using the wheelchair 14.

5 and 6 are explanatory configuration diagrams consisting of a front view and a top view of an embodiment of the present invention in the main body of a wire-cut electric discharge machine, and the same parts or the same working parts as in FIG. 1 are designated by the same reference numerals. It is shown with . First, the difference from the apparatus shown in FIG. 1 is that only the attachment part 4 of the workpiece 16 and the cross table 2 are mounted and held on the bed 1, and the A space 1a is formed into which the part below the knees of the wheelchair 14 can fit, making it easy to carry out some work or to visually monitor the machine by bringing the upper body close to the machine while riding in the wheelchair. The column 3 is erected on an L-shaped frame 17 connected to the upper edge of one side of the bed 1.
7 and the bed 1 constitute the entire bed of the processing machine main body, the lower part of the frame 17 is a cavity 17a, and the front surface of the frame 17 is the front surface of the column 3 as shown in FIG. The structure is such that the wheelchair worker can get close enough to the column 3, especially the wire electrode supply/discharge suspension guide device 7, and the processing machine main body located at the top of the column 3 The setting operation device 6 is the workbench 13 shown in FIG.
etc., so it has been excluded. Frame 1
A guide 18 is provided on the upper surface of the column 7 to guide the loading column 3 so as to be movable in the left and right direction. They are connected and moved in the left and right uniaxial directions from a fixed position during machining to a work position for exchanging wire electrodes, etc. 3c is a stopper block that positions the column 3 on the bed 1 at a fixed position during processing.
A predetermined positional accuracy is achieved when c and column 3 are closely fixed, and wire cut electrical discharge machining is performed at this position.

The column 3 is moved to the right by the cylinder 19 due to the storage drum 3a of the wire electrodes 8;
Or, when replacing the winding drum 3b, the wire electrode 8 may be replaced with a large number of suspended guide rollers, drawer and brake capstans, pinch rollers, positioning guides 5a', 5b', or even the wire electrode 8. In addition to adjusting and cleaning the upper and lower guides 5a' and 5b' before and after setting the tip of the wire electrode 8 in the automatic insertion or connection device or inserting the wire electrode into the machining start hole of the workpiece 16. Column 3 can also be moved to frame 1 when replacing, adjusting, maintaining, inspecting, and cleaning the many guide rollers, capstans, and pinch rollers, adjusting and cleaning machining liquid nozzles, etc.
7. By moving the robot to the center or right side and having the above configuration, it is possible for a wheelchair worker to perform the various tasks described above.

Next, a description will be given of the attachment/detachment device for the mounting portion 4 of the workpiece 16. Even if the recessed fitting portion 1a of the bed 1 is formed not only on the front side but also on the left side and even the rear side, Directly attaching the workpiece 16 to the mounting base 4b has problems such as the position being far from the periphery of the top surface of the bed 1 and the weight of the workpiece 16, as well as the narrow work requiring precision. Extremely difficult for people with disabilities. Attached to the left side of the bed 1 in FIG. 5 is a holding stand 21 of a working table 20 for attaching and removing the workpiece 16 to and from the jig, which has a substantially inverted L shape when viewed from the front. A fluid pressure cylinder 22 is provided that moves the table 20 by a relatively short length in the left and right uniaxial directions, and the positioning mounting jig 23 for the workpiece 16 is mounted on and removed from the workpiece mounting base 4b. When transferring the table 20 onto the work table 20, the cylinder 22 is driven to bring the right end of the table 20 into contact with the mounting base 4b, and the workpiece 1 is moved together with the jig 23.
After positioning and installing the cross table 6, make sure that it does not interfere with the wire cut electric discharge machining, that is, so as not to prevent the movement of the mounting base 4b by the cross table 2.
It is moved back to the left by a predetermined length, and its position is roughly indicated by a broken line 24. 25
is a fluid pressure cylinder that moves the jig 23 fixedly provided on the left end side of the table 20 from the fixed position during machining to the work position for attaching or replacing the workpiece 16, and the tip of the piston rod is It is configured to be able to engage and disengage from a predetermined portion of the jig 23, and the machined workpiece 16 is pulled out from the mounting base 4b together with the jig 23 onto the work table 20, and
The workpiece 16 is placed on the table 20 by the worker.
At the same time as removing the workpiece from the jig 23, positioning and attaching a new workpiece to be processed next to the jig, or positioning another workpiece in advance on another jig on the table 20 or other work table. The previously installed item is brought into a predetermined engagement state with the tip of the piston rod of the cylinder 25 on the table 20, and the new workpiece and jig are slid and pushed on the table 20 by the rod. Mounting stand 4
b.

A plurality of jigs 23 are prepared depending on the dimensions, shape, size, etc. of the workpiece 16, such as jigs for fixing the workpiece 16, such as nuts, screw shafts, fitting T-grooves at the end of the screw shaft, etc. (Fig. (not shown), as shown in Figure 7A, there are
Each axis reference plane 23X, 23Y, and Z axis (height)
A reference surface 23Z is formed, and a positioning guide groove is formed so that the mounting table 4b can be moved smoothly and the work table 20 can be moved smoothly, and the mounting accuracy for the mounting table 4b can be easily achieved. 23a is formed, and in relation to the groove 23a, the mounting base 4b has a positioning guide protrusion 4c as shown in FIGS. 6 and 7B, and the table 20 also has a protrusion 4c. 20a is formed, and both of the protrusions 4c and 20a are configured to be located on a uniaxial straight line. Reference numeral 4d denotes a positioning stopper for the strip projection 4c, and the position of the workpiece positioning and mounting jig 23 on the cross table 2 is determined by the strip projection 4c and the stopper 4d. Also 4
Reference numeral e denotes a rod that moves forward and backward using fluid and a spring, and fits into a positioning hole (not shown) of the jig 23.
is fixed at the predetermined position determined above to be fixed to the cross table 2. With this configuration, if the height of the work table 20 is appropriate for a physically handicapped person, the worker can approach the table 20 sufficiently from the empty space at the bottom of the holding table 21. Therefore, it is possible to accurately attach and detach the workpiece 16 to and from the jig 23 without difficulty.
In addition, each of the above-mentioned fluid pressure cylinders 19, 22, 25
It goes without saying that the rod can be operated by a screw shaft, a nut, a motor for driving the nut, and the like.

In the embodiments shown in FIGS. 5 to 7 above,
Although an embodiment has been described in which the column 3 and the workpiece positioning fixture 23 are configured to be movable in the left and right direction during various operations, they may also be configured to be movable in the front and back direction, and in that case, the If the machine body has the configuration as shown in Figure 1, the column and jig 23
The column 3 and the jig 23 may be moved to the front edge of the bed 1, or the eave-like object may be foldable or detachable, and the column 3 and the jig 23 may be pulled out to the top of the eave-like object. In addition to 23, various modifications are possible, such as configuring the workpiece mounting portion 4 or the mounting base 4b on the cross table 2 to be movable.

With the configuration of the processing machine main body, processing power supply, and numerical control setting operation device as described above, most of the operation and operation of the wire cut electric discharge machine by a physically disabled person using a wheelchair, and some operations are possible. Maintenance and maintenance can also be carried out, for example, automatic suspension setting of the wire electrode 8, automatic wire electrode threading through the machining start hole of the workpiece 16, and wire connection mechanism.
For example, Japanese Patent Application Laid-open No. 50-44944 and Japanese Patent Application Laid-open No. 54-89395.
As is well known in the above publications, various types of wire electrodes have already been developed, and the above-mentioned automatic wire electrode threading through the machining start hole can be done in one place, for example, when machining multiple pieces. After the processing is completed, the wire electrode is cut, the next pilot hole is positioned, and the wire electrode is threaded through and processed.These operations can be carried out according to a preset program. Therefore, it is desirable to provide such a mechanism, and by doing so, the operator only needs to pay out the wire electrode 8 from the storage drum and suspend the tip of the wire electrode to the wire electrode cutting position of the automatic wire threader. Because there is, the work is even lighter. It should be noted that if the workpiece 16 exceeds a certain size or weight, it goes without saying that even an able-bodied person will have to rely on various types of transportation means such as robots, cranes, etc. The purpose can be achieved by adding or devising a part of the system for people with physical disabilities in substantially the same manner as in the case of the above.

Therefore, the workpiece 16 must be provided with one or more machining start holes, except in special cases where machining is started from the outer edge;
If the worker is a able-bodied worker, it is sufficient to use a separate drilling machine or the like to drill holes at the marked positions, but in the case of a physically handicapped worker as mentioned above, if this point is neglected, such points may be lost. As a result, in practice, even a wire-cut electrical discharge machine as devised as described above may not be able to be used because it cannot supply a workpiece with a machining start hole.

For this reason, it is preferable to attach the machining start preparation hole machining device to the machining machine body shown in FIGS. 5 and 6 above. The pilot hole processing device may be a mechanical drilling device that uses a rotary drill, but depending on the material such as the hardness of the workpiece, drilling may be difficult. It is desirable to attach a drilling device using an electric discharge machining method, especially since wire cut electric discharge machining is subsequently performed.

FIGS. 8A and 8B are explanatory diagrams of an embodiment of an apparatus equipped with means for drilling a prepared hole by electric discharge machining, and reference numeral 27 denotes a prepared hole machining device having an electric discharge drilling head 26 extending from the column 3 (not shown). As shown by the arrow 28, the arm is provided so that it can swing in the horizontal direction using the column 3 support part as a fulcrum, or it can be extended and contracted in the axial direction of the arm 27, or the vertical position of the column 3 can be adjusted. . A rod-shaped or tubular long electrode 29 is fixed at one end to a movable head 30, and the other end is insulated and guided by a guide portion 31 to face the workpiece 16. The axis of the electrode 29 is configured and positioned so as to coincide with the axis of the wire electrode 8 between the upper and lower guides 5a' and 5b' during wire cut electric discharge machining. 32 is a moving guide rod of the moving head 30, 33 is a feed screw shaft, 3
4 is a worm foil, 35 is a worm, 36 is a servo motor whose rotation is controlled by a control circuit (not shown), 37 is a machining fluid supply pipe when the electrode 29 is a pipe, and 38 is a machining power supply to the electrode 29 The pin 39 is an electric discharge machining power source that may also be used as a wire cut electric discharge machining power source.

As mentioned above, the workpiece 16, which is set at a predetermined position by the jig 23 and the mounting base 4b, is moved to the cross table 2 so that the machining start hole position specified in advance by the program coincides with the axis of the electrode 29.
After driving and positioning the electrode 29 and machining the pilot hole with the electrode 29, the electric discharge drilling head 26 and the arm 27 are retracted, and the wire electrode 8 is automatically threaded.
Alternatively, the wire is threaded manually while the column 3 and the jig 23 are moved as necessary, and the wire cut electrical discharge machining is performed.

Of course, at that time, in order to check the flow of machining fluid by the machining fluid nozzle and others when positioning the wire electrode 8 and the workpiece 16 or when starting wire cut electric discharge machining, it is necessary to check the flow direction of the machining fluid by the machining fluid nozzle, etc. as shown in FIG. Since it is not possible to approach the main body of the processing machine and work while visually observing the workpiece attachment part 4 using only the workbench 13, in such a case, a hand-operated switchbox 40 as shown in FIG. It is necessary to use it. In FIG. 9, reference numeral 41 denotes the main body of the processing machine or the workbench 13, inside which are a lead wire 42 and a storage drum 43, which can be fed out enough to move the switchbox 40 to an appropriate position.
is provided. In the switch box 40, 44 is a left/right forward/backward movement switch for the cross table 2, 45 is a forward/backward movement switch in the same forward/backward direction, and 46 is an arm 27 for machining start hole machining/electrical discharge machining.
47 is an automatic wire electrode threading command switch, 48 is a wire cut electrical discharge machining power on/off switch or detection voltage on/off switch, and other workability switches. In consideration of this, various start and stop switches, adjustment volume, etc. are provided.

[Effect] As a result, according to the present invention, even a physically disabled person who uses a wheelchair and falls under the above-mentioned Class 1 9 can operate a wire-cut electrical discharge machine in the same way as an able-bodied person. This is useful because it not only allows for the production of molds, but also allows for daily maintenance, inspection, maintenance, etc. of mechanical devices.

[Brief explanation of the drawing]

1A and 1B are front and side views showing an example of the main body of a general-purpose wire-cut electric discharge machine, and FIG. 2 is a front view showing an example of a unit that integrates the machining power source and numerical control device. Figure 3 is a perspective view showing an example of an operation workbench in which a setting operation device outside the processing machine body is housed so that it can be used by a physically disabled person using a wheelchair, and Figure 4 shows an example of a mounting frame for a programming device. A perspective view, FIG. 5 is a front view showing an embodiment of the main body of the wire cut electric discharge machine according to the present invention, FIG. 6 is a top view of the same, FIG. 7A is a workpiece mounting jig, and FIG. 7B is
8A is an explanatory perspective view of the embodiment of the mount, FIG. 8A is an explanatory diagram of the configuration and layout of the head for machining the machining start hole, FIG. 8B is an internal configuration diagram of the machining head, and FIG. 9 is the machine. FIG. 3 is an explanatory diagram showing an example of a hand switch box in operation. 1... Processing machine main body bed, 2... X and Y axis drive device, 3... Column, 4... Workpiece attachment part,
4a... Processing liquid receiving pan, 4b... Workpiece mounting base, 5a, 5b... Arm, 6... Setting operation device section, 7... Wire electrode supply/discharge suspension guide device, 8...
... Wire electrode, 9, 10 ... Setting operation device, 11
...Circuit equipment storage department.

Claims (1)

[Scope of utility model registration request] A bed, a cross table placed on the bed and capable of controlled movement in the front-rear (Y-axis) and left-right (X-axis) directions when viewed from the front, and a workpiece positioning attachment part. a workpiece mounting device that is fixedly placed; a column that is installed vertically on the bed on the side of the cross table; and a column that extends from the upper and lower sides of the column to the location where the workpiece mounting device is arranged. a pair of arms provided as a pair of arms, drums for storing and winding up wire electrodes provided on the front side of the column and the arm, a suspended guide roller for forming a wire electrode path, and a brake mechanism for drawing out and tensioning the wire electrode. and a wire electrode supply/discharge suspension guide device that moves the wire electrode with a predetermined tension in the Z-axis direction perpendicular to the X-Y axis plane at the tip of the arm. A wire-cut electrical discharge machining power supply, a numerical control device for wire-cut electrical discharge machining contour control, and a control device for machining fluid supply/discharge circulation and filtration, which are integrally or separately configured with the machine body and installed together with the wire-cut electrical discharge machining main body. A wire cut electric discharge machine consisting of a wire cut electric discharge machine is provided with a feeding mechanism for moving the column having the pair of arms from a fixed position during machining to a working position for exchanging wire electrodes, and a drive device for the feeding mechanism, and a driving device for the feeding mechanism. A stopper block is provided for positioning the workpiece at a fixed position during machining, and the workpiece mounting device is composed of a workpiece positioning mounting jig and a workpiece mounting base, and the workpiece positioning and mounting jig is used for positioning the workpiece at a fixed position during processing. A feeding mechanism for moving the workpiece from the workpiece position to a work position for attaching, exchanging, etc. and a drive device for the feed mechanism are provided, and the workpiece positioning mounting jig is engaged with the workpiece mounting base. a mechanism for positioning on the cross table, and a means for fixing the workpiece positioning and mounting jig to the workpiece mounting base at the position positioned by the mechanism to make it fixed to the cross table; Further, a space portion is provided below each moving portion of the column and the workpiece positioning and mounting jig, into which a portion below the knees of a worker using a wheelchair can enter, and the workpiece mounting device and the wire Most of the electrode supply/discharge suspension guide device, most of the operation switches and push buttons of the wire-cut electric discharge machine main body, and the operation and setting switches and push buttons of the wire-cut electric discharge machining power supply and the numerical control device. A wire-cut electric discharge machine for a physically handicapped person, characterized in that most of the wire-cut electrical discharge machine is arranged in an area at a height from approximately the top of the knees to the top of the head of a worker using a wheelchair.