JPH05318231A - Wire cut electric discharge machine - Google Patents

Abstract

PURPOSE:To prevent works to be processed in the condition standing by from rusting which is caused by attachment of the splash generated in the electric discharge machining. CONSTITUTION:A plurality of works to be processed 23 are mounted on a table 22 and subjected to the processing one after another. The table 22 is installed in a processing trough 21, which is supplied with water 30 from a water supplying device 31 so that the water level exceeds the oversurfaces of the works 23. Supplied water from the inlet port 32 and the exhaust water from the drain port 35 produce a water stream in the trough 21 continuously, which flushes away the splash from works 23 in standby for processing. This can be done certainly and automatically.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire cut electric discharge machine.

[0002]

2. Description of the Related Art A wire-cut electric discharge machine moves a wire electrode and a workpiece relative to each other while causing an electric discharge between the wire electrode and a conductive workpiece mounted on a mounting base. By doing so, the work is cut. The mount may be provided in a processing tank filled with a liquid such as water. Further, there is one in which a plurality of workpieces can be mounted on a mounting base of one wire-cut electric discharge machine and these workpieces are sequentially machined. In this case, the chips generated by the processing of a certain work piece may fly and adhere to other work pieces waiting to be processed. Then, if the cutting chips adhere to the work piece waiting to be processed in this way and are left as it is for a long time, rust tends to occur from the part of the work piece to which the cutting chips adhere. Therefore, in order to prevent the generation of rust, it is necessary to remove the chips from the workpiece waiting to be processed at any time, which has been done manually in the past. However, removing the chips by hand in this way is troublesome and lacks certainty.

By the way, in the wire-cut electric discharge machining, if the chips generated by the machining stop on the workpiece being machined, the machining is adversely affected. Therefore, as shown in FIG. 3, nozzles 3 and 4 in which the wire electrode 2 is vertically inserted are provided at positions sandwiching the workpiece 1 in the vertical direction, respectively, and the liquid is discharged from the upper nozzle 3 toward the workpiece 1. For example, there is a processing machine that removes chips from the workpiece 1 being processed by injecting water and inhaling the water from the lower nozzle 4. This processing machine can remove chips from the workpiece 1 being processed, but as described above, cannot remove chips from other workpieces 1 such as those waiting for processing.

[0004]

As described above, in the conventional wire-cut electric discharge machine, when the chips generated by the machining of the workpiece fly and adhere to the workpiece waiting to be machined, Since chips must be manually removed from the work piece by hand, it is troublesome, lacks certainty, and easily causes rust on the work piece.

The present invention is intended to solve such a problem, and automatically and reliably prevents the chips generated by the processing of the work piece from flying and adhering to the work piece such as waiting for the work. It is an object of the present invention to provide a wire cut electric discharge machine that can prevent the work piece from rusting.

[0006]

In order to achieve the above object, a wire-cut electric discharge machine according to the present invention is provided with a wire electrode and a plurality of workpieces attached to a conductive workpiece in a vertically extended state. An attached mount, a moving device that horizontally moves the wire electrode and the mount relative to each other, a machining power source electrically connected between the workpieces attached to the wire electrode and the mount, A processing tank having a built-in mounting base, and a liquid supply for supplying liquid into the processing tank in a state where the water level exceeds the upper surface of the workpiece mounted on the mounting base and for causing a flow of liquid in the entire processing tank. And a device.

[0007]

In the wire-cut electric discharge machine according to the present invention, the workpiece mounted on the mounting base and the vertically extending wire electrode are moved horizontally by the moving device while being mounted on the wire electrode and the mounting base. By energizing from a machining power source that is electrically connected to the processed workpiece,
Electric discharge is generated between the wire electrode and the conductive work piece to process the work piece. Then, a plurality of workpieces are mounted on the mount and these workpieces are sequentially processed. By the way, the mount is in the processing tank, but the liquid is supplied to the processing tank by the liquid supply device, and the water level of the liquid exceeds the upper surface of the workpiece mounted on the mount. .. Along with this, the liquid supply device causes a flow of liquid in the entire processing tank. Therefore, even if the cutting chips produced by the processing of the workpiece try to adhere to the processing object such as waiting for processing, the chips are swept by the liquid and immediately removed from the processing object.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the wire cut electric discharge machine of the present invention will be described below with reference to FIGS. In FIG. 2, 11 is an upper base, 12 is an intermediate base, and 13 is a lower base, and the positions of these bases 11, 12, and 13 are fixed. A front and rear slider 14 is supported on the lower base 13, and a left and right slider 15 is supported on the front and rear slider 14. The front and rear sliders
The left and right sliders 14 are driven in the front-rear direction with respect to the lower base 13 by a drive source (not shown).
It is driven in the left-right direction. The sliders 14 and 15 form the moving device 16. In addition, the upper part of the left and right sliders 15 is the intermediate base 12
It is slidably mounted on top. A processing tank 21 is fixed on the left and right sliders 15, and a mounting base 22 is horizontally fixed in the processing tank 21. This mount
A plurality of, for example, four conductive work pieces 23 are attached to the upper surface 22 and a clamp 24 for fixing these work pieces 23 is provided. Also, the upper base
A head 25 is vertically installed from 11 into the processing tank 21, and a nozzle 26 is provided at the lower end of the head 25 as shown in FIG. On the other hand, the nozzle 27 provided on the intermediate base 12 is located below the mount 22. And
The upper and lower nozzles 27 are inserted with the wire electrodes 28 extending vertically. The wire electrode 28 is for the workpiece 23 at a position between the upper and lower nozzles 27,
The reel is wound from one reel (not shown) to another reel, and moves from top to bottom at a position between the upper and lower nozzles 27. Although not shown, a machining power source is electrically connected between the wire electrode 28 and the workpiece 23 mounted on the mount 22. In addition, the moving device 16 horizontally moves the workpiece 23 mounted on the mounting base 22 with respect to the wire electrode 28.

Further, the wire-cut electric discharge machine supplies water 30 into the machining tank 21 in a state where the water level exceeds the upper surface of the work piece 23 mounted on the mounting table 22, and the entire machining tank 23 is treated with water. A water supply device 31 as a liquid supply device that causes a flow in 30 is provided. Next, the configuration of the water supply device 31 will be described with reference to FIG. The processing tank
A plurality of water supply ports 32 are provided at a position on the one side surface of the work piece 23 that is approximately as high as the upper surface of the work piece 23, and these water supply ports 32 are connected to a water tank 34 via a pump 33. There is. A drain port 35 is provided at the bottom of the other side surface of the processing tank 21.
Is provided, and these drain outlets 35 are filters 36,
The water tank 34 is passed through an ion exchanger 37 and a pump 38.
It is connected to the. Further, in the side surface of the processing tank 21, a processing tank is provided at a position approximately as high as the upper surface of the workpiece 23.
A water level sensor 39 for detecting the water level in 21 is provided.

Next, the operation of the above configuration will be described. In wire-cut electric discharge machining, a plurality of workpieces 23 are fixed and mounted on a mounting base 22 by clamps 24. Then, by the moving device 16, the mounting base 22
While moving the wire electrode 28 relatively horizontally with respect to the work piece 23 above, an electric discharge is generated between the wire electrode 28 and the conductive work piece 23 by the energization from the processing power source. The workpiece 23 is processed. Although a plurality of workpieces 23 are mounted on the mount 22, these workpieces 23 are sequentially processed. During such wire-cut electric discharge machining, by ejecting water from the nozzle 25 through which the wire electrode 28 is inserted toward the workpiece 23 being machined,
The chips are removed from the work piece 23 being processed. Along with this, water 30 is supplied from the water tank 34 to the processing tank 21 through the water supply port 32.
Is supplied. This water supply is always done and the water supply port
With the inflow of water from 32, the water flows out from the drain port 35, and the water 30 flowing out from the drain port 35 returns to the water tank 34 via the filter 36 and the ion exchanger 37. In this way, the water flow is continuously generated in the entire processing tank 21. Also,
The drainage is controlled by the water level sensor 39, the water level in the processing tank 21 is maintained at a height slightly above the upper surface of the work piece 23 mounted on the mounting base 22, and the water 30 is on the upper surface of the work piece 23. It flows in almost one direction. This allows a certain work piece 23
Other workpieces such as chips waiting to be processed due to cutting
Even if it adheres to the 23, the chips are washed away by the water 30 and immediately removed from the work piece 23.

Thus, according to the configuration of the above-described embodiment, the entire workpiece 23 is immersed in the water 30 in the processing tank 21, and the water 30 in the processing tank 21 is forced to flow,
It is possible to automatically remove chips that are about to adhere to the work piece 23 such as waiting for processing. Therefore, it is possible to efficiently and surely prevent the chips from adhering to the work piece 23 such as waiting for processing, and prevent the work piece 23 from rusting due to the long-term adhesion of the cutting chips.

The present invention is not limited to the above embodiment, but various modifications can be made. For example,
The arrangement of the water supply port and the drainage port is not limited to that of the above-described embodiment, and any arrangement may be used as long as it can generate a water flow that can reliably prevent the adhesion of cutting chips to the workpiece.

[0013]

According to the present invention, in a wire-cut electric discharge machine, a mounting base on which a plurality of workpieces are mounted is built in a machining tank, and the liquid supply device mounts the workpieces mounted on the mounting base. As the liquid is supplied into the processing tank while the water level exceeds the upper surface and the liquid is caused to flow in the entire processing tank, the chips generated by the processing of the work piece are blown away and the processing waits on the mounting table. It is possible to automatically and surely prevent the liquid from adhering to other workpieces such as. Therefore, it is possible to surely remove the chips from the workpiece including those waiting to be machined without any trouble, and it is possible to surely prevent the workpiece from rusting due to the adhesion of the chips.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment of a wire cut electric discharge machine of the present invention.

FIG. 2 is a schematic perspective view of the same.

FIG. 3 is a cross-sectional view of a nozzle portion showing an example of a conventional wire cut electric discharge machine.

[Explanation of symbols] 16 Moving device 21 Processing tank 22 Mounting base 23 Conductive work piece 28 Wire electrode 30 Water (liquid) 31 Water supply device (liquid supply device)

Claims (1)

[Claims] 1. A wire electrode for a conductive workpiece in a vertically extended state, a mount for mounting a plurality of workpieces, and a moving device for horizontally moving the wire electrode and the mount relative to each other. A machining power source electrically connected between the wire electrode and the work piece attached to the attachment base, a machining tank containing the attachment base, and an upper surface of the work piece attached to the attachment base. A wire-cut electric discharge machine, comprising: a liquid supply device that supplies a liquid into the machining tank in a state where the water level exceeds and a liquid is generated in the machining tank as a whole.