JPS58102625A - Cutting work by electric discharge machining - Google Patents

Abstract

PURPOSE:To improve the adhesiveness between a work and a work supporting body, permit working up to an adhesion layer and facilitate demounting of the work by fitting and fixing a work with plated surface onto the work supporting body through soldering. CONSTITUTION:A work 1 whose contact surface to a work supporting body 8 is plated by the metal capable of soldering is installed onto a work supporting body 8 through soldering. Further, said work supporting body 8 is installed onto a mounting base 4 by a fastening tool 3, and then fixed onto a table 5. If the work supporting body 8 is cut beforehand by the depth of at least half of the diameter of cutting a wire 6, at the same position as the position where the work is cut by the wire 6, the wire 6 shifts to the cut on the work supporting body 8, so the work can be cut perfectly up to its end.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a cutting method using an electrical discharge machine, particularly when dicing a workpiece using an electrical discharge machine. This invention relates to a cutting method using an electric discharge machine that cuts a shake by electric discharge.

Generally speaking, as shown in Fig. 1, in an electric discharge machine, a workpiece 1 is mounted on a table 4 using a workpiece holder 2, a screw etc. is tightened by a tool 3, and the workpiece is placed on a table 5. Place it so that it can be moved, and connect (-) electricity to wire 6 and (-) to the work side.
When electricity of +) is applied, the wire 6 discharges to the workpiece 1, and the surface of the wire 6 and the discharged part of the workpiece 1 melt,
This device is capable of cutting into desired shapes by moving the table 5.

However, with this method, when workpiece 1 is tightened,
It is not used for conductive ceramics that cause chipping or springs that cause deformation.Also, for fixing special items such as workpieces whose shape is small and cannot be tightened sufficiently, or where there is insufficient tightening allowance. Conductive pastes and adhesives are used.

However, when using conductive paste, the adhesive strength is extremely weak and the workpiece may come off or move during the cutting process, making it impossible to obtain a highly accurate workpiece.

Furthermore, when using an adhesive, the adhesive force is sufficient, but since a considerable amount of insulating phase is present in the adhesive, the edges of the workpiece that have been electrically discharge-machined up to the adhesive will not be flat, resulting in so-called cracks.

Therefore, there were problems such as a large amount of material was lost, special measures were required for the processing procedure, and it was extremely difficult to remove the workpiece after processing.The present invention solves these drawbacks. The purpose is to solve this problem by fixing the workpiece with a plated surface to the workpiece support by soldering, so that the adhesion between the workpiece and the workpiece support is good, and even the adhesive layer can be processed. It is an object of the present invention to provide a cutting method using an electric discharge machine which has the effect that it is possible to perform the following operations, and that it is relatively easy to remove the workpiece after cutting.

That is, in the present invention, when a workpiece is attached to an electrical discharge machine, the surface of the workpiece is plated with a metal that can be soldered in advance, and the workpiece is attached to a solderable workpiece support by cutting the workpiece. Features.

The present invention will be explained in more detail with reference to the drawings below. Figure 1 is an explanatory diagram of a conventional cutting method using an electric discharge machine, and Figures 2, 6, and 4 are perspective views explaining the present invention in detail. FIG. 2 is an explanatory diagram for cutting into strips, FIG. 6 is an explanatory diagram for cutting a rod-shaped body into rounds, and FIG. 4 is an explanatory diagram for creating a convex shape from a thin plate. It is a diagram.

First, as shown in FIG. 2, the workpiece 1 is plated with a solderable metal on the surface in contact with the workpiece support 8.
Further, the work support 8 is attached to the table 4 using the tightening tool 3, and then fixed to the table 5.The support 8 is made of solderable metal copper or nickel. It is constructed from brass etc.

In this way, the work 1 is cut into strips by electrical discharge machining. In this case, if a cut is made in advance in the work support 8 at the same position where the wire 6 cuts the work 1, at least half the diameter of the wire 6, the wire 6 will move to the cut in the work support. When cutting is completed in this way, the work support 8 is completely cut to the end.
The dicing is completed by RF rotation and cutting in the same manner.

To remove the product cut in this way, if the adhesive area is small, press a little harder with your fingers, and the plated layer and product will easily peel off. In addition, if the adhesive area is large and cannot be peeled off with just finger pressure, the plating layer can be peeled off by first melting the solder, removing the product from the support, and performing a slightly stronger ultrasonic cleaning.

As another example, as shown in FIG. 6, in order to cut a workpiece 1 made of a material that is likely to chip at the end of cutting into rounds, the surface of the workpiece 1 is plated with a metal that can be soldered. The work 1 and the solderable metal wire 10 are joined with the solder 7, and this is fixed to the main body by adhering to the work support 8 with an adhesive 11 such as a hot melt adhesive, and then cut. The figure is an explanatory view of another embodiment of the present invention in which a convex shape is cut out from a thin plate using a wire-cut electric discharge machine, in which a workpiece 1 whose surface is plated is bonded to a workpiece support 8 with solder 7. It can be cut by electrical discharge machining using a hollow wire 6 of a different shape.

According to the present invention, in addition to the above, it is possible to cut springs, cut thin plates that may bend or sway during processing by fixing only one side, cut wires, and tighten wires that are too small or have a shape that is impossible. It can be applied to the cutting process for items that cannot be tightened by hand or for items where waste of material is extremely important.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a conventional electric discharge machine, and FIGS. 2, 6, and 4 are detailed explanatory diagrams of the present invention. Holder, 3...To tighten, 4...To install, stand, 5...Table, 6...
...Wire, 7...Solder, 8...Work support,
9...Power source, 10...Metal wire, 11...Adhesive Applicant: Denki Kagaku Kogyo Seiroku Company Figure 3 Figure 4

Claims (1)

[Claims] Cutting by an electric discharge machine characterized in that when a workpiece is attached to an electric discharge machine, the surface of the workpiece is plated with a metal that can be soldered in advance and is attached to a solderable workpiece support. Processing method.