A pulse power energy transmission circuit in reciprocating wire EDM wire cutting

Abstract

The invention discloses a pulse power supply energy transmission circuit in reciprocating wire EDM wire cutting, comprising a pulse power supply, an upper conductive block, a lower conductive block, an electrode wire, a workpiece and a host computer. The negative electrode of the pulse power supply is connected to the upper conductive block. A first relay is added between the blocks, a second relay is added between the negative electrode of the pulse power supply and the lower conductive block, the upper conductive block and the lower conductive block are respectively connected to the electrode wire, the positive electrode of the pulse power supply is directly connected to the workpiece, and the host computer By controlling the first relay and the second relay, the upper conductive block, the lower conductive block and the corresponding electrode wire are added to the circuit alternately. The invention solves the problems of equalizing the energy of the discharge points on the surface of the workpiece, equalizing the material removal amount, and the like, and relieves the problem of the waist drum degree error in the middle part.

Description

technical field [0001] The invention belongs to the field of reciprocating wire electric discharge wire cutting, and provides a pulse power supply energy transmission circuit in the reciprocating wire electric discharge wire cutting, which is used for reducing the waist bulge error of the workpiece surface during low-power processing. Background technique [0002] High-speed reciprocating wire EDM is a processing technology that uses pulse power to provide energy and uses spark discharge between the electrode wire and the workpiece to erode the workpiece. The electrode wire is controlled by the machine tool wire drum to reciprocate up and down. At present, most pulse power sources transmit energy as follows: the positive pole of the pulse power supply is connected to the workpiece to be processed, the negative pole of the pulse power supply is connected to the upper and lower conductive blocks on the machine tool, and the conductive blocks are connected to the high-speed movi...

AI Technical Summary

Problems solved by technology

Therefore, on the whole, the amount of material removed at the upper and lower ends of the processed workpiece is large, and the amount of material removed in the middle part is small, and the middle part protrudes, resulting in a waist drum; at the same time, when the discharge energy is large, the electrode wire will vibrate, which will also bring about the problem of waist drum degree error.

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