Pulse power supply energy transmission loop in reciprocating feed wire cut electrical discharge machining

Abstract

The invention discloses a pulse power supply energy transmission loop in reciprocating feed wire cut electrical discharge machining, which comprises a pulse power supply, an upper conducting block, alower conducting block, electrode wires, a workpiece and an upper computer. A first relay is additionally arranged between the negative electrode of the pulse power supply and the upper conducting block; a second relay is additionally arranged between the negative electrode of the pulse power supply and the lower conducting block; the upper conducting block and the lower conducting block are respectively connected with the electrode wires; the positive electrode of the pulse power supply is directly connected with the workpiece; and the upper computer enables the upper conducting block, the lower conducting block and the corresponding electrode wires to be alternately added into a circuit by controlling the first relay and the second relay. According to the pulse power supply energy transmission loop in reciprocating feed wire cut electrical discharge machining provided by the invention, the problems of energy balance and material removal amount balance of discharge points on the surface of the workpiece are solved, and the problem of middle waist bulging degree errors is relieved.

Description

technical field [0001] The invention belongs to the field of reciprocating wire electric discharge machining, and proposes a pulse power supply energy transmission circuit in reciprocating wire electric discharge machining, which is used to reduce the waist drum error on the workpiece surface during low power machining. 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 etch the workpiece. The electrode wire is controlled by the machine tool wire drum to reciprocate up and down. Most of the current energy transmission methods of pulse power supply are: the positive pole of the pulse power supply is connected to the workpiece, the negative pole of the pulse power supply is connected to the upper and lower conductive blocks on the machine tool, the conductive block is connected to the high-speed moving electrode wire, and the g...

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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