High-precision wire cut electrical discharge machining mechanism

Abstract

The invention discloses a high-precision wire cut electrical discharge machining mechanism. The high-precision wire cut electrical discharge machining mechanism comprises a wire storage cylinder, a wire frame, a pulsed power supply, working fluid, a workpiece, an electrode wire and guide wheels; the electrode wire is pulled out from the wire storage cylinder and is driven to perform reciprocating rectilinear movement on the surface of the workpiece through the guide wheels which are fixed on the wire frame; the working liquid is sprayed on the electrode wire which is in contact with the surface of the workpiece; the workpiece is connected with a positive electrode of the pulsed power supply; the electrode wire is connected with a negative electrode of the pulsed power supply. According to the above mode, the high-precision wire cut electrical discharging machining mechanism adopts a wire conveying system which is formed by the four guide wheels, so that the high spatial position accuracy and stability of the electrode wire can be guaranteed, and purposes of good surface quality and cutting accuracy are achieved.

Description

technical field [0001] The invention relates to the field of electric discharge wire cutting equipment, in particular to a high-precision electric discharge wire cutting mechanism. Background technique [0002] Wire cut Electrical Discharge Machining (WEDM for short) belongs to the category of electrical processing. It was discovered by the Lazarinko couple in the former Soviet Union when they studied the phenomenon and causes of switch contacts being damaged by spark discharge corrosion. The local metal can be melted, oxidized and corroded, thus creating and inventing the electric discharge machining method. The working principle is that free positive ions and electrons accumulate in the field and quickly form an ionized conductive channel. At this stage, a current is established between the two plates. As a result, countless collisions between particles form a plasma region, which quickly rises to a high temperature of 8,000 to 12,000 degrees, and some materials are inst...

AI Technical Summary

Problems solved by technology

[0003] However, wire electric discharge cutting machines often have some problems such as sudden wire breakage during the cutting process, and unstable wire feeding system leading to poor cutting accuracy and poor surface quality of workpieces.

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