Wire electrical discharge interpulse or pulse-width PID control constant current probability pulse power supply

Abstract

The invention discloses a wire electrical discharge interpulse or pulse-width PID control constant current probability pulse power supply, and belongs to the technical field of wire electrical discharge. The wire electrical discharge interpulse or pulse-width PID control constant current probability pulse power supply comprises a direct current power supply, a driving circuit, a power amplification circuit, a discharge gap, a Hall current sensor, a current probability detection module and a control module; the direct current power supply is connected with the driving circuit; the driving circuit, the power amplification circuit, the discharge gap, the Hall current sensor, the current probability detection module and the control module are sequentially connected to form a loop; the currentprobability detection module is used for detecting the current in the discharging process and carrying out comparison with a standard value; the control module calculates a current probability after receiving a comparison signal, and carries out control on an interpulse / pulse-width by using an incremental PID control method on the basis so as to control the real-time current probability. The powersupply is particularly suitable for cutting a semiconductor material, cutting efficiency can be improved, and stable and automatic cutting of the semiconductor material is implemented.

Description

technical field [0001] The invention belongs to the technical field of wire electric discharge machining, and relates to a current probability control method in wire electric discharge cutting, in particular to a constant current probability pulse power supply controlled by pulse-to-pulse or pulse width PID in wire electric discharge cutting. Background technique [0002] The basic working principle of wire electric discharge cutting technology is to use a continuously moving thin metal wire (called electrode wire) as an electrode to perform pulse spark discharge on the workpiece to remove metal and cut into shape. Its characteristics are as follows: [0003] (1) There is no significant mechanical cutting force during processing, regardless of the hardness and stiffness of the workpiece, as long as it is conductive or semi-conductive, it can be processed. However, non-metallic conductive materials cannot be processed. [0004] (2) Small holes and parts with complex shapes ...

AI Technical Summary

Problems solved by technology

[0012] In order to solve the problem that the general wire cutting machine tool cannot realize the automatic and stable processing of semiconductors, the present invention provides a pulse-to-pulse or pulse width PID control constant current probability pulse power supply for wire electric discharge processing based on current probability detection, which is applied to wire electric discharge processing. Using this power supply can realize constant current probability processing and improve processing stability

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