Electrolytic and mechanical combined machining servo control method and system based on short circuit rate

Abstract

The invention discloses an electrolytic and mechanical combined machining servo control method and a system based on a short circuit rate, and belongs to the technical field of electrolytic machining. In the electrolytic and mechanical combined machining servo control method and system based on the short circuit rate, the servo control method uses the short circuit rate, calculated by the servo control system, as judgment data to compare with a preset short circuit rate standard value to judge if relative feeding is needed according to the comparison result; and the servo control system comprises a current sampling circuit, a voltage sampling circuit, a comparison circuit, a counter, or an arithmetical unit and a CPU. The servo control method and system can control feeding and retreating of a grinding wheel in real time to prevent under-cutting and over-cutting phenomenon to accurately remove a passive film on the surface of a workpiece, so that the machining efficiency and the surface quality of the machined workpiece are improved, and the machining stability and the machining precision are improved; and the servo control method and system are simple, effective, convenient for actuation, wide in application range, high in timeliness and accuracy and high in economy and practicability.

Description

technical field [0001] The present invention relates to a servo control method and system for electrolytic mechanical composite machining, and more specifically, relates to a servo control method and system for electrolytic mechanical composite machining based on short circuit rate. Background technique [0002] Electrolytic mechanical composite processing is a composite processing method that combines electrolysis and mechanical grinding. It is often used for grinding high-hardness materials such as cemented carbide. Electrolytic mechanical composite machining integrates the advantages of electrolytic machining and mechanical grinding, and has great application prospects in aerospace and other fields. The stability and machining accuracy of electrolytic mechanical composite machining are the key points for the popularization and application of this technology. [0003] In the existing electrolytic mechanical composite machining process, the constant-speed feed method is of...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the low processing efficiency of electrolytic mechanical composite machining in the prior art, and the surface of the processed workpiece is prone to scratches or wear, and provides a servo control method for electrolytic mechanical composite machining based on short circuit rate And the system, adopt the technical scheme of the present invention, obtain the short-circuit rate in the electrolytic mechanical composite machining process through the servo control system, as the judgment basis of the servo control, judge whether the metal-based conductive grinding wheel needs relative feed, and then control the feed of the grinding wheel in real time Give back, prevent under-cutting and over-cutting, achieve the purpose of accurately removing the passivation film, ensure the smooth progress of processing, improve the processing efficiency of electrolytic mechanical composite processing and the surface quality of the processed workpiece

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