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论文类型：期刊论文

发表时间：2022-06-29

发表刊物：光学精密工程

所属单位：机械工程学院

期号：12

页面范围：3055-3061

ISSN号：1004-924X

摘要：To overcome the shortcomings in rapidly machining micro and small holes with a high-aspect-ratio by Electric Discharge Machine(EDM), such as slow cooling, poor debris flushing, high tool wear and complex manipulation, a rapid EDM machine for micro and small holes is developed based on analyzing the mechanics and characteristics of EDM. Laid up vertically,the machine applies a rotary-vibrate mechanism with tool rotating and workpiece vibrating to the rapid cooling and debris flushing,and adopts an industrial PC (IPC) with PCI card and PMAC card plugged to acquire data to implement the integratization of machining and testing. In order to solve the problem that discharge states are difficult to detect due to severely distorting sparking signals and unstable sparking states in EDM, a successive mapping detection method of discharge states based on two-stage fuzzy logic is proposed and a double-closed-loop control system is designed to achieve rapid response and precise control of the working process. Experiments show that this machine is suitable for rapidly manufacturing the micro and small holes with high-aspect-ratio (＞10) and diameters from 60 μm to 200 μm and has stable performance and high reliability.

备注：新增回溯数据