Research on feed-pulse collaborative control method in micro-electrical discharge machining  

作　　者：Qiang Gao Ya-Ou Zhang Xue-Cheng Xi Yuan-Ding Wang Xiao-Fei Chen Wan-Sheng Zhao 

机构地区：[1]School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai,200240,People’s Republic of China [2]State Key Laboratory of Mechanical System and Vibration,Shanghai,200240,People’s Republic of China [3]Shanghai Institute of Space Propulsion,Shanghai,201112,People’s Republic of China

出　　处：《Advances in Manufacturing》2024年第2期270-287,共18页先进制造进展（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.52175426,52075333);National Science and Technology Major Projects of China(Grant No.2018ZX04005001).

摘　　要：Reducing the short-circuit rate and increasing the effective discharge rate are important targets for improving the servo control effect of micro-electrical discharge machining(micro-EDM),as these two indicators are closely related to the machining efficiency and quality.In this study,a feed-pulse collaborative control(FPCC)method is proposed for micro-EDM based on two dimensions(space and time).In the spatial dimension,a feed control strategy with a discharge holding process is adopted.Meanwhile,in the time dimension,a forward-looking pulse control strategy is adopted,in which the pulse interval is adjusted based on a sequence analysis of feed commands and discharge states.Process experiments are carried out to determine the key parameters used in this method,including the discharge holding threshold and pulse interval adjustment value(T_(off_(adj))).The feed smoothness and discharge sufficiency analyses of the experimental results show that compared to the traditional double threshold average voltage method,the FPCC method reduces the number of long-distance retreats by 64%and improves the effective discharge time by 40%.

关 键 词：Micro-electrical discharge machining(micro-EDM) Electrode feed control Discharge pulse control Machining surface quality 

分 类 号：TH122[机械工程—机械设计及理论]