Portable EDM punching machine based on single chip microcomputer control
                        JIANG Zhiqiang, CHEN Hucheng, LONG Xiangqian,LAI Zhihao, ZHU Fenyong, TANG Yuyang
            （School of Mechanical & Electronic Engineering, Guilin University of  Electronic Technology, Guilin 541004, China）

Abstract: Aiming at weight and efficiency problems of portable EDM drilling machine, the research status of EDM drilling machine were analyzed and summarized, a design plan that keep the slider stay to let guideway movement was put forward. The way that single chip microcomputer directly take the advantages of RC comparison circuit to simplify discharge circuit was studied , micrometer pedestal was used as a base of portable EDM drilling machine to adjust the perforated surface. The weight of portable EDM drilling was made reduce to less than 10 kg, tested data showed the material removal rate up to 15 mm3/min, and perforated surface easy to adjust. The results indicate that the optimized actuator, discharge circuit and perforated surface adjustment device reduce the weight of portable EDM drilling machine , improve working efficiency, the work is stable.

Key words: single chip microcomputer; electrical discharge machining（EDM）; punching machine