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微细喷油孔电火花加工机床的研制
李文卓^1,2,颜国正²,于云霞¹
(1.烟台大学机电与汽车工程学院，山东烟台264005 ;2.上海交通大学电子信息与电气工程学院，上海200030)

摘要:

设计开发了一台高精度、高性能，具有自主知识产权的微细孔电火花喷孔加工机床。该机床采用卧式布局旋转主神,主轴转速可调。采用基于压电陶瓷与步进电机结合的宏微伺服进给系统，能实现电极的微步距振动式进给。配有制作微细工具电极的反拷系统，能够在线获得所需的各种尺寸的工具电极。该机床能稳定加工各种柴油机喷嘴的喷孔，尤其适合加工孔径为0.05 -0.20 mm的喷孔，加工精度达0.001-0.005 mm,加工效率达到20~50 s/孔。

关键词: 微细喷油孔电火花加工机床宏微驱动柴油机

DOI：

分类号:

基金项目:山东省中青年科学家奖励基金项目(2004BS05003)

Development of micro spray-hole EDM machine tool

U Wen-zhuo^1,2,YAN Guo-zheng²,YU Yun-xia¹

(1. School of Electromechanical Automobile Engineering, Yantai University，Yantai 264005, Shandong Province, China;2. School of Electronic, Information and Electrical Engineering, Shanghai Jiaotong University，Shanghai 200030, China)

Abstract:

A high-precision and high-performance micro spray-hole EDM machine tool was designed and developed with inde-. pendent intellectual property right. The spindle of the machine tool is horizontal and rotary, and its speed is adjustable. The serve system adopts a macro and micro servo system with piezoelectric ceramic and step motor, which can realize a vibration, feed of electrode with micro-step. A reverse machining electrode system was outfitted for fabricating microelectrode with any dimension. The machine tool can process spray-holes of the different diesel engines' nozzles steadily, especially is suitable to process the spray-holes whose diameter is 0. 05 —0. 20 mm, with the precision of 0. 001 -0.005 mm, and the efficiency of 20 - 50 s/hole.

Key words: micro spray-hole electric discharge machining (EDM) machine tool macro and micro servo diesel engine