A Magnetic Drive Actuator for Micro Electrical Discharge Machining
Electrical discharge machining has the capability of machining all conductive materials regardless of hardness,and has the ability to deal with complex shapes.However,the speed and accuracy of conventional EDM are limited by probability and efficiency of the electrical discharges.This paper describes a three degrees of freedom (3-DOF) controlled,wide-bandwidth,high-precision,long-stroke magnetic drive actuator.The actuator can be attached to conventional electrical discharge machines to realize a high-speed and high-accuracy EDM.The actuator primarily consists of thrust and radial magnetic bearings,thrust and radial air bearings and a magnetic coupling mechanism.By using the thrust and radial magnetic bearings,the translational motions of the spindle can be controlled.The magnetic drive actuator possesses a positioning resolution of the order of micrometer,a bandwidth greater than 100Hz and a positioning stroke of 2mm.
Electrical Discharge Machining Magnetic Drive Actuator Positioning
Xiao You Zhang Akio Kifuji Dong Jue He
Department of Mechanical Engineering,Nippon Institute of Technology,4-1,Gakuendai,Miyashiro-cho,Mina Interdisciplinary Graduate School of Science and Engineering,Tokyo Institute of Technology,4259 Naga
国际会议
广州
英文
303-306
2012-11-16（万方平台首次上网日期，不代表论文的发表时间）