发明授权
- 专利标题: Electric discharge machining apparatus
- 专利标题(中): 放电加工机
-
申请号: US10706962申请日: 2003-11-14
-
公开(公告)号: US06881918B2公开(公告)日: 2005-04-19
- 发明人: Hidetaka Miyake , Yoshihito Imai , Takayuki Nakagawa
- 申请人: Hidetaka Miyake , Yoshihito Imai , Takayuki Nakagawa
- 申请人地址: JP Tokyo
- 专利权人: Mitsubishi Denki Kabushiki Kaisha
- 当前专利权人: Mitsubishi Denki Kabushiki Kaisha
- 当前专利权人地址: JP Tokyo
- 代理机构: Leydig, Voit & Mayer, Ltd.
- 优先权: JP2003-279258 20030724
- 主分类号: B23H7/26
- IPC分类号: B23H7/26 ; B23H7/28 ; B23H7/30 ; B23H1/00
摘要:
An electric discharge machining apparatus has improved responsive drivability and improved machining speed. A tool electrode has a tip end directed toward a work piece, a voltage applied between the tool electrode and the work piece generating a discharge. A drive shaft is connected with the tool electrode. An electrode driving device has magnetic bearings for moving the drive shaft in three directions, including a Z-axis direction, which is an axial direction of the drive shaft, a Y-axis direction perpendicularly crossing the Z-axis direction, and an X-axis direction perpendicularly crossing the Y-axis direction and Z-axis direction, by supplying electric current to electromagnetic portions to control magnetic attraction. A movable coupling is connected with an end of the drive shaft and is movable in the three directions. An electric motor is connected with an end of the coupling for rotating the drive shaft through the coupling.
公开/授权文献
- US20050016965A1 ELECTRIC DISCHARGE MACHINING APPARATUS 公开/授权日:2005-01-27