发明授权
- 专利标题: Surface layer forming apparatus using electric discharge machining
- 专利标题(中): 表面层成型装置采用放电加工
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申请号: US360555申请日: 1994-12-21
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公开(公告)号: US5693240A公开(公告)日: 1997-12-02
- 发明人: Takuji Magara , Nagao Saito , Naotake Mohri
- 申请人: Takuji Magara , Nagao Saito , Naotake Mohri
- 申请人地址: JPX Tokyo JPX Nagoya
- 专利权人: Mitsubishi Denki Kabushiki Kaisha,Mohri; Naotake
- 当前专利权人: Mitsubishi Denki Kabushiki Kaisha,Mohri; Naotake
- 当前专利权人地址: JPX Tokyo JPX Nagoya
- 优先权: JPX3-357138 19911224
- 主分类号: B23H1/00
- IPC分类号: B23H1/00 ; B23H1/02 ; B23H1/04 ; B23H1/08 ; B23H9/00 ; C23C26/00 ; C23C26/02
摘要:
An apparatus and process for forming surface layers on electrodes by electric discharge machining. A machining gap, between an electrode and a workpiece is filled with a dielectric mixture containing metallic or submetallic powder. The apparatus uses a swinging mechanism to move the electrode during processing. The apparatus uses a high-voltage superposition circuit to superpose a voltage of 100-400 V across the gap. The apparatus uses a current limiting resistor of 100-300.OMEGA. to ensure that the main circuit supplies a low voltage of approximately 100 V to the machining gap. In a second embodiment, the apparatus prevents electrode cracking by dispersing the discharges throughout, and widening, the machining gap.