Electric heating – Metal heating – Cutting or disintegrating
Reexamination Certificate
2005-05-31
2005-05-31
Evans, Geoffrey S. (Department: 1725)
Electric heating
Metal heating
Cutting or disintegrating
Reexamination Certificate
active
06900407
ABSTRACT:
In an electric discharge machine, wherein electric power is supplied between an electrode and a workpiece to machine the workpiece, a jumping motion is performed to temporarily increase a distance between the electrode and the workpiece. The electric discharge machine includes a detector for detecting a machining reaction force; a setting unit for setting a specified value of the machining reaction force; a comparator for comparing a detected value of the machining reaction force with a specified value of the machining reaction force; and a changing unit for changing a locus of the jumping motion so that the machining reaction force can be reduced if the comparator finds that the detected value of the machining reaction force is greater than the specified value of the machining reaction force.
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PCT/JP00/03097 filed May 15, 2000.
Akune Mitsuaki
Imai Yoshihito
Mohri Naotake
Nakagawa Takayuki
Ogawa Hajime
Evans Geoffrey S.
Mitusbishi Denki Kasushiki Kaisha
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