The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 14, 1997
Filed:
Oct. 13, 1995
Masahiro Muro, Toyonaka, JP;
Takeshi Masaki, Hirakata, JP;
Yoshihiro Ikemoto, Hirakata, JP;
Yoshinori Furusawa, Takarazuka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka-Fu, JP;
Abstract
In an electric discharge machine and machining method for processing an object through electric discharge by impressing a voltage between a processing electrode and the object, the processing electrode and object are relatively vibrated by a vibrating part using a piezoelectric element while a gap between the processing electrode and object is properly retained at all times. The electric discharge is accelerated when the gap is small, whereas the insulated state is maintained when the gap is large. This kind of condition is stably produced in accordance with a frequency of the vibration. If the frequency is set in the range of 50-500 Hz, a shortcircuit or an arc state is less likely to occur. The vibration is effective to quickly discharge processing debris at the discharging gap.