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:
Dec. 24, 2019
Filed:
Mar. 07, 2014
Seibu Electric & Machinery Co., Ltd., Fukuoka, JP;
Takashi Mitsuyasu, Fukuoka, JP;
Keisuke Tasaki, Fukuoka, JP;
Seibu Electric & Machinery Co., Ltd., Fukuoka, JP;
Abstract
An electrical discharge machining device is provided, using a floating capacitance to provide a machining target with improved surface roughness. An electrical discharge machining deviceincludes a current supply circuitthat supplies a current to a gap between an electrodeand a machining targetso as to provide electrical discharge machining. A floating capacitance portionoccurs between the electrodeand the machining targetin the electrical discharge machining. The floating capacitance portionsupplies its stored charge to the gap in the electrical discharge machining. A capacitorstores a charge before the floating capacitance portionis discharged. After the floating capacitance portion is discharged, the capacitorcharges the floating capacitance portion. The floating capacitance portionis discharged again after it is charged. Such an operation generates a pulse current, thereby providing electrical discharge machining.