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:
Aug. 09, 2022
Filed:
Sep. 18, 2019
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 provided, using a floating capacitance to provide a machining target with improved surface roughness. An electrical discharge machining device 1 includes a current supply circuit 3 that supplies a current to a gap between an electrode 17 and a machining target 19 so as to provide electrical discharge machining. A floating capacitance portion 21 occurs between the electrode 17 and the machining target 19 in the electrical discharge machining. The floating capacitance portion 21 supplies its stored charge to the gap in the electrical discharge machining. A capacitor 11 stores a charge before the floating capacitance portion 21 is discharged. After the floating capacitance portion is discharged, the capacitor 11 charges the floating capacitance portion 21. The floating capacitance portion 21 is discharged again after it is charged. Such an operation generates a pulse current, thereby providing electrical discharge machining.