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:
Jul. 18, 2006
Filed:
Mar. 28, 2002
Hisashi Yamada, Tokyo, JP;
Ryogo Koba, Tokyo, JP;
Takuji Magara, Tokyo, JP;
Masao Akiyoshi, Tokyo, JP;
Hisashi Yamada, Tokyo, JP;
Ryogo Koba, Tokyo, JP;
Takuji Magara, Tokyo, JP;
Masao Akiyoshi, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A machining-fluid ejection device for a wire electric discharge machining apparatus includes a nozzle for ejecting machining-fluid into an inter-electrode gap between a workpiece (W) and a wire electrode (E), a casing () fixed to a machining head () disposed above or below the workpiece (W), a coupling member () for coupling the casing () and a nozzle (), having a predetermined elastic coefficient, and deforming according to the machining-fluid pressure; an assemblage of the coupling member () and the nozzle () has hollow portions, formed with an inlet side internal diameter (D) and an outlet side internal diameter (D) on a machining-fluid inlet side and outlet side respectively, whose sectional areas do not change, and a hollow portion, formed with a minimum internal diameter (D) between the machining-fluid inlet side and the outlet side, whose sectional area does not change. Machining productivity may be raised for nozzle contact machining and nozzle separation machining.