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:
Apr. 09, 2013
Filed:
Feb. 08, 2012
Machining method, program, machining-program generating program and machining apparatus of press die
Kouichi Katoh, Numazu, JP;
Takamasa Itoh, Shimizu-cho, JP;
Yoshiaki Mikami, Chuo-ku, JP;
Norihiro Miyazawa, Chuo-ku, JP;
Hirofumi Shinohara, Fuji, JP;
Kouichi Katoh, Numazu, JP;
Takamasa Itoh, Shimizu-cho, JP;
Yoshiaki Mikami, Chuo-ku, JP;
Norihiro Miyazawa, Chuo-ku, JP;
Hirofumi Shinohara, Fuji, JP;
Toshiba Kikai Kabushiki Kaisha, Tokyo, JP;
Abstract
A machining method of a press die having a pierce cutter and a secondary relief-clearance area recessed inward relative to a profile of the pierce cutter. A plunge cutting tool has an edge portion protruding from an outer circumference of a tool body and can carve while rotating and moving in an axial direction of the tool body. While rotating the plunge cutting tool with an axis of the tool body being approximately parallel to a surface of the pierce cutter, the plunge cutting tool is relatively moved along the profile of the pierce cutter. The plunge cutting tool is also relatively moved in the axial direction of the tool body along the shape of the pierce cutter and the secondary relief-clearance area in a piercing direction each time the plunge cutting tool is relatively moved by a predetermined pitch.