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:
May. 01, 2012
Filed:
Jul. 10, 2008
Tomoaki Nakasuji, Chiyoda-ku, JP;
Yusaku Miyamoto, Chiyoda-ku, JP;
Yasunori Matsumoto, Chiyoda-ku, JP;
Tetuji Kawakami, Chiyoda-ku, JP;
Tomoaki Nakasuji, Chiyoda-ku, JP;
Yusaku Miyamoto, Chiyoda-ku, JP;
Yasunori Matsumoto, Chiyoda-ku, JP;
Tetuji Kawakami, Chiyoda-ku, JP;
Mitsubishi Electric Corporation, Chiyoda-Ku, Tokyo, JP;
Abstract
A method of improving working of grooves of a screw rotor, in particular, working of grooves side in working efficiency, a working apparatus, a working tool, and a method of manufacturing a screw compressor are provided. A method of controlling rotation of a work and turning of a tool at a time to form a screw tooth space based on a five-axis NC machine, and a special end mill having a cutting edge of a short length and a neck portion provided between the cutting edge and a shank portion to be made thin is used to perform working in grooves side finish working process.