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. 26, 2017
Filed:
May. 21, 2015
Applicant:
Fanuc Corporation, Yamanashi, JP;
Inventors:
Kenzo Ebihara, Yamanashi, JP;
Takeshi Ooki, Yamanashi, JP;
Assignee:
FANUC CORPORATION, Yamanashi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23Q 3/18 (2006.01); B23B 31/28 (2006.01); B23Q 3/12 (2006.01); B23B 31/02 (2006.01); B23B 51/12 (2006.01);
U.S. Cl.
CPC ...
B23Q 3/186 (2013.01); B23B 31/02 (2013.01); B23B 31/28 (2013.01); B23Q 3/12 (2013.01); B23B 51/12 (2013.01); B23B 2260/10 (2013.01); Y10T 279/23 (2015.01);
Abstract
A tool gripping mechanism includes a tool holder and a shaft to which the tool holder is attached. The shaft is fixed to a rotary shaft of a spindle device. A plurality of magnets are disposed in pairs on concentric circles on surfaces of the tool holder and the shaft which face each other. When the tool holder is in a specific phase with respect to the shaft, the magnets of the tool holder and the magnets of the shaft attract each other, and the tool holder is aligned with respect to the shaft in that phase.