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. 01, 2003
Filed:
Mar. 23, 2001
Applicant:
Inventors:
Tadashi Tanaka, Numazu, JP;
Kazuo Nagashima, Shizuoka-ken, JP;
Assignee:
Toshiba Kikai Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B23C 9/00 ;
U.S. Cl.
CPC ...
B23C 9/00 ;
Abstract
In a multi-axis machine tool (M) including an angular dividing head (HD) having a spindle head ( ) mounted thereto, the positional correction includes determining an error representative vector componentwise representative of a plurality of positional errors with respect to a plurality of axes of the spindle head at a respective angular position dividable by the angular dividing head, and correcting an arbitrary positional error of the spindle head by calculating a component vector of the error representative vector associated with the respective angular position.