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. 10, 2011
Filed:
Jan. 26, 2009
Yoshinori Tatsuda, Ishikawa-Ken, JP;
Yoichi Nishita, Ishikawa-Ken, JP;
Yoshinori Tatsuda, Ishikawa-Ken, JP;
Yoichi Nishita, Ishikawa-Ken, JP;
Tsudakoma Kogyo Kabushiki Kaisha, Ishikawa-Ken, JP;
Abstract
A support shaft of a spindle unit having a through hole in which wires are laid has a structure that can obtain much spatial room so as to prevent a break in cables and to be compatible with a high-output spindle motor. A machine-tool spindle headincludes a support headthat drives a spindle unitfor indexing around a turn axis (A-axis) of the spindle unitby rotatably supporting a pair of support shaftscoupled to the spindle uniton the A-axis by a pair of fork armsand bearings. The pair of support shaftshave through holesin which a plurality of wiresextending from the spindle unitare laid, the plurality of wiresare divided into two wire groups, and the wire groups are separately laid in the pair of support shafts