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:
Nov. 12, 2013
Filed:
Jul. 01, 2008
Yoshinori Tatsuda, Kanazawa, JP;
Yoshinori Tatsuda, Kanazawa, JP;
Tsudakoma Kogyo Kabushiki Kaisha, Kanazawa-shi, Ishikawa, JP;
Abstract
An index device for a machine tool includes a rotary shaft () to which a drive object is attached, a housing () surrounding the rotary shaft (), a bearing (BI, B) secured between the housing () and the rotary shaft () by a securing member (), and a drive (M) provided around the rotary shaft () and including a rotor (M, M) and a stator (M, M). The stator (M, M) is attached to the housing () and the rotor (M, M) is attached to the rotary shaft (). The rotary shaft (), the bearing (BI, B), the rotor (M, M), and the securing member () are connected together to form a built-in unit () that can be inserted into and extracted from an enclosure unit including a casing member () of the housing () and the stator (M, M), thus facilitating connection and disconnection of wiring between the stator of a DD motor mounted in a spindle head of a machine tool and a main body of the machine tool.