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.

Date of Patent:
May. 01, 2012

Filed:

Apr. 10, 2006
Applicants:

Motoki Uchikawa, Tochigi, JP;

Tomoyoshi Miyagi, Tochigi, JP;

Norifumi Hirao, Tochigi, JP;

Kaname Goto, Tochigi, JP;

Takayuki Motojima, Tochigi, JP;

Inventors:

Motoki Uchikawa, Tochigi, JP;

Tomoyoshi Miyagi, Tochigi, JP;

Norifumi Hirao, Tochigi, JP;

Kaname Goto, Tochigi, JP;

Takayuki Motojima, Tochigi, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23Q 3/157 (2006.01);
U.S. Cl.
CPC ...
Abstract

A multi-spindle head exchangeable machine tool is provided with a plurality of multi spindle heads movably mounted on an annular rail. When a workpiece is machined by driving a rotary tool by a machining unit, multi spindle heads of the plurality of multi spindle heads being out of use can be separated from the machining unit. Further, a connecting device is provided with an inner slider, ball bearings fitted to an outer periphery of the inner slider, an outer slider, and a coil spring to press the outer slider toward a stopper member.


Find Patent Forward Citations

Loading…