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:
Jul. 31, 2007

Filed:

Apr. 26, 2002
Applicants:

Hiroshi Shinohara, Kawagoe, JP;

Takayasu Saitou, Sayama, JP;

Umeo Tsuyusaki, Kawagoe, JP;

Toru Takahashi, Sakado, JP;

Inventors:

Hiroshi Shinohara, Kawagoe, JP;

Takayasu Saitou, Sayama, JP;

Umeo Tsuyusaki, Kawagoe, JP;

Toru Takahashi, Sakado, JP;

Assignee:

Citizen Watch Co., Ltd., Nishitokyo-Shi, Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23B 13/04 (2006.01);
U.S. Cl.
CPC ...
Abstract

A numerically controlled machine tool can simultaneously perform a variety of machining operations using work on a first main shaft and work on a second main shaft. A first tool post is movable together with a second main shaft in the direction of a main shaft axis and in a direction orthogonal thereto in a plane, while a second tool post is movable at least in the same biaxial direction as the directions of movement of the first tool post. A control device superposes the movement required for the first tool post to machine work on the movement required for the second tool post to machine work, so that the machining operation of the work by the tool on the first tool post and the machining operation of the work by the tool on the second tool post are simultaneously performed.


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