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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.:

US 10737333 B1

PDFFull Text
Date of Patent:
Aug. 11, 2020

Filed:

Jan. 23, 2019

Machine tool

Applicant:

Okuma Corporation, Niwa-gun, Aichi, JP;

Inventors:

Tomoki Hayashi, Aichi, JP;

Shoichi Morimura, Aichi, JP;

Assignee:

OKUMA CORPORATION, Niwa-Gun, Aichi, JP;

Attorney:

Cantor Colburn LLP

Primary Examiner:

Erica E Cadugan

Assistant Examiner:

Yasir A Diab

Int. Cl.
CPC ...
B23B 29/34 (2006.01); B23Q 3/155 (2006.01); B23Q 3/157 (2006.01); B23B 31/42 (2006.01); B23B 3/22 (2006.01); B23Q 7/04 (2006.01); B23B 29/24 (2006.01); B23B 31/40 (2006.01); B23B 29/20 (2006.01); B23B 3/16 (2006.01); B25J 15/04 (2006.01); B25J 15/00 (2006.01);
U.S. Cl.
CPC ...
B23B 29/242 (2013.01); B23B 3/162 (2013.01); B23B 29/20 (2013.01); B23B 31/40 (2013.01); B23B 31/42 (2013.01); B23Q 3/15513 (2013.01); B23Q 3/15553 (2013.01); B23Q 7/046 (2013.01); B25J 15/04 (2013.01); B23Q 2003/15586 (2013.01); B23Q 2003/155411 (2016.11); B25J 15/0057 (2013.01); Y10T 29/5114 (2015.01); Y10T 483/1705 (2015.01); Y10T 483/1719 (2015.01);
Abstract

A machine tool includes: a turret configured to hold a tool through a clamp mechanism; a workpiece main spindle device configured to rotatably hold a workpiece; a switching unit configured to change a clamp state of the clamp mechanism by using rotation torque of the workpiece main spindle device; and an in-machine robot configured to move the switching unit. The clamp mechanism includes a torque input hole to which rotation torque is applied to change the clamp state. The switching unit includes an input shaft coupled with the workpiece main spindle device, an output shaft coupled with the torque input hole of the clamp mechanism and configured to output torque to the torque input hole, and a transmission mechanism configured to transfer, to the output shaft, the rotation torque of the workpiece main spindle device input through the input shaft.

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