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:
Oct. 02, 2018
Filed:
Oct. 21, 2015
Applicant:
Okuma Corporation, Niwa-gun, Aichi, JP;
Inventor:
Yoichi Kawai, Aichi, JP;
Assignee:
OKUMA CORPORATION, Niwa-Gun, Aichi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05B 19/406 (2006.01);
U.S. Cl.
CPC ...
G05B 19/406 (2013.01); G05B 2219/37429 (2013.01);
Abstract
A numerical control device with a function to prevent a problem caused by a rapid stop of a processing operation due to a motor overheating during processing. A temperature comparator obtains a load ratio T/Tmax or Tw/Tmax which is a ratio of the motor temperature T or predicted temperature Tw to a maximum allowable temperature Tmax stored in a storage device. When the load ratio T/Tmax or Tw/Tmax is over a threshold Tp stored in a storage, the device is placed in an alarm mode to shutdown the power supply to the motor after the processing program is executed to the end of a sequence block or the end of the processing program.