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:
May. 14, 2019
Filed:
Oct. 14, 2011
Koji Hasegawa, Ichinomiya, JP;
Koji Kito, Toyota, JP;
Takashi Matsui, Toyoake, JP;
Nobumitsu Hori, Ichinomiya, JP;
Osamu Higashimoto, Kashiwara, JP;
Koji Hasegawa, Ichinomiya, JP;
Koji Kito, Toyota, JP;
Takashi Matsui, Toyoake, JP;
Nobumitsu Hori, Ichinomiya, JP;
Osamu Higashimoto, Kashiwara, JP;
JTEKT CORPORATION, Osaka-shi, JP;
Abstract
A spindle condition detection device for a machine tool includes: bearing load detecting means for detecting a load on a bearing that rotatably supports a spindle of a machine tool; and present usage ratio calculating means for calculating, based on the load detected by the bearing load detecting means, a present usage ratio that is a ratio of usage of the bearing with respect to a prescribed operating life of the bearing, which is achieved over a period until a present moment.