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:
Jun. 28, 2022

Filed:

Dec. 21, 2017
Applicant:

Thk Co., Ltd., Tokyo, JP;

Inventors:

Akihiro Unno, Tokyo, JP;

Yuki Hayashi, Tokyo, JP;

Yuki Tanaka, Tokyo, JP;

Tomofumi Ohashi, Tokyo, JP;

Yusuke Asano, Tokyo, JP;

Katsunori Kogure, Tokyo, JP;

Assignee:

THK CO., LTD., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01M 13/04 (2019.01); G01L 5/00 (2006.01);
U.S. Cl.
CPC ...
G01M 13/04 (2013.01); G01L 5/0019 (2013.01);
Abstract

A lifespan diagnosis device for a motion guidance device including: a stress calculating means which calculates stresses during movement for each of virtual segments, the stresses during movement being stresses that occur in each segment during a movement of the moving member; a counting means which counts, for each of the segments, on the basis of the amount of displacement, the number of occurrences of the stresses during movement which repetitively occur with waving during a movement of the moving member along the track; and a diagnostic means which calculates, for each of the segments, a lifespan exhaustion ratio on the basis of magnitudes of the stresses during movement and the number of occurrences of the stresses during movement, and which diagnoses the lifespan of the motion guidance device on the basis of the calculated lifespan exhaustion ratios of the respective segments.


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