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:
Aug. 31, 2021
Filed:
Jul. 18, 2018
Nsk Ltd., Tokyo, JP;
Kouhei Dobashi, Fujisawa, JP;
NSK LTD., Tokyo, JP;
Abstract
An apparatus of measuring axial clearance of a ball screw device is capable of measuring axial clearance with high accuracy by easily attaching a ball screw device to be measured without requiring special attention. This apparatus includes a support unit that supports a nut as one member of the nut and a screw shaft threadedly engaged with each other, a measuring unit that measures a displacement amount of the screw shaft as the other member in an axial direction, a load applying unit that applies a load to the screw shaft in directions opposite to each other along the axial direction, and a posture correction unit that is provided between the screw shaft and the load applying unit to hold the nut and the screw shaft to be relatively displaceable.