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:
Mar. 09, 2021
Filed:
Oct. 09, 2018
Precision Machinery Research & Development Center, Taichung, TW;
Tadao Tsuneyoshi, Gresham, OR (US);
Peng-Jui Chen, Taichung, TW;
Chi-Cheng Kuo, Taichung, TW;
Tung-Yi Lu, Taichung, TW;
Hsing-Chieh Huang, Taichung, TW;
Precision Machinery Research & Development Center, Taichung, TW;
Abstract
A method for monitoring the spindle preload amount of a spindle by: Sobtaining a spindle preload amount through a PPC Preload Analyzer; and Sobtaining an axial force sensor output of the spindle through an axial force sensor, wherein the axial force sensor output is calibrated using the spindle preload amount that is obtained through the PPC Preload Analyzer; establishing a relationship between the spindle preload amount and the axial force sensor output, then regarding the axial force sensor output as the spindle preload amount, and then monitoring the spindle preload amount by monitoring the axial force sensor output.