METHOD FOR ESTIMATING A VARIATION IN PRELOAD APPLIED TO LINEAR GUIDEWAY

A method for estimating a variation in a preload applied to a linear guideway of a machine tool includes steps of: a) obtaining, via each of vibration sensors, first and second vibration signals that are generated according to detection of vibration of a table disposed on the linear guideway respect...

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Bibliographic Details
Main Authors CHENG, Chih-Chun, CHENG, Wen-Nan, CHENG, Yin-Chun, CHENG, Hsi-Hsun, KUO, Yu-Hsin, YU, Kuan-Te, TSAI, Ping-Chun
Format Patent
LanguageEnglish
Published 08.11.2018
Subjects
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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Summary:A method for estimating a variation in a preload applied to a linear guideway of a machine tool includes steps of: a) obtaining, via each of vibration sensors, first and second vibration signals that are generated according to detection of vibration of a table disposed on the linear guideway respectively at first and second time instants; b) determining, via the computation module, first and second natural frequencies based on a theoretical mode shape and respectively on the first and second vibration signals; and c) determining, via the computation module, the variation in the preload based on the first and second natural frequencies.
Bibliography:Application Number: US201715585583