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:
Sep. 30, 2014
Filed:
Jun. 28, 2011
Ching-wei Wu, Taichung, TW;
Ying-shing Shiao, Changhua County, TW;
Chia-hui Tang, Taichung, TW;
Yu-che Wang, Taichung, TW;
Paul Chang, Taichung, TW;
Ching-Wei Wu, Taichung, TW;
Ying-Shing Shiao, Changhua County, TW;
Chia-Hui Tang, Taichung, TW;
Yu-Che Wang, Taichung, TW;
Paul Chang, Taichung, TW;
Buffalo Machinery Company Limited, Taichung, TW;
The Department of Electrical Engineering, National Chang-Hua University of Education, Changhua County, TW;
Abstract
A milling machine has a base, a work platform mounted movably on the base, and a ruler mounted on the work platform. The work platform is movable relative to a base axis. The thermal compensation system includes a sensor and a control unit. The sensor is configured to be mounted on the base for sensing a position of each of the work platform and the ruler relative to the base axis. The control unit is coupled to the sensor, and determines a work platform displacement and a ruler displacement according to the positions sensed by the sensor. The control unit further calculates a compensation value based on the work platform displacement and the ruler displacement. The control unit is configured to correct the position of the work platform relative to the base axis according to the compensation value.