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:
Jul. 01, 2014
Filed:
Jun. 14, 2011
Kun-fang Huang, Taichung, TW;
Tsair-rong Chen, Changua County, TW;
Chia-hui Tang, Taichung, TW;
Wen-ren Yang, Taichung, TW;
Paul Chang, Taichung, TW;
Kun-Fang Huang, Taichung, TW;
Tsair-Rong Chen, Changua County, TW;
Chia-Hui Tang, Taichung, TW;
Wen-Ren Yang, Taichung, TW;
Paul Chang, Taichung, TW;
Buffalo Machinery Company Limited, Taichung, TW;
The Department of Engineering, National Chang-Hua University of Education, Changhua County, TW;
Abstract
A milling machine has a carriage, a main spindle seat extending along an axis, and a motor operable to drive displacement of the main spindle seat relative to the carriage along the axis. A deflection correction system includes a control unit, a displacement sensor, at least one pressure cylinder, and a pressure sensor. The pressure cylinder includes a cylinder body, and a control rod extended retractably into the cylinder body. The control unit is configured to determine a pressure range as a function of displacement detected by the displacement sensor, and to maintain fluid pressure in the pressure cylinder within a pressure range, thereby controlling the control rod via the cylinder body to position the second end portion of the main spindle seat relative to the axis.