The Thermal Compensation Technology on CNC Machine Center

• Main Authors: Chien-Lang Wu, 吳建郎
• Other Authors: 曾柏昌
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/05669181490572100818

碩士 === 中興大學 === 機械工程學系所 === 95 === Thermally induced errors have been significant factors influencing machine tool accuracy. In order to alleviate this phenomenon, a real time compensation for spindle thermal error is presented. And the feasibility of this approach is also implemented. This study presents the process of thermal error testing. Analyze the issues of spindle thermal displacement upon the temperature, and build a spindle thermal displacement model by using multiple regression method. A microcontroller module is developed to deal with the model and communicate with the CNC controller, and compensate for the CNC controller by shifting the zero point of the machine coordinate system. After practical experiment, the results show that the errors can effectively restrain the thermal errors within 15μm.