DOE-FEM Based Design Improvement to Minimize Thermal Errors of a High Speed Spindle System

• Main Authors: Jyun-Rong Zhuang, 莊俊融
• Other Authors: An-Shik Yang
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/qh6x3f

碩士 === 國立臺北科技大學 === 製造科技研究所 === 105 === Thermal error caused by the thermal deformation is one of the most important concerns influencing the accuracy of machine tools. In this investigation, a thermal-structure model is developed by the finite element method (FEM) to effectively simulate thermal characteristics for predicting the transient temperature field and thermal deformation of a high speed spindle system. Since the machining error must be estimated to achieve high quality and precision of machining products, this study applied the design of experiment (DOE) method to predict machining errors. The ANOVA demonstrated that the temperatures measured from certain detection points were more significant factors than those from other points on the machining errors. The second-order regression model was adequate to forecast the response variables generated by MATLAB. The implementation of this model in the machine tool under study is expected to reduce its thermally induced deformation by 80% in specified working conditions at varied speeds for a spindle system.