Structural Analysis and Design of The Table-Type Milling Machine

• Main Authors: Shu-Cheng Wu, 吳書丞
• Other Authors: 翁豊在
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/w7f6ce

碩士 === 國立虎尾科技大學 === 機械設計工程研究所 === 100 === The purpose of this thesis was to perform the laser precision measurement, cutting force simulation and topology optimization design with SH-850, table-type-milling machine to improve the precision of milling machines and reduce the amount of materials. In the precision measurement, Renishaw laser adjust meter was used to measure the X,Y,Z axes separately. The deviation of the measure is due to the low precision of lead screws, imprecise of the rack assemblage, and the backlash of the gears. After measuring, the deviation data would be organized, for consideration in operating the table-type milling machine. The precision of the table-type milling machine, SH-850 decreases due to its inadequate stiffness. The finite element analysis software, ABAQUS, was used to simulate milling of SH-850 for the purpose of acquiring distribution of stress and deformation. Afterwards, the distribution was used as a frame of reference in topology optimization design. The thesis applied the topology optimization module developed by ABAQUS 6.11 and TOSCA to each part of the milling machine for topology optimization design. This approach was to avert the stress concentration, and to reduce structural deformation to improve the precision of milling machines, and extend the service life of the milling machine. Optimization design can find the low stress areas of the design and hollow out them to reduce the cost of their materials and the loading of servo-motors. Finally the simulation of the parts which have been redesigned was redone to prove that the pitfalls of both stress concentrations and deformations have been improved.