Study on the Milling of Screw Type Vacuum Pump Rotor

• Main Author: 莊志偉
• Other Authors: Junz J. Wang
• Format: Others
• Language: zh-TW
• Published: 1999
• Online Access: http://ndltd.ncl.edu.tw/handle/49156625292265687951

碩士 === 國立成功大學 === 機械工程學系 === 87 === In this thesis, the four-axis and five-axis milling methods are developed for machining the screw type vacuum pump rotor which is designed using the ruled surface method. First, the surface equation represented in Plucker coordinate system is derived from the geometric parameter data of the rotor. The cutter location data are then generated for both four-axis and five-axis milling methods through homogeneous coordinate transformation between the machine and rotor coordinates . By integrating the structure transformation matrix of the machine tool with the cutter location data, the equation of the NC data needed for the four-axis and five-axis milling is established. Finally, based on the NC data equation and cutter location data, the post-processor routine is constructed to generate the NC data. Through milling simulation using VERICUT software and experiment with AL 6061-T6 material, the four-axis and five-axis milling methods presented in this thesis are validated for the machining of the screw type vacuum pump rotor.