Dynamics Analysis of a Parallel Mill-turn Tool Spindle Head Driven by Dual-linear Motors Using Extended Transfer Matrix Method

作     者：WU Wenjing LIU Qiang 

作者机构：School of Mechanical Engineering and Automation Beihang University Beijing 100191 

出 版 物：《Chinese Journal of Mechanical Engineering》 (中国机械工程学报（英文版）)

年 卷 期：2011年第24卷第5期

页      面：859-869页

核心收录：

学科分类：08[工学] 0802[工学-机械工程] 081202[工学-计算机软件与理论] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：supported by National Key Technology R&D Program of China (Grant No. 2006BAF01B09) the Research Fund for Doctoral Program of Higher Education of China (Grant No. 200800060010) 

主　　题：NC machine tools dynamics modeling transfer matrix method(TMM) 

摘      要：The hybrid dynamics of multi-rigid-body and multi-flexible-body system becomes the mainstream of multi-body *** there lacks a compact approach to model the hybrid dynamics,especially in modern machine tool application,due to the difficulty of solving the hybrid equations or the limitation of current software when dealing with the hybrid *** extended transfer matrix method（E-TMM）,which extends elements in three-dimensional space with higher matrixes,is proposed to simplify the modeling process of the hybrid *** E-TMM modeling approaches of 3 basic elements including 3D vibrant rigid body,joint and flexible body are studied in details.A parallel mill-turn tool spindle head unit driven by dual-linear motors is chosen as a plant to demonstrate the E-TMM modeling *** using E-TMM,the spindle head unit is simplified as a topological network consisting of the three types of element,i.e.,3D vibrant rigid body,joint and flexible body,including 11 rigid bodies,14 joints and 1 3D-Timoshenko *** the dynamic model of the system can be easily obtained by deducing the element-network by means of state vector *** dynamic characteristics of the spindle head,such as natural frequencies,dynamic flexibility,*** be predicted by solving the obtained *** verification indicates that the E-TMM is valid with enough accuracy in the dynamic analysis of the parallel mill-turn tool spindle *** E-TMM is capable of modeling the dynamics of machine tool structure with no requirements of deducing and solving the sophisticated differential ***,the E-TMM provides a simple and elegant tool for hybrid dynamic analysis in future dynamic design of machine tools.