Influence of spatial position of double turntable swing on dynamic characteristics of five-axis machine tool

Advances in Mechanical Engineering

Research Article

Taorui Liu¹  Tai Yu¹  Yupeng Wang¹  Chunqiang Yuan¹  Shi Wu² 

[1] School of mechanical and power engineering, Harbin University of Science and Technology, Harbin, China;Shi Wu, School of mechanical and power engineering, Harbin University of Science and Technology, No. 52, Xuefu Road, Harbin, Heilongjiang Province 150080, China. Email: ;

关键词: Five-axis machine tool;    double turntable;    bearing joint;    spatial position;    dynamic characteristics;   

DOI  :  10.1177/16878132221139928

 received in 2022-08-21, accepted in 2022-11-02,  发布年份 2022

来源: Sage Journals

【 摘 要 】

In the machining of a five-axis machine tool with a double turntable, the dynamic characteristics of the machine tool are affected by different spatial positions of workpieces. Predicting the dynamic characteristics of machine tools at different spatial positions can effectively improve the machining accuracy of workpieces. In the present study, a five-axis CNC machine tool (Tuopu VMC-C50, China) is considered as the research object. Firstly, the bearing stiffness model of the double turntable rotary system is established, and the influence of the joint stiffness of the turntable bearing on the dynamic characteristics of the five-axis machine tool table rotary system is studied. Based on the established three-dimensional model and rigidity of the sliding joint surface of the machine tool, the machine tool modes at 81 working positions are analyzed. Accordingly, the influence of different swinging positions of the double turntable on the dynamic characteristics of the five-axis machine tool is studied. Finally, based on the three-dimensional Kriging prediction model, variations of the natural frequency and vibration amplitude of the system in the machining space for different swing table angles are analyzed.

【 授权许可】

CC BY   
© The Author(s) 2022

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