Vibration transmission mechanical model between the shaft and housing of a high speed motor spindle
LIU Chengying1,3, ZHENG Feng2, WANG Liping1,3
1. Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China; 2. School of Mechatronics Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China; 3. Beijing Key Lab of Precision/Ultra-precision Manufacturing Equipments and Control, Tsinghua University, Beijing 100084, China
Abstract：Spindle vibration is an important factor affecting the machining accuracy of machine tools with the vibrations reflecting a large amount of working condition information about the machine tool. A vibration transmission mechanics model was developed to model the coupling between the shaft and the chassis to improve machining accuracy when measuring the acceleration of the main shaft outside the shell. Hertz theory was used to calculate the bearing stiffness because of unknown parameters in the mechanical model. The base stiffness was calculated using Ansys and Hooke's theory. The vibrations of a 170XDS20Z11 motorized spindle were analyzed with the results showing that the spindle vibrations can be efficiently and accurately measured by measuring the shell vibrations. This theory can be applied to indirect measurements of spindle vibrations to improve measurement accuracy.
刘成颖, 郑烽, 王立平. 高速电主轴中主轴-机壳振动传递力学模型[J]. 清华大学学报（自然科学版）, 2018, 58(7): 671-676.
LIU Chengying, ZHENG Feng, WANG Liping. Vibration transmission mechanical model between the shaft and housing of a high speed motor spindle. Journal of Tsinghua University(Science and Technology), 2018, 58(7): 671-676.
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2018, Vol. 58 
