期刊
ENGINEERING FAILURE ANALYSIS
卷 128, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.engfailanal.2021.105597
关键词
Thermal-mechanical coupling; Motorized spindle; Thermal steady state; Deformation error; Finite element simulation
资金
- National Natural Science Foundation of China [51875446, 51875445]
This paper proposes a thermal-mechanical coupling calculation method for the deformation error of a motorized spindle. By calculating thermal load and force load, and analyzing their effects on the spindle, the deformation can be analyzed. The method is verified through finite element simulation and experiment.
Motorized spindle is one of the core components of precision machine tool. The precision of the motorized spindle will be subjected to thermal load and force load during its operation. These two kinds of loads will be coupled with the machining process, leading to the deformation error of a motorized spindle. So, a method of thermal- mechanical coupling calculation for deformation error of motorized spindle is proposed. Firstly, the thermal load and force load during operation of the motorized spindle are calculated, and the effect of force load on thermal load is also analyzed. On this basis, the changes of thermal load, force load and thermal boundary condition of motorized spindle are analyzed. With the increase of temperature, the heat generation and thermal boundary conditions of the bearing will change. Through iterative updating of heat generation and thermal boundary conditions, the deformation of the motorized spindle can be calculated in a thermal steady state. Finally, the thermal-mechanical coupling calculation method is verified by finite element simulation and experiment.
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