Review on Thermal Error Compensation for Feed Axes of CNC Machine Tools

doi:10.3901/JME.2021.03.156

Abstract

Abstract: The thermal deformation of the machine tool under the combined action of internal and external heat sources seriously affects the accuracy stability of the machine tool and the machining accuracy of components. How to suppress the thermal error of the machine tool is an important research field. The research progress of machine tool thermal error avoidance method and thermal error compensation method are introduced. The cause of the error of the linear feed axis is analyzed, and the thermal deformation process and mechanism of the ball screw with or without preload are explained. The optimization method of temperature measurement point location is introduced, as well as data-driven and physics-based thermal error modeling concepts, methods and characteristics. This paper introduces the thermal error test method of the rotary feed axis, and gives its modeling and compensation effects. Finally, the prospect of the research on the thermal error compensation technology of the feed axis is presented.

Key words: CNC machine tool, feed axis, thermal error, thermal compensation, accuracy stability, thermal harmony design

CLC Number:

TG156

LIU Kuo, HAN Wei, WANG Yongqing, LIU Haibo, SONG Lei. Review on Thermal Error Compensation for Feed Axes of CNC Machine Tools[J]. Journal of Mechanical Engineering, 2021, 57(3): 156-173.

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