Abstract
Background: The internal structure of a high-speed motorized spindle is compact, and a large amount of heat is generated in the process of high-speed operation, which causes thermal deformation of the parts. The thermal characteristics of the motorized spindle become worse when the temperature increases, which seriously affects its machining accuracy.
Objectives: This paper studies the thermal error prevention method and thermal error modeling compensation method of the motorized spindle, and introduces the measures to suppress thermal errors, the optimization method of temperature measurement points, and the theoretical method of thermal error modeling.
Methods: The advantages and disadvantages of various thermal error suppression methods are reviewed by comparing the literature related to the thermal error of the motorized spindle.
Results: This paper reviews the thermal error suppression methods, and discusses the prospect and development direction of the thermal error suppression of the motorized spindle.
Conclusion: High-speed motorized spindle is the core component of CNC machine tools, reducing thermal deformation can greatly improve machining accuracy. The thermal error can be reduced by optimizing the design of the structure of the key parts of thermal deformation, using a comprehensive thermal error prediction model, and improving the ability of the thermal error prediction model to maintain accuracy for a long time.
Keywords: High-speed motorized spindle, accuracy, thermal error suppression, thermal key point optimization, CNC, modeling compensation.
Graphical Abstract
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