Abstract
Background: The high-speed motorized spindle system is the main component and the most significant heat source of high-precision CNC machine tools in mechanical processing. Plenty of research shows that 60%~80% of the machining accuracy error comes from the thermal deformation of each part in automated manufacturing. Therefore, it is urgent to study the control method of thermal error for motorized spindle systems.
Objective: Some valuable conclusions are drawn through the introduction and discussion of thermal error control methods for motorized spindles in recent years, and we prospect the future research and development of thermal error control methods for motorized spindles.
Methods: The patents and papers based on the control methods of thermal error for motorized spindles are studied. The advantages and disadvantages of thermal error control methods and their research status are summarized.
Results: With the urging of social as an essential part of CNC machine tools, we cannot ignore the thermal error of high-speed motorized spindles. To improve the machining accuracy, increase efficiency and prolong life, etc., all need a motorized spindle with excellent thermal dynamic performance.
Conclusion: We analyze the structural characteristics and the primary heat sources of high-speed motorized spindles, and review a mass of patents and papers related to the motorized spindle thermal error control methods for investigation. By comparing these papers, some valuable conclusions are drawn to predict the future research and development of thermal error control methods for the motorized spindle.
Keywords: High-speed motorized spindle, thermal error, control method, patent, NC machine tools, machining accuracy.
Graphical Abstract
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