Abstract
Abstract To reduce the thermal deformation of ball screws, the process of nano coating preparation for coating on ball screws to reduce temperature rise and thereby thermal deformation was discussed in this article. Simultaneously, the cooling mechanism was presented. The thermal channels and the relatively even distribution of graphene in the nano coating were observed in scanning electron microscopic images. In terms of the preparation of nano coating, optimization design was carried out to obtain the optimized material ratio and nozzle flow through orthogonal experiment. The influence of design parameters of nano coating on reducing thermal deformation was also discussed. The experimental results show that the maximum temperature rise, thermal deformation, and time to reach thermal balance decreased by 12.5, 69.1, and 46.3%, respectively. The effectiveness of nano coating in reducing thermal deformation was validated experimentally.
Highlights
IntroductionBall screws play an important role in accuracy stability of machine tools based on their high efficiency and good
Ball screws play an important role in accuracy stability of machine tools based on their high efficiency and goodThermal error compensation is an effective measure to deal with the decrease in ball screw positioning accuracy
Studying on thermal performance of ball screws has attached much attention to improve the positioning accuracy of machine tools
Summary
Ball screws play an important role in accuracy stability of machine tools based on their high efficiency and good. Thermal error compensation is an effective measure to deal with the decrease in ball screw positioning accuracy. Thermal error modeling is the key factor in the thermal error compensation. In terms of thermal error modeling, there are usually two methods, finite element method (FEM) and data-driven method. Liu et al [2] investigated the dynamic behavior of adjustable preload double-nut ball screw using finite element simulation and experiments. Li et al [3] used FEM to simulate temperature fields of ball screw feed drive system.
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