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针对滚珠丝杠副在外力作用下容易产生变形、振动等特点,以滚珠丝杠副为研究对象,应用Solid Works软件建立滚珠丝杠副三维装配体模型,经适当简化后导入到ANSYS Workbench软件中,在对模型设置约束条件和施加合理载荷后,对其进行静力结构有限元仿真分析,得出滚珠丝杠副中滚珠、丝杠、螺母在工作过程中的等效应力、应变。通过对装配体模型进行模态分析,得出不同支撑方式下滚珠丝杠副的固有频率和振型。结果表明:有限元仿真分析结果与真实情况相近,为滚珠丝杠副的优化设计、合理使用及避免共振提供了参考依据。
Aiming at the characteristics of deformation and vibration of ball screw pair under the action of external force, taking ball screw pair as the research object, using Solid Works software to build three-dimensional assembly model of ball screw pair, after appropriate simplification, import into ANSYS Workbench software After setting constraints on the model and applying a reasonable load, the finite element simulation analysis of the structure was carried out. The equivalent stress and strain of the balls, lead screws and nuts in the ball screw pair were obtained. Through the modal analysis of the assembly model, the natural frequencies and modes of the ball screw pair under different support modes are obtained. The results show that the simulation results of the finite element method are close to the real ones and provide a reference for the optimal design of the ball screw pair, rational use and resonance avoidance.