滚珠丝杠副运动精度可靠性柔性分析
Flexible Analysis of Ball Screw Motion Accuracy Reliability

滚珠丝杠机构在高速重载并且要求精度高的情况下，考虑其构件因为受力产生变形，把钢珠和丝杠作为柔性构件对滚珠丝杠副进行可靠度计算。首先通过Solidworks进行三维建模，然后把模型导入ADAMS中进行参数化，利用ADAMS柔性体模块对丝杠和钢珠进行柔性化处理，进行刚性模型仿真和柔性模型仿真，并且利用MC和Insight模块产生随机数，求出刚性模型和柔性模型的可靠度。最后得到滚珠丝杠副柔性构件对位移可靠度影响较小，对速度和加速度的运动精度影响较大。
When the ball screw mechanism is at high speed, heavy load, and high accuracy requirements, considering the deformation of its members due to stress, steel balls and screw are used as flexible components to calculate the reliability of the ball screw pair. First, three-dimensional modeling is performed by Solidworks. Then, the model is imported into ADAMS for parameterization, using the ADAMS flexible body module to flexibly process the screw and steel balls, and perform rigid model simulation and flexible model simulation, and using MC and Insight modules to generate random numbers to obtain the reliability of the rigid model and the flexible model. Finally, it is concluded that the flexible construction of ball screw pair has little influence on the reliability of displacement and great influence on the motion accuracy of speed and acceleration.