滚珠丝杠副返向器磨损的动力学仿真分析研究

发布时间：2018-08-06 14:22

【摘要】：滚珠丝杠副返向器磨损的动力学的仿真研究可为滚珠丝杠副返向器设计、安装以及故障诊断提供理论依据。文章应用多体动力学软件ADAMS建立了滚珠丝杠副的动力学仿真模型,分析了返向器磨损所造成的动力学性能变差的原因,以内循环滚珠丝杠副为例,通过分析返向器回珠曲线的几何特性,建立了滚珠在返向器中的速度方向变化模型,对滚珠出、入口处两种不同磨损位置的返向器进行了动力学性能对比分析。结果表明:返向器的磨损会造成滚珠速度方向的突变,致使楔紧效应增大,滚珠在通过磨损点时,会造成周期性的振动特性和接触力、接触时间的增大;回珠曲线在连接点处的曲率的减小,可提高返向器在入口处和出口处的耐磨损性能,降低滚珠的冲击和摩擦损失。
[Abstract]:The simulation study on the wear dynamics of the ball screw pair return direction device can provide the theoretical basis for the design, installation and fault diagnosis of the ball screw pair return direction device. In this paper, the dynamic simulation model of ball screw pair is established by using the multi-body dynamics software ADAMS. The causes of the deterioration of the dynamic performance caused by the wear of the backwarder are analyzed, and the inner circulation ball screw pair is taken as an example. Based on the analysis of the geometric characteristics of the ball return curve, the velocity direction variation model of the ball in the ball return device is established, and the dynamic performance of the ball return device with two different wear positions at the ball exit and the entrance is compared and analyzed. The results show that the wear of the ball return device will cause a sudden change in the direction of the ball speed and increase the wedge tightening effect. When the ball passes through the wear point, it will cause periodic vibration characteristics and contact force, and increase the contact time. The decrease of the curvature of the bead return curve at the joint point can improve the wear resistance of the return device at the entrance and outlet and reduce the impact and friction loss of the ball.
【作者单位】：山东建筑大学机电工程学院;山东博特精工股份公司;
【基金】：国家自然科学基金项目(51375279,51475267) 国家高档数控机床科技重大专项资助项目(2012ZX04002013)
【分类号】：TG659

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