基于滚道型面参数和摩擦力矩匹配的滚珠丝杠副高效装配  

Efficient Assembly of Ball Screw Pair Based on the Matching of Raceway Profile Parameters and Friction Torque

作　　者：吴剑 欧屹[1] 王凯[1] WU Jian;OU Yi;WANG Kai(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学机械工程学院,南京210094

出　　处：《组合机床与自动化加工技术》2021年第7期146-149,共4页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：国家重大专项(2019ZX04010001)。

摘　　要：为实现滚珠丝杠副滚道磨损后摩擦力矩的快速恢复,基于赫兹理论,提出了基于丝杠、螺母型面参数和滚珠直径的滚珠丝杠副摩擦力矩计算模型。改变滚珠的直径,通过丝杠型面检测试验台和螺母型面试验台分别测量出丝杠、螺母的型面参数,计算出理论摩擦力矩。理论摩擦力矩与通过滚珠丝杠副摩擦力矩试验台得到的不同滚珠直径下的实际摩擦力矩相比较,最大偏差为5.96%,表明该模型的计算结果与实验结果一致性较高,总体精度满足要求。最后对摩擦力矩衰退的滚珠丝杠副进行型面检测,通过滚珠丝杠副摩擦力矩计算模型计算出丝杠螺母滚道磨损后,恢复摩擦力矩所需的滚珠大小,有利于快速装配。In order to realize the rapid recovery of the friction torque after the wear of the ball screw sub-raceway.According to Hertz theory,a calculation model for the friction torque of the ball screw pair was proposed,based on the screw,nut profile parameters and ball diameter.After changing the diameter of the ball,we calculate the theoretical friction torque,by measuring the profile parameters of the screw and nut through their profile test bench respectively.Compared with the actual friction torque under different ball diameters measured by the ball screw pair friction torque test bench,the maximum deviation is 5.96%.Showing that the calculated results of the model are consistent with the experimental results,and the overall accuracy meets the requirements.Finally,the profile inspection of the ball screw pair with declining friction torque is carried out.Calculate the ball size required to restore the friction torque after the wear of the screw nut raceway through the friction torque calculation model of the ball screw pair.This method helps to improve assembly efficiency.

关 键 词：型面参数 滚珠直径 摩擦力矩 快速装配 

分 类 号：TH16[机械工程—机械制造及自动化] TG65[金属学及工艺—金属切削加工及机床]