基于滚珠丝杠副滚道磨损的摩擦力矩计算与试验  

Calculation and test of the friction torque based on the wear depth of ball screw pairs

作　　者：潘承莹 祖莉[1] 周长光 欧屹[1] PAN Chengying;ZU Li;ZHOU Changguang;OU Yi(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：《振动与冲击》2021年第24期212-220,共9页Journal of Vibration and Shock

基　　金：国家科技重大专项(2019ZX04010001)。

摘　　要：为了反映滚珠丝杠副滚道磨损情况,综合考虑接触角、螺旋升角以及滚道磨损量对摩擦力矩的影响,基于滚珠与滚道之间的变形量,通过计算磨损量,建立新的摩擦力矩计算公式,并在滚珠丝杠副摩擦力矩试验台上对4010型和4016型双螺母滚珠丝杠副开展摩擦力矩试验。结果表明:摩擦力矩试验值与计算值之间的相对误差小于4.976%,验证了该研究摩擦力矩计算公式的准确性,并且随着运转时间增加,滚动体承载会越来越均匀,试验值与计算值相对误差越来越小,摩擦力矩计算公式的精确性逐步提高,进一步验证计算公式的实用性。In order to reflect the wear depth of a raceway,based on the amount of deformation between the ball and the raceway,by calculating the wear depth,the friction torque calculation formula of the ball screw pair under the stable wear stage was deduced,which considers the contact angle,helix angle,and the wear depth of the raceway.In the test part,the friction torque test of the 4010 and 4016 double nut ball screw pair was carried out on the screw pair friction torque test bench.The test results show that the error is less than 4.976% between the test value and the theoretical value.And with the increase of operating time,the error is getting smaller and smaller.The established formula for calculating the friction torque of the ball screw pair has higher accuracy,which further verifies the practicality of the calculation formula.

关 键 词：滚珠丝杠副 接触变形 磨损量 摩擦力矩 计算 

分 类 号：TH117.1[机械工程—机械设计及理论]