滚珠丝杠螺母副附加摩擦力矩分析计算和研究  

Analysis calculation and research on additional friction moment of ball screw mechanism

作　　者：张政泼 吕勇 蒋桂平 徐晓华 黄桂云 谭芳 ZHANG Zhengpo;LV Yong;JIANG Guiping;XU Xiaohua;HUANG Guiyun;TAN Fang(College of Mechanical Engineering,Guilin University of Aerospace Technology,Guilin 541004,CHN;Guilin Guanglu Measuring Instrument Co.,Ltd.,Guilin 541213,CHN)

机构地区：[1]桂林航天工业学院机械工程学院,广西桂林541004 [2]桂林广陆数字测控有限公司,广西桂林541213

出　　处：《制造技术与机床》2020年第9期160-164,共5页Manufacturing Technology & Machine Tool

基　　金：广西桂林市科技计划项目(201801004-15)。

摘　　要：由滚珠丝杠螺母副预紧力而产生的附加摩擦力矩是滚珠丝杠传动系统驱动力矩的组成部分.通过分析论证指出,滚珠丝杠双螺母间的作用力是随着轴向负载的变化而显著变化的,从而附加摩擦力矩也随之明显变化.在进行丝杠传动系统驱动力矩的精确分析和计算时应考虑这些变化影响,现行的结论并没有给予明确和相关计算方法.为此推导出了双螺母间相互作用力的变化规律及其解法,进而推导出新的附加摩擦力矩的计算式及其变化系数表达式;讨论了附加摩擦力矩和驱动力矩随轴向负载的变化规律,以及在总力矩校核中确定附加摩擦力矩的原则.通过试验加以验证,新的计算方法和结论是合理的.The additional friction moment of ball screw as a result of preload is constituent part of the driving moment of screw drive system.It is pointed out by means of analysis the acting force between two screw nuts is varied obvious along with axial load,so the additional friction moment is also,that is should taken into account in accuracy analysis and calculation,but it is not indeterminate and also there are not correlate calculation methods in currently conclusion about that.For this purpose the variety rule and solution of interaction acting force between two screw nuts are infered out,and then the new calculation formula and variety ratio representation of additional friction moment are infered out.The variety rule of additional friction moment and driving moment along with axial load are discussed moreover,and also confirmation principles of additional friction moment in checking process of total moment are discussed.It is verified through experiments that the new calculation method and conclusion are reasonable.

关 键 词：滚珠丝杠螺母副 预紧力 附加摩擦力矩 计算 

分 类 号：TG502.1[金属学及工艺—金属切削加工及机床] TH132[机械工程—机械制造及自动化]