精密滚珠丝杠副轴向振动激励因素的试验研究  

Experiment Study on Exciting Factors of Axial Vibration of Precision Ball Screw

作　　者：张佐营[1] 宋现春[2] 姜洪奎[1] 

机构地区：[1]山东大学机械工程学院 [2]山东建筑大学机电学院,济南250100

出　　处：《振动．测试与诊断》2008年第1期14-17,共4页Journal of Vibration,Measurement & Diagnosis

基　　金：国家自然科学基金资助项目(编号:50675124)

摘　　要：由于精密滚珠丝杠副的轴向振动是影响定位精度和噪声的重要因素,对多根型号为4020×1200的滚珠丝杠进行了在不同速度下的轴向振动试验。试验结果表明,滚珠丝杠副的轴向振动由一个随转速而变化的周期性激励因素引起,为确定此激励源,分析了不同激励因素。分析结果表明,滚珠进入返向器时的冲击是滚珠丝杠副轴向振动的主要激励因素。The axial vibration of precision ball screw mechanism is the major factor on its positioning accuracy and noise.Many factors result in the vibration,which include the waviness of balls and groove,the friction between moving ball and groove,foreign substance in rollaway nest and the impulse during the balls entering and exiting the return mechanism and etc.In this paper,vibration experiments on pairs of ball screw mechanism,CD4020×1200 type are performed with different speeds.Obviously,the vibration of the mechanism is caused by a periodically invigorative factor varying with rotating speed.Moreover,quite a few invigorative factors are calculated and analyzed to make sure the driving source.Combining these experiments and the theoretical analysis,it is concluded that the impulse between the balls and return mechanism mainly causes the axial vibration of the precision ball screw mechanism.

关 键 词：滚珠丝杠副 轴向振动 激励因素 冲击 

分 类 号：TH132.1[机械工程—机械制造及自动化]