摘要
以外循环式滚珠螺旋副为研究对象,通过力学分析建立了一种考虑滚珠尺寸误差、计算每个滚珠受力及滚珠螺旋副寿命的计算模型。结合一个具体的算例,研究了只存在一个滚珠误差、所有滚珠存在随机性误差两种情况下尺寸误差对滚珠受力情况及疲劳寿命的影响,绘制了滚珠最大接触应力曲线,计算了滚珠螺旋副的疲劳寿命。研究结果表明:提高滚珠加工精度,滚珠螺旋副的寿命也随之增加。
Taking ball screw with outer cycling device as the research object, by mea n s of mechanics analysis,a calculation model,which can calculate the contact stress of every ball and the fatigue life of ball screw with considering dimension errors, isput forward. Witha concrete e x ample, the influences of the dimension error on the contact stress and fatigue life of two situations , the first one is only one ball has dimension error and the second one is that every ball hasrandom dimension error, are studied. The maximum contact stress of balls is mapped , and the fatigue life of ball screw is calculated. Meanwhile the influences of machining accuracy on the ball screw＇s fatigue life have been analyzed. The fatigue life of ball screw increases as themachining accuracy increases.
出处
《华东理工大学学报（自然科学版）》
CSCD
北大核心
2017年第5期724-732,共9页
Journal of East China University of Science and Technology
基金
上海市设计学IV类高峰学科项目(DA17014)
