文献类型：期刊文献

英文题名：Analysis of stress and fatigue life of ball screw with considering the dimension errors of balls

作者：Zhen, Ni[1];An, Qi[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

年份：2018

卷号：137

起止页码：68

外文期刊名：INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES

收录：;EI(收录号：20180604776750);WOS:【SCI-EXPANDED(收录号:WOS:000427101200005)】；

基金：This work was supported by the project "Modern mechanical theory research and related products' research and development (DA17014)" of Shanghai Summit Discipline in Design and the National Natural Science Foundation of China [grant number 51505148].

语种：英文

外文关键词：Ball screw; Dimension errors; Mechanics analysis; Contact stress; Fatigue life

摘要：Ball screw is a kind of mechanism, it is widely used in machinery and may be loaded with axial and radial load in practice. In the past, people calculated the contact load of ball screw which only bear axial load and didn't take the influences of dimension errors of balls into consideration. The authors take ball screw with outer cycling device as the research object, establish a calculation model to calculate the contact stress and fatigue life of ball screw by mechanics analysis. With a concrete example, the authors study the contact stress and fatigue life of three situations, the first one is that every ball has no dimension error, the second one is that only one ball has dimension error, and the third one is all balls have random dimension errors. The results have been analyzed and explained. At the same time, the authors analyze the influences of axial load, radial load and size accuracy of balls on the fatigue life of ball screw. (C) 2017 Elsevier Ltd. All rights reserved.