高承载工况下滚珠丝杠副失效形式分析  

Analysis of Failure Modes for Ball Screw in High Load Conditions

作　　者：徐令令[1] 范元勋[1] 

机构地区：[1]南京理工大学机械工程学院,江苏南京210094

出　　处：《机械制造与自动化》2015年第5期15-17,22,共4页Machine Building & Automation

摘　　要：以高承载工况下滚珠丝杠副为研究对象,依据弹塑性接触变形理论,建立滚珠与双圆弧滚道的接触模型,结合试验研究,发现了滚珠丝杠副在高承载工况下可能出现的3种失效形式,包括滚道面大变形导致的严重塑性流动、滚道面顶部断裂和滚珠卡死等。Aimed at ball screw in high load conditions, according to elastic-plastic mechanical theory, the contact model of the ball with double circular raceway is established. Combining the experimental research, this paper finds three kinds of failure modes ap- pearing in the ball screw： the severe plastic flows of raceway due to large deformation, the fracture at top raceway and the seizing ball.

关 键 词：滚珠丝杠副 高承载 失效形式 

分 类 号：TH133[机械工程—机械制造及自动化]