阿基米德斜撑离合器楔块型面修形设计及其性能分析  

Modification Design and Contact Property Analysis for Profiles of Archimedes Type Sprag Clutch

作　　者：严宏志[1] 赵聪[1] 刘志辉[1] 张诗颖[1] 王祎维 

机构地区：[1]中南大学高性能复杂制造国家重点实验室,长沙410012

出　　处：《中国机械工程》2016年第12期1598-1602,1608,共6页China Mechanical Engineering

基　　金：湖南省科技计划资助重点项目(2015JC3007)

摘　　要：在建立不同初始内楔角阿基米德型面模型基础上,对离合器接触性能(Hertz应力、周向应力、总变形)进行了分析,并与三圆弧型面离合器进行了对比。为了提高阿基米德型面斜撑离合器承载性能,通过增大其初始内楔角对阿基米德楔块型面进行修形,并对修形后离合器的接触性能进行了分析。分析结果表明:增大修形系数μ能减小接触应力,提高离合器强制连续的临界扭矩。此外,从自锁条件分析得到了最大修形系数μ_(max)。Contact properties of Archimedes type sprag clutch（including Hertz stress,circumferential stress and total deformation）were analyzed and compared with three-arc type sprag clutch on the basis of different initial inner wedge angle models.To improve the bearing capacity of Archimedes type sprag clutch,modification on sprag profile of Archimedes was conducted by increasing the initial inner wedge angle,and contact properties of clutch were analyzed after modification;The results show that contact stress is reduced and the critical torque is improved when increasing modification coefficient.Moreover,the maximum modification coefficientμis obtained from self-locking condition analysis.

关 键 词：斜撑离合器 修形 阿基米德曲线 接触性能 

分 类 号：TH133.4[机械工程—机械制造及自动化]