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旋轮参数对强力旋压连杆衬套残余应力的影响
英文标题:Influence of spinning roller parameters on residual stress of power spinning connecting rod bushing
作者:汤传尧 樊文欣 吉梦雯 
单位:中北大学 
关键词:强力旋压 连杆衬套 锡青铜 旋轮参数 残余应力 
分类号:TG306
出版年,卷(期):页码:2018,43(3):89-94
摘要:
强力旋压成形后连杆衬套工件表面的残余应力影响着工件的尺寸精度、疲劳强度和硬度等,直接关系着连杆衬套的使用寿命。以锡青铜连杆衬套为研究对象,设计单因素实验法进行三旋轮错距旋压,利用Simufact有限元仿真软件进行数值模拟,分别研究3个旋轮关键参数——旋轮轴向错距、旋轮工作角和旋轮工作圆弧半径对连杆衬套成形件残余应力的影响。结果表明:强力旋压连杆衬套旋轮轴向错距在4 mm≤t≤6 mm较为合适;工作角在18°≤α≤28°较为合适;工作圆弧半径在4 mm≤r≤6 mm较为合适。此时连杆衬套的残余应力较小,使用寿命显著提高,为实际生产提供了可靠的依据。
The residual stress on the surface of connecting rod bushing has an influence on dimensional precision, fatigue strength and hardness of the workpiece after power spinning and the service life of connecting rod bushing is directly related. For tin-bronze connecting rod bushing, three-roller stagger spinning was studied by single-factor experiment method, and the numerical simulation was carried out by the finite element simulation software Simufact. Then, the influences of the stagger distance along the axis direction, the working angle and the working arc radius of spinning roller on the residual stress of connecting rod bushing were studied. The results show that for connecting rod bushing in the power spinning, the stagger distance of spinning roller along the axis direction of 4 mm≤t≤6 mm, the working angle of 18°≤α≤28° and the working arc radius of 4 mm≤r ≤ 6 mm are suitable. Thus, the residual stress of the connecting rod bushing is small, and the service life is improved significantly, which provides a reliable basis for actual production.
基金项目:
山西省自然科学基金资助项目(2012011023-2)
作者简介:
作者简介:汤传尧(1991-),男,硕士研究生 E-mail:724672688@qq.com 通讯作者:樊文欣(1964-),男,教授,博士 E-mail:fanwx@nuc.edu.cn.com
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