冷滚打成形表层残余应力模型建立  

Modeling of surface layer residual stress for cold roll-beating forming

作　　者：崔凤奎[1,2] 刘飞 解克各[1,2] 丁泽瀚 李言 CUI Feng-kui;LIU Fei;XIE Ke-ge;DING Ze-han;LI Yan(School of Mechatronics Engineering, Henan University of Science and Technology, Luoyang 471003, China;Collaborative Innovation Center of Machinery, Equipment Advanced Manufacturing of Henan Province, Luoyang 471003, China;School of Mechanical and Precision Instrument Engineering, Xi＇an University of Technology, Xi＇an 710048, China)

机构地区：[1]河南科技大学机电工程学院,河南洛阳471003 [2]机械装备先进制造河南省协同创新中心,河南洛阳471003 [3]西安理工大学机械与精密仪器工程学院,陕西西安710048

出　　处：《塑性工程学报》2018年第1期142-150,共9页Journal of Plasticity Engineering

基　　金：国家自然科学基金资助项目(51475146、51475366)

摘　　要：为提高冷滚打成形工件的表面性能,实现对冷滚打成形过程中残余应力的控制,以渐开线花键为研究对象,采用轮廓法测量冷滚打成形花键齿廓不同位置的残余应力,依据实验结果采用响应曲面法建立冷滚打成形花键齿廓齿根处、分度圆处和齿顶处的残余压应力峰值和残余压应力层深与冷滚打成形参数的关系模型,对比分析了实验结果与模型的预测结果。研究表明所建立的残余压应力峰值模型的最大预测误差为3.3%,残余压应力层深模型的最大预测误差为6.1%,预测结果具有较高的可信度,可以进行不同冷滚打成形参数的齿廓空间残余应力和残余压应力层深度的预测。To improve the surface property of the workpieces formed by cold roll-beating and realize the control of residual stress during cold roll-beating,the involute spline was taken as the research object,the contour method was used for measuring the residual stress spatial distribution of cold roll-beating spline profile. According to the experimental results,the response surface method was used to establish the relationship models of the peak and the layer depth of the residual compressive stress at dedendom,pitch and addendum of spline tooth profile with cold roll-beating forming parameters. The experimental and prediction results were compared and the results show that the maximum prediction error of the established residual compressive stress model is 3. 3%,the maximum prediction error of the established residual compressive stress layer depth model is 6. 1%. With high reliability,the residual stress of tooth profiles and the layer depths of the residual compressive stress with different forming parameters can be predicted.

关 键 词：冷滚打 渐开线花键 残余应力 预测模型 响应曲面法 

分 类 号：TH161.14[机械工程—机械制造及自动化]