球体扩径连接装配式凸轮轴装配过程分析

吉林大学学报(工学版) ›› 2011, Vol. 41 ›› Issue (增刊1): 115-120.

球体扩径连接装配式凸轮轴装配过程分析

乔健¹, 寇淑清², 孔巧玲², 乔建毅³

1. 中国科学院长春光学精密机械与物理研究所, 长春 130033;
2. 吉林大学辊锻工艺研究所, 长春 130022;
3. 长春工业大学材料科学与工程学院, 长春 130022

收稿日期:2010-08-28 出版日期:2011-09-01 发布日期:2011-09-01
通讯作者: 寇淑清(1962 ),女,教授.博士生导师.研究方向:精密高效加工技术与自动化装备,CAD/CAE/CAM一体化模具工程.E-mail:kousq@jlu.edu.com. E-mail:kousq@jlu.edu.com
作者简介:乔健(1980 ),男,副研究员.博士.研究方向:装配式凸轮轴连接技术及自动化装备,光电仪器总体设计.E-mail:qiaojj99065@163.com.
基金资助:
“十五”国家科技攻关项目(2003BA213C,2004BA907A19);吉林大学“985工程”项目

Analysis of hollow camshaft assembled process on expanding tube connection by pushing through a ball

QIAO Jian¹, KOU Shu-qing², KONG Qiao-ling², QIAO Jian-yi³

1. Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China;
2. Roll Forging Research Institute, Jilin University, Changchun130022, China;
3. College of Materials and Engineering Sciences, Changchun University of Technology, Changchun 130022, China

Received:2010-08-28 Online:2011-09-01 Published:2011-09-01

摘要/Abstract

摘要：

介绍了装配式凸轮轴钢球扩径连接的连接机理,采用数值模拟方法对钢球扩胀过程中凸轮与空心轴体的等效应力、残余接触压力的分布进行了研究。分析了装配后轴体壁厚的减薄量和凸轮内表面的径向变形情况。结果表明:扩径过程中最大等效应力出现在轴体内表面,且经扩径后凸轮与轴体的最大残余应力出现在临界连接处,相应凸轮该位置的径向位移最大,而轴体与凸轮的扩胀部位对应的径向位移最小,壁厚减薄量却最大。经球体扩径连接试验显示,数值模拟预测结果合理、准确、可靠,可为装配机的设计和装配式凸轮轴的生产提供依据。

关键词: 机械设计, 装配式凸轮轴, 球体扩径连接, 装配过程, 数值模拟

Abstract:

The connection mechanism and advantage of hollow assembled camshaft on expanding tube connection by pushing through a ball was introduced.The numerical simulation was used to analyze the equivalent von Mises stress distribution and residual contact pressure of the shaft and the cam lobes in process of expanding tube connection.The radial displacement and hollow shaft reduction of assembled camshaft on expanding tube connection by pushing through a ball were achieved.The results show the maximum equivalent von Mises stress is located internal surface of shaft.The maximum residual contact pressure between the shaft and the cam lobes appears around both ends of cam hole,and it is the maximum radial displacement.The connection part of hollow shaft is the minimum radial displacement,and also it is the maximum wall thickness reduction.According to the expanding tube connection experiments by pushing through a ball,the experimental results are in agreement with the numerical simulation results.It illustrates that the numerical simulation results can guide perfectly the manufacture of assembled camshaft and design of assembled equipments on expanding tube connection by pushing through a ball.

Key words: mechanical design, hollow assembled camshaft, expanding tube connection by pushing through a ball, assembled process, numerical simulation

中图分类号:

U464.134

乔健, 寇淑清, 孔巧玲, 乔建毅. 球体扩径连接装配式凸轮轴装配过程分析[J]. 吉林大学学报(工学版), 2011, 41(增刊1): 115-120.

QIAO Jian, KOU Shu-qing, KONG Qiao-ling, QIAO Jian-yi. Analysis of hollow camshaft assembled process on expanding tube connection by pushing through a ball[J]. 吉林大学学报(工学版), 2011, 41(增刊1): 115-120.

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