摘要
针对空心轴加工工艺复杂、材料利用率及加工效率低等问题,将某型空心轴穿孔及旋压成形工艺复合为穿孔旋压成形工艺,对其成形原理进行了分析。运用有限元软件Simufact建立了穿孔旋压复合成形仿真模型,对其在不同成形时间下的等效应力、等效应变等参数进行了有限元仿真,得到等效应力、等效应变的变化规律。结果表明:随着穿孔旋压成形的不断进行,最大等效应力及应变都逐渐向加工成形部位移动;不同成形时间下,最大等效应力及应变分布不同;随着距成形起始点的空心轴长度距离及距内侧厚度方向距离的增加,最大应变都先减小后增加。该研究能为空心轴穿孔旋压复合成形模具设计和工艺参数优化提供参考。
Aiming at the problems of complex machining technology, low material utilization rate and machining efficiency of a hollow shaft, the perforating process and spinning forming process of the hollow shaft were combined into the perforating-spinning forming process, and the forming principle was analyzed. The simulation model of perforating-spinning composite forming was established by using finite element software Simufact. The equivalent stress and strain were simulated under different forming time, and the variation law of equivalent stress and equivalent strain was obtained. The results show that the maximum equivalent stress and strain are gradually moving to the forming position with the forming of perforating-spinning. The maximum equivalent stress and strain distribution are different under different forming time. With the lengthform the initial for ming point and thickness form the inner wall of the hollow shaft increasing, the maximum strain decreases firstly and then increases. The research can provide a reference for the die design and process parameter optimization of hollow shaft perforating-spinning compound forming.
作者
孙兆丹
王宝中
吴建伟
SUN Zhaodan;WANG Baozhong;WU Jianwei(Department of Mechanical and Electrical Engineering,Langfang Yanjing Vocational and Technical College,Langfang065200,China;School of Mechanical Engineering,North China University of Science and Technology,Tangshan 063004,China)
出处
《热加工工艺》
北大核心
2019年第13期120-123,共4页
Hot Working Technology
基金
河北省教育科学“十二五”规划重点课题(13120004)
关键词
空心轴
穿孔旋压复合成形
有限元仿真
等效应力
等效应变
hollow shaft
perforating-spinning composite forging
finite element simulation
equivalent stress
equivalent strain
