空心轴穿孔旋压复合成形的有限元仿真
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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.
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.
引文
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[3]汤传尧,樊文欣,王欣.基于灰色GM(0,4)模型的强力旋压连杆衬套成形质量的预测研究[J].热加工工艺,2018,47(5):159-161.
[4]杨建宁,周启雄,陈刘斌,等.316L钢气瓶热旋压成形裂纹分析[J].热加工工艺,2018,47(7):252-254.
[5]李众,樊文欣,孔维静,等.旋压工艺参数及退火温度对筒形件等效应变的影响[J].热加工工艺,2017,46(15):142-144.
[6]张涛,樊文欣,郭代峰,等.筒形件旋压的力学性能研究[J].热加工工艺,2017,46(13):157-159.
[7]李建,陶慕华,王利梅,等.AZ80镁合金车轮热旋压性能研究[J].热加工工艺,2017,46(1):149-151.
[8]陈东宝,樊文欣,佘勇,等.强力旋压工艺参数对表面粗糙度的影响[J].热加工工艺,2016,45(17):129-131.
[9]高晶晶.大型厚壁封头旋压成形的数值模拟与工艺分析[D].包头:内蒙古科技大学,2014.