小直径开缝衬套双轴柔性滚弯成形的三维有限元分析

摘要/Abstract

摘要：

基于双轴柔性滚弯技术原理,建立了采用0Cr15Ni7Mo2Al材料制备小直径开缝衬套过程的三维有限元模型,以指导实际小直径开缝衬套的制备。利用该模型分析了衬套应力应变分布、刚性轴受力变形情况、衬套成形曲率半径与刚性轴直径的关系及衬套成形曲率半径与带材尺寸的关系,并用滚弯试验验证了该模型的准确性。结果说明:带材滚弯变形随着进给量的增加而更均匀;刚性轴受力随其直径的减小而减小,刚性轴变形程度随其直径的减小而增大;衬套成形曲率半径随着刚性轴直径的增大而增大;衬套成形曲率半径随着带材宽度和厚度的增大而增大。

关键词: 有限元, 小直径开缝衬套, 双轴柔性滚弯, 0Cr15Ni7Mo2Al, 冷挤压

Abstract:

Based on the two-axle bending technique, a three-dimensional FEA was developed for the manufacturing process of small-diameter split sleeve of 0Cr15Ni7Mo2Al, in order to guide the actual manufacture of the small-diameter split sleeve. The model was verified with two-axle bending experiments. Stress strain distribution, deformation of rigid axle, the relationship among rigid axle diameter, workpiece size and curvature radius were analyzed. The simulation results show that workpiece deforms more equally with the increases of feed. The force of rigid axle becomes smaller with the increase of diameter, while deformation of rigid axle becomes lager with the decrease of diameter. The curvature radius increases with the increase of rigid axle diameter. The curvature radius increases with larger width and thickness of workpiece.

Key words: finite , element , analysis(FEA);smmall-diameter split sleeve;two-axle bending;0Cr15Ni7Mo2Al;cold extrusion

中图分类号:

TG306

龚靖平, 黎向锋, 左敦稳, 康晓军, 邱佳斌. 小直径开缝衬套双轴柔性滚弯成形的三维有限元分析[J]. 中国机械工程, 2015, 26(8): 1117-1124.

Gong Jingping, Li Xiangfeng, Zuo Dunwen, Kang Xiaojun, Qiu Jiabin. Three-dimensional FEA of Manufacturing Process of Small-diameter Split Sleeve by Two-axle Bending[J]. China Mechanical Engineering, 2015, 26(8): 1117-1124.

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