Some of the cylindrical aluminum alloy blank need to be topped tightly with the end of the top in the spin-ning process. The soft blank and the larger top tight force lead to the end of the top embedding the blank and slight deformation of blank. The local deformation of blank will cause the change of thickness deduction and the deviation of spinning process parameter. Dimensional accuracy of spinning products is hard to guarantee. Only by repeated spinning process experiment to correct the process parameter, the final products can meet the design requirement. This article proposes a calculation method of the top end force and exert it upon the blank and establish a simulation model of alu-minum alloy blank cylindrical pieces based on Ansys. The result is in accordance with the simulation one by the simula-tion experiment. The simulation model can be used for guiding spinning production and save a lot of blank experiment cost and spinning process experiment time.%部分筒形铝制毛坯在强旋过程中需要利用尾顶将其顶紧在芯模上,但由于毛坯较软以及所需顶紧力较大等原因,导致尾顶嵌入毛坯,使毛坯件发生轻微变形的现象,毛坯的局部变形会造成减薄量的改变,从而导致旋压工艺参数设置的偏差,最终使旋压制品的尺寸精度难以保证,需要经过反复的旋压工艺实验修正工艺参数才能使最终的成形制品达到设计要求.提出了一种尾顶力的计算方法,并利用该算法对毛坯进行加载,利用修正的Thamasett算法建立毛坯与旋轮的关系,从而以Ansys为平台建立了一个针对铝制毛坯的筒形件双轮强力旋压仿真模型.利用旋压工艺实验对仿真模型进行验证,其结果与仿真结果一致.该仿真模型可用于指导旋压生产企业的生产,可为企业节约大量的毛坯实验件成本以及旋压工艺实验时间.
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