皮带轮圆筒形凸台多道次拉深成形工艺研究

摘要

In order to study the multi-stage drawing process of cylindrical boss of pulley, the drawing numbers were calcu-lated by the sheet metal drawing coefficient, and the process of multi-stage drawing was researched by the finite element simu-lation software. Results showed the cylindrical boss could be formed by eight pass drawings. The maximum equivalent stress and the strain distribution were in the position of the corner of the die and outer surface of cylinder wall. With the increase of drawing pass, equivalent stress and strain increased gradually. After eight pass drawings, the accumulated equivalent stress and strain in the material become larger, the formation of cylindrical boss is good, and the size meets the requirements. Pilot produc-tion is successfully carried out according to the results of simulation.%目的：研究皮带轮圆筒形凸台多道次拉深成形工艺过程。方法根据拉深系数计算拉深道次，并采用有限元模拟软件模拟分析多道次拉深成形过程。结果根据计算，需采用八道次拉深成形筒形凸台，成形过程中最大等效应力、应变分布在凸模、凹模圆角位置处及筒壁外表。随着道次增多，坯料内累积的等效应力应变值增大。结论八道次拉深成形后，坯料内累积的应力应变值较大，筒形凸台尺寸符合要求，成形质量较好，根据模拟结果成功进行了生产试制。