摘要
基于Simufact.Forming冷锻成形模块,对圆插针截面圆的成形性进行了数值模拟。在截面面积不变的条件下研究了不同宽高比的毛坯成形的等效塑性应变分布图,得到了最优的毛坯宽高比,为圆插针冲压的毛坯设计提供了参考。分析了锻圆各工艺参数对圆插针成形的影响,设计了以锻圆头端间隙、预锻C角、冲压速度和摩擦系数为试验参数的4因素3水平正交试验,以成形后的小平面总宽度为优化目标,通过极差分析得到了4个因素对圆插针小平面总宽度的影响趋势。结合生产实际得出的优化方案为:锻圆头端间隙为0.09 mm、冲压速度为80冲次·min^-1、减小预锻C角、适当降低润滑条件,为圆插针生产过程中的小平面宽度尺寸优化提供了参考。
Based on cold forging module of Simufact.Forming,the formability of cross-section circle for round pin was simulated.Under the condition of constant cross-sectional area,the diagrams of equivalent plastic strain distribution for blank forming with different ratios of width to height were studied,and the optimal ratio of width to height for blank was obtained to provide a reference for blank design of round pin stamping.Then,the influences of forging process parameters on the forming of round pin were analyzed,and a four-factor and three-level orthogonal experiment with forging round head end clearance,pre-forged C angle,stamping speed and friction coefficient as the experiment parameters was designed.Furthermore,taking the total width of small plane after forming as the optimization objective,the influence trend of four factors on the total width of small plane for round pin was obtained by range analysis.According to the actual production,the optimized scheme is as follows:the forging round head end clearance is 0.09 mm,the stamping speed is 80 strokes per minute,the pre-forged C angle is reduced,and the lubrication conditions are appropriately reduced to provide a reference for the optimization on the width of small plane for round pin in the production process.
作者
冯学林
万里翔
Feng Xuelin;Wan Lixiang(School of Mechanical Engineering,Southwest Jiaotong University,Chengdu 610031,China)
出处
《锻压技术》
CAS
CSCD
北大核心
2020年第11期1-6,共6页
Forging & Stamping Technology
