锻压技术

汽车轮毂法兰锻造模具优化分析

英文标题：Optimization analysis on forging mold for automotive hub flanges

作者：李晓贞苏阔李同杰王娟戴书勤

关键词：轮毂法兰锻造模具应变成形速率

分类号：TG316

出版年,卷(期):页码：2022,47(7):220-227

摘要：

为提高汽车轮毂法兰锻造模具的寿命，减少锻造后的加工余量，减少材料浪费，开展轮毂法兰锻造模具优化设计。首先，运用DEFORM-3D软件对轮毂法兰锻造的成形过程进行数值模拟，分析其成形过程中材料的应变状态和整体成形速率；其次，通过模拟成形过程判定锻造容易出现的缺陷位置，完成对锻造模具的优化设计，确定最佳的锻造方案；最后，通过实验验证优化后模具的锻压效果。分析和实验结果表明，优化方案的毛刺数量较少，负载曲线变化平稳，速度较低，凸模最大负载为111000 kN，锻造负载减小了2%；优化模具改善了圆角大小和拔模斜度，增加了底部的锻造盲孔，进一步减少了加工余量，重量较优化前减少了127.8 g；降低了成形过程中锻件的最大等效应力，避免了法兰盘根部的开裂风险。

In order to improve the life of forging mold for automobile hub flange, reduce the machining allowance after forging and material waste, the optimization design of hub flange forging mold was carried out. Firstly, the forming process of hub flange forging was numerically simulated by software DEFORM-3D, and the strain state and overall forming rate of the material in the forming process were analyzed. Secondly, by judging the defect positions that were easy to occur in forging through the simulation of forming process, the optimal design of the forging mold was completed, and the best forging scheme was determined. Finally, the forging effect of the optimized mold was verified by experiments. The analysis and experimental results show that the number of burrs in the optimized scheme is less, the change of load curve is stable, and the speed is low. The maximum load of punch is 111000 kN, and the forging load is reduced by 2%. The optimized mold improves the fillet size and draft angle, increases the forging blind hole at the bottom, further reduces the machining allowance, and reduces the weight by 127.8 g compared with that before optimization. The maximum equivalent stress of forgings in the forming process is reduced, and the risk of cracking at the root of the flange is avoided.

基金项目：

乏燃料溶解器技术第二阶段研究（KY1773）；面齿轮传动啮合特性研究；安徽省自然科学基金面上项目（2108085ME167）；安徽省教育厅自然科学重点项目（KJ2020A0073）；安徽省重点研究与开发计划项目（201904a05020005）；安徽省科技重大专项（201903a02050014）；泰州市双创计划企业创新类资助项目

作者简介：李晓贞（1983-），男，博士，讲师 E-mail：lixzh@ahstu.edu.cn

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