锻压技术

基于正交试验的转向节锻模阻力墙结构参数优化

英文标题：Optimization of resistance wall structure parameter in knuckle forging die based on orthogonal test

作者：何文涛刘淑梅赵毅张明浩

单位：上海工程技术大学

分类号：TG316

出版年,卷(期):页码：2015,40(12):16-20

摘要：

IMV转向节属于“孔-盘-叉-臂”结构，共有5个长度不一的分叉和1个长臂，在实际生产中长叉末端易出现塌角，且材料利用率较低，针对该问题进行了IMV转向节的阻力墙模具结构优化设计。建立了正交试验方案，并以降低成形载荷、模具磨损和提高填充能力为目标，得到了较优的阻力墙结构参数，即两墙面拐角圆角r为25 mm，阻力墙高度h为20 mm，阻力墙斜度a为10°，阻力墙间隙n为3 mm。把阻力墙引入复杂转向节预锻成形中，并对4个主要参数进行优化。采用优化正交试验方案r3h1a2n2进行生产试验验证，试验结果表明，原材料直径由Ф100 mm降为Ф95 mm，使材料利用率提高了3.2%。

IMV knuckle has the structure of “hole-plate-fork-arm”, including five branches of different lengths and a long arm. In the actual production, long forks prone to collapse angle at the end, and the material utilization rate is low. For the above problems, the resistance wall structure was designed optimally. In order to reduce the forming load, die wear and to improve the filling capability, the orthogonal experiment was established. Then the optimum structural parameters of resistance wall was ultimately determined, namely, the two metope corner fillet of 25 mm, the resistance wall height of 20mm, the resistance wall slope of 15° and the resistance wall clearance of 3 mm. The resistance wall was pulled into the complex knuckle pre-forging, and four main parameters were optimized. After the optimized orthogonal experiment, the results show that the diameter of the raw materials deduces from Φ100 mm to Φ95 mm, and the material utilization ratio is increased by 3.2%.

基金项目：

上海市内涵科研建设项目(nhky-2013-05);上海工程技术大学研究生科研创新项目（14KY0514）；上海工程技术大学大学生创新训练项目（cx1505001）

作者简介：何文涛（1990-），男，硕士研究生

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