锻压技术

某汽车底梁加固件多工位级进模设计

英文标题：Design on multi-position progressive die for stiffener of automotive beam

作者：王二冬徐晓夏琴香姚小春龙礼仁

分类号：TG385.2

出版年,卷(期):页码：2015,40(12):87-91

摘要：

为了提高汽车安全性及减轻车身重量，高强钢板结构件在汽车制造上的应用越来越广泛。某汽车底梁加固件的材料为高强钢GMW3032M-ST-S-CR340LA，其结构复杂、精度要求较高。针对该零件的结构特征进行了冲压成形工艺分析，确定了采用中间载体、双排排样的12工位级进模冲压工艺方案，并对级进模的总体结构和关键结构进行了设计。部分冲裁凸模采用单峰斜刃结构，能有效降低冲裁力；采用压弯拉深复合成形模具结构，可以减小级进模的工位数；设计了吊装式斜楔机构，能够简化加工工序、方便工件的取放。试冲结果表明，使用该套模具生产的制件满足尺寸精度要求，生产效率高。

The structural parts made by high strength steel are applied more and more extensively in the automotive to improve the security and reduce the weight. The material of the stiffener of automotive beam is GMW3032M-ST-S-CR340LA, which is complex and of high precision requirement. The stamping process of the automotive part was analyzed based on its structure characteristics, and the 12-position progressive stamping processes with double-row and intermediate carrier were determined. Further, the total structure and the key processing structure of the die were designed. Some blanking punches were of a single peak and inclined blade structure to effectively reduce the blanking force. The bending-drawing composite structure reduced the positions of the multi-position progressive die. The inverted wedge mechanism was designed to simplify the manufacturing processes and to pick and put workpiece conveniently. The trial test shows that the size dimension of the parts produced by this die can meet the technology requirement，and the produce efficiency is high.

基金项目：

广东省高等学校高层次人才项目(x2jqN9101140)；顺德区产学研合作项目（2014CXY18）

作者简介：王二冬（1987-），男，硕士研究生通讯作者: 夏琴香(1964-),女，博士，教授

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