锻压技术

基于AutoForm的汽车顶盖拉延工艺分析及模具设计

英文标题：Drawing process analysis and die design of automobile roof cover based on AutoForm

作者：左治江张宇辉丁元才

单位：江汉大学

分类号：TG385.2

出版年,卷(期):页码：2019,44(3):101-106

摘要：

以某品牌汽车顶盖冲压件为实例，对汽车顶盖进行工艺分析，采用AutoForm软件模拟了汽车顶盖的成形过程，得出了成形极限图以及失效形式，确定了坯料轧制角度和压边力等一些基本的拉延工艺参数，降低了冲压生产中零件出现开裂和起皱缺陷的风险。采用三维绘制软件UG和二维绘图软件CAD绘制了拉延模装配图并检查模具各部件之间的干涉状态，确保各个零部件之间恰当配合，达到了减少模具制作成本、缩短模具制造周期的目的。验证了有限元模拟技术可完善并优化模具设计技术，并根据模拟和设计的结果，制备了拉延模，成功地生产出满足图纸要求的汽车顶盖。

For a brand automobile roof cover, its forming process was analyzed, and its forming process was simulated by software AutoForm. Then, the forming limit diagram and failure form were obtained, and some basic drawing process parameters such as rolling angle and blank holder force of billet were determined to reduce the risk of cracking and wrinkling defects in parts during stamping production. Furthermore, the assembly drawing of drawing die was drawn by 3D drawing software UG and 2D drawing software CAD, and the interference states between the parts of the die were checked to ensure proper coordination among the parts. The purpose of reducing the cost of die making and shortening the cycle of die manufacturing was achieved. Finally, the die design technology could be perfected and optimized by finite element simulation technology. Based on the simulation and design results, the drawing die was prepared, and the automobile roof cover meeting the requirements of drawings was successfully produced.

基金项目：

武汉市教育局产学研项目（CXY201602）

左治江（1974-），男，博士，教授，E-mail：zzjdfcy@163.com

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