锻压技术

一种高强度钢U形梁自阻加热冲压工艺装备

英文标题：Self-resistance heating stamping process equipment for a kind of high-strength steel U-shaped beam

作者：孙欢迎刘翊安张晗张晓宇赵军张泉

分类号：

出版年,卷(期):页码：2022,47(3):130-136

摘要：

构建了自阻加热在线冲压试验平台，设计并制造了U形弯曲成形模具，对自阻加热冲压技术进行了工艺验证试验。结果表明：仅需对模具、夹具进行适当创新设计，自阻加热冲压就可以在传统设备上进行，从而显著降低热冲压件的生产成本。为了制造汽车车身上的高强度钢U形梁类零件，设计了一套自阻加热冲压工艺装备：专用弹性夹持装置可以快速夹紧、卸下金属板坯，同时提供弹性拉力，消除细长板坯由于热胀冷缩或自重引起的弯曲，并减小冲压过程对通电回路的冲击；切断弯曲模具两端的冲裁结构与压边顶件的机构配合，可以实现工件的自动顶出，从而提高生产效率。

The online stamping test platform by self-resistance heating was established, and the U-shaped bending forming die was designed and manufactured. Then, the process verification tests for the stamping technology by self-resistance heating were completed. The results show that the stamping by self-resistance heating is conducted on traditional equipment with proper innovative design of die and fixture, and the production cost of hot stamping parts is significantly reduced. In order to manufacture high-strength steel U-shaped beam parts on the automobile body, a set of stamping process equipment by self-resistance heating is designed, which can quickly clamp and unload the sheet metal by the special elastic clamping device, provide elastic tension at the same time, eliminate the bending of slender sheet metal caused by thermal expansion and cold contraction or its own weight, reduce the impact of the stamping process on the electrified circuit, cut off the mechanism cooperation between the punching structure at both ends of bending die and the blank holder ejector, realize to eject the workpiece automatically. Thus, the production efficiency can be improved.

基金项目：

北华航天工业学院科研基金重点项目（ZD-2020-02）；河北省高等学校科学技术研究重点项目（ZD2018239）

孙欢迎（1980-），男，博士，副教授 E-mail：huanying417@163.com

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