锻压技术

U形断面弧形件精密级进模排样及模具设计

英文标题：Layout and design of precision progressive die for U-shaped cross-section arcuated stampings

作者：路少磊毕大森于建忠

单位：天津理工大学天津市电工铜质线材企业重点实验室天津市精密级进模具成型技术工程中心天津际华三五二二装具饰品有限公司

分类号：TG386.41

出版年,卷(期):页码：2014,39(9):107-110

摘要：

针对U形断面冲压件在单工序模具生产过程中出现的高成本、低精度和低生产效率等问题，提出了使用多工位级进模代替单工序模的成形方案。分析了U形断面弧形冲压件的冲压工艺性并对产品排样方案进行了设计；通过改进载体连料方式，解决压弧成形时因材料流动引起的料带起皱，保证级进模进料过程顺畅；介绍了级进模结构特征及关键折弯结构、吹料销辅助落料结构的特点。成功开发出U形断面弧形冲压件的多工位级进模，使模具定位精度达到0.02 mm，保证了冲压工艺中的U形断面冲压件的双边精度和整体弧半径精度，生产效率提高了2倍以上。

For the problems appearing in single-step die production of U-shaped cross-section arcuated stampings, like high cost, low precision and low production efficiency, a solution using multi-position progressive die instead of single-step die was proposed. Manufacturability of U-shaped cross-section arcuated stampings was analyzed in details and their layout program was designed accordingly. When the part was formed in arc-shape, strip wrinkling caused by material flow was solved through improving the connection type between carrier and strip to ensure feeding processes smoothly on progressive die. The characteristics of progressive die structure, vital bending part and auxiliary blanking structure of air nozzle were introduced. Multi-position progressive die of U-shaped cross-section arc stampings was successfully developed, which reached an accuracy of 0.02 mm for positioning. The precision of stamping parts on both sides and overall arc radius were realized. The production efficiency has been increased two times higher than that of before.

基金项目：

天津市科技支撑计划重点项目(13ZCZDGX01300)

路少磊（1987-），男，硕士研究生

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