• CN:11-2187/TH
  • ISSN:0577-6686

›› 2001, Vol. 37 ›› Issue (8): 99-101,.

• 论文 • 上一篇    下一篇

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板材冲压成形中的弯曲与反弯曲变形问题的研究

秦泗吉;王志松   

  1. 燕山大学锻压研究所
  • 发布日期:2001-08-15

RESEARCH ON BENDING AND REVERSE BENDING IN SHEET METAL FORMING PROCESS

Qin Siji;Wang Zhisong   

  1. Yanshan University
  • Published:2001-08-15

摘要: 基于多角弯曲成形时的弯曲和反弯曲变形模型,对弯曲、拉深、胀形及翻边等基本冲压成形方式进行了研究,分析了各种成形方式中的弯曲、反弯曲现象,导出了产生反弯曲变形的判定条件,提出了当量弯曲角的概念,给出了正确计算成形力的方法。研究结果表明,对许多冲压成形,在变形的初始阶段并不存在反弯曲变形。

关键词: 板材成形, 拉深, 弯曲和反弯曲, 胀形与翻边

Abstract: Based on the model of bending and reverse bending for bland sheet bending with multi-angular deformation, the basic sheet deformations including bending, deep drawing, bulging and flanging are studied, The phenomena of bending and reverse bending in these deformations are analyzed. The decision condition is given as the reverse bending deformation occurs, Also, the conception of corresponding bending angle is presented and the proper methods to calculate the deformed force and energy are given. It is pointed out that the reverse bending deformations are not occur in initial stages of many forming processes.

Key words: Bending and reverse bending, Bulging and flanging, Deep drawing, Sheet metal forming

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