Research on Springback Compensation Technology of U-shaped Parts Based on Equal Arc Length

China Mechanical Engineering ›› 2014, Vol. 25 ›› Issue (4): 550-554.

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Research on Springback Compensation Technology of U-shaped Parts Based on Equal Arc Length

Gong Zhihui1,2;Wang Richao1;Yang Jitao1;Zhou Shunfeng1

1.State Key Laboratory of Advanced Design and Manufacture for Vehicle Body，Hunan University，Changsha，410082
2.Key Laboratory of Manufacture and Test Techniques for Automobile Parts，Ministry of Education，Chongqing University of Technology，Chongqing，400054

Online:2014-02-25 Published:2014-03-05
Supported by:
Supported by China Postdoctoral Science Foundation（No. 2012M511748）

基于等弧长的U形件回弹补偿技术研究

龚志辉1,2;汪日超1;杨继涛1;周顺峰1

1.湖南大学汽车车身先进设计制造国家重点实验室，长沙，410082
2.重庆理工大学汽车零部件制造及检测技术教育部重点实验室，重庆，400054

基金资助:
中国博士后科学基金资助项目（2012M511748）；华中科技大学材料成形与模具技术国家重点实验室开放基金资助项目（2011-P10）；重庆理工大学汽车零部件制造及检测技术教育部重点实验室开放基金资助项目（2011KLMT06）；湖南大学青年教师成长计划资助项目（2010-25）

Abstract

Abstract:

Arc springback compensation of bottom surface was an effective method to eliminate stamping negative angle，which was from springback compensation of U-shaped parts. The radius of bottom arc and corner arcs, arc center coordinate values of the corner can be acquired based on equal arc length compensation rule, Consequently, the dimensional accuracy of U-shaped part's springback compensation was improved. The approximate model for the calculation of U-shaped part's springback angle was constructed based on experimental design and response surface methods(RSM), and furthermore, springback compensation angle and the maximum compensation angle of the U-shaped parts were worked out by theoretical analysis, the model of arc compensation of bottom surface for U-shaped part's springback compensation can be constructed rapidly, and the example herein shows its feasibility.

Key words: springback, equal arc length, die compensation, stamping negative angle

摘要：

底面圆弧回弹补偿是解决U形件回弹补偿过程中所产生冲压负角的有效方法，故提出等弧长补偿原则来快速获得底面圆弧半径、两侧底角圆弧半径及圆弧中心参数，实现了U形件回弹补偿模型尺寸精度的精确控制;应用试验设计方法、响应面模型构建了U形件回弹角计算的近似模型，通过理论分析实现了补偿角和最大补偿角的计算，从而可快速构建底面圆弧补偿的U形件回弹补偿模型。算例验证了该方法的有效性。

关键词: 回弹, 等弧长, 模具补偿, 冲压负角

CLC Number:

TG386.3

Gong Zhihui, Wang Richao, Yang Jitao, Zhou Shunfeng. Research on Springback Compensation Technology of U-shaped Parts Based on Equal Arc Length[J]. China Mechanical Engineering, 2014, 25(4): 550-554.

龚志辉, 汪日超, 杨继涛, 周顺峰. 基于等弧长的U形件回弹补偿技术研究[J]. 中国机械工程, 2014, 25(4): 550-554.

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Research on Springback Compensation Technology of U-shaped Parts Based on Equal Arc Length

基于等弧长的U形件回弹补偿技术研究

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