• CN:11-2187/TH
  • ISSN:0577-6686

›› 2008, Vol. 44 ›› Issue (1): 150-154.

• 论文 • 上一篇    下一篇

多点成形过程中基本体群调形技术

裴永生;彭加耕;李明哲   

  1. 燕山大学车辆与能源学院;吉林大学辊锻工艺研究所
  • 发布日期:2008-01-15

Height Adjusting of Fundamental Elements in Process of Multi-point Forming

PEI Yongsheng;PENG Jiageng; LI Mingzhe   

  1. College of Vehicle and Energy, Yanshan University Roll Forging Institute, Jilin University
  • Published:2008-01-15

摘要: 介绍多点成形压力机中基本体群的调形技术与多点成形过程。以Passat1.8T轿车顶盖为例,运用逆向工程技术重构出轿车顶盖的三维曲面数学模型,在此基础上利用多点成形CAD软件系统计算出各基本体与轿车顶盖的三维曲面相互接触的高度数据,形成基本体群的高度数据文件,再将此数据文件传送给多点成形CAM软件系统,从而通过对各基本体的控制,调整一系列规则排列的基本体的高度,形成轿车顶盖的三维曲面的包络面。对轿车顶盖进行多点成形的试验研究为多点成形技术在汽车覆盖件冲压成形过程中的应用奠定了基础。

关键词: CAD/CAM软件系统, 多点成形, 轿车顶盖, 逆向工程

Abstract: The technique of the height adjusting of the fundamental elements and the process of multi-point forming(MPF) are introduced. With the Passat 1.8T roof as an example, the 3D surface is reconstructed by applying the technique of reverse engineering, and the height of the fundamental element contacting with 3D surface of passat 1.8T roof each other is caluclated by applying CAD software of MPF on the basis of car roof 3D surface. Thereby the height data file of the fundamental elements are gained. And the height data file to CAM software of MPF are transmitted., finally through controlling the funda- mental elements, the height of a serial of discrete fundamental elements arranged regularly is adjusted, the envelope of the car roof 3D surface is formed. Consequently, the certain base for applications of the technique of MPF in automobile outer panels pressing forming process is established by studying the experi-ment of the car roof MPF.

Key words: CAD/CAM software system, Car roof, Multi-point forming, Reverse engineering

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