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Position: Home > Articles > Integration of Multi-point Forming and Reverse Engineering Based on Digitalized Techniques Transactions of the Chinese Society for Agricultural Machinery 2004,35 (4) 128-131

基于数字化技术的多点成形与逆向工程的集成

作者：

严庆光;李明哲;付文智

单位：

吉林大学辊锻工艺研究所

关键词：

多点成形;逆向工程;集成;数字化技术

摘要：

分析了多点成形技术和逆向工程集成时需要解决的关键技术 ,包括表面数字化、曲面重构和控制回弹量的方法。用自行研制的激光测量仪实现工件表面数字化 ,为实例样件的曲面重建和多点成形工件的成形误差检测提供数据源 ;用基于曲率抽样的拓扑矩形阵列进行 NU RBS曲面拟合并用多点成形方法成形工件 ;为了控制工件回弹 ,用两步配准方法计算成形误差并利用闭环成形修整曲面 ,最终实现在没有 CAD模型而只有实物样件情况下的板类件快速精确成形。与此同时开发了实现相关功能的软件。

译名：

Integration of Multi-point Forming and Reverse Engineering Based on Digitalized Techniques

作者：

Yan Qingguang Li Mingzhe Fu Wenzhi (Jilin University)

关键词：

MPF, Reverse engineering, Integration, Digitalized techniques

摘要：

The crucial technologies in integration of multi-point forming(MPF) and reverse engineering, including surface digitization of sheet metal part, surface reconstruction and the method of spring-back controlling, were analyzed. Surface digitization of a sheet metal part was realized through an own developed laser measuring equipment, from which the available data for surface reconstruction of sample part and for forming error inspection of multi-point forming part were provided. Non-uniform rational b-spline (NURBS) surface fitting based on an extracted topology array was made and the method of multi-point forming was used to form parts. In order to control the spring-back of sheet metal part, the forming error was calculated by the method of two-step registration and the surface was modified by closed loop forming. Finally, a rapid precision forming for sheet metal part was fulfilled in the case of no model of CAD and only sample part available. Authors developed a software for the relevant functions.

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基于数字化技术的多点成形与逆向工程的集成

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