Increasing the Accuracy of Off‐Line Generated Tool Paths by Compensation of Workpiece Tolerances
暂无分享,去创建一个
Due to its high flexibility and its high accuracy laser machining has become the common process to perform three‐dimensional cutting on deep‐drawn workpieces especially when small lot sizes are to be machined. In the last few years the programming of laser machines has changed from teach‐in to off‐line programming, where the tool path definition is done in a CAM system based on a CAD model of the workpiece. Owing to tolerances in workpiece geometry and positioning, the off‐line programmed tool paths often do not fit exactly the surface of the real workpiece. In this publication, a software system is proposed which adapts the CAD models to their corresponding real workpiece by compensating deviations in shape and location. As a result cutting quality and accuracy are improved.
[1] Ingo Rechenberg,et al. Evolutionsstrategie : Optimierung technischer Systeme nach Prinzipien der biologischen Evolution , 1973 .
[2] Zbigniew Michalewicz,et al. Evolutionary Algorithms in Engineering Applications , 1997, Springer Berlin Heidelberg.
[3] Lothar Bauer. Strategien zur rechnergestützten Offline-Programmierung von 3D-Laseranlagen , 1999 .
[4] D. Sourlier,et al. Three dimensional feature independent bestfit in coordinate metrology , 1995 .