Iterative, simulation-based shape modification by free-form deformation of the NC programs

Authors: A. Sacharow, S. Odendahl, A. Peuker, D. Biermann, T. Surmann, A. Zabel

Abstract: 
In production engineering, there are several applications where the geometry of a designed workpiece has to be modified, e.g., optimization of forming tools during springback compensation in sheet metal forming. In general, the modified shape of the workpiece is given as a mesh and has to be converted to a parametric representation by surface reconstruction before manufacturing. In this paper, a new approach for obtaining small shape modifications by direct deformation of the NC programs is presented. In an iterative process, the CAM data is modified by a free-form deformation and is verified by a milling simulation so that the modified workpiece can be manufactured directly on the basis of the original CAD/ CAM data without surface reconstruction.

Keywords:
CAD/CAM
Shape modification
Free-form deformation
Milling
Simulation
Springback

Published in: Advances Engineering Software (Volume 56, February  2013)

Publisher: Elsevier

ISSN Information: 0965-9978

Iterative, simulation-based shape modification by free-form deformation of the NC programs

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