Computational Geometry in C
Genetic Algorithms Plus Data Structures Equals Evolution Programs
Genetic Algorithms Plus Data Structures Equals Evolution Programs
Computer aided process planning for sheet metal bending: a state of the art
Computers in Industry
2001 IEEE International Conference on Acoustics, Speech, and Signal Processing
ICASSP '01 Proceedings of the Acoustics, Speech, and Signal Processing, 200. on IEEE International Conference - Volume 02
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Bending is one of the vital operations to obtain a three-dimensional (3D) shape in a sheet metal component. While planning for its manufacture, it is important to select proper tools, tool stages and sequence for collision-free bending at every stage. Collinear bends can be performed in a single operation. Tools and tool stages can be reused in a sequence depending on length of tool stage, intermediate shape of the component and availability of tools. When a component has many bends and different tools and tool stages are available, number of alternative bend sequences is very large. Evaluation of all such sequences to obtain a collision-free sequence is very tedious. In the present work, bending is carried out virtually for each sequence and an elitist genetic algorithm is used to determine a near optimal bend sequence for which number of tools, tool stages and handling requirements are minimal. The proposed planner for bend sequencing is developed as a part of an integrated manufacturing planning system for sheet metal components.