Automated design system for drawing dies
Expert Systems with Applications: An International Journal
Automatic recognition of features from freeform surface CAD models
Computer-Aided Design
An integrated knowledge based system for sheet metal cutting-punching combination processing
Knowledge-Based Systems
An automated design system for progressive die
Expert Systems with Applications: An International Journal
Automatic strip layout design in progressive dies
Journal of Intelligent Manufacturing
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This paper describes an expert system for die design and process planning of sheet metal forming operations functioning on a part representation by custom-defined features input incrementally. Knowledge acquired from industrial experts pertains mainly to operations sequencing towards a complete process plan and to die and tool configuration, whilst knowledge acquired from handbooks pertains to calculations required to determine basic characteristics of individual manufacturing operations. The expert system is composed of seven modules: initial calculations, cutting-piercing, drawing-stamping, process planning, finishing, die and press selection, and tools selection. Part shape is converted from CAD environment to appropriate constructs in the expert system through a suitable interface to a library of customisable features. The expert system exports manufacturing advice in the form of a report. This can be used mainly by the product designer obtaining feedback on the production feasibility issue, or by the inexperienced die designer. In both cases design and manufacturing efficiency are greatly improved.