Modular Architecture of CAPP System
Given figure shows the modular architecture of CAPP system for stamping dies. It has various modules to carry out functions listed below :
- CAD Modeling of parts
- Flat Pattern development
- Nesting of Flat Patterns (Blanks)
- Die Design
- CNC Programming
- Output
Die Drawings, BOM, CNC part program
Materials, Machines, Process capabilities
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Figure: Modular Architecture of CAPP System
Reported CAPP systems have implemented these functional modules to varying degrees to cater different part/process domains, shop practices and outputs desired. Most of the CAPP systems have decision rules based on Heuristics and are in essence, Generative CAPP systems [3-6]. Rule based Expert Systems have also been attempted for specific tasks such as Press Selection, Operation/Process Parameter Selection, Parts/Die selection, etc.
In what follows, features provided by the above modules in CAPP systems are presented in general.