An IGES post-processor for interfacing CAD and CAPP of 2 1/2D prismatic parts

An IGES post-processor is presented, written in FORTRAN-77, to extract from an IGES file all information that an automatic process planning program needs, derive new information when necessary and formalise it as PROLOG facts. The processor deals with wire frame models and drawings. Its various modules are described and considerations about its design are discussed, associated with the IGES specification philosophy and pre-processor implementations. Analogous approaches from other processor designs are reviewed.

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