孔繁惇

Copyright (c) 1990, Microsoft Corp In the life cycle of product

and process development, process planning is the critical

activity for reaching the goal of low cost, high quality and

less developing time. The computer-aided process planning(CAPP)

is used to facilitate this activity in a concurrent product and

process development environment. The domain knowledge play an

important role in this development cycle to support the process

planning for producing a good process plan, then a good product

could possibly be made. Unfortunately, the domain knowledge is

hard to accumulate and most of it is diversified to the

individual expert. Rework and redesign occur frequently in the

product development cycle due to the lack of manufacturing

knowledge on the part of product designer and mold designer,

causing higher cost, delayed schedule and lower quality.This

thesis presents a systematic approach to develop a knowledge

server for computer-aided concurrent product and process

development especially for the injection molding product.

Knowledge from each level of knowledge is abstracted using a

systematic method. A featured- and knowledge-based computer-

aided mold manufacturing process planning is developed and

supports this knowledge server and based on this CAPP module, a

CAPP advisor is also developed to support the mold''s

manufacturability evaluation during product design and mold

design stage, thus expedites the product development cycle. The

cost reduction, high quality part and shorter developing time

are easily achieved.