Abstract
A CAD/CMM workpiece modeling system based on IGES file is proposed. The modeling system is implemented by using a method of labelling the tolerance items of 3D workpiece. The concept-feature face is used in the method. Firstly the CAD data of workpiece are extracted and recognized automatically. Then a workpiece model is generated, which is the integration of pure 3D geometry form with its corresponding inspection items. The principle of workpiece modeling is also presented. At last, the experiment results are shown and correctness of the model is certified.
Highlights
A CAD/coordinate measuring machine (CMM) workpiece modeling system based on IGES file is proposed
Modern factory automation —flexible automation pushes the development of inspection technology to the direction of high efficiency and intelligence
CAD and CMM belong to two different application areas, and each needs different data module structure of its own
Summary
The module structure of CAD parts deals with the transmission of information between CAD and CMM. It contains the extraction, exchange and share of the CAD information of parts. That transmission and exchange of data between CAD and CMM should be kept unobstructed. CAD and CMM belong to two different application areas, and each needs different data module structure of its own. There are some difficulties in the direct communication between them. A kind of method is needed to solve the problem mentioned above so that the information stream could be formed and the product could be dealt automatically by computer, and the information transmission could be realized
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