Abstract
This paper is based on a new philosophy of CNC (computer numerical control), which is named as INC (integrated numerical control or intelligent numerical control). First it has a brief introduction of INC and describes important characteristics of INC. Second it introduces and analyses the one of INC's three key technologies: CAD (computer-aided design) technology oriented to CNC, which has mended general design functions to fit CNC and includes some new technologies. It mainly includes image preprocessing technology, image vectorization technology and CAD/CAPP (computer-aided design/computer-aided process planning) integration technology. It discusses the principle and application of them further. Finally, a case is given to illustrate how to realize CAD technology oriented to CNC in engineering area.
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