Virtual edge/vertex creation from fillets in geometric models for feature extraction
by F. Zhao, R. Sonthi, R. Gadh
International Journal of Vehicle Design (IJVD), Vol. 21, No. 2/3, 1999

Abstract: One of the critical aspects of CAD/CAM (Computer Aided Design/ Computer Aided Manufacturing) integration is DFM (Design for Manufacturability) analysis of product design, which requires information about the product shape features. However, conventional CAD systems do not explicitly contain shape feature information, making it necessary to extract such information from the product CAD model. Typical feature extraction approaches are based on sharp-edge models and therefore are not appropriate for filleted models. This paper presents an approach, called the Virtual Edge approach, to extract features from filleted geometric models. In the first step, fillet surfaces are determined and categorised based on the nature of the fillets. In the second step, fillet surfaces are represented as virtual sharp edges and vertices. Thus, a filleted model is transformed to a virtual sharp edge model. By doing this, a feature extraction technique based on sharp edge models can be used to determine features from filleted models. The current approach utilizes a C-Loop-based (Cloop is a cycle of concave edges or a cycle of convex edges) feature extraction technique for determining features from the virtual sharp-edge model.

Online publication date: Wed, 20-Oct-2004

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Vehicle Design (IJVD):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com