A Polyhedral-based Approach of Accessibility Computation for a NURBS Model in Tool-based Manufacturing

Abstract

Computing accessibility information from a NURBS model is an interesting aspect in design and manufacturing planning. We propose an approach how to compute the accessibility information from a NURBS model, called a polyhedral-based approach. In this paper, not only global point accessibility (usually used in the applications of CMM measuring and machining) but also global patch accessibility (i.e. a new term for mold design) is alternatively determined. At the high resolution, this approach runs faster than the approach for computing the facet accessibility.