Method for blending edges of a geometric object in a computer-aided design system

摘要

In a method for blending an edge E of a geometric object 15 in a computer-aided design (CAD) system, a user can select an edge E which is to be blended as well as the size of the blend portion 19. The size of the blend portion 19 can be selected, for example, by entering a desired blend radius into the CAD system. The CAD system calculates the blended object 16 comprising the blend portion 19 and the remaining parts of the original object 15. The the intersections (for example LB and RB) of the blend surface with the object 15 are calculated and it is determined which edges and faces of the original object 15 are deleted by the blending operation. The method is capable of performing blending operations wherein an arbitrary number of edges and faces, for example face 18, are removed from the object. The method can also be used for blending an edge E with a variable radius and for chamfering the edge.