Patent ID: 6144896
Filing Date: 2000-11-07
Classification: G05B,G06T,Y02P

Abstract:
An apparatus for resolving a collision between a first bendline and a second bendline of a sheet metal part represented by a 3-D model, the bendlines colliding with one another as a result of a 2-D model of a flat sheet metal part designed on a CAD system being folded into the 3-D model displayed on the CAD system, the apparatus comprising:a detector that detects the collision between the bendlines in the 3-D model;a 3-D polyline computing system that computes 3-D polylines corresponding to a collision area;a 2-D polyline computing system that computes 2-D polylines from the 3-D polylines;a cut-loop system that computes a cut-loop based upon the 2-D polylines; anda refining system that uses the cut-loop to remove a portion of the 2-D model of the flat sheet metal part, creating a modified 2-D model, so that a two radius corner results in a revised 3-D model where the bendlines had intersected when the modified 2-D model is folded into the revised 3-D model.