Alternative method to determine parting direction automatically for generating core and cavity of two-plate mold using B-rep of visibility map

作者：Yusof Mursyidah Md; Abu Mansor Mohd Salman^*

来源：International Journal of Advanced Manufacturing Technology, 2018, 96(9-12): 3109-3126.

DOI：10.1007/s00170-018-1695-5

• Parting direction
• Two-plate mold
• Visibility map
• B-rep
• Regular freeform models

The existing method to determine the parting direction for core and cavity of two-plate mold is usually limited to decided types of direction. This limitation reduces the capability of the existing method to select the best parting direction for a 3D CAD model of an object. This paper introduces a new algorithm for another alternative that overcomes the limitation and takes less computational time by using the boundary representation (B-rep) of a visibility map to determine the parting direction. By extracting the geometric and topological information of a visibility (V) map, a B-rep entity is created to represent the V-map, which replaces the existing method that uses convex hull algorithms. To illustrate the capability of the algorithm, the 3D CAD model of objects with regular and freeform faces, holes, protrusion, and depression is presented.

• 出版日期2018-6