Influence of part geometrical tolerancing in the REFM methodology
Proceedings of Joint Conference on Mechanical, Design Engineering & Advanced Manufacturing
This paper deals with the remanufacturing of existing part in a context of Reverse Engineering (RE). The proposed methodology called Reverse Engineering for Manufacturing (REFM) consists in generating a Computer Aided Process Planning (CAPP) of a part from 3D information, point cloud, and user knowledge. The idea of this methodology is to avoid the passage by the CAD model. Steps of this methodology are based on a Surface Precedence Graph (SPG) build on a suggested geometrical tolerancing of the part. This graph leads to machining operation precedence graph (MOPG) that leads to the CAPP model. A problem of this approach is that different tolerancing of the same part lead to different process planning. To solve this problem, rules are presented to facilitate the user work. This paper presents the REFM methodology illustrated on a study case.