Generating resource based flexible form manufacturing features through objective driven clustering

Paradigm shift: unified and associative feature-based concurrent and collaborative engineering

“…Therefore, during transformation along engineering processes, engineering intent is not maintained and very often lost in downstream processes. Thirdly, non-geometric Schulte et al 1993;Feng et al 1996;Anderl and Mendgen 1996;Mukherjee and Liu 1997;Whitney et al 1999;Khoshnevis et al 1999;Stage et al 1999;Brunetti and Golob 2000;Park 2003 constraints specified among features are satisfied. For example, different machining sequences may influence the presence, shape, volume, and validity of machining features (Regli and Pratt 1996;Faheem et al 1998;Sharma and Hayes 2001).…”

“…The multiple interpretations and feature interactions are main hurdles that hamper the use of this approach. Some researchers proposed to use engineering intent to solve these two problems (Vandenbrande and Requicha 1993;Gupta and Nau 1995;Gaines and Hayes 1999;Stage et al 1999;Li et al 2002;Raman and Marefat 2004). In other words, instead of pure geometric reasoning, features are recognized within a particular engineering context.…”

“…For process planning, the resource adaptive feature concept was proposed to represent associations between machining volumes and cutting tools, machines, and setups (Gaines and Hayes 1999;Stage et al 1999;Raman and Marefat 2004). These resource adaptive feature definitions are not purely geometric.…”

“…However, they are usually not well formulated and maintained for the reason that they often cannot be fully represented as numerical constraints. Furthermore, it is the engineering intent that actually controls the generation of a product model (Stage et al 1999;Park 2003). The associations between engineering intent and the corresponding features have to be established and managed in order to allow product validation.…”

Change propagation algorithm in a unified feature modeling scheme

“…Stage et al [23] proposed a machining resourcebased, objective driven and hence flexible method for embedding manufacturing knowledge into a machining feature generation process. Chu and Gadh [24], Kumar et al [25], and Subrahmanyam [26] discussed that fixturing features should be generated from the considerations of minimizing set-ups, preventing interferences and providing sufficient clamping forces and moments.…”