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Dealing with feature interactions for prismatic parts in STEP-NC

Mokhtar, A ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. DOI: 10.1007/s10845-008-0144-y
  3. Publisher: 2009
  4. Abstract:
  5. Determining the precedence of machining features is a critical issue in feature-based process planning. It becomes more complex when geometric interaction occurs between machining features. STEP-NC, the extension of STEP (ISO 10303) standard developed for CNC controllers, is a feature-based data model. It represents all the geometric and topological product data minus feature interactions. In this paper, machining precedence of interactive and non-interactive STEP-NC features is discussed. Local and global precedence of machining features are defined on the basis of geometric constraints, such as geometric interaction of features and feature approach face and technological constraint such as access direction of the cutting tool. A software tool has been developed to visualize the STEP-NC part model and to generate the graphs of feature interaction and feature precedence. The output can be then used to augment the STEP-NC data in order to generate the optimal sequence of operations. © 2008 Springer Science+Business Media, LLC
  6. Keywords:
  7. Feature precedence ; Process planning ; STEP-NC ; CNC controllers ; Critical issues ; Data models ; Feature interaction ; Feature interactions ; Feature-based ; Geometric constraint ; ISO 10303 ; Machining feature ; Non-interactive ; Optimal sequence ; Prismatic parts ; Product data ; Software tool ; Technological constraints ; Computer control systems ; Cutting tools ; Process control ; Process engineering ; Machining
  8. Source: Journal of Intelligent Manufacturing ; Volume 20, Issue 4 , 2009 , Pages 431-445 ; 09565515 (ISSN)
  9. URL: https://link.springer.com/article/10.1007/s10845-008-0144-y