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|Titolo:||Network part program approach based on the STEP-NC data structure for the machining of multiple fixture pallets|
|Autori interni:||BORGIA, STEFANO|
TOLIO, TULLIO ANTONIO MARIA
|Data di pubblicazione:||2014|
|Rivista:||INTERNATIONAL JOURNAL OF COMPUTER INTEGRATED MANUFACTURING|
|Abstract:||The adoption of alternative process plans, that is, process plans that include alternative ways of machining a workpiece, can improve system performance through a better management of resource availability. Unfortunately even if this opportunity is deeply analysed in literature, it is not frequently adopted in real manufacturing practice. In order to fill this gap, this article presents the network part program (NPP) approach for the machining of multiple fixture pallets. The NPP approach is based on the STEP-NC data structure which supports nonlinear sequences of operations and process flexibility. In the NPP approach, a machining system supervisor defines the machining sequences and generates the related part programs just before the execution of the pallet. This article provides an approach with high scientific value and industrial applicability based on the integration of new and existing process planning methods. A real industrial case study is considered in order to show that in real applications the final quality is unaffected by the change of the sequence of the operations due to the employment of nonlinear process plans. Since the results appear very encouraging, the proposed approach is a possible solution to accelerate the adoption of nonlinear process planning in real manufacturing practice.|
|Appare nelle tipologie:||01.1 Articolo in Rivista|
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