An improved approach for automatic process plan generation of complex borings

Abstract

The research concerns automated generation of process plans using knowledge formalization and capitalization. Tools allowing designers to deal with issues and specifications of the machining domain are taken into account. The main objective of the current work is to prevent designers from designing solutions that would be expensive and difficult to machine. Among all available solutions to achieve this goal, two are distinguished: the generative approach and the analogy approach. The generative approach is more adapted to generate the machining plans of parts composed of numerous boring operations in interaction. However, generative systems have two major problems: proposed solutions are often too numerous and are only geometrically but not technologically relevant. In order to overcome these drawbacks, two new concepts of feature and three control algorithms are developed. The paper presents the two new features: the Machining Enabled Geometrical Feature (MEGF) and the Machinable Features (MbF). This development is the result of the separation of the geometrical and the technological data contained in one machining feature. The second objective of the paper is to improve the current Process Ascending Generation (PAG) system with control algorithms in order to limit the combinatorial explosion and disable the generation of unusable or not machinable solutions. #

Tersine Mühendislik Yaklaşımına Dayalı Yeni Bir İmalat İçin Tasarım İşlem Modeli

“…Geleneksel işlem planlama sürecindeki iş yükünü azaltmayı ve işlem tasarım sürelerini kısaltmayı amaçlayan 150'den fazla BDİP sistemi geliştirilmiştir [23]. Geliştirilen bazı BDİP sistemlerinde karar verme mekanizması uzman sistem veya yapay sinir ağları aracılığıyla yönetilmiştir [24]- [32]. BDİP sistemini çalıştırmak için imal edilecek parçaların BDT sisteminde oluşturulmuş unsur tabanlı modellerinin olması gerekmektedir.…”

Information modeling for variation management during the product and manufacturing process design

“…These data describe the product and the reasoning behind certain design decisions. The outputs from process planning, including manufacturing processes, equipment, and cost, are the manufacturability data [36][37][38]. These data are also captured and sent back to the design tools and designers.…”

“…During the determination of the manufacturing processes and the selection of manufacturing resources, manufacturers take into account the interactions between part and manufacturing resources (Fig. 10) [37].…”

Reconfigurable machining process planning for part variety in new manufacturing paradigms: Definitions, models and framework

“…Feature-based model is a widely-accepted part representation model because of its modular, object-oriented and geometry-free characteristics. In the literature, most of the feature-based models are developed to represent the design information of one single part (Amaitik & Kilic, 2005;Etienne, Dantan, Siadat, & Martin, 2006).…”