Inteligentni računalniški sistem za podporo postopku konstruiranja orodij za hladno preoblikovanje pločevin : doktorska disertacija

slovenian

doktorska dela

2013

Univerza v Mariboru, Fakulteta za strojništvo

Designing stamping dies for the cold forming of sheet metal is a complex process that is a domain of rich experience and knowledge, on the basis of which the designers make different decisions. A lack of experience resulting in inefficient and slow performances by some inexperienced designers is the reason for the present bottleneck within the whole development cycle of sheet metal products. A possible approach for resolving this issue is an upgrading of conventional CAD-systems by utilising the knowledge of experts. Despite numerous attempts for developing such intelligent systems for supporting design of stamping dies for the cold forming of sheet metal, very few of them were aimed at upgrading the limited capabilities of the parametric 3D CAD-systems. This fact is particularly problematic because today their usage represents the standard in the field of designing stamping dies for the cold forming of sheet metal. he presented work describes a new methodology for establishing an intelligent parametric 3D CAD-system intended for supporting the overall process of designing stamping dies for the cold forming of sheet metal. For this purpose an analysis of the traditional designing of stamping dies for the cold forming of sheet metal was conducted and complex design knowledge, referring to the entire development cycle of a sheet metal product was systematised. In order to develop the presented system, we chose the CATIAV5 R19 advanced 3D CAD-package, including its KBE-module ŽKnowledgeware' that offers a rich set of functions for integrating design knowledge. The proposed modular system is unique in the sense of its parallel integration of information, knowledge, and activities throughout all the development phases of a sheet metal product. In addition to the fact that its modules enable the resolving of parametric constraints, from the results of which the system can automatically execute the designing of stamping dies for the cold forming of sheet metal by covering greater areas of design problems, the system also provides consultancy, the preventing of errors, and the training of inexperienced designers. The operation of this system was tested by both experienced and inexperienced designers within the Emo-orodjarna d.o.o. Company. Based on the analysed results we can conclude that the system provides high-quality results, significantly contributes to reducing the designing time, and represents an effective way of training inexperienced designers.

08.08.2023