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Title:INTELIGENTNI RAČUNALNIŠKI SISTEM ZA PODPORO POSTOPKU KONSTRUIRANJA ORODIJ ZA HLADNO PREOBLIKOVANJE PLOČEVIN
Authors:Potočnik, David (Author)
Ulbin, Miran (Mentor) More about this mentor... New window
Dolšak, Bojan (Co-mentor)
Files:.pdf DR_Potocnik_David_2013.pdf (9,63 MB)
 
Language:Slovenian
Work type:Dissertation (m)
Typology:2.08 - Doctoral Dissertation
Organization:FS - Faculty of Mechanical Engineering
Abstract:Konstruiranje orodij za hladno preoblikovanje pločevin je kompleksen postopek, ki je domena bogatih izkušenj in znanja, na osnovi katerih lahko konstrukterji sprejemajo raznovrstne odločitve. Pomanjkanje izkušenih ter neučinkovito in počasno delovanje neizkušenih konstrukterjev so razlogi, da je ravno ta postopek ozko grlo celotnega razvojnega cikla pločevinskih izdelkov. Možen pristop k reševanju omenjene problematike se kaže v nadgradnji konvencionalnih CAD-sistemov z znanjem strokovnjakov. Navkljub mnogim poskusom razvoja tovrstnih inteligentnih sistemov za podporo postopku konstruiranja orodij za hladno preoblikovanje pločevin, pa je bilo zelo malo izmed njih usmerjenih v nadgradnjo omejenih zmogljivosti parametričnih 3D CAD-sistemov. To dejstvo je še posebej problematično, saj danes njihova uporaba predstavlja standard na področju konstruiranja orodij za hladno preoblikovanje pločevin. Pričujoče delo predstavlja novo metodologijo za vzpostavitev inteligentnega parametričnega 3D CAD-sistema, namenjenega celoviti podpori postopku konstruiranja orodij za hladno preoblikovanje pločevin. V ta namen je bila opravljena analiza tradicionalnega postopka konstruiranja orodij za hladno preoblikovanje pločevin ter sistematizirano kompleksno konstruktersko znanje, ki se navezuje na celoten razvojni cikel pločevinskega izdelka. Za razvoj sistema smo izbrali napredni 3D CAD-paket CATIA V5 R19, vključno z njegovim KBE-modulom Knowledgeware, ki ponuja bogat nabor funkcij za integracijo konstrukterskega znanja. Predlagan modulno zasnovan sistem je edinstven v smislu vzporednega povezovanja informacij, znanj in aktivnosti vseh razvojnih faz pločevinskega izdelka. Moduli omogočajo reševanje parametričnih omejitev, z dobljenimi rezultati pa lahko sistem avtomatsko izvrši konstruiranje preoblikovalnega orodja za veliko območje konstrukterskih problemov. Sistem prav tako omogoča svetovanje, preprečevanje napak ter izobraževanje neizkušenih konstrukterjev. Delovanje sistema so testirali tako izkušeni kot tudi neizkušeni konstrukterji znotraj podjetja Emo-orodjarna d. o. o. Na podlagi analize rezultatov lahko zaključimo, da sistem daje zelo kakovostne rezultate, bistveno prispeva k skrajšanju časa konstruiranja ter predstavlja učinkovit način za izobraževanje neizkušenih konstrukterjev.
Keywords:konstruiranje orodij za hladno preoblikovanje pločevin, konstruiranje za izdelavo, parametrično modeliranje, konstruiranje z značilnostmi, avtomatizirano konstruiranje, sklepanje na osnovi omejitev, sočasno inženirstvo
Year of publishing:2013
Publisher:D. Potočnik]
Source:[Maribor
UDC:621.7.004-11(043.3)
COBISS_ID:17416470 Link is opened in a new window
NUK URN:URN:SI:UM:DK:P9ZFFLC5
Views:1289
Downloads:221
Metadata:XML RDF-CHPDL DC-XML DC-RDF
Categories:KTFMB - FS
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Secondary language

Language:English
Title:AN INTELLIGENT COMPUTER SYSTEM FOR SUPPORTING THE DESIGNING OF STAMPING DIES FOR THE COLD FORMING OF SHEET METAL
Abstract: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. The 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 CATIA V5 R19 advanced 3D CAD-package, including its KBE-module ‘Knowledgeware’ 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.
Keywords:stamping die design, design for manufacture, parametric modelling, feature-based design, design automation, constrained-based reasoning, concurrent engineering


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