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Model based machining descriptions
KTH, School of Industrial Engineering and Management (ITM), Production Engineering, Computer Systems for Design and Manufacturing.ORCID iD: 0000-0002-8243-9505
KTH, School of Industrial Engineering and Management (ITM), Production Engineering, Computer Systems for Design and Manufacturing.ORCID iD: 0000-0002-0023-0282
KTH, School of Industrial Engineering and Management (ITM), Production Engineering.ORCID iD: 0000-0001-6403-2878
KTH, School of Industrial Engineering and Management (ITM), Production Engineering, Computer Systems for Design and Manufacturing.
2010 (English)In: CIRP ICME ’10 - 7th CIRP International Conference on INTELLIGENT  COMPUTATION  IN MANUFACTURING  ENGINEERING: Innovative and Cognitive Production Technology and Systems / [ed] R. Teti, University of Naples, Italy, Capri, Italy, 2010Conference paper, Published paper (Refereed)
Abstract [en]

Today’s CAD/CAM systems make it possible to manage features, dimensions and tolerances from design through process and operations planning in their internal proprietary data model. For manufacturing purposes information is then split into different documents for setup and machining operation besides NC code. A demonstrator has been developed based on a case study and the ISO 10303 standard as a coherent data model for representing relationships between manufacturing features, machined faces, tolerances and used cutting tools. When the information model is fully exploited, the fragmentation of data as well as manufacturing preparation time and administration cost are significantly reduced.

Place, publisher, year, edition, pages
Capri, Italy, 2010.
Keywords [en]
CAM, CNC, Machining description
National Category
Production Engineering, Human Work Science and Ergonomics
Research subject
SRA - Production
Identifiers
URN: urn:nbn:se:kth:diva-26019ISBN: 978-88-95028-65-1 (print)OAI: oai:DiVA.org:kth-26019DiVA, id: diva2:367542
Conference
CIRP ICME ’10 - 7th CIRP International Conference on INTELLIGENT COMPUTATION IN MANUFACTURING ENGINEERING
Funder
XPRES - Initiative for excellence in production research
Note
QC 20110112Available from: 2010-11-09 Created: 2010-11-09 Last updated: 2013-05-14Bibliographically approved
In thesis
1. Model driven process planning for machining: Theory, application and improved information standards for efficient product realization
Open this publication in new window or tab >>Model driven process planning for machining: Theory, application and improved information standards for efficient product realization
2013 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Model driven process planning is a methodology that emphasizes the application of models to create, represent and use information of products, processes and resources. Industry today stores information in a fragmented manner, mainly document centered with the consequence of data duplication requiring comprehensive data management and maintenance. This thesis contributes to the understanding of information representation of product and machining system specification and characteristics to support process planning and operation.

The ISO 10303 standard for industrial data has been applied as a key utility in this research, as it enables full control and understanding of information representation in diverse engineering domains. Research collaboration with participants of the International Organization for Standardization ISO has taken place, with contributions to standards development and implementation.

The basics of process planning are to achieve the unambiguous and complete information required for producing a product. The machining process plan, as a coherent model, represents relationships between manufacturing features, machined faces, tolerances and used cutting tools. It is essential for the representation of information to relate data to its valid interpretation context. Of importance is also that models and model schemas are decoupled from where, how and when the models are created, manipulated and finalized. Based on this principle, achieved coherent process plans supports efficient production engineering work processes.

Unambiguous and efficient modeling of manufacturing resources and their characteristics requires definitions of its specific domain concepts combined with generic data representation structures. This combination provides a stable and standardized data model, also capable of representing manufacturing resources developed in the future. The proposed modeling approach for manufacturing resource characterisation is valid for any product mechanism.

For implementation of the proposed increased integration, a modeling specification will be required. With the application of model driven process planning, new industrial benefits have been explored. The main principle of relating data to its valid context, applied to model driven process planning for machining, gives new possibilities for increased productivity.

Abstract [sv]

Modelldriven beredning är en metodik som framhäver användningen av modeller för att skapa, representera och använda information om produkter, processer och resurser. I industrin lagras idag information på ett fragmenterat sätt, huvudsakligen dokumentbaserat, med konsekvensen att data dupliceras vilket kräver omfattande datahantering och underhåll. Denna avhandling bidrar till förståelsen av informationsrepresentation för att specificera och karakterisera produkter och bearbetningssystem, som stöd i beredning och drift.

Standarden ISO 10303 för industriella data har använts som en viktig del i denna forskning då den möjliggör full kontroll och förståelse av informationsrepresentation inom olika ingenjörsområden. Forskningssamarbete med deltagare inom Internationella standardiseringsorganisationen ISO har ägt rum och bidragit till standardutveckling och implementering.

Målet för en beredning är att ta fram entydig och komplett information som behövs för att producera en produkt. Resultatet, bearbetningsberedningen, representerar relationerna mellan tillverkningsformelement, bearbetade ytor, toleranser och använt skärverktyg, som en koherent modell. Grundläggande för denna representation är att informationen relateras till sitt giltiga sammanhang för dess tolkning. Viktigt är också att modeller och modellscheman är frikopplade från var, hur och när modeller skapas, ändras och fulländas. Baserat på denna princip, stödjer den skapade koherenta beredningsinformationen effektiva produktionstekniska arbetsprocesser.

Entydig och effektiv modellering av tillverkningsresurser och karakteristiska egenskaper kräver definitioner av dess områdesspecifika begrepp kombinerat med generiska representationsstrukturer. Denna kombination ger en stabil och standardiserad datamodell, som också kan representera tillverkningsresurser som utvecklas i framtiden. Den föreslagna modelleringsprincipen för karakterisering av tillverkningsresurser är giltig för alla typer av produktmekanismer.

För implementering av den föreslagna ökade integreringen krävs en modelleringsspecifikation. Genom tillämpning av modelldriven beredning har nya fördelar för industrin påvisats. Huvudprincipen att relatera data till dess giltiga sammanhang ger nya möjligheter för ökad produktivitet.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2013. p. 56
Series
Trita-IIP, ISSN 1650-1888 ; 13:02
Keywords
Process planning, modeling, ISO 10303, CADCAM, kinematics, Beredning, modellering, ISO 10303, CADCAM, kinematik
National Category
Mechanical Engineering
Research subject
SRA - Production
Identifiers
urn:nbn:se:kth:diva-122184 (URN)978-91-7501-766-2 (ISBN)
Public defence
2013-05-31, Brinellsalen, Brinellvägen 68, KTH, Stockholm, 13:00 (English)
Opponent
Supervisors
Funder
XPRES - Initiative for excellence in production researchVinnova
Note

QC 20130514

Available from: 2013-05-14 Created: 2013-05-14 Last updated: 2013-05-14Bibliographically approved

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Hedlind, MikaelLundgren, MagnusLundholm, Thomas

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