| 1. |
- Abele, Eberhard, et al.
(författare)
-
Learning factories for future oriented research and education in manufacturing
- 2017
-
Ingår i: CIRP annals. - : ELSEVIER SCIENCE BV. - 0007-8506 .- 1726-0604. ; 66:2, s. 803-826
-
Tidskriftsartikel (refereegranskat)abstract
- Learning factories present a promising environment for education, training and research, especially in manufacturing related areas which are a main driver for wealth creation in any nation. While numerous learning factories have been built in industry and academia in the last decades, a comprehensive scientific overview of the topic is still missing. This paper intends to close this gap by establishing the state of the art of learning factories. The motivations, historic background, and the didactic foundations of learning factories are outlined. Definitions of the term learning factory and the corresponding morphological model are provided. An overview of existing learning factory approaches in industry and academia is provided, showing the broad range of different applications and varying contents. The state of the art of learning factories curricula design and their use to enhance learning and research as well as potentials and limitations are presented. Conclusions and an outlook on further research priorities are offered. (C) 2017 Published by Elsevier Ltd on behalf of CIRP.
|
|
| 2. |
- Chen, Danfang, et al.
(författare)
-
A concept model for factory layout design
- 2008
-
Ingår i: Proceedings of the 2nd Swedish Production Symposium.
-
Konferensbidrag (refereegranskat)abstract
- This paper presents a concept model for factory layout design, based on knowledge gathered from industry and academy in the area of manufacturing system development. The concept model is developed as one way to reach a more neutral and open information model for easier use of the information in applications. The concept model also gives a better opportunity to support the factory planning and layout development activities.
|
|
| 3. |
- Chen, Danfang, 1981-, et al.
(författare)
-
Production pilot for co-operation in factory development
- 2011
-
Ingår i: Enabling Manufacturing Competitiveness and Economic Sustainability. - Berlin, Heidelberg : Springer. - 9783642238598 ; , s. 636-641
-
Konferensbidrag (refereegranskat)abstract
- This paper is dedicated to the factory development where management of established knowledge and company practiceis a big challenge because its process involves many competence domains such as process planning, productioninvestment and building construction, etc. This article presents an in-house developed production pilot for a better cooperationand support in factory development. Details about methodologies and the thinking behind the pilot will bepresented in the paper. The pilot aims to ease the sharing and reuse of knowledge and experiences, create a valueaddingworking process, and ease the collaboration and semantic interpretation between disciplines within factorydevelopment.
|
|
| 4. |
- Franzén Sivard, Gunilla, et al.
(författare)
-
Cross-disciplinary Design Based on the Digital Factory as a Boundary Object
- 2016
-
Ingår i: Procedia CIRP. - : Elsevier. - 2212-8271. ; , s. 565-570
-
Konferensbidrag (refereegranskat)abstract
- In the domain of developing production systems, the design of a good factory is typically distributed over many disciplines and organizations to cover all involved technologies and levels of detail (process, logistics, machinery etc.). Modelling and simulation used to support the design process within each of the disciplines typically represent different contexts and perspectives. To cross the discipline borders and share experiences, to encourage innovation and make holistic decisions, one challenge is to interrelate various digital models and to reach a mutual system understanding between stakeholders. This paper presents a study based on principles from Social Science, Production Engineering, Computer Science and Information Design to address cross-disciplinary collaboration. Principles concerning visual communication and theories in regard to tangible boundary objects are used to clarify how to describe production system interdependencies in a digital factory context. Work in process of implementing a digital factory framework based on the principles is described, with a use case demonstrating the development of a digital factory for a new type of automotive vehicle.
|
|
| 5. |
- Kjellberg, Torsten, et al.
(författare)
-
The machine tool model-A core part of the digital factory
- 2009
-
Ingår i: CIRP annals. - : Elsevier BV. - 0007-8506 .- 1726-0604. ; 58:1, s. 425-428
-
Tidskriftsartikel (refereegranskat)abstract
- Machine tool models - the core parts of manufacturing systems - are important for many purposes during development of new or existing systems, from investment, through process planning, NC, layout design, usage, to end of life. Today a lot of important machine tool information is not managed and stored for easy reuse. A machine tool modelling approach is presented and structured in line with principles for generic standards utilizing a manufacturing system ontology for modelling machine tool concepts. It forms a contribution to management of information and knowledge in manufacturing.
|
|
| 6. |
- Li, Yujiang
(författare)
-
Architecting model driven system integration in production engineering
- 2017
-
Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- System integration is a key enabler to maximize information value in an engineering context. The valuable information is normally represented by information models which play a decisive role in the implementation of system integration. The information models are designed to efficiently and effectively capture, process and communicate information among different functional and business units. However, use of the information models in implementing system integration is challenged by insufficient support from current settings of modeling architectures. This situation calls for new strategies to ease the use of information models.To address this challenge, this study presents a new twofold solution: Model driven system integration. It includes 1) a modeling architecture to guide the development of information models and 2) an integrated implementation process to guide the use of information models. Thus, this work improves practical applicability of an information model in its entire modeling lifecycle.The results contribute not only to the performance of modeling practices but also to improved understanding of information modeling in system integration. Implementation contexts and implementation models are introduced to develop an implementation-oriented modeling architecture. Further, the potential of information models as a knowledge base to sup-port implementation practices is identified.To concretely discuss behaviors and structures of information models, this study adopts ISO 10303 and the related standards as major references of existing information models.Case studies on model driven system integration validate this research in scenarios concerning kinematic modeling, kinematic error modeling, cutting tools classification and product catalogue modeling. Model driven system integration exhibits high efficiency in implementation, enhanced interoperability and increased value of information models.
|
|
| 7. |
- Li, Yujiang, 1985-, et al.
(författare)
-
Cutting Tool Data Representation and Implementation Based on STEP AP242
- 2013
-
Ingår i: Smart Product Engineering. - Berlin/Heidelberg : Springer Berlin/Heidelberg. - 9783642308161 - 9783642308178 ; , s. 483-492
-
Konferensbidrag (refereegranskat)abstract
- For cutting tool data exchange in manufacturing CAx (Computer-Aided technologies), standardized representation and classification of items and properties is important. ISO 13399 (Cutting tool data representation and exchange) provides a solution to represent cutting tool data classified with an ISO 13584 (Parts Library, PLib) based dictionary. However, ISO 13399 does not support classification of shape geometry directly, which limits its use. Another limitation is representing GD&T (Geometric Dimensioning and Tolerancing) as simplified general properties, which does not fulfill high semantic precision and validation rules. This research provides a unified solution to represent cutting tool parameters integrated with geometry and dedicated properties based on STEP AP242 (ISO 10303-242 Managed model-based 3D engineering). Standardized libraries such as the ISO 13399 dictionary can be reused with the modeling approach for AP242 cutting tool representation. Software is developed to validate and demonstrate how this solution facilitates the data integration process to support CAx applications.
|
|
| 8. |
- Li, Yujiang, 1985-
(författare)
-
Development architecture for industrial data management
- 2013
-
Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Standardized information modeling is important for interoperability of CAx systems. Existing information standards such as ISO 10303 STEP have been proposed and developed for decades for this purpose. Comprehensive data structure and various implementation methodologies make such standards strong in support of different industry domains, information types, and technical requirements. However, this fact also leads to increased implementation complexity and workloads for CAx system developers.This licentiate proposes the development architecture, STEP Toolbox, to help users implement standards with a simplified development process and minimal knowledge requirements on standards. Implementation difficulties for individuals are identified with analysis on implementation of the information standards in three aspects: tasks, users, and technology. Then the toolbox is introduced with an illustration of design of behavior and structure. Case studies are performed to validate the toolbox with prototypes. Internal and external observation has shown the around two-month learning process skipped and a great amount of workload reduction in implementation with the utilization of this architecture.
|
|
| 9. |
- Li, Yujiang, 1985-, et al.
(författare)
-
Representation and exchange of digital catalogues of cutting tools
- 2014
-
Ingår i: ASME 2014 International Manufacturing Science and Engineering Conference, MSEC 2014 Collocated with the JSME 2014 International Conference on Materials and Processing and the 42nd North American Manufacturing Research Conference. - 9780791845806 ; , s. V001T04A027-
-
Konferensbidrag (refereegranskat)abstract
- Information management for manufacturing resources such as cutting tools is an important research topic in the context of cloud manufacturing. Vendors and customers usually use catalogues to communicate information for such manufacturing resource. Incompatibilities of information in syntax, semantics, and structure among supply chains often result in inefficient manual sharing and management of the catalogue information. It is difficult for cloud based applications to pool information from various sources. This communication failure calls for a system neutral solution for data modeling and exchange to enhance interoperability of the cutting tool catalogue information. Previous studies has present solutions for representation of the cutting tool information with STEP AP242 (ISO/DIS 10303-242) with semantic classification referring to a PLib (ISO 13584, Part Library) based dictionary. This approach can be extended for the catalogue modeling, due to functionalities for specification and configuration control of general product variants in the same standard. With a modeling approach with standardized information schemas, system architecture to guide implementation is proposed to enhance the communication in practice. Relative elements to represent vendors' catalogues and customers' requirements are modeled. Associations to the PLib-based dictionary complete semantics and enable information mapping between vendors and customers. Principles of the mapping are identified to facilitate implementation of related software systems. Prototypes are developed to verify the proposed system architecture. The proposed solution is promising to migrate to other types of products than cutting tools, because the data models are based on the general product models defined in AP242.
|
|
| 10. |
- Li, Yujiang, 1985-, et al.
(författare)
-
System integration for kinematic data exchange
- 2014
-
Ingår i: International journal of computer integrated manufacturing (Print). - : Taylor & Francis. - 0951-192X .- 1362-3052.
-
Tidskriftsartikel (refereegranskat)abstract
- Industry needs a system neutral solution for exchange of kinematic models. In this article, the first known valid implementation of kinematic mechanisms based on ISO 10303 Standard for the Exchange of Product (STEP) is presented. The result includes an implementation framework and two developed prototypes. Two major challenges of standard-based development are identified and generalised: data integration and system integration, which are solved by the framework. The two prototypes are implemented to establish kinematic data exchange between Siemens NX® and STEP-NC MachineTM via STEP AP214 files. Experiences of design and development of the applications are presented, and a validated case study of data exchange using the developed applications is shown. There are other attempts of using STEP as basis for modelling, but as the first valid STEP implementation on kinematics, this approach demonstrates the feasibility of pure STEP-based data exchange for kinematic mechanisms. The prototypes also show potential of utilising the framework for general standard implementations. The research is expected to motivate deeper understanding and extensive applications of the STEP standard in industry and academia.
|
|
