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Your search keyword '"information models"' showing total 3 results
Start Over Descriptor "information models" Publisher kth, industriell produktion
3 results on '"information models"'

1. Rapid Production Changes through the Coordination of Factory Layout Models and Activities

Author

Shariatzadeh, Navid, Sivard, Gunilla, Lindberg, Lars, Shariatzadeh, Navid, Sivard, Gunilla, and Lindberg, Lars

Abstract

Changing the design of a factory in practice involves the change of a number of parallel and interdependent systems such as the machining resources and robot cells, the supply systems for electricity, water, air, heat and cooling, pneumatics and hydraulics, the systems for chip and waste handling, process fluid, communication networks, sprinkler systems, as well as the building construction. Thus the coordination of information and models, as well as of the design work activities, is of utmost importance to achieve a fast and flexible development process. This paper presents the results from a research project focusing on computer aided work processes and the communication of models between various stake holders in layout design. The primary objective was to provide methods for a coordinated factory development process with a facilitated information exchange and reuse of knowledge and models. Results concerning required layout and PLM (Product Lifecycle Management) functionalities, as well as modelling and communication principles, tested in an industrial case, are presented., QC 20140124

Published
2013
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2. Information Management for Cutting Tools : Information Models and Ontologies

Author

Nyqvist, Olof

Subjects
Information Models, Reference Data, Cutting Tools, Ontologies, Systemvetenskap, informationssystem och informatik, International Standards, Production Engineering, Information Systems
Abstract

There is an increasing demand for the exchange of important product and manufacturing information in a computer interpretable way. Large manufacturing companies are dependent on having access to the necessary information electronically. If they do not get information about their manufacturing resources from their vendors, they will buy their resources elsewhere, or they will have to create the information themselves. In the end, the cost of the manufactured products will increase to accommodate the cost increase from having to create, integrate, and maintain this information. In order to solve this problem, the use of international standards for product data is required. One area where such a standard is required is the area of cutting tools. This thesis describes the requirements for an international standard for the representation and exchange of cutting tool information and the resulting information model together with necessary reference data. The representation of cutting tool information using an international standard requires a generally applicable information model which is used together with a reference data library. The reference data provides the explicit, unambiguous concepts necessary for successful information exchange. ISO 13399, the international standard that is the result of this research project, uses P-Lib (ISO 13584) to define its reference data. To successfully use P-Lib in this way, requires some basic assumptions to be made, since P-Lib is originally developed for component catalogs. As a result of the chosen representation technique, the standard is capable of accommodating current and future developments of cutting tools, e.g. multi function tools. QC 20100901

Published
2008

3. Machining description as a view of STEP-NC data

Author

Hedlind, Mikael, Lundgren, Magnus, Lundholm, Thomas, Kjellberg, Torsten, Hedlind, Mikael, Lundgren, Magnus, Lundholm, Thomas, and Kjellberg, Torsten

Abstract

Machining description for a CNC machining process has the purpose to give information about the machining process and relations between, product, process and resources. Currently used information model requires time consuming and expensive procedures during the manufacturing preparation process to create this documentation. This paper presents how machining descriptions can be generated more efficient. We have studied how ISO 10303 standard for product data representation and exchange, known as STEP, can be utilized in the manufacturing preparation process. We present how information requirements for machining descriptions containing a relationship between a machined face, its tolerances and used cutting tool can be met. To demonstrate our research result we have developed a prototype system where STEP data models of the machiningprocess, workpiece with tolerances, fixture and cutting tools are used and integrated. We have proven that information separation of data, to create machining descriptions for CNC machining, is currently done unnecessarily early in the manufacturing preparation process., QC 20130610

Published
2008

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