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The Application of CIM to Welded Fabrication

Objective

The objective of this project was to apply CIM concepts to the heavy welded-fabrication industry, replacing the traditional "islands of automation" approach with an integrated approach which could be developed and exploited economically. The programme of work was as follows:
-analysis of heavy fabrication manufacturing systems using Data and Functions Networking (DAFNE) methodology
-design of a generalised CIM framework using DAFNE
-development of selected production subsystems within the CIM framework, eg automated welding cells with CAD-simulation cell-instrumentation quality control linkages
- study of computer-aided production management.
The objective of this project was to apply computer integrated manufacture (CIM) concepts to the heavy welded fabrication industry, replacing the traditional islands of automation approach with an integrated approach which could be developed and exploited economically. The programme of work was as follows: analysis of heavy fabrication manufacturing systems using data and functions networking (DAFNE) methodology, design of a generalized CIM framework using DAFNE, development of selected production subsystems within the CIM framework (eg automated welding cells with computer aided design (CAD) simulation cell instrumentation quality control linkages) and study of computer aided production management.
Arc welding cells were developed together with the links to the necessary subsystems. Quality inspection, instrumentation, databases, CAD, simulation and offline programming were defined and demonstrated. The organizational and production models of heavy fabrication were studied with the use of appropriate methodology tools (DAFNE), and a general reference model for the industry type was produced.
Successful implementation of CIM architectural model, adapted to welding in heavy industry (eg shipbuilding), demonstrated the opportunites for considerable improvements in productivity and product quality and will help to make the industry more responsive to market needs. The 2 project demonstration cells made use of simulation and offline programming through the application of modular and structured techniques for generating welding torch trajectories.
Weld cell performance was also monitored via a specially constructed data gathering and file system which had potential for real time intervention, including adaptive control of the weld production activities.
Arc-welding cells were developed, together with the links to the necessary subsystems: quality inspection, instrumentation, databases, CAD, simulation and off-line programming were defined and demonstrated. The organisational and production models of heavy fabrication were studied with the use of appropriate methodology tools (DAFNE), and a general reference model for the industry type was produced.
Successful implementation of a CIM architectural model, adapted to welding in heavy industry (eg shipbuilding), demonstrated the opportunities for considerable improvements in productivity and product quality and will help to make the industry more responsive to market needs.
The two project demonstration cells made use of simulation and off-line programming through the application of modular and structured techniques for generating welding torch trajectories.
Weld-cell performance was also monitored via a specially constructed data-gathering and file system which had potential for real-time intervention, including adaptive control of the weld production activities.
Exploitation
The industrial partners in the project have adopted the results and developed them for their own industrial use.

Coordinator

THE WELDING INSTITUTE
Address
Granta Park, Great Abington
CB1 6AL Cambridge
United Kingdom

Participants (5)

AALBORG SHIPYARD LTD
Denmark
Address

9100 Aalborg
DANISH WELDING INSTITUTE
Denmark
Address
Park Alle 345
2605 Brondby
Italsiel SpA
Italy
Address
Via Isonzo 21B
00198 Roma
ODENSE STEEL SHIPYARD LTD
Denmark
Address
Kystvejen /Munkebo P.o. Box 176
5100 Odense
Università degli Studi di Genova
Italy
Address
Via All'opera Pia 11A
16145 Genova