Natural Integration Levels of the Process Planning Function

  • J. Christensen
  • N. E. Larsen


The increased competition has been realized by the leading manufacturing companies, through for example increased flexibility and quality and at the same time reduced leadtimes and price level. Job shop manufactures with high product assortment and low production volume do not benefit from process plans (routings) optimized according to local criteria and sub-optimized productions planning approaches are not requested. This paper deals with integrated approaches of the process planning function which can take the requirements and needs of the surrounding activities into account. It also describes and emphasizes the need for flexible and dynamic process plans. Concepts for solving the integration issue based on constrained information theory are also developed. The concepts provided for integration is diverted from thc discovery of time dependent tasks within the process planning domain. It describes the natural integration levels which is identified in the phases within the process planning domain which corresponds to the phases a product has to pass through from development to production.

The paper thereby mainly addresses order manufactures, where the possibilities of using alternative routings on shop floor level are apparent. Another essential characteristic of the production task is that products, processes and plans are accommodated to the existing resource profile, which represents the long tern accessibility of machines, tools, workers and other production facilities.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. /Alting 90/ Leo Ailing & H. Zhang: Trends in the Development of the Future Integrated Manufacturing Systems, ASME Manufacturing International 90, Atlanta, Georgia, USA, 1990.Google Scholar
  2. /Browne 88/ Jimmie Browne & John Harhen & James Shivnan: Production Management Systems-A CIM Perspective, Addison Wesley, 1988.Google Scholar
  3. /Clausen 91/ John Clausen: Et koncept for dynamisk integration mellem proeesplanitegning og produktionsstyring A concept for dynamic integration between process planning and production control), Institute of Production Management and Industrial Engineering, Technical University of Denmark, 1991.Google Scholar
  4. /Chang 85/ Tien-Chien Chang & Richard A. Wysk: An introduction to automated process planning systems, Prentice-Hall, 1985.Google Scholar
  5. /Christensen 91/ John Christensen & Claus Bredvig Nielsen: Reduktion af gennemløbstid gennem integration (Reduction of leadtime through integration), Laboratory of Process and Production Engineering, Technical University of Denmark, 1991.Google Scholar
  6. /Krause 89/ Frank-Lothar Krause et al: Technological Planning of Alternative Processes for Flexible Manufacturing Systems, Institute Werkzeugmaschinen und Fertigungstechnik, Techniche Universität Berlin, IFIP, 1989.Google Scholar
  7. /Larsen 90/ Niels Erik Larsen, Institute of Manufacturing Engineering & John Clausen, Institute of Production Management and Industrial Engineering: Opgavefordelingen mellem process-og produktionsplanlcegningen (The division of tasks between process and production planning), Technical University of Denmark, 1990.Google Scholar
  8. /Larsen 91–2/ Niels Erik Larsen, Simos A/S: Effects from use of alternative routings. Submitted for the 24th CIRP International Seminar on Manufacturing Systems, Denmark, June 1992.Google Scholar
  9. /Savage 87/ Charles M. Savage & D. Appleton: CIM and Fifth Generation Management, SME blue book series ISBN 0895–5085, 1987.Google Scholar

Copyright information

© Department of Mechanical Engineering University of Manchester Institute of Science and Technology 1992

Authors and Affiliations

  • J. Christensen
    • 1
  • N. E. Larsen
    • 2
  1. 1.Laboratory of Process and Production Engineering, Institute of Manufacturing Engineering TechnicalUniversity of DenmarkDenmark
  2. 2.Simos A/S, Simulation Modelling ScandinaviaHørsholmDenmark

Personalised recommendations