Fraunhofer-Institut für Produktionsanlagen und Konstruktionstechnik IPK

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  • Publication
    Model based analysis and reengineering of business processes
    ( 1995)
    Mertins, K.
    ;
    Edeler, H.
    ;
    Schwermer, M.
    When approaching targets like strenghtening productivity of the company by improving product quality, reducing lead time and optimizing market driven pricing. companies start to concentrate on their main business processes, on gearing all functions and ressources to the process they are involved in and on improving communication by sharing information widely within the processes. In the following the approach of Integrated Enterprise Modelling IEM using Object-Oriented Modelling Technique to model and to clarify the interaction of enterprise components will be introduced. The method will be explained as planning tool by an example. The example describes the optimization of future CAD/CAM-applications as a communication instrument within the process to develop gears.
  • Publication
    Core process design
    ( 1994)
    Mertins, K.
    ;
    Edeler, H.
    ;
    Sauer, O.
    To live a life beyond lean production European companies have to reorganize their structures using such strategic tools as value management, outsourcing and flexible manufacturing concerning their specific European characteristics. On one hand several methods have been worked out to support the make or buy decision process whether to keep services and the manufacturing of parts and subcomponents in-house or to buy them. Unfortunately cost oriented approaches like those based on transaction theory lack quantification of parameters because of traditional calculation- and controlling systems. Their practical use is yet limited. But during the last years it has become clear, that a proper use of make or buy concerning a corporations mix of strategies can strengthen its competitiveness. On the other hand various techniques help to structure the whole spectrum of parts into sets or part families to support the introduction of group technology or different forms of cellular manufacturing. Yet there still is a lack of methods that include both make or buy decisions derived from the company's stategy as well as the structuring of the production process based on the chosen core assemblies and components. The link between corporate and business strategies as described in the Swiss St. Galler management model (Gomez, 1993) and a set of criteria to identify a company's strategic 'make' components has been discussed in the previous paper. This article deals with a methodology to support the tasks on the modelling-/structuring level and the technological-/organizational level. The two mentioned papers describe a comprehensive approach to link the two issues of strategic make or buy and factory structuring and therefore support all tasks of comprehensive planning.