Computer aided part programming applications, available within state-of-the-art CAD/CAM systems, fail to generate high quality part programmes, in most cases due to a poor understanding of shopfloor operation and constraints. Usually, there is lack of manufacturing culture and expertise in these systems. The development of applications that implement sound machining practices and provide manufacturing expertise to part programmers is a key issue, if robust part programmes, requiring no editing at the shopfloor level and enabling the use of high material removal rates, are to be achieved. This paper presents an enhanced rectangular pocket machining strategy, based on the data derived from an experimental work on the effect of machining strategies and parameters on the quality of machined parts.
Many studies have been presented discussing the use of Discrete Event Simulation (DES). This paper presents an overall view on the use of simulation, as a technique to improve manufacturing competitiveness. Considering the several functions that can be identified within a manufacturing system, DES roles will be presented. The benefits of simulation will be demonstrated with two case studies developed in Portuguese industrial companies. A new application area of DES is being developed at IPS and INETI. It will be presented the possibility of using DES, integrated with traditional functions within a company, to support process planning together with manufacturing planning and control, in a simultaneous engineering environment.
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