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Rapid prototyping and tooling industrial applications

Objetivo



In order to comply with the change and new demands of the market manufacturing companies have to be more competitive. This implies the need for a shorter time to market for new products, together with an increase of functionality and shape complexity of the products. Since these requirements cannot be met by one SME on its own this Will result in emerging strategic alliances in which more companies cooperate. The lifecycle of products becomes smaller, caused by smaller batch order sizes combined with a greater variety of the products. All contributors in the value chain starting from the product-idea and ending with product manufacturing are compelled to carry out the required development work in a shorter period of time.

For integrated parts, the process development cycle becomes a more and more knowledge consuming activity. In fact some products will not be developed completely once they appear on the market. However customers are not willing to pay more e.g. wait longer for extensive testing. In order to compensate for the resulting lack of important information exchange between areas and proper design checks and testing, a stricter planning of procedures and application of simultaneous engineering is necessary. Just in time delivery is the ruling issue here. By doing so, the iterative sequence of product development itself is accelerated so that more time is available for product evaluation. Research and development done in the 80's speeded up the last phase of the chain being the manufacturing of the products. Starting in the late 80's begin 90's the design phase of the products was extensively studied. Simultaneous engineering, concurrent engineering, design for assembly (DFA) played their role in speeding up the design-phase. One of the greatest achievements was the introduction of 3D CAD and its possibility of the connection to so called "rapid prototyping and tooling" technologies. These technologies enable designers to make a real product (a 3D plot instead of a 2D-drawing) directly from their design in a short time without human interference. Examples of those technologies are Stereolithography (SLA), Selective Laser Sintering (SLS) and Fused Deposition Modelling (FDM) (see reference list Chapter 8).

The next step is to transfer this knowledge to and implement techniques at SME's. It is known (reference EARP, Chapter 8) that the use of prototyping during the process development cycle influences the sequence of the development cycles. In the following Figure 1, the conventional sequence of the design of an injection mould is illustrated. Tests of the mould can be done only after it has been almost finished. Final assembly and tests are influenced in the line by a sequential process. A prototype helps to test the tool at an early stage and reduces both the development time and uncertainty of the development process.

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Coordinador

NEDERLANDSE ORGANISATIE VOOR TOEGEPAST NATUURWETENSCHAPPELIJK ONDERZOEK TNO*
Aportación de la UE
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6,Bevesierweg, Harssens (MML)
1780 AM DEN HELDER
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Última actualización: 22 Abril 2002

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Permalink: https://cordis.europa.eu/project/id/BRRT985097/es

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