Abstract

In several applications of Rapid Prototyping (RP), the tool must travel along a set of curves in the plane to generate each layer of the part. The total processing time for a layer is the sum of the times for the movements of the tool, which can be in one of two modes: when it is switched on (machining time), and when it is switched off (non-machining time). Typically, the machining velocity, at which the tool travels along each curve is decided by technological factors. However, for any reasonably complex shape, there is a significant portion of the tool motion while jumping from the end of one curve to the beginning of the next curve, during which time the tool is not machining. It is therefore interesting to see if we can reduce the non-machining time in RP, and this paper proposes a genetic algorithm attempting to do so. Results of a test case are also presented.

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