Abstract
Abstract Feature modelling is now being used quite extensively in the context of manufacturing of parts. It is shown that the use of features in product models, instead of geometric information only, can be very useful in assembly as well. This is done by introducing two types of assembly features, handling and connection features, and by outlining their usability in several assembly planning modules. It is also shown that in assembly feature modelling the concept of internal freedom of motion can be profitably used. Internal freedom of motion can be represented with visibility maps, which can be transformed using the central projection method. An extension of the central projection method, projecting a visibility map onto a cube, is described.
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