Model Of Material Removal Volumes And Its Inference And Evaluation For Process Planning

In machining a metal part, successive cutting operations are generally carried out, each of which removes material from the workpiece. A method of specifying what to remove in each operation is required. It is sometimes feasible to use features on the design of the part to determine what material to machine away in order to make the part. Very often, however, it will be desirable to machine the workpiece so that it has temporary features which do not appear on the design, or which do not correspond exactly to design features. To handle this situation, the dissertation puts forward a method for describing the shape of material to be removed by machining operations which is independent of the design. Shapes of volumes to be removed are generated during process planning and used for NC-programming. The dissertation constructs a relatively completed library of material removal volumes and describes the elements of it in detail. The dissertation also constructs the inference and evaluation system of the model of material removal volumes. The recognition algorithm of material removal volumes is advanced.