Abstract
This paper deals with feature models of machined shapes and a machining operation, which correspond directly to the machining process model. So far, the feature model of machined shape was modeled as the machining features, for example, hole, pocket, slot, etc. However, only tool behaviors are derived from giving the tool and the cutting motion to the machine tool. Therefore, we introduce the behavior model of cutting tool, working tool, as a feature models of machined shapes to connect the machining operation and machined shapes. The working tool consists of the swept macro tool, the envelope of the swept macro tool, and the working edge. The feature model of the machining operation, operating step, is also proposed from the viewpoint of the dimension of a macro cutting tool, the dimension of feed motion, and the number of enveloping constraints.
