Formal Representation of Machining Process and Systematizing of Machining Feature Model

本研究针对单刃切削加工，提出了与加工工艺模型直接对应的加工操作和加工形状的特征模型。从宏切削刀具尺寸、进给运动尺寸和包络约束个数的角度建立了加工操作的特征模型。从去除体积、已加工表面和表面纹理的角度建立了已加工形状的特征模型。这两个特征模型之间的联系是通过工作工具的概念来实现的。加工刀具由扫掠宏刀具、扫掠宏刀具的包络和加工刃组成。提出了加工过程的抽象模型和可表示线性方程组的工序规划抽象模型。我们还指出，只有15种加工操作。

This research deals with feature models of a machining operation and machined shapes for single cutting edge machining, which correspond directly to the machining process model. The feature model of the machining operation is proposed from the viewpoint of the dimension of a macro cutting tool, the dimension of feed motion, and the number of enveloping constraints. The feature model of the machined shape is also proposed from the viewpoint of the removal volume, the machined surface, and the surface texture. The linkage between both feature models is accomplished by the concept of a working tool. The working tool consists of the swept macro tool, the envelope of the swept macro tool, and the working edge. We proposed the abstract model of the machining process and the abstract model of operation planning which may represent the linear equations. We also pointed out that there are only 15 types of machining operations.