Abstract
This paper deals with an analysis of the chip area and cutting performance by oval end milling of an inclined surface using a contour path method. At first, the modeling of a cutter, an edge, a rake surface and a workpiece with an inclined surface are carried out using 3D-CAD. Secondly, the chip area is calculated by the interference of the rake surface and the chip volume. The influence of cutting conditions on the behavior of the chip area is shown and the evaluation value Ed for cutting performance is proposed. And also, the theoretical surface roughness by an oval end mill is analyzed and calculated. Values are compared with those of a machined surface.
