抄録
This paper deal with cutting mechanism and cutting performance of machining for inclined sur&ce by an oval end mill. The cutting edge shape of the oval end mill is very complex, so we use 3D-CAD for calculation of chip area during machining. Then cutting performance is discussed using the evaluate value calculated by the multiplication of the chip area and the length from Z axis to the gravity of the chip area. And also the theoretical jvalue of surface roughness of machined surface is calculated and compared with the value by experiment.
