Although there are many types and shapes of milling cutters, they can all be classified into two basic forms: cylindrical milling cutters and face milling cutters. Each tooth can be regarded as a simple turning tool. More teeth. Therefore, only through the analysis of one tooth, the geometric angle of the entire milling cutter can be understood. Take the face milling cutter as an example to analyze the geometric angle of the milling cutter. A tooth of a face milling cutter is equivalent to a small turning tool, and its geometric angle is basically similar to that of an external turning tool. The plane is the base plane. Therefore, each tooth of the face milling cutter has four basic angles: rake angle, relief angle, main declination angle and edge inclination angle.
(1) Front angle γο: the angle between the front and the base plane, measured in an orthogonal plane.
(2) Relief angle αo: the angle between the back and the cutting plane, measured in the orthogonal plane.
(3) Leading angle κr: the angle between the main cutting plane and the assumed working plane, measured in the base plane.
(4) Edge inclination λs: the angle between the main cutting edge and the base surface.
The relevant angles of the face milling cutter in the main profile system are shown in Figure 4-2. When designing, manufacturing, and sharpening, the relevant angles in the feed and back cutting tool profile system are also required, as well as the radial front angle γf and axial rake angle γp.
