JPS6161116U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a front view of the main parts of an embodiment of the face milling cutter of the present invention, Fig. 2 is a partial sectional view showing how chips are generated, and Fig. 3 shows the throw-away tip. a is a front view thereof, b is a partial sectional view from the side direction, c is a partial side view from diagonally above, d is a partial side view from diagonally below, and FIG. 4 is a modified example. FIG. 1...Main body, 2...Mounting groove, 3...Throwaway tip, 5...Champure, 7...Peripheral cutting edge, 9...Chip breaker groove, 10...Flat land.

Claims (1)

[Claims for Utility Model Registration] In a mounting groove 2 provided on the outer periphery of the main body 1, a throw-away tip 3 having a substantially triangular plate shape or a substantially square plate shape is arranged with a corner angle C. In the face milling cutter, the throw-away tip 3 has independently formed chip breaker grooves 9 that leave narrow flat lands 10 along each side of the front and back surfaces, and also has chip breaker grooves 9 formed at the apex portion thereof. The chamfers 5 are formed adjacent to each other so as to be given a relief angle α from the front and back sides, and the chamfer 5 on the side adjacent to the outer peripheral cutting edge 7 constitutes the upper cutting edge on the front side, and its axis In addition to making the rake angle in the direction a regular angle, the formation of the chip breaker groove 9 makes the rake angle in the radial direction a substantially regular angle, and the corner angle C is set at an angle of C=A+β. (A face milling cutter characterized in that A is 30° in the case of a substantially triangular plate, 45° in the case of a substantially square plate, and β is 4°<β<20°).