JPS61102414U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment of the indexable end mill according to the present invention. Figure 2 is its side view. FIG. 3 is a front view showing another embodiment of the indexable end mill according to the present invention. Figure 4 is its side view. Figure 5 is a front view of a conventional indexable end mill using a triangular positive tip. Figure 6 is its side view. Figure 7 is a front view of a conventional indexable end mill using a round positive tip. Figure 8 is a side view. Figure 9 is a front view of a conventional indexable end mill using a square positive tip. FIG. 10 is a side view thereof. Figure 11 is a patent application filed by the present inventors in 1973.
A perspective view of the throw-away tip proposed in No. 9-036070. FIG. 16 is a perspective view of a throw-away tip for a bottom blade that the inventors of the present invention previously proposed in Japanese Patent Application No. 59-036070. FIG. 17 is a perspective view of a throw-away tip used in another embodiment of the throw-away end mill (for R cutting) according to the present invention.
FIG. 18 is a diagram showing the relationship between table feed amount and machine power consumption. 1: cutter body, 2: octagonal positive chip, 3
: Square positive tip, 4: Main cutting edge, 5: Rib, 6:
Corner part, 7: Mounting hole, 8: Peripheral cutting edge, 9: Mounting hole, 10: Octagonal negative chip, 11: Main cutting edge,
12: Square negative chip, 12: Round positive chip, S
a: step amount, β: constant arrangement angle, α: tilt angle,
14: Triangular positive chip, 15: Round positive chip, 1
6: Square positive chip.

Amendment September 30, 1986 The name of the invention is amended as follows. Name of the invention Step-cutting indexable end mill The scope of the utility model registration claims and the brief description of the drawings are amended as follows.

[Claims for Utility Model Registration] 1. An indexable end mill in which the outer main cutting edge is shifted in steps in the axial direction, in which the indexable tip constituting the main cutting edge is a polygonal positive tip with a corner angle of 100 to 150 degrees. A step-cutting indexable end mill characterized in that the tip of the end mill is provided with a round tip or a polygonal tip. 2. The step-cutting type indexable end mill according to claim 1, wherein the indexable tip is a positive tip having a concave portion connected to a polygonal upper cutting edge. 3. A step-cutting indexable end mill according to claims 1 and 2 of the Utility Model Registered Claims, characterized in that the outer peripheral main cutting edge has an inclination angle and the cutting edge is arranged in a saw-like shape. 4. A step-cutting indexable end mill according to any one of claims 1 to 3 of the claims registered as a utility model, characterized in that the main cutting edges are arranged in a spiral pattern. 5. The step-cutting type indexable end mill according to any one of claims 1 to 4, which is characterized in that a rib is provided between the indexable tips constituting the main cutting edge.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing an embodiment of the step-cutting indexable end mill of the present invention, and FIG. 2 is a side view thereof. FIG. 3 is a front view showing another embodiment of the indexable end mill according to the present invention. Figure 4 is its side view. Figure 5 is a front view of the main parts of a conventional indexable end mill using a triangular positive tip. Figure 6 is its side view. Figure 7 is a front view of the main parts of a conventional indexable end mill using a round positive tip.
Figure 8 is a side view. Figure 9 is a front view of the main parts of a conventional indexable end mill using a square positive tip. FIG. 10 is a side view thereof. Figure 11 is a front view of the main parts of the throw-away chip that the inventors of the present invention proposed in Japanese Patent Application No. 59-36070. FIG. 12 is a side view thereof. FIG. 13 is a perspective view of an octagonal positive chip used in the end mill of the present invention. FIG. 14 is a perspective view of the same square positive chip. FIG. 15 is a perspective view of an octagonal negative tip used for the outer main cutting edge of an end mill, which the present inventors proposed in Japanese Patent Application No. 59-36070, and FIG. 16 is a perspective view of a throw-away tip for the bottom edge. FIG. 17 is a perspective view of a round positive tip used for the bottom blade of the indexable end mill (for R cutting) according to the present invention. FIG. 18 is a diagram showing the relationship between table feed amount and machine power consumption. 1: cutter body, 2: octagonal positive chip, 3
: Square positive tip, 4: Main cutting edge, 5: Rib, 6:
Corner part, 7: Mounting hole, 8: Peripheral cutting edge, 9: Mounting hole, 10: Octagonal negative chip, 11: Main cutting edge,
12: Square negative chip, 13: Round positive chip, S
a: step amount, β: constant arrangement angle, α: tilt angle,
14: Triangular positive chip, 15: Round positive chip, 1
6: Square positive chip.

Claims (1)

[Claims for Utility Model Registration] (1) An indexable end mill in which the main cutting edge on the outer periphery is shifted in steps in the axial direction, in which the indexable tip constituting the main cutting edge has a corner angle of 100 to 150 degrees. A step-cutting indexable end mill characterized by having a square positive chip and having a round or polygonal chip at the tip of the end mill. (2) The step cutting type indexable end mill according to claim 1, wherein the indexable tip is a positive tip having a concave portion connected to the upper cutting edge of the polygonal tip. (3) A step-cutting indexable end mill according to claims 1 and 2 of the utility model registration claim, characterized in that the outer peripheral main cutting edge has an inclination angle and the cutting edge is arranged in the shape of a saw blade. (4) The step-cutting indexable end mill according to any one of claims 1 to 3 of the utility model registration claim, characterized in that the main cutting edges are arranged in a spiral shape. (5) The step-cutting indexable end mill according to any one of claims 1 to 4, which is characterized in that a rib is provided between the indexable tips constituting the main cutting edge.