CN205888191U - A ball end milling cutter - Google Patents

Abstract

A ball-end milling cutter comprises a cutter handle part and a cutter edge part which are arranged in sequence, wherein the cutter edge part comprises a first cutter edge and a second cutter edge, the first cutter edge comprises a first circumferential edge spirally wound on the side circumferential surface of the cutter edge part and a first arc-shaped bottom edge arranged on the end surface of the cutter edge part, the second cutter edge comprises a second circumferential edge spirally wound on the side circumferential surface of the cutter edge part and a second arc-shaped bottom edge arranged on the end surface of the cutter edge part, a chip discharge groove is formed between the first circumferential edge and the second circumferential edge, and a chip inlet groove is formed between the first arc-shaped bottom edge and the second arc-shaped bottom edge; among the prior art, the end sword cuts with the face at the cutting process, the utility model discloses a design into the arc to the end sword, with the processing of point and work piece contact in the cutting process, reduce the cutting resistance, improve the machining precision, the chip inlet groove area that arc end sword and cutting edge portion's terminal surface enclose is bigger in addition, makes the chip removal more smooth in the course of working.

Description

A ball end milling cutter

technical field

The utility model relates to a processing tool for industrial cutting, in particular to a ball end milling cutter.

Background technique

Milling cutter, which has a cylindrical shape and has a cutting edge on the circumference and bottom, is driven by the machine tool to rotate to cut the workpiece; the ball end milling cutter is a kind of milling cutter, mainly used for processing grooves Groove and step surface, etc., the cutter teeth are on the circumference and end surface. In the prior art, the chip groove of the bottom edge of the ball end milling cutter is linear. During the cutting process, the cutting is performed on the surface, which has high cutting resistance and low cutting accuracy. And chip removal is not smooth.

Utility model content

Aiming at the shortcomings in the above background, the utility model now provides a ball end milling cutter with small cutting resistance, high cutting precision and smooth chip removal.

Its realized technical scheme is as follows:

A ball end milling cutter, comprising a shank portion and a blade portion arranged in sequence, the blade portion includes a first blade and a second blade, the first blade includes a first peripheral edge spirally wound on the peripheral surface of the blade portion and a set The first arc-shaped bottom edge on the end face of the blade portion, the second blade includes a second circumferential edge spirally wound on the side peripheral surface of the blade portion and a second arc-shaped bottom edge arranged on the end face of the blade portion, the first circumference A chip flute is provided between the edge and the second peripheral edge, and a chip groove is provided between the first arc-shaped bottom edge and the second arc-shaped bottom edge.

Preferably, the included angle between the first arc-shaped bottom edge and the second arc-shaped bottom edge is 93°.

The beneficial effects of the utility model are: in the prior art, the bottom edge cuts with a surface during the cutting process, but the utility model designs the bottom edge in an arc shape, and processes it with a point in contact with the workpiece during the cutting process to reduce cutting resistance , improve the machining accuracy, and the area of the chip groove surrounded by the arc-shaped bottom edge and the end face of the cutting edge is larger, which makes the chip removal more smooth during the machining process.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

Fig. 1 is the overall schematic diagram of the utility model;

Fig. 2 is an enlarged view of the right view of the utility model.

detailed description

As shown in Figures 1 and 2, a ball end milling cutter includes a shank portion 1 and a blade portion 2 arranged in sequence, the blade portion 2 includes a first blade and a second blade, and the first blade includes a helically wound The first circumferential edge 21 on the peripheral surface of the blade portion 2 side and the first arc-shaped bottom edge 23 arranged on the end surface of the blade portion 2, the second blade includes the second peripheral edge 22 and the second peripheral edge which are spirally wound on the peripheral surface of the blade portion side. The second arc-shaped bottom edge 24 arranged on the end face of the blade portion, a chip removal groove 25 is arranged between the first circumferential edge 21 and the second circumferential edge 22, the first arc-shaped bottom edge 23 and the second arc-shaped bottom edge 24 There is a chip groove 26 between them; the angle between the first arc-shaped bottom edge 23 and the second arc-shaped bottom edge 24 is 93°; by designing the bottom edge into an arc shape, during the cutting process The first arc-shaped bottom edge 23 and the second arc-shaped bottom edge 24 are processed in point contact with the workpiece to reduce cutting resistance and improve machining accuracy. The area of the chip groove 26 surrounded by the end face of the chip is larger, so that the chip removal is smoother during the machining process.

According to the disclosure and enlightenment of the above specification, those skilled in the art to which the present utility model belongs can also make appropriate changes and modifications to the above embodiment. Therefore, the utility model is not limited to the specific implementation methods disclosed and described above, and all basic transformations of various mechanisms based on this patent should also be included in the protection scope of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for convenience of description, and do not constitute any limitation to the present invention.

Claims (2)

1. A ball end milling cutter, comprising a shank portion and a blade portion arranged in sequence, characterized in that, the blade portion comprises a first blade and a second blade, and the first blade includes a helically wound The first circumferential edge on the peripheral surface of the blade part side and the first arc-shaped bottom edge arranged on the end surface of the blade part, the second blade includes the second peripheral edge and the second peripheral edge which are spirally wound on the peripheral surface of the blade part side On the second arc-shaped bottom edge on the end face of the blade part, a chip removal groove is provided between the first peripheral edge and the second peripheral edge, and the first arc-shaped bottom edge and the second arc-shaped bottom edge There is a chip groove between the shaped bottom edges. 2. The ball end milling cutter according to claim 1, the angle between the first arc-shaped bottom edge and the second arc-shaped bottom edge is 93°.