CN223277242U

CN223277242U - Combined-blade integral end mill

Info

Publication number: CN223277242U
Application number: CN202422540964.7U
Authority: CN
Inventors: 魏明朗; 黄佳福; 洪煊城
Original assignee: Xiamen Bereton New Materials Co ltd
Current assignee: Xiamen Bereton New Materials Co ltd
Priority date: 2024-10-21
Filing date: 2024-10-21
Publication date: 2025-08-29
Anticipated expiration: 2034-10-21

Abstract

The utility model discloses a combined-blade integral end mill, which comprises a cutter handle and a cutter head arranged at the front end of the cutter handle, wherein the cutter head sequentially comprises a front cutting part, a connecting part and a rear cutting part from front to back, the diameter of the front cutting part is smaller than that of the rear cutting part, a plurality of first blades are circumferentially arranged on the side wall of the front cutting part, a plurality of second blades which are matched with the first blades in number are circumferentially arranged on the side wall of the rear cutting part, an included angle is formed between the plane where the first blades are located and the plane where the second blades are located, and the degree of the included angle is 1/5~4/5 (360/number of blades). According to the utility model, the front and rear groups of cutting blades are combined through the connecting part, and an included angle is formed between planes of the two types of cutting blades, so that each group of cutting blades has an independent rake design, the size of the rake is ensured, the rake tends to be a negative rake when the diameter of the cutting part is too small, the cutting resistance is reduced, and light and rapid free cutting is realized.

Description

Combined-blade integral end mill

Technical Field

The utility model relates to the technical field of milling cutters, in particular to an integral end mill with a combined blade.

Background

The end mill is the most used milling cutter on numerical control machines, and is mainly used for face milling, groove milling, step face milling and profile milling. The cutting tool is commonly used for carrying out combined cutting operation on cutting edges with various specifications on a machine tool, common combined cutters can interfere with each other among different cutters, the front angle is changed greatly along with the diameter, the place with small diameter tends to be a negative front angle, the cutting resistance is high, and the machining efficiency is low.

Disclosure of utility model

The present utility model aims to provide a solid end mill with a combination of blades to solve the above problems.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

The utility model provides a whole end mill of combination sword, includes the handle of a knife and sets up the tool bit at the handle of a knife front end, the tool bit is from front to back including preceding cutting portion, connecting portion and back cutting portion in proper order, the diameter of preceding cutting portion is less than the diameter of back cutting portion, the lateral wall of preceding cutting portion is provided with a plurality of first cutting edges along circumference, the lateral wall of back cutting portion along circumference be provided with a plurality of with the second cutting edge of the quantity looks adaptation of first cutting edge, be formed with the contained angle between the plane at first cutting edge place and the plane at second cutting edge place, and the number of degrees 1/5~4 (360/cutting edge number) of this contained angle.

Preferably, a first chip flute is arranged between two adjacent groups of first cutting edges.

Preferably, a second chip flute is arranged between two adjacent groups of second cutting edges.

Preferably, the first blade and the second blade are both irregularly wavy.

Preferably, the cutter handle and the cutter head are cast and molded by one or more materials selected from high-speed steel, hard alloy, CBN and PCD.

After the technical scheme is adopted, the utility model has the following beneficial effects:

The utility model provides an integral end mill with combined blades, which combines front and rear groups of cutting blades through a connecting part, and forms an included angle between planes of the two types of cutting blades, so that each group of cutting blades has independent rake design, the size of the rake is ensured, when the diameter of the cutting part is too small, the rake tends to be negative, the cutting resistance is reduced, light and rapid free cutting is realized, meanwhile, the frequent tool changing procedure is reduced, and the cutting efficiency is effectively improved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a side view of the present utility model;

fig. 3 is a top view of the present utility model.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Examples

Referring to fig. 1 to 3, the present utility model discloses a combined edge integral end mill, which comprises a shank 1 and a cutter head 2 disposed at the front end of the shank 1, wherein the cutter head 2 sequentially comprises a front cutting portion 21, a connecting portion 22 and a rear cutting portion 23 from front to back, the diameter of the front cutting portion 21 is smaller than that of the rear cutting portion 23, a plurality of first cutting edges 211 are circumferentially disposed on the side wall of the front cutting portion 21, a plurality of second cutting edges 231 adapted to the number of the first cutting edges 211 are circumferentially disposed on the side wall of the rear cutting portion 23, an included angle is formed between the plane of the first cutting edges 211 and the plane of the second cutting edges 231, and the degree of the included angle is 1/5~4 x (360/number of cutting edges).

In this embodiment, the number of the first cutting edge 211 and the second cutting edge 231 is three, and the included angle between the plane of the first cutting edge 211 and the plane of the second cutting edge 231 is 60 degrees, so that the rake angle of the first cutting edge 211 and the rake angle of the second cutting edge 231 are improved, the sharpness of the cutting edges is improved, the cutting resistance is reduced, and the surface quality is high.

A first chip flute 212 is provided between adjacent two sets of first cutting edges 211 for chip removal. A second chip flute 232 is provided between two adjacent sets of second cutting edges 231 for chip removal.

The first blade 211 and the second blade 231 are each irregularly wavy, and their specific shapes are adjusted and designed according to actual cutting.

The knife handle 1 and the knife head 2 are cast and formed by one or more materials of high-speed steel, hard alloy, CBN and PCD.

The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. The combined blade integral end mill is characterized by comprising a cutter handle and a cutter head arranged at the front end of the cutter handle, wherein the cutter head sequentially comprises a front cutting part, a connecting part and a rear cutting part from front to back, the diameter of the front cutting part is smaller than that of the rear cutting part, a plurality of first blades are circumferentially arranged on the side wall of the front cutting part, a plurality of second blades matched with the first blades in number are circumferentially arranged on the side wall of the rear cutting part, an included angle is formed between a plane where the first blades are located and a plane where the second blades are located, and the included angle is 1/5~4/5 (360/blade number).

2. The solid end mill of claim 1 wherein a first flute is disposed between two adjacent sets of said first cutting edges.

3. The solid end mill of claim 1 wherein a second flute is disposed between two adjacent sets of said second cutting edges.

4. The solid end mill of claim 1 wherein the first and second cutting edges are irregularly wavy.

5. The solid end mill of claim 1, wherein the shank and the bit are cast from one or more of high speed steel, cemented carbide, CBN, and PCD.