CN215880046U

CN215880046U - Cutting tool

Info

Publication number: CN215880046U
Application number: CN202023020496.9U
Authority: CN
Inventors: 白夏楠
Original assignee: Shenzhen Aviation Industry Precision Tools Co ltd
Current assignee: Shenzhen Aviation Industry Precision Tools Co ltd
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2022-02-22
Anticipated expiration: 2030-12-15

Abstract

In order to solve the problems that the strength of a tool nose is low and the surface finish of an end-milled workpiece is low in the prior art, the utility model provides a tool, which comprises a tool bar and an end cutting edge positioned at the end part of the tool; the end cutting edge comprises a first cutting edge and a second cutting edge which are connected; the first cutting edge is positioned on the radial outer side of the cutter, and the second cutting edge is positioned on the radial inner side of the cutter; in the radial direction from the outside to the inside of the cutter, the first cutting edge and the second cutting edge are both inclined to one side of the cutter bar, and the inclination angle of the second cutting edge is larger than that of the first cutting edge. The cutter provided by the utility model has high strength and high surface finish of an end-milled workpiece.

Description

Cutting tool

Technical Field

The utility model relates to a cutter, in particular to an end milling numerical control cutter.

Background

Milling is a cutting process using a rotating tool. In the process, the cutting edge generates a cutting movement by means of its rotation about the central axis of the tool. The feed movement can be generated in various directions. They are produced by a tool or a workpiece, even both. In contrast to turning and drilling, the cutting edges do not always mesh together. After cutting on the workpiece, they return to the point of first cut in a disengaged state. As a result, they can cool down and expel chips from the chip flutes.

The milling cutter of the prior art has been widely used due to its unique cutting properties in the field of metal cutting, such as milling of various surfaces, such as various flats, flanks, shoulders, grooves, and cutting operations. The design of the shape and the angle of cutter teeth of various milling cutters has a key influence on the cutting performance of the milling cutters, and the common cutter teeth of the milling cutters comprise straight teeth, helical teeth and spiral teeth.

However, the existing cutting tool has the problems of low strength of a tool nose and low surface finish of an end-milled workpiece.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems that the strength of a tool nose is low and the surface smoothness of an end-milled workpiece is low in the prior art, and provides a tool.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

providing a tool comprising a tool shank and an end cutting edge at an end of the tool; the end cutting edge comprises a first cutting edge and a second cutting edge which are connected; the first cutting edge is positioned on the radial outer side of the cutter, and the second cutting edge is positioned on the radial inner side of the cutter; in the radial direction from the outside to the inside of the cutter, the first cutting edge and the second cutting edge are both inclined to one side of the cutter bar, and the inclination angle of the second cutting edge is larger than that of the first cutting edge.

The cutter with the structure can increase the strength of a tool nose and the surface smoothness of an end-milled workpiece under the condition of not influencing the cutting capability.

Furthermore, the first cutting edge inclines to one side of the cutter rod and forms an included angle within 0.5 degrees with the radial direction of the cutter.

Furthermore, the second cutting edge inclines towards one side of the cutter rod and forms an included angle of 2.5-3.8 degrees with the radial direction of the cutter.

Further, the length of the first cutting edge is 0.8-1.2 times of the diameter of the cutter.

Further, the first cutting edge and the second cutting edge are both wedge-shaped.

Further, the edge of the end cutting edge is provided with a smoothing edge.

In this case, the strength of the end cutting edge can be improved without affecting the heat dissipation and chip removal performance of the cutting edge of the tool.

Further, the width of the smoothing edge is 0.04-0.06 mm.

Further, the tool includes a plurality of the end cutting edges.

Further, the cutter still includes side cutting edge and the side chip flute that is located the cutter side, side cutting edge and side chip flute all around the axial spiral setting of cutter.

Further, the side surface of the cutter is provided with a plurality of side cutting edges and side chip flutes.

Drawings

FIG. 1 is a front view of a tool provided in a preferred embodiment of the present invention;

FIG. 2 is a perspective view of a tool provided in accordance with a preferred embodiment of the present invention;

FIG. 3 is a schematic end view of a tool provided in accordance with a preferred embodiment of the present invention;

the reference numbers in the drawings of the specification are as follows:

10. a cutter bar; 21. a side cutting edge; 22. a lateral chip pocket; 31. a first cutting edge; 32. a second cutting edge; 33. and (4) smoothing the edge.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

In the description of the present invention, it is to be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Hereinafter, a tool according to a preferred embodiment of the present invention will be described in detail with reference to fig. 1 to 3.

Specifically, as shown in fig. 1 and 2, the tool has a cylindrical shape as a whole, and a cylindrical tool holder 10 at the rear end thereof, and has two end cutting edges at the front end thereof and two side cutting edges 21 at the side surface thereof.

The side cutting edges 21 are helically arranged around the axial direction of the tool. The side of the tool between the two side cutting edges 21 is also provided with two side chip flutes 22, which chip flutes 22 are likewise arranged helically around the axial direction of the tool. The section of the side chip groove 22 is U-shaped, so that chip removal is facilitated.

The two end cutting edges are arranged along the radial direction of the cutter, and the cutting edges of the two end cutting edges are collinear. Each end cutting edge comprises a first cutting edge 31 and a second cutting edge 32 connected; the first cutting edge 31 is located on the outer side in the radial direction of the tool, and the second cutting edge 32 is located on the inner side in the radial direction of the tool; in the radial direction from the outside to the inside of the tool, the first cutting edge 31 and the second cutting edge 32 are both inclined toward the side of the holder 10, and the second cutting edge 32 is inclined at an angle greater than that of the first cutting edge 31. In the present embodiment, the first cutting edge 31 is inclined toward the side of the tool holder 10, and forms an included angle of 0.5 ° with the radial direction of the tool, and the length of the first cutting edge 31 is 0.8-1.2 times the diameter of the tool. The second cutting edge 32 is inclined to the side of the tool holder 10 and forms an angle of 2.5 ° with the radial direction of the tool.

The first cutting edge 31 and the second cutting edge 32 are both wedge-shaped.

To improve the strength of the end cutting edge, the edge of the end cutting edge has a wiper edge 33. Preferably, the wiper edge 33 has a width of 0.04 to 0.06 mm.

Meanwhile, the edge of the end cutting edge is provided with two end chip flutes.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A tool, comprising a tool holder and an end cutting edge at an end of the tool;

the end cutting edge comprises a first cutting edge and a second cutting edge which are connected; the first cutting edge is positioned on the radial outer side of the cutter, and the second cutting edge is positioned on the radial inner side of the cutter;

in the radial direction from the outside to the inside of the cutter, the first cutting edge and the second cutting edge are both inclined to one side of the cutter bar, and the inclination angle of the second cutting edge is larger than that of the first cutting edge.

2. The tool as set forth in claim 1, wherein said first cutting edge is inclined to the side of the shank at an angle of up to 0.5 ° with respect to the radial direction of the tool.

3. The tool as set forth in claim 1, wherein said second cutting edge is inclined toward the side of the tool holder and forms an angle of 2.5 ° to 3.8 ° with the radial direction of the tool.

4. The tool according to claim 1, wherein the length of the first cutting edge is 0.8-1.2 times the diameter of the tool.

5. The tool according to claim 1, wherein the first and second cutting edges are each wedge-shaped.

6. The tool according to claim 1, wherein the end cutting edge has a wiper edge.

7. The tool according to claim 6, wherein the wiper edge has a width of 0.04-0.06 mm.

8. The tool according to claim 1, wherein said tool comprises a plurality of said end cutting edges.

9. The tool according to any one of claims 1-8, wherein the tool further comprises side cutting edges and side chip flutes on the sides of the tool, each of the side cutting edges and side chip flutes being helically arranged around the axial direction of the tool.

10. The tool according to claim 9, wherein said tool side surface is provided with a plurality of said side cutting edges and side chip flutes.