Four-edge end mill

Abstract

The utility model discloses a four-edge end mill which comprises a four-edge end mill body, the end edge structure of the four-edge end mill body is a single long tooth structure, long teeth directly pass through the circle center of the four-edge end mill body, and the included angle between each long tooth and adjacent short teeth is designed to be smaller than 90 degrees. The problems that the center part of an existing cutter is prone to tipping, and long teeth can be accelerated to fail are solved.

Description

Technical Field

[0001] The utility model relates to the field of machining tools, in particular to a four-edge end milling cutter. Background Art

[0002] End mills are divided into single-edge, two-edge, three-edge, four-edge, five-edge, six-edge and other multi-edge milling cutters according to the number of edges. However, in terms of versatility and usage, the four-edge end mill is the most common and most in demand.

[0003] In order to enable the milling cutter to achieve multiple processing capabilities such as end milling, side milling, grooving, countersinking, etc., the existing four-edge milling cutter end blade structure mostly adopts a double-long tooth structure, and the tooth angle between the long tooth and the adjacent tooth is greater than or equal to 90°. In order to achieve long teeth in this structure, a technical solution of eccentric cutting edge is required. This solution can realize the long teeth of the tool passing through the center, and make the central part of the tool end face have a cutting edge, realizing the function of drilling and milling, and the tool is more versatile. However, the defects of this structure are also obvious, including the following points: First, in the center part of the tool, there is no cutting edge within the offset range. During the processing of the milling cutter end blade, it is easy to cause extrusion due to the lack of cutting edge, causing the center part of the tool to break and fail; Second, the tooth angle between the long teeth is ≥90°. When the tool is involved in cutting, the cutting allowance of the long teeth and the remaining teeth is greater than or equal to that of other teeth. When the end blade is cutting, the cutting force received by the long teeth will be greater than that of other teeth, accelerating the failure of the long teeth. Utility Model Content

[0004] The purpose of the utility model is to provide a four-edge end milling cutter to solve the problems that the center part of the existing cutter is prone to chipping and the long teeth will accelerate the failure.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A four-flute end mill includes a four-flute end mill body. The end edge structure of the four-flute end mill body is a single long tooth structure. The long tooth directly passes through the center of the four-flute end mill body. The angle between the long tooth and the adjacent short tooth is designed to be less than 90°.

[0007] In this solution, a single long tooth structural design is adopted, which allows the long tooth to pass directly through the center of the tool without the need to use the front cutting edge to pass through the center. In this way, the cutting edge at the center of the tool and near the center are involved in cutting, thereby reducing the extrusion force during cutting of the center cutting edge, improving the surface finish of the part while improving the tool performance and extending the tool life. In addition, the angle between the long tooth and the adjacent short tooth is designed to be less than 90°. The structural design allows the long tooth to bear a smaller cutting allowance than the short tooth when the tool rotates one circle, thereby greatly reducing the cutting force on the long tooth and reducing the possibility of tool vibration, thereby achieving the purpose of improving tool performance.

[0008] As a further preferred embodiment of the present invention, the angle at which the long teeth cut the tooth grooves is maintained between 5° and 20° with respect to the rake surface of the short teeth.

[0009] The angle of the long tooth cutting groove is kept between 5° and 20° with the short tooth rake face. Such a design can effectively improve the strength of the cutting tip of the long tooth cutting part, avoiding the possibility of the tool being too sharp and failing prematurely.

[0010] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0011] 1. In this scheme, a single long tooth structural design is adopted, which allows the long tooth to pass through the center of the tool directly without the need to use the rake face to pass through the center. In this way, the cutting edge at the center of the tool and near the center are involved in cutting, thereby reducing the extrusion force during cutting of the center cutting edge, improving the surface finish of the part while improving the tool performance and extending the tool life. In addition, the angle between the long tooth and the adjacent short tooth is designed to be less than 90°. The structural design allows the long tooth to bear a smaller cutting allowance than the short tooth when the tool rotates one circle, thereby greatly reducing the cutting force on the long tooth, reducing the possibility of tool vibration, and achieving the purpose of improving tool performance.

[0012] 2. The angle of the long tooth cutting groove is kept between 5° and 20° with the short tooth rake face. Such a design can effectively improve the strength of the blade tip at the long tooth cutting point, avoiding the possibility of the tool being too sharp and failing prematurely. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a diagram of the end cutting edge of the four-edge end mill body of the utility model. DETAILED DESCRIPTION

[0014] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0015] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0016] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0017] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0018] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is typically placed when in use, or are the orientations or positional relationships commonly understood by those skilled in the art. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0019] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances. Specific embodiment 1:

[0021] Figure 1 A four-edge end mill is shown, including a four-edge end mill body. The end edge structure of the four-edge end mill body is a single long tooth structure, the long tooth directly passes through the center of the four-edge end mill body, and the angle between the long tooth and the adjacent short tooth is designed to be less than 90°.

[0022] In this solution, a single long tooth structural design is adopted, which allows the long tooth to pass directly through the center of the tool without the need to use the front cutting edge to pass through the center. In this way, the cutting edge at the center of the tool and near the center are involved in cutting, thereby reducing the extrusion force during cutting of the center cutting edge, improving the surface finish of the part while improving the tool performance and extending the tool life. In addition, the angle between the long tooth and the adjacent short tooth is designed to be less than 90°. The structural design allows the long tooth to bear a smaller cutting allowance than the short tooth when the tool rotates one circle, thereby greatly reducing the cutting force on the long tooth and reducing the possibility of tool vibration, thereby achieving the purpose of improving tool performance. Specific embodiment 2:

[0024] This embodiment further illustrates the cutting tooth groove of the long teeth based on the specific embodiment 1. The angle of the cutting tooth groove of the long teeth is maintained between 5° and 20° with respect to the rake surface of the short teeth.

[0025] The angle of the long tooth cutting groove is kept between 5° and 20° with the short tooth rake face. Such a design can effectively improve the strength of the cutting tip of the long tooth cutting part, avoiding the possibility of the tool being too sharp and failing prematurely.

[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A four-flute end mill, comprising a four-flute end mill body, characterized in that: The end edge structure of the four-edge end mill body is a single long tooth structure, the long tooth directly passes through the center of the four-edge end mill body, and the angle between the long tooth and the adjacent short tooth is designed to be less than 90°.

2. The four-flute end mill according to claim 1, characterized in that: The angle at which the long teeth cut off the tooth grooves is maintained between 5° and 20° with respect to the rake face of the short teeth.

Images