A type of milling cutter

Abstract

This utility model discloses a milling cutter, including a cutter body with a shaft-like structure; a helical chip removal groove is formed on the outer periphery of the cutter body; the end of the cutter body is provided with a first cutting edge, a second cutting edge, a third cutting edge, a fourth cutting edge, and a fifth cutting edge. The first cutting edge is symmetrically arranged around the axis of the cutter body, the second and third cutting edges are located on both sides of the axis and intersect with the first cutting edge, and the fourth and fifth cutting edges are located on one side of the axis, intersecting with both the fifth and third cutting edges. This utility model achieves one-time forming by setting multiple cutting edges on the cutter, thereby improving machining accuracy and yield. The fourth and fifth cutting edges are set on one side to cut the remaining material in the product, avoiding over-cutting caused by double-sided cutting. The second and third cutting edges are set at unequal angles to ensure the cutting dimensions and avoid over-cutting.

Description

Technical Field

[0001] This utility model relates to the field of cutting tools, and in particular to a milling cutter. Background Technology

[0002] like Figure 1 For the structure of the part, a concave structure needs to be machined at one end of the cylindrical structure to form the first machining surface. The side wall of the concave structure forms the second machining surface, and the end face and the outer side form the third and fourth machining surfaces, respectively. The existing machining process requires two milling cutters to machine the first and second machining surfaces first, and then the third and fourth machining surfaces are machined. However, this requires two positioning operations, which results in a large error. Utility Model Content

[0003] To address the shortcomings of the existing technology, the main objective of this utility model is to overcome these deficiencies by disclosing a milling cutter, comprising a milling cutter body in the form of a shaft; a helical chip removal groove is formed on the outer periphery of the milling cutter body; the end of the milling cutter body is provided with a first cutting edge, a second cutting edge, a third cutting edge, a fourth cutting edge, and a fifth cutting edge, wherein the first cutting edge is symmetrically arranged about the axis of the milling cutter body, the second and third cutting edges are arranged on both sides of the axis and intersect with the first cutting edge, and the fourth and fifth cutting edges are arranged on one side of the axis, with the fourth cutting edge intersecting with the fifth and third cutting edges respectively.

[0004] Furthermore, a fillet R1 is provided at the junction of the third cutting edge and the fourth cutting edge, and R1 is less than 0.1 mm.

[0005] Furthermore, a fillet R2 is provided at the junction of the fifth cutting edge and the fourth cutting edge, and R2 is less than 0.1mm.

[0006] Furthermore, the second cutting edge forms an angle α with the axis, and the third cutting edge forms an angle β with the axis, wherein the angle α is 1° ± 0.5° smaller than the angle β.

[0007] Furthermore, two chip removal grooves are provided.

[0008] The beneficial effects achieved by this utility model are as follows:

[0009] This invention achieves one-time forming by setting multiple cutting edges on the cutting tool, thereby improving machining accuracy and yield. A fourth and fifth cutting edge are set on one side to cut away any remaining material, avoiding over-cutting that can occur with double-sided cutting. The second and third cutting edges are set at unequal angles; the second cutting edge allows for pre-cutting allowance, while the third cutting edge performs precision cutting, ensuring the cutting dimensions and preventing over-cutting. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the product structure of a milling cutter according to the present invention;

[0011] Figure 2 This is a schematic diagram of the structure of a milling cutter according to the present invention;

[0012] Figure 3 for Figure 2 Enlarged view of X in the middle;

[0013] Figure 4 This is a top view of a milling cutter according to the present invention;

[0014] Figure 5 This is a schematic diagram illustrating the interaction between a milling cutter and a product according to this utility model.

[0015] The attached figures are labeled as follows:

[0016] 1. Milling cutter body, 2. Chip removal groove, 3. First cutting edge, 4. Second cutting edge, 5. Third cutting edge, 6. Fourth cutting edge, 7. Fifth cutting edge. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0018] A type of milling cutter, such as Figures 1-5 As shown, the milling cutter includes a milling cutter body 1, which has a shaft-like structure. A helical chip-removing groove 2 is formed on the outer periphery of the milling cutter body 1. The end of the milling cutter body 1 is provided with a first cutting edge 3, a second cutting edge 4, a third cutting edge 5, a fourth cutting edge 6, and a fifth cutting edge 7. The first cutting edge 3 is symmetrically arranged around the axis of the milling cutter body 1, ensuring rotational balance of the tool for turning the first machined surface of the product. The second cutting edge 4 and the third cutting edge 5 are located on opposite sides of the axis and intersect with the first cutting edge 3; the second cutting edge 4 and the third cutting edge 5 are used to turn the second machined surface of the product. The fourth cutting edge 6 and the fifth cutting edge 7 are located on one side of the axis, with the fourth cutting edge 6 intersecting with both the fifth cutting edge 7 and the third cutting edge 5. The fourth cutting edge 6 is used to turn the third machined surface of the product, and the fifth cutting edge 7 is used to turn the fourth machined surface of the product. With this structure, product features can be machined in a single pass.

[0019] In one embodiment, such as Figures 1-5 As shown, a fillet R1 is provided at the junction of the third cutting edge 5 and the fourth cutting edge 6, and R1 is less than 0.1mm.

[0020] In one embodiment, such as Figures 1-5 As shown, a fillet R2 is provided at the junction of the fifth cutting edge 7 and the fourth cutting edge 6, and R2 is less than 0.1mm.

[0021] In one embodiment, such as Figures 1-5 As shown, the second cutting edge 4 forms an angle α with the axis, and the third cutting edge 5 forms an angle β with the axis. Angle α is 1° ± 0.5° smaller than angle β. That is, when the tool rotates at high speed, a slight misalignment between the product and the tool is inevitable, which can cause over-cutting. By using the second and third cutting edges 4 with unequal angles, when cutting the second machined surface of the product with the second cutting edge 4, because angle α is smaller than angle β, more allowance is set. After cutting with the second cutting edge 4, the allowance is removed with the third cutting edge 5. The dimension cut by the third cutting edge 5 is used as the standard, thus ensuring the product's dimensions are accurate.

[0022] In one embodiment, such as Figures 1-5 As shown, two chip removal grooves 2 are provided. Reducing the number of grooves can increase the size of chip removal grooves 2, thus promoting the rapid discharge of iron chips.

[0023] The above are merely preferred embodiments of the present utility model and are not intended to limit the scope of implementation of the present utility model. Any modifications or equivalent substitutions to the present utility model without departing from the spirit and scope thereof should be covered within the protection scope of the claims of the present utility model.

Claims

1. A milling cutter, characterized in that The milling cutter includes a main body in the shape of a shaft; a helical chip removal groove is formed on the outer periphery of the main body; the end of the main body is provided with a first cutting edge, a second cutting edge, a third cutting edge, a fourth cutting edge and a fifth cutting edge, the first cutting edge is symmetrically arranged about the axis of the main body, the second cutting edge and the third cutting edge are arranged on both sides of the axis and intersect with the first cutting edge, the fourth cutting edge and the fifth cutting edge are arranged on one side of the axis, and the fourth cutting edge intersects with the fifth cutting edge and the third cutting edge respectively.

2. A milling cutter according to claim 1, wherein A fillet R1 is provided at the junction of the third cutting edge and the fourth cutting edge, and R1 is less than 0.1 mm.

3. The milling cutter according to claim 1, characterized in that A fillet R2 is provided at the junction of the fifth cutting edge and the fourth cutting edge, and R2 is less than 0.1mm.

4. The milling cutter according to claim 1, wherein The second cutting edge forms an angle α with the axis, and the third cutting edge forms an angle β with the axis. The angle α is 1° ± 0.5° smaller than the angle β.

5. The milling cutter according to claim 1, wherein Two chip removal channels are provided.

Images