Coating R-angle milling cutter for cutting titanium alloy

Abstract

The utility model discloses a coating R angle milling cutter for cutting titanium alloy, which comprises a cutter head, the cutter head is provided with an end edge and a circumferential edge, the butterfly angle of the end edge is 3 degrees, the first end edge relief angle of the end edge is 7 degrees, the second end edge relief angle of the end edge is 20 degrees, the circumferential edge rake angle of the circumferential edge is 5-7 degrees, and the butterfly angle of the end edge is 3 degrees. The first clearance angle of the circumferential blade is 8-12 degrees, and the second clearance angle of the circumferential blade is 25 degrees. The utility model has the advantages of reduction of chip friction, good supporting strength, prevention of chip accumulation and long service life.

Description

Technical Field

[0001] The utility model relates to an R-angle milling cutter, in particular to a coated R-angle milling cutter for cutting titanium alloy. Background Art

[0002] Titanium alloys are widely used in the fields of electronics manufacturing, aviation industry, biomedicine, etc. due to their high specific strength, good mechanical properties and corrosion resistance. They are ideal manufacturing materials for high-performance parts in the future and have broad scientific research space and application prospects. However, due to their low thermal conductivity, high chemical activity and severe tool wear, they are difficult to process.

[0003] At present, domestic and foreign scholars and enterprises have carried out the research and development of titanium alloy milling tools. The research and development of new tool materials and geometric structures is the key technology of titanium alloy milling tools. The use of high-hardness, high-rigidity tool materials and advanced coating technology can improve the wear resistance and fracture resistance of the tool; optimizing the tool geometry and edge design can reduce the cutting force, reduce the surface roughness of the machined surface, and improve the machining efficiency. However, there are still many unclear points in the understanding of the cutting principle of titanium alloys, as well as the cutting temperature, cutting force and other phenomena during the cutting process. In particular, the research on titanium alloy cutting is not sufficient due to the relatively late start and material costs, which limits the improvement of productivity and machining quality in the machining of titanium alloy parts. At present, the tools used in titanium alloys have high friction, are easy to break, have serious chip accumulation, and have a short service life. Utility Model Content

[0004] In order to solve the defects of the above-mentioned prior art, the utility model provides a coated R-angle milling cutter for cutting titanium alloy. The utility model reduces chip friction, has good support strength, prevents chip accumulation, and has a long service life.

[0005] To achieve the above technical objectives, the utility model adopts the following technical scheme: a coated R-angle milling cutter for cutting titanium alloy, comprising a cutter head, the cutter head being provided with an end blade and a peripheral blade, the butterfly angle of the end blade being 3°, the first end blade clearance angle of the end blade being 7°, the second end blade clearance angle of the end blade being 20°, the peripheral blade rake angle of the peripheral blade being 5°-7°, the first peripheral blade clearance angle of the peripheral blade being 8°-12°, and the second peripheral blade clearance angle of the peripheral blade being 25°.

[0006] The first clearance angle width of the peripheral blade of the peripheral blade is 0.36 mm, and the second clearance angle width of the peripheral blade of the peripheral blade is 0.85 mm.

[0007] The helix angle of the peripheral edge is 40°.

[0008] The tooth gap angles of the peripheral blades are 35° and 45°.

[0009] The end cutting edge and the peripheral cutting edge are coated with a TiAlSiN coating.

[0010] In summary, the utility model has achieved the following technical effects:

[0011] The utility model reduces the circumferential blade rake angle and the circumferential blade clearance angle, thereby reducing the friction between the cutting edge and the workpiece surface and reducing the roughness of the processed surface. At the same time, the wedge angle is larger and the blade portion obtains more support, making the milling cutter easier to resist the hardening phenomenon of the titanium alloy of the workpiece. The double clearance angle design of the end blade reduces the rebound contact of the processed material and extends the service life. The setting of two different tooth gap angles of 35° and 45° can effectively prevent the accumulation and jam of chips while ensuring the strength of the cutting edge. A deeper chip groove is set to obtain a larger chip capacity and chip removal space, thereby reducing the risk of chip accumulation during cutting, further reducing the wear of the tool and suppressing the heat generated during cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a side view of a coated R-angle milling cutter for cutting titanium alloy;

[0013] Figure 2 It is a schematic diagram of the cross section of the Zhou blade;

[0014] Figure 3 is a schematic diagram of the tool end face;

[0015] Figure 4 yes Figure 3 A schematic diagram of one of the tooth gaps;

[0016] Figure 5 yes Figure 3 Another tooth gap diagram in;

[0017] Figure 6 This is a schematic diagram of the end blade angle. DETAILED DESCRIPTION

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0019] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0022] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0024] Example:

[0025] Figure 1 The present invention is a side view of a coated R-angle milling cutter for cutting titanium alloy, comprising a cutter head, wherein the cutter head is provided with an end blade and a peripheral blade, the length of the cutter head is L2=15mm, the total length of the tool is L3=50mm, the length of the peripheral blade is L1=12mm, the helix angle a1 of the peripheral blade is 40°, and the R angle is 0.3°.

[0026] Figure 2 : is a schematic cross-sectional view of a peripheral blade, wherein the peripheral blade rake angle a2= is 5°-7°, the peripheral blade first clearance angle a3= is 8°-12°, and the peripheral blade second clearance angle a4= is 25°. In this embodiment, a2= is 5°, a3=12°. The peripheral blade first clearance angle width is L4=0.36mm, and the peripheral blade second clearance angle width is L5=0.85mm.

[0027] The utility model uses the peripheral edge as the cutting edge, and reduces the peripheral edge rake angle and the first peripheral edge clearance angle. The rake angle is reduced to 5°-7°, and the clearance angle is reduced to 8°-12°, so that the friction between the cutting edge and the workpiece surface is reduced, and the roughness of the processed surface is reduced. At the same time, the wedge angle is larger, and the blade part obtains more support, making it easier for the milling cutter to resist the hardening phenomenon of the titanium alloy of the workpiece. The utility model reduces the rebound contact of the processed material and prolongs the service life through the double clearance angle design of the end edge.

[0028] Figure 3 is a schematic diagram of the tool end face. Figure 4 yes Figure 3 A schematic diagram of one of the tooth gaps, Figure 5 yes Figure 3 Another tooth gap diagram in the utility model shows that the tooth gap angles of the peripheral blade of the utility model are a5=35° and a6=45°. The chip groove increases the chip capacity and acts as a chip removal channel during the cutting process, which helps to smoothly and timely discharge the chips. The utility model can effectively prevent the accumulation and jamming of chips while ensuring the strength of the cutting edge by setting two different tooth gap angles of 35° and 45°. A deeper chip groove is set to obtain a larger chip capacity and chip removal space, reduce the risk of chip accumulation during the cutting process, further reduce the wear of the tool and suppress the heat generated during the cutting process.

[0029] like Figure 5 As shown, the butterfly angle of the end edge is a7 = 3°. Figure 6 It is a schematic diagram of the end edge angle, wherein the first clearance angle of the end edge is a8=7°, the second clearance angle of the end edge is a9=20°, the butterfly angle of 3° and the end clearance angle of 7° can ensure that the tool blade is sharper, and the double end clearance angle design helps the tool avoid the impact of the upper and lower elastic deformation of the workpiece during processing; one blade cuts off the chips periodically through the center tooth gap to reduce chip accumulation.

[0030] The end cutting edge and the peripheral cutting edge are coated with a TiAlSiN coating, which has high hardness, low friction coefficient, good wear resistance, and strong heat insulation ability, and can enhance tool performance and extend tool life.

[0031] The above description is only a preferred implementation mode of the present invention, and does not limit the present invention in any form. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A coated R-angle milling cutter for cutting titanium alloy, characterized in that: The invention comprises a cutter head, wherein the cutter head is provided with an end blade and a peripheral blade, the butterfly angle of the end blade is 3°, the first clearance angle of the end blade of the end blade is 7°, the second clearance angle of the end blade of the end blade is 20°, the front angle of the peripheral blade of the peripheral blade is 5°-7°, the first clearance angle of the peripheral blade of the peripheral blade is 8°-12°, and the second clearance angle of the peripheral blade of the peripheral blade is 25°.

2. A coated R-angle milling cutter for cutting titanium alloy according to claim 1, characterized in that: The first clearance angle width of the peripheral blade of the peripheral blade is 0.36 mm, and the second clearance angle width of the peripheral blade of the peripheral blade is 0.85 mm.

3. The coated R-angle milling cutter for cutting titanium alloy according to claim 1, characterized in that: The helix angle of the peripheral edge is 40°.

4. The coated R-angle milling cutter for cutting titanium alloy according to claim 1, characterized in that: The tooth gap angles of the peripheral blades are 35° and 45°.

5. The coated R-angle milling cutter for cutting titanium alloy according to claim 1, characterized in that: The end cutting edge and the peripheral cutting edge are coated with a TiAlSiN coating.

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