Double-sided six-blade square shoulder milling insert

Abstract

The utility model discloses a double -faced six blade square shoulder milling cutter piece, including top surface, bottom surface, three side installation surfaces, three side installation surfaces connect top surface and bottom surface, and top surface and bottom surface all are provided with three sets of cutting edges, and cutting edges are arranged at the junction of side installation surface and top surface or bottom surface, and each group cutting edges includes main cutting edge and finishing edge, and finishing edge rear flank is arranged to the junction of finishing edge and side installation surface, and finishing edge rear flank includes finishing edge first rear flank and finishing edge second rear flank, and finishing edge first rear flank connects finishing edge with finishing edge second rear flank, and finishing edge second rear flank is connected with side installation surface, and finishing edge second rear flank is arc -shaped, the utility model discloses the design of finishing edge rear flank is arc curved surface to realize the avoidance design, has solved the problem that the avoidance space is too big caused by the inclination of plane design to the middle, thereby has improved the structural strength of blade, has reduced the vibration and wear and tear when heavy cutting.

Description

Technical Field

[0001] This utility model relates to a milling insert, and more specifically, to a double-sided six-flute square shoulder milling insert. Background Technology

[0002] In the field of machining, the clearance design of cutting tools is a crucial element in ensuring the realization of cutting functions. Clearance (i.e., the space between the tool side or flank face and the workpiece) aims to prevent interference between the non-cutting parts of the tool and the machined surface, thereby ensuring machining accuracy and reducing frictional losses. However, existing tool designs commonly suffer from excessive clearance depth and complex geometry, leading to a significant reduction in tool structural strength and becoming a technical bottleneck restricting tool life and machining stability.

[0003] Invention application CN114144275A discloses an indexable cutting insert, such as Figure 3 As shown, the clearance design of this insert is such that each of the secondary clearance surfaces 18 is inclined from the corresponding secondary cutting edge on its extension toward the central plane, making the cutting insert positive in terms of the secondary cutting edge. This clearance design results in its side surface being designed as multiple intersecting planes. The clearance space formed by the planes inclining toward the center of the insert is too large, which leads to a reduction in the structural strength of the insert. During heavy cutting, the insert is prone to vibration, which reduces the surface quality of the workpiece and also accelerates the wear of the insert, reducing the service life of the insert. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a double-sided six-flute square shoulder milling insert.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A double-sided six-flute square shoulder end mill includes a top surface, a bottom surface, and three side mounting surfaces. The three side mounting surfaces connect the top surface and the bottom surface. Each top surface and bottom surface is provided with three sets of cutting edges. The cutting edges are located at the connection between the side mounting surface and the top or bottom surface. Each set of cutting edges includes a main cutting edge and a finishing edge. The finishing edge protrudes upward, and the main cutting edge is inclined upward and connected to the finishing edge. A finishing edge flank face is provided at the connection between the finishing edge and the side mounting surface. The finishing edge flank face includes a first finishing edge flank face and a second finishing edge flank face. The first finishing edge flank face connects the finishing edge and the second finishing edge flank face. The second finishing edge flank face is connected to the side mounting surface and is arc-shaped.

[0007] Furthermore, the radius of the arc of the second rear face of the finishing blade is set to 3-16 mm.

[0008] Furthermore, the second rear face of the finishing blade is connected to the side mounting surface via a transition arc surface on the side mounting surface.

[0009] Furthermore, the top and bottom surfaces share a common axis of rotational symmetry with a rotation angle of 180°.

[0010] Furthermore, the cutting edges on the top or bottom surface are evenly arranged at 120° intervals from each other.

[0011] Furthermore, the top or bottom surface is provided with markings to distinguish the cutting edge.

[0012] Furthermore, a friction-reducing groove is provided at the connection between the main cutting edge and the top surface.

[0013] Furthermore, the friction-reducing grooves are arranged in an array along the length of the main cutting edge.

[0014] Furthermore, the top surface has mounting holes extending from the blade to the bottom surface.

[0015] Furthermore, the outer surface of the double-sided six-flute square shoulder milling cutter is coated with a wear-resistant coating.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This invention achieves clearance design by designing the blade face after finishing with an arc-shaped surface, which solves the problem of excessive clearance space caused by the need for a planar design to tilt towards the center. This improves the structural strength of the blade and reduces vibration and wear during heavy cutting. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the double-sided six-flute square shoulder milling cutter structure in Example 1;

[0019] Figure 2 This is a schematic diagram of the double-sided six-flute square shoulder milling cutter structure in Example 2;

[0020] Figure 3 A schematic diagram of the air-shielding design structure for CN114144275A;

[0021] Among them: 1. Top surface; 2. Side mounting surface; 3. Main cutting edge; 4. Finishing edge; 5. First flank face of finishing edge; 6. Second flank face of finishing edge; 7. Anti-friction groove; 8. Mounting hole; 9. Transition arc surface of side mounting surface; 18. Secondary clearance surface. Detailed Implementation

[0022] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application; however, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below. Furthermore, it should be understood in the description of this application that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified. In this application, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In this application, unless otherwise explicitly specified and limited, "on" or "below" a second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0023] Example 1

[0024] Please see Figures 1 to 3 One embodiment provided by this utility model:

[0025] This utility model provides a double-sided six-flute square shoulder end mill insert, including a top surface 1, a bottom surface, and three side mounting surfaces 2. The three side mounting surfaces 2 connect the top surface 1 and the bottom surface. The top surface 1 and the bottom surface have a common axis of rotational symmetry with a rotation angle of 180°. The top surface 1 and the bottom surface are each provided with three sets of cutting edges, which are evenly arranged at 120° intervals. The cutting edges are located at the connection between the side mounting surfaces 2 and the top surface 1 or the bottom surface. Each set of cutting edges includes a main cutting edge 3 and a finishing edge 4. The finishing edge 4 protrudes upward, and the main cutting edge 3 is inclined upward to connect with the finishing edge 4. A finishing edge flank is provided at the connection between the finishing edge 4 and the side mounting surface 2. The finishing edge flank includes a first finishing edge flank 5 and a second finishing edge flank 6. The first finishing edge flank 5 connects the finishing edge 4 and the second finishing edge flank 6. The second finishing edge flank 6 is connected to the side mounting surface 2 and is arc-shaped.

[0026] The arc value of the second rear cutting face 6 of the finishing blade increases accordingly with the increase of the blade size, and its range is 3 to 16 mm.

[0027] The top surface 1 and the bottom surface are provided with markings to distinguish the cutting edge, so that operators can quickly identify the cutting edge.

[0028] The top surface 1 has a mounting hole 8 that extends from the blade to the bottom surface. The blade is fixed inside the blade holder by screws that engage with the mounting hole 8.

[0029] The outer surface of the double-sided six-flute square shoulder end mill is coated with a wear-resistant coating, which enhances the wear resistance and high-temperature resistance of the end mill through PVD or CVD coating.

[0030] This embodiment achieves clearance design by designing the tool face after finishing the cutting edge as an arc surface, which solves the problem of excessive clearance space caused by the need for the planar design to tilt towards the middle, thereby improving the structural strength of the tool and reducing vibration and wear during heavy cutting.

[0031] Example 2

[0032] Please see Figures 1 to 3 The present invention provides an embodiment that differs from Embodiment 1 in that the design of the back face of the blade in this embodiment is different from that in Embodiment 1.

[0033] This utility model provides a double-sided six-flute square shoulder end mill insert, including a top surface 1, a bottom surface, and three side mounting surfaces 2. The three side mounting surfaces 2 connect the top surface 1 and the bottom surface. The top surface 1 and the bottom surface have a common axis of rotational symmetry with a rotation angle of 180°. The top surface 1 and the bottom surface are each provided with three sets of cutting edges, which are evenly arranged at 120° intervals. The cutting edges are located at the connection between the side mounting surfaces 2 and the top surface 1 or the bottom surface. Each set of cutting edges includes a main cutting edge 3 and a finishing edge 4. The finishing edge 4 protrudes upward, and the main cutting edge 3 is inclined upward to connect with the finishing edge 4. A finishing edge flank is provided at the connection between the finishing edge 4 and the side mounting surface 2. The finishing edge flank includes a first finishing edge flank 5 and a second finishing edge flank 6. The first finishing edge flank 5 connects the finishing edge 4 and the second finishing edge flank 6. The second finishing edge flank 6 is connected to the side mounting surface 2 and is arc-shaped.

[0034] The arc value of the second rear cutting face 6 of the finishing blade increases accordingly with the increase of the blade size, and its range is 3 to 16 mm.

[0035] Furthermore, the second rear cutting face 6 of the finishing blade is connected to the side mounting surface 2 through the transition arc surface 9 of the side mounting surface. The arc surface 9 of the side mounting surface and the arc surface of the second rear cutting face 6 of the finishing blade are not concentric. The arc surfaces with different sphere centers can disperse the structural stress and further improve the stability of the tool.

[0036] The top surface 1 and the bottom surface are provided with markings to distinguish the cutting edge, so that operators can quickly identify the cutting edge.

[0037] The top surface 1 has a mounting hole 8 that extends from the blade to the bottom surface. The blade is fixed inside the blade holder by screws that engage with the mounting hole 8.

[0038] The outer surface of the double-sided six-flute square shoulder end mill is coated with a wear-resistant coating, which enhances the wear resistance and high-temperature resistance of the end mill through PVD or CVD coating.

[0039] This embodiment achieves clearance design by designing the back face of the finishing blade as a curved surface, and connects the second back face 6 of the finishing blade to the side mounting surface 2 through the transition arc surface 9 of the side mounting surface. This reduces the problem of excessive clearance space caused by the need for the planar design to tilt towards the middle, further disperses structural stress, thereby improving the structural strength of the blade and reducing vibration and wear during heavy cutting.

[0040] Example 3

[0041] Please see Figures 1 to 3 One embodiment provided by this utility model:

[0042] This utility model provides a double-sided six-flute square shoulder end mill insert, including a top surface 1, a bottom surface, and three side mounting surfaces 2. The three side mounting surfaces 2 connect the top surface 1 and the bottom surface. The top surface 1 and the bottom surface have a common axis of rotational symmetry with a rotation angle of 180°. The top surface 1 and the bottom surface are each provided with three sets of cutting edges, which are evenly arranged at 120° intervals. The cutting edges are located at the connection between the side mounting surfaces 2 and the top surface 1 or the bottom surface. Each set of cutting edges includes a main cutting edge 3 and a finishing edge 4. The finishing edge 4 protrudes upward, and the main cutting edge 3 is inclined upward to connect with the finishing edge 4. A finishing edge flank is provided at the connection between the finishing edge 4 and the side mounting surface 2. The finishing edge flank includes a first finishing edge flank 5 and a second finishing edge flank 6. The first finishing edge flank 5 connects the finishing edge 4 and the second finishing edge flank 6. The second finishing edge flank 6 is connected to the side mounting surface 2 and is arc-shaped.

[0043] The arc value of the second rear cutting face 6 of the finishing blade increases accordingly with the increase of the blade size, and its range is 3 to 16 mm.

[0044] The top surface 1 and the bottom surface are provided with markings to distinguish the cutting edge, so that operators can quickly identify the cutting edge.

[0045] The top surface 1 has a mounting hole 8 that extends from the blade to the bottom surface. The blade is fixed inside the blade holder by screws that engage with the mounting hole 8.

[0046] Furthermore, a friction-reducing groove 7 is provided at the connection between the main cutting edge and the top surface. The friction-reducing groove 7 is arranged in an array along the length direction of the main cutting edge 3. The friction-reducing groove 7 can reduce friction and heat accumulation, thereby improving the tool life.

[0047] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A double-sided six-flute square shoulder end mill, characterized in that, It includes a top surface, a bottom surface, and three side mounting surfaces. The three side mounting surfaces connect the top surface and the bottom surface. Each top surface and bottom surface is provided with three sets of cutting edges. The cutting edges are located at the connection between the side mounting surface and the top or bottom surface. Each set of cutting edges includes a main cutting edge and a finishing edge. The finishing edge protrudes upward. The main cutting edge is inclined upward and connected to the finishing edge. A finishing edge flank is provided at the connection between the finishing edge and the side mounting surface. The finishing edge flank includes a first finishing edge flank and a second finishing edge flank. The first finishing edge flank connects the finishing edge and the second finishing edge flank. The second finishing edge flank is connected to the side mounting surface and is arc-shaped.

2. The double-sided six-flute square shoulder end mill according to claim 1, characterized in that, The radius of the arc on the second back face of the finishing blade is set to 3~16mm.

3. A double-sided six-flute square shoulder end mill according to claim 1, characterized in that, The second rear face of the finishing blade is connected to the side mounting surface through a transition arc surface on the side mounting surface.

4. A double-sided six-flute square shoulder end mill according to claim 1, characterized in that, The top and bottom surfaces share a common axis of rotational symmetry with a rotation angle of 180°.

5. A double-sided six-flute square shoulder end mill according to claim 1, characterized in that, The cutting edges on the top or bottom surface are evenly spaced 120° apart.

6. A double-sided six-flute square shoulder milling cutter according to claim 1, characterized in that, The top or bottom surface is provided with markings to distinguish the cutting edge.

7. A double-sided six-flute square shoulder end mill according to claim 1, characterized in that, A friction-reducing groove is provided at the connection between the main cutting edge and the top surface.

8. A double-sided six-flute square shoulder milling cutter according to claim 7, characterized in that, The anti-friction grooves are arranged in an array along the length of the main cutting edge.

9. A double-sided six-flute square shoulder end mill according to claim 1, characterized in that, The top surface has mounting holes that extend from the blade to the bottom surface.

10. A double-sided six-flute square shoulder end mill according to claim 1, characterized in that, The outer surface of the double-sided six-flute square shoulder end mill is coated with a wear-resistant coating.

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