A fast feed milling cutter blade and milling cutter

Abstract

The application discloses a fast-feed milling blade and a cutter, which comprises a blade body in the shape of a cuboid, the blade body is provided with a screw mounting positioning hole, the blade body is surrounded by a bottom surface, a top surface and side surfaces, the side surfaces are provided with a side mounting surface one in the long side direction of the blade body and a side mounting surface two in the short side direction of the blade body, the side mounting surface one is connected with the top surface to form a side milling cutting edge, the side mounting surface two is connected with the top surface to form an end milling cutting edge, the end milling cutting edge comprises a tool tip circular arc, the side cutting edge is linear, the side cutting edge is tangentially connected with one end of the tool tip circular arc, when the side mounting surface one and the side mounting surface two are matched with the mounting seat of a tool bar, the side milling cutting edge is parallel to the tool bar axis, and the side cutting edge is on the same cylindrical surface; each group of the blade comprises the end milling cutting edge with the fast-feed end surface milling function and the side milling cutting edge with the vertical surface side milling function, so that the blade has the fast-feed end surface milling function and the vertical surface side milling function simultaneously.

Description

Technical Field

[0001] This utility model belongs to the field of metal cutting technology, and more specifically, relates to a rapid feed milling insert and milling cutter. Background Technology

[0002] When machining vertical square shoulders, traditional end mills often have poor square shoulder perpendicularity and surface quality because the main cutting edge is located on the end face, and the side edges are usually not involved in the main cutting or are designed to be weak. This can lead to additional finishing steps. However, in the machining of complex workpieces, side milling and end milling are often performed alternately, which requires frequent replacement of dedicated side milling inserts and end milling inserts, or even replacement of the entire cutter head or tool. This results in low machining efficiency. Therefore, developing milling inserts that can perform both side milling and end milling is an important trend in tool technology development.

[0003] Invention application CN201710773563.8 discloses an indexable insert for high-feed milling, including a top surface and a lower surface, with a side surface and an end surface disposed between the top and lower surfaces, the side surface and the end surface being connected by a plane and or a circular arc surface; the cutting edge of the indexable insert consists of a radial cutting edge and an axial cutting edge; the radial cutting edge is formed by the intersection of the top surface and the end surface, including a main cutting edge, a secondary cutting edge and a first transition edge; the axial cutting edge is formed by the intersection of the top surface and the side surface; the main cutting edge and the axial cutting edge are connected by a circular arc-shaped second transition edge. In this application, the main cutting edge and the axial cutting edge are connected by a second transition edge, which is an arc design, and cannot meet the perpendicularity requirements for side milling when performing side milling. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a rapid feed milling insert and milling cutter, which enables the tool to mill vertical side surfaces in addition to the original rapid feed end face milling function.

[0005] The technical solution of this utility model is: A rapid feed milling insert includes a rectangular insert body with screw mounting holes. The insert body is formed by a bottom surface, a top surface, and a side surface. The side surface has a first side mounting surface along the long side of the insert body and a second side mounting surface along the short side of the insert body. The connection between the first side mounting surface and the top surface forms a side milling cutting edge, and the connection between the second side mounting surface and the top surface forms an end milling cutting edge. The end milling cutting edge includes a tip arc, and the side cutting edge is straight. The side cutting edge is tangentially connected to one end of the tip arc. When the first and second side mounting surfaces are fitted with the mounting base of the tool holder, the side milling cutting edge is parallel to the axis of the tool holder, and the side cutting edges are on the same cylindrical surface.

[0006] Furthermore, the principal cutting edge angle of the side cutting edge is 89.5°~90.5°.

[0007] Furthermore, the blade body has a centrally symmetrical structure.

[0008] Furthermore, the side milling cutting edge and the end milling cutting edge are provided with cutting edge bands.

[0009] Furthermore, the end milling cutting edge also includes a main cutting edge and a secondary cutting edge; one end of the main cutting edge is connected to the tool tip arc, and the other end is connected to the secondary cutting edge, which is inclined.

[0010] Furthermore, a transition edge is provided between the main cutting edge and the secondary cutting edge, and the transition edge is set in an arc shape.

[0011] Furthermore, the radius (R) of the blade tip arc is 0.4mm to 2mm.

[0012] Furthermore, the top surface is provided with a chip removal groove.

[0013] Furthermore, the blade is made of cemented carbide and has a wear-resistant coating on its surface.

[0014] This utility model also provides a milling cutter, including the above-mentioned rapid feed milling insert and a cutter shank. The cutter shank is provided with multiple mounting seats, and the mounting seats are also provided with threaded holes. After the rapid feed milling insert is assembled into the mounting seat, it is fixed by screwing it into the threaded holes.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a rapid feed milling insert and a milling cutter. The milling insert is provided with a side milling cutting edge and a face milling edge. The face milling cutting edge includes a tip arc, and the side milling edge is straight. The side milling edge is tangentially connected to one end of the tip arc. When the first side mounting surface and the second side mounting surface are engaged with the mounting base of the tool holder, the side milling cutting edge is parallel to the axis of the tool holder and the side milling edge is on the same cylindrical surface, so that the milling cutter can simultaneously perform rapid feed face milling and vertical face milling functions. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a fast-feed milling cutter structure; Figure 2 A top view of a fast-feed milling cutter; Figure 3 A top view of a fast-feed milling cutter; Figure 4 Left view of a fast-feed milling cutter; Figure 5 A front view of a fast-feed milling cutter; Among them: 1. Top surface; 2. Side mounting surface one; 3. Side mounting surface two; 4. Side milling cutting edge; 5. End milling cutting edge; 51. Tool tip arc; 52. Main cutting edge; 53. Secondary cutting edge; 54. Transition edge; 6. Screw mounting positioning hole; 7. Chip removal groove; 8. Bottom surface; 9. Cutting edge. Detailed Implementation

[0017] To clearly illustrate the technical features of this utility model, the following detailed description, in conjunction with the accompanying drawings, provides a comprehensive overview of the present utility model. Many specific details are set forth in the following description to facilitate a thorough understanding of the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present utility model is not limited to the specific embodiments disclosed below. Furthermore, it should be understood 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 used only for the convenience of describing the present utility model and simplifying the description. They 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, and therefore should not be construed as a limitation of the present utility model. 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. Therefore, features defined as "first" and "second" can explicitly or implicitly include one or more of those features. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified. In this utility model, unless otherwise explicitly specified and limited, terms such as "installed," "connected," "joined," and "fixed" 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 connection 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 utility model according to the specific circumstances. In this utility model, unless otherwise explicitly specified and limited, "on" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is 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 a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. 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 any suitable manner in one or more embodiments or examples.

[0018] Example 1 like Figures 1 to 5As shown, this embodiment provides a rapid feed milling insert, including a rectangular insert body with screw mounting holes 6. The insert body is formed by a bottom surface 8, a top surface 1, and a side surface. The side surface has a side mounting surface 2 on the long side of the insert body and a side mounting surface 3 on the short side. The connection between the side mounting surface 2 and the top surface 1 forms a side milling cutting edge 4, and the connection between the side mounting surface 3 and the top surface 1 forms an end milling cutting edge 5. The end milling cutting edge 5 includes a tip arc 51. The side cutting edge 4 is straight and tangentially connected to one end of the tip arc 51. When the side mounting surface 2 and the side mounting surface 3 are fitted with the mounting base of the tool holder, the side milling cutting edge 4 is parallel to the axis of the tool holder and is on the same cylindrical surface. The principal cutting edge angle of the side cutting edge 4 is 89.5°. The structure of the side milling cutting edge 4 and the end milling cutting edge 5 allows the insert to simultaneously perform rapid feed end milling and vertical side milling functions.

[0019] In this embodiment, the blade body has a centrally symmetrical structure with two sets of side milling cutting edges and end milling cutting edges. When one set of cutting edges wears out, it can be replaced by the other set of cutting edges for machining operations, thereby improving the overall life of the tool.

[0020] The side milling cutting edge 4 and the end milling cutting edge 5 are provided with a cutting edge band 9. The cutting edge band 9 improves the impact resistance of the tool and can effectively prevent chipping during high-speed cutting.

[0021] The end milling cutting edge 5 also includes a main cutting edge 52 and a secondary cutting edge 53. One end of the main cutting edge 52 is connected to the tip arc 51, and the radius (R) of the tip arc 51 is 0.4~2mm. A smaller radius can reduce radial cutting force, reduce vibration and improve surface quality, while a larger radius can improve impact resistance. The other end of the main cutting edge 52 is connected to the secondary cutting edge 53. The secondary cutting edge 53 is inclined so that it is lower than the main cutting edge 52, ensuring that only the main cutting edge 52 participates in effective cutting. The secondary cutting edge 53 plays a role in avoiding airflow and reducing frictional heat and surface damage.

[0022] The blade is made of cemented carbide and coated with a wear-resistant coating. The substrate provides basic strength and toughness and bears mechanical loads; the coating enhances surface function and solves wear and thermal failure problems. The combination of the two greatly improves the performance of the blade.

[0023] This utility model also provides a milling cutter, including the above-mentioned rapid feed milling insert and a cutter bar. The cutter bar is provided with multiple mounting seats, and the mounting seats are also provided with threaded holes. After the rapid feed milling insert is assembled into the mounting seat, it is fixed by screws locked into the threaded holes. Other structural designs of the cutter bar are conventional technical means and will not be described in detail here.

[0024] Example 2 like Figures 1 to 5As shown, this embodiment provides a rapid feed milling insert, including a rectangular insert body with screw mounting holes 6. The insert body is formed by a bottom surface 8, a top surface 1, and a side surface. The side surface has a side mounting surface 2 on the long side of the insert body and a side mounting surface 3 on the short side. The connection between the side mounting surface 2 and the top surface 1 forms a side milling cutting edge 4, and the connection between the side mounting surface 3 and the top surface 1 forms an end milling cutting edge 5. The end milling cutting edge 5 includes a tip arc 51. The side cutting edge 4 is straight and tangentially connected to one end of the tip arc 51. When the side mounting surface 2 and the side mounting surface 3 are fitted with the mounting base of the tool holder, the side milling cutting edge 4 is parallel to the axis of the tool holder and is on the same cylindrical surface. The principal cutting edge angle of the side cutting edge 4 is 89.5°. The structure of the side milling cutting edge 4 and the end milling cutting edge 5 allows the insert to simultaneously perform rapid feed end milling and vertical side milling functions.

[0025] In this embodiment, the blade body has a centrally symmetrical structure with two sets of side milling cutting edges and end milling cutting edges. When one set of cutting edges wears out, it can be replaced by the other set of cutting edges for machining operations, thereby improving the overall life of the tool.

[0026] The side milling cutting edge 4 and the end milling cutting edge 5 are provided with a cutting edge band 9. The cutting edge band 9 improves the impact resistance of the tool and can effectively prevent chipping during high-speed cutting.

[0027] The end milling cutting edge 5 also includes a main cutting edge 52 and a secondary cutting edge 53. One end of the main cutting edge 52 is connected to the tip arc 51, and the radius (R) of the tip arc 51 is 0.4~2mm. A smaller radius can reduce radial cutting force, reduce vibration and improve surface quality, while a larger radius can improve impact resistance. The other end of the main cutting edge 52 is connected to the secondary cutting edge 53. The secondary cutting edge 53 is inclined so that it is lower than the main cutting edge 52, ensuring that only the main cutting edge 52 participates in effective cutting. The secondary cutting edge 53 plays a role in avoiding airflow and reducing frictional heat and surface damage.

[0028] Furthermore, a transition edge 54 is provided between the main cutting edge 52 and the secondary cutting edge 53. The transition edge is arc-shaped and can perform secondary finishing on the surface after the main cutting edge is processed, thereby improving the surface finish of the workpiece.

[0029] The blade is made of cemented carbide and coated with a wear-resistant coating. The substrate provides basic strength and toughness and bears mechanical loads; the coating enhances surface function and solves wear and thermal failure problems. The combination of the two greatly improves the performance of the blade.

[0030] This utility model also provides a milling cutter, including the above-mentioned rapid feed milling insert and a cutter shank. The cutter shank is provided with multiple mounting seats, and the mounting seats are also provided with threaded holes. After the rapid feed milling insert is assembled into the mounting seat, it is fixed by screwing it into the threaded holes.

[0031] Example 3 like Figures 1 to 5 As shown, this embodiment provides a rapid feed milling insert, including a rectangular insert body with screw mounting holes 6. The insert body is formed by a bottom surface 8, a top surface 1, and a side surface. The side surface has a side mounting surface 2 on the long side of the insert body and a side mounting surface 3 on the short side. The connection between the side mounting surface 2 and the top surface 1 forms a side milling cutting edge 4, and the connection between the side mounting surface 3 and the top surface 1 forms an end milling cutting edge 5. The end milling cutting edge 5 includes a tip arc 51. The side cutting edge 4 is straight and tangentially connected to one end of the tip arc 51. When the side mounting surface 2 and the side mounting surface 3 are fitted with the mounting base of the tool holder, the side milling cutting edge 4 is parallel to the axis of the tool holder and is on the same cylindrical surface. The principal cutting edge angle of the side cutting edge 4 is 89.5°. The structure of the side milling cutting edge 4 and the end milling cutting edge 5 allows the insert to simultaneously perform rapid feed end milling and vertical side milling functions.

[0032] In this embodiment, the blade body has a centrally symmetrical structure with two sets of side milling cutting edges and end milling cutting edges. When one set of cutting edges wears out, it can be replaced by the other set of cutting edges for machining operations, thereby improving the overall life of the tool.

[0033] The side milling cutting edge 4 and the end milling cutting edge 5 are provided with a cutting edge band 9. The cutting edge band 9 improves the impact resistance of the tool and can effectively prevent chipping during high-speed cutting.

[0034] The end milling cutting edge 5 also includes a main cutting edge 52 and a secondary cutting edge 53. One end of the main cutting edge 52 is connected to the tip arc 51, and the radius (R) of the tip arc 51 is 0.4~2mm. A smaller radius can reduce radial cutting force, reduce vibration and improve surface quality, while a larger radius can improve impact resistance. The other end of the main cutting edge 52 is connected to the secondary cutting edge 53. The secondary cutting edge 53 is inclined so that it is lower than the main cutting edge 52, ensuring that only the main cutting edge 52 participates in effective cutting. The secondary cutting edge 53 plays a role in avoiding airflow and reducing frictional heat and surface damage.

[0035] Furthermore, the top surface 1 is provided with a chip removal groove 7 to prevent chip entanglement.

[0036] The blade is made of cemented carbide and coated with a wear-resistant coating. The substrate provides basic strength and toughness and bears mechanical loads; the coating enhances surface function and solves wear and thermal failure problems. The combination of the two greatly improves the performance of the blade.

[0037] This utility model also provides a milling cutter, including the above-mentioned rapid feed milling insert and a cutter shank. The cutter shank is provided with multiple mounting seats, and the mounting seats are also provided with threaded holes. After the rapid feed milling insert is assembled into the mounting seat, it is fixed by screwing it into the threaded holes.

[0038] Obviously, the above-described embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A rapid feed milling cutter, characterized in that, The tool includes a rectangular blade body with screw mounting holes. The blade body is formed by a bottom surface, a top surface, and a side surface. The side surface has a first side mounting surface along the long side of the blade body and a second side mounting surface along the short side of the blade body. The connection between the first side mounting surface and the top surface forms a side milling cutting edge, and the connection between the second side mounting surface and the top surface forms an end milling cutting edge. The end milling cutting edge includes a tip arc, and the side milling cutting edge is straight. The side milling cutting edge is tangentially connected to one end of the tip arc. When the first and second side mounting surfaces are fitted with the mounting base of the tool holder, the side milling cutting edge is parallel to the axis of the tool holder and the side milling cutting edges are on the same cylindrical surface.

2. A rapid feed milling insert according to claim 1, characterized in that, The principal cutting edge angle of the side milling cutting edge is 89.5°~90.5°.

3. A rapid feed milling insert according to claim 1, characterized in that, The blade body has a centrally symmetrical structure.

4. A rapid feed milling insert according to claim 1, characterized in that, The side milling cutting edge and the end milling cutting edge are provided with cutting edges.

5. A rapid feed milling insert according to claim 1, characterized in that, The end milling cutting edge also includes a main cutting edge and a secondary cutting edge; one end of the main cutting edge is connected to the tool tip arc, and the other end is connected to the secondary cutting edge, which is inclined.

6. A rapid feed milling insert according to claim 5, characterized in that, A transition edge is also provided between the main cutting edge and the secondary cutting edge, and the transition edge is set in an arc.

7. A rapid feed milling insert according to claim 5, characterized in that, The radius (R) of the blade tip arc is 0.4mm to 2mm.

8. A rapid feed milling insert according to claim 1, characterized in that, The top surface is provided with a chip removal groove.

9. A rapid feed milling insert according to claim 1, characterized in that, The blade is made of cemented carbide and has a wear-resistant coating on its surface.

10. A milling cutter, characterized in that, The invention includes the rapid feed milling insert as described in any one of claims 1 to 9, and also includes a tool holder, which is provided with a plurality of mounting seats, and the mounting seats are also provided with threaded holes. After the rapid feed milling insert is assembled into the mounting seat, it is fixed by screwing it into the threaded holes.

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