Milling blade structure with cutting edge capable of being circularly repaired and modularly customized

Abstract

The invention discloses a milling blade structure capable of being repaired circularly and provided with a modularized customized cutting edge, and belongs to the technical field of numerical control cutters. The milling blade structure capable of being repaired circularly and provided with the modularized customized cutting edge comprises a blade base body, inlaying grooves are formed in the two cutting edge ends of the blade base body, and cutting edge inserts are welded to the inlaying grooves; the milling blade can be designed into a modular structure in which the blade base body and the cutting edge insert are separated, so that after the cutting edge insert is abraded, the whole blade does not need to be discarded, and the blade base body can be put into use again only by replacing a new cutting edge insert, so that the utilization rate of the blade base body is remarkably improved, precious tungsten resources are saved, and the production cost is reduced. The use cost of a user is reduced; and the cutting edge inserts with different performance parameters such as hardness, wear resistance and toughness can be flexibly selected and replaced according to specific machining materials, machining technologies, precision requirements and the like, modular customization of the cutting edge is achieved, and diversified machining requirements are met.

Description

Technical Field

[0001] This invention relates to the field of CNC cutting tool technology, and more specifically, to a milling insert structure with a recyclable, repairable, modular, and customizable cutting edge. Background Technology

[0002] Milling inserts are components mounted on milling cutters that directly participate in cutting the workpiece and are a key part of milling processes. They are typically made of high-hardness, high-wear-resistant materials and remove excess material from the workpiece through intermittent cutting via rotating teeth. They are used to machine planes, steps, grooves, and shaped surfaces.

[0003] Currently, existing APMT1604, APMT1135, and APKT1604 and APKT1135 series end mills are typically made of solid carbide. Once the cutting edge wears down, the entire insert is scrapped, resulting in a significant waste of tungsten resources and high operating costs. Existing repair technologies can only perform simple edge re-grinding and cannot recycle the substrate or flexibly replace the cutting edge material with one of different properties according to machining requirements. Therefore, this paper studies and improves the existing structure to provide an end mill structure that can be recycled, repaired, and modularly customized to achieve greater practical value. Summary of the Invention

[0004] 1. Technical problems to be solved

[0005] To address the problems existing in the prior art, the purpose of this invention is to provide a recyclable, modularly customizable milling insert structure. By designing the milling insert as a modular structure where the insert body and the cutting edge insert are separate, when the cutting edge insert wears down, the entire insert does not need to be discarded; only a new cutting edge insert needs to be replaced, allowing the insert body to be reused. This significantly improves the utilization rate of the insert body, saves valuable tungsten resources, and reduces user costs. Furthermore, it allows for flexible selection and replacement of cutting edge inserts with different hardness, wear resistance, toughness, and other performance parameters based on specific machining materials, processes, and precision requirements, achieving modular customization of the cutting edge and meeting diverse machining needs.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A recyclable, repairable, modularly customizable milling insert structure includes an insert base, with inlay grooves at both cutting ends of the insert base, cutting edge inserts welded onto the inlay grooves, and a fixing center hole penetrating the upper and lower surfaces of the insert base.

[0009] The inlay groove is composed of two inner hook bevels, and the cross-section of the inlay groove has a "V" shape.

[0010] The cutting edge insert includes a lower contact surface and a side contact surface, and the lower contact surface and the side contact surface are adapted to be fitted and welded to the inner hook bevel corresponding to the insert groove.

[0011] The cutting edge insert also includes a main cutting edge, a secondary cutting edge, a main rake face, a main flank face, a secondary flank face, and a transition edge. The main cutting edge is connected to the transition edge, a cutting arc is provided between the transition edge and the secondary cutting edge, and a transition arc segment is provided between the main flank face and the secondary flank face.

[0012] Furthermore, the inlay groove is a triangular inclined surface that is higher at the top and lower at the bottom.

[0013] Furthermore, the end of the main rake face near the transition edge is a planar structure, and the end of the main rake face away from the transition edge is a beveled structure.

[0014] Furthermore, a "V"-shaped groove is provided on the top of the blade base. The two inclined surfaces of the "V"-shaped groove have the same inclination angle as the corresponding main rake face, and together they form a chip removal groove.

[0015] Furthermore, the blade substrate is made of cemented carbide.

[0016] Furthermore, the cutting edge insert is made of cemented carbide or cermet.

[0017] 3. Beneficial Effects

[0018] Compared with the prior art, the advantages of this invention are:

[0019] (1) This solution designs the milling insert as a modular structure with the insert body and the cutting edge insert separated. When the cutting edge insert wears down during use and can no longer meet the cutting requirements, the user does not need to discard the entire milling insert. The user only needs to remove the worn cutting edge insert from the insert slot of the insert body and replace it with a new cutting edge insert to restore the insert body to its usability. This design significantly improves the utilization rate of the insert body and avoids the waste of resources caused by the complete scrapping of traditional integral milling inserts due to cutting edge wear. In particular, for insert bodies made of precious materials such as cemented carbide, it can effectively save valuable tungsten resources and also greatly reduce the user's operating costs and reduce the economic burden caused by frequent replacement of the entire insert.

[0020] (2) In this scheme, by setting the inlay groove, the inlay groove adopts a "V" shaped structure composed of two inner hook bevels. The lower contact surface and the side contact surface of the cutting edge insert can be precisely matched and fitted with the inner hook bevels corresponding to the inlay groove. This design not only ensures the positioning accuracy between the cutting edge insert and the blade substrate, but also forms a stable connection after welding and fixing, effectively improving the welding strength and preventing the cutting edge insert from loosening or shifting during the cutting process, thus ensuring the stability and reliability of the cutting process. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a front view structural diagram of the present invention;

[0023] Figure 3 This is a side view of the structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the disassembled structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the blade substrate structure of the present invention.

[0026] Explanation of the labels in the diagram:

[0027] 1. Blade substrate;

[0028] 2. "V" shaped center groove;

[0029] 3. Inlay groove;

[0030] 4. Fix the center hole;

[0031] 5. Lower bonding surface;

[0032] 6. Side bonding surface;

[0033] 7. Main cutting edge;

[0034] 8. Secondary cutting edge;

[0035] 9. Main rake face;

[0036] 10. Main back face;

[0037] 11. Secondary back face;

[0038] 12. Transition edge;

[0039] 13. Transition arc segment;

[0040] 14. Cutting arcs. Detailed Implementation

[0041] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0042] Example:

[0043] Please see Figures 1-5 A recyclable, repairable, modularly customizable milling insert structure includes an insert base 1, with inlay grooves 3 at both cutting edge ends of the insert base 1, cutting edge inserts welded onto the inlay grooves 3, and a fixing center hole 4 penetrating the upper and lower surfaces of the insert base 1.

[0044] The inlay groove 3 is composed of two inner hook bevels, and the cross section of the inlay groove 3 is a "V" shaped structure. The matching cutting edge insert adopts the same tilt angle design to form a "mortise and tenon" fitting structure. This structure greatly improves the welding contact area and mechanical interlocking strength, and prevents the insert from falling off during cutting.

[0045] The cutting edge insert includes a lower mating surface 5 and a side mating surface 6. The lower mating surface 5 and the side mating surface 6 are fitted and welded to the inner hook bevels corresponding to the insert groove 3.

[0046] The cutting edge insert also includes a main cutting edge 7, a secondary cutting edge 8, a main rake face 9, a main flank face 10, a secondary flank face 11, and a transition edge 12. The main cutting edge 7 is connected to the transition edge 12. A cutting arc 14 is provided between the transition edge 12 and the secondary cutting edge 8. A transition arc segment 13 is provided between the main flank face 10 and the secondary flank face 11.

[0047] See Figure 5 The inlay groove 3 is a triangular sloping surface that is higher at the top and lower at the bottom.

[0048] See Figure 4 The end of the main rake face 9 closest to the transition edge 12 is a planar structure, while the end of the main rake face 9 furthest from the transition edge 12 is a beveled structure.

[0049] See Figure 1 The top of the blade base 1 is provided with a "V" shaped groove 2. The two inclined surfaces of the "V" shaped groove 2 are at the same inclination angle as the inclined surfaces of the corresponding main rake face 9, and together they form a chip removal groove.

[0050] See Figure 1The blade substrate 1 is made of cemented carbide, and the cutting edge insert is made of cemented carbide or cermet. During use, the blade substrate 1 is made of general-purpose cemented carbide and can be used repeatedly for a long time. The cutting edge insert can be made of different grades of cemented carbide according to the processing scenario: when processing cast iron, a cemented carbide grade that is resistant to chipping is selected; when processing steel, a cemented carbide grade that is wear-resistant is selected; thus achieving a precise match between the cutting edge material and the workpiece being processed.

[0051] Working principle: When in use, the milling cutter is designed as a modular structure in which the cutter body 1 and the cutting edge insert are separated. When the cutting edge insert wears down during use and can no longer meet the cutting requirements, the user does not need to discard the entire milling cutter. The user only needs to remove the worn cutting edge insert from the insert groove of the cutter body 1 and replace it with a new cutting edge insert to restore the function of the cutter body 1. This design significantly improves the utilization rate of the insert substrate 1, avoiding the resource waste caused by the complete scrapping of traditional integral milling inserts due to edge wear. Especially for insert substrates made of precious materials such as cemented carbide, it can effectively save valuable tungsten resources and also significantly reduce the user's operating costs, reducing the economic burden of frequent replacement of the entire insert. Through the setting of the insert groove 3, which adopts a "V"-shaped structure composed of two inner hook bevels, the lower contact surface and the side contact surface of the cutting edge insert can be precisely matched and welded with the corresponding inner hook bevel of the insert groove 3. This design not only ensures the positioning accuracy between the cutting edge insert and the insert substrate 1, but also forms a stable connection after welding and fixing, effectively improving the welding strength and preventing the cutting edge insert from loosening or shifting during the cutting process, thus ensuring the stability and reliability of the cutting process.

[0052] Finally, it should be noted that in the description of this invention, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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 invention.

[0053] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concept, should be covered within the scope of protection of the present invention.

Claims

1. A recyclable, repairable, modularly customizable milling insert structure, comprising an insert base (1), characterized in that: The blade base (1) has two cutting edge ends with inlay grooves (3), and cutting edge inserts are welded on the inlay grooves (3). The blade base (1) has a fixed center hole (4) that penetrates the upper and lower surfaces of the blade base (1). The inlay groove (3) is composed of two inner hook bevels, and the cross section of the inlay groove (3) is a "V" shaped structure; The cutting edge insert includes a lower contact surface (5) and a side contact surface (6), and the lower contact surface (5) and the side contact surface (6) are adapted to be welded to the inner hook bevel corresponding to the inlay groove (3); The cutting edge insert also includes a main cutting edge (7), a secondary cutting edge (8), a main rake face (9), a main flank face (10), a secondary flank face (11), and a transition edge (12). The main cutting edge (7) is connected to the transition edge (12). A cutting arc (14) is provided between the transition edge (12) and the secondary cutting edge (8). A transition arc segment (13) is provided between the main flank face (10) and the secondary flank face (11).

2. The milling insert structure with recyclable repair and modular customizable cutting edge according to claim 1, characterized in that: The inlay groove (3) is a triangular inclined surface that is higher at the top and lower at the bottom.

3. The milling insert structure with recyclable repair and modular customizable cutting edge according to claim 1, characterized in that: The end of the main rake face (9) near the transition edge (12) is a planar structure, and the end of the main rake face (9) away from the transition edge (12) is a beveled structure.

4. The milling insert structure with recyclable repair and modular customizable cutting edge according to claim 1, characterized in that: The top of the blade base (1) is provided with a "V" shaped groove (2). The two inclined surfaces of the "V" shaped groove (2) are at the same inclination angle as the inclined surfaces of the corresponding main rake face (9), and are combined to form a chip removal groove.

5. The milling cutter structure with recyclable repair and modular custom cutting edge according to claim 1, characterized in that: The blade substrate (1) is made of cemented carbide or metal ceramic.

6. The milling insert structure with recyclable repair and modular customizable cutting edge according to claim 1, characterized in that: The cutting edge insert is made of cemented carbide or metal ceramic.

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