High-strength non-magnetic cemented carbide tool

Abstract

The utility model discloses a high strength non -magnetic hard alloy cutter, including milling cutter body, four equal angle layout's cutting edge part is equipped with to milling cutter body end portion along the circumference, cutting edge part is equipped with rake face, relief face and side cutting edge along the direction of peripheral wall respectively, and rake face and relief face are opposite setting, and it is connected through side cutting edge transition between rake face and relief face, and the included angle between rake face and milling cutter body central axis is first included angle, and the second included angle of intersection is formed between rake face and side cutting edge, and the chip flute is formed between two adjacent cutting edge parts. The utility model discloses four equal angle layout's cutting edge part is arranged in the milling cutter body end portion, makes the cutter avoid uneven cutting force and leads to deformation or chipping in the cutting process, and multiple cutting edge parts cut simultaneously, effectively improve the cutting efficiency of cutter, and the opposite setting of rake face and relief face can reduce the concentrated cutting force, reduce the wear and deformation of cutter, make the cutting process more smooth.

Description

Technical Field

[0001] This utility model relates to the field of cemented carbide cutting tools, and in particular to a high-strength non-magnetic cemented carbide cutting tool. Background Technology

[0002] Carbide cutting tools are cutting tools made of carbide materials. They are widely used in various machining and metal cutting operations. They have high hardness, strong wear resistance and excellent high temperature resistance, and are widely used in metal processing and mold manufacturing.

[0003] In the existing technology, traditional cemented carbide tools have problems such as low cutting strength and uneven cutting force distribution when machining special materials under high load and high speed. This can easily lead to localized wear, deformation or even chipping, thus affecting the machining accuracy and stability of the tool.

[0004] Therefore, existing technologies have shortcomings and need to be improved. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a high-strength non-magnetic cemented carbide tool that effectively improves cutting strength and machining accuracy.

[0006] To achieve this objective, the present invention adopts the following technical solution: a high-strength non-magnetic cemented carbide cutting tool, comprising a milling cutter body, wherein the end of the milling cutter body is provided with four equally angled cutting edges along the circumferential direction;

[0007] The top surface of the blade is parallel to the horizontal plane. The blade is provided with a front blade surface, a rear blade surface and a side blade surface along the peripheral wall direction. The front blade surface and the rear blade surface are arranged opposite to each other, and the front blade surface and the rear blade surface are connected by the side blade surface.

[0008] The end face of the rake face is planar, and the angle between the rake face and the central axis of the milling cutter body is the first angle, which is 30-38°.

[0009] Both the rear cutting face and the side cutting face are arc-shaped structures, and the front cutting face and the side cutting face form an intersecting second included angle, the angle of which is 40-52°;

[0010] A chip removal groove is formed between two adjacent cutting edges, and the chip removal groove is spirally arranged along the extension direction of the milling cutter body.

[0011] In the high-strength non-magnetic cemented carbide cutting tool described above, the bottom of the inner cylinder is provided with a conical structure, and the material discharge port is located on the conical structure.

[0012] In the high-strength non-magnetic cemented carbide cutting tool described above, a guide slope is provided at the position of the chip removal groove near the end face of the milling cutter body. The guide slope is used to guide and transport the material into the chip removal groove.

[0013] Using the above technical solution, in the high-strength non-magnetic cemented carbide cutting tool, the width of the guide slope gradually decreases along the direction close to the chip removal groove.

[0014] In the high-strength non-magnetic cemented carbide cutting tool described above, a chip-blocking surface is formed between the rake face and the chip removal groove, and the chip-blocking surface is perpendicular to the horizontal plane.

[0015] Using the above technical solution, the surface of the cutting edge of the high-strength non-magnetic cemented carbide cutting tool is coated with titanium nitride or aluminum titanium nitride coating.

[0016] In the high-strength non-magnetic cemented carbide cutting tool described above, the first included angle is 34° and the second included angle is 48°.

[0017] Using the above technical solution, in the high-strength non-magnetic cemented carbide cutting tool, the milling cutter body is made of tungsten-cobalt alloy or tungsten-molybdenum alloy.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This invention features four equally angled cutting edges at the end of the milling cutter body, preventing deformation or chipping due to uneven cutting forces during the cutting process. The simultaneous cutting by multiple cutting edges effectively improves the cutting efficiency. The rake face and flank face are positioned opposite each other and connected by a side face, reducing concentrated cutting forces, minimizing tool wear and deformation, and ensuring a smoother cutting process. The chip removal groove effectively guides chip removal, preventing chip accumulation and further enhancing cutting efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a top view of the structure of this utility model;

[0024] Figure 3 This is a front structural diagram of the present invention. Detailed Implementation

[0025] To make the utility model's objectives, features, and advantages more apparent and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0026] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component centrally located at the same time.

[0027] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0028] like Figures 1 to 3As shown, this utility model embodiment provides a high-strength non-magnetic cemented carbide cutting tool, including a milling cutter body 1. The end of the milling cutter body 1 is provided with four equally angled cutting edges 10 along the circumferential direction. When the milling cutter is cutting, each cutting edge 10 cuts into the workpiece at an equal angle and gradually enters the cutting state. Because the cutting edges 10 are evenly arranged, the tool can maintain a stable stress state during the cutting process, effectively reducing tool deformation or chipping caused by uneven cutting force. In addition, the structure of the four cutting edges 10 can effectively improve the processing efficiency of the tool. Multiple cutting edges 10 participate in cutting at the same time, reducing the workload of a single cutting edge 10 and avoiding local overheating of the tool.

[0029] The top surface of the cutting edge 10 is parallel to the horizontal plane. The cutting edge 10 is provided with a rake face 101, a flank face 102, and a side face 103 along the peripheral wall direction. The rake face 101 and the flank face 102 are arranged opposite to each other, and the rake face 101 and the flank face 102 are connected by the side face 103. During the cutting process, the rake face 101 of the cutting edge 10 first contacts the workpiece. By arranging the rake face 101 and the flank face 102 opposite to each other, excessive concentrated cutting force can be avoided, thereby reducing tool wear and deformation. The rake face 101 and the flank face 102 are connected by the side face 103, making the cutting process smoother. The side face 103 can also guide the chips, effectively reducing chip accumulation and preventing the workpiece surface from being blocked by chips during the cutting process.

[0030] The end face of the rake face 101 is planar. The angle between the rake face 101 and the central axis of the milling cutter body 1 is the first angle α. The angle of the first angle α is 30-38°. In this embodiment, the angle of the first angle α is 34°. This setting allows the tool to cut at an appropriate entry angle during the cutting process, thereby improving cutting efficiency, reducing the heat generated during the cutting process, and thus improving cutting stability.

[0031] Both the flank face 102 and the side face 103 are arc-shaped structures. The rake face 101 and the side face 103 form an intersecting second included angle β. The angle of the second included angle β is 40-52°. In this embodiment, the angle of the second included angle β is 48°. This can reduce the cutting resistance when the tool contacts the workpiece, avoid chipping during the cutting process, and facilitate the smooth discharge of chips, thus improving the smoothness of the cutting process.

[0032] A chip removal groove 100 is formed between two adjacent cutting edge portions 10. The chip removal groove 100 is spirally arranged along the extension direction of the milling cutter body 1. The chip removal groove 100 can guide and discharge the chips generated during the cutting process, and prevent the chips from accumulating between the tool and the workpiece, thus affecting the cutting effect.

[0033] like Figure 1 As shown, the chip removal groove 100 is further provided with a guide slope 104 near the end face of the milling cutter body 1. The guide slope 104 is used to guide and transport the material into the chip removal groove 100. This arrangement allows the chips to flow smoothly into the chip removal groove 100 for discharge.

[0034] like Figure 1 As shown, furthermore, the width of the guide slope 104 gradually decreases along the direction close to the chip discharge groove 100, thereby improving the stability of chip discharge.

[0035] like Figure 1 As shown, a chip-blocking surface 105 is further formed between the front cutting surface 101 and the chip removal groove 100. The chip-blocking surface 105 is perpendicular to the horizontal plane. In this way, the chips can be prevented from slipping out of the chip removal groove 100 under the action of centrifugal force, so that the chips can be smoothly guided into the chip removal groove 100.

[0036] Furthermore, the surface of the cutting edge 10 is coated with titanium nitride or titanium aluminum nitride coating. In this embodiment, the surface of the cutting edge 10 is coated with titanium nitride coating. Titanium nitride coating has high hardness and good wear resistance, which can effectively reduce surface wear of the tool, extend the service life of the tool, and reduce the cost and downtime of frequent tool replacement.

[0037] Furthermore, the milling cutter body 1 is made of tungsten-cobalt alloy or tungsten-molybdenum alloy. In this embodiment, the milling cutter body 1 is made of tungsten-cobalt alloy. Tungsten-cobalt alloy has high hardness and wear resistance, which effectively avoids brittle fracture or chipping of the tool. At the same time, tungsten-cobalt alloy has good thermal stability, which can reduce tool softening and thermal wear problems during the cutting process.

[0038] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A high-strength non-magnetic cemented carbide cutting tool, characterized in that, It includes a milling cutter body, wherein the end of the milling cutter body is provided with four cutting edges arranged at equal angles along the circumferential direction; The top surface of the blade is parallel to the horizontal plane. The blade is provided with a front blade surface, a rear blade surface and a side blade surface along the peripheral wall direction. The front blade surface and the rear blade surface are arranged opposite to each other, and the front blade surface and the rear blade surface are connected by the side blade surface. The end face of the rake face is planar, and the angle between the rake face and the central axis of the milling cutter body is the first angle, which is 30-38°. Both the rear cutting face and the side cutting face are arc-shaped structures, and the front cutting face and the side cutting face form an intersecting second included angle, the angle of which is 40-52°; A chip removal groove is formed between two adjacent cutting edges, and the chip removal groove is spirally arranged along the extension direction of the milling cutter body.

2. The high-strength, non-magnetic cemented carbide tool according to claim 1, characterized in that, The chip removal groove is provided with a guide slope near the end face of the milling cutter body. The guide slope is used to guide and convey the material into the chip removal groove.

3. The high-strength, non-magnetic cemented carbide tool according to claim 2, characterized in that The width of the guide slope gradually decreases along the direction close to the chip removal groove.

4. The high-strength, non-magnetic cemented carbide tool of claim 1, wherein, A chip-blocking surface is formed between the rake face and the chip removal groove, and the chip-blocking surface is perpendicular to the horizontal plane.

5. The high-strength, non-magnetic cemented carbide tool of claim 1, wherein, The blade surface is coated with titanium nitride or aluminum titanium nitride coating.

6. The high-strength, non-magnetic cemented carbide tool of claim 1, wherein, The first included angle is 34°, and the second included angle is 48°.

7. The high-strength, non-magnetic cemented carbide tool of claim 1, wherein, The milling cutter body is made of tungsten-cobalt alloy or tungsten-molybdenum alloy.

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