Cutter

Abstract

The utility model provides a cutter. Wherein at least the cutting edge part of the cutter comprises a plating layer, and hard particles are dispersed in the plating layer. According to the cutter provided by the embodiment of the invention, the cutting edge part of the cutter comprises the plating layer and the hard particles dispersed in the plating layer, so that the cutter with the compact plating layer has certain hardness, wear resistance and corrosion resistance, and the hardness and wear resistance of the cutter can be further improved by the hard particles, so that the cutter can be ensured to be long-lasting sharp.

Description

Technical Field

[0001] This application relates to the field of kitchenware technology, specifically to a kitchen knife. Background Technology

[0002] Knives play an indispensable role in the kitchen. With the progress of the times and the improvement of people's quality of life, people's detailed requirements for knives have become increasingly apparent, such as the requirement for the knives to maintain their sharpness.

[0003] Existing knives generally lack sustained sharpness; after a period of use, the edge sharpness decreases, reducing the user experience. Therefore, it is essential to develop knives that maintain their sharpness over time. Utility Model Content

[0004] This application aims to at least address the problem of the generally poor long-lasting sharpness of cutting tools in the prior art or related technologies.

[0005] To achieve the above objectives, a first aspect of this application provides a cutting tool, wherein at least the cutting edge of the cutting tool includes a coating, and hard particles are dispersed in the coating.

[0006] According to the embodiments of this application, the cutting edge of the tool includes a coating and hard particles dispersed in the coating. Thus, the tool with a dense coating has a certain degree of hardness, wear resistance, and corrosion resistance. The hard particles can further increase the hardness and wear resistance of the tool, thereby ensuring that the tool remains sharp for a long time.

[0007] In some embodiments, the tip of the cutting edge has a micro-serrated structure, which facilitates cutting into food and ensures the cutting efficiency of the knife. Furthermore, the cutting edge with the micro-serrated structure has peaks and troughs; even if the peaks wear or become dull due to prolonged use, the troughs remain sharp. In other words, even after the peaks wear down, the knife can still use the troughs for cutting, thereby improving the knife's long-term sharpness.

[0008] In some embodiments, the peak spacing between adjacent serrations in the micro-serration structure is L1, where 3 micrometers ≤ L1 ≤ 10 micrometers. This facilitates a balance between cutting efficiency and durability. If the peak spacing is too small, the cutting force may become too concentrated, increasing edge wear; if the peak spacing is too large, cutting efficiency may decrease. And / or the width of the serrations in the micro-serration structure is W1, where 3 micrometers ≤ W1 ≤ 8 micrometers, and the height is H1, where 1 micrometer ≤ H1 ≤ 4 micrometers. This allows for the formation of suitable serrations, ensuring stable cutting performance during the cutting process and extending tool life.

[0009] In some embodiments, the thickness of the coating is 8-15 micrometers. Within this thickness range, multiple aspects such as cost, hardness, and sharpness can be balanced. When the coating thickness is less than 8 micrometers, the coating thickness is insufficient to disperse enough hard particles; when the coating thickness is greater than 15 micrometers, the cost is high.

[0010] In some embodiments, the hardness of the coating is 300HV-600HV. Within this hardness range, multiple aspects such as cutting performance, durability, processing cost, and ease of processing can be balanced. When the hardness of the coating is lower than 300HV, hard particles in the cutting edge are easily detached during cutting at the hardness angle. When the hardness of the coating is higher than 600HV, the process of forming the coating is more difficult and costly.

[0011] In some embodiments, the coating comprises a chromium layer, a nickel-iron-tungsten layer, a nickel-tungsten layer, or a nickel layer. These coatings all possess suitable hardness and wear resistance, thereby enabling the cutting tool to maintain a sharp cutting edge and reduce wear during cutting.

[0012] In some embodiments, the hard particles include silicon carbide, alumina, zirconium oxide, aluminum nitride, or silicon nitride. These materials possess excellent wear resistance, corrosion resistance, and stability, and as reinforcing phases at the cutting edge of tools, they can improve the cutting performance and durability of the tools.

[0013] In some embodiments, the number of hard particles in the coating per 10 square micrometers is 2 to 6, based on cross-section. If the number of hard particles in the cross-section of the coating is less than 2, it indicates that the number of hard particles is too small. In this case, the micro-serration structure of the formed cutting edge may not be obvious, and the effect of hard particles in reinforcing the cutting edge is not prominent. If the number of hard particles in the cross-section of the coating is greater than 6, it indicates that the number of hard particles is too large, which will form a cutting edge with high hardness, making it prone to chipping during use, thereby reducing the sustained sharpness.

[0014] In some embodiments, the size of the hard particles is 3-8 micrometers. If the size of the hard particles is less than 3 micrometers, the micro-serration structure at the cutting edge may be indistinct; if the size of the hard particles is greater than 8 micrometers, obvious notches may appear during use. And / or the hard particles are at least one of spherical, rod-shaped, and quasi-spherical shapes. Such shapes can balance the cutting performance, wear resistance, surface quality, and stress distribution of the tool, resulting in a tool with excellent performance in all aspects, thereby ensuring long-lasting sharpness.

[0015] In some embodiments, the cutting tool includes a tool body, the plating being formed on the tool body and extending beyond one side edge of the tool body to form the cutting edge.

[0016] In these embodiments, the coating is formed on the tool body, meaning the tool body is the substrate or carrier of the coating. The tool body possesses certain mechanical and cutting properties and is relatively inexpensive. The introduction of the coating can improve certain properties of the tool body, such as hardness, wear resistance, and corrosion resistance, thereby enabling the acquisition of a high-performance tool at a reduced cost.

[0017] Specifically, the portion of the tool body connected to the cutting edge includes a first surface and a second surface opposite each other in the thickness direction. The first surface and the second surface intersect each other. The angle between the first surface and the height direction of the tool is α, and the angle between the second surface and the height direction of the tool is β, wherein α is greater than or equal to β. The coating is disposed on the second surface and extends beyond the intersection of the first surface and the second surface.

[0018] In these embodiments, it is convenient to form the tool with the specific structure described above using existing processes, thus simplifying the tool manufacturing process. Attached Figure Description

[0019] The above and other objects and features of this application will become clearer from the following description of embodiments in conjunction with the accompanying drawings, in which:

[0020] Figure 1 A schematic diagram of the structure of a cutting tool provided according to an embodiment of this application is shown;

[0021] Figure 2 It shows along Figure 1 A schematic diagram of the cross-sectional structure of the portion cut along the BB line in the diagram;

[0022] Figure 3 It shows Figure 1 A magnified structural diagram at point I in the diagram;

[0023] Figure 4 This is a schematic diagram of the structure of a tool after electroplating, obtained using the tool manufacturing method.

[0024] Symbol Explanation

[0025] 10. Blade tip; 20. Edge; 21. Coating; 22. Hard particles; 30. Micro-serrated structure;

[0026] 40. Tool body; 41. First surface; 42. Second surface; 50. Handle; 60. Back of the tool. Detailed Implementation

[0027] The following detailed embodiments are provided to aid the reader in gaining a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will become apparent upon understanding this disclosure. For example, the order of operations described herein is merely illustrative and is not limited to those orders set forth herein, but may be changed as will become clear upon understanding this disclosure, except for operations that must occur in a specific order. Furthermore, for clarity and conciseness, descriptions of features known in the art may be omitted.

[0028] The features described herein may be implemented in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein are provided only to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein, which will become clear upon understanding the disclosure of this application.

[0029] As used herein, the term “and / or” includes any one of the associated listed items and any combination of any two or more.

[0030] Although terms such as “first,” “second,” and “third” may be used herein to describe various components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts should not be limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Thus, without departing from the teaching of the examples described herein, the first component, first assembly, first region, first layer, or first part referred to as the first component, first assembly, first region, first layer, or first part may also be referred to as the second component, second assembly, second region, second layer, or second part.

[0031] In the specification, when an element such as a layer, region, or substrate is described as being "on" another element, "connected to," or "mounted to" another element, the element may be directly "on" another element, directly "connected to," or "mounted to" the other element, or one or more other elements may be present in between. Conversely, when an element is described as being "directly on" another element, "directly connected to," or "directly mounted to" another element, no other elements may be present in between.

[0032] The terminology used herein is for the purpose of describing various examples only and is not intended to limit disclosure. Unless the context clearly indicates otherwise, the singular form is intended to include the plural form as well. The terms “comprising,” “including,” and “having” indicate the presence of the described features, quantities, operations, components, elements, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof. The term “a plurality” represents any quantity of two or more.

[0033] The directional terms such as "upper," "lower," "top," "bottom," and "height direction" used in this application are all based on the orientation of the product when it is held upright in normal use.

[0034] Unless otherwise defined, all terms used herein, including technical and scientific terms, shall have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains after understanding the invention. Unless expressly defined herein, terms such as those defined in a general dictionary shall be interpreted as having a meaning consistent with their meaning in the context of the relevant field and in this invention, and shall not be interpreted in an idealized or overly formalistic manner.

[0035] Furthermore, in the description of the examples, detailed descriptions of well-known related components or functions will be omitted when it is believed that such detailed descriptions would lead to a vague interpretation of the present invention.

[0036] The following will combine Figures 1 to 4 The present application will now describe the cutting tools provided in the embodiments of this application.

[0037] According to an embodiment of this application, a knife is provided, specifically a kitchen knife, wherein, as... Figures 1 to 3 As shown, the cutting tool has a cutting edge 20 and a back 60 on both sides in the height direction. The outer edge of the cutting edge 20 forms a cutting tip 10, which is the main working part of the tool when cutting, while the back 60 is used to provide support and stability. According to this application, at least the cutting edge 20 of the tool includes a coating 21, and hard particles 22 are dispersed in the coating 21.

[0038] According to the embodiments of this application, the cutting edge of the tool includes a coating 21 and hard particles 22 dispersed in the coating 21. Thus, the tool with a dense coating 21 has a certain degree of hardness, wear resistance, and corrosion resistance. The hard particles 22 can further increase the hardness and wear resistance of the tool, thereby ensuring that the tool remains sharp for a long time.

[0039] According to this application, a coating can be formed first, and then hard particles can be dispersed in the uncured coating to form the cutting edge of the tool according to this application, which includes a coating 21 and hard particles 22 dispersed in the coating 21. Alternatively, the cutting edge of this application can be formed on the tool body by barrel plating with a plating solution including hard particles 22.

[0040] In some embodiments, such as Figure 3 As shown, the tip 10 of the cutting edge 20 has a micro-serrated structure 30. This micro-serrated structure 30 facilitates cutting into food, ensuring the knife's cutting efficiency. Furthermore, the cutting edge with the micro-serrated structure has peaks and troughs; even if the peaks wear or become dull due to prolonged use, the troughs remain sharp. In other words, even after the peaks wear down, the knife can still use the troughs for cutting, thus improving the knife's long-lasting sharpness.

[0041] According to this application, the micro-serrated structure at the cutting tip 10 can be formed in various ways. As some examples, a laser beam can be used to perform precise micro-machining at the cutting tip to form the desired micro-serrated structure. As other examples, the micro-serrated structure can be formed by mechanical grinding.

[0042] According to this application, the cutting edge 20 includes a coating 21 and hard particles 22 dispersed in the coating 21. It can be understood that the cutting tip 10 of the cutting edge 20 is also a mixed structure of the coating 21 and hard particles 22. In some embodiments, the hardness of the coating is greater than the hardness of the hard particles. In this case, the cutting tip 10 of the tool is made of multiple materials with different hardnesses. Thus, during the use of the tool, the cutting tip 10 is easy to form a micro-serration structure after the sharpening process, thereby ensuring that the tool remains sharp for a long time.

[0043] According to this application, the specific dimensional parameters of the micro-serration structure 30 will also affect the cutting performance and durability of the tool, including dimensional parameters such as the peak spacing between two adjacent serrations, the width of the serration, and the height of the serration.

[0044] In some embodiments, the peak spacing between two adjacent serrations in the micro-serration structure 30 is L1, wherein 3 micrometers ≤ L1 ≤ 10 micrometers. This facilitates a balance between cutting efficiency and durability. If the peak spacing is too small, the cutting force may become too concentrated, increasing the wear on the cutting edge; if the peak spacing is too large, the cutting efficiency may be reduced.

[0045] According to this application, such as Figure 3As shown, the serrations in the micro-serration structure 30 are convex arc-shaped. In some embodiments, the width of the serrations in the micro-serration structure 30 is W1, where 3 micrometers ≤ W1 ≤ 8 micrometers, and the height is H1, where 1 micrometer ≤ H1 ≤ 4 micrometers. In this way, suitable serrations can be formed, ensuring that the tool maintains stable cutting performance during the cutting process, while extending the tool's service life.

[0046] In some embodiments, the thickness of the coating 21 is 8 micrometers to 15 micrometers. Within this thickness range, multiple aspects such as cost, hardness, and sharpness can be balanced. When the thickness of the coating 21 is less than 8 micrometers, the thickness of the coating 21 is insufficient to disperse enough hard particles; when the thickness of the coating 21 is greater than 15 micrometers, the cost is high.

[0047] In some embodiments, the hardness of the coating 21 is 300HV-600HV. Within this hardness range, multiple aspects such as cutting performance, durability, processing cost, and ease of processing can be balanced. When the hardness of the coating 21 is lower than 300HV, the hard particles in the cutting edge 20 are easily detached during cutting at the hardness angle. When the hardness of the coating 21 is higher than 600HV, the process of forming the coating is more difficult and the cost is higher.

[0048] According to this application, the coating can be a layer formed by a plating solution in the prior art, specifically, it can be formed by a plating solution through chemical plating or electroplating. Since both chemical plating and electroplating deposit metals or alloys on the substrate surface through electrochemical or chemical reactions, the resulting coating is relatively dense and has no obvious pores or defects. This density helps prevent corrosive media (such as water, oxygen, acids, alkalis, etc.) from penetrating into the substrate, thereby protecting the substrate from corrosion.

[0049] In existing technologies, the cutting edge reinforcement structure formed by spraying, such as the rough layer, is prone to having large rough particles in the actual production process. These large particles can cause visible "gaps" on the finished tool, affecting the yield rate.

[0050] According to this application, the quality of the layer formed by the plating solution is relatively stable and uniform, and there will be no visible "gaps" or uneven quality, which can ensure the yield rate of the product to a certain extent.

[0051] According to this application, the coating formed by the plating solution has high hardness and wear resistance, thereby improving the cutting ability and service life of the cutting tool. In some embodiments, the coating 21 includes a chromium layer, a nickel-iron-tungsten layer, a nickel-tungsten layer, or a nickel layer, all of which have suitable hardness and wear resistance, enabling the cutting tool to maintain a sharp cutting edge and reduce wear during cutting.

[0052] In some embodiments, when the coating includes a nickel-iron-tungsten layer or a nickel-tungsten layer, a coating with a specific proportion can be formed using a plating solution in the prior art. For example, the weight proportion of nickel can be 80%-90% of the total weight of the coating, with the balance being tungsten or ferrotungsten.

[0053] According to this application, the hard particles include materials with high hardness such as carbides, nitrides, or diamond. This significantly extends tool life and improves cutting quality.

[0054] In some embodiments, the hard particles 22 include silicon carbide, alumina, zirconium oxide, aluminum nitride, or silicon nitride. These materials have good wear resistance, corrosion resistance, and stability, and as reinforcing phases at the cutting edge of the tool, they can improve the cutting performance and durability of the tool.

[0055] According to this application, the hard particles 22 at the cutting edge have a reasonable distribution density. If the distribution is too dense, the cutting edge hardness may be too high, making it prone to chipping during use; if the distribution is too sparse, the reinforcing effect of the hard particles may not be fully utilized, and a suitable micro-serration structure may not be formed. Therefore, a reasonable distribution density is necessary to balance cutting performance and durability.

[0056] The following example illustrates the distribution density of hard particles 22 at the cutting edge, using the number of hard particles 22 in each 10 square micrometers of coating 21 as an example.

[0057] In some embodiments, the number of hard particles 22 in each 10 square micrometers of coating 21 is 2 to 6. If the number of hard particles 22 in the cross-section of coating 21 is less than 2, it indicates that the number of hard particles 22 is too small. In this case, the micro-serration structure of the formed cutting edge may not be obvious, and the effect of hard particles in reinforcing the cutting edge is not prominent. If the number of hard particles 22 in the cross-section of coating 21 is greater than 6, it indicates that the number of hard particles 22 is too large, which will form a cutting edge with greater hardness, making it easy to chip during use, thereby reducing the durable sharpness.

[0058] According to this application, the size of the hard particles 22 affects the performance of the cutting tool, including hardness, wear resistance, cutting efficiency, and service life. In some embodiments, the size of the hard particles 22 is 3-8 micrometers. If the size of the hard particles 22 is less than 3 μm, the micro-serration structure at the cutting edge may be indistinct. If the size of the hard particles 22 is greater than 8 μm, obvious notches may appear during use.

[0059] According to this application, the shape of the hard particles 22 affects the micro-serration structure of the cutting tool, thereby affecting the cutting performance, surface quality, and stress distribution of the tool. In some embodiments, the shape of the hard particles 22 is at least one of spherical, rod-shaped, and quasi-spherical.

[0060] According to this application, hard particles can be dispersed in the coating in a variety of different ways. For example, hard particles can be dispersed in a plating solution, and then the plating solution can be barrel-plated onto the tool substrate to form a layer on the tool substrate. Then, the substrate with the layer can be divided to form different types of tools.

[0061] According to this application, at least the cutting edge 20 of the knife includes a coating 21. It is understood that the cutting edge of the knife can be formed by the coating alone, or the coating can be formed as a whole. The choice can be made based on the type of knife and the requirements. For example, if it is necessary to control costs and ensure the long-lasting sharpness of the knife, the cutting edge of the knife can be formed by the coating alone. This is more suitable for slicing knives, pointed knives, etc. If the overall performance of the knife is required to be better, the coating can be used as a material to form the whole knife. This is more suitable for lamb slicing knives and bone-chopping knives, etc.

[0062] In some embodiments, the cutting tool includes a cutting tool body 40, and a coating 21 is formed on at least the cutting tool body 40 and extends beyond one side edge of the cutting tool body 40, such as the lower edge, thereby forming a cutting edge 20.

[0063] In some embodiments, such as Figure 2 As shown, the portion (location) of the tool body 40 connected to the cutting edge 20 includes a first surface 41 and a second surface 42 opposite each other in its thickness direction. The first surface 41 and the second surface 42 extend obliquely relative to the height direction of the tool body 40, thus intersecting obliquely. The angle between the first surface 41 and the height direction of the tool is α, and the angle between the second surface 42 and the height direction of the tool is β, wherein α is greater than or equal to β. A plating layer is disposed on the second surface 42 and extends beyond the intersection of the first surface 41 and the second surface 42. As an example, α is greater than β; specifically, α+β is 20°-40°, and the absolute value of α-β is 5°.

[0064] In these embodiments, the coating 21 is formed on the tool body 40, meaning that the tool body 40 is the substrate or carrier of the coating 21. The tool body 40 can be made of metal or alloy materials, which possess certain mechanical and cutting properties and are relatively inexpensive. The introduction of the coating 21 is primarily to improve certain properties of the tool body 40, such as hardness, wear resistance, and corrosion resistance, thereby enabling the acquisition of a high-performance tool at a reduced cost.

[0065] According to this application, the knife also includes a handle 50, which is connected to the knife body 40, to facilitate the user's grip on the knife during use.

[0066] A method for manufacturing a cutting tool according to this application includes:

[0067] (1) Prepare the initial blank

[0068] According to this application, the two surfaces of the initial blank in the thickness direction can be inclined surfaces, thus forming a generally inverted conical structure.

[0069] (2) Pretreatment stage

[0070] Cleaning: First, clean the surface of the initial blank to remove oil and rust, ensuring surface smoothness and adhesion.

[0071] Degreasing: Removing grease from the surface of the initial blank through chemical or physical methods.

[0072] Rust removal: Removes rust and other impurities from the surface of the initial blank to improve the adhesion of the coating.

[0073] (3) Bevel grinding to form a second surface

[0074] According to this application, a method for manufacturing a cutting tool includes obliquely grinding one surface of an initial blank along its thickness direction to form a second surface.

[0075] (4) Electroplating the second surface

[0076] Specifically, a plating layer is formed on the surface of a metal product by barrel plating using a plating solution. The plating solution includes: nickel sulfate with a mass concentration of 10 g / L-18 g / L; sodium citrate with a mass concentration of 80 g / L-100 g / L; sodium tungstate with a mass concentration of 20 g / L-50 g / L; a pH value of 4-7; and a hard powder mass fraction of 2%-4%.

[0077] The treated tool is placed in an electrolytic cell containing an electroplating solution, with the tool as the cathode, to deposit a plating layer on its surface. The current density is controlled at 3 A / dm³. 2 -4A / dm 2 The electrolyte temperature is 40℃-60℃.

[0078] (5) Polish the other surface

[0079] According to this application, the method for manufacturing a cutting tool further includes grinding another surface of the cutting tool in the thickness direction after the above-mentioned treatment, thereby forming a cutting edge.

[0080] (6) Post-processing stage

[0081] Cleaning: Clean the electroplated metal products to remove residual electrolyte and other impurities.

[0082] Drying: Use appropriate drying methods, such as hot air drying or natural air drying, to ensure surface smoothness and prevent oxidation.

[0083] Figure 2 A schematic diagram of the cutting edge of the tool is shown. Figure 4 This is a schematic diagram of the structure of a tool after electroplating, obtained using the tool manufacturing method. (Refer to...) Figure 2 and Figure 4 , can follow Figure 4 AA ‘ and CC ‘ The dotted lines shown are polished to create a shape like... Figure 2 The cutting edge of the tool is shown. It should be noted that this application does not limit the manufacturing method of the tool. It is understood that those skilled in the art can also form a tool with a coating and hard particles using methods known in the art. For example, a coating can be formed first, and then hard particles can be dispersed in the uncured coating to form the cutting edge according to this application.

[0084] It should be noted that, along Figure 4 CC ‘ The dotted lines shown are polished only to give the resulting tool a good appearance.

[0085] While embodiments of this application have been described in detail above, those skilled in the art can make various modifications and variations to the embodiments of this application without departing from the spirit and scope of this application. However, it should be understood that, in the view of those skilled in the art, these modifications and variations will still fall within the spirit and scope of the embodiments of this application as defined in the claims.

Claims

1. A cutting tool, characterized in that, The cutting edge (20) of the cutting tool includes a coating (21) and hard particles (22) are dispersed in the coating (21), and the cutting edge (20) is formed as a mixture of the coating (21) and the hard particles (22).

2. The cutting tool according to claim 1, characterized in that, The cutting edge (20) has a micro-serrated structure (30) at the tip (10).

3. The cutting tool according to claim 2, characterized in that, The peak spacing between adjacent serrations in the micro-serration structure (30) is L1, wherein 3 micrometers ≤ L1 ≤ 10 micrometers; and / or the width of the serrations in the micro-serration structure (30) is W1, wherein 3 micrometers ≤ W1 ≤ 8 micrometers; the height of the serrations in the micro-serration structure (30) is H1, wherein 1 micrometer ≤ H1 ≤ 4 micrometers.

4. The cutting tool according to claim 1, characterized in that, The hardness of the coating (21) is 300HV-600HV.

5. The cutting tool according to claim 1, characterized in that, The thickness of the coating (21) is 8 micrometers to 15 micrometers; and / or the coating (21) includes a chromium layer, a nickel-iron-tungsten layer, a nickel-tungsten layer, or a nickel layer.

6. The cutting tool according to claim 1, characterized in that, The hard particles (22) include silicon carbide, aluminum oxide, zirconium oxide, aluminum nitride or silicon nitride.

7. The cutting tool according to claim 1, characterized in that, In terms of cross-section, the number of hard particles (22) in each 10 square micrometers of coating (21) is 2 to 6.

8. The cutting tool according to claim 1, characterized in that, The size of the hard particles (22) is 3 micrometers to 8 micrometers; and / or the hard particles (22) are at least one of spherical, rod-shaped and quasi-spherical.

9. The cutting tool according to any one of claims 1 to 8, characterized in that, The cutting tool includes a tool body (40), and the plating (21) is formed on the tool body (40) and extends beyond one side edge of the tool body (40) to form the cutting edge (20).

10. The cutting tool according to claim 9, characterized in that, The portion of the tool body (40) connected to the cutting edge (20) includes a first surface (41) and a second surface (42) opposite each other in the thickness direction. The first surface (41) and the second surface (42) intersect. The angle between the first surface (41) and the height direction of the tool is α, and the angle between the second surface (42) and the height direction of the tool is β, wherein α is greater than or equal to β. The coating is disposed on the second surface (42) and extends beyond the intersection of the first surface (41) and the second surface (42).

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