Hard alloy circular saw blade for trephine

Abstract

The utility model discloses a hard alloy circular saw blade for a trephine, which relates to the technical field of cutting and comprises a trephine body, a plurality of groups of saw teeth arranged circumferentially at equal intervals are arranged on the trephine body, each saw tooth consists of a left helical tooth, a right helical tooth and a sharp tooth, the right helical tooth is positioned between the left helical tooth and the sharp tooth, and the cutting edge angle epsilon of the left helical tooth and the right helical tooth is 5 degrees. The tool cutting edge angle epsilon of the sharp teeth is 15 degrees, the sharp teeth are in left-right inclined symmetrical design, centripetal angles with Tp being 1 degree are designed on the side faces of the left inclined teeth, the right inclined teeth and the sharp teeth, and circumferential angles with Tr being 3 degrees are designed on the side faces of the left inclined teeth, the side faces of the right inclined teeth and the side faces of the sharp teeth. Due to the design of the tool cutting edge angle, the cutting amount can be uniformly distributed during cutting, the cutting efficiency is improved, meanwhile, tipping during cutting is avoided to the greatest extent, and the service life of a product is prolonged; due to the design of the centripetal angle and the circumferential angle, the friction of the tooth side face to the workpiece is reduced, the cutting resistance is remarkably reduced, the temperature of the workpiece is reduced, and it is guaranteed that the cutting face of the workpiece such as wood, aluminum and plastic is smooth and free of focal marks.

Description

Technical Field

[0001] This utility model relates to the field of cutting technology, specifically a carbide circular saw blade for ring saws. Background Technology

[0002] A trestle is a tool used for cutting hard materials such as wood, aluminum, plastic, brick, and stone. It is characterized by high efficiency, safety, and portability. With the rapid development of the global construction, furniture, and stone industries, the market demand for trestle continues to grow. Currently, trestle has made significant progress in cutting efficiency, cutting precision, and durability, providing strong support for production in related industries.

[0003] However, most of the circular saw blades that are compatible with ring saws are currently diamond circular saw blades. Diamond circular saw blades involve both cutting and grinding during the cutting process, which generates a lot of heat and conducts it to the workpiece, resulting in a very high temperature. Therefore, they are only suitable for cutting bricks, stones, etc., and are not very suitable for cutting wood, aluminum, plastics, etc., which seriously limits the application range of ring saws.

[0004] Therefore, there is an urgent need for a carbide circular saw blade for ring saws to solve the above problems. Utility Model Content

[0005] The purpose of this utility model embodiment is to provide a carbide circular saw blade for ring saws to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A carbide circular saw blade for a ring saw includes: a ring saw body, wherein the ring saw body is provided with a plurality of sets of saw teeth, the plurality of sets of saw teeth being equally spaced and arranged in a circle, each set of saw teeth consisting of a set of left oblique teeth, a set of right oblique teeth and a set of pointed teeth, the right oblique teeth being located between the left oblique teeth and the pointed teeth, the principal cutting angle ε of the left oblique teeth and the right oblique teeth being 5°, the principal cutting angle ε of the pointed teeth being 15°, and being symmetrically designed for left and right obliques, the sides of the left oblique teeth, the right oblique teeth and the pointed teeth being designed with a centripetal angle Tp of 1° and a circumferential angle Tr of 3°.

[0008] As a further aspect of this utility model, the saw teeth are made of cemented carbide material.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] 1. The saw teeth are made of cemented carbide material, which has extremely high impact resistance and is suitable for cutting materials such as wood, aluminum, and plastic;

[0011] 2. The design of the main cutting angle can evenly distribute the cutting amount during cutting, improving cutting efficiency while minimizing the risk of chipping during cutting and extending the product's service life.

[0012] 3. The design of the centripetal and circumferential angles reduces the friction between the tooth flanks and the workpiece, significantly reducing cutting resistance and workpiece temperature, ensuring that the cut surfaces of workpieces such as wood, aluminum, and plastic are smooth and free of scorch marks. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a carbide circular saw blade for a ring saw in an embodiment of this utility model.

[0014] Figure 2 This is a top view of the saw teeth in an embodiment of this utility model.

[0015] Figure 3 This is a side view of the left helical tooth in an embodiment of this utility model.

[0016] Figure 4 This is a side view of the right helical tooth in an embodiment of this utility model.

[0017] Figure 5 This is a side view of the pointed tooth in an embodiment of the present invention.

[0018] In the diagram: 1. Left oblique tooth; 2. Right oblique tooth; 3. Pointed tooth; 4. Ring saw body. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In this embodiment of the utility model, please refer to Figures 1 to 5 A carbide circular saw blade for a ring saw includes: a ring saw body 4, on which a plurality of sets of saw teeth are provided, the plurality of sets of saw teeth being equally spaced and arranged in a circle, each set of saw teeth consisting of a set of left oblique teeth 1, a set of right oblique teeth 2 and a set of pointed teeth 3, the right oblique teeth 2 being located between the left oblique teeth 1 and the pointed teeth 3, the principal cutting angle ε of the left oblique teeth 1 and the right oblique teeth 2 being 5°, the principal cutting angle ε of the pointed teeth 3 being 15°, and being symmetrically designed for left and right obliques, the sides of the left oblique teeth 1, the right oblique teeth 2 and the pointed teeth 3 being designed with a centripetal angle Tp of 1° and a circumferential angle Tr of 3°.

[0021] The design of the main cutting angle ε allows the left oblique tooth 1, right oblique tooth 2, and pointed tooth 3 to each perform their respective duties and evenly distribute the cutting amount during the cutting operation. This improves cutting efficiency while minimizing the risk of chipping during cutting, thereby extending the product's service life.

[0022] The design of the centripetal and circumferential angles reduces the friction between the toothed surfaces and the workpiece during cutting operations. Compared to diamond circular saw blades which lack centripetal and circumferential angles, this design significantly reduces cutting resistance and lowers workpiece temperature, ensuring smooth cut surfaces and no scorch marks on wood, aluminum, plastic, and other workpieces.

[0023] In this embodiment, the saw teeth are provided in 21 sets.

[0024] In one embodiment of this utility model, the saw teeth are made of cemented carbide material.

[0025] In this invention, the material of the saw teeth is replaced by cemented carbide instead of the popular diamond material. This cemented carbide is made by pressure sintering tungsten carbide with 12% cobalt. The grain size is between 1.2 and 1.6 μm, which has extremely high impact resistance and is suitable for handheld cutting where the ring saw is unstable.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A hard metal circular saw blade for a ring saw, comprising: Ring saw body, which is provided with a plurality of groups of saw teeth, characterized in that the plurality of groups of saw teeth are arranged in a circle at equal intervals, one group of saw teeth is composed of a group of left oblique teeth, a group of right oblique teeth and a group of sharp teeth, the right oblique teeth are located between the left oblique teeth and the sharp teeth, the main rake angle ε of the left oblique teeth and the right oblique teeth is 5°, the main rake angle ε of the sharp teeth is 15°, and the left oblique teeth and the right oblique teeth are symmetrically designed, the side surface of the left oblique teeth, the right oblique teeth and the sharp teeth are designed with a centripetal angle Tp of 1° and a circumferential angle Tr of 3°.

2. A hard metal circular saw blade for a ring saw according to claim 1, characterized in that The saw teeth are prepared from a hard alloy material.

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