Bamboo cross-cutting knife with wedge angle on cutting surface

Abstract

The invention relates to the technical field of circular saw blades, in particular to a bamboo cross section cutter for cutting a wedge angle of a face, which comprises a cutter head, a plurality of tooth holders are arranged around the edge of the cutter head, each tooth holder is connected with cutter teeth, all the cutter teeth comprise a plurality of tooth groups, each tooth group comprises at least one first helical tooth, and each first helical tooth is provided with at least one second helical tooth. The cutter head further comprises at least one second helical tooth, the cutting face of the first helical tooth is inclined relative to the axis of the cutter head, and the cutting face of the second helical tooth and the cutting face of the first helical tooth form a splayed shape or an inverted splayed shape. By arranging the first oblique teeth and the second oblique teeth, the cutting faces of the first oblique teeth and the second oblique teeth incline towards the two sides of the cutter head correspondingly, on the basis that a complete fracture is formed, the contact face with bamboo wood can be reduced, the sharp cutting effect can be achieved, cuttings can be rapidly discharged through the obliquely-arranged cutting faces, and the cutting efficiency is improved. And burrs of bamboo fractures are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circular saw blades, in particular to a bamboo cross-cutting knife with a cutting face wedge angle. BACKGROUND

[0002] The bamboo cross-cutting knife is widely used in bamboo furniture factories to cut bamboo into parts of a certain size. Since bamboo is highly fibrous along the grain and has high tensile strength, the traditional bamboo cross-cutting knife will produce a rough and uneven cut surface when cutting due to the large cutting surface.

[0003] Therefore, there is a need for a technical solution to solve the technical problem of the easy occurrence of rough and uneven cut surfaces during bamboo cutting. SUMMARY

[0004] The present application aims to overcome the technical problem of the easy occurrence of rough and uneven cut surfaces during bamboo cutting in the prior art and provides a bamboo cross-cutting knife with a cutting face wedge angle.

[0005] The present application provides a bamboo cross-cutting knife with a cutting face wedge angle, comprising a cutter head, a plurality of tooth seats are arranged around the edge of the cutter head, each tooth seat is connected with a cutter tooth, all the cutter teeth comprise a plurality of tooth groups, each tooth group comprises at least one first bevel gear and at least one second bevel gear, the cutting face of the first bevel gear is inclined to the axis of the cutter head, and the cutting face of the second bevel gear forms an "eight" shape or an inverted "eight" shape with the cutting face of the first bevel gear.

[0006] The present application provides a bamboo cross-cutting knife with a cutting face wedge angle, comprising a cutter head, a plurality of tooth seats are arranged around the edge of the cutter head, each tooth seat is connected with a cutter tooth, all the cutter teeth comprise a plurality of tooth groups, each tooth group comprises at least one first bevel gear and at least one second bevel gear, the cutting face of the first bevel gear is inclined to the axis of the cutter head, and the cutting face of the second bevel gear forms an "eight" shape or an inverted "eight" shape with the cutting face of the first bevel gear.

[0007] Preferably, the included angle between the cutting face of the first bevel gear and the axis of the cutter head is α, the included angle between the cutting face of the second bevel gear and the axis of the cutter head is β, 3°≤α≤7°, and 3°≤β≤7°.

[0008] The included angle between the first and second bevel teeth and the axis of the cutter head is set to be greater than 3°, which ensures that the cutting surface and the bamboo material form sufficient chip space and guarantees the chip removal efficiency, and the included angle between the first and second bevel teeth and the axis of the cutter head is set to be less than 7°, which ensures that the inclined cutting surface can contact the bamboo material for effective cutting.

[0009] Preferably, the alpha is set to 5° and the beta is set to 5°.

[0010] The included angle between the first and second bevel teeth and the axis of the cutter head is set to be greater than 3°, which ensures that the cutting surface and the bamboo material form sufficient chip space and guarantees the chip removal efficiency, and the included angle between the first and second bevel teeth and the axis of the cutter head is set to be less than 7°, which ensures that the inclined cutting surface can contact the bamboo material for effective cutting.

[0011] Preferably, in one of the tooth groups, the first and second bevel teeth are arranged alternately.

[0012] The first and second bevel teeth are matched more closely, further avoiding the generation of excess material.

[0013] Preferably, the tooth group further comprises at least one flat tooth, and the cutting surface of the flat tooth is arranged parallel to the axis of the cutter head.

[0014] By adding a flat tooth to the tooth group, the burrs generated during the cutting of the first and second bevel teeth can be removed, further improving the cutting quality.

[0015] Preferably, in one of the tooth groups, the number of the first and second bevel teeth is two, and the number of the flat tooth is one.

[0016] The function of the flat tooth is to remove the burrs generated during the cutting of the first and second bevel teeth, and the purpose is not to participate in the cutting. At the same time, too many flat teeth will also affect the sharpness of the cutting and the chip removal efficiency. Therefore, one flat tooth is arranged in every five cutter teeth, which not only maintains good cutting effect, but also corrects the burrs and local incomplete cutting during the cutting of the first and second bevel teeth.

[0017] Preferably, in one of the tooth groups, all the cutter teeth are arranged in the order of flat tooth, second bevel tooth, first bevel tooth, second bevel tooth, and first bevel tooth along the rotation direction of the cutter head.

[0018] That is, after the first and second bevel teeth cut the bamboo material, the flat tooth is used to correct the fracture, which not only realizes efficient cutting and rapid chip removal, but also further reduces the burrs at the fracture.

[0019] Preferably, the cutting surfaces of the first, second, and flat teeth are covered with a diamond composite layer.

[0020] The diamond composite layer has very strong wear resistance, and its micro-sharp structure can maintain more durable cutting ability, reduce cutting resistance, improve cutting efficiency, reduce burrs and edge collapse, especially in the present application, since the contact surface of the first and second inclined teeth with the bamboo is small, the diamond composite layer can strengthen the strength of the teeth, reduce the damage and wear of the teeth.

[0021] Compared with the prior art, the beneficial effects of the present application are: 1. The bamboo cross-cutting knife with cutting surface wedge angle provided by the present application sets the first inclined tooth and the second inclined tooth, and the cutting surfaces of the first inclined tooth and the second inclined tooth are inclined to the two sides of the cutter head, respectively. The first inclined tooth and the second inclined tooth arranged at an angle can reduce the contact surface with the bamboo, not only can get sharp cutting effect, but also can quickly discharge the cutting chips through the inclined cutting surface, reduce the burrs of the bamboo fracture; 2. The bamboo cross-cutting knife with cutting surface wedge angle provided by the present application, the first inclined tooth and the second inclined tooth cut the bamboo from the two sides of the fracture, respectively, to form a complete fracture on the bamboo, reducing the excess material at the fracture. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic diagram of the bamboo cross-cutting knife with cutting surface wedge angle of the present application; Figure 2 is Figure 1 the enlarged view of area A in Figure 3 is a schematic diagram of the tooth group of the present application; Figure 4 is a schematic diagram of the angle setting of the tooth group of the present application; Markings in the figure: 1-cutter head, 11-tooth seat, 2-tooth, 201-cutting surface, 21-tooth group, 211-first inclined tooth, 212-second inclined tooth, 213-flat tooth. DETAILED DESCRIPTION

[0023] The present application will be further described in detail below in combination with specific embodiments. However, this should not be understood as limiting the scope of the above-mentioned subject matter of the present application to the following examples only, and any technology realized based on the content of the present application falls within the scope of the present application.

[0024] In the description of the embodiments of the present application, the terms of orientation or positional relationship such as "upper", "lower", "left", "right", "center", "inner", "outer" and the like are expressed based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship in which the product / device / apparatus of the present application is usually used, unless otherwise specified. These terms of orientation or positional relationship are only for the convenience of describing the present application or simplifying the description in the embodiments, facilitating the quick understanding of the scheme by the skilled in the art, and thus cannot be understood as indicating or implying that a specific device / component / element must have a specific orientation or be constructed and operated in a specific positional relationship, and therefore cannot be understood as a limitation on the present application.

[0025] In addition, the terms "horizontal", "vertical", "overhanging", "parallel" and the like do not mean that the corresponding device / component / element must be absolutely horizontal or vertical or overhanging or parallel, but can be slightly inclined or deviated. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. Alternatively, it can be simplified to mean that the corresponding device / component / element is arranged in the direction of "horizontal", "vertical", "overhanging", "parallel" and the like, and can have an error / deviation of ±10% relative to the corresponding direction, more preferably an error / deviation of ±8% or less, more preferably an error / deviation of ±6% or less, more preferably an error / deviation of ±5% or less, and more preferably an error / deviation of ±4% or less. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the scheme of the present application.

[0026] In addition, the terms "first", "second", "third" and the like in the description of the embodiments of the present application are only used to distinguish the same or similar components for description, and should not be understood as emphasizing or implying the relative importance of the specific components.

[0027] In addition, in the description of the embodiments of the present application, "several", "a plurality of", "several" represent at least 2. It can be 2, 3, 4, 5, 6, 7, 8, 9, etc. in any case, and even more than 9.

[0028] In addition, in the description of the technical scheme of the present application, unless otherwise specified / limited / limited, the terms "arrangement", "installation", "connection", "connection", "provided with", "laid", "arrangement" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected, such as welding, riveting, bolting, screwing and other commonly used connection means in the art. The connection can be mechanical connection, electrical connection or communication connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the communication between two elements. Example 1

[0029] As Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, a bamboo cross-cutting tool with cutting surface 201 wedge angle, comprising a cutter head 1, the edge of the cutter head 1 is provided with a plurality of tooth seats 11, each of the tooth seats 11 is connected with a cutter tooth 2, all of the cutter teeth 2 comprise a plurality of tooth groups 21, each of the tooth groups 21 comprises at least one first inclined tooth 211 and at least one second inclined tooth 212, the cutting surface 201 of the first inclined tooth 211 is inclined to the axis of the cutter head 1, and the cutting surface 201 of the second inclined tooth 212 forms an "eight" shape or an inverted "eight" shape with the cutting surface 201 of the first inclined tooth 211.

[0030] In use, the rotation of the cutter head 1 drives the tooth seats 11 and the cutter teeth 2 connected with the tooth seats 11 to move, thereby cutting the bamboo, the cutter teeth 2 are formed by a plurality of tooth groups 21, each of the tooth groups 21 contains a first inclined tooth 211 and a second inclined tooth 212, the cutting surface 201 of the second inclined tooth 212 forms an "eight" shape or an inverted "eight" shape with the cutting surface 201 of the first inclined tooth 211, that is, the cutting surface 201 of the first inclined tooth 211 and the cutting surface 201 of the second inclined tooth 212 are inclined in different directions, the cutting surface 201 of the first inclined tooth 211 and the cutting surface 201 of the second inclined tooth 212 are respectively inclined to the two sides of the cutter head 1, the first inclined tooth 211 and the second inclined tooth 212 arranged in an inclined manner can reduce the contact surface with the bamboo, not only can obtain a sharp cutting effect, but also the cutting chips can be quickly discharged through the inclined cutting surface 201, thereby reducing the burrs at the broken end of the bamboo, and the first inclined tooth 211 and the second inclined tooth 212 respectively cut the bamboo from the two sides of the broken end to form a complete broken end on the bamboo, thereby reducing the excess material at the broken end.

[0031] The first inclined tooth 211 and the second inclined tooth 212: the included angle between the cutting surface 201 of the first inclined tooth 211 and the axis of the cutter head 1 is α, the included angle between the cutting surface 201 of the second inclined tooth 212 and the axis of the cutter head 1 is β, 3°≤α≤7°, 3°≤β≤7°, the included angle between the first inclined tooth 211 and the second inclined tooth 212 and the axis of the cutter head 1 is greater than 3°, which ensures that the cutting surface 201 and the bamboo form sufficient chip space, thereby ensuring the chip removal efficiency, and the included angle between the first inclined tooth 211 and the second inclined tooth 212 and the axis of the cutter head 1 is less than 7°, which ensures that the inclined cutting surface 201 can contact the bamboo for effective cutting, in the embodiment, α and β are preferably 5°.

[0032] Further, in one of the tooth groups 21, the first inclined tooth 211 and the second inclined tooth 212 are arranged alternately, so that the first inclined tooth 211 and the second inclined tooth 212 cooperate more closely, and further avoid the generation of excess material.

[0033] Further, the cutting surfaces 201 of the first and second inclined teeth 211 and 212 are each provided with a diamond composite layer, which has very strong wear resistance and can maintain a more durable cutting ability, reduce cutting resistance, improve cutting efficiency, and reduce burrs and edge collapse. Embodiment 2

[0034] As shown in Figure 1 , Figure 2 and Figure 3 , the difference between this embodiment and Embodiment 1 is that the tooth group 21 further includes at least one flat tooth 213, and the cutting surface 201 of the flat tooth 213 is arranged parallel to the axis of the cutter head 1.

[0035] In this embodiment, by adding the flat tooth 213 to the tooth group 21, the burrs remaining during the cutting of the first and second inclined teeth 211 and 212 can be removed, further improving the cutting quality.

[0036] Specifically, in one tooth group 21, the number of first and second inclined teeth 211 and 212 is two, and the number of flat teeth 213 is one. The flat tooth 213 is used to remove the burrs generated during the cutting of the first and second inclined teeth 211 and 212, and is not intended to participate in the cutting. In addition, too many flat teeth 213 will also affect the sharpness of the cutting and the efficiency of the chip removal. Therefore, one flat tooth 213 is arranged in every five cutter teeth 2, which can not only maintain good cutting effect, but also correct the burrs and local incomplete cutting during the cutting of the first and second inclined teeth 211 and 212.

[0037] Further, in one tooth group 21, all the cutter teeth 2 are arranged in the order of flat tooth 213, second inclined tooth 212, first inclined tooth 211, second inclined tooth 212, and first inclined tooth 211 along the rotation direction of the cutter head 1, that is, after the first and second inclined teeth 211 and 212 cut the bamboo, the flat tooth 213 is used to correct the fracture. This not only realizes efficient cutting and rapid chip removal, but also further reduces the burrs at the fracture.

[0038] Further, the cutting surfaces 201 of the flat teeth 213 are each provided with a diamond composite layer, which has very strong wear resistance and can maintain a more durable cutting ability, reduce cutting resistance, improve cutting efficiency, and reduce burrs and edge collapse.

[0039] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A cross-cutting knife for bamboo with a wedge-shaped cutting surface, characterized in that, The tool includes a cutter head (1), and a plurality of tooth seats (11) are arranged around the edge of the cutter head (1). Each tooth seat (11) is connected with a cutting tooth (2). All the cutting teeth (2) include a plurality of tooth groups (21). Each tooth group (21) includes at least one first helical tooth (211) and at least one second helical tooth (212). The cutting surface (201) of the first helical tooth (211) is inclined to the axis of the cutter head (1). The cutting surface (201) of the second helical tooth (212) and the cutting surface (201) of the first helical tooth (211) form a figure-eight or an inverted figure-eight.

2. The bamboo cross-section cutting knife with a wedge-shaped cutting surface according to claim 1, characterized in that, The angle between the cutting surface (201) of the first helical tooth (211) and the axis of the cutter head (1) is α, and the angle between the cutting surface (201) of the second helical tooth (212) and the axis of the cutter head (1) is β, 3°≤α≤7°, 3°≤β≤7°.

3. A bamboo cross-section cutting knife with a wedge-shaped cutting surface according to claim 2, characterized in that, The α is set to 5°, and the β is set to 5°.

4. A bamboo cross-section cutting knife with a wedge-shaped cutting surface according to claim 1, characterized in that, In one of the tooth groups (21), the first helical tooth (211) and the second helical tooth (212) are alternately arranged.

5. A bamboo cross-section cutting knife with a wedge-shaped cutting surface according to any one of claims 1-4, characterized in that, The gear assembly (21) also includes at least one flat tooth (213), the cutting surface (201) of which is arranged parallel to the axis of the cutter head (1).

6. A bamboo cross-section cutting knife with a wedge-shaped cutting surface according to claim 5, characterized in that, In one of the tooth groups (21), there are two of each of the first helical tooth (211) and the second helical tooth (212), and one of each of the flat tooth (213).

7. A bamboo cross-section cutting knife with a wedge-shaped cutting surface according to claim 6, characterized in that, In one of the tooth groups (21), along the rotation direction of the cutter head (1), all the cutter teeth (2) are arranged in the order of flat tooth (213), second helical tooth (212), first helical tooth (211), second helical tooth (212) and first helical tooth (211).

8. A bamboo cross-section cutting knife with a wedge-shaped cutting surface according to claim 5, characterized in that, The cutting surfaces (201) of the first helical tooth (211), the second helical tooth (212), and the flat tooth (213) are all covered with a diamond composite layer.

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