Circular saw blade

Abstract

The utility model provides a circular saw blade, and belongs to the technical field of machinery. The problem that an existing circular saw blade is poor in stability is solved. The circular saw blade comprises tool bits and a disc-shaped base body, a plurality of protruding tool aprons are arranged on the outer edge of the base body, the tool aprons are evenly distributed in the circumferential direction of the outer edge of the base body, the tool bits are fixedly connected to the tool aprons, and the circular saw blade is characterized in that concave positioning notches are formed in one sides of the tool aprons, and the tool bits are matched with the positioning notches and connected to the positioning notches. The upper end of the tool bit extends out of the tool apron, the lower end of the tool bit is a first positioning edge, the inner side of the tool bit is a second positioning edge, the first positioning edge is connected to the bottom of the positioning notch, and the second positioning edge is connected to the side portion of the positioning notch. The circular saw blade has the advantages of high strength, compact structure, high stability and good cutting performance.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery and relates to a circular saw blade. Background Art

[0002] As a cutting tool, circular saw blades are widely used in the processing of stone, wood, ceramics, metal and other materials. Their structural characteristics are thin saw body and many teeth. At the same time, since the hardness of the workpieces cut by circular saw blades is generally large and the force during operation is very complex, there are very high requirements for the strength and cutting performance of circular saw blades.

[0003] In order to improve the cutting performance of circular saw blades, a cutter head with relatively high strength is usually fixed to the edge of a disc-shaped circular saw blade base. The cutter head of the existing circular saw blade is fixed to the edge of the base by welding and the cutter heads are evenly distributed circumferentially along the edge of the base. However, the contact area between the cutter head and the base is small, the connection strength is limited, and its stability is poor.

[0004] A Chinese patent with publication number CN202097849U discloses a parallelogram-shaped diamond circular saw blade, comprising a cutter head and a substrate; the diamond cutter head is in a segmented block shape and connected to the periphery of the substrate; the cross-sectional shape of the cutter head is a parallelogram; the periphery of the substrate is provided with an inclined surface with the same inclination angle as the cutter head; the inclined side surface of the cutter head coincides with the inclined surface of the periphery of the substrate.

[0005] The circular saw blade of the above patent has enhanced the strength, cutting performance and service life of the circular saw blade to a certain extent. However, since the thickness of the cutter head is greater than the thickness of the base, the cutter head and the base are directly connected by welding, there are still problems such as large cutting resistance, a large amount of workpiece body cut off, and poor stability of the connection between the cutter head and the base. Summary of the invention

[0006] The purpose of the utility model is to provide a circular saw blade with compact structure and high stability in view of the above problems existing in the prior art.

[0007] The purpose of the utility model can be achieved through the following technical solutions:

[0008] A circular saw blade comprises a cutter head and a disc-shaped base, wherein the outer edge of the base is provided with a plurality of protruding cutter seats, the cutter seats are evenly distributed circumferentially along the outer edge of the base, the cutter head is fixedly connected to the cutter seat, and is characterized in that one side of the cutter seat is provided with a concave positioning recess, the cutter head matches the positioning recess and the cutter head is connected to the positioning recess, the upper end of the cutter head extends out of the cutter seat, the lower end of the cutter head is a first positioning edge, the inner side of the cutter head is a second positioning edge, the first positioning edge is connected to the bottom of the positioning recess, the second positioning edge is connected to the side of the positioning recess, the cutter head is made of metal material A, the base is made of metal material B, and the strength of the metal material A is greater than the strength of the metal material B.

[0009] The cutter head of the circular saw blade is of irregular shape, and a positioning recess matching the cutter head is provided on each cutter seat. The cutter head can be embedded in the positioning recess. Such a structure increases the contact area between the cutter head and the base, and improves the connection stability. At the same time, the upper end of the cutter head extends out of the cutter seat to ensure that the entire circular saw blade can perform cutting operations stably. In addition, the strength of the cutter head is greater than the strength of the base, which enhances the cutting performance of the circular saw blade.

[0010] Positioning edge one is connected to the bottom of the positioning recess, and positioning edge two is connected to the side of the positioning recess, which increases the contact area between the cutter head and the cutter seat, enhances the connection strength, and improves the stability. Moreover, such a structure enables the cutter seat to support the cutter head during the circular saw blade cutting operation, thereby increasing the cutting speed of the circular saw blade while ensuring its stability.

[0011] In the above circular saw blade, the inner end of the cutter head is fixedly connected to the positioning notch by welding.

[0012] The welding material is filled between the cutter head and the positioning notch, so that the cutter head is stably connected to the cutter seat. In addition, the cutter seat can also support the cutter head during the circular saw blade cutting operation to avoid excessive load on the cutter head.

[0013] In the above circular saw blade, the connection between the first positioning edge and the second positioning edge has a transition portion 1 with a smooth transition.

[0014] The setting of the transition portion 1 increases the contact area between the cutter head and the positioning notch, making the welding connection more stable, improving the compactness of the overall structure of the circular saw blade, and at the same time avoiding contact between the cutter seat and the workpiece to be cut as much as possible.

[0015] In the above circular saw blade, the angle between the first positioning edge and the second positioning edge is less than 90 degrees.

[0016] Such a structure makes the included angle of the matching positioning recess smaller than 90 degrees, and the positioning recess effectively limits the cutter head, further making the connection between the cutter head and the cutter seat more stable.

[0017] In the above circular saw blade, the transition portion 1 is the rounded corners of the positioning edge 1 and the positioning edge 2.

[0018] The transition portion of the arc surface increases the contact area between the cutter head and the positioning recess, and the connection between the two can be filled with more welding material, effectively improving the connection strength between the cutter head and the cutter seat.

[0019] In the above circular saw blade, the depth dimension of the positioning recess is 1 / 4-1 / 2 of the height dimension of the blade seat.

[0020] Such a structure can not only ensure the stable connection between the cutter head and the positioning recess, but also shorten the size of the cutter head as much as possible and appropriately reduce the production cost.

[0021] In the above circular saw blade, the length of the upper end of the blade head extending out of the blade seat is 1 / 5-1 / 3 of the size of the positioning notch.

[0022] This structure enables the upper end of the cutter head to extend slightly out of the cutter seat, thereby minimizing contact between the cutter seat and the workpiece being cut while ensuring strength and cutting performance.

[0023] In the above circular saw blade, the upper portion of the outer side of the cutter head has an arc-shaped notch, and the lower portion of the outer side of the cutter head is in a straight line.

[0024] In the above circular saw blade, the length of the arc-shaped notch is 1 / 2 to 2 / 3 of the blade head.

[0025] The setting of the arc-shaped notch improves the strength of the cutter head, and at the same time makes the positioning of the workpiece to be cut more stable during the circular saw blade cutting operation, and is not easy to shift, thereby improving the cutting stability of the circular saw blade.

[0026] In the above circular saw blade, the connection between the upper end of the blade head and the arc-shaped notch has a transition portion 2 with a smooth transition.

[0027] The second transition portion is the rounded corner between the upper end of the cutter head and the arc-shaped notch. The setting of the second transition portion improves the strength of the cutter head and protects the safety of personnel when taking the circular saw blade to a certain extent.

[0028] Compared with the prior art, the metal material strength of the cutter head of the circular saw blade is greater than that of the base, thereby enhancing the strength and cutting performance of the circular saw blade; due to the setting of the positioning recess, the contact area between the cutter head and the cutter seat is larger, and the strength and connection stability are high after welding; the structure of the cutter head and the upper end of the cutter head slightly extending out of the cutter seat make the entire circular saw blade not only compact in structure, but also effectively avoid contact between the cutter seat and the workpiece being cut, thereby extending the service life of the circular saw blade and protecting personnel safety to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the utility model;

[0030] Figure 2 It is a structural schematic diagram of the cutter head in the utility model.

[0031] In the figure, 1, tool head; 1a, positioning edge 1; 1b, positioning edge 2; 1c, transition portion 1; 1d, arc-shaped recess; 1e, transition portion 2; 2, base; 2a, tool holder; 2a1 positioning recess. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly mounted on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more related listed items.

[0035] like Figure 1-2 As shown, the circular saw blade includes a cutter head 1 and a disc-shaped base 2, the outer edge of the base 2 is provided with a plurality of protruding cutter seats 2a, the cutter seats 2a are uniformly distributed along the circumference of the outer edge of the base 2, the cutter head 1 is fixedly connected to the cutter seat 2a, one side of the cutter seat 2a is provided with a concave positioning recess 2a1, the cutter head 1 matches the positioning recess 2a1 and the cutter head 1 is connected to the positioning recess 2a1, the upper end of the cutter head 1 extends out of the cutter seat 2a, the lower end of the cutter head 1 is a positioning edge 1a, the inner side of the cutter head 1 is a positioning edge 2 1b, the positioning edge 1 1a is connected to the bottom of the positioning recess 2a1, the positioning edge 2 1b is connected to the side of the positioning recess 2a1, the cutter head 1 is made of metal material A, the base 2 is made of metal material B, the strength of the metal material A is greater than the strength of the metal material B.

[0036] The inner end of the cutter head 1 is fixedly connected to the positioning recess 2a1 by welding.

[0037] The connection between the positioning edge 1a and the positioning edge 2 1b has a transition portion 1c with a smooth transition.

[0038] The included angle between the first positioning edge 1a and the second positioning edge 1b is less than 90 degrees.

[0039] The transition portion 1c is a rounded corner of the positioning edge 1a and the positioning edge 2 1b.

[0040] The depth dimension of the positioning recess 2a1 is 1 / 4 to 1 / 2 of the height dimension of the knife seat 2a.

[0041] The length of the upper end of the cutter head 1 extending out of the cutter seat 2a is 1 / 5 to 1 / 3 of the size of the positioning recess 2a1.

[0042] The upper portion of the outer side of the cutter head 1 has an arc-shaped notch 1d, and the lower portion of the outer side of the cutter head 1 is in a straight line.

[0043] The connection between the upper end of the cutter head 1 and the arc-shaped notch 1d has a smoothly transitioning transition portion 1e.

[0044] The length of the arc-shaped notch 1d is 1 / 2 to 2 / 3 of the cutter head 1.

[0045] The cutter head 1 of the circular saw blade is of irregular shape, and a positioning recess 2a1 matching the cutter head 1 is provided on each cutter seat 2a. Such a structure increases the contact area between the cutter head 1 and the cutter seat 2a. The cutter head 1 is connected to the positioning recess 2a1 by welding, and the welding material is filled between the cutter head 1 and the positioning recess 2a1, so that the cutter head 1 is stably connected to the cutter seat 2a, thereby improving the compactness of the overall structure of the circular saw blade. The positioning recess 2a1 on the outside of the cutter head 1 and the upper end of the cutter head 1 extending out of the cutter seat 2a can ensure that the entire circular saw blade can perform cutting operations stably while minimizing the contact between the cutter seat 2a and the workpiece to be cut. Moreover, the cutter seat 2a can also support the cutter head 1 during the cutting operation of the circular saw blade to avoid excessive load on the cutter head 1. At the same time, the strength of the cutter head 1 is greater than that of the base 2, which also enhances the cutting performance of the circular saw blade and prolongs the service life of the circular saw blade to a certain extent.

[0046] This circular saw blade is used for cutting metal. The surface of the blade head is coated with zirconium oxide, which can cut metal materials that are difficult to cut with ordinary circular saw blades.

[0047] In this embodiment, the coating thickness is 0.001-0.005 mm, and the coating width extending from the cutting portion of the cutter head to the rear thereof is 5-7 mm.

[0048] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. As long as they are within the spirit of the present invention, appropriate changes and modifications to the above embodiments are within the scope of protection required by the present invention.

Claims

1. A circular saw blade, comprising a cutter head and a disc-shaped base, wherein the base has a plurality of protruding cutter seats at the outer edge thereof, the cutter seats are uniformly distributed along the outer edge thereof in the circumferential direction, the cutter head is fixedly connected to the cutter seats, and the cutter head is characterized in that: One side of the knife seat has a concave positioning notch, the knife head matches the positioning notch and is connected to the positioning notch, the upper end of the knife head extends out of the knife seat, the lower end of the knife head is a positioning edge 1, the inner side of the knife head is a positioning edge 2, the positioning edge 1 is connected to the bottom of the positioning notch, and the positioning edge 2 is connected to the side of the positioning notch, the knife head is made of metal material A, the substrate is made of metal material B, and the strength of the metal material A is greater than the strength of the metal material B; The lower end of the cutter head is fixedly connected to the positioning notch by welding; The connection between the first positioning edge and the second positioning edge has a transition portion 1 with a smooth transition; The included angle between the first positioning edge and the second positioning edge is less than 90 degrees; The transition portion 1 is a rounded corner of the positioning edge 1 and the positioning edge 2; The depth of the positioning notch is 1 / 4 to 1 / 2 of the height of the knife seat; The length of the upper end of the cutter head extending out of the cutter seat is 1 / 5 to 1 / 3 of the size of the positioning notch; The upper part of the outer side of the cutter head is provided with an arc-shaped notch, and the lower part of the outer side of the cutter head is in a straight line shape.

2. The circular saw blade according to claim 1, characterized in that The length of the arc-shaped notch is 1 / 2 to 2 / 3 of the cutter head.

3. The circular saw blade according to claim 2, characterized in that The connection between the upper end of the cutter head and the arc-shaped notch is provided with a transition portion 2 with a smooth transition.

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