Single-side double-step composite silencing saw blade base body

Abstract

The utility model discloses a single-side double-step composite noise reduction saw blade base body which comprises two saw blade base bodies arranged oppositely, a damping medium layer is clamped between the two saw blade base bodies and matched with the two saw blade base bodies to form a sandwich structure, and the damping medium layer and the saw blade base bodies are concentric and coaxial. A first saw blade protrusion is concentrically and coaxially arranged on the side, away from the damping medium layer, of the saw blade base body on one side, a second saw blade protrusion is concentrically and coaxially arranged on the side, away from the saw blade base body, of the first saw blade protrusion, and the second saw blade protrusion and the first saw blade protrusion are matched to form a double-step-shaped structure. And meanwhile, the use rigidity and the strength of a base body are guaranteed, the cutting resistance is reduced, deslagging is facilitated, and the cutting requirements of brittle materials such as rock plates are met.

Description

Technical Field

[0001] The utility model relates to the technical field of saw blade production, in particular to a single-sided double-step composite sound-absorbing saw blade substrate. Background Art

[0002] The traditional step composite silencer is composed of two steel plates of unequal thickness with a copper sheet sandwiched between them and welded together. The copper sheet acts as a damping medium to reduce noise. At present, due to the needs of the cutting object, it is necessary to ensure that the saw blade base welding head part is not too thick, in order to save the cost of the diamond head, and at the same time, due to the different cutting objects, the rigidity of the saw blade base must be increased, so a step method is generally used.

[0003] However, the single-step method will have a certain cutting resistance when facing the cutting of brittle materials such as rock slabs. In order to better reduce the cutting resistance and the need to discharge slag in time, thereby reducing the stress deformation of the saw blade base during cutting, therefore, for the cutting of brittle materials such as rock slabs or thin plates, in order to further improve the quality of the cut plate and extend the service life of the step saw blade base, a saw blade base is needed to meet its needs.

[0004] There are currently saw blade bases with double-step structures on the market, in which steps are provided on both sides of the base. However, the thickness of the welding blade head is too thick for cutting thin brittle materials, so it does not meet the cutting requirements and has a poor cutting effect. Utility Model Content

[0005] The utility model provides a single-sided double-step composite silencer saw blade substrate, aiming to solve the above-mentioned problem of lack of a silencer saw blade with good rigidity and thin blade for brittle materials. The design adopts a continuous two-layer step structure for improvement and meets the above-mentioned requirements, which not only maintains the rigidity of the step composite saw blade substrate, but also does not increase the thickness of the blade head welding part, thereby reducing the cost of the blade head.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A single-sided double-step composite noise-absorbing saw blade substrate, comprising two saw blade substrates arranged opposite to each other, a damping medium layer sandwiched between the two saw blade substrates to form a sandwich structure, and the damping medium layer is concentric and coaxial with the saw blade substrate;

[0008] A first saw blade protrusion is coaxially provided on one side of the saw blade base away from the damping medium layer, and a second saw blade protrusion is coaxially provided on the side of the first saw blade protrusion away from the saw blade base. The second saw blade protrusion cooperates with the first saw blade protrusion to form a double-step structure.

[0009] Preferably, the second saw blade protrusion is integrally formed with the first saw blade protrusion.

[0010] As a more preferred embodiment, the first saw blade protrusion is integrally formed with the corresponding saw blade base.

[0011] Furthermore, the side surfaces of the first saw blade protrusion are inclined to form a chamfered structure, and the side surfaces of the second saw blade protrusion are inclined to form a chamfered structure.

[0012] Furthermore, central holes of the same size are provided at the middle positions of the saw blade base, the damping medium layer, the first saw blade protrusion and the second saw blade protrusion.

[0013] Specifically, a plurality of first welding points are arranged on the second saw blade protrusion at equal intervals around the central hole, and the second saw blade protrusion, the saw blade base and the damping medium layer are fixedly matched by spot welding at the first welding points;

[0014] A plurality of second welding points are arranged on the first saw blade protrusion at equal intervals around the second saw blade protrusion, and the first saw blade protrusion, the saw blade base and the damping medium layer are fixedly matched by spot welding at the second welding points;

[0015] A plurality of third welding points are arranged on the saw blade base at equal intervals around the first saw blade protrusion, and the saw blade base and the damping medium layer are fixedly matched by spot welding at the third welding points to form a sandwich structure.

[0016] More specifically, the radius of the damping medium layer is the same as the radius of the saw blade base, the radius of the first saw blade protrusion is smaller than the radius of the saw blade base, and the radius of the second saw blade protrusion is smaller than the radius of the first saw blade protrusion.

[0017] In detail, the periphery of the saw blade base and the damping medium layer are both provided with a plurality of narrow key slots at equal intervals around the central axis, and the narrow key slots on the saw blade base correspond to and overlap with the narrow key slots of the damping medium layer one by one, and there is a gap between the end of the narrow key slot and the first saw blade protrusion.

[0018] In more detail, the damping medium layer 3 is a copper sheet.

[0019] Beneficial effects of the utility model:

[0020] The utility model provides a double-step structure formed by a first saw blade protrusion and a second saw blade protrusion on a single side. Compared with a single-sided single-step saw blade and a double-sided double-step saw blade, the utility model can meet the structural requirements of a thinner blade portion and maintained thickness in the middle without changing the thickness. It is suitable for cutting brittle materials while maintaining the rigidity of the saw blade. The saw blade base forms a sandwich structure with the damping medium layer to ensure the soundproofing effect. The design adopts a continuous two-layer step structure for improvement and meets the above requirements, which not only maintains the rigidity of the step composite saw blade base, but also does not increase the thickness of the blade head welding point, thereby reducing the cost of the blade head. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0022] Figure 2 This is a disassembly diagram of the utility model;

[0023] Figure 3 It is a main schematic diagram of the utility model;

[0024] In the figure: 1. saw blade base; 2. first saw blade protrusion; 3. second saw blade protrusion; 4. damping medium layer; 5. narrow key slot; 6. first welding point; 7. second welding point; 8. third welding point; 9. center hole. DETAILED DESCRIPTION

[0025] As follows, embodiments are further described with reference to the accompanying drawings.

[0026] like Figure 1~Figure 3 As shown, as a preferred embodiment 1, a single-sided double-step composite noise-absorbing saw blade substrate comprises two saw blade substrates 1 arranged opposite to each other, a damping medium layer 4 is sandwiched between the two saw blade substrates 1 to form a sandwich structure, and the damping medium layer 4 is concentric and coaxial with the saw blade substrate 1;

[0027] A first saw blade protrusion 2 is coaxially and concentrically provided on one side of the saw blade base 1 away from the damping medium layer 4, and a second saw blade protrusion 3 is coaxially and concentrically provided on the side of the first saw blade protrusion 2 away from the saw blade base 1. The second saw blade protrusion 3 cooperates with the first saw blade protrusion 2 to form a double-step structure.

[0028] Embodiment 1 provides a single-sided double-step composite sound-absorbing saw blade substrate, the substrate is formed by sandwiching a damping medium layer 4 between two saw blade substrates 1 to form a sandwich structure, thereby forming a saw blade substrate with a sound-absorbing function, and a double-step structure formed by the second saw blade protrusion 3 and the first saw blade protrusion 2 is arranged on the saw blade substrate 1 on one side. Compared with the existing single saw blade protrusion, the saw blade protrusion is made into a double-step second saw blade protrusion 3 and a first saw blade protrusion 2 under the condition that the thickness of the saw blade protrusion remains unchanged. The first saw blade protrusion 2 is located on the saw blade substrate 1, and the size of the first saw blade protrusion 2 is larger than the second saw blade protrusion 3. Through the first saw blade protrusion 2, the substrate can further reduce the thickness of the blade head welding part, so that it is suitable for application scenarios where the cutting object requires a thinner blade or the cutting material is a brittle material. At the same time, the second saw blade protrusion 3 reduces the resistance of the saw blade substrate during cutting and is conducive to the need for slag removal, while ensuring the rigidity and strength of the substrate.

[0029] As a preferred embodiment 2, the second saw blade protrusion 3 is formed integrally with the first saw blade protrusion 2 to ensure the strength and rigidity in use.

[0030] As a preferred embodiment 3, the first saw blade protrusion 2 is integrally formed with the corresponding saw blade base 1 to ensure the strength and rigidity in use.

[0031] When processing and using, first prepare two saw blade bases 1 of unequal thickness, the thinner saw blade base 1 is used as the bottom saw blade base, and the thicker saw blade base 1 is used as the top saw blade base, and the steps are processed by two grindings. During processing, the first saw blade protrusion 2 is processed first, and then the second saw blade protrusion 3 is processed, and the processing allowances of the two grindings are reasonably controlled.

[0032] As a preferred embodiment 4, the side surface of the first saw blade protrusion 2 is inclined to form a chamfered structure, and the side surface of the second saw blade protrusion 3 is inclined to form a chamfered structure.

[0033] The inclined chamfer structure is mainly used to remove burrs and prevent stress concentration and cracks.

[0034] As a preferred embodiment 5, the side inclination angles of the first saw blade protrusion 2 and the second saw blade protrusion 3 are the same, which is easy to prepare.

[0035] As a preferred embodiment 6, center holes 9 of the same size are provided in the middle of the saw blade base 1, the damping medium layer 4, the first saw blade protrusion 2 and the second saw blade protrusion 3. The center hole 9 facilitates the installation of the main shaft.

[0036] As a preferred embodiment 7, a plurality of first welding points 6 are arranged at equal intervals around the central hole 9 on the second saw blade protrusion 3, and the second saw blade protrusion 3, the saw blade base 1 and the damping medium layer 4 are fixedly matched by spot welding at the first welding points 6;

[0037] A plurality of second welding points 7 are arranged at equal intervals on the first saw blade protrusion 2 around the second saw blade protrusion 3, and the first saw blade protrusion 2, the saw blade base 1 and the damping medium layer 4 are fixedly matched by spot welding at the second welding points 7;

[0038] A plurality of third welding points 8 are arranged at equal intervals on the saw blade base 1 around the first saw blade protrusion 2 , and the saw blade base 1 and the damping medium layer 4 are fixedly matched by spot welding at the third welding points 8 to form a sandwich structure.

[0039] Embodiment 7 provides a method for fixing the second saw blade protrusion 3, the first saw blade protrusion 2, the saw blade base 1 and the damping medium layer 4 by spot welding, and a welding point is provided on each diameter surface, and the first welding point 6, the second welding point 7 and the third welding point 8 are arranged in sequence from the second saw blade protrusion 3, the first saw blade protrusion 2 to the saw blade base 1. Because their overall thickness is uneven, thick in the middle and thin on the outside, the spot welding parameters at the first welding point 6, the second welding point 7 and the third welding point 8 are different from each other.

[0040] As a preferred embodiment 8, the radius of the damping medium layer 4 is the same as the radius of the saw blade base 1 , the radius of the first saw blade protrusion 2 is smaller than the radius of the saw blade base 1 , and the radius of the second saw blade protrusion 3 is smaller than the radius of the first saw blade protrusion 2 .

[0041] A double-step structure is ensured to facilitate scaling with thin outer side and thick middle.

[0042] As a preferred embodiment 9, the periphery of the saw blade base 1 and the damping medium layer 4 are provided with a plurality of narrow key slots 5 at equal intervals around the central axis, and the narrow key slots 5 on the saw blade base 1 correspond to and overlap with the narrow key slots 5 of the damping medium layer 4 one by one, and there is a gap between the end of the narrow key slot 5 and the first saw blade protrusion 2.

[0043] The narrow key slot 5 ensures water and chip removal during normal cutting. Compared with the U-shaped slot, it is more suitable for cutting rock slabs or brittle materials to prevent edge collapse.

[0044] As a preferred embodiment 10, the damping medium layer 3 is a copper sheet. The copper sheet as a damping medium has a better sound-absorbing effect and ensures the sound-absorbing effect.

[0045] As a preferred embodiment 11, the saw blade base 1, the first saw blade protrusion 2 and the second saw blade protrusion 3 are all made of carbon steel and alloy steel plates to ensure the rigidity of the saw blade base 1, the first saw blade protrusion 2 and the second saw blade protrusion 3.

[0046] As a preferred embodiment 12, the diameter of the saw blade base 1 is 350~400mm, the diameter of the first saw blade protrusion 2 is 40mm away from the outer circle of the saw blade base 1, the diameter of the second saw blade protrusion 3 is 70mm away from the outer circle of the saw blade base 1, the total thickness of the second saw blade protrusion 3 is 2.6mm~2.8mm, and the thickness of the first saw blade protrusion 2 is 2.1~2.3mm.

[0047] The working principle of this utility model:

[0048] The utility model provides a single-sided double-step composite sound-absorbing saw blade substrate, the substrate is formed by sandwiching a damping medium layer 4 between two saw blade substrates 1 to form a sandwich structure, thereby forming a saw blade substrate with a sound-absorbing function, and a double-step structure formed by the cooperation of a second saw blade protrusion 3 and a first saw blade protrusion 2 is arranged on the saw blade substrate 1 on one side. Compared with the existing single saw blade protrusion, the saw blade protrusion is made into a double-step second saw blade protrusion 3 and a first saw blade protrusion 2 under the condition that the thickness of the saw blade protrusion remains unchanged. The first saw blade protrusion 2 is located on the saw blade substrate 1, and the size of the first saw blade protrusion 2 is larger than the second saw blade protrusion 3. Through the first saw blade protrusion 2, the substrate can further reduce the thickness of the welding part of the cutter head, so that it is suitable for application scenarios where the cutting object requires a thinner blade or the cutting material is a brittle material. The second saw blade protrusion 3 reduces the resistance of the saw blade substrate during cutting and is conducive to the need for slag removal, while ensuring the rigidity and strength of the substrate at the same time.

Claims

1. A single-sided double-step composite silencer saw blade substrate, characterized in that: It comprises two saw blade base bodies (1) arranged opposite to each other, a damping medium layer (4) is sandwiched between the two saw blade base bodies (1) to form a sandwich structure, and the damping medium layer (4) is coaxial with the saw blade base body (1); A first saw blade protrusion (2) is coaxially provided on one side of the saw blade base (1) away from the damping medium layer (4), and a second saw blade protrusion (3) is coaxially provided on the other side of the first saw blade protrusion (2) away from the saw blade base (1), wherein the second saw blade protrusion (3) cooperates with the first saw blade protrusion (2) to form a double-step structure.

2. The single-sided double-step composite sound-absorbing saw blade substrate according to claim 1, characterized in that: The second saw blade protrusion (3) and the first saw blade protrusion (2) are integrally formed.

3. The single-sided double-step composite sound-absorbing saw blade substrate according to claim 2, characterized in that: The first saw blade protrusion (2) is integrally formed with the corresponding saw blade base (1).

4. The single-sided double-step composite sound-absorbing saw blade substrate according to claim 3, characterized in that: The side surfaces of the first saw blade protrusion (2) are inclined to form a chamfered structure, and the side surfaces of the second saw blade protrusion (3) are inclined to form a chamfered structure.

5. The single-sided double-step composite sound-absorbing saw blade substrate according to claim 4, characterized in that: Central holes (9) of the same size are provided at the middle positions of the saw blade base (1), the damping medium layer (4), the first saw blade protrusion (2) and the second saw blade protrusion (3).

6. The single-sided double-step composite sound-absorbing saw blade substrate according to claim 5, characterized in that: A plurality of first welding points (6) are arranged at equal intervals on the second saw blade protrusion (3) around the central hole (9), and the second saw blade protrusion (3), the saw blade base (1) and the damping medium layer (4) are fixedly fitted by spot welding at the first welding points (6); A plurality of second welding points (7) are arranged at equal intervals on the first saw blade protrusion (2) around the second saw blade protrusion (3); the first saw blade protrusion (2), the saw blade base (1) and the damping medium layer (4) are fixedly fitted by spot welding at the second welding points (7); A plurality of third welding points (8) are arranged at equal intervals on the saw blade base (1) around the first saw blade protrusion (2), and the saw blade base (1) and the damping medium layer (4) are fixedly matched by spot welding at the third welding points (8) to form a sandwich structure.

7. The single-sided double-step composite sound-absorbing saw blade substrate according to claim 6, characterized in that: The radius of the damping medium layer (4) is the same as the radius of the saw blade base (1), the radius of the first saw blade protrusion (2) is smaller than the radius of the saw blade base (1), and the radius of the second saw blade protrusion (3) is smaller than the radius of the first saw blade protrusion (2).

8. The single-sided double-step composite sound-absorbing saw blade substrate according to claim 7, characterized in that: The outer peripheries of the saw blade base (1) and the damping medium layer (4) are both provided with a plurality of narrow key slots (5) at equal intervals around the central axis, and the narrow key slots (5) on the saw blade base (1) correspond to and overlap with the narrow key slots (5) of the damping medium layer (4), and there is a gap between the ends of the narrow key slots (5) and the first saw blade protrusion (2).

9. The single-sided double-step composite sound-absorbing saw blade substrate according to claim 8, characterized in that: The damping medium layer (4) is a copper sheet.

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