Alloy saw blade for cutting composite material for LNG (Liquefied Natural Gas) ship

Abstract

The utility model discloses an alloy saw blade for cutting composite material for LNG (liquefied natural gas) ship, which comprises a first saw blade and a second saw blade, the first saw blade comprises a first tooth opening and a second tooth opening, the first tooth opening and the second tooth opening are arranged on the circumferential outer wall of the first saw blade in a staggered manner, a flat tooth opening is arranged on the circumferential outer wall of the second saw blade, and the first tooth opening and the second tooth opening are staggered. And the second saw blade is fixedly mounted on the first saw blade. According to the alloy saw blade for cutting the composite material for the LNG ship, the first saw blade body and the second saw blade body are fixedly connected, the first tooth openings and the second tooth openings are formed in the circumferential outer wall of the first saw blade body in the staggered mode, and the first tooth openings and the second tooth openings which are formed in the staggered mode are beneficial for keeping the first saw blade body balanced and preventing the first saw blade body from deforming; the flat tooth openings formed in the second saw blade can cut burrs on the edge of the cutting face generated by the first saw blade in the cutting process, the burrs on the cutting face are reduced, and therefore the product quality can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting saw blades, in particular to an alloy saw blade for cutting composite materials for LNG ships. Background Art

[0002] LNG carriers are special ships that transport liquefied gas at temperatures as low as -163 degrees Celsius. The main factors considered in the construction and design of the ship are materials that can adapt to low-temperature media and the handling of volatile or flammable substances. The materials are mainly composed of plywood, reinforced polyurethane foam, and reinforced epoxy resin composites. The thickness of the components is relatively large, with the maximum processing thickness reaching 380mm. The processing accuracy and surface processing quality requirements are also relatively high.

[0003] According to the invention patent application with publication number: CN104441073A and publication date of 2015-03-25, a wood cutting saw blade is disclosed, including a saw blade base, a fixing hole for fixing the saw blade is provided in the center of the saw blade base, saw teeth are evenly distributed around the saw blade base, at least one semiconductor cooling plate is provided outside the fixing hole of the saw blade base, the cold end of the semiconductor cooling plate faces the saw teeth, a heat transfer conductor connected to the cold end is embedded in the saw blade base, and the conductor is 10 to 15 mm away from the root of the saw teeth, the fixing hole is composed of a circle of heat-conducting alloy rings, the heat-conducting alloy rings and the saw blade base are bonded to form an integral structure, the semiconductor cooling plate wire is embedded in the heat-conducting alloy ring, and the heat-conducting alloy ring is provided with a keyway for power supply guidance. Its main technical effect is: the heat on the saw teeth is absorbed by semiconductors, so there is no need to open heat dissipation grooves in the thinner saw tooth part, and the fluctuation of the saw teeth caused by air cooling can also be eliminated; before the saw blade base is embedded with the heat transfer conductor, it is necessary to open a hole in the saw blade base. Since the heat transfer conductor and the saw blade base are made of different materials, the saw blade base can rely on the heat transfer conductor to eliminate stress.

[0004] Since the products are composed of high-density, high-hardness materials and are relatively thick, the requirements for cutting tools during processing are relatively high. The existing saw blades are single-layer saw blade structures. The single-layer saw blade structure is prone to distortion during processing, resulting in deviation from the processing route, tool jamming and other problems. At the same time, the cutting surface of the single-layer saw blade structure is relatively rough during cutting. Therefore, an alloy saw blade for cutting LNG ship composite materials is proposed, which aims to solve the problem that the single-layer saw blade is prone to distortion and has a rough cutting surface during processing. Utility Model Content

[0005] The utility model aims to provide an alloy saw blade for cutting composite materials for LNG ships, aiming to solve the problem that a single-layer saw blade is easily twisted and has a rough cutting surface during processing.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An alloy saw blade for cutting composite materials for LNG ships comprises a first saw blade and a second saw blade, wherein the first saw blade comprises a first tooth opening and a second tooth opening, wherein the first tooth opening and the second tooth opening are staggered on the circumferential outer wall of the first saw blade, and a flat tooth opening is arranged on the circumferential outer wall of the second saw blade, and the second saw blade is fixedly mounted on the first saw blade.

[0008] Preferably, a first inclined surface is arranged at the top of the first tooth opening, and a second inclined surface is arranged at the top of the second tooth opening, and the first inclined surface is arranged opposite to the second inclined surface.

[0009] Preferably, it also includes a connecting buckle, and the first saw blade and the second saw blade are respectively provided with a first positioning hole and a second positioning hole on their outer walls, the connecting buckle includes a connecting cap, a connecting rod and a wrench, the wrench is rotatably connected to the connecting rod, an abutment portion is provided on the outer wall of the wrench, one end of the connecting rod passes through the first positioning hole and the second positioning hole, the connecting cap is threadedly connected to one end of the connecting rod, and the one end of the connecting rod abuts against the outer wall of the first saw blade through the abutment portion provided on the wrench.

[0010] Preferably, a positioning ring is provided on the outer wall of one side of the first saw blade, and a positioning groove is provided on the outer wall of one side of the second saw blade.

[0011] Preferably, a connecting hole is formed on the outer wall of one side of the first saw blade and the second saw blade, and a screw is connected in the connecting hole.

[0012] Preferably, a heat dissipation line is provided on the outer wall of the first saw blade.

[0013] In the above technical solution, the utility model provides an alloy saw blade for cutting composite materials for LNG ships, which has the following beneficial effects:

[0014] In the utility model, the first saw blade is fixedly connected to the second saw blade, and the first tooth openings and the second tooth openings are alternately arranged on the circumferential outer wall of the first saw blade. The alternately arranged first tooth openings and the second tooth openings help the first saw blade to maintain balance and prevent the first saw blade from deforming. The flat tooth openings arranged on the second saw blade can cut off the burrs on the edge of the cutting surface produced by the first saw blade during the cutting process, thereby reducing the burrs on the cutting surface and improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 A schematic diagram of a three-dimensional structure provided for an embodiment of the utility model;

[0017] Figure 2 A schematic diagram of the structure of the positioning groove provided in the embodiment of the utility model;

[0018] Figure 3 A partial structural schematic diagram provided for an embodiment of the utility model;

[0019] Figure 4 A schematic diagram of the assembly structure provided for an embodiment of the utility model.

[0020] Description of reference numerals:

[0021] 1. First saw blade; 11. First tooth opening; 111. First inclined surface; 12. Second tooth opening; 121. Second inclined surface; 13. First positioning hole; 2. Second saw blade; 21. Flat tooth opening; 22. Second positioning hole; 3. Connecting buckle; 31. Connecting cap; 32. Connecting rod; 33. Wrench; 34. Abutment portion; 4. Positioning ring; 5. Positioning groove; 7. Heat dissipation line. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] See also Figure 1 —4. An alloy saw blade for cutting composite materials for LNG ships, comprising a first saw blade 1 and a second saw blade 2. The first saw blade 1 comprises a first tooth opening 11 and a second tooth opening 12. The first tooth opening 11 and the second tooth opening 12 are alternately arranged on the circumferential outer wall of the first saw blade 1. The second saw blade 2 is provided with a flat tooth opening 21 on the circumferential outer wall. The second saw blade 2 is fixedly mounted on the first saw blade 1.

[0024] Specifically, the second saw blade 2 is fixedly mounted on the first saw blade 1, such as Figure 1 and Figure 2 As shown, the first tooth opening 11 and the second tooth opening 12 are alternately arranged on the circumferential outer wall of the first saw blade 1. Specifically, a first inclined surface 111 is arranged at the top of the first tooth opening 11, and a second inclined surface 121 is arranged at the top of the second tooth opening 12. Figure 3As shown, the first bevel 111 and the second bevel 121 are arranged in opposite directions, so that the first saw blade 1 is more stable during its rotation, and can prevent the first saw blade 1 from deviating from the processing route, so as to ensure that the cutting surface is relatively flat. A flat tooth opening 21 is arranged on the circumferential outer wall of the second saw blade 2. Specifically, the diameter of the second saw blade 2 is smaller than the diameter of the first saw blade 1. Therefore, the flat tooth opening 21 is located inside the first saw blade 1. When the first saw blade 1 keeps rotating, the second saw blade 2 keeps rotating synchronously. Since the diameter of the second saw blade 2 is smaller than the diameter of the first saw blade 1, during the cutting process, the first tooth opening 11 and the second tooth opening 12 on the first saw blade 1 preferentially contact the object to be cut. After cutting into a certain depth, the flat tooth opening 21 on the second saw blade 2 contacts the object to be cut, and can clean the burrs generated by the first saw blade 1.

[0025] The different tooth structures of the double-layer saw blade can achieve better cutting and chip removal effects, ensuring that the cutting surface remains smooth.

[0026] In the utility model, the first saw blade 1 is fixedly connected to the second saw blade 2, and the first tooth openings 11 and the second tooth openings 12 are alternately arranged on the circumferential outer wall of the first saw blade 1. The alternately arranged first tooth openings 11 and second tooth openings 12 help the first saw blade 1 to maintain balance and prevent the first saw blade 1 from deforming. The flat tooth openings 21 arranged on the second saw blade 2 can cut off the edge burrs of the cutting surface produced by the first saw blade 1 during the cutting process, thereby reducing the burrs on the cutting surface and improving product quality.

[0027] As an embodiment provided by the utility model, Figure 4 As shown, a first positioning hole 13 and a second positioning hole 22 are respectively opened on the outer walls of the first saw blade 1 and the second saw blade 2. Specifically, the number of the first positioning holes 13 and the second positioning holes 22 are both multiple and distributed in a circular array. Preferably, the opening position of the first positioning hole 13 is adapted to the opening position of the second positioning hole 22. A connecting buckle 3 is also included, such as Figure 4As shown, the connecting buckle 3 includes a connecting cap 31, a connecting rod 32 and a wrench 33. A thread is arranged on the outer wall of the connecting rod 32. One end of the connecting rod 32 passes through the first positioning hole 13 and the second positioning hole 22. The connecting cap 31 is threadedly connected to the connecting rod 32. An abutment portion 34 is arranged on the outer wall of one side of the wrench 33. When in use, firstly, one end of the connecting rod 32 is passed through one of the first positioning hole 13 and the second positioning hole 22, and then the connecting cap 31 is threadedly connected to the outer wall of the connecting rod 32 so that one end of the connecting cap 31 abuts against the second saw blade 2. Then, the wrench 33 is rotated so that the abutment portion 34 on the wrench 33 abuts against one end of the connecting rod 32, thereby fixing the first saw blade 1 and the second saw blade 2 between the connecting rod 32 and the connecting cap 31. The connecting buckle 3 is used to perform a simple preliminary connection between the first saw blade 1 and the second saw blade 2, so that the first saw blade 1 and the second saw blade 2 can be quickly positioned and connected, and the first saw blade 1 can be easily replaced.

[0028] Further, as 2 and Figure 4 As shown, a positioning ring 4 is provided on the outer wall on one side of the first saw blade 1, and a positioning groove 5 is opened on the outer wall on one side of the second saw blade 2. Preferably, the positioning ring 4 is adapted to the positioning groove 5 so that the first saw blade 1 and the second saw blade 2 can maintain a certain distance, thereby preventing the flat tooth opening 21 on the second saw blade 2 from contacting the first saw blade 1.

[0029] Connecting holes are provided on the outer wall of one side of the first saw blade 1 and the second saw blade 2. There are several connecting holes distributed in a circular array. Screws are connected in the connecting holes. The first saw blade 1 and the second saw blade 2 can be firmly connected through the screws and the connecting holes, thereby increasing the connection strength of the first saw blade 1 and the second saw blade 2.

[0030] The outer wall of the first saw blade 1 is provided with a heat dissipation line 7, which can dissipate heat quickly during processing, thereby preventing the first saw blade 1 from deforming and reducing the impact on the cutting quality of the first saw blade 1. Figure 1 As shown, the heat dissipation line 7 is composed of smooth curves and is directly cut by laser, with small round holes or elliptical holes at both ends, with a diameter of about 0.5 mm.

[0031] Those skilled in the art will appreciate that other similar connection methods may also be used to implement the present invention, such as welding, bonding or screwing.

[0032] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An alloy saw blade for cutting composite materials for LNG ships, characterized in that: The invention comprises a first saw blade (1) and a second saw blade (2), wherein the first saw blade (1) comprises a first tooth opening (11) and a second tooth opening (12), wherein the first tooth opening (11) and the second tooth opening (12) are arranged alternately on the circumferential outer wall of the first saw blade (1), and a flat tooth opening (21) is arranged on the circumferential outer wall of the second saw blade (2), and the second saw blade (2) is fixedly mounted on the first saw blade (1).

2. The alloy saw blade for cutting composite materials for LNG ships according to claim 1, characterized in that: A first inclined surface (111) is arranged at the top of the first tooth opening (11), and a second inclined surface (121) is arranged at the top of the second tooth opening (12), wherein the first inclined surface (111) and the second inclined surface (121) are arranged opposite to each other.

3. The alloy saw blade for cutting composite materials for LNG ships according to claim 1, characterized in that: The invention also comprises a connecting buckle (3), wherein the first saw blade (1) and the second saw blade (2) are respectively provided with a first positioning hole (13) and a second positioning hole (22), wherein the connecting buckle (3) comprises a connecting cap (31), a connecting rod (32) and a wrench (33), wherein the wrench (33) is rotatably connected to the connecting rod (32), and an abutment portion (34) is provided on the outer wall of the wrench (33), wherein one end of the connecting rod (32) passes through the first positioning hole (13) and the second positioning hole (22), and the connecting cap (31) is threadedly connected to one end of the connecting rod (32), and the one end of the connecting rod (32) abuts against the outer wall of the first saw blade (1) through the abutment portion (34) provided on the wrench (33).

4. The alloy saw blade for cutting composite materials for LNG ships according to claim 1, characterized in that: A positioning ring (4) is provided on the outer wall of one side of the first saw blade (1), and a positioning groove (5) is provided on the outer wall of one side of the second saw blade (2).

5. The alloy saw blade for cutting composite materials for LNG ships according to claim 1, characterized in that: A connection hole is provided on the outer wall of one side of the first saw blade (1) and the second saw blade (2), and a screw is connected in the connection hole.

6. The alloy saw blade for cutting composite materials for LNG ships according to claim 1, characterized in that: A heat dissipation line (7) is provided on the outer wall of the first saw blade (1).

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