Multi-tooth bimetal hole saw with long and short heat dissipation groove structure

Abstract

The utility model discloses a multi-tooth bimetal hole saw with a long and short heat dissipation groove structure, which comprises a lengthened plate, a quick release mechanism is arranged on the surface of the lengthened plate and is used for dismounting and assembling the hole saw, and the quick release mechanism comprises a clamping component which is arranged at the bottom of the lengthened plate and is used for fixed connection. According to the multi-tooth bimetal hole saw with the long and short heat dissipation groove structure, two clamping plates are arranged on the surface of a lengthened plate, a clamping block is rotationally connected to the surface of a clamping shaft, two clamping grooves are formed in the top of the lengthened plate, and two grooves are formed in the top of the lengthened plate at equal intervals, so that the problems that when the hole saw is used, the length of a saw blade is limited, and the service life of the saw blade is limited are solved. The problems that when cutting and drilling tasks are carried out, preset depth cannot be reached, reverse side repositioning needs to be carried out, then drilling is carried out again, positioning can occupy a large amount of time, repositioning can cause a large gap in the drilling position, a workpiece is damaged, and the production cost is increased are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bimetal hole saws, in particular to a multi-tooth bimetal hole saw with a long and short heat dissipation slot structure. Background Art

[0002] The reference patent name is "A Multi-Sided Bimetallic Hole Saw" (Patent Authorization Announcement No.: CN218946517U, Patent Announcement Date: 2023-05-02), which includes a mounting rod, a mounting cover plate is provided at the bottom end of the mounting rod, a plurality of barrels are fixedly connected to the bottom of the mounting cover plate, a serrated ring is provided at the bottom end of the barrel, two plug rods are fixedly connected to the top of the serrated ring, the plug rods pass through the barrel and are plugged into the mounting cover plate, the top of the mounting cover plate is fixedly connected to two fixed rods, a screw rod is rotatably connected to one side of the fixed rod, a connecting piece is provided on the threaded sleeve of the outer wall of the screw rod, two sliding columns are slidably plugged into one side of the fixed rod, an extrusion rod is fixedly connected to one end of the two sliding columns, a plurality of clamping blocks are fixedly connected to one side of the extrusion rod, and the clamping blocks are clamped with the plug rod. The utility model can replace the worn serrated ring by twisting the screw rod to make the connecting piece move along the screw rod, thereby disengaging the clamping block from the plug rod, and the entire barrel and the saw teeth need to be replaced together, which is low in cost.

[0003] The utility model can replace the worn serrated ring by twisting the screw rod to move the connecting piece along the screw rod, thereby disengaging the clamping block from the insertion rod. The entire barrel and the serrated teeth need only be replaced together, which is low-cost.

[0004] However, the above technical solution still has the problem that when the hole saw is used, the length of the saw blade is limited, and it cannot reach the predetermined depth during cutting and drilling tasks. It needs to be repositioned on the reverse side and then drilled again. The positioning takes a lot of time, and the repositioning may also cause a large difference in the hole opening position, resulting in damage to the workpiece and increased production costs.

[0005] To this end, the utility model provides a multi-tooth bimetal hole saw with a long and short heat dissipation slot structure. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a multi-tooth bimetal hole saw with a long and short heat dissipation groove structure, which solves the problem that when the hole saw is in use, the length of the saw blade is limited, and the predetermined depth cannot be reached during cutting and drilling tasks. The reverse side needs to be repositioned and then drilling again. The positioning takes a lot of time, and the repositioning may also cause a large difference in the hole opening position, resulting in damage to the workpiece and increased production costs.

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: a multi-tooth bimetal hole saw with a long and short heat dissipation slot structure, including an extension plate, a quick release mechanism is installed on the surface of the extension plate for disassembly and assembly of the hole saw, and the quick release mechanism includes:

[0008] A clamping assembly is installed at the bottom of the extension plate for fixed connection, the clamping assembly includes two clamping plates fixedly connected to the surface of the extension plate, two clamping grooves are provided on the side of the extension plate, the inner cavity of the clamping groove is fixedly connected with a clamping shaft, the surface of the clamping shaft is rotatably connected with a clamping block, the surface of the clamping shaft is sleeved with a torsion spring, and the two ends of the torsion spring are respectively fixedly connected to the surface of the clamping block and the inner cavity of the clamping groove;

[0009] The limiting component is installed at the bottom of the extension plate and is used to limit the position of the clamping component.

[0010] Preferably, the limiting assembly includes two slots equidistantly provided on the top of the extension plate, the connecting plate slides inside the slots, and two grooves equidistantly provided on the top of the extension plate, the connecting block slides inside the grooves.

[0011] Preferably, a base plate is installed on the top of the extension plate, and a clamping assembly is also installed on the bottom of the base plate to connect with the limiting assembly on the top of the extension plate. A saw blade is installed on the bottom of the extension plate, and a similar limiting assembly is installed on the flat end of the saw blade to connect with the limiting assembly on the bottom of the extension plate.

[0012] Preferably, a plurality of heat dissipation grooves are provided on the surfaces of the saw blade and the extension plate, and the heat dissipation grooves are of different lengths.

[0013] Preferably, the outer surfaces of the saw blade and the extension plate are both provided with an anti-rust layer and a wear-resistant layer, and the top of the anti-rust layer and the bottom of the wear-resistant layer are fixedly bonded by an adhesive.

[0014] Preferably, the rust-proof layer is a chromium aluminum nitride layer, the wear-resistant layer is a titanium nitride layer and a diamond-like carbon layer, the top of the chromium aluminum nitride layer is fixedly connected to the bottom of the titanium nitride layer, and the top of the titanium nitride layer is fixedly connected to the bottom of the diamond-like carbon layer.

[0015] Beneficial Effects

[0016] The utility model provides a multi-tooth bimetal hole saw with a long and short heat dissipation slot structure. Compared with the prior art, it has the following beneficial effects:

[0017] (1) The multi-tooth bimetal hole saw with a long and short heat dissipation groove structure has two clamping plates on the surface of the extension plate, the surface of the clamping shaft is rotatably connected with a clamping block, and two clamping grooves on the top of the extension plate. The top of the extension plate is provided with two grooves equidistantly, which solves the problem that when the hole saw is used, the length of its saw blade is limited, and it cannot reach the predetermined depth during cutting and drilling tasks, and it needs to be repositioned on the back and then drilled again. The positioning takes a lot of time, and the repositioning may also cause a large difference in the hole opening position, resulting in damage to the workpiece and increased production costs.

[0018] (2) The multi-tooth bimetal hole saw with a long and short heat dissipation groove structure has an anti-rust layer and a wear-resistant layer on the outer surfaces of the saw blade and the extension plate. The top of the anti-rust layer and the bottom of the wear-resistant layer are fixedly bonded by an adhesive, thereby achieving better resistance to high-temperature oxidation, greatly improving the tool life, increasing the surface hardness of the saw blade, reducing the chemical affinity of the saw blade, preventing adhesion damage during processing, and improving the wear resistance of the saw blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is the overall structural diagram of the utility model;

[0020] Figure 2 It is a schematic diagram of the extension plate of the utility model;

[0021] Figure 3 This is a schematic diagram of the connection relationship of the clamping block of the utility model;

[0022] Figure 4 It is a schematic diagram of the coating of the present utility model.

[0023] In the figure: 1-extension plate, 2-clamping assembly, 21-clamping plate, 22-clamping slot, 23-clamping shaft, 24-clamping block, 25-torsion spring, 3-limiting assembly, 31-clamping slot, 32-groove, 4-base plate, 5-saw blade, 6-heat dissipation slot, 7-rust-proof layer, 71-chromium aluminum nitride layer, 8-wear-resistant layer, 81-titanium nitride layer, 82-diamond-like carbon layer. DETAILED DESCRIPTION

[0024] 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 in 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.

[0025] See also Figure 1-4The utility model provides a technical solution: a multi-tooth bimetal hole saw with a long and short heat dissipation slot structure, comprising an extension plate 1, a quick release mechanism is installed on the surface of the extension plate 1 for disassembly and assembly of the hole saw, and the quick release mechanism comprises:

[0026] The clamping assembly 2 is installed at the bottom of the extension plate 1 for fixed connection. The clamping assembly 2 includes two clamping plates 21 fixedly connected to the surface of the extension plate 1. Two clamping grooves 22 are provided on the side of the extension plate 1. The inner cavity of the clamping groove 22 is fixedly connected with a clamping shaft 23. The surface of the clamping shaft 23 is rotatably connected with a clamping block 24. The surface of the clamping shaft 23 is sleeved with a torsion spring 25. The two ends of the torsion spring 25 are respectively fixedly connected to the surface of the clamping block 24 and the inner cavity of the clamping groove 22;

[0027] The limiting component 3 is installed at the bottom of the extension plate 1 and is used to limit the clamping component 2. The two clamping plates 21 on the surface of the extension plate 1 and the surface of the clamping shaft 23 are rotatably connected with the clamping block 24, the two clamping slots 31 on the top of the extension plate 1, and two grooves 32 are equidistantly provided on the top of the extension plate 1. This solves the problem that when the hole saw is used, the length of its saw blade is limited, and it cannot reach the predetermined depth during cutting and drilling tasks. It needs to be repositioned on the back and then drilled again. The positioning will take a lot of time, and the repositioning will also cause a large gap in the hole opening position, resulting in damage to the workpiece and increased production costs.

[0028] In this embodiment, the limiting assembly 3 includes two slots 31 equidistantly provided on the top of the extension plate 1, the snap-in plate 21 slides inside the slots 31, two grooves 32 equidistantly provided on the top of the extension plate 1, and the snap-in block 24 slides inside the grooves 32.

[0029] In this embodiment, a base plate 4 is installed above the extension plate 1, and a clamping component 2 is also installed at the bottom of the base plate 4 and connected to the limiting component 3 at the top of the extension plate 1. A saw blade 5 is installed at the bottom of the extension plate 1, and a similar limiting component 3 is installed at one flat end of the saw blade 5 and connected to the limiting component 3 at the bottom of the extension plate 1.

[0030] In this embodiment, a plurality of heat dissipation grooves 6 are formed on the surfaces of the saw blade 5 and the extension plate 1 , and the heat dissipation grooves 6 are of different lengths.

[0031] In this embodiment, the outer surfaces of the saw blade 5 and the extension plate 1 are both provided with an anti-rust layer 7 and a wear-resistant layer 8, and the top of the anti-rust layer 7 and the bottom of the wear-resistant layer 8 are fixedly bonded by an adhesive.

[0032] In this embodiment, the rust-proof layer 7 is a chromium aluminum nitride layer 71, and the wear-resistant layer 8 is a titanium nitride layer 81 and a diamond-like carbon layer 82. The top of the chromium aluminum nitride layer 71 is fixedly connected to the bottom of the titanium nitride layer 81, and the top of the titanium nitride layer 81 is fixedly connected to the bottom of the diamond-like carbon layer 82. By providing the rust-proof layer 7 and the wear-resistant layer 8 on the outer surfaces of the saw blade 5 and the extension plate 1, the top of the rust-proof layer 7 and the bottom of the wear-resistant layer 8 are fixedly bonded by an adhesive, which achieves better resistance to high-temperature oxidation, greatly improves the tool life, increases the surface hardness of the saw blade, reduces the chemical affinity of the saw blade, prevents adhesion damage during processing, and improves the wear resistance of the saw blade. At the same time, the contents not described in detail in this specification belong to the existing technology known to those skilled in the art.

[0033] During operation, the two clamping blocks 24 on the surface of the extension plate 1 are pushed apart so that the clamping blocks 24 slide outward, and the clamping blocks 24 slide and squeeze the torsion spring 25, and then the top end of the saw blade 5 is aligned with the bottom end of the extension plate 1, and the two clamping plates 21 of the extension plate 1 slide into the two clamping grooves 31, and then the clamping blocks 24 are released, so that the restoring force of the torsion spring 25 drives the clamping blocks 24 to rotate on the surface of the clamping shaft 23, and the clamping blocks 24 are fixed when they slide into the groove 32, and then the top end of the extension plate 1 is aligned with the top of the base plate 4 and the installation is completed through the above steps, and then the driving mechanism is installed to complete the assembly of the hole saw.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-tooth bimetal hole saw with a long and short heat dissipation slot structure, comprising an extension plate (1), characterized in that: A quick-release mechanism is installed on the surface of the extension plate (1) for disassembly and assembly of the hole saw, and the quick-release mechanism comprises: A clamping assembly (2) is installed at the bottom of the extension plate (1) for fixed connection, the clamping assembly (2) comprising two clamping plates (21) fixedly connected to the surface of the extension plate (1), two clamping grooves (22) are provided on the side of the extension plate (1), the inner cavity of the clamping groove (22) is fixedly connected to a clamping shaft (23), the surface of the clamping shaft (23) is rotatably connected to a clamping block (24), the surface of the clamping shaft (23) is sleeved with a torsion spring (25), and the two ends of the torsion spring (25) are respectively fixedly connected to the surface of the clamping block (24) and the inner cavity of the clamping groove (22); The limiting component (3) is installed at the bottom of the extension plate (1) and is used to limit the position of the clamping component (2).

2. The multi-tooth bimetal hole saw with a long and short heat dissipation slot structure according to claim 1, characterized in that: The limiting assembly (3) comprises two slots (31) equidistantly provided on the top of the extension plate (1), the clamping plate (21) slides inside the slots (31), the top of the extension plate (1) has two grooves (32) equidistantly provided, and the clamping block (24) slides inside the grooves (32).

3. The multi-tooth bimetal hole saw with a long and short heat dissipation slot structure according to claim 1, characterized in that: A base plate (4) is installed above the extension plate (1), and a clamping assembly (2) is also installed at the bottom of the base plate (4) and is connected to a limiting assembly (3) at the top of the extension plate (1). A saw blade (5) is installed below the extension plate (1), and a similar limiting assembly (3) is installed at one flat end of the saw blade (5) and is connected to the limiting assembly (3) at the bottom of the extension plate (1).

4. The multi-tooth bimetal hole saw with a long and short heat dissipation slot structure according to claim 3, characterized in that: A plurality of heat dissipation grooves (6) are provided on the surfaces of the saw blade (5) and the extension plate (1).

5. The multi-tooth bimetal hole saw with a long and short heat dissipation slot structure according to claim 3, characterized in that: The surfaces of the saw blade (5) and the extension plate (1) are both provided with an anti-rust layer (7) and a wear-resistant layer (8), and the top of the anti-rust layer (7) and the bottom of the wear-resistant layer (8) are fixedly bonded by an adhesive.

6. The multi-tooth bimetal hole saw with a long and short heat dissipation slot structure according to claim 5, characterized in that: The rust-proof layer (7) is a chromium aluminum nitride layer (71), the wear-resistant layer (8) is a titanium nitride layer (81) and a diamond-like carbon layer (82), the top of the chromium aluminum nitride layer (71) is fixedly connected to the bottom of the titanium nitride layer (81), and the top of the titanium nitride layer (81) is fixedly connected to the bottom of the diamond-like carbon layer (82).

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