Saw blade capable of limiting single cutting depth
By setting limit bumps and cutter heads on the saw blade to limit the depth of a single cutting, the problems of low power and low torque of the lithium battery cutting machine are solved, and efficient cutting and extended saw blade life are achieved. It is suitable for saw blade design of lithium battery cutting machines.
Patent Information
- Application Number
- CN202422263598.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-09-14
AI Technical Summary
Due to the low power and low torque of the saw blade of the lithium battery cutting machine, the cutting efficiency and shortened battery life. The saw blades that are not suitable for lithium battery power cannot meet the needs of the lithium battery cutting machine.
Design a saw blade that limits the depth of a single cutting. By setting limit bumps and cutter heads on the saw blade, limiting the depth of cutting, reducing the power and torque required for single cutting of the saw blade. Carbide cutting heads and brazing welding processes are used, combining heat dissipation holes and sound silence slots to improve the performance of the saw blade.
It effectively limits the single cutting depth of the saw blade, reduces the power and torque requirements of the saw blade, adapts to the working requirements of the lithium battery cutting machine, extends the service life of the saw blade and reduces noise.
Smart Images
Figure CN223289082U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of saw blades, in particular to a saw blade capable of limiting a single cutting depth. Background Art
[0002] Lithium battery cutting machines are becoming increasingly popular. Although they have advantages such as portability, compact size, and no power cord, they are powered by lithium batteries, which inevitably leads to disadvantages such as low power and low torque. In addition, since lithium batteries can output more energy at low power output (lithium batteries are not suitable for high current output), high current output will also cause the internal temperature of the battery to rise, sharply shortening the battery life.
[0003] However, conventional saw blades are designed for cutting machines that are directly powered by a socket. Directly powered cutting machines have the advantages of high power and high torque. There is an urgent need on the market for a saw blade specifically designed for lithium battery cutting machines. Utility Model Content
[0004] In order to overcome the shortcomings of the background technology, the utility model provides a saw blade with limited single cutting depth.
[0005] The technical solution of the utility model is: it includes a base, which is disc-shaped, a fixing hole is provided at the center position of the base, a cutter head is installed on the radial outer periphery of the base, and a limiting protrusion is provided on the radial outer periphery of the base, and the limiting protrusion is located in front of the saw blade of the cutter head in the cutting rotation direction.
[0006] When the saw blade rotates during cutting, the cutter head forms a circular cutter head cutting track, and when the saw blade rotates during cutting, the limit protrusion forms a limit protrusion rotation track. The radius of the cutter head cutting track is greater than the radius of the limit protrusion rotation track. The radius of the cutter head cutting track minus the radius of the limit protrusion rotation track constitutes a limit size, and the limit size limits the single cutting depth of the saw blade.
[0007] The thickness of the cutter head is thicker than that of the base body, and the central layer of the cutter head and the central layer of the base body are in the same plane;
[0008] The base is provided with a material withdrawal groove, the material withdrawal groove is located in front of the cutting direction of the cutter head, and a notch is provided on the material withdrawal groove.
[0009] Preferably, the limiting protrusion is provided with a first inclined surface in the opposite direction of the saw blade cutting, and the limiting protrusion is provided with a second inclined surface in the cutting direction of the saw blade. The intersection of the first inclined surface and the second inclined surface forms the rotation trajectory of the limiting protrusion when the saw blade rotates during cutting. Except for the intersection, the first inclined surface and the second inclined surface are both located inside the rotation trajectory of the limiting protrusion.
[0010] Preferably, a rounded corner is provided between the first inclined surface and the second inclined surface, and the rotation trajectory of the limiting protrusion is the trajectory formed by the rounded corner when the saw blade rotates during cutting.
[0011] Preferably, the limiting protrusion is composed of a raised arc on the base, the radius of the arc is the same as the radius of the rotation trajectory of the limiting protrusion, the arc is concentric with the rotation trajectory of the limiting protrusion, and the limiting protrusion is provided with a second inclined surface in the cutting direction of the saw blade.
[0012] Preferably, a rounded corner is provided between the arc and the second inclined surface.
[0013] Preferably, the base body is provided with a cutter head mounting seat at the outer periphery thereof, the cutter head mounting seat is an L-shaped notch, and a cutter head is mounted on the cutter head mounting seat.
[0014] Preferably, the cutter head is welded to the cutter head mounting seat by brazing, and the cutter head is a cemented carbide cutter head.
[0015] Preferably, the range of the limiting size is 0.2mm~1.0mm.
[0016] Preferably, when the material to be cut is steel such as iron sheet, the limit size is preferably 0.3mm~0.5mm.
[0017] Preferably, when the material to be cut is plastic such as acrylic, the limiting size is preferably 0.5mm~0.6mm.
[0018] Preferably, when the material to be cut is hardwood material, the limiting size is preferably 0.6 mm to 0.8 mm.
[0019] Preferably, when the material to be cut is cork material, the limiting size is preferably 0.8 mm to 1.0 mm.
[0020] Preferably, when the material to be cut is conventional wood material, the limiting size is preferably 0.7-0.8 mm.
[0021] Preferably, heat dissipation holes are provided on the base, and the base is formed by metal stamping or metal cutting.
[0022] Preferably, a silencer groove is further provided at the bottom of the material return groove, and a circular hole is provided at the bottom of the silencer groove. The silencer groove serves to reduce the noise during cutting of the product of the utility model, and the circular hole can solve the stress concentration of the silencer groove during cutting by the saw blade.
[0023] The beneficial effect of the utility model is to limit the single cutting depth of the saw blade by adjusting the limit size, thereby limiting the maximum torque and maximum power required by the saw blade, and meeting the saw blade requirements of the lithium battery cutting machine. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a structural diagram of the present utility model.
[0025] Figure 2 It is a front view of embodiment 1 of the present utility model.
[0026] Figure 3 yes Figure 2 A partial enlarged view of point A.
[0027] Figure 4 It is a front view of embodiment 2 of the present utility model.
[0028] Figure 5 yes Figure 4 A partial enlarged view of point B.
[0029] Figure 1-Figure 5 In the figure, 1. base, 11. cutter head mounting seat, 2. fixing hole, 3. cutter head, 31. cutting edge, 4. heat dissipation hole, 5. material withdrawal groove, 51. notch, 6. limiting protrusion, 61. first inclined plane, 62. second inclined plane, 63. fillet, 64. arc, 7. silencer groove, 8. cutter head cutting trajectory, 9. limiting protrusion rotation trajectory, a. limiting dimension. DETAILED DESCRIPTION
[0030] The following is a further description of the embodiments of the present invention with reference to the accompanying drawings:
[0031] like Figure 1-Figure 5 As shown, this embodiment provides a saw blade that limits the depth of a single cut, including a base 1, the base 1 is disc-shaped, a fixing hole 2 is provided at the center of the base 1, and the fixing hole 2 is used to fix the saw blade on a lithium battery cutting machine. A cutter head 3 is installed on the radial outer periphery of the base 1, and a limiting protrusion 6 is provided on the radial outer periphery of the base 1, and the limiting protrusion 6 is located in front of the cutter head 3 in the saw blade cutting rotation direction.
[0032] When the saw blade rotates during cutting, the cutter head 3 forms a circular cutter head cutting trajectory 8, and the limiting protrusion 6 forms a limiting protrusion rotation trajectory 9 when the saw blade rotates during cutting. The radius of the cutter head cutting trajectory 8 is greater than the radius of the limiting protrusion rotation trajectory 9. The radius of the cutter head cutting trajectory 8 minus the radius of the limiting protrusion rotation trajectory 9 constitutes the limiting dimension a, and the limiting dimension a limits the single cutting depth of the saw blade.
[0033] As shown in the figure, since the limiting protrusion 6 is located in front of the cutter head 3 in the cutting direction, when the saw blade is rotating for cutting, the limiting protrusion 6 will first hit the material to be cut, so that the depth of the cutter head 3 entering the material to be cut is limited by the limiting protrusion 6. Figure 2-5As shown, the radius of the cutter head cutting track 8 is only slightly larger than the radius of the limiting protrusion rotation track 9, thereby limiting the single cutting depth of the saw blade during cutting. Since the torque during saw blade cutting is approximately proportional to the single cutting depth of the saw blade, reducing the single cutting depth of the saw blade can greatly reduce the working power of the lithium battery cutting machine.
[0034] The product design of this utility model is designed with different sizes of limit dimensions a according to the material of the cut material, the diameter of the saw blade, and the power of the lithium battery cutting machine, so as to adapt to different working conditions.
[0035] In order to reduce the direct contact between the base 1 and the cut material during saw blade cutting and reduce the friction between the base 1 and the cut material, preferably, the thickness of the cutter head 3 is thicker than the thickness of the base 1, and the center layer of the cutter head 3 is in the same plane as the center layer of the base 1, so that the cutter heads 3 on both the left and right sides of the base 1 can cut the cut material.
[0036] Since a large amount of cutting material is generated when the saw blade rotates and cuts the material being sawn, in order to facilitate the removal of the cutting material, preferably, the base body 1 is provided with a material withdrawal groove 5, the material withdrawal groove 5 is located in front of the cutting direction of the cutter head 3, and the material withdrawal groove 5 is provided with a notch 51.
[0037] When the saw blade rotates and cuts, the cutting material will enter the material return groove 5 under the action of the cutter head 3, and then fly out through the notch 51. In addition, the material return groove 5 can also take away a certain amount of heat when the saw blade rotates, reducing problems with the cutter head 3 and thus increasing the service life of the cutter head 3.
[0038] The first embodiment of the limiting protrusion 6:
[0039] like Figure 2-Figure 3 To reduce the contact area between the limiting protrusion 6 and the material being cut, the limiting protrusion 6 preferably has a first inclined surface 61 in the direction opposite to the saw blade's cutting direction, and a second inclined surface 62 in the saw blade's cutting direction. The intersection of the first and second inclined surfaces 61, 62 forms the limiting protrusion's rotational trajectory 9 during the saw blade's cutting rotation. Except for the intersection, the first and second inclined surfaces 61, 62 are located within the limiting protrusion's rotational trajectory 9. This significantly reduces frictional resistance when the saw blade rotates.
[0040] Preferably, a rounded corner 63 is provided between the first inclined surface 61 and the second inclined surface 62, and the rotation trajectory 9 of the limiting protrusion is the trajectory formed by the rounded corner 63 when the saw blade rotates during cutting. Due to the transition of the rounded corner 63, the friction resistance is smaller than that of a sharp corner.
[0041] The second embodiment of the limiting protrusion 6:
[0042] like Figure 4-Figure 5Preferably, the limiting protrusion 6 is formed by a circular arc 64 protruding from the base 1. The radius of the circular arc 64 is the same as the radius of the limiting protrusion rotation trajectory 9. The circular arc 64 is concentric with the limiting protrusion rotation trajectory 9. The limiting protrusion 6 is provided with a second inclined surface 62 in the cutting direction of the saw blade. The circular arc 64 is also a good limiting method.
[0043] In order to reduce the resistance between the limiting protrusion 6 and the cut material when the saw blade rotates, preferably, a rounded corner 63 is provided between the arc 64 and the second inclined surface 62. Due to the transition of the rounded corner 63, the friction resistance is smaller than that of a sharp corner.
[0044] In order to facilitate welding the cutter head 3 to the base 1 and ensure a fixed size, preferably, the base 1 is provided with a cutter head mounting seat 11 at the outer periphery, the cutter head mounting seat 11 being an L-shaped notch, and the cutter head 3 is mounted on the cutter head mounting seat 11.
[0045] Preferably, the cutter head 3 is brazed to the cutter head mounting base 11, and the cutter head 3 is a carbide cutter head. Brazing is a low-cost, mature, stable and reliable process for welding cutter heads. Carbide cutter heads are suitable for a wide range of cutting materials, especially wood materials.
[0046] Preferably, the range of the limiting dimension a is 0.2 mm to 1.5 mm.
[0047] Depending on the material being cut, different size ranges of limit sizes can be selected. The preferred limit size range for long-term cutting materials is as follows:
[0048] When the material to be cut is steel such as iron sheet, the limit size a is preferably 0.3mm~0.5mm.
[0049] When the material to be cut is plastic such as acrylic, the limiting dimension a is preferably 0.5 mm to 0.6 mm.
[0050] When the material to be cut is hardwood, the limiting dimension a is preferably 0.6 mm to 0.8 mm.
[0051] When the material to be cut is cork, the limiting dimension a is preferably 0.8 mm to 1.0 mm.
[0052] When the material to be cut is conventional wood material, the applicant has designed saw blades with limit sizes a of 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, etc.
[0053] As the current lithium battery cutting machine is mainly used for cutting wood materials, preferably, the limit size a is 0.8 mm.
[0054] Preferably, the base 1 is provided with heat dissipation holes 4, and the base 1 is formed by metal stamping or metal cutting.
[0055] Preferably, a silencer groove 7 is further provided at the bottom of the material return groove 5, and a circular hole is provided at the bottom of the silencer groove 7. The silencer groove 7 serves to reduce the noise during cutting of the product of the utility model, and the circular hole can solve the stress concentration of the silencer groove 7 during cutting by the saw blade.
[0056] This embodiment should not be regarded as a limitation of the utility model, but any improvement based on the spirit of the utility model should be within the scope of protection of the utility model.
Claims
1. A saw blade for limiting a single cutting depth, comprising a base (1), characterized in that: The base (1) is disc-shaped, a fixing hole (2) is provided at the center of the base (1), a cutter head (3) is mounted on the radial outer periphery of the base (1), and a limiting protrusion (6) is provided on the radial outer periphery of the base (1), and the limiting protrusion (6) is located in front of the saw blade of the cutter head (3) in the cutting rotation direction; When the saw blade is rotating during cutting, the cutter head (3) forms a circular cutter head cutting track (8), and when the saw blade is rotating during cutting, the limiting protrusion (6) forms a limiting protrusion rotation track (9), the radius of the cutter head cutting track (8) is greater than the radius of the limiting protrusion rotation track (9), and the radius of the cutter head cutting track (8) minus the radius of the limiting protrusion rotation track (9) constitutes a limiting dimension (a), and the limiting dimension (a) limits the single cutting depth of the saw blade; The thickness of the cutter head (3) is thicker than that of the base body (1), and the central layer of the cutter head (3) and the central layer of the base body (1) are in the same plane; A material withdrawal groove (5) is provided on the base body (1), the material withdrawal groove (5) is located in front of the cutting direction of the cutter head (3), and a notch (51) is provided on the material withdrawal groove (5).
2. The saw blade for limiting a single cutting depth according to claim 1, characterized in that: The limiting protrusion (6) is provided with a first inclined surface (61) in the opposite direction of the saw blade cutting, and the limiting protrusion (6) is provided with a second inclined surface (62) in the saw blade cutting direction. The intersection of the first inclined surface (61) and the second inclined surface (62) forms the limiting protrusion rotation track (9) when the saw blade rotates during cutting. Except for the intersection, the first inclined surface (61) and the second inclined surface (62) are both located inside the limiting protrusion rotation track (9).
3. The saw blade with limited single cutting depth according to claim 2, characterized in that: A rounded corner (63) is provided between the first inclined surface (61) and the second inclined surface (62), and the rotation trajectory (9) of the limiting protrusion is a trajectory formed by the rounded corner (63) when the saw blade rotates during cutting.
4. The saw blade for limiting a single cutting depth according to claim 1, characterized in that: The limiting protrusion (6) is composed of a circular arc (64) protruding from the base (1), the radius of the circular arc (64) is the same as the radius of the limiting protrusion rotation track (9), the circular arc (64) is concentric with the limiting protrusion rotation track (9), and the limiting protrusion (6) is provided with a second inclined surface (62) in the cutting direction of the saw blade.
5. The saw blade for limiting the single cutting depth according to claim 4, characterized in that: A rounded corner (63) is provided between the circular arc (64) and the second inclined surface (62).
6. The saw blade for limiting a single cutting depth according to claim 1, characterized in that: The base (1) is provided with a cutter head mounting seat (11) at the outer periphery thereof. The cutter head mounting seat (11) is an L-shaped notch. A cutter head (3) is mounted on the cutter head mounting seat (11).
7. The saw blade for limiting a single cutting depth according to claim 5, characterized in that: The cutter head (3) is welded to the cutter head mounting seat (11) by brazing, and the cutter head (3) is a hard alloy cutter head.
8. The saw blade for limiting a single cutting depth according to claim 1, characterized in that: The range of the limiting dimension (a) is 0.2 mm to 1.0 mm.
9. The saw blade for limiting single cutting depth according to claim 8, characterized in that: The limiting dimension (a) is 0.7-0.8 mm.
10. The saw blade for limiting a single cutting depth according to any one of claims 1 to 9, characterized in that: The base (1) is provided with heat dissipation holes (4), and the base (1) is formed by metal stamping or metal cutting.