Super-sharp saw blade special for wood cutting
By designing a multi-tooth structure and limiting protrusions for ultra-sharp wood-cutting saw blades, the problems of poor chip removal, poor heat dissipation, and unstable cutting during cutting of existing saw blades have been solved, achieving high-efficiency cutting and low-cost production.
Patent Information
- Application Number
- CN202520212746.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-11
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2035-02-11
AI Technical Summary
The existing saw blade base design results in poor chip removal and heat dissipation during cutting, heavy weight, high power drive required, limited cutting stability and speed, and easy deviation.
Design an ultra-sharp saw blade for cutting wood, which adopts a multi-tooth group structure. Each tooth group consists of a flat tooth, a right tooth, and a left tooth. Large and small notch chip removal grooves are provided between the tooth groups. The flat tooth is located at the front, and the right and left teeth are arranged in sequence and fixed by brazing. The limiting protrusion restricts the cutting depth, and the tooth group forms a specific cutting trajectory.
It improves cutting sharpness and stability, enhances chip removal efficiency and heat dissipation performance, reduces resistance fluctuations, ensures cutting uniformity and rotational stability, and reduces production costs.
Smart Images
Figure CN223657218U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a special saw blade for cutting wood, and particularly relates to a super-sharp special saw blade for cutting wood. BACKGROUND
[0002] The saw blade is a general term for a thin circular cutter used for cutting solid materials, which is usually composed of a saw blade base and a cutter head arranged on the outer periphery of the saw blade. The cutter head is driven to impact the material to achieve the cutting function. The saw blade base of the existing saw blade is mostly a complete disc surface, which is not conducive to chip removal and heat dissipation during cutting. Moreover, the saw blade itself has a certain weight. The saw blade base with a complete disc surface design needs greater power to drive rotation. More external energy is needed to drive the saw blade base to rotate during continuous operation. Some saw blades produce greater resistance and rapid fluctuation of resistance during rotation due to the uneven structure and mass distribution, thereby affecting the rotation speed and stability of the saw blade and easily causing the saw blade to deviate from rotation, resulting in inconsistent cutting depth of the product.
[0003] The saw blade teeth are mostly of uniform shape, and the cutting surface is not very ideal during cutting. SUMMARY
[0004] In order to overcome the shortcomings of the background art, the utility model provides a super-sharp special saw blade for cutting wood.
[0005] The technical scheme of the utility model is as follows: a saw blade body is provided, the saw blade body is disc-shaped, a circular hole is arranged at the center of the saw blade body, a plurality of tooth groups are arranged along the circumference at the edge of the saw blade body, a large gap chip removal groove is arranged between the plurality of tooth groups, each tooth group is composed of a plurality of flat teeth, a first bevel is arranged on each flat tooth, and a small gap chip removal groove is arranged between each flat tooth of the tooth group.
[0006] The large gap chip removal groove and the small gap chip removal groove are both U-shaped grooves recessed towards the center of the saw blade body, and the U-shaped groove of the large gap chip removal groove is larger than the U-shaped groove of the small gap chip removal groove.
[0007] Preferably, the tooth group further comprises a right tooth and a left tooth, the right tooth and the left tooth are each composed of a second bevel based on the structure of the flat tooth, but the second bevel on the right tooth and the bevel on the left tooth are respectively located on the left and right sides of the saw blade body, and a small gap chip removal groove is arranged between the flat tooth, the right tooth, and the left tooth.
[0008] Preferably, the first angle of the first bevel ranges from 30° to 38°, and the second angle of the second bevel ranges from 30° to 45°.
[0009] Preferably, the first angle is 35°, and the second angle is 33°.
[0010] Preferably, the flat tooth is located at the front of the saw blade body in the tooth group during cutting rotation, and the right tooth and the left tooth are sequentially located behind the flat tooth.
[0011] Preferably, the tooth group is composed of one flat tooth, one right tooth and one left tooth, and the tooth group is sequentially composed of the left tooth, the right tooth and the flat tooth in the direction of the cutting rotation of the saw blade body.
[0012] Preferably, the tooth group is composed of one flat tooth, two right teeth and two left teeth, and the tooth group is sequentially composed of the left tooth, the right tooth, the left tooth, the right tooth and the flat tooth in the direction of the cutting rotation of the saw blade body.
[0013] Preferably, the saw blade body is provided with a tooth seat at the positions where the flat tooth, the right tooth and the left tooth are mounted, and the tooth seat is in an L-shaped recess, and the flat tooth, the right tooth and the left tooth are fixed on the tooth seat by brazing.
[0014] Preferably, the saw blade body is provided with a limiting protrusion on each tooth group, the flat tooth, the right tooth and the left tooth on the tooth group form a circular cutting track during the cutting rotation of the saw blade, the limiting protrusion forms a limiting block rotary track during the cutting rotation of the saw blade, the radius of the cutting track is greater than the radius of the limiting block rotary track, the radius of the cutting track minus the radius of the limiting block rotary track forms a limiting size, the limiting size limits the cutting depth of the saw blade in a single time, and the limiting size ranges from 0.2 mm to 1.0 mm.
[0015] Preferably, since the second bevel angle of the right tooth and the left tooth is composed of the second bevel angle provided on the basis of the flat tooth structure, all the flat teeth are first brazed on the tooth seat of the saw blade body, and then the second bevel angles of the right tooth and the left tooth are sequentially and staggered machined according to the structure of the right tooth and the left tooth described above. In this way, the part inventory can be greatly reduced, and the direction does not need to be considered during brazing, thereby greatly reducing the production cost of batches.
[0016] The utility model discloses the beneficial effect is through the left tooth, the right tooth outside of tooth group and is equipped with the second bevel angle, increases the contact surface with the product while improving the cutting super sharp ability of sawtooth, reduces the concentrated wear of sawtooth, improves the cutting speed. The big gap chip removal groove facilitates the chip produced when cutting product, improves the cutting chip removal speed of product, reduces the resistance and improves the heat dissipation performance of product. The tooth group is arranged in the order of left tooth, right tooth, left tooth, right tooth and flat tooth, so that the resistance during cutting is more stable, and a good cutting surface is obtained during cutting. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figures 1-3 The utility model discloses the structure schematic view.
[0018] Figure 4 It is the front view of the utility model.
[0019] Figure 5 The utility model discloses a structure schematic view of flat tooth.
[0020] Figure 6 It is the front view of flat tooth of the utility model.
[0021] Figure 7 It is the left view of flat tooth of the utility model.
[0022] Figure 8 It is the right view of flat tooth of the utility model.
[0023] Figure 9 It is the plan view of flat tooth of the utility model.
[0024] Figure 10 The utility model discloses a structure schematic view of right tooth.
[0025] Figure 11 It is the front view of right tooth of the utility model.
[0026] Figure 12 It is the left view of right tooth of the utility model.
[0027] Figure 13 It is the right view of right tooth of the utility model.
[0028] Figure 14 It is the plan view of right tooth of the utility model.
[0029] Figure 15 The utility model discloses a structure schematic view of left tooth.
[0030] Figure 16 It is the front view of left tooth of the utility model.
[0031] Figure 17 It is the left view of left tooth of the utility model.
[0032] Figure 18 It is the right view of left tooth of the utility model.
[0033] Figure 19 It is the plan view of left tooth of the utility model.
[0034] Figure 20 The utility model discloses a structure schematic view of flat tooth, right tooth, left tooth.
[0035] Figure 21 It is Figure 2 It is the partial close-up view of A in the middle.
[0036] Figures 1-21The utility model discloses a saw blade, 11, round hole, 2, tooth seat, 3, flat tooth, 4, right tooth, 5, left tooth, 6, big gap chip flute, 71, first bevel angle, 72, second bevel angle, 8, small gap chip flute, 9, tooth seat, 10, limit lug, 12, limit lug rotation track, 13, cutting track, a, first angle, b, second angle, c, limit size. DETAILED DESCRIPTION
[0037] The technical solutions of the utility model will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are only some of the embodiments of the utility model, not all the embodiments.
[0038] The components of the embodiments of the utility model generally described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model.
[0039] Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.
[0040] In the description of the utility model, it should be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0041] It should be noted that the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. In this specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.
[0042] As Figures 1-21As shown, the present embodiment provides a super-sharp wood cutting saw blade, which comprises a saw blade body 1, the saw blade body 1 is a disc, the center of the saw blade body 1 is provided with a circular hole 11, a plurality of tooth groups are arranged and installed along the circumference at the edge of the saw blade body 1, a large gap chip removal groove 6 is arranged between the plurality of tooth groups, the tooth group is composed of a plurality of flat teeth 3, the flat teeth 3 are provided with a first bevel angle 71, and a small gap chip removal groove 8 is arranged between each flat tooth 3 of the tooth group.
[0043] The large gap chip removal groove 6 and the small gap chip removal groove 8 are both U-shaped grooves recessed towards the center of the saw blade body 1, and the U-shaped groove of the large gap chip removal groove 6 is larger than that of the small gap chip removal groove 8. The small gap chip removal groove 8 is used to discharge wood chips between the tooth groups, and the large gap chip removal groove 6 has a larger U-shaped groove, so it has a faster chip removal speed, reduces resistance, and cuts more smoothly.
[0044] Preferably, the tooth group further comprises a right tooth 4 and a left tooth 5, the right tooth 4 and the left tooth 5 are both composed of a second bevel angle 72 based on the structure of the flat tooth 3, but the second bevel angle 72 on the right tooth 4 and the bevel angle on the left tooth 5 are respectively located on the left and right sides of the saw blade body 1, and the small gap chip removal groove 8 is arranged between the flat tooth 3, the right tooth 4 and the left tooth 5.
[0045] Preferably, the first angle a of the first bevel angle 71 ranges from 30° to 38°, and the second angle b of the second bevel angle 72 ranges from 30° to 45°, which can well ensure the sharpness of the saw blade cutting.
[0046] Preferably, the first angle a is 35°, and the second angle b is 33°, which is more favorable for wood cutting effect.
[0047] Preferably, the flat tooth 3 is located at the forefront of the saw blade body 1 during cutting rotation (such as Figure 4 As shown, the arrow above represents the rotating direction of the saw blade), and the right tooth 4 and the left tooth 5 are sequentially located behind the flat tooth 3. Since the second bevel angle 72 of the right tooth 4 and the left tooth 5 is staggered and distributed on both sides of the saw blade body 1, it can better achieve cutting, make the structure and mass distribution of the saw blade equal, make the cutting resistance more stable, protect the rotating speed and stability of the saw blade, and thus solve the problem that the existing saw blade causes the depth of the product cutting to be inconsistent due to rotation deviation during cutting.
[0048] Preferably, the tooth group is composed of one flat tooth 3, one right tooth 4 and one left tooth 5, and the tooth group is sequentially left tooth 5, right tooth 4 and flat tooth 3 along the cutting rotation direction of the saw blade body 1. This scheme more clearly shows the alternating direction of the left tooth 5, the right tooth 4 and the flat tooth 3, which is the smallest scheme of the tooth group.
[0049] Preferably, the tooth group consists of 1 flat tooth 3, 2 right teeth 4, 2 left teeth 5, and the tooth group is in the order of left tooth 5, right tooth 4, left tooth 5, right tooth 4 and flat tooth 3 along the cutting rotation direction of the saw blade body 1. The tooth group of this scheme has 5 teeth, that is, 1 flat tooth 3, 2 right teeth 4, and 2 left teeth 5, which is more suitable for saw blades with a diameter of 100mm-140mm, especially for saw blades with a diameter of 120mm. Of course, for larger diameter saw blades, more tooth groups and more right teeth 4 and left teeth 5 in each tooth group can be added, but the number of right teeth 4 and left teeth 5 in each tooth group must be consistent and staggered with each other.
[0050] In order to better weld the flat tooth 3, the right tooth 4 and the left tooth 5 on the saw blade body 1, preferably, the saw blade body 1 is provided with a tooth seat 9 at the position where the flat tooth 3, the right tooth 4 and the left tooth 5 are installed, the tooth seat 9 is recessed L-shaped, and the flat tooth 3, the right tooth 4 and the left tooth 5 are fixed on the tooth seat 9 by brazing. Brazing is very suitable for welding different materials of metals together, because the materials of the saw blade body 1 and the flat tooth 3, the right tooth 4 and the left tooth 5 are different.
[0051] Because many cutting devices now use batteries as power sources, even if lithium batteries have a certain high-power output, they still cannot match the power directly taken from the socket. In order to avoid the saw blade being stuck and the cutting device being damaged due to the too large single cutting depth, the saw blade body 1 is provided with a limiting protrusion 10 on each tooth group, the flat tooth 3, the right tooth 4 and the left tooth 5 on the tooth group form a circular cutting track 13 when the saw blade rotates, the limiting protrusion 10 forms a limiting block rotary track 12 when the saw blade rotates, the radius of the cutting track 13 is greater than the radius of the limiting block rotary track 12, the radius of the cutting track 13 minus the radius of the limiting block rotary track 12 constitutes a limiting size c, the limiting size c limits the single cutting depth of the saw blade, and the limiting size c is in the range of 0.2mm-1.0mm. In this way, the limiting protrusion limits the maximum cutting depth of the saw blade in a single circle during cutting, which is more suitable for cutting devices powered by batteries.
[0052] In order to facilitate mass production and reduce the types of teeth (i.e. flat tooth 3, right tooth 4 and left tooth 5), preferably, since the second bevel angle 72 of the right tooth 4 and the left tooth 5 is composed of the second bevel angle 72 based on the structure of the flat tooth 3, all the flat teeth 3 are brazed on the tooth seat 9 of the saw blade body 1 first, and then the second bevel angle 72 of the right tooth 4 and the left tooth 5 is processed in turn and staggered according to the structure of the right tooth 4 and the left tooth 5 described above. In this way, the parts inventory can be greatly reduced, and there is no need to consider the direction during brazing, which greatly reduces the production cost of batches.
[0053] The circular hole 11 is used to install the saw blade body 1 on cutting machines and other equipment,
[0054] In the description of the utility model, it is to explain, unless another explicit stipulation and limit, term " install " " link " " connection " should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electric connection, can be direct connection, also can indirectly connect through intermediate medium, can be two element inside intercommunication, for ordinary skilled person in the art, can understand the concrete meaning of above -mentioned term in the utility model with specific situation.
Claims
1. A super-sharp wood cutting saw blade comprising a blade body (1), characterized in that: The saw blade body (1) is disc-shaped, a circular hole (11) is arranged at the center of the saw blade body (1), a plurality of tooth groups are arranged at the edge of the saw blade body (1) along the circumference, a large gap chip removal groove (6) is arranged between the plurality of tooth groups, each tooth group is composed of a plurality of flat teeth (3), a first bevel (71) is arranged on each flat tooth (3), and a small gap chip removal groove (8) is arranged between each flat tooth (3) of the tooth group. The large gap chip removal groove (6) and the small gap chip removal groove (8) are both U-shaped grooves recessed towards the center of the saw blade body (1), and the U-shaped groove of the large gap chip removal groove (6) is larger than the U-shaped groove of the small gap chip removal groove (8).
2. A super-sharp wood cutting saw blade according to claim 1, characterized in that: The first angle (a) of the first bevel (71) ranges from 30° to 38°.
3. A super-sharp wood cutting saw blade according to claim 2, characterized in that: The first angle (a) is 35°.
4. The super-sharp wood cutting saw blade of claim 2, wherein: The tooth group further comprises a right tooth (4) and a left tooth (5), the right tooth (4) and the left tooth (5) are each composed of a second bevel (72) based on the structure of the flat tooth (3), but the second bevel (72) on the right tooth (4) and the bevel on the left tooth (5) are respectively located on the left and right sides of the saw blade body (1), and the small gap chip removal groove (8) is arranged between the flat tooth (3), the right tooth (4) and the left tooth (5).
5. A super-sharp wood cutting saw blade according to claim 4, characterized in that: The second angle (b) of the second bevel (72) ranges from 30° to 45°.
6. A super-sharp wood cutting saw blade according to claim 5, characterized in that: The second angle (b) is 33°.
7. A super-sharp wood cutting saw blade as claimed in claim 4, characterized in that: The flat tooth (3) is located at the front of the tooth group during cutting rotation of the saw blade body (1), and the right tooth (4) and the left tooth (5) are sequentially located behind the flat tooth (3).
8. A super-sharp wood cutting saw blade according to any one of claims 4-7, characterized in that: The tooth group is composed of one flat tooth (3), one right tooth (4) and one left tooth (5), and the tooth group sequentially comprises the left tooth (5), the right tooth (4) and the flat tooth (3) in the cutting rotation direction of the saw blade body (1).
9. A super-sharp wood cutting saw blade according to any one of claims 4-7, characterized in that: The tooth group is composed of one flat tooth (3), two right teeth (4) and two left teeth (5), and the tooth group sequentially comprises the left tooth (5), the right tooth (4), the left tooth (5), the right tooth (4) and the flat tooth (3) in the cutting rotation direction of the saw blade body (1).
10. A super-sharp wood cutting saw blade according to any one of claims 4-7, characterized in that: The saw blade body (1) is provided with a tooth seat (9) at the positions where the flat tooth (3), the right tooth (4) and the left tooth (5) are installed, the tooth seat (9) is recessed L-shaped, and the flat tooth (3), the right tooth (4) and the left tooth (5) are fixed on the tooth seat (9) by brazing. The saw blade body (1) is provided with a limiting protrusion (10) on each tooth group, the flat tooth (3), the right tooth (4) and the left tooth (5) on the tooth group form a circular cutting track (13) during cutting rotation of the saw blade, the limiting protrusion (10) forms a limiting table block rotary track (12) during cutting rotation of the saw blade, the radius of the cutting track (13) is greater than the radius of the limiting table block rotary track (12), the radius of the cutting track (13) minus the radius of the limiting table block rotary track (12) constitutes a limiting size (c), the limiting size (c) limits the cutting depth of the saw blade in a single cutting, and the limiting size (c) ranges from 0.2mm to 1.0mm.