Large and small tooth arc-shaped swing saw blade and swing saw

Abstract

The utility model provides a big and small tooth arc-shaped swing saw blade and swing saw relates to swing saw blade technical field, big and small tooth arc-shaped swing saw blade comprises a connecting portion and a cutting portion, the saw teeth of the cutting portion are arranged in an arc shape, a plurality of adjacent saw teeth form a saw tooth unit, each saw tooth unit comprises a plurality of big teeth and a plurality of small teeth, and a large and small tooth staggered arrangement structure is formed. Through the structural design that the large teeth and the small teeth are arranged in a staggered mode, the effective cutting area of the saw blade in the same time is increased, so that the cutting speed is increased, stress and heat in the cutting process are dispersed, vibration and deformation of the saw blade are reduced, and the cutting stability and precision are improved; and due to the design of the superposition angle, the sawteeth distributed in an arc shape are formed, impact and vibration in the cutting process can be reduced, and the cutting precision is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of swing saw blades, in particular to an arc-shaped swing saw blade with large and small teeth and a swing saw. Background Art

[0002] The cutting end of a traditional oscillating saw blade, i.e., the position of the saw teeth, is generally straight, and there is no angle change between the tooth tip and the center. When this type of oscillating saw blade cuts different materials, the movement direction of the saw blade is parallel to the direction of the saw teeth, and the shape and arrangement of the teeth are single, resulting in poor chip removal and heat dissipation capabilities of the saw blade, a rough cutting surface, affecting the cutting effect, reducing cutting efficiency, and also having an adverse effect on the service life of the saw blade. In response to the above defects, this application is proposed. Utility Model Content

[0003] The purpose of the utility model is to provide a large and small tooth arc-shaped swing saw blade and a swing saw, which optimizes the saw blade structure to improve cutting efficiency, cutting effect and product service life.

[0004] In order to solve the above problems, the utility model provides an arc-shaped swinging saw blade with large and small teeth, including a connecting part and a cutting part, wherein the connecting part is used to connect with the swing saw to realize the installation of the saw blade, and the end of the cutting part forms a cutting end with saw teeth, and the saw teeth of the cutting part are arranged in an arc shape, and several adjacent saw teeth constitute a saw tooth unit, each saw tooth unit includes several large teeth and several small teeth, thereby forming a structure in which large and small teeth are staggered at the cutting end of the cutting part.

[0005] Optionally, the difference between the large and small teeth may include one or more parameters such as tooth pitch, tooth width, cutting angle, tooth tip angle, tooth height, etc.

[0006] It should be noted that the staggered structure of large and small teeth referred to in this scheme is not limited to the setting of one large tooth and one small tooth, but also includes a staggered design in which multiple types of teeth are set continuously, such as two large teeth, two small teeth, two large teeth, and two small teeth, and the number of large and small teeth is the same. It also includes a staggered design in which the number of different types of teeth is set, such as one large tooth, two small teeth, one large tooth, and two small teeth.

[0007] Preferably, the number of saw teeth in the sawtooth unit is N, and the value range of N is 2 to 12.

[0008] Furthermore, the sawtooth unit has the same number of large teeth and small teeth.

[0009] According to an embodiment of the present invention, the sawtooth unit includes two large teeth and two small teeth arranged in sequence.

[0010] Optionally, with the center point of the saw blade as the coordinate, the angles of the tooth tips of each saw tooth or the saw teeth on the outside of the saw tooth unit and the coordinate connecting line are arranged in increasing order, with the value of each increase ranging from 0.1 to 0.5°, thereby forming arc-shaped distributed saw teeth, which helps to reduce impact and vibration during the cutting process and improve cutting accuracy. Optionally, the incremental value is the same or different each time.

[0011] According to an embodiment of the present invention, the distance A2 between two adjacent large tooth tips is greater than the distance A1 between two adjacent small tooth tips.

[0012] According to an embodiment of the present invention, the distance between two adjacent large tooth tips is in the range of 0.3-3 mm, and preferably A2 is 1.8 mm.

[0013] According to an embodiment of the present invention, the spacing between the adjacent small tooth tips is in the range of 0.1-2.5 mm, and preferably A1 is 1.5 mm.

[0014] According to an embodiment of the present invention, the connecting portion and the cutting portion are integrated or separated. When separated, the connecting portion and the cutting portion are connected by connecting members, such as bolts, welding, etc.

[0015] According to an embodiment of the present invention, the depth of the tooth gap between adjacent saw teeth switches as the large and small teeth switch.

[0016] A swing saw comprises the above-mentioned arc-shaped swing saw blade with large and small teeth.

[0017] The beneficial effects of the utility model are as follows: the saw blade structure design with staggered large and small teeth can increase the effective cutting area of the saw blade at the same time, thereby accelerating the cutting speed, helping to disperse the stress and heat during the cutting process, reducing the vibration and deformation of the saw blade, and thus improving the stability and accuracy of the cutting; since the staggered tooth rows can more evenly distribute the cutting force, burrs and unevenness generated during the cutting process can be reduced, and the smoothness and accuracy of the cut surface can be improved; and the arc-shaped distribution of the saw teeth formed by the design of the superposition angle helps to reduce the impact and vibration during the cutting process, and further improve the cutting accuracy;

[0018] When dealing with hard materials or irregularly shaped materials, the staggered tooth rows can better adapt to changes in the material surface, reducing the risk of jamming and breakage. The staggered tooth rows also disperse the force borne by each tooth during cutting, avoiding the risk of damage caused by excessive load on a single tooth, which helps to increase the service life of the saw blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is the front view of the large and small teeth arc swing saw blade;

[0021] Figure 2 It is a bottom view of the arc-shaped swing saw blade with large and small teeth;

[0022] Figure 3 This is an enlarged schematic diagram of the structure at the sawtooth position. DETAILED DESCRIPTION

[0023] The following description is intended only to disclose the present invention and to enable those skilled in the art to implement the present invention. The embodiments described below are provided for illustrative purposes only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention as defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other solutions that do not depart from the spirit and scope of the present invention.

[0024] [Example 1]

[0025] A large and small tooth arc swing saw blade, such as Figure 1 , including a connecting portion 11 and a cutting portion 12, wherein the connecting portion 11 (also called a knife pad) is used to connect with the swing saw to realize the installation of the saw blade. The structural design of the connecting position is adaptively designed according to the swing saw interface. The end of the cutting portion 12 (also called a saw blade) forms a cutting end with saw teeth. The saw teeth of the cutting portion 12 are arranged in an arc shape, and several adjacent saw teeth constitute a saw tooth unit 13. Each saw tooth unit 13 includes several large teeth 131 and several small teeth 132, thereby forming a structure in which large and small teeth are staggered at the cutting end of the cutting portion 12.

[0026] When saw blades cut materials, the staggered arrangement of large and small teeth significantly improves the cutting effect. This is mainly due to the dispersion of cutting forces, the optimization of cutting paths, and the enhancement of heat dissipation. The working principle of this optimization in this solution mainly involves the following aspects:

[0027] 1. Improve cutting efficiency: The staggered arrangement of large and small teeth can increase the effective cutting area of the saw blade at the same time, thereby speeding up the cutting speed; this arrangement helps to reduce the idle stroke during the sawing process (the idle stroke is the part of the saw blade that does not perform effective cutting during the movement), thereby improving cutting efficiency.

[0028] 2. Enhance cutting stability:

[0029] The staggered tooth design helps disperse stress and heat during the cutting process, reducing vibration and deformation of the saw blade, thereby improving cutting stability and precision. When working with hard or irregularly shaped materials, the staggered tooth arrangement can better adapt to changes in the material surface, reducing the risk of jamming and breakage. Furthermore, the staggered arrangement of large and small teeth creates a more complex cutting path, allowing the saw blade to more flexibly adapt to changes in the material surface during cutting. This flexible cutting path helps reduce resistance and friction during cutting, improves cutting stability, and further enhances cutting efficiency.

[0030] 3. Improve cutting quality:

[0031] Because the staggered teeth distribute cutting forces more evenly, they reduce burrs and unevenness during cutting, improving the smoothness and precision of the cut surface. The staggered arrangement also helps reduce noise and vibration during cutting, further improving the working environment and cutting quality.

[0032] 4. Increase the service life of saw blades:

[0033] The staggered arrangement of the teeth disperses the forces applied to each tooth during cutting, preventing damage to a single tooth due to excessive load. The overlapping angle design also helps reduce shock and vibration during cutting, improving cutting accuracy.

[0034] 5. Enhanced heat dissipation:

[0035] The staggered tooth design helps increase the contact area between the saw blade or cutter and the air, thereby improving heat dissipation. Good heat dissipation can reduce damage to the saw blade or cutter caused by heat generated during cutting, extending its service life and improving cutting efficiency.

[0036] Furthermore, in this embodiment, the saw tooth unit 13 is composed of 2 large teeth 131 + 2 small teeth 132, with the starting point on the left side of the saw blade ( Figure 1 The upper middle end) is the coordinate origin, and each group of sawtooth units is arranged cyclically, with no limit on the number of cycles.

[0037] Example 2, based on Example 1, Figure 3 The distance A2 between the tooth tips of two adjacent large teeth 131 is greater than the distance A1 between the tooth tips of two adjacent small teeth 132.

[0038] The depth of the tooth gap between adjacent saw teeth switches with the switching of large and small teeth.

[0039] Specifically, in this embodiment, the spacing A2 between the tooth tips of two adjacent large teeth 131 is 1.8 mm, and the spacing A1 between the tooth tips of two adjacent small teeth 132 is 1.5 mm, forming sawtooth gaps of different sizes, which further facilitates chip removal.

[0040] Example 3, based on Example 1 or 2, in this solution, with the center point 111 of the saw blade as the coordinate, the angles between the outermost saw tooth tip of each saw tooth or saw tooth unit and the coordinate connecting line are arranged in increasing order. For example, in this embodiment, Figure 1 The angles A5, A4, and A3 between the connecting lines of adjacent tooth tips and the coordinates increase by 0.17° and 0.18°, respectively, thus forming arc-shaped distributed saw teeth, which helps to reduce impact and vibration during the cutting process and improve cutting accuracy.

[0041] A swing saw is provided, on which is mounted an arc-shaped swing saw blade with large and small teeth according to any one of the above embodiments.

[0042] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are intended only as examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations and modifications may be made to the embodiments of the present invention without departing from the principles described.

Claims

1. A large and small tooth arc-shaped swing saw blade, characterized by: The invention comprises a connecting portion (11) and a cutting portion (12), wherein the saw teeth of the cutting portion (12) are arranged in an arc shape, and a plurality of adjacent saw teeth form a saw tooth unit (13), and each saw tooth unit (13) comprises a plurality of large teeth (131) and a plurality of small teeth (132), forming a structure in which large and small teeth are arranged in a staggered manner.

2. The arc-shaped swing saw blade with large and small teeth according to claim 1, characterized in that: The number of saw teeth in the saw tooth unit (13) is 2 to 12.

3. The arc-shaped swing saw blade with large and small teeth according to claim 2, characterized in that: The sawtooth unit (13) has the same number of large teeth (131) and small teeth (132).

4. The arc-shaped swing saw blade with large and small teeth according to claim 3, characterized in that: The sawtooth unit (13) comprises a plurality of large teeth (131) and a plurality of small teeth (132) arranged in sequence.

5. The arc-shaped swing saw blade with large and small teeth according to any one of claims 1 to 4, characterized in that: With the center point of the saw blade as the coordinate, the angles between the tooth tips and the coordinate connecting line are arranged in increasing order, with the angle increase range being 0.1~0.5°.

6. The arc-shaped swing saw blade with large and small teeth according to claim 5, characterized in that: The spacing between the tooth tips of adjacent large teeth (131) is greater than the spacing between the tooth tips of adjacent small teeth (132).

7. The arc-shaped swing saw blade with large and small teeth according to claim 6, characterized in that: The spacing between the tooth tips of adjacent large teeth (131) ranges from 0.3 to 3 mm.

8. The arc-shaped swing saw blade with large and small teeth according to claim 7, characterized in that: The spacing between the tooth tips of adjacent small teeth (132) ranges from 0.1 to 2.5 mm.

9. The arc-shaped swing saw blade with large and small teeth according to claim 1, characterized in that: The depth of the tooth gap between adjacent saw teeth switches with the switching of large and small teeth.

10. An oscillating saw, characterized in that: The invention comprises the arc-shaped swinging saw blade with large and small teeth as described in any one of claims 1 to 9.

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