CN2608205Y - Improved saw blade - Google Patents

Abstract

An improved saw blade comprising a body: several groups of row teeth are set on the side of main body, every group of row teeth possesses a first section and a second section which are adjacent, said first and second sections are respectively equipped with several main saw teeth and several auxiliary saw teeth, every main saw tooth possesses a first clearance angle, every auxiliary saw tooth possesses a second clearance angle, and the tooth distances of every saw tooth and every saw tooth are identical, and said first and second clearance angles are different.

Description

Improved saw blade

technical field

The utility model relates to a saw blade, in particular to an improved saw blade.

Background technique

According to, the existing saw blade 10, as shown in Figure 1, includes a main body 11, and a plurality of serrations 12 formed on one side of the main body 11, during use, the saw blade 10 is relative to the The object to be sawed is cut, and at this time, the object produces a lot of debris due to the cutting process, and the majority of debris is driven by the movement of the cutting process to be discharged by the chip removal groove 13 between the saw teeth 12, so that A cut is made, and as the action is repeated, the cut is made deeper into the object.

Although the saw blade has the function of sawing in use, the saw teeth themselves usually have only a single shape (that is, all the teeth on a general saw blade are of the same shape, and the difference may only be that the saw teeth will be tilted to different sides), and The cutting speed of some sawtooth without rake angle is slow and the cutting efficiency is not high. Although the sawtooth with rake angle is designed with faster cutting speed, its durability is worse than that of sawtooth without rake angle. It is suitable for use It is easier to break and wear, so no matter which kind of sawtooth is mentioned above, it cannot take into account the effect of practicality and fast cutting.

Utility model content

In view of this, the main purpose of the utility model is to provide an improved saw blade, which has the best balance between practicability and fast cutting, so that the utility model can be used with In addition to the effect of fast cutting, it also takes into account the durability of the sawtooth.

Edge, in order to achieve this purpose, an improved saw blade of the present utility model includes a main body; a set of rows of teeth arranged on the side of the main body, each group of rows of teeth has an adjacent first section and a second Sections, the first and second sections are respectively provided with several main saw teeth and several secondary saw teeth, each of the main saw teeth has a first clearance angle, each of the auxiliary saw teeth has a second clearance angle, and each of the main saw teeth has a first clearance angle. The saw teeth have the same tooth pitch as each saw tooth, but the first and second clearance angles are different.

Wherein, the height of each main sawtooth is smaller than the height of each auxiliary sawtooth.

Wherein, the ratio of the height of each main sawtooth to the height of each auxiliary sawtooth is 0.71:0.73.

Wherein, the angle of the first clearance angle is smaller than the angle of the second clearance angle.

Wherein, the length of the first section is smaller than that of the second section.

Wherein, the length ratio of the first section and the second section is 1:2.5.

Wherein, the radius length of each main flute is smaller than the height of each main saw tooth, and the height of each main saw tooth is smaller than the distance between each main saw tooth.

Wherein, the ratio of the radius of each main flute to the distance between each main saw tooth and the height of each main saw tooth is 0.37:1.41:0.71.

Wherein, the radius length of each auxiliary flute is smaller than the height of each auxiliary saw tooth, and the height of each auxiliary saw tooth is smaller than the distance between each auxiliary saw tooth.

Wherein, the ratio of the radius of each auxiliary flute to the distance between each auxiliary saw tooth and the height of each auxiliary saw tooth is 0.33:1.41:0.73.

Description of drawings

In order to further illustrate the technical content of the present utility model, below carry out the items such as embodiment and accompanying drawing and structural feature of the present utility model and operation, be described in detail later, wherein:

Fig. 1 is a partial side view of a conventional saw blade.

Fig. 2 is a partial side view of the utility model.

Fig. 3 is a partial side view of a row of teeth of the utility model.

Fig. 4 is a schematic diagram of the saw tooth profile of the present invention.

Detailed ways

Firstly, as shown in FIG. 2 , an improved saw blade 20 of the present invention includes a main body 22 and an array of teeth 24 arranged along one side of the main body 22 .

Please refer again to shown in Fig. 3, Fig. 4, the utility model is characterized in that:

Each group of row teeth 24 has a first section A and a second section B, and the first section A and the second section B are respectively provided with several main serrations 26 and several secondary serrations 28, the first The section A and the second section B are arranged according to different length ratios, which is 1:2.5 in terms of the utility model. The distance between the main saw teeth 26 and the distance between the auxiliary saw teeth 28 The spacing ratio is close, and as far as the utility model is concerned, it is 1: 1. The arrangement length of the main saw teeth 26 is 25.4: 0.71 with respect to the height ratio of the main saw teeth 26. The number of secondary saw teeth 28 The ratio of the arrangement length to the height of each auxiliary sawtooth 28 is 63.5:0.73 in terms of the utility model; each main sawtooth 26 has a first addendum angle 261, a first clearance angle 262, and a front clearance angle 263 and an oblique angle 264, a main flute 27 is formed between each main sawtooth 26, the ratio of the radius of each main flute 27 to the distance between each main sawtooth 26 and the height of each main sawtooth 26 As far as the utility model is concerned, it is 0.37:1.41:0.71. Each of the auxiliary saw teeth 28 has a second addendum angle 281 and a second clearance angle 282, and a secondary chip removal groove 29 is formed between the auxiliary saw teeth 28. The ratio of the radius of each auxiliary flute 29 to the distance between each auxiliary saw tooth 28 and the height of each auxiliary saw tooth 28 is 0.33:1.41:0.73 in terms of the present invention.

The usage of this saw blade is described below: when using this saw blade 20 to cut an object, because the surface friction of the object is large, it is not easy to apply force, so after the cutting by the number of main saw teeth 26, the resulting kerf can make subsequent cutting The action is convenient to apply force, and now can continue to cut with respect to this object with respect to this object in the mode of reciprocating on this otch with these several pairs of serrations 28, until this otch reaches predetermined depth.

After continuous research by the author, it is found that when the saw blade is composed of saw teeth of different structures alternately forming different sections, the cutting effect and the durability of the saw blade are greater than that of a single saw tooth. As far as the utility model is concerned , when the structure of each part of the main sawtooth and the curvature of the main flute have the data indicated above, a cutting effect with high chip removal efficiency and fast speed can be achieved at this time, and each auxiliary sawtooth has The above data has the best durability. When the main and auxiliary saw teeth are used alternately, not only can the wear of the saw teeth itself be reduced, but also the cutting speed will not be reduced; at the same time, the shape of the saw blade is not limited to that shown in the utility model. The saw blade can also be made into various types such as band saw, bow saw or hole saw according to the cutting target or use needs without affecting its functionality.

However, the structure of the saw blade 20 in this case presents the first section A and the second section B in a staggered configuration in terms of its sawtooth, and the respective sawtooth of the second section B have different clearance angles, Two kinds of saw teeth with different clearance angles are arranged alternately on the saw blade 20, so that the user can saw the object quickly and effortlessly without damaging the saw teeth too quickly or comprehensively, so as to obtain a balance between work efficiency and tool life. An optimal balance point, and the various size ratios disclosed in the description of this case are the best values obtained by the creator of this case after continuous trials and experiments, which can indeed make the overall performance of the present utility model better than The traditional existing saw blade makes this case indeed progressive and practical.

Based on the above, the utility model is designed with different sections of sawtooth, providing users with a cutting product that can cut quickly and has good durability, which proves that this case has its unique features in terms of use function and structural innovation. Therefore, apply for a patent according to law.

Claims (10)

1. the saw blade of an improvement is characterized in that, includes:

One main body;

Array is located at the toothrow of this main body side, this is respectively organized toothrow and has one first adjacent section and one second section, this first, second section then is respectively equipped with several head saw teeth and the secondary sawtooth of number, this each head saw tooth has one first angle of relief, this each secondary sawtooth then has one second angle of relief, this each sawtooth is identical with the tooth pitch of each sawtooth, and this first, second angle of relief is then different.

2. according to the saw blade of the described a kind of improvement of claim 1, it is characterized in that wherein, the height of this each head saw tooth is less than the height of this each secondary sawtooth.

3. according to the saw blade of the described a kind of improvement of claim 2, it is characterized in that wherein, the height of this each head saw tooth and the aspect ratio of this each secondary sawtooth are to be 0.71: 0.73.

4. according to the saw blade of the described a kind of improvement of claim 1, it is characterized in that wherein, the angle of this first angle of relief is less than the angle of this second angle of relief.

5. according to the saw blade of the described a kind of improvement of claim 1, it is characterized in that wherein, the length of this first section is less than this second section.

6. according to the saw blade of the described a kind of improvement of claim 5, it is characterized in that wherein, the length ratio of this first section and this second section is to be 1: 2.5.

7. according to the saw blade of the described a kind of improvement of claim 1, it is characterized in that wherein, the radius length of this each main chip area is less than the height of this each head saw tooth, the height of this each head saw tooth is again less than the spacing between this each head saw tooth.

8. according to the saw blade of the described a kind of improvement of claim 7, it is characterized in that wherein, the spacing between the radius of this each main chip area and this each head saw tooth and the aspect ratio of this each head saw tooth are to be 0.37: 1.41: 0.71.

9. according to the saw blade of the described a kind of improvement of claim 1, it is characterized in that wherein, the radius length of this each secondary chip area is less than the height of this each secondary sawtooth, the height of this each secondary sawtooth is again less than the spacing between this each secondary sawtooth.

10. according to the saw blade of the described a kind of improvement of claim 9, it is characterized in that wherein, the spacing between the radius of this each secondary chip area and this each secondary sawtooth and the aspect ratio of this each secondary sawtooth are to be 0.33: 1.41: 0.73.

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