CN202388058U - A bimetallic saw blade - Google Patents

Abstract

The utility model relates to the technical field of machining tools, in particular to a bimetal saw blade, which comprises a saw blade body, wherein the saw blade body is provided with saw teeth, two ends of the saw blade body are welded together to form an annular structure, the saw teeth comprise a tooth tip part and a tooth root part, the tooth root part and the saw blade body are of an integrated structure, the tooth tip part is fixedly connected on the tooth root part through laser welding, the tooth tip part and the saw blade body are made of different metal materials, the hardness of the tooth tip part is more than that of the saw blade body and the tooth root part, the utility model utilizes the two metal combined welding modes to ensure that the tooth tip part of the saw teeth has higher hardness, improve the cutting performance and the service life, greatly improve the cutting efficiency, have good cutting quality, can cut metal and other materials, have wide application range, and simultaneously the hardness of the saw blade body and the saw teeth is different, thereby not only ensuring, and the processing is convenient and the cost is low.

Description

A bimetallic saw blade

Technical field:

The utility model relates to the technical field of machining tools, in particular to a bimetallic saw blade.

Background technique:

Saw blades are widely used in machinery manufacturing, wood processing, metallurgy, chemical industry, military industry and other industries. The saw blade is divided into frame saw blade and band saw blade. The frame saw blade is thin and long, and the symmetrical side of the saw back is made with several saw teeth. This kind of saw is installed on the frame saw machine tool for sawing workpieces; Long, circular saw with several serrated teeth on one side of the saw back symmetrical, installed on the band saw machine for sawing work.

The existing saw blade is composed of the saw teeth of the saw blade body. In order to achieve better processing performance, the saw blade body requires higher toughness, and the saw teeth require higher hardness. Due to the limitation of cost and toughness requirements, saw blades are generally made of high Made of carbon steel, the hardness of the saw blade is increased by overall quenching, so that the overall hardness of the saw blade is the same, so the existing saw blades have limited sawtooth hardness, low cutting efficiency, affecting cutting quality, short service life, and difficult to use for cutting metal materials , the scope of application is limited.

Utility model content:

The purpose of the utility model is to provide a bimetallic saw blade with high sawtooth hardness aiming at the deficiencies in the prior art.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a bimetallic saw blade, which includes a saw blade body, one side edge of the saw blade body is continuously arranged with sawtooth, and the two ends of the saw blade body are welded together to form a ring structure, The sawtooth includes a tooth tip and a tooth root. The tooth root and the saw blade body are integrally formed. The tooth tip is fixedly connected to the tooth root by laser welding. The tooth tip and the saw blade body are made of different metal materials. The hardness of the tooth tip It is greater than the hardness of the saw blade body and tooth root, and the height of the tooth tip is 1/3 to 2/3 of the tooth height.

The height of the saw teeth is 1/10-1/3 of the width of the saw blade body.

The distance between the saw teeth is a variable pitch of unequal distances.

The hardness of the tooth tips is HRC 68-79 degrees, and the hardness of the saw blade body and tooth roots is HRC 42-43 degrees.

The saw teeth are arranged staggered left and right.

The materials of the saw blade body and tooth root are both spring steel or high carbon tool steel.

The material of the tooth tips is cemented carbide.

The beneficial effect of the utility model is that: the utility model includes a saw blade body, one side edge of the saw blade body is continuously arranged with sawtooth, the two ends of the saw blade body are welded together to form a ring structure, the sawtooth includes a tooth tip and a tooth root, the teeth The root part and the saw blade body are integrally formed. The tooth tip is fixedly connected to the tooth root by laser welding. The tooth tip and the saw blade body are made of different metal materials. The hardness of the tooth tip is greater than that of the saw blade body and tooth root. The new method of combining two kinds of metal welding makes the tooth tip of the sawtooth have higher hardness, improves cutting performance and service life, greatly improves cutting efficiency, good cutting quality, can cut metal and other materials, and has a wide range of applications. At the same time, the hardness of the saw blade body and the saw teeth are different, and the flexibility is increased in the manufacturing process, which not only ensures the toughness of the saw blade body but also ensures that the saw teeth have high enough hardness, and is easy to process and low in cost; in addition, the height of the tooth tip is the height of the saw tooth 1/3 to 2/3 of the sawtooth has better mechanical properties and cutting performance.

Description of drawings:

Fig. 1 is a structural representation of the utility model.

Fig. 2 is a structural schematic diagram of the sawtooth of the present invention.

Detailed ways:

The utility model will be further described below in conjunction with the accompanying drawings, as shown in Figures 1 to 2, the utility model includes a saw blade body 1, the side edge of the saw blade body 1 is continuously arranged with sawtooth 2, and the two ends of the saw blade body 1 are welded on Form a ring structure together. The sawtooth 2 includes a tooth tip 21 and a tooth root 22. The tooth root 22 is integrally formed with the saw blade body 1. The tooth tip 21 is fixedly connected to the tooth root 22 by laser welding. The tooth tip 21 The metal material is different from the saw blade body 1, the hardness of the tooth tip 21 is greater than that of the saw blade body 1 and the tooth root 22, the height of the tooth tip 21 is 1/3~2/3 of the height of the saw tooth 2, and the height of the saw tooth 2 It is 1/10-1/3 of the width of the saw blade body 1, so that the saw tooth 2 has better mechanical properties and cutting performance. In this embodiment, the height of the tip portion 21 is 1.5 mm, the height of the root portion 22 is 1.5 mm, and the width of the saw blade body 1 is 27 mm.

The distance between the saw teeth 2 is unequal distance variable tooth pitch, which is convenient for chip removal.

The hardness of the tooth tip 21 is HRC 68-79 degrees, and the hardness of the saw blade body 1 and the tooth root 22 is HRC 42-43 degrees. In this embodiment, the hardness of the tooth tip 21 is HRC 72 degrees, and the hardness of the saw blade body 1 and tooth root 22 is HRC 43 degrees, which not only ensures the toughness of the saw blade body 1 but also ensures that the saw teeth 2 have a sufficiently high hardness.

The saw teeth 2 are arranged staggered left and right, and the upper parts of each tooth are inclined to the left and right, so that the saw teeth 2 are arranged in a wave shape on the saw blade body 1, so that a saw kerf slightly larger than the thickness of the saw body can be obtained, so that the saw blade is not caught by the sawing material .

The saw blade body 1 and tooth root 22 are made of spring steel or high-carbon tool steel, with suitable hardness and toughness. The material of the tip portion 21 is cemented carbide, which has relatively high hardness and can be used for cutting metal.

The utility model uses two kinds of metal combined welding, so that the tooth tip 21 of the sawtooth 2 has higher hardness, improves the cutting performance and service life, greatly improves the cutting efficiency, has good cutting quality, and can cut metal and other materials. The scope of application is wide, and at the same time, the hardness of the saw blade body 1 and the saw teeth 2 are different, increasing flexibility in the manufacturing process, which not only ensures the toughness of the saw blade body 1 but also ensures that the saw teeth 2 have high enough hardness, and is easy to process and low in cost.

Of course, the above is only a preferred embodiment of the utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the utility model patent application are included in the utility model patent application within range.

Claims (7)

1. bimetal saw blade; It includes saw blade body (1), and a lateral edges of saw blade body (1) is arranged with sawtooth (2) continuously, it is characterized in that: the two ends of said saw blade body (1) are welded together to form circulus; Sawtooth (2) includes crown portion (21) and tooth root portion (22); Tooth root portion (22) and saw blade body (1) structure that is formed in one, crown portion (21) is fixedly connected in the tooth root portion (22) through laser weld, and crown portion (21) is the different metallic material with saw blade body (1); The hardness of crown portion (21) is greater than the hardness of saw blade body (1) and tooth root portion (22), and the height of crown portion (21) is 1/3～2/3 of sawtooth (a 2) height.

2. a kind of bimetal saw blade according to claim 1 is characterized in that: the height of said sawtooth (2) is 1/10～1/3 of saw blade body (a 1) width.

3. a kind of bimetal saw blade according to claim 1 is characterized in that: the distance between said sawtooth (2) becomes the not change tooth pitch of equidistant shape.

4. a kind of bimetal saw blade according to claim 1 is characterized in that: the hardness of said crown portion (21) is HRC 68～79 degree, and the hardness of saw blade body (1) and tooth root portion (22) is HRC 42～43 degree.

5. a kind of bimetal saw blade according to claim 1 is characterized in that: said sawtooth (2) left and right sides interlaced arrangement.

6. a kind of bimetal saw blade according to claim 1 is characterized in that: the material of said saw blade body (1), tooth root portion (22) is spring steel or high carbon tool steel.

7. according to any described a kind of bimetal saw blade of claim 1-6, it is characterized in that: the material of said crown portion (21) is a carbide alloy.

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