Double-relief-angle-tooth alloy band saw blade with tooth breakage resisting function and grinding method

Abstract

The invention discloses a double-relief-angle tooth alloy band saw blade with a tooth breakage resisting function and a grinding method, the double-relief-angle tooth alloy band saw blade comprises sawteeth and a tooth tip welding area, the sawteeth are provided with double relief angles, the double relief angles comprise a first relief angle and a second relief angle, the sawteeth are connected with straps in a welded mode through the welding area, and the double relief angles are located on the upper edge of the saw blade. The tooth tip welding area surrounds the whole front end of the saw blade and is provided with a long extending area inwards. The special double-relief-angle design is adopted, that is, the excellent saw cutting capacity of the large-relief-angle tooth tip cutting edge is kept, and the large-relief-angle tooth tip cutting edge can better cut into a metal material in the cutting process; and a welding area with enough length is reserved, so that the tensile failure resistance of the tooth tip is improved.

Description

Technical Field

[0001] The invention relates to the field of metal cutting tools and is an alloy band saw blade with double back angle teeth and anti-tooth breakage function. Background Art

[0002] In the process of cutting metal materials, alloy band saw blades are one of the commonly used tools. However, because the welding area of ​​the carbide tooth tip is reduced after processing, the weld strength will also decrease accordingly, and the tooth tip is prone to breakage during the cutting process, which not only directly affects the sawing life efficiency, but also may cause damage to the equipment and operators. Therefore, it is of great practical significance to develop an alloy band saw blade with anti-breaking teeth function and stronger impact resistance. Summary of the invention

[0003] Based on this, the purpose of the present invention is to provide a double-back angle tooth alloy band saw blade with anti-tooth breakage function to solve the technical problem that the tooth tip is easily broken during the cutting process.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a double-back angle tooth alloy band saw blade with anti-tooth breakage function, including a front edge of a saw tooth and a tooth tip welding area, the front edge of the saw tooth is provided with a double back angle, the double back angle includes a first back angle and a second back angle, and the front edge of the saw tooth is welded together with the tooth tip welding area.

[0005] Furthermore, the double back angle is located at the upper edge of the saw blade, and the tooth tip welding area surrounds the entire front end of the saw blade and has a long extension area inward.

[0006] Furthermore, the angle between the first rear angle of the double rear angle and the horizontal line is 25-35 degrees, and the angle between the second rear angle of the double rear angle and the horizontal line is 15-20 degrees.

[0007] Furthermore, the double back angle and the edge of the saw blade are at an obtuse angle, and an arc structure is formed between the double back angle and the right edge of the saw blade.

[0008] Furthermore, for the saw blade grinding method, a "T"-shaped grinding wheel is required for grinding, and the bending angle of the outer surface of the grinding wheel matches the bending angle of the teeth at the front end of the saw blade.

[0009] In summary, the present invention mainly has the following beneficial effects: the present invention adopts a special double back angle design, which maintains the large back angle tooth tip edge with excellent sawing ability, and can better cut into the metal material during the cutting process; and retains a welding area of ​​sufficient length, improves the tooth tip's ability to resist breaking, and greatly reduces the probability of tooth breakage.

[0010] The grinding wheel also adopts a double-angle design to achieve precise processing of the saw blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the saw blade structure of the present invention;

[0012] Figure 2 Schematic diagram of the saw blade angle structure of the present invention (arrow indicates the angle range);

[0013] Figure 3 It is a schematic diagram of the structure of the gear grinding wheel of the present invention;

[0014] Figure 4 It is a structural schematic diagram of the gear grinding wheel of the present invention in another state.

[0015] In the figure: 11-sawtooth; 12-double back angle; 121-first back angle; 122-second back angle; 13-tooth tip welding area; 14-shoulder strap. DETAILED DESCRIPTION

[0016] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0017] A double back angle tooth alloy band saw blade with anti-tooth breakage function, such as Figure 1-4 As shown, a 12-tooth alloy band saw blade with double clearance angle and anti-tooth breakage function includes a saw tooth 11 and a tooth tip welding area 13. The saw tooth 11 is provided with a double clearance angle 12, and the double clearance angle 12 includes a first clearance angle 121 and a second clearance angle 122. The saw tooth 11 is welded to the shoulder strap 14 through the tooth tip welding area 13.

[0018] Furthermore, the double back angle 12 is located at the upper edge of the saw blade, and the tooth tip welding area 13 surrounds the entire front end of the saw blade and has a long extension area inward.

[0019] Furthermore, the angle between the first back angle 121 of the double back angle 12 and the horizontal line is 25-35 degrees, and the angle between the second back angle 122 of the double back angle 12 and the horizontal line is 15-20 degrees.

[0020] Furthermore, the double back angle 12 is at an obtuse angle to the edge of the saw blade, and an arc structure is formed between the double back angle 12 and the right edge of the saw blade. This special double back angle 12 design not only maintains the sharp sawing ability of the cutting edge of the first back angle 1211, but also retains a sufficient length of the welding area 3, improves the ability of the tooth tip to resist breaking, and greatly reduces the risk of the saw teeth breaking, which not only improves the cutting efficiency, but also improves the sawing life and enhances the impact resistance of the tooth tip. During the cutting process, even if encountering a harder material magazine or other emergencies, the tooth tip can avoid continuous tooth breaking and maintain good stability and durability.

[0021] The materials of this saw blade are divided into tooth tip material and back strap material. The tooth tip material is a composite material of high hardness and high wear resistance cemented carbide and flux metal; the back strap material is a special steel belt with both strength and toughness. These new materials can further improve the durability and cutting performance of the saw blade.

[0022] For the grinding method of this saw blade, a "T"-shaped gear grinding wheel is used for grinding. The bending angle of the outer surface of the gear grinding wheel matches the bending angle of the saw teeth at the front end of the saw blade. During grinding, the front end of the saw blade contacts the outer surface of the gear grinding wheel. The special double back angle 12 tooth tip design requires a special gear grinding wheel. The double-angle gear grinding wheel design is supplemented by high-precision gear grinding wheel shape processing technology to meet the processing technology requirements. Therefore, we use this "T"-shaped gear grinding wheel.

[0023] It is worth mentioning that the principle of the present invention is mainly based on physics and materials science. Through the special double back angle 12 design, the alloy band saw blade has a higher anti-tooth breakage ability while ensuring sharp sawing ability.

[0024] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A double-back angle tooth alloy band saw blade with anti-tooth breakage function, comprising a saw tooth front edge and a tooth tip welding area, characterized in that: A double back angle is arranged on the front edge of the saw tooth, and the double back angle comprises a first back angle and a second back angle. The front edge of the saw tooth is welded to the tooth tip welding area.

2. The double-back angle tooth alloy band saw blade with anti-tooth breakage function according to claim 1, characterized in that: The double relief is located at the upper edge of the saw blade, and the tip weld area surrounds the entire front end of the saw blade with a long extension area inwards.

3. A double back angle tooth alloy band saw blade with anti-tooth breakage function according to claim 1 or 2, characterized in that: The angle between the first rear angle of the double rear angle and the horizontal line is 25-35 degrees, and the angle between the second rear angle of the double rear angle and the horizontal line is 15-20 degrees.

4. A double-back angle tooth alloy band saw blade with anti-tooth breakage function according to claim 1 or 2, characterized in that: The double back angle and the edge of the saw blade are at an obtuse angle, and an arc structure is formed between the double back angle and the right edge of the saw blade.

5. A method for grinding a double-back angle tooth alloy band saw blade with anti-tooth breakage function according to any one of claims 1 to 4, characterized in that: Use a "T"-shaped grinding wheel for grinding, and the bending angle of the outer surface of the grinding wheel matches the bending angle of the teeth at the front end of the saw blade.

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