A Bimetallic Band Saw Blade with 2/3t Variational Tooth Quantity and Twisted Tooth Profile

A technology of double metal strips and divided teeth, which is applied in the direction of metal sawing equipment, metal processing equipment, manufacturing tools, etc., can solve the problems of low cutting efficiency, poor cutting surface quality, poor chip removal, etc., and achieve improved sawing efficiency. Efficiency, improved cutting surface quality, and smooth chip removal

Active Publication Date: 2020-06-09
LIAONING INST OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a bimetallic band saw blade with 2 / 3T variable tooth amount and twisted tooth shape, which is mainly used for sawing die steel, titanium alloy, nickel-based superalloy, and fully utilizes the torsion angle to increase the rigidity of the divided teeth , in order to overcome the existing double-metal band saw blades when sawing materials with high hardness and elastic modulus, such as pinch saws, poor chip removal, severe tooth tip wear, low cutting efficiency, cracked teeth, Phenomena such as teeth rolling and poor cutting quality

Method used

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  • A Bimetallic Band Saw Blade with 2/3t Variational Tooth Quantity and Twisted Tooth Profile
  • A Bimetallic Band Saw Blade with 2/3t Variational Tooth Quantity and Twisted Tooth Profile
  • A Bimetallic Band Saw Blade with 2/3t Variational Tooth Quantity and Twisted Tooth Profile

Examples

Experimental program
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Effect test

Embodiment 1

[0027] In this embodiment, the tooth rake angle α=10°; two back angles β 1 and beta 2 β 1 = 26°, β 2 =36; Tooth profile angle γ 1 = 54°, γ 2 =44°; maximum tooth depth H 1 =5.5mm, minimum tooth depth H 2 =4.1mm; the radius R of the tooth space 8 of each tooth is different, R=2.4-3.9mm; the maximum tooth distance L 1 =13.1mm, minimum pitch L 2 =9.3mm; Separation tooth height B=2.4mm; Separation amount F of left separation tooth Ⅰ4 1 =0.24mm, the sub-tooth amount F of the left sub-teeth II6 2 =0.40mm, the split tooth amount F of the right split tooth I5 3 =0.40mm, the sub-tooth amount F of the right sub-teeth II7 4 =0.24mm; torsion angle θ=4°; sawing Φ160mm titanium alloy bar takes 20 minutes, and can be sawed continuously for 3 days.

Embodiment 2

[0029] In this embodiment, the tooth rake angle α=10°30'; two back angles β 1 and beta 2 β 1 = 25°30', β 2 =35°30'; Tooth angle γ 1 = 54°, γ 2 =44°; maximum tooth depth H 1 =5.5mm, minimum tooth depth H 2 = 4.1mm; the radius R of the slot 8 of each tooth is different, R = 2.4-3.9mm; the maximum tooth pitch is L 1 =13.2mm, the minimum pitch is L 2 =9.4mm; Separation tooth height B=2.5mm; Separation amount F of left separation tooth Ⅰ4 1 =0.25mm, the sub-tooth amount F of the left sub-teeth II6 2 =0.41mm, the sub-tooth amount F of the right sub-teeth I5 3 =0.41mm, the amount of divided teeth F of the right divided teeth II7 4 =0.25mm; torsion angle θ=5°; sawing Φ160mm titanium alloy bar takes 16 minutes, and can be sawed continuously for 3.5 days.

Embodiment 3

[0031] In this embodiment, the tooth rake angle α=11°; two back angles β 1 and beta 2 β 1 = 25°, β 2 =35°; profile angle γ 1 = 54°, γ 2 =44°; maximum tooth depth H 1 =5.5mm, minimum tooth depth H 2 = 4.1mm; the radius R of the slot 8 of each tooth is different, R = 2.4-3.9mm; the maximum tooth pitch is L 1 =13.3mm, the minimum pitch is L 2 =9.5mm; the sub-tooth amount F of the left sub-teeth I4 1 =0.26mm, the sub-tooth amount F of the left sub-teeth II6 2 =0.42mm, the split tooth amount F of the right split tooth I5 3 =0.42mm, the sub-tooth amount F of the right sub-teeth II7 4 =0.26mm; torsion angle θ=6°; it takes 18 minutes to cut Φ160mm titanium alloy bar, and it can be sawed continuously for 4 days.

[0032] Through three examples, it can be seen that the chip efficiency can be increased by 30%-40% and the service life of the band saw blade can be increased by 20%-30% by using the tooth shape of the invention to cut plates and rods of titanium alloy and nickel-b...

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Abstract

The invention discloses a bimetallic strip saw blade with a 2 / 3T variable-tooth-dividing-amount torsion tooth form. The bimetallic strip saw blade with the 2 / 3T variable-tooth-dividing-amount torsiontooth form comprises a rack body, wherein a plurality of saw teeth are distributed on the rack body; the saw teeth are arranged in groups in the length direction of the rack body; each group of the saw teeth is combined by five divided teeth which are a middle guide tooth, a left divided tooth I, a right divided tooth I, a left divided tooth II and a right divided tooth II separately; the tooth dividing amount of each group of the saw teeth is a variable tooth dividing amount, wherein the tooth dividing amount F1 of the left divided tooth I is equal to 0.24-0.26mm, the tooth dividing amount F2of the left divided tooth II is equal to 0.40-0.42mm, the tooth dividing amount F3 of the right divided tooth I is equal to 0.40-0.42mm, the tooth dividing amount F4 of the right divided tooth II isequal to 0.24-0.26mm, the tooth dividing height B of each group of the saw teeth is equal to 2.4-2.6mm, the torsion angle theta of each divided tooth is equal to 4-6 degrees, a tooth groove formed between each two adjacent divided teeth is arc-shaped, and the radius R of each tooth groove is equal to 2.4-3.9mm. By using the bimetallic strip saw blade with the 2 / 3T variable-tooth-dividing-amount torsion tooth form for cutting plates and rods made from titanium alloy and nickel-based high-temperature alloys, the cutting efficiency can be increased by 30%-40%, and the service life of the strip saw blade is prolonged by 20%-30%.

Description

technical field [0001] The invention belongs to the technical field of cutting tools, and in particular relates to a bimetallic band saw blade with a twisted tooth shape of 2 / 3 variable tooth amount. Background technique [0002] Bimetallic band saw blades are mainly welded by two metal materials. The tip material is high-speed steel, and the tooth back material is spring steel. At present, it is mainly used in pure iron, gray iron, ductile iron, stainless steel, mold steel, carbon steel, titanium Alloy, copper alloy, nickel-based high-temperature alloy and other materials are cut. The structure of the sawed material includes bar, pipe, I-shaped, channel steel and various common shapes. In order to improve the sawing quality and cutting efficiency of bimetal band saw blades and reduce costs, enterprises need to choose different material bimetal band saw blades and different tooth profile parameters when choosing to saw workpieces with different specifications, materials and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23D61/12
Inventor 李贵茂柳艳王子琼吴永儒赵晨
Owner LIAONING INST OF SCI & TECH
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