CN205043261U - Bands for band of cutting light -wall pipe - Google Patents

Abstract

(B, ) the utility model relates to a bands for band of cutting light -wall pipe, this bands for band are provided with notch cuttype sawtooth, two the arc back of tooth type sawtooth series arrangement in four adjacent pitches to and common type sawtooth. This bands for band utilizes the depth of cut of notch cuttype sawtooth cutting material controllable on the one hand, can avoid near light -wall pipe incision to be out of shape and the damage prong, and on the other hand utilizes the rigidity and the tensile strength of arc back of tooth type sawtooth prong, can solve the problem of saw cutting high rigidity, high plastic material thin wall tubular product. (B, )

Description

The bands for band of cutting light-wall pipe

Technical field

the utility model relates to a kind of bands for band for cutting light-wall pipe.

Background technology

bands for band is when cutting light-wall pipe, sawtooth tip on it directly contacts with the tube wall of thin-wall pipes and applies certain pressure and could be cut off, if light-wall pipe is made up of high rigidity, high-ductility material, and the bands for band for cutting this kind of light-wall pipe adopts simple notch cuttype sawtooth, because the tip portions rigidity of notch cuttype saw is poor, so, this kind of bands for band sawing this kind of light-wall pipe is adopted easily to make crown stress deformation, thus cause crown to damage, the service life of meeting influence zone saw blade; In addition, because this kind of bands for band is in the process of sawing, the wearing and tearing of cutting edge can be accelerated, distortion near light-wall pipe otch is easily caused to make cutting shoulder along narrowing, chucking power and twisting resistance can be produced to sawtooth tip, easily there is spring tooth phenomenon during sawtooth point major injury, also can affect the quality of light-wall pipe and other work piece.

applicant on November 4th, 2011 notification number to Chinese patent application be 202317266U, name is called, and " for cutting the bimetal bandsaw of light-wall pipe " provides a solution.The body edges of this band saw has milled out stairstepping tooth, being provided with in one end of this stairstepping tooth is highly the crown of 0.35-0.6 millimeter, and relief angle is 12-28 degree.Its meaning is that to want to utilize the mode of adjustment stairstepping tooth crown angle to solve crown easily damaged, and the problem such as chucking power and twisting resistance is produced to sawtooth tip, but due in the process of cutting high rigidity, high-ductility material thin wall pipe, crown because of sawtooth is axial and radial width is all relatively little, even if by the angle adjustment of crown front-and-back angle to best, also easily crown elastic bending is made in the process of light-wall pipe described in sawing, and also there is the possibility of spring tooth, so this kind of band saw is not suitable for the thin-wall pipes cutting high rigidity, high-ductility.

Summary of the invention

the purpose of this utility model is to provide a kind of bands for band of cutting light-wall pipe utilizing the mode of adjustment zigzag fashion to solve cutting high rigidity, the fragile problem of high-ductility material thin wall pipe.

the bands for band of the cutting light-wall pipe that the utility model proposes comprises annular saw band and is arranged on the sawtooth in saw band, described sawtooth is provided with notch cuttype sawtooth and two curved tooth back type sawtooth to order arrangement in adjacent four pitches, and plain edition sawtooth, described notch cuttype sawtooth is provided with location division, be provided with in the end of location division is highly 0.25-0.6 millimeter crown, and the anterior angle of crown is set to 3-12 degree, relief angle is set to 12-25 degree.

a point tooth amount for described crown is 0.25-0.6 millimeter.

the angle of wedge of described sawtooth is set to 60-75 degree.This angle of wedge refer to point front flank and below between angle.

sawtooth in the bands for band of the cutting light-wall pipe that the utility model proposes adopts notch cuttype sawtooth and two curved tooth back type sawtooth, and the structure of plain edition sawtooth, in the process with its cutting light-wall pipe, notch cuttype sawtooth is controlled from its degree of depth of light-wall pipe surface penetration of a cutting tool, then by curved tooth back type sawtooth and plain edition sawtooth, light-wall pipe is cut off successively, so, this bands for band on the one hand notch cuttype sawtooth can be avoided being out of shape near light-wall pipe otch and damaging its crown (spring tooth), on the other hand because the crown of curved tooth back type sawtooth has rigidity and tensile strength, sawing high rigidity can be solved, the problem of the thin-wall pipes of high-ductility material, in addition, the numerical value that point tooth amount of this band saw, little crown height, anterior angle, relief angle, the angle of wedge can be different according to the material different choice of sawing.

accompanying drawing illustrates:

accompanying drawing 1 is the bands for band one section of integrally-built schematic front view of the cutting light-wall pipe that the utility model proposes;

accompanying drawing 2 is the schematic top plan view of amplifying in Fig. 1;

accompanying drawing 3 is the schematic front view in Fig. 1 after one group of serrated portion amplification;

accompanying drawing 4 is that schematic diagram is looked on the left side after Fig. 1 serrated portion is amplified.

detailed description of the invention:

see Fig. 1 to Fig. 4, these 4 accompanying drawings provide the partial appearance structural representation of an embodiment of the bands for band for cutting light-wall pipe that the utility model proposes.The sawtooth that this bands for band comprises annular saw band 1 and is arranged in annular saw band 1, sawtooth given by the present embodiment is tactic in adjacent four pitches is provided with notch cuttype sawtooth 2, two curved tooth back type sawtooth 3, and plain edition sawtooth 4, wherein, the height that notch cuttype sawtooth 2 comprises location division 21 and is arranged on end, location division 21 is the crown 22 of 0.4 millimeter, and the anterior angle γ of crown 22 is 10 degree, relief angle α is 22 degree, and a point tooth amount for crown 22 is 0.3 millimeter; In addition, the angle of wedge β of curved tooth back type sawtooth 3 and plain edition sawtooth 4 is 65 degree.

for this bands for band, can height, the angle of sawtooth be set according to the material of institute's sawing and divide tooth amount, under normal conditions, crown 22 height of end, notch cuttype sawtooth 2 location division 21 can be set to 0.25-0.6 millimeter, anterior angle is 3-12 degree, relief angle is 12-25 degree, and a point tooth amount for crown 22 is set to 0.25-0.6 millimeter, and the angle of wedge can be set to 60-75 degree.

Claims (3)

1. the bands for band of cutting light-wall pipe, this bands for band comprises annular saw band and is arranged on the sawtooth in saw band, it is characterized in that: described sawtooth is provided with notch cuttype sawtooth and two curved tooth back type sawtooth to order arrangement in adjacent four pitches, and plain edition sawtooth, described notch cuttype sawtooth is provided with location division, being provided with in the end of location division is highly 0.25-0.6 millimeter crown, and the anterior angle of crown is set to 3-12 degree, and relief angle is set to 12-25 degree.

2. bands for band according to claim 1, is characterized in that: a point tooth amount for described crown is 0.25-0.6 millimeter.

3. bands for band according to claim 1, is characterized in that: the angle of wedge of described sawtooth is set to 60-75 degree.