CN218575156U - Band saw blade - Google Patents
Band saw blade Download PDFInfo
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- CN218575156U CN218575156U CN202222249726.1U CN202222249726U CN218575156U CN 218575156 U CN218575156 U CN 218575156U CN 202222249726 U CN202222249726 U CN 202222249726U CN 218575156 U CN218575156 U CN 218575156U
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- tooth
- saw
- sawtooth
- angle beta
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Abstract
The utility model discloses a band saw blade, including the saw blade body and sawtooth, the sawtooth includes the tooth bottom circular arc of the rake face of tooth portion, back knife face and intermediate junction, tooth portion rake face forms sawtooth anterior angle alpha with the base face, tooth portion back knife face and base face sawtooth relief angle beta, sawtooth relief angle beta is by first sawtooth relief angle beta 1 And a continuous secondary saw tooth relief angle beta 2 Is formed at the second saw tooth back angle beta 2 Greater than the first saw tooth relief angle beta 1 The beneficial effects are that: through a continuous first saw tooth relief angle beta 1 And a second saw tooth relief angle beta 2 The whole saw tooth back angle is increased, the strength of the saw tooth is avoided to be reduced, the friction force between the back cutter face and the processing surface is small, and the saw cutting quality is improvedThe quality of the processed surface of the workpiece is improved, and the durability of the saw teeth and the service life of the saw blade are kept unchanged. The sawteeth have small cutting resistance through a reasonable front angle alpha of the sawteeth, the surface quality of a machined workpiece is improved, and the sawteeth still have good strength and heat dissipation conditions.
Description
Technical Field
The utility model relates to a cutter technical field, in particular to band saw blade with good cutting performance.
Background
In the existing carbon steel cutting, a band saw blade is a common cutting tool, as is well known, the function of a saw tooth back angle is mainly to reduce the friction between a saw tooth back tool surface and a processing surface, the larger the back angle is, the smaller the friction between the saw tooth back tool surface and the processing surface is, the higher the surface quality of a processing workpiece is, the higher the durability of a saw blade is, but the strength of saw teeth is reduced; meanwhile, the back angle of the saw teeth is increased, the strength of the saw teeth is reduced, the teeth breakage is easy to occur, and the service life of the band saw blade is influenced;
the front angle of the widely used band saw blade is 0 degree or 7 degrees, when the front angle is small, the extrusion effect of the cutter on steel is obvious in the cutting process, and the friction at the contact surface is large, so that the cutting force of the cutter on the cut steel is large. When the rake angle is too large, although the contact part friction between the cutter and the steel material is small due to the 'plowing' action of the cutter on the steel material, the cutting force of the cutter on the steel material is reduced, but a large equivalent stress is still generated at the blade due to concentrated stress, so that the strength of the cutter is influenced. The larger the rake angle of the saw teeth, the smaller the cutting resistance, but the strength of the saw teeth is lowered, and the heat dissipation condition is deteriorated, and thus it is seen that the rake angle is neither too large nor too small.
Therefore, the conventional band saw blade has the following disadvantages:
1. the quality of the surface of a processed workpiece is improved, the back angle of the sawteeth is increased, the strength of the sawteeth is reduced, the teeth are easy to collapse, and the service life of a band saw blade is influenced.
2. When the prior front angle is smaller, the friction at the contact surface is larger, the surface quality of a machined workpiece is poorer, and when the front angle is larger, the cutting resistance is smaller, but the strength of the saw teeth is reduced, and the heat dissipation condition is worse.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the technical problem and providing a band saw blade after the increase of sawtooth relief angle, sawtooth intensity does not reduce, is difficult for taking place to collapse the tooth, and machined part surface quality improves.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a band saw blade comprising a blade body and saw teeth, said saw bladeThe tooth includes the tooth bottom circular arc of the rake face, the flank face and the intermediate junction of tooth portion, tooth portion rake face forms sawtooth front angle alpha with the base face, tooth portion flank face forms sawtooth relief angle beta with cutting plane, sawtooth relief angle beta is by first sawtooth relief angle beta 1 And a continuous secondary saw tooth relief angle beta 2 Is formed at the second saw tooth back angle beta 2 Greater than the first saw tooth relief angle beta 1 。
In order to ensure that the tooth back angle is increased and the tooth strength is not reduced, and to prevent tooth breakage, a more preferable embodiment is directed to the tooth back angle system, wherein the first tooth back angle β is set to be smaller than a first tooth back angle β 1 =32.5 ° ± 0.5 °, and the first saw-tooth relief angle β 2 ＝40°±0.5°。
In order to ensure that the sawtooth strength is not reduced, the cutting resistance is small, and the surface quality of a machined workpiece is improved, a more preferable technical scheme is that the sawtooth front angle alpha =6 degrees +/-0.5 degrees.
In order to ensure that the strength of the sawtooth is not reduced and the sawtooth is easy to process and manufacture, a more preferable technical scheme is that the tooth bottom arc is composed of a first tooth bottom arc and a connected second tooth bottom arc.
In order to ensure that the strength of the sawtooth is not reduced and the sawtooth is easy to process and manufacture, a more preferable technical scheme is that the first tooth bottom arc radius r1=3.5mm +/-0.5 mm, and the second tooth bottom arc radius r2=4.5mm +/-0.5 mm.
In order to ensure that the strength of the sawteeth is not reduced and the sawteeth are easy to process and manufacture, the more preferable technical proposal is that the range of the height h of the sawteeth is more than or equal to 5.80mm and less than or equal to 6.2mm.
In order to ensure that the saw band obtains the highest cutting efficiency and the minimum loss, a further preferable technical proposal is that the range of the pitch p of the saw teeth is 13.50mm and p is 16.70mm.
Compared with the prior art, the beneficial effects of the utility model are that: through a continuous first saw tooth relief angle beta 1 And a second saw tooth relief angle beta 2 Make whole sawtooth relief angle increase, avoid the intensity of sawtooth to descend simultaneously, back knife face is little with processing surface friction, has improved the quality of saw cutting, makes the processing surface quality of work piece improve, makes the sawtooth durable moreoverThe degree and the service life of the saw blade are kept unchanged; the sawteeth have small cutting resistance through a reasonable front angle alpha of the sawteeth, the surface quality of a machined workpiece is improved, and the sawteeth still have good strength and heat dissipation conditions.
Drawings
FIG. 1 is an isometric view of the present invention;
FIG. 2 is a front view of the present invention;
fig. 3 is an enlarged view of a portion a in fig. 2 according to the present invention.
In the figure: 1. a blade body; 2. saw teeth; 3. a tooth flank; 4. a circular arc of tooth bottom; 5. a tooth rake surface.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Examples
As shown in fig. 1 and 2, a band saw blade includes a blade body 1 and a saw tooth 2, the saw tooth includes a tooth rake face 5, a flank face 3, and a tooth bottom arc 4 connected to the middle, the tooth rake face 5 forms a saw tooth rake angle α with a base surface, the tooth flank face 3 forms a saw tooth relief angle β with a cutting plane, and the saw tooth relief angle β is defined by a first saw tooth relief angle β 1 And a continuous secondary saw tooth relief angle beta 2 Is formed at the second saw tooth back angle beta 2 Greater than the first saw tooth relief angle beta 1 ；
As shown in fig. 3, specifically, the saw blade body 1 is milled with a profile hob to form saw teeth 2, and the metal cutting band saw blade 1 part according to GB/T21954.1-2008: the term; sawtooth 2 includes tooth portion rake face 5, tooth portion rake face 5 is connected through the smooth transition of tooth bottom circular arc 4 and tooth portion rear knife face 3 of intermediate junction, tooth portion rake face 5 forms sawtooth front angle alpha with the base face, tooth portion rear knife face 3 forms sawtooth rear angle beta with the cutting plane, the base face indicates the plane through the selective point on the cutting edge and perpendicular to back side, sawtooth rear angle beta is by first sawtooth rear angle beta 1 And a continuous secondary saw tooth relief angle beta 2 Is constituted such that said saw tooth relief angle beta passes through said first saw tooth relief angle beta formed by the top of the saw tooth 1 And connecting the second saw tooth relief angle beta 2 Is formed by a continuous first saw tooth back angle beta 1 And a second saw tooth relief angle beta 2 At the first saw tooth relief angle beta 1 The strength of the sawtooth is prevented from being reduced under the unchanged condition, and the second sawtooth back angle beta is increased 2 The whole saw tooth back angle is increased, the friction force between the back tool face and the processing surface is small, the saw cutting quality is improved, the processing surface quality of a workpiece is improved, and the durability of the saw teeth and the service life of the saw blade are kept unchanged;
further, the first saw tooth relief angle β 1 =32.5 ° ± 0.5 °, and the first saw-tooth relief angle β 2 =40 ° ± 0.5 °, specific said first tooth relief angle β of this group 1 And the first saw tooth relief angle beta 2 The parameters of the method can ensure that the back angle beta of the sawtooth is increased, the strength of the sawtooth is not reduced, the sawtooth is not easy to break, the friction force between the back cutter surface and the processing surface is small, the sawing quality is improved, and the processing surface quality of a workpiece is improved;
furthermore, the saw tooth front angle alpha =6 +/-0.5 degrees, and the parameters of the specific saw tooth front angle alpha can ensure that the strength of the saw tooth 2 is not reduced, the cutting resistance is small, and the surface quality of a machined workpiece is improved;
further, the tooth bottom arc 4 is composed of a first tooth bottom arc and a connected second tooth bottom arc, and the saw tooth front angle α and the saw tooth rear angle β are formed by the first tooth bottom arc and the connected second tooth bottom arc 2 And arc transition connection.
Further, the first tooth bottom arc radius r1=3.5mm ± 0.5mm, the second tooth bottom arc radius r2=4.5mm ± 0.5mm, and the parameters of the first tooth bottom arc radius r1 and the second tooth bottom arc radius r2 of the group ensure that the strength of the sawtooth is not reduced and the sawtooth is easy to process and manufacture;
furthermore, the range of the tooth height h of the sawtooth 2 is 5.80 mm-h.ltoreq.6.2 mm, and the parameters of the tooth height h of the sawtooth 2 ensure that the sawtooth strength is not reduced and the sawtooth is easy to process and manufacture;
furthermore, the range of the pitch p of the sawteeth 2 is not less than 13.50mm and not more than 16.70mm, and the parameters of the pitch p of the sawteeth 2 ensure that the strength of the sawteeth is not reduced and the sawteeth are easy to process and manufacture.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (7)
1. The utility model provides a band saw blade, includes the saw blade body and sawtooth, the sawtooth includes the tooth bottom circular arc of the rake face, the flank face and the intermediate junction of tooth portion, tooth portion rake face forms sawtooth front angle alpha with the base face, tooth portion flank face forms sawtooth relief angle beta with cutting plane, a serial communication port, sawtooth relief angle beta is by first sawtooth relief angle beta 1 And a continuous secondary saw tooth relief angle beta 2 Is formed at the second saw-tooth relief angle beta 2 Greater than said first saw tooth relief angle beta 1 。
2. A band saw blade according to claim 1, wherein said first tooth relief angle β 1 =32.5 ° ± 0.5 °, said first saw tooth relief angle β 2 ＝40°±0.5°。
3. A band saw blade according to claim 2, characterized in that said saw tooth rake angle α =6 ° ± 0.5 °.
4. A band saw blade according to claim 3, wherein said tooth bottom arc is formed by a first tooth bottom arc and a connecting second tooth bottom arc.
5. A band saw blade according to claim 4, wherein said first tooth bottom arc radius r1=3.5mm ± 0.5mm, and said second tooth bottom arc radius r2=4.5mm ± 0.5mm.
6. A band saw blade according to claim 5, wherein said saw teeth have a tooth height h in the range of 5.80mm ≦ h ≦ 6.2mm.
7. A band saw blade according to claim 6, where said saw teeth have a pitch p in the range 13.50mm p 16.70mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222249726.1U CN218575156U (en) | 2022-08-25 | 2022-08-25 | Band saw blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222249726.1U CN218575156U (en) | 2022-08-25 | 2022-08-25 | Band saw blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218575156U true CN218575156U (en) | 2023-03-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222249726.1U Active CN218575156U (en) | 2022-08-25 | 2022-08-25 | Band saw blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218575156U (en) |
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2022
- 2022-08-25 CN CN202222249726.1U patent/CN218575156U/en active Active
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