CN111283266A - Split-tooth type band saw blade - Google Patents
Split-tooth type band saw blade Download PDFInfo
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- CN111283266A CN111283266A CN202010254115.9A CN202010254115A CN111283266A CN 111283266 A CN111283266 A CN 111283266A CN 202010254115 A CN202010254115 A CN 202010254115A CN 111283266 A CN111283266 A CN 111283266A
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- band saw
- saw
- tooth
- teeth
- band
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- 238000005520 cutting process Methods 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims description 11
- 238000012545 processing Methods 0.000 abstract description 7
- 238000003754 machining Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
- B23D61/12—Straight saw blades; Strap saw blades
- B23D61/126—Straight saw blades; Strap saw blades having cutting teeth along both edges
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sawing (AREA)
Abstract
The invention discloses a split-tooth type band saw blade, which comprises a band saw body (A) and saw teeth arranged on the band saw body according to a period, wherein one arrangement period comprises at least one straight saw tooth, at least one left-biased saw tooth and at least one right-biased saw tooth; the band saw is characterized in that the side corner cutting edge (B) of each left partial sawtooth and each right partial sawtooth is parallel to the outer surface of the band saw body (A). The band saw blade of the invention keeps the special advantages of a toothed band saw blade, such as preventing the band saw blade from being clamped; an excellent smooth cutting surface is obtained on the basis again, and the subsequent processing amount is reduced; but also can reduce the width of the saw kerf to a certain extent and improve the yield.
Description
Technical Field
The invention relates to a split-tooth type band saw blade, and belongs to the technical field of saw cutting metal cutters.
Background
The band saw blade generates cutting heat during the cutting process, and the cutting heat can cause the cut material and the band saw blade to generate the physical effect of expansion with heat and contraction with cold. When the thermal expansion effect occurs, the cut material expands causing the kerf to become smaller and the saw band to become larger. In addition, some materials to be cut can generate internal stress due to the cooling process or the material problem during the manufacturing process, and the internal stress is released during the cutting process, so that the cutting seam becomes smaller and the saw blade is clamped. In order to prevent the saw blade from being stuck in the cutting process, the teeth are offset to generate a certain tooth dividing amount in the manufacturing process of the traditional bimetal band saw blade, so that the width of the cut kerf is larger than the thickness of the band saw body (base material), as shown in fig. 1-3. Fig. 1 to 3 show a typical tooth separation manner of a bimetal band saw blade, in which a reference line L is a reference line for forming a bias (tooth separation), five adjacent teeth arranged in sequence on a band saw substrate are arranged in one arrangement period, a first saw tooth 1 in one arrangement period is a straight saw tooth, a second saw tooth 2 and a fourth saw tooth 4 are left-biased saw teeth, and a third saw tooth 3 and a fifth saw tooth 5 are right-biased saw teeth. The tooth dividing modes of other types of tooth dividing type saw blades basically exist in the mode, and only parameters such as the number of sawteeth, the tooth height, the tooth dividing angle, the tooth dividing amount and the like can be different in one arrangement period.
As is apparent from fig. 2 and 3, the left and right partial teeth form a sharp corner extending out of the blade body as the teeth are biased. These sharp corners act as cutting edges during the cutting process and create a micro-rough texture on the work surface as shown in figure 4. In addition, in the band saw blade machining process, manufacturing errors exist in tooth dividing amount, tooth dividing angle and the like, and the cross section of the microcosmic textures after actual machining is more shallow and inconsistent in size, namely the cutting cross section is rougher, and even has a wavy shape. Therefore, based on the current design and processing method, the machined section of the tooth-division type saw blade inevitably has textures with different depths and sizes, namely the achievable surface roughness is limited. The larger the amount of indexing, the worse the indexing accuracy, and the rougher the cutting surface obtained.
With the development of the band saw blade industry, the requirements on the roughness of the machined section are higher and higher in some occasions, such as part of noble metals and non-metal materials (such as foam sponge, graphite and the like), on one hand, the width of a saw slot is required to be reduced, the yield is increased, on the other hand, the better quality of the machined surface is required, and the subsequent machining amount is reduced. The technical problem to be solved urgently is that the tooth-dividing type band saw blade is required to be solved.
Disclosure of Invention
In order to reduce the roughness of the processing surface of the sub-tooth type band saw blade and reduce the width of a saw slot, the invention provides a band saw blade, and the specific technical scheme is as follows.
A toothed band saw blade comprises a band saw body and saw teeth which are arranged on the band saw body according to a period, wherein at least one straight saw tooth, at least one left-hand saw tooth and at least one right-hand saw tooth are arranged in one arrangement period; the band saw is characterized in that the side corner cutting edge of each left partial sawtooth and each right partial sawtooth is parallel to the outer surface of the band saw body.
By adopting the technical scheme, the side angle cutting edges of the left deflection saw teeth and the right deflection saw teeth are parallel to the outer surface of the band saw body, and the machined surface can be ensured to be a smooth plane parallel to the outer surface of the band saw body as long as the feeding speed of the band saw blade is controlled; compared with the left-hand side sawtooth and the right-hand side sawtooth in the prior art, the tooth dividing amount of the left-hand side sawtooth and the right-hand side sawtooth is smaller under the condition of the same deflection amount, so that the width of a smaller saw slot is facilitated, the cutting amount is less, and the yield is improved.
Further, the side corner cutting edges of all the right-hand sawtooth are positioned in the same plane, and the side corner cutting edges of all the left-hand sawtooth are positioned in the same plane.
Further, the outer side of a sharp corner of each left partial sawtooth and each right partial sawtooth is a plane, and the plane is parallel to the outer surface of the band saw body.
Furthermore, the plane outside the sharp corner is processed by grinding the left and right partial saw teeth after the tooth dividing processing is finished. And properly grinding the outer part with the sharp corner by adopting a grinding and flattening processing mode to form a plane, thereby obtaining a side corner cutting edge parallel to the outer surface of the band saw body.
Furthermore, five adjacent teeth arranged in sequence on the band saw body are an arrangement period, a first sawtooth in the arrangement period is a straight sawtooth, a second sawtooth and a fourth sawtooth are left-hand sawtooth, and a third sawtooth and a fifth sawtooth are right-hand sawtooth.
Furthermore, the length of the side corner cutting edge in the height direction of the band saw body is W, and two adjacent arrangement periodsThe minimum distance between the inner left-offset sawteeth is LLMINThe minimum distance between the right-hand sawtooth in two adjacent arrangement periods is LRMINWhen the sub-toothed band saw blade is sawed, the band saw body moves by LRMINWithin the time, the feeding distances of the band saw body relative to the cut material are respectively DfRMAXBand saw body movement LLMINWithin the time, the feeding distances of the band saw body relative to the cut material are respectively DfLMAX(ii) a And W>=DfRMAX， W>=DfLMAX. Whereby a smooth cutting surface can be ensured.
Compared with the prior art, on one hand, the special advantages of the toothed band saw blade are kept, for example, the band saw blade is prevented from being clamped; on the other hand, an excellent smooth cutting surface can be obtained, and the subsequent processing amount is reduced; and the reduction of the tooth dividing amount can reduce the width of the saw slot to a certain extent, and the yield is improved.
Drawings
FIG. 1 is a front view of a prior art band saw blade;
FIG. 2 is a top view of a prior art band saw blade;
FIG. 3 is a side view of a prior art band saw blade;
FIG. 4 is a schematic view of a prior art band saw blade;
FIG. 5 is a front elevational view of the band saw blade of the present invention;
FIG. 6 is a top view of the band saw blade of the present invention;
FIG. 7 is a side view of the band saw blade of the present invention.
Detailed Description
The present invention is described in further detail below with reference to the attached drawing figures.
Referring to fig. 5-7, the toothed band saw blade includes a band saw body a and saw teeth periodically arranged on the band saw body a, in one arrangement period, the first saw teeth 1 are straight saw teeth, the second saw teeth 2 and the fourth saw teeth 4 are left-hand saw teeth, the third saw teeth 3 and the fifth saw teeth 5 are right-hand saw teeth, and side corner cutting edges B of each left-hand saw tooth and each right-hand saw tooth are parallel to the outer surface of the band saw body a; the side corner cutting edges of all right-hand sawtooth are positioned in the same plane, and the side corner cutting edges of all left-hand sawtooth are positioned in the same plane. The side comer edge B may be straight or curved.
Preferably, the outer side of the sharp corner of each of the left and right partial saw teeth is a plane parallel to the outer surface of the band saw body A. The plane is obtained by grinding after the left-hand sawtooth and the right-hand sawtooth finish the tooth dividing processing, and when the plane finishes the processing, a side corner cutting edge B parallel to the outer surface of the band saw body A is naturally formed. The machining of the indexing may be performed by a conventional technique, for example, by the indexing machining apparatus and method disclosed in patent document 1 (publication No. CN 203091875U). It should be noted that, in order to form the side corner cutting edge B parallel to the outer surface of the band saw body a, after the left-hand saw teeth and the right-hand saw teeth are finished with the teeth dividing process, the side corner cutting edge B is processed in a flat grinding mode, and the outer side of the flat ground sharp corner may not be parallel to the outer surface of the band saw body a, as long as the side corner cutting edge B can be ensured to be parallel to the outer surface of the band saw body a.
In order to obtain a smooth cut surface, the length of the side corner edge in the height direction of the band saw body a is W (the height direction is perpendicular to the extending direction and the thickness direction of the band saw body a), and W should satisfy a certain condition. Specifically, the front and rear tooth textures at the same position on the cutting side are connected during the feeding of the band saw blade relative to the material to be cut. Taking the split-tooth band saw blade of fig. 7 as an example, it is set that:
1) the feeding speed for cutting the band saw blade is f mm/min (the moving speed of the band saw blade in the height direction), and the moving linear speed is s mm/min (the moving speed of the band saw blade in the extension direction);
2) the distance from the first sawtooth 1 to the first sawtooth 2 is L1The distance from the second saw tooth 2 to the third saw tooth 3 is L2The distance from the third saw tooth 3 to the fourth saw tooth 4 is L3The distance from the fourth saw tooth 4 to the fifth saw tooth 5 is L4The distance from the fifth sawtooth 5 to the first sawtooth 1 is L5。
The right-biased sawtooth in one arrangement period is spaced apart from the minimum distance L of the right-biased sawtooth in the next arrangement periodRMINComprises the following steps: l isRMIN=L5+L1+L2(ii) a The left partial sawtooth in one arrangement period is separated from the minimum distance L of the left partial sawtooth in the next arrangement periodLMINComprises the following steps: l isLMIN=L4+L5+L1；
At blade movement LRMIN、LLMINDuring the time of (2), the saw blade is fed by a distance D relative to the material to be cutfRMAX、DfLMAX：
DfRMAX=LRMIN/s*f
DfLMAX=LLMIN/s*f；
In order to make the front and back sawtooth texture can link to each other, the length W of side angle blade in the direction of height of band saw body A satisfies:
W>=DfRMAXand W>=DfLMAX。
It should be noted that: the above embodiment takes the 5 saw teeth as an example of the sub-tooth type band saw blade with one arrangement period, and in fact, the technical scheme of the invention is applicable to various types of sub-tooth type band saw blades.
The embodiments of the present invention are described above with reference to the drawings, and the embodiments and features of the embodiments of the present invention may be combined with each other without conflict. The present invention is not limited to the above-described embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many modifications without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (6)
1. A toothed band saw blade comprises a band saw body (A) and saw teeth arranged on the band saw body according to a period, wherein at least one straight saw tooth, at least one left-biased saw tooth and at least one right-biased saw tooth are arranged in one arrangement period; the band saw is characterized in that the side corner cutting edge (B) of each left partial sawtooth and each right partial sawtooth is parallel to the outer surface of the band saw body (A).
2. The split-tooth band saw blade according to claim 1, wherein the side corner edges (B) of all said right partial saw teeth are located in the same plane, and the side corner edges (B) of all said left partial saw teeth are located in the same plane.
3. The split-tooth band saw blade according to claim 1, wherein a sharp outer side of each of said left and right partial saw teeth is a plane parallel to an outer surface of said band saw body (a).
4. The split-tooth band saw blade according to claim 3, wherein the plane outside the sharp corner is processed by grinding after the left and right partial saw teeth are processed by splitting.
5. The split-teeth band saw blade according to claim 1, wherein five teeth arranged adjacently and sequentially on the band saw body are an arrangement period, a first saw tooth in the arrangement period is a straight saw tooth, a second saw tooth and a fourth saw tooth are left-hand saw teeth, and a third saw tooth and a fifth saw tooth are right-hand saw teeth.
6. The split-tooth band saw blade according to claim 1, wherein the length of the side corner cutting edge (B) in the height direction of the band saw body is W, and the minimum distance between the left-side teeth in two adjacent arrangement periods is LLMINThe minimum distance between the right-hand sawtooth in two adjacent arrangement periods is LRMINWhen the sub-toothed band saw blade is sawed, the band saw body moves by LRMINWithin the time, the feeding distances of the band saw body relative to the cut material are respectively DfRMAXBand saw body movement LLMINWithin the time, the feeding distances of the band saw body relative to the cut material are respectively DfLMAX(ii) a And W>=DfRMAX， W>=DfLMAX。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010254115.9A CN111283266B (en) | 2020-04-02 | 2020-04-02 | Split-tooth type band saw blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010254115.9A CN111283266B (en) | 2020-04-02 | 2020-04-02 | Split-tooth type band saw blade |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111283266A true CN111283266A (en) | 2020-06-16 |
| CN111283266B CN111283266B (en) | 2021-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010254115.9A Active CN111283266B (en) | 2020-04-02 | 2020-04-02 | Split-tooth type band saw blade |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH091422A (en) * | 1995-06-16 | 1997-01-07 | Toshio Aono | Curved surface tip saw |
| EP1053815A2 (en) * | 1999-05-21 | 2000-11-22 | Kapman AB | Saw blade with recurring goups of teeth of different height and width for smooth cut |
| JP2003231018A (en) * | 2002-02-07 | 2003-08-19 | Tsune Wagner Carbide Co Ltd | Circular saw |
| FR2921283A1 (en) * | 2007-09-21 | 2009-03-27 | Sermas Ind Soc Par Actions Sim | Cutting blade for sawing .g. aluminum blocks in industrial application, has sawing and polishing teeth distributed along edge of body, and patches for forming respective stops tangent to plane parallel to running and penetrating directions |
| CN202317267U (en) * | 2011-11-04 | 2012-07-11 | 本溪工具有限责任公司 | Wide-tooth-space band saw blade |
| JP2015098069A (en) * | 2013-11-19 | 2015-05-28 | 株式会社アマダ | Saw tooth and cutting method of cut material using saw tooth |
| CN205218205U (en) * | 2015-12-17 | 2016-05-11 | 李健江 | Grinding saw blade |
| CN205218203U (en) * | 2015-12-17 | 2016-05-11 | 李健江 | Saw blade |
| CN206632459U (en) * | 2017-04-20 | 2017-11-14 | 佛山市顺德区林克锯业有限公司 | A kind of staggered offset inset type alloy saw blade |
| CN208230984U (en) * | 2017-12-29 | 2018-12-14 | 杭州西姆森机械有限公司 | A kind of bi-metal bandsaw blades for cutting die steel |
-
2020
- 2020-04-02 CN CN202010254115.9A patent/CN111283266B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH091422A (en) * | 1995-06-16 | 1997-01-07 | Toshio Aono | Curved surface tip saw |
| EP1053815A2 (en) * | 1999-05-21 | 2000-11-22 | Kapman AB | Saw blade with recurring goups of teeth of different height and width for smooth cut |
| JP2003231018A (en) * | 2002-02-07 | 2003-08-19 | Tsune Wagner Carbide Co Ltd | Circular saw |
| FR2921283A1 (en) * | 2007-09-21 | 2009-03-27 | Sermas Ind Soc Par Actions Sim | Cutting blade for sawing .g. aluminum blocks in industrial application, has sawing and polishing teeth distributed along edge of body, and patches for forming respective stops tangent to plane parallel to running and penetrating directions |
| CN202317267U (en) * | 2011-11-04 | 2012-07-11 | 本溪工具有限责任公司 | Wide-tooth-space band saw blade |
| JP2015098069A (en) * | 2013-11-19 | 2015-05-28 | 株式会社アマダ | Saw tooth and cutting method of cut material using saw tooth |
| CN205218205U (en) * | 2015-12-17 | 2016-05-11 | 李健江 | Grinding saw blade |
| CN205218203U (en) * | 2015-12-17 | 2016-05-11 | 李健江 | Saw blade |
| CN206632459U (en) * | 2017-04-20 | 2017-11-14 | 佛山市顺德区林克锯业有限公司 | A kind of staggered offset inset type alloy saw blade |
| CN208230984U (en) * | 2017-12-29 | 2018-12-14 | 杭州西姆森机械有限公司 | A kind of bi-metal bandsaw blades for cutting die steel |
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| Publication number | Publication date |
|---|---|
| CN111283266B (en) | 2021-11-30 |
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