CN102145412B - Grinding-free method for forming double-metal band sawtooth at one time through laser cutting - Google Patents
Grinding-free method for forming double-metal band sawtooth at one time through laser cutting Download PDFInfo
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- CN102145412B CN102145412B CN 201110072170 CN201110072170A CN102145412B CN 102145412 B CN102145412 B CN 102145412B CN 201110072170 CN201110072170 CN 201110072170 CN 201110072170 A CN201110072170 A CN 201110072170A CN 102145412 B CN102145412 B CN 102145412B
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- 238000003698 laser cutting Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000002184 metal Substances 0.000 title abstract description 4
- 238000000227 grinding Methods 0.000 claims abstract description 19
- 238000005520 cutting process Methods 0.000 claims abstract description 15
- 239000002131 composite material Substances 0.000 claims abstract description 11
- 229910000997 High-speed steel Inorganic materials 0.000 claims abstract description 6
- 229910000639 Spring steel Inorganic materials 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 3
- 239000007789 gas Substances 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000013307 optical fiber Substances 0.000 claims 2
- 229910000831 Steel Inorganic materials 0.000 abstract description 8
- 239000010959 steel Substances 0.000 abstract description 8
- 238000003754 machining Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000003801 milling Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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Abstract
The invention relates to a grinding-free method for forming a double-metal band sawtooth at one time through laser cutting. The method comprises the following steps of: selecting a laser with appropriate power and laser beam wavelength, and a focus lens with a specific focal length according to the material properties of high-speed steel and composite steel bands of spring steel and focusing to reduce a far-field divergence angle of a laser beam, and acquiring the focus depth of the laser beam which is greater than the thickness of the material to eliminate the taper and the circular arc in the cutting direction; and adjusting a cutting speed, auxiliary air pressure and clearance between a focal point and a surface to improve slagging capacity and a cooling speed of a cutting surface, and reduce and eliminate the hot influence area. The sawtooth is formed at one time by laser cutting, the grinding is not needed, the procedure flow is shortened, the production efficiency is improved, the machining cost is reduced, and the product quality is improved.
Description
Technical field
The present invention relates to incisory bimetal saw blade sawtooth laser cutting shaping technology.
Background technology
Existing band saw tooth adopts milling machine Milling Process or laser cutting moulding by raw material (bimetallic composite steel band) by flute profile, and its technological process is: bimetallic composite steel band → laser cutting (or milling) profile of tooth → heat treatment → grinding (mill teeth does not grind) → minute tooth → finished product; That is prior art has two kinds of machining paths for the bi-metal bandsaw blades tooth Profile Machining, and a kind of is the Metal Cutting Machine Tool Milling Process, though this method is traditional handicraft, but because milling amount is excessive, make its long processing time, efficient is low and cutter life is short, defectives such as cost height for big profile of tooth; Another kind is Laser cutting, and existing laser cutting parameter all leaves the dark heat affected area of 0.1-0.30mm at cut surface, and presents certain tapering or circular arc in cut direction.The intrinsic characteristic of metal material has been destroyed in described heat affected area, has influence on sawtooth cutting edge physical property after the heat treatment; Tapering on cut direction and circular arc then directly have influence on the precision of profile of tooth.Therefore, must remove heat affected area, tapering and circular arc by grinding, could guarantee the specification requirement such as performance, precision of product, this has not only increased production process and cost, also extends manufacture cycle, reduces production efficiency etc.
Technical scheme of the present invention is that described laser cutting bimetallic strip sawtooth does not have grinding once-forming method and comprises:
(1) according to the physical characteristic of high-speed steel and spring steel composite material, select for use the gain media of appropriate power long, coupling efficiency is high, output laser beam quality good and output wavelength wide ranges (400～3400nm) light pricker laser instrument;
(2) select for use the long-focus focus lamp to focus on, reducing the far-field divergence angle of laser beam, and obtain the laser beam depth of focus size greater than the material thickness size, eliminate tapering and circular arc on the cut direction;
(3) regulate cutting speed and assist gas pressure, strengthen the cooling velocity of deslagging ability and cut surface, reduce or eliminate the heat affected area;
(4) regulate the position of focal beam spot to the thickness of workpiece direction apart from last plane 1/3, to improve cutting efficiency, improve profile accuracy (referring to Fig. 1).
Below the present invention made further specify.
The present invention is on present widely used laser cutting machine basis, according to machined material material and thickness, adjust and select for use light-source system, laser beam feature and process targetedly, the heat affected area of cut surface and tapering, the circular arc of cut direction have been eliminated, make the tooth Profile Machining once-forming, removed the grinding process that present laser cutting profile of tooth needs from; Its technological process is: bimetallic composite steel band → laser cutting profile of tooth → minute tooth → heat treatment → finished product.
As known from the above, the present invention does not have grinding once-forming method for a kind of laser cutting bimetallic strip sawtooth, it adopts laser cutting once-forming sawtooth, need not grinding, reduce process flow, enhanced productivity, reduced the machined cost, avoid defectives such as machined burr, pawl simultaneously, improved product quality.
Description of drawings
Fig. 1 is the laser cutting schematic diagram, also is in the step (4), and focal beam spot is transferred to thickness of workpiece H direction apart from the schematic diagram of position, 1/3 left and right sides, last plane.In the drawings:
The 1-laser instrument, the 2-laser beam, the 3-speculum,
The 4-convex lens, the 5-nozzle.
The specific embodiment
Embodiment 1: do not have grinding once-forming method according to described sawtooth profile of tooth laser cutting and produce saw blade, raw material are that the back is that spring steel, tooth portion are the bimetallic composite steel band of high-speed steel M42, and the cutting technique condition enactment is:
(1) presses the attribute of saw blade raw material bimetallic composite steel band, determine that by testing best light beam wavelength is that 1064nm, power are the light pricker laser instrument of 2000W;
(2) select for use 190mm focal length focus lamp to focus on, obtain the spot diameter and the depth of focus that is approximately 1.6mm of 0.10mm;
(3) cutting speed is 3m/min-8m/min; Assist gas is oxygen (O
2), pressure is 0.3MPa-0.8Mpa;
(4) the downward 0.5mm in focal beam spot plane on workpiece place (defocusing amount-0.5mm).
With this technology cutting profile of tooth, meet the specification requirement of not grinding.
Embodiment 2: do not have the saw blade that grinding once-forming method is produced wide 67mm, thick 1.6mm according to described sawtooth profile of tooth laser cutting, raw material are that the back is that spring steel, tooth portion are the bimetallic composite steel band of high-speed steel M42, and the cutting technique condition is:
(1) for 1.6mm thick spring steel and high-speed steel M42 composite steel band, selecting light beam wavelength for use is that 1064nm, power are the light pricker laser instrument of 2000W;
(2) the focus lamp focal length is selected 190mm for use;
(3) for the composite wood of 67mm * 1.6mm specification, cutting speed is 3m/min-10m/min; Assist gas is oxygen (O
2), assist gas pressure is 0.3MPa-0.8Mpa;
(4) for thick 1.6mm band, defocusing amount is-0.5mm.
The invention has the advantages that the heat affected area of having eliminated existing laser cut and tapering, the circular arc of cut direction, make to need not grinding again by the tooth Profile Machining once-forming.This technology is through trial cut repeatedly, the profile accuracy of sample, heat affected area through check, analyze, adhere to specification.
Claims (7)
1. a laser cutting bimetallic strip sawtooth does not have grinding once-forming method, it is characterized in that it comprises:
(1) according to the physical characteristic of high-speed steel and spring steel composite material, selecting the output wavelength scope for use is the optical fiber laser of 400 nm～3400nm;
(2) select for use the long-focus focus lamp to focus on, reducing the far-field divergence angle of laser beam, and obtain the laser beam depth of focus size greater than the material thickness size, eliminate tapering and circular arc on the cut direction; The focal length of described focus lamp is 190mm.
(3) regulate cutting speed and assist gas pressure, to strengthen the cooling velocity of deslagging ability and cut surface, reduce or eliminate the heat affected area;
(4) adjust focal beam spot to the position of thickness of workpiece direction apart from last plane 1/3 thickness of workpiece, to improve cutting efficiency, improve profile accuracy.
2. do not have grinding once-forming method according to the described laser cutting bimetallic strip of claim 1 sawtooth, it is characterized in that, described optical fiber laser light beam wavelength is that 1064nm, power are 2000W.
3. do not have grinding once-forming method according to the described laser cutting bimetallic strip of claim 1 sawtooth, it is characterized in that, described focal beam spot diameter is 0.10mm.
4. do not have grinding once-forming method according to the described laser cutting bimetallic strip of claim 1 sawtooth, it is characterized in that, the depth of focus of described laser beam is 1.6mm.
5. do not have grinding once-forming method according to the described laser cutting bimetallic strip of claim 1 sawtooth, it is characterized in that, described cutting speed is 3m/min-8m/min.
6. do not have grinding once-forming method according to the described laser cutting bimetallic strip of claim 1 sawtooth, it is characterized in that, described assist gas is oxygen, and assist gas pressure is 0.3MPa-0.8 Mpa.
7. do not have grinding once-forming method according to the described laser cutting bimetallic strip of claim 1 sawtooth, it is characterized in that, the downward 0.5mm in described focal beam spot plane on workpiece place.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110072170 CN102145412B (en) | 2011-03-24 | 2011-03-24 | Grinding-free method for forming double-metal band sawtooth at one time through laser cutting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110072170 CN102145412B (en) | 2011-03-24 | 2011-03-24 | Grinding-free method for forming double-metal band sawtooth at one time through laser cutting |
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| CN102145412A CN102145412A (en) | 2011-08-10 |
| CN102145412B true CN102145412B (en) | 2013-08-21 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015212444A1 (en) * | 2015-06-12 | 2016-12-15 | Schuler Automation Gmbh & Co. Kg | Method and device for producing a sheet metal blank |
| CN105880733B (en) * | 2016-05-11 | 2018-04-13 | 蔡锦霞 | A kind of saw blade cuts the laser etch process of structure |
| CN106001918A (en) * | 2016-06-30 | 2016-10-12 | 禹州市神运机械有限公司 | Cutting torch for laser cutting |
| GB2554919B (en) * | 2016-10-14 | 2021-06-23 | Liberty Performance Steels Ltd | A toothed blade manufacturing apparatus and a method of manufacturing a toothed blade |
| CN107999915A (en) * | 2017-12-18 | 2018-05-08 | 江苏大学 | The elongated hole burr removing method that burr burns under pure oxygen environment is triggered based on high-voltage pulse current |
| CN110293326B (en) * | 2019-07-30 | 2021-04-13 | 长沙理工大学 | Method for cutting thick plate by double-beam laser |
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|---|---|---|---|---|
| JP2004058259A (en) * | 2002-07-31 | 2004-02-26 | Amada Co Ltd | Sawblade, method and device for forming saw teeth |
| CN1947908A (en) * | 2005-10-10 | 2007-04-18 | 库拉图五金工具(上海)有限公司 | Method for processing saw |
| CN2900066Y (en) * | 2006-05-25 | 2007-05-16 | 上海市激光技术研究所 | On-line dripping pipe belt laser punching device |
| WO2007128587A1 (en) * | 2006-05-10 | 2007-11-15 | Böhler-Uddeholm Precision Strip GmbH & Co. KG | Method of producing initial components for saw blades or saw bands |
| CN101096786A (en) * | 2006-06-29 | 2008-01-02 | 特鲁菲舍尔股份有限公司及两合公司 | Saw-tooth wire for producing a saw-tooth all-steel clothing for a roller or a carding element of a spinning room machine |
| CN101648298A (en) * | 2009-06-25 | 2010-02-17 | 上海昆杰五金工具有限公司 | Method for efficiently producing saw |
| CN201436123U (en) * | 2009-07-03 | 2010-04-07 | 上海迈通超硬材料有限公司 | Full-automatic diamond saw blade laser welder |
| CH701057B1 (en) * | 2006-07-08 | 2010-11-30 | Martin Pott | Manufacturing methods for saw blades. |
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2011
- 2011-03-24 CN CN 201110072170 patent/CN102145412B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004058259A (en) * | 2002-07-31 | 2004-02-26 | Amada Co Ltd | Sawblade, method and device for forming saw teeth |
| CN1947908A (en) * | 2005-10-10 | 2007-04-18 | 库拉图五金工具(上海)有限公司 | Method for processing saw |
| WO2007128587A1 (en) * | 2006-05-10 | 2007-11-15 | Böhler-Uddeholm Precision Strip GmbH & Co. KG | Method of producing initial components for saw blades or saw bands |
| CN2900066Y (en) * | 2006-05-25 | 2007-05-16 | 上海市激光技术研究所 | On-line dripping pipe belt laser punching device |
| CN101096786A (en) * | 2006-06-29 | 2008-01-02 | 特鲁菲舍尔股份有限公司及两合公司 | Saw-tooth wire for producing a saw-tooth all-steel clothing for a roller or a carding element of a spinning room machine |
| CH701057B1 (en) * | 2006-07-08 | 2010-11-30 | Martin Pott | Manufacturing methods for saw blades. |
| CN101648298A (en) * | 2009-06-25 | 2010-02-17 | 上海昆杰五金工具有限公司 | Method for efficiently producing saw |
| CN201436123U (en) * | 2009-07-03 | 2010-04-07 | 上海迈通超硬材料有限公司 | Full-automatic diamond saw blade laser welder |
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