CN101862911A - Handheld laser cutting method - Google Patents
Handheld laser cutting method Download PDFInfo
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- CN101862911A CN101862911A CN 201010126537 CN201010126537A CN101862911A CN 101862911 A CN101862911 A CN 101862911A CN 201010126537 CN201010126537 CN 201010126537 CN 201010126537 A CN201010126537 A CN 201010126537A CN 101862911 A CN101862911 A CN 101862911A
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Abstract
The invention discloses a handheld laser cutting method. When a handheld laser cutting device is used for cutting, a laser beam emitted from a handheld laser cutting head which is held by a hand is required to be focused on a relative position of a part to be cut; indicating red light is used for spatial positioning during the cutting; the handheld laser cutting head outputs the laser beams which are generated by an Nd:YAG laser or a fiber laser and two indicating red light beams which are exclusively and just converged at a central position of a focal plane of the laser beams output for cutting; and the two indicating red light beams which can be converged at one point can be used for the cutting.
Description
Technical field
The invention belongs to a kind of method of hand-held laser cutting.
Background technology
Laser cutting is very general, and laser cutting can be used to cut metal materials such as copper, steel, aluminium alloy, also can cut nonmetallic materials such as plastics, pottery; Can in air, cut, also can cut in a vacuum or in the protection chamber of inert gas; Can the object that can directly touch be cut, also can the object that can not directly touch, be in the annular seal space be cut.Can cut large component, also can be used for cutting minimum parts.Can directly cut, also can under some specific gas auxiliary, cut.Again since laser cutting have usually many other traditional cutting methods incomparable superiority, during as laser cutting, advantage such as its heat affected area is little, and the smooth surface after the cutting is smooth.This makes laser cutting that wide applications be arranged.
Present laser cutting has various.But present laser cutting device all is to be cut on the workbench, can't the workpiece that be in outside the workbench be cut.In practice, we usually need to cut being in the first-class parts of coming work top of can not taking down of wall, roof or some equipment.This cutting demand, laser cutting device on the market is helpless at present.
At this deficiency that exists in the present laser cutting technique, the present invention designs a kind of laser cutting method novel, hand-held and device, can carry out laser cutting to being in the first-class parts of coming work top of can not taking down of wall, roof or some equipment.
Summary of the invention
The method that the purpose of this invention is to provide a kind of hand-held laser cutting, the laser beam that Nd:YAG laser instrument or optical fiber laser are sent, be transferred to the hand-held laser cutting in front by the optical fiber flexibility, can carry out laser cutting being in the first-class parts of coming work top of can not taking down of wall, roof or some equipment.This laser cutting method is except the characteristics with common laser cutting, also has lot of advantages, as it is big to cut the space and the angle that can reach, can cutting be in that wall, roof or some equipment are first-class can not take down the parts of coming work top, the laser head of cutting is light and handy, can hand and advantage such as cut.
The present invention is in the process with the cutting of hand-held laser cutting device, and the laser beam that the hand-held laser cutting head in being held in the hand sends will focus on the region of interest of parts to be cut; Adopt indication ruddiness to carry out sterically defined mode in the cutting process; The hand-held laser cutting head is except that will exporting the laser beam that is produced by Nd:YAG laser instrument or optical fiber laser, also to export two bundle indication ruddiness, this two bundles indication ruddiness is just in time joined with the center, focal plane of laser beam in the cutting of output and intersected, and is non-intersect in other any position; Indicate cutting with this two bundles indication ruddiness that intersects at a point of joining.
Described hand-held laser cutting device; by optical fiber; fiber coupler; the beam-expanding collimation mirror; cutting head; adjust screw; total reflective mirror; lens; stacked switch; visible laser; handle; semi-transparent semi-reflecting lens; the protection eyeglass; cable; laser constitution; laser instrument and optical fiber; cable connects; cable is connected with stacked switch; optical fiber is connected with fiber coupler; fiber coupler is connected with cutting head; beam-expanding collimation mirror and band are housed in cutting head adjust the total reflective mirror of screw; lens; visible laser; semi-transparent semi-reflecting lens; the protective glass sheet is housed before the cutting head; handle is housed below the cutting head, also has been equipped with movably rule.
Described stacked switch is that the connecting line knob of 3 switches lumps together.
Advantage of the invention and effect:
The present invention can carry out laser cutting to being in the first-class parts of coming work top of can not taking down of wall, roof or some equipment.This laser cutting method is except the characteristics with common laser cutting, also has lot of advantages, as it is big to cut the space and the angle that can reach, can cutting be on the wall or the first-class parts that can not take work top in roof, incisory laser head is light and handy, can hand and advantage such as cut.
Description of drawings
Fig. 1 is a structural representation of the present invention.
The specific embodiment
In the accompanying drawing 1, the laser beam of output is transferred to the fiber coupler 2 of hand-held laser cutting head 5 by optical fiber 1 in the main body 25 of the cutter sweep that is made of Nd:YAG laser instrument or optical fiber laser (wait can with the laser instrument of Optical Fiber Transmission laser beam), pass through beam-expanding collimation mirror 4 again through the laser beam 3 after fiber coupler 2 couplings, line focus lens 9 focus on post-concentration in the cutpoint to be cut 22 of lens focal plane then.
In the process of hand-held laser cutting, in order well to aim at position 22 to be cut, with visible light 18 conduct indication laser beams.The indication laser beam that is sent by visible laser 11 is through behind the semi-transparent semi-reflecting lens 17, a part of laser beam 18 after the transmission with expand bundle after the laser beam 20 that is used to cut parallel, through arrival position 22 to be cut, lens 9 back; After passing through total reflective mirror 7 again through the laser beam 19 after semi-transparent semi-reflecting lens 17 reflection, obtain the indication laser beam 8 substantially parallel, again through arrival position 22 to be cut, lens 9 back with cutting laser beam 20.Be equipped with adjustable screw 6 on the total reflective mirror 7, be used to adjust the direction of reflection back indication laser beam 8.If the wavelength difference of visible laser beam that is used to indicate 18 (or laser beam 8) and the laser beam 3 (or laser beam 20) that is used to cut is few, then adjust the orientation of total reflective mirror 7, make the indication laser beam 8 after the reflection and be parallel to the laser beam 20 that is used to cut through the indication laser beam 18 of semi-transparent semi-reflecting lens, then two bundle indication laser beams 8 and 18 are exactly 22 through the convergent point behind the lens 9, and are consistent with the focus of cutting laser beam 20.But,, make a little difference of the convergent point of two bundle indication laser beams and focus that laser beam 20 is used in cutting because indication laser beam 8 (or laser beam 18) and cutting certainly exist aberration with the difference of wavelength of laser beam 20.So, can adjust the orientation of total reflective mirror 7 by adjusting screw 6, the convergent point of two bundle indication laser beams behind lens 9 overlapped, so that follow-up cutting is indicated with the focus of cutting with laser beam.
For the convenience of locating, also be equipped with movably rule 21, can indicate the focal plane position of cutting by regulating the length of rule extension with laser beam 20.
Also be useful on hand-held handle 15 on the hand-held laser cutting head, the press button 16 that is used for single cut, the switch 12 that is used for visible light indication laser power supply, total power switch 13, it is 10 that connecting line 14 knobs of switch 12,13,16 lump together, and is connected to laser instrument 25 by cable 24 and optical fiber 1 parallel transmission certain distance together again.
In order to prevent that metallic residue is provided with protection eyeglass 23 to the damage of condenser lens 9 in the cutting process in the outside of condenser lens.
Concrete embodiment can 1 be described below in conjunction with the accompanying drawings.
After the remote flexible transmission of laser beam through optical fiber 1 of main body 25 outputs of the cutter sweep that constitutes by Nd:YAG laser instrument or optical fiber laser (wait can with the laser instrument of Optical Fiber Transmission laser beam), optical fiber coupling component 2 to hand-held laser cutting head 5, laser beam 3 after coupling output enters beam-expanding collimation mirror 4, and the laser beam 20 behind the beam-expanding collimation focuses on focus 22 places by condenser lens 9 again.Main body 25 outputs of the cutter sweep that the power supply of the control signal of whole system, visible light indication laser and control signal etc. all are made of Nd:YAG laser instrument or optical fiber laser (wait can with the laser instrument of Optical Fiber Transmission laser beam) are passed to handle 15 the insides of hand-held laser cutting head 5 and are handled through cable 24,10.
During cutting, open the switch 12 of total power switch 13 and visible light indication laser power supply earlier, the visible pilot light that sends by mobile rule 21, visible light indication laser 11, with position to be cut in alignment with focus 22 places, press laser output button 16 then, with the parameter that on the main body 25 of cutter sweep, sets in advance, cut.
The indication that indication laser 11 sends is passed through condenser lens 9 post-concentrations after passing through semi-transparent semi-reflecting lens 17 beam splitting with visible light again, by adjusting screw 6 it is joined at focus 22 places, is used to indicate incisory invisible laser beam.
Usually, when focal length one timing of condenser lens 9, the position of focus 22 is certain.So a cover hand-held laser cutting device can be adjusted screw 6 earlier before dispatching from the factory, after passing through semi-transparent semi-reflecting lens 17 beam splitting with visible light, the indication that indication laser 11 is sent passes through condenser lens 9 post-concentrations again at focus 22 places.Why fine-tuning adjustment screw 6 is set, and is that this is owing to aberration is caused because two bundles parallel with laser beam 20 are adjusted light 8 and 18 not exclusively overlaps through the convergent point behind the lens 9 with laser beam 20 through the convergent point behind the lens 9.For example, if the wavelength of laser beam 20 is 1.06 μ m, the wavelength that two bundles are adjusted light 8 and 18 is 0.6328 μ m (the red pilot light that He-Ne laser sends), the focal length of lens 9 is the words of 100mm, then since the caused difference of aberration probably at 1～2mm, so, get final product by the fine setting of adjustable adjustment screw 6.
As seen indication laser also can be contained in the main body 25 of cutter sweep, then by remaking pilot light after the Optical Fiber Transmission conversion.
Focal position after also can indicating cutting with laser beam 20 focusing by other modes.
In order to alleviate the weight of hand-held cutting laser head, the main body 25 that the control panel etc. that will be used to adjust parameters of laser beam is placed to cutter sweep together.Do not consider to increase under the prerequisite of weight of hand-held cutting laser head, the control panel etc. that is used to adjust parameters of laser beam can be placed in hand-held cutting laser head yet, perhaps add a control assembly in parallel in addition with the hand-held laser cutting head.
Utilize above device, select 10～300w pulse or jointed fiber laser instrument or Nd:YAG laser instrument for use, auxiliary (cutting of titanium and alloy thereof is auxiliary with argon gas usually) down at oxygen focuses on laser beam with condenser lens.Can cut the materials such as stainless steel, copper, aluminium and aluminium alloy of thickness below 5mm.
The pressure of used assist gas oxygen is about 8bar during cutting.Cutting speed during cutting according to the different choice of cutting material thickness and laser power between 0.1～9m/min.
As SPI optical fiber laser with 100w, assisting down of 8bar pressure oxygen, with focal length is that the condenser lens of 50mm focuses on laser beam, can be respectively be that 304 corrosion resistant plates of 0.5mm, 0.2mm, 0.1mm cut to thickness, the speed during cutting is respectively 30mm/s, 100mm/s, 150mm/s.SPI optical fiber laser with 100w, assisting down of 8bar pressure oxygen, with focal length is that the condenser lens of 50mm focuses on laser beam, can be respectively be that the brass of 0.1mm, the mild steel of 0.5mm, single silicon of 0.75mm cut to thickness, its cutting speed can reach 30mm/s, 40mm/s, 2mm/s respectively.
With the SPI optical fiber laser of 100w, assisting down of argon gas, can be that 318 titanium alloys of 0.6mm cut with thickness, cutting speed can reach 20mm/s.
Claims (3)
1. the method for a hand-held laser cutting is characterized in that the laser beam that the hand-held laser cutting head in being held in the hand sends will focus on the region of interest of parts to be cut in the process with the cutting of hand-held laser cutting device; Adopt indication ruddiness to carry out sterically defined mode in the cutting process; The hand-held laser cutting head is except that will exporting the laser beam that is produced by Nd:YAG laser instrument or optical fiber laser, also to export two bundle indication ruddiness, this two bundles indication ruddiness is just in time joined with the center, focal plane of laser beam in the cutting of output and intersected, and is non-intersect in other any position; Indicate cutting with this two bundles indication ruddiness that intersects at a point of joining.
2. according to the method for the described hand-held laser cutting of claim 1; it is characterized in that the hand-held laser cutting device is by by optical fiber; fiber coupler; the beam-expanding collimation mirror; cutting head; adjust screw; total reflective mirror; lens; stacked switch; visible laser; handle; semi-transparent semi-reflecting lens; the protection eyeglass; cable; laser constitution; it is characterized in that laser instrument (25) and optical fiber (1); cable (24) connects; cable (24) is connected with (10); optical fiber (1) is connected with fiber coupler (2); fiber coupler (2) is connected with cutting head (5); beam-expanding collimation mirror (4) and band are housed in cutting head (5) lining adjust the total reflective mirror (7) of screw (6); lens (9); visible laser (11); semi-transparent semi-reflecting lens (17); the preceding protective glass sheet (23) that is equipped with of cutting head (5); handle (15) is housed below the cutting head (5), also has been equipped with removable rule (21).
3. according to described hand-held laser cutting method of claim 2 and device thereof, it is characterized in that described (10) are that connecting line (14) knob of switch (12), switch (13), switch (16) lumps together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010126537 CN101862911A (en) | 2010-03-11 | 2010-03-11 | Handheld laser cutting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010126537 CN101862911A (en) | 2010-03-11 | 2010-03-11 | Handheld laser cutting method |
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| CN101862911A true CN101862911A (en) | 2010-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010126537 Pending CN101862911A (en) | 2010-03-11 | 2010-03-11 | Handheld laser cutting method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179633A (en) * | 2011-04-28 | 2011-09-14 | 江苏大学 | Hand type laser cutting head with clamping function |
| CN103878493A (en) * | 2014-04-05 | 2014-06-25 | 李莎 | Laser breaking-in device |
| CN106735932A (en) * | 2016-12-19 | 2017-05-31 | 重庆华瑞玻璃有限公司 | A kind of door glass is met an urgent need cutter |
| CN106903427A (en) * | 2017-04-24 | 2017-06-30 | 北京华岸科技有限公司 | Laser control apparatus and laser processing device |
| CN107283071A (en) * | 2017-06-20 | 2017-10-24 | 广东电网有限责任公司东莞供电局 | It is a kind of to cut the instruction device and method that aim at for long distance laser |
| CN108838525A (en) * | 2018-07-25 | 2018-11-20 | 杨晟 | Portable underwater wirerope laser cutting system and application method |
| CN110497078A (en) * | 2019-09-12 | 2019-11-26 | 奔腾楚天激光（武汉）有限公司 | The solar term nozzle and cutting technique of a kind of low gas consumption cutting of optical-fiber laser |
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| JPS57172306A (en) * | 1981-04-17 | 1982-10-23 | Tdk Corp | Focus controller of optical recording system |
| CN2055027U (en) * | 1989-06-13 | 1990-03-28 | 管勤 | Daylight indicated laser scalpel with coincided double focus |
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| CN1500593A (en) * | 2002-11-19 | 2004-06-02 | 南京泉峰国际贸易有限公司 | Assistant handles with laser positioning scale used in drilling tools |
| CN101176949A (en) * | 2007-12-07 | 2008-05-14 | 北京工业大学 | Hand-hold laser processing spear system |
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| CN2055027U (en) * | 1989-06-13 | 1990-03-28 | 管勤 | Daylight indicated laser scalpel with coincided double focus |
| CN1109615A (en) * | 1993-03-08 | 1995-10-04 | 欧林巴斯光学工业股份有限公司 | Stand-alone fixture for converting operation of hand-held laser scanner |
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| CN201371313Y (en) * | 2009-03-20 | 2009-12-30 | 北京工业大学 | Laser processing twin-beam reference light device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179633A (en) * | 2011-04-28 | 2011-09-14 | 江苏大学 | Hand type laser cutting head with clamping function |
| CN102179633B (en) * | 2011-04-28 | 2013-10-23 | 江苏大学 | Hand type laser cutting head with clamping function |
| CN103878493A (en) * | 2014-04-05 | 2014-06-25 | 李莎 | Laser breaking-in device |
| CN103878493B (en) * | 2014-04-05 | 2016-06-15 | 李莎 | Laser dismantling device |
| CN106735932A (en) * | 2016-12-19 | 2017-05-31 | 重庆华瑞玻璃有限公司 | A kind of door glass is met an urgent need cutter |
| CN106903427A (en) * | 2017-04-24 | 2017-06-30 | 北京华岸科技有限公司 | Laser control apparatus and laser processing device |
| CN107283071A (en) * | 2017-06-20 | 2017-10-24 | 广东电网有限责任公司东莞供电局 | It is a kind of to cut the instruction device and method that aim at for long distance laser |
| CN108838525A (en) * | 2018-07-25 | 2018-11-20 | 杨晟 | Portable underwater wirerope laser cutting system and application method |
| CN110497078A (en) * | 2019-09-12 | 2019-11-26 | 奔腾楚天激光（武汉）有限公司 | The solar term nozzle and cutting technique of a kind of low gas consumption cutting of optical-fiber laser |
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Application publication date: 20101020 |