CN201589892U - Widening device of high-power laser beam - Google Patents
Widening device of high-power laser beam Download PDFInfo
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- CN201589892U CN201589892U CN 200920189369 CN200920189369U CN201589892U CN 201589892 U CN201589892 U CN 201589892U CN 200920189369 CN200920189369 CN 200920189369 CN 200920189369 U CN200920189369 U CN 200920189369U CN 201589892 U CN201589892 U CN 201589892U
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- laser beam
- fan
- reflect focalization
- widen
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Abstract
The utility model discloses a widening device of a high-power laser beam, which comprises a continuous laser device, a fan-shaped reflecting focusing mirror, a deflecting depolarizer, a high-speed electrical machine and a computer, wherein one side of the deflecting depolarizer is connected with a rotating shaft of the high-speed electrical machine, the high-speed electrical machine is connected with the computer, the deflecting depolarizer is arranged relative to the fan-shaped reflecting focusing mirror, and a reflecting point C of the laser beam emitted by the continuous laser device on the deflecting depolarizer is concentric with a gyration center O of the fan-shaped reflecting focusing mirror. When the device works, the continuous laser beam outputted by the continuous laser device forms into a continuous scanning laser beam in a fan-shaped area with a certain scanning angle alpha through the reflection of the deflecting depolarizer which rotates at high speed, the scanning laser beam forms into an arc scanning focusing light band on the surface of a work piece to be processed after being reflected and focused by the fan-shaped reflecting focusing mirror. Compared with the prior art, the widening device can widen the high-power laser beam within a wider range (20-500mm), and can continuously control the widening width.
Description
Technical field
The utility model relates to Laser Processing and optoelectronic applications field, particularly a kind of apparatus for widen of high-power laser beam.
Background technology
The laser focusing point of high-energy-density will can be formed after the original high power laser light beam focusing, this focus point with high-energy-density is acted on metal material surface, can handle metal material surface, as deposited, thermal treatment of: metal surface etc., make its metal surface form a kind of special superficial layer, to strengthen the features such as wearing quality, corrosion resistivity, fatigue resistence, thermotolerance and creep resistance of metal material surface.Adopting laser to carry out the heat treated advantage of material surface mainly comprises: the zone that the thermal deformation district that processing speed is fast, processed is little, can realize Local treatment optionally, processing flexibility is good, widely applicable, can handle irregularly shaped parts and be difficult to arrive.Adopt parts that laser heat-treats as piston ring groove, meter slide block, cylinder jacket, gear, turbine blade, camera shutter, oil pump cylinder, internal combustion engine valve and bearing etc.
When utilizing laser to carry out material surface thermal treatment, often require the width and the processed workpiece coupling of laser beam, occur the overlap joint between the thermal treatment band in the time of can avoiding thermal treatment like this, realize the homogeneity of thermal treatment thickness.By guiding device, can realize control easily, to realize the Laser Processing of highly flexible to the laser beam transmission direction through particular design.Utilize this characteristic of laser beam, can realize the broadband scanning of laser beam.For example patent " a kind of laser broadband scanning mirror " (patent No. ZL02245662.7) has been described a kind of device that utilizes laser rotary mirror the laser beam broadening to be become the ribbon beam of certain width.Compare with the processing of common laser bundle, broadband scanning can make Temperature Distribution more even, so the distortion that thermal treatment causes is littler, and one number percent to preceding one heat affecting also reduces down.This device has been applied to laser broadband thermal treatment and deposited, proves a kind of effective method.But the laser beam flying width of this device is subjected to the restriction of its complex optical path design, can only realize the broadening of laser beam in limited scope, and for example present adjustable laser scanning width only is 20-40mm.
Summary of the invention
The utility model purpose is at the deficiencies in the prior art and defective, and providing a kind of can (carry out broadening to high-power laser beam in 20～500mm), and the apparatus for widen of the high-power laser beam of broadening width continuous controllable in wideer scope.
The technical solution of the utility model is: a kind of apparatus for widen of high-power laser beam, and it comprises continuous wave laser, fan-shaped reflect focalization mirror, gauche form galvanometer, high-speed electric expreess locomotive and computing machine; A side that it is characterized in that described gauche form galvanometer links to each other with the rotating shaft of high-speed electric expreess locomotive, and high-speed electric expreess locomotive then links to each other with computing machine; Gauche form galvanometer and fan-shaped reflect focalization mirror are staggered relatively, and the reflection spot C of laser beam on the gauche form galvanometer that described continuous wave laser sends is concentric with the centre of gyration O of described fan-shaped reflect focalization mirror.
Shape to described fan-shaped reflect focalization mirror in the utility model further limits as follows:
Following formula is satisfied in arbitrfary point on the reflecting surface camber line AB of this fan-shaped reflect focalization mirror in plane right-angle coordinate:
-y+5f/2=x
2/ 2f, and following formula is satisfied in the arbitrfary point on the fan-shaped reflect focalization mirror reflection face in rectangular coordinate system in space:
The value of f described in the utility model is 50～500mm.
The galvanometer of gauche form described in the utility model is made by red copper, and preferably is coated with one deck gold film on its reflecting surface, with further raising light reflectivity and prevent surface oxidation.
The apparatus for widen of high-power laser beam described in the utility model also comprises cooling cycle system, has the cooling duct in the described gauche form galvanometer, and described cooling duct links to each other with described cooling cycle system.Chilled water is carried and by described cooling duct by cooling cycle system, thereby the heat on the gauche form galvanometer is taken away, cross cause thermal damage to prevent the gauche form galvanometer.
The apparatus for widen course of work of this high-power laser beam described in the utility model is as follows: the continuous laser beam of continuous wave laser output is through forming the continuous sweep light beam in the sector region with certain scanning angle α after the gauche form vibration mirror reflected of high speed rotating, after this scanning light beam focuses on through fan-shaped reflect focalization mirror reflection, form continuous are scan on the processed workpiece surface and focus on light belt, workpiece is carried out laser surface thermal treatment.
The utility model is by the deflection angle β size of computer control gauche form galvanometer, and then the surface sweeping angle [alpha] size of the interior continuous sweep light beam of change sector region, just can realize the continuous controllable for the laser scanning width.
In the utility model, just can reach control for gauche form galvanometer deflection angle β by parameter preset in computing machine, concrete certainly parameter setting and relevant control technology are technology well-known to those skilled in the art.
The utility model has the advantages that:
The utility model compared with prior art mainly has the following advantages:
(1) can be in wide region (20～500mm) realize high-power laser beam is carried out broadening, and the width of beam broadening can be set arbitrarily.
(2) the fan-shaped reflect focalization mirror of Cai Yonging is focused into an are scan with the continuous sweep light beam in the sector region and focuses on light belt, can make the heat treated effect of laser surface more even.
(3) focus on light belt by adjusting the are scan that scanning angle α just can obtain different arc, thereby realize continuous variable broadening high-power laser beam, therefore can make apparatus structure simply, working stability.
In a word, the utility model can be realized (the controlled broadening of 20～500mm) high-power laser beams in the wide region, and compare with existing apparatus, structure is simple more, more stable work, working (machining) efficiency height and laser energy utilizing rate height, and especially having overcome prior art need be by changing the deficiency that optical device change the beam broadening width.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described:
Fig. 1 is the apparatus for widen structural representation of the utility model high-power laser beam;
Fig. 2 is a fan-shaped reflect focalization mirror front view in the utility model;
Fig. 3 is centre section (the being the E-E section) structural representation (being in the rectangular coordinate system in space) of fan-shaped reflect focalization mirror in the utility model;
Fig. 4 is the principle schematic that the gauche form galvanometer is realized beam flying in the utility model.
Wherein: 1, continuous wave laser; 2, fan-shaped reflect focalization mirror; 3, gauche form galvanometer; 4, high-speed electric expreess locomotive; 5, computing machine; 6, cooling cycle system; 7, scanning light beam; 8, workpiece; 9, are scan focuses on light belt.
Embodiment
Embodiment: at first as shown in Figure 1, the apparatus for widen of the high-power laser beam that present embodiment provides mainly is made up of continuous wave laser 1, fan-shaped reflect focalization mirror 2, gauche form galvanometer 3, high-speed electric expreess locomotive 4, computing machine 5 and cooling cycle system 6.One side of described gauche form galvanometer 3 links to each other with the rotating shaft of high-speed electric expreess locomotive 4, and high-speed electric expreess locomotive 4 links to each other with computing machine 5, just can reach control for gauche form galvanometer 3 deflection angle β by parameter preset in computing machine 5.Have the cooling duct in the described gauche form galvanometer 3, this cooling duct links to each other with described cooling cycle system 6.Described gauche form galvanometer 3 and fan-shaped reflect focalization mirror 2 are staggered relatively, and the reflection spot C of laser beam on gauche form galvanometer 3 that makes continuous wave laser 1 send is concentric with the centre of gyration O of described fan-shaped reflect focalization mirror 2.
The core of the apparatus for widen of the described high-power laser beam of present embodiment is described fan-shaped reflect focalization mirror 2, further combined with Fig. 2, shown in Figure 3, these fan-shaped reflect focalization mirror 2 front view profiles are fan-shaped, and aforementioned centre of gyration O also is the center of circle (specifically as shown in Figure 2) of fan-shaped place circle.And the fan-shaped central angle of this fan-shaped reflect focalization mirror 2 is θ, and reflecting surface is parabolic, and it is a camber line AB that this parabola is reflected on the centre section (also being the E-E section) of fan-shaped reflect focalization mirror 2.Specifically as shown in Figure 3, suppose with the x axle as revolving shaft, parallel beam with the angle at 45 incident of the reflecting surface of fan-shaped reflect focalization mirror 2 accumulates in focal point F after reflection so, this focal point F is positioned on the y axle, and apart from revolving shaft (x axle) length is 2f, f is a focal length, and the central point O ' of reflecting surface also is 2f apart from the distance of revolving shaft (x axle), and the reflecting surface camber line AB of so described fan-shaped reflect focalization mirror 2 adopts non-standard parabolic equation to be expressed as follows :-y+5f/2=x
2/ 2f.And the every bit on described fan-shaped reflect focalization mirror 2 reflectings surface all satisfies equation in rectangular coordinate system in space:
As shown in Figure 4, with the continuous laser beam of continuous wave laser 1 output, direct projection reflexes to D point in the image field through this gauche form galvanometer 3 again to gauche form galvanometer 3; When this gauche form galvanometer 3 under high-speed electric expreess locomotive 4 drives, during with the reciprocal uniform angular velocity deflection of certain deflection angle β, reflection ray will at the uniform velocity back and forth rotate with two times of angular velocity, to realize the shuttle-scanning of reflection ray, be in the image field luminous point D to the shuttle-scanning between luminous point D ', thereby form continuous sweep light beam 7 in the sector region with certain scanning angle α.Gauche form galvanometer 3 materials are red copper in the present embodiment, can bear the high power laser light irradiation, and for further improving light reflectivity and preventing surface oxidation, can be coated with one deck gold film on the reflecting surface of gauche form galvanometer 3.And in the process of laser beam prolonged exposure gauche form galvanometer 3, chilled water is carried and by the cooling duct in the gauche form galvanometer 3 by cooling cycle system 5, thereby the heat on the gauche form galvanometer 3 is taken away, cross cause thermal damage to prevent gauche form galvanometer 3.
In conjunction with shown in Figure 1, the method that the apparatus for widen of high-power laser beam described in the utility model carries out broadening is as follows: the continuous laser beam that continuous wave laser 1 is exported forms the interior continuous sweep light beam 7 of sector region with certain scanning angle α through gauche form galvanometer 3 reflection backs, after this scanning light beam 7 focuses on through fan-shaped reflect focalization mirror 2, form continuous arc scanning focus band 9 on pending workpiece 8 surfaces with certain arc length, cooperate pending workpiece 8 along relative motion, finish the thermal treatment on 8 surfaces to workpiece to be handled perpendicular to the direction of scanning.
Described are scan focuses on the arc length of light belt 9 and the focal distance f and the fan-shaped central angle of fan-shaped reflect focalization mirror 2 is 0, and the scanning angle α of sector display light beam 7 is all relevant.When described fan-shaped reflect focalization mirror 2 parameter constants, the arc length of described are scan focusing light belt 9 is only relevant with the scanning angle α of scanning light beam 7, and controlled by the deflection angle β to gauche form galvanometer 3 in the utility model, just can obtain the sector display light beam 7 of scanning angle α continuous variable, the arc length that makes are scan focus on light belt 9 constantly changes, thereby realizes the continuous controllable broadening for high-power laser beam.
Claims (6)
1. the apparatus for widen of a high-power laser beam comprises continuous wave laser (1), fan-shaped reflect focalization mirror (2), gauche form galvanometer (3), high-speed electric expreess locomotive (4) and computing machine (5); A side that it is characterized in that described gauche form galvanometer (3) links to each other with the rotating shaft of high-speed electric expreess locomotive (4), and high-speed electric expreess locomotive (4) then links to each other with computing machine (5); Gauche form galvanometer (3) is staggered relatively with fan-shaped reflect focalization mirror (2), and the reflection spot C of laser beam on gauche form galvanometer (3) that described continuous wave laser (1) sends is concentric with the centre of gyration O of described fan-shaped reflect focalization mirror (2).
2. the apparatus for widen of high-power laser beam according to claim 1 is characterized in that following formula is satisfied in the arbitrfary point on the reflecting surface camber line AB of described fan-shaped reflect focalization mirror (2) in plane right-angle coordinate:
-y+5f/2=x
2/ 2f, and following formula is satisfied in the arbitrfary point on fan-shaped reflect focalization mirror (2) reflecting surface in rectangular coordinate system in space:
3. the apparatus for widen of high-power laser beam according to claim 2 is characterized in that described f=50～500mm.
4. the apparatus for widen of high-power laser beam according to claim 1 is characterized in that the material of described gauche form galvanometer (3) is a red copper, and is coated with one deck gold film on its reflecting surface.
5. the apparatus for widen of high-power laser beam according to claim 1 is characterized in that also comprising cooling cycle system (6), has the cooling duct in the described gauche form galvanometer (3), and described cooling duct links to each other with described cooling cycle system (6).
6. the apparatus for widen of high-power laser beam according to claim 1, gauche form galvanometer (3) the reflection back that it is characterized in that the continuous laser beam process high speed rotating that described continuous wave laser (1) is exported forms the interior continuous sweep light beam (7) of sector region with certain scanning angle α, behind this scanning light beam (7) process fan-shaped reflect focalization mirror (2) reflect focalization, form continuous are scan on processed workpiece (8) surface and focus on light belt (9), workpiece (8) is carried out laser surface thermal treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920189369 CN201589892U (en) | 2009-09-29 | 2009-09-29 | Widening device of high-power laser beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920189369 CN201589892U (en) | 2009-09-29 | 2009-09-29 | Widening device of high-power laser beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201589892U true CN201589892U (en) | 2010-09-22 |
Family
ID=42749679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920189369 Expired - Lifetime CN201589892U (en) | 2009-09-29 | 2009-09-29 | Widening device of high-power laser beam |
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|---|---|
| CN (1) | CN201589892U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103402692A (en) * | 2011-03-01 | 2013-11-20 | 株式会社理光 | Laser drawing control |
| CN103421933A (en) * | 2013-04-22 | 2013-12-04 | 常州大学 | Method for eliminating residual stress of welding joint of X80 pipeline steel |
| CN107388983A (en) * | 2017-06-29 | 2017-11-24 | 西安知微传感技术有限公司 | A kind of uniform scanning laser line generation system and method for energy |
| CN108890124A (en) * | 2018-09-19 | 2018-11-27 | 西安荷佐里机电科技有限公司 | A kind of galvanometer motor, laser galvanometer and laser processing apparatus |
-
2009
- 2009-09-29 CN CN 200920189369 patent/CN201589892U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103402692A (en) * | 2011-03-01 | 2013-11-20 | 株式会社理光 | Laser drawing control |
| CN103402692B (en) * | 2011-03-01 | 2015-08-19 | 株式会社理光 | Laser is drawn and is controlled |
| CN103421933A (en) * | 2013-04-22 | 2013-12-04 | 常州大学 | Method for eliminating residual stress of welding joint of X80 pipeline steel |
| CN103421933B (en) * | 2013-04-22 | 2015-02-25 | 常州大学 | Method for eliminating residual stress of welding joint of X80 pipeline steel |
| CN107388983A (en) * | 2017-06-29 | 2017-11-24 | 西安知微传感技术有限公司 | A kind of uniform scanning laser line generation system and method for energy |
| CN107388983B (en) * | 2017-06-29 | 2019-08-09 | 西安知微传感技术有限公司 | A kind of uniform scanning laser line generation system and method for energy |
| CN108890124A (en) * | 2018-09-19 | 2018-11-27 | 西安荷佐里机电科技有限公司 | A kind of galvanometer motor, laser galvanometer and laser processing apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100922 Effective date of abandoning: 20090929 |