CN107186337A - A kind of adjustable processing head of high-power laser beams and its control method - Google Patents
A kind of adjustable processing head of high-power laser beams and its control method Download PDFInfo
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- CN107186337A CN107186337A CN201710566071.1A CN201710566071A CN107186337A CN 107186337 A CN107186337 A CN 107186337A CN 201710566071 A CN201710566071 A CN 201710566071A CN 107186337 A CN107186337 A CN 107186337A
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- component
- light beam
- motor
- control method
- laser beams
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
- B23K26/0648—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising lenses
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The present invention relates to high power laser light skilled worker field, specifically a kind of adjustable processing head of high-power laser beams and its control method.Including housing, it is characterised in that：The lower section of the housing is provided with workpiece; optical component, the first component, the second component, the 3rd component, the 4th component, the 5th component and protection eyeglass are sequentially provided with housing from top to bottom; the right-hand member of second component and the 3rd component is fixed on the madial wall of housing by support; the left end of second component and the 3rd component connects motor and another motor respectively by another support, and the motor and another motor are fixed on housing.Compared with the existing technology, structure is relatively easy by the present invention, realizes the final focal beam spot size of flexible modulation by controlling to enter the beam diameter width of last group of optical component, realizes the processing to different-thickness material.
Description
Technical field
The present invention relates to high power laser light skilled worker field, specifically a kind of adjustable processing head of high-power laser beams
And its control method.
Background technology
In high power laser light manufacture field, the processing to material needs the accurate size for obtaining Laser Focusing hot spot and position
Put.Therefore, accurately the diameter of control laser beam and focal position are just particularly significant.Laser beam processes different-thickness
Material when, be generally required for repeatedly setting matching laser beam to complete the processing to material, wherein important one
Item is the size of focal beam spot.For example, optical-fiber laser is during cutting steel plate, when thin plate is changed into slab, it is necessary to right
The light beam focused on sheet material is carried out from new settings to meet the requirement cut to different-thickness steel plate, is possibly even needed sometimes
Change whole laser Machining head.And will greatly increase during this is from new settings parameter or disassembling, assembling and replacing processing head
Plus whole process time, and finally reduce the efficiency of a whole set of laser process equipment.
In existing CN102985214A and EP96300239, in order to obtain the focusing light of different beam diameters on workpiece
Spot, and design a series of simple or complicated optical texture.For example, in EP96300239, laser beam carries out standard first
Directly, the adjustable beam-expanding system being then made up of a multigroup eyeglass carries out the regulation of beam diameter, enters last by regulation and control
The beam diameter of piece focusing optical component adjusts the purpose of final focal beam spot diameter to reach.But optics member device in the device
Part is more, and structure is complex.In addition, in CN102985214A, there was only three optical components, overall knot in whole device
Structure is relatively simple.However, internal in this structure have an optics real focus, should in the case of high power laser light on kilowatt
Point energy is easy to sharply increase, and may finally make the gas ionization in device, and then influence the use of whole device.
The content of the invention
The present invention passes through to overcome the deficiencies in the prior art, a kind of adjustable processing head of laser beam and its control method
One relatively simple mechanism control enters the beam diameter width of last group of optical component to realize that flexible modulation is final
Focal beam spot size, to realize the processing to different-thickness material.
To achieve the above object, a kind of adjustable processing head of high-power laser beams and its control method, including shell are designed
Body, it is characterised in that：The lower section of the housing is provided with workpiece, be sequentially provided with from top to bottom in housing optical component, first yuan
Device, the second component, the 3rd component, the 4th component, the 5th component and protection eyeglass, first component, the
The left and right ends of four components, the 5th component and protection eyeglass are fixed on the madial wall of housing by support respectively, and second
The right-hand member of component and the 3rd component is fixed on the madial wall of housing by support, the second component and the 3rd component
Left end connects motor and another motor respectively by another support, and the motor and another motor are fixed on housing；
Control method comprises the following steps：1S1, optical component outgoing laser beams are converged after the first component as the
One light beam；2S2, the 3rd component that the first light beam regulates and controls by the second component for being regulated and controled respectively by motor and by another motor
The second light beam of diverging is formed afterwards；3S3, it is straight that the second light beam of diverging can form different light beams after the convergence of the 4th component
Footpath and the 3rd parallel light beam；4S4, the 3rd light beam is finally focused into corresponding after the 5th component and protection eyeglass convergence
Different spot diameters hot spot；5S5, the workpiece of different-thickness is processed by the hot spot of different spot diameters.
First component is positive lens, and the focal length of the first component is less than 50mm.
Second component is negative lens.
3rd component is one kind in positive lens or negative lens.
4th component is positive lens.
5th component is positive lens.
Comprise the following steps in the step 2：1 motor drives the second component to move a spacing along vertical optical axis direction
From rear；2 another motors drive the 3rd component specifically to compensate distance along vertical axis movement, the second light beam is passed through the 4th
The 3rd parallel light beam of a particular beam diameter is formed after component convergence, now motor drives the second component and another
Motor drives the 3rd component to regulate and control the diameter of the 3rd light beam.
The 3rd light beam is focused into light after the 4th component and protection eyeglass convergence on the surface of workpiece in the step 4
Spot.
The diameter of hot spot can be controlled by regulating and controlling the diameter of the 3rd light beam in the step 3.
Compared with the existing technology, structure is relatively easy by the present invention, by controlling the light into last group of optical component
Beam diameter width realizes the final focal beam spot size of flexible modulation, realizes the processing to different-thickness material.
Brief description of the drawings
Structural representations of the Fig. 1 for light beam regulation device of the invention in housing.
Fig. 2 is structural representation of the optical component in diverse location in the embodiment of present invention regulation spot size.
Referring to Fig. 1~Fig. 2, wherein, 1 is optical component, and 2 be the first component, and 3 be the second component, and 4 be ternary
Device, 5 be the 4th component, and 6 be the 5th component, and 7 be protection eyeglass, and 8 be workpiece, and 9 be laser beam, and 10 be the first light
Beam, 11 be the second light beam, and 12 be the 3rd light beam, and 13 be the 4th light beam, and 14 be hot spot, and 15 be motor, and 16 be another motor, and 17 are
Housing.
Embodiment
The invention will now be described in further detail with reference to the accompanying drawings.
As shown in figure 1, the lower section of the housing 17 is provided with workpiece 8, housing 17 is sequentially provided with optics member device from top to bottom
Part 1, the first component 2, the second component 3, the 3rd component 4, the 4th component 5, the 5th component 6 and protection eyeglass 7, institute
State the first component 2, the 4th component 5, the 5th component 6 and protect the left and right ends of eyeglass 7 to be fixed on respectively by support
On the madial wall of housing 17, the right-hand member of the second component 3 and the 3rd component 4 is fixed on the madial wall of housing 17 by support
On, the left end of the second component 3 and the 3rd component 4 connects motor 15 and another motor 16 respectively by another support, described
Motor 15 and another motor 16 are fixed on housing 17；
A kind of adjustable processing head controlling method of high-power laser beams, it is characterised in that comprise the following steps：1）S1, optics member
The outgoing laser beams 9 of device 1 are converged after the first component 2 as the first light beam 10；2）S2, the first light beam 10 passes through respectively
The second component 3 regulated and controled by motor 15 and the second light beam that diverging is formed after the 3rd component 4 regulated and controled by another motor 16
11；3）S3, the second light beam 11 of diverging can form different beam diameters and the parallel the 3rd after the convergence of the 4th component 5
Light beam 12；4）S4, the 3rd light beam 12 is finally focused into corresponding difference after the 5th component 6 and protection eyeglass 7 are converged
The hot spot 14 of spot diameter；5）S5, the workpiece 8 of different-thickness is processed by the hot spot 14 of different spot diameters.
First component 2 is positive lens, and the focal length of the first component 2 is less than 50mm.
Second component 3 is negative lens.
3rd component 4 is one kind in positive lens or negative lens.
4th component 5 is positive lens.
5th component 6 is positive lens.
Comprise the following steps in the step 2：1）Motor 15 drives the second component 3 to move one along vertical optical axis direction
After set a distance；2）Another motor 16 drives the 3rd component 4 specifically to compensate distance along vertical axis movement, makes the second light beam
11 form the 3rd parallel light beam 12 of a particular beam diameter after the convergence of the 4th component 5, and now motor 15 drives
Second component 3 and another motor 16 drive the 3rd component 4 to regulate and control the diameter of the 3rd light beam 12.
The 3rd light beam 12 gathers after the 4th component 6 and protection eyeglass 7 are converged on the surface of workpiece 8 in the step 4
It is burnt into hot spot 14.
The diameter of hot spot 14 can be controlled by regulating and controlling the diameter of the 3rd light beam 12 in the step 3.
The present invention is in use, laser is incided on the first optical component first from top to bottom, the component of optics first position
Put fixation；After on the first optical component, into the second optical component；The component of optics second the first component it
Under, the component of optics second can adjust corresponding position with motor；Laser is by entering the 3rd after the component of optics second
Optical component, the component of optics the 3rd is under the component of optics second, and the component of optics the 3rd, can be with also by motor connection
Carry out the relative adjustment of position；4th optical component is under the 3rd optical component, and the component locations of optics the 4th are fixed,
Laser is by entering the component of optics the 4th after the 3rd optical component；Laser enters optics the after the 4th optical component
Five components, the 5th optical component is under the 4th optical component and position is fixed；Laser passes through the optics of optics the 5th
After component, focus on the workpiece after difference, the component locations of optics the 5th are fixed.
It can be changed by beam diameter of the present invention between the 4th and the 5th optical component.
Laser enters after the first optical component, and light beam is converted into focusing light, therefore the first optical component by diverging light
Select as positive lens, the preferably less lens of focal length.But in view of laser from optical fiber beginning to the first optical component
Distance can not be too small, therefore the preferred focal length of the first optical component can not be excessively small, and the first optical component is particularly preferably burnt
Away from for 30 to 50mm.
For convenience of beam diameter of the regulation and control between the 4th and the 5th optical component, second and the 3rd optical component can
With the relative motion of the position generation along along laser beam axis direction.Second optical component drives operating position movement by a motor,
3rd optical component also drives operating position relative movement by another motor.
Laser enters second and the 3rd after optical component, and light beam is converted into diverging light by focusing light, therefore second and the
Three optical components one are particularly preferred mode and are：Second and the 3rd optical component all be negative lens.Laser passes through first
After optical component, light beam is converted into focusing light by diverging light.Second optical component is moved to a position, laser beam by
Focus on light and be converted into diverging light, there is certain angle of divergence.Then, the 3rd optical component is moved to a specific compensation position
Put, this position makes the angle of divergence of light beam further increase and with a specific angle, and the light beam for possessing the angle passes through
A collimated light beam for corresponding to beam diameter relatively can be formed after 4th optical component.
Alternatively, the second optical component is designed as negative lens, the 3rd optical component is designed as positive lens.Laser is passed through
Cross after the first optical component, light beam is converted into focusing light by diverging light.Second optical component is moved to a position, laser
Light beam is converted into diverging light by focusing light, there is certain angle of divergence.Then, the 3rd optical component is moved to a specific benefit
Position is repaid, this position reduces the angle of divergence of light beam and has a specific angle, the light beam for possessing the angle passes through
A collimated light beam for corresponding to beam diameter relatively can be formed after four optical components.
By the 4th optical component, laser beam possesses different beam diameter directional lights.Directional light passes through the 5th light
Learn after component, directional light formation collection optically focused.Different beam diameter directional lights will possess not after the 5th optical component
With the focal beam spot of size.
Embodiment 1：
Such as Fig. 2（a）Shown, laser beam 9 is a diverging light, is incided on the first component 2, and pass sequentially through second yuan
Device 3, the 3rd component 4.Then the laser beam forms an a diameter of d after the 4th component 5 collimation01It is parallel swash
Light light beam.The collimated light beam focuses on workpiece surface after hexa-atomic device 6 again, to realize the Laser Processing to workpiece, now
The a diameter of d of laser spot focused on workpiece02。
Embodiment 2：
Such as Fig. 2（b）Shown, when conversion processing workpiece, the thickness of workpiece may change, such as the thickness of required workpiece
It is thickening, now it is accomplished by increasing the diameter d for focusing on hot spot 14 on the surface of workpiece 812, it is necessary to make d12> d02.In order that focusing on light
The diameter d of spot 1412Increase, motor 15 will drive the second component 3 to move Z along optical axis direction11Distance.It is used as compensation, ternary
Device 4 will move Z under the driving of another motor 16 along optical axis direction12Distance.At this moment, the second light beam 11 is with a specific angle
Incident 4th component 5 of degree, an a diameter of d is formed after the 4th component 5 collimation11The 3rd parallel light beam 12, this
In d11<d01.The 3rd parallel light beam 12 focuses on one a diameter of d of workpiece surface formation after hexa-atomic device 612Hot spot
14, obtain d12> d02。
Embodiment 3：
When the thickness of required workpiece is further thickening, now it is accomplished by continuing increasing and focuses on the straight of hot spot 14 on the surface of workpiece 8
Footpath d22, it is necessary to make d22 >d12.In order that the diameter d of focal beam spot 1422Further increase, motor 15 will continue to drive second yuan
Device 3 moves Z along optical axis direction21Distance.As compensation, the 3rd component 4 by under the driving of another motor 16 along optical axis side
To motion Z21Distance.At this moment, the second light beam 11 is with incident 4th component 5 of another specific angle, by the 4th component
An a diameter of d is formed after 5 collimations21The 3rd parallel light beam 12, d here21<d11.The 3rd parallel light beam 12 passes through the 6th
One a diameter of d of workpiece surface formation is focused on after component 622Hot spot 14, obtain d22 >d12。
Claims (9)
1. a kind of adjustable processing head of high-power laser beams and its control method, including housing, it is characterised in that：The housing
（17）Lower section be provided with workpiece（8）, housing（17）Optical component is inside sequentially provided with from top to bottom（1）, the first component（2）、
Second component（3）, the 3rd component（4）, the 4th component（5）, the 5th component（6）With protection eyeglass（7）, described first
Component（2）, the 4th component（5）, the 5th component（6）With protection eyeglass（7）Left and right ends fixed respectively by support
In housing（17）Madial wall on, the second component（3）With the 3rd component（4）Right-hand member housing is fixed on by support（17）
Madial wall on, the second component（3）With the 3rd component（4）Left end motor is connected by another support respectively（15）With it is another
One motor（16）, the motor（15）With another motor（16）It is fixed on housing（17）On；
Control method comprises the following steps：1）S1, optical component（1）Outgoing laser beams（9）By the first component（2）Afterwards
Convergence turns into the first light beam（10）；2）S2, the first light beam（10）By respectively by motor（15）Second component of regulation and control（3）With
By another motor（16）3rd component of regulation and control（4）The second light beam of diverging is formed afterwards（11）；3）S3, the second light beam of diverging
（11）By the 4th component（5）Different beam diameters and the 3rd parallel light beam can be formed after convergence（12）；4）S4, the 3rd
Light beam（12）By the 5th component（6）With protection eyeglass（7）Corresponding different spot diameters are finally focused into after convergence
Hot spot（14）；5）S5, passes through the hot spot of different spot diameters（14）To process the workpiece of different-thickness（8）.
2. a kind of adjustable processing head of high-power laser beams as claimed in claim 1 and its control method, it is characterised in that：
First component（2）For positive lens, the first component（2）Focal length be less than 50mm.
3. a kind of adjustable processing head of high-power laser beams as claimed in claim 1 and its control method, it is characterised in that：
Second component（3）For negative lens.
4. a kind of adjustable processing head of high-power laser beams as claimed in claim 1 and its control method, it is characterised in that：
3rd component（4）For one kind in positive lens or negative lens.
5. a kind of adjustable processing head of high-power laser beams as claimed in claim 1 and its control method, it is characterised in that：
4th component（5）For positive lens.
6. a kind of adjustable processing head of high-power laser beams as claimed in claim 1 and its control method, it is characterised in that：
5th component（6）For positive lens.
7. a kind of adjustable processing head of high-power laser beams as claimed in claim 1 and its control method, it is characterised in that
The hot spot that different spot diameters are obtained in the step 4 comprises the following steps：1）Motor（15）Drive the second component（3）Edge is perpendicular
After straight optical axis direction motion certain distance；2）Another motor（16）Drive the 3rd component（4）It is special along vertical axis movement
Fixed compensation distance, makes the second light beam（11）By the 4th component（5）One particular beam diameter of formation is parallel after convergence
The 3rd light beam（12）, now motor（15）Drive the second component（3）With another motor（16）Drive the 3rd component（4）Can
To regulate and control the 3rd light beam（12）Diameter.
8. a kind of adjustable processing head of high-power laser beams as claimed in claim 1 and its control method, it is characterised in that：
3rd light beam in the step 4（12）By the 4th component（6）With protection eyeglass（7）In workpiece after convergence（8）Surface gather
It is burnt into hot spot（14）.
9. a kind of adjustable processing head of high-power laser beams as claimed in claim 1 and its control method, it is characterised in that：
Regulate and control the 3rd light beam in the step 3（12）Diameter can control hot spot（14）Diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710566071.1A CN107186337A (en) | 2017-07-12 | 2017-07-12 | A kind of adjustable processing head of high-power laser beams and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710566071.1A CN107186337A (en) | 2017-07-12 | 2017-07-12 | A kind of adjustable processing head of high-power laser beams and its control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107186337A true CN107186337A (en) | 2017-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710566071.1A Pending CN107186337A (en) | 2017-07-12 | 2017-07-12 | A kind of adjustable processing head of high-power laser beams and its control method |
Country Status (1)
| Country | Link |
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| CN (1) | CN107186337A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109807464A (en) * | 2019-03-28 | 2019-05-28 | 赵帅 | A kind of laser power control device and its method of low power applications |
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| US5304774A (en) * | 1993-05-17 | 1994-04-19 | Caterpillar, Inc. | Method and apparatus for monitoring weld quality |
| CN201552383U (en) * | 2009-11-19 | 2010-08-18 | 深圳市大族激光科技股份有限公司 | Multi-head laser processing device |
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| CN109807464A (en) * | 2019-03-28 | 2019-05-28 | 赵帅 | A kind of laser power control device and its method of low power applications |
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| CB02 | Change of applicant information |
Address after: 200240 No. 953 lane, Jianchuan Road, Minhang District, Shanghai 322 Applicant after: Shanghai Pak Chu electronic Polytron Technologies Inc Address before: 200240 west two floor, 2 building, 940 Jianchuan Road, Minhang District, Shanghai. Applicant before: Shanghai Bochu Electronic Technology Co., Ltd. |
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Application publication date: 20170922 |
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