CN107138854A - The adjustable laser Machining head of a kind of spot diameter and focal position and its control method - Google Patents
The adjustable laser Machining head of a kind of spot diameter and focal position and its control method Download PDFInfo
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- CN107138854A CN107138854A CN201710565616.7A CN201710565616A CN107138854A CN 107138854 A CN107138854 A CN 107138854A CN 201710565616 A CN201710565616 A CN 201710565616A CN 107138854 A CN107138854 A CN 107138854A
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- optical component
- motor
- control method
- light beam
- focal position
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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
-
- 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
- B23K26/04—Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light
- B23K26/046—Automatically focusing the laser beam
- B23K26/048—Automatically focusing the laser beam by controlling the distance between laser head and workpiece
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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 field of laser processing, the adjustable laser Machining head of specifically a kind of spot diameter and focal position and its control method.Including shell, it is characterised in that：Laser beam emitting device, the first optical component, the second optical component, the 3rd optical component, the 4th optical component and protection eyeglass are sequentially provided with the shell from top to bottom; the laser beam emitting device is fixed on the top of shell vertically; the emission port of laser beam emitting device is embedded in shell; the side of first optical component connects the first motor by the first attachment means; the side of 3rd optical component connects the second motor by the second attachment means, and the side of the 4th optical component connects the 3rd motor by the 3rd attachment means.The present invention is compared with the existing technology, simple in construction, easy to use；The position of the 4th component is adjusted by motor, the focal position of focal beam spot can be controlled, and spot diameter size can be kept constant.
Description
Technical field
The present invention relates to field of laser processing, the adjustable Laser Processing of specifically a kind of spot diameter and focal position
Head and its control method.
Background technology
, will for high-quality processing should be carried out to different materials and different-thickness workpiece to client in laser processing procedure
Ask, it is necessary to accurately control size and the focal position of final focal beam spot.For these reasons, for example in laser in cutting gold
During belonging to sheet material, in order to cut relatively thick workpiece, it is necessary to which making to focus on the focal beam spot on sheet material and trying one's best has one
Individual relatively large diameter, and focal position is set to an appropriate position.In contrast, one is being processed with relative
During the workpiece of small thickness, it is necessary to carried out to focusing on the parameter on workpiece from new settings, to complete, height high-quality to thin plate
The processing of efficiency.
In order to tackle the above-mentioned sets requirement to laser machining different workpieces parameter, countermeasure is in equipment mostly at present
After shutdown, corresponding parameter is set from new progress by hand by operating personnel.However, this work flow depends not only upon scene
Corresponding operating personnel must have corresponding operating experience, can also greatly increase the work pieces process time and reduce complete equipment
Processing efficiency.
Patent WO2011131541A1, which is disclosed, only has three optical components in a kind of simple scheme, the program, overall
Structure is relatively simple.But in this scheme, internal can have an optics real focus during regulation, swash in high power
In the case of light, the energy is easy to sharply increase, and may make the gas ionization in device, and then influence the work of equipment.
The content of the invention
The present invention designs a kind of spot diameter size and the adjustable laser in focal position adds to overcome the deficiencies in the prior art
Foreman and its control method.
To achieve the above object, a kind of spot diameter and the adjustable laser Machining head in focal position and its controlling party are designed
Method, including shell, it is characterised in that：Be sequentially provided with from top to bottom in the shell laser beam emitting device, the first optical component,
Second optical component, the 3rd optical component, the 4th optical component and protection eyeglass, the laser beam emitting device are solid vertically
The top of shell is scheduled on, the emission port of laser beam emitting device is embedded in shell, second optical component and protection eyeglass
It is fixed on respectively by the connecting rod of the left and right sides on the madial wall of shell, the side of first optical component passes through first
Attachment means connect the first motor, and the side of the 3rd optical component connects the second motor, the 4th light by the second attachment means
The side for learning component connects the 3rd motor by the 3rd attachment means；
Control method comprises the following steps：1）S1, laser beam emitting device outgoing laser beams converge after the first optical component
It is polymerized to the first light beam；2）S2, it is straight that the first light beam forms different light beams after the second optical component and the 3rd optical component
3rd light beam in footpath；3）S3, the 3rd light beam of different-diameter is final after the convergence of the 4th optical component to focus on formation relatively
The hot spot for the different spot diameters answered；4）S4, focus is regulated and controled by the hot spot of different-diameter, and by the 4th optical component
Diverse location, different types of workpiece is processed with this.
First motor, the second motor and the 3rd motor are located at the surface of shell.
First optical component is positive lens, and the focal range of the first optical component is 20-50mm..
Second optical component is negative lens.
3rd optical component is positive lens.
4th optical component is positive lens.
Comprise the following steps in the step 2：1 first light beam forms the second light of diverging after the second optical component
Beam；2 second light beams form the 3rd light beam of different beam diameters after the 3rd optical component.
The hot spot that diverse location is obtained in the step 5 comprises the following steps：1 first motor drives the first optical component
Certain distance is moved along vertical optical axis direction；2 subsequent second motors drive the specific compensation of the 3rd optical components motion away from
From；3 make the collimated light beam of the second light beam one particular beam diameter of formation after the convergence of the 3rd optical component.
Different focal positions are obtained in the step 5 to comprise the following steps：3rd motor drives the 4th optical component
Motion, so as to obtain the hot spot of different focal positions.
The present invention is compared with the existing technology, simple in construction, easy to use；The position of the 4th component is adjusted by motor,
The focal position of focal beam spot can be controlled, and spot diameter size can be kept constant.
Brief description of the drawings
Fig. 1 is the structural representation integrated in housing of regulation device in the present invention.
Fig. 2 is structural representation of the component in diverse location in the embodiment of present invention regulation spot size.
Fig. 3 is structural representation of the component in diverse location in the embodiment of present invention regulation focal position.
Referring to Fig. 1~Fig. 3, wherein, 1 is laser beam emitting device, and 2 be the first optical component, and 3 be the second optics member device
Part, 4 be the 3rd optical component, and 5 be the 4th optical component, and 6 be protection eyeglass, and 7 be workpiece, and 8 be laser beam, and 9 be the
One light beam, 10 be the second light beam, and 11 be the 3rd light beam, and 12 be hot spot, and 13 be shell, and 14 be the first attachment means, and 15 be second
Attachment means, 16 be the 3rd attachment means, and 17 be the first motor, and 18 be the second motor, and 19 be the 3rd motor.
Embodiment
The invention will now be described in further detail with reference to the accompanying drawings.
As shown in figure 1, be sequentially provided with from top to bottom in the shell 13 laser beam emitting device 1, the first optical component 2,
Second optical component 3, the 3rd optical component 4, the 4th optical component 5 and protection eyeglass 6, the laser beam emitting device 1
The vertical top for being fixed on shell 13, the emission port of laser beam emitting device 1 is embedded in shell 13, second optical component
3 are fixed on the madial wall of shell 13 by the connecting rod of the left and right sides respectively with protection eyeglass 6, first optical component
2 side connects the first motor 17 by the first attachment means 14, and the side of the 3rd optical component 4 passes through the second attachment means
15 the second motors 18 of connection, the side of the 4th optical component 5 connects the 3rd motor 19 by the 3rd attachment means 16；
Control method comprises the following steps：1）S1, the outgoing laser beams 8 of laser beam emitting device 1 are after the first optical component 2
Pool the first light beam 9；2）S2, the formation after the 3rd optical component 4 is different by the second optical component 3 for the first light beam 9
3rd light beam 11 of beam diameter；3）S3, the 3rd light beam 11 of different-diameter finally gathers after the convergence of the 4th optical component 5
Jiao forms the hot spot 12 of corresponding different spot diameters；4）S4, by the hot spot 12 of different-diameter, and by the 4th optics member
Device 5 regulates and controls the diverse location of focus, and different types of workpiece 7 is processed with this.
First motor 17, the second motor 18 and the 3rd motor 19 are located at the surface of shell 13.
First optical component 2 is positive lens, and the first optical component 2 has small focal length, the first optics
The focal range of component 2 is 20-50mm.
Second optical component 3 is negative lens.
3rd optical component 4 is positive lens.
4th optical component 5 is positive lens.
Comprise the following steps in the step 2：1 first light beam 9 forms the second of diverging after the second optical component 3
Light beam 10；2 second light beams 10 form the 3rd light beam 11 of different beam diameters after the 3rd optical component 4.
The hot spot 12 that diverse location is obtained in the step 5 comprises the following steps：1 first motor 17 drives the first optics member
Device 2 moves certain distance along vertical optical axis direction；It is specific that 2 subsequent second motors 18 drive the 3rd optical component 4 to move
Compensation distance；3 make the directional light of the second light beam 10 one particular beam diameter of formation after the convergence of the 3rd optical component 4
Beam.
Different focal positions are obtained in the step 5 to comprise the following steps：3rd motor 19 drives the 4th optics member device
Part 5 is moved, so as to obtain the hot spot 12 of different focal positions.
The present invention incides the first optical component 2 first from top to bottom in use, laser beam emitting device 1 projects laser
On, the first component of optics 2 can adjust corresponding position with the first motor 17；After on the first optical component 2, enter
Enter the second optical component 3, the position of the second optical component 3 is fixed；The component 4 of optics the 3rd is under the second component 3, light
Corresponding position can be adjusted with the second motor 18 by learning the 3rd component 4；Laser is by entering the after the component 4 of optics the 3rd
Four optical components 5, the component 5 of optics the 4th is under the component 4 of optics the 3rd, and the component 5 of optics the 4th is by the 3rd motor
19 connections, can carry out the relative adjustment of position；Laser is after the optical component 5 of optics the 4th, the work focused on after difference
On part 7.
Beam diameter in the present invention between the 3rd optical component 4 and the 4th optical component 5 can be larger
Changed in scope.
By controlling the position of the 4th optical component 5, the focal position of final focal beam spot 12 can be regulated and controled.
Laser enters after the first optical component 2, and light beam is converted into focusing light, therefore the first optical component by diverging light
2 selections are positive lens, the preferably less lens of focal length.But in view of laser from optical fiber beginning to the first optical component 2
Distance can not be too small, therefore the preferred focal length of the first optical component 2 can not be excessively small.
To control the beam diameter between the 3rd optical component 4 and the 4th optical component 5, the first optical component
2 and the 3rd optical component 4 can occur relative motion in position along along laser beam axis direction.First optical component 2 is by
One motor 17 drives operating position movement, and the 3rd optical component 4 also drives operating position relative movement by the second motor 18.
Laser enters after the second optical component 3, and light beam is converted into diverging light, therefore the second optical component by focusing light
3 one are particularly preferred mode for negative lens.Laser is after the first optical component 2, and light beam is converted into focusing by diverging light
Light.When the first optical component 2 is moved to a position, certain angle of divergence will be had by focusing on light.The laser beam is by fixing
The second optical component 3 after, light beam is converted into diverging light by focusing light, the corresponding angle of divergence for having one.Then, the 3rd optics
Component 4 is moved to a specific compensation position, and this position reduces the angle of divergence of light beam, and it is passed through the 3rd optics
The collimated light beam of a correspondence beam diameter can be formed after component 4.
The directional light of different-diameter is after the 4th optical component 5, and directional light changes into collection optically focused.Different light beams is straight
Footpath directional light will possess the focal beam spot of different-diameter size after the 4th optical component 5.
In addition, adjusting the position of the 4th optical component 5 by the 3rd motor 19, the focus position of focal beam spot can be controlled
Put, and spot diameter size can be kept constant.
Embodiment 1：
The present embodiment is the embodiment that spot diameter is adjusted.
Such as Fig. 2（a）Shown, laser beam 8 is a diverging light, is incided on the first optical component 2, and lead to successively
Cross the second optical component 3.Then the laser beam forms an a diameter of d after the 3rd optical component 4 collimation11It is flat
Row laser beam.The collimated light beam focuses on workpiece surface after the 4th optical component 5 again, to realize that the laser to workpiece adds
Work, a diameter of d of laser spot now focused on workpiece12。
In Fig. 2（b）In, when equipment conversion processing workpiece, the thickness and material of workpiece may change, for example institute
Need the thickness of workpiece thickening, be now accomplished by increasing the diameter d for focusing on hot spot 12 on the surface of workpiece 722, it is necessary to make d22> d12。
In order that the diameter d of focal beam spot 1222Increase, the first motor 17 will drive the first optical component 2 to move Z along optical axis direction21
Distance.As compensation, the 3rd optical component 4 will move Z under the driving of the second motor 18 along optical axis direction22Distance.At this moment,
Second light beam 10 is formed with incident 3rd optical component 4 of a specific angle after the 3rd optical component 4 collimation
One a diameter of d21The 3rd parallel light beam 11, d here21<d11.The 3rd parallel light beam 11）By the 4th optical component
One a diameter of d of workpiece surface formation is focused on after 522Hot spot 12, obtain d22>d12。
In Fig. 2（c）In, when the thickness of required workpiece is further thickening, now it is accomplished by continuation increase and focuses on the table of workpiece 7
The diameter d of hot spot 12 on face32, it is necessary to make d32 >d22.In order that the diameter d of focal beam spot 1232Further increase, the first motor
17 will continue to drive the first optical component 2 to move Z along optical axis direction32Distance.As compensation, the 3rd optical component 4 will be
Under the driving of second motor 18 Z is moved along optical axis direction33Distance.At this moment, the second light beam 10 is incident with another specific angle
3rd optical component 4, an a diameter of d is formed after the 3rd optical component 4 collimation31The 3rd parallel light beam 11,
Here d31<d21.The 3rd parallel light beam 11 focuses on one a diameter of d of workpiece surface formation after the 4th optical component 532
Hot spot 12, obtain d32>d22。
Embodiment 2：
The present embodiment is the embodiment that focal position is adjusted.
Such as Fig. 3（a）Shown, laser beam 8 is a diverging light, is incided on the first optical component 2, and lead to successively
An a diameter of d is formed after crossing the second optical component 3, the 3rd optical component 4 collimation11Parallel laser light beam.This is parallel
Light beam focuses on one ad-hoc location of workpiece surface after the 4th optical component 5 again, to realize the Laser Processing to workpiece,
The a diameter of d of laser spot now focused on workpiece12。
Such as Fig. 3（b）Shown, when equipment needs to change processing workpiece, the position of focused spot may be also required to change therewith
Become, to ensure to process workpiece material in high quality.In order that the diameter d of focal beam spot 1212It is constant, but change focal position, the
Three motors 19 will drive the 4th optical component 5 to move Z along optical axis direction41Distance.3rd light beam 11 passes through the 4th optics member device
Another location on workpiece will be focused on after part 5, the corresponding focal position of focal beam spot changes Z42, but spot size keeps constant.
Such as Fig. 3（c）It is shown, it is that the position of focused spot may when equipment needs the workpiece processed to change again
Need further to change, it is also can guarantee that and process workpiece material in high quality.In order that the diameter d of focal beam spot 1212
Still keep constant, but change focal position, the 3rd motor 19 will further drive the 4th optical component 5 to be transported along optical axis direction
Dynamic Z51Distance.3rd light beam 11 will focus on another position on workpiece after the 4th optical component 5, and focal position will occur
Z52Change, but spot size keep it is constant.
Claims (9)
1. the adjustable laser Machining head of a kind of spot diameter and focal position and its control method, including shell, it is characterised in that：
The shell（13）Laser beam emitting device is inside sequentially provided with from top to bottom（1）, the first optical component（2）, the second optics member device
Part（3）, the 3rd optical component（4）, the 4th optical component（5）With protection eyeglass（6）, the laser beam emitting device（1）It is perpendicular
Directly it is fixed on shell（13）Top, laser beam emitting device（1）Emission port be embedded in shell（13）It is interior, the second optics member
Device（3）With protection eyeglass（6）Shell is fixed on by the connecting rod of the left and right sides respectively（13）Madial wall on, described first
Optical component（2）Side pass through the first attachment means（14）Connect the first motor（17）, the 3rd optical component（4）One
Side passes through the second attachment means（15）Connect the second motor（18）, the 4th optical component（5）Side pass through the 3rd connection dress
Put（16）Connect the 3rd motor（19）；
Control method comprises the following steps：1）S1, laser beam emitting device（1）Outgoing laser beams（8）By the first optics member device
Part（2）After pool the first light beam（9）；2）S2, the first light beam（9）By the second optical component（3）With the 3rd optics member device
Part（4）The 3rd light beam of different beam diameters is formed afterwards（11）；3）S3, the 3rd light beam of different-diameter（11）By the 4th optics
Component（5）It is final after convergence to focus on the hot spot for forming corresponding different spot diameters（12）；4）S4, passes through different-diameter
Hot spot（12）, and by the 4th optical component（5）Regulate and control the diverse location of focus, different types of workpiece is processed with this
（7）.
2. a kind of spot diameter as claimed in claim 1 and the adjustable laser Machining head in focal position and its control method, its
It is characterised by：First motor（17）, the second motor（18）With the 3rd motor（19）It is located at shell（13）Surface.
3. a kind of spot diameter as claimed in claim 1 and the adjustable laser Machining head in focal position and its control method, its
It is characterised by：First optical component（2）For positive lens, and the first optical component（2）With small focal length,
One optical component（2）Focal range be 20-50mm.
4. a kind of spot diameter as claimed in claim 1 and the adjustable laser Machining head in focal position and its control method, its
It is characterised by：Second optical component（3）For negative lens.
5. a kind of spot diameter as claimed in claim 1 and the adjustable laser Machining head in focal position and its control method, its
It is characterised by：3rd optical component（4）For positive lens.
6. a kind of spot diameter as claimed in claim 1 and the adjustable laser Machining head in focal position and its control method, its
It is characterised by：4th optical component（5）For positive lens.
7. a kind of spot diameter as claimed in claim 1 and the adjustable laser Machining head in focal position and its control method, its
It is characterised by comprising the following steps in the step 2：1）First light beam（9）By the second optical component（3）Diverging is formed afterwards
The second light beam（10）；2）Second light beam（10）By the 3rd optical component（4）The 3rd light of different beam diameters is formed afterwards
Beam（11）.
8. a kind of spot diameter as claimed in claim 1 and the adjustable laser Machining head in focal position and its control method, its
It is characterised by obtaining the hot spot of diverse location in the step 5（12）Comprise the following steps：1）First motor（17）Driving first
Optical component（2）Certain distance is moved along vertical optical axis direction；2）Subsequent second motor（18）Drive the 3rd optics member device
Part（4）The specific compensation distance of motion；3）Make the second light beam（10）Through the 3rd optical component（4）Formation one is specific after convergence
The collimated light beam of beam diameter.
9. a kind of spot diameter as claimed in claim 1 and the adjustable laser Machining head in focal position and its control method, its
It is characterised by that different focal positions are obtained in the step 5 to be comprised the following steps：3rd motor（19）Drive the 4th optics member
Device（5）Motion, so as to obtain the hot spot of different focal positions（12）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710565616.7A CN107138854A (en) | 2017-07-12 | 2017-07-12 | The adjustable laser Machining head of a kind of spot diameter and focal position and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710565616.7A CN107138854A (en) | 2017-07-12 | 2017-07-12 | The adjustable laser Machining head of a kind of spot diameter and focal position and its control method |
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| Publication Number | Publication Date |
|---|---|
| CN107138854A true CN107138854A (en) | 2017-09-08 |
Family
ID=59776287
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710565616.7A Pending CN107138854A (en) | 2017-07-12 | 2017-07-12 | The adjustable laser Machining head of a kind of spot diameter and focal position and its control method |
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Cited By (5)
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| CN109718475A (en) * | 2018-12-19 | 2019-05-07 | 武汉奇致激光技术股份有限公司 | Adjustable spot high-peak power laser exports the guard method of hand tool focus lamp |
| CN111168230A (en) * | 2020-03-04 | 2020-05-19 | 济南邦德激光股份有限公司 | Focusing device and focusing method of laser cutting machine |
| CN112276346A (en) * | 2020-10-22 | 2021-01-29 | 温州大学 | Automatic accurate focusing processing head of super high power laser cutting |
| CN113977072A (en) * | 2021-11-30 | 2022-01-28 | 广东宏石激光技术股份有限公司 | Variable-spot diffraction element-based zoom laser processing system and method |
| CN114326066A (en) * | 2022-01-14 | 2022-04-12 | 苏州迅镭激光科技有限公司 | ZOOM ZOOM optical system with double-piece aspheric mirror capable of continuously changing magnification |
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| CN113977072A (en) * | 2021-11-30 | 2022-01-28 | 广东宏石激光技术股份有限公司 | Variable-spot diffraction element-based zoom laser processing system and method |
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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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