CN104002039B - A kind of laser equipment obtains the method for laser spot - Google Patents
A kind of laser equipment obtains the method for laser spot Download PDFInfo
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- CN104002039B CN104002039B CN201410177205.7A CN201410177205A CN104002039B CN 104002039 B CN104002039 B CN 104002039B CN 201410177205 A CN201410177205 A CN 201410177205A CN 104002039 B CN104002039 B CN 104002039B
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- axis
- spot
- laser
- machined layer
- laser spot
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000012545 processing Methods 0.000 claims abstract description 31
- 238000012544 monitoring process Methods 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims description 6
- 239000011159 matrix material Substances 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 241000931526 Acer campestre Species 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000608 laser ablation Methods 0.000 description 1
- 238000010330 laser marking Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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 laser technology field, be specifically related to a kind of method obtaining laser spot, described step comprises determining that focus corresponding scope H1 on Z axis coordinate；Establishment processed file, is set to several machined layer by file to be processed, the Z axis coordinate in the most corresponding scope H1 of each machined layer；Swash and be transferred to process scanning system and Z axis kinetic control system by the information of each machined layer by operation system of software, form Complete three-dimensional coordinate system and obtain graphics processing；By monitoring system, the graphics processing of different machined layer is carried out live width monitoring, obtain multiple line width values；By by multiple line width values by fitting to a curve, the Z axis coordinate corresponding to point the thinnest on curve is the Z axis coordinate that focus position is corresponding.On the one hand the present invention improves the work efficiency of laser equipment process debugging by a kind of method obtaining laser spot of design, on the other hand can accurately obtain Laser Processing focus, it is ensured that the performance of laser instrument processing.
Description
Technical field
The present invention relates to laser technology field, be specifically related to a kind of method that laser equipment obtains laser spot.
Background technology
At present, most industrial lasers equipment is all to utilize focusing system, and laser focusing becomes high-power close
The tiny hot spot of degree carries out retrofit, therefore the focusing power of focusing system determines its working ability.Actual
In production, the laser focal of focusing system has difference slightly because of amasthenic lens and the difference of optical system
Different.For the laser equipment of batch production, obtain the laser focal of focusing system the most rapidly and accurately, become
A difficult problem for laser technique for applying.
The method of existing acquisition laser focal mainly has a following two:
1, vertically move focusing system, processed the size of spark by human eye observation, it is judged that its laser focal,
But this mode degree of accuracy is the highest, and human eye observation's spark is being used to there is the biggest potential safety hazard.
2, motor drives focusing system to vertically move, and uses photoelectric sensor to detect, but uses photoelectric transfer
Sensor has several lacking: one is to increase cost, and two is to need software to coordinate and increase corresponding function, and three is to make
Device structure is more complicated.
Summary of the invention
The technical problem to be solved in the present invention is, for the drawbacks described above of prior art, it is provided that a kind of acquisition
The method of laser spot, it is possible to find the processing focus of laser equipment rapidly and accurately, and improve source, laser apparatus
The work efficiency of standby process debugging, it is ensured that the performance of Laser Processing.
The technical solution adopted for the present invention to solve the technical problems is: provide a kind of laser equipment to obtain laser
The method of focal length, this laser equipment includes operation system of software, processing scanning system, Z axis motor control system
System and monitoring system, this Z axis control system is provided with focusing system, and wherein, described method includes:
(1) focus focal range H1 on Z axis coordinate is determined；
(2) establishment processed file, is set to several machined layer by file to be processed, and each machined layer is divided
Z axis coordinate in not corresponding focal range H1；
(3) it is transferred to process scanning system and Z axis by the information of each machined layer by operation system of software
Kinetic control system, forms Complete three-dimensional coordinate system and obtains graphics processing；
(4) by monitoring system, the graphics processing of different machined layer is carried out live width monitoring, obtain multiple line width values；
(5) by multiple line width values being fitted to a curve, the Z axis corresponding to point the thinnest on curve
Coordinate is the Z axis coordinate that focus position is corresponding.
Wherein, preferred version is: in described step (1), and focal range H1 is by regulation Z axis height,
According to hot spot from large to small, then the Z axis coordinate corresponding to process that changes from small to big is focal range H1, this Jiao
Include that least one set spot size is identical but corresponding different Z axis coordinate away from scope H1.
Wherein: in described step (1), determine that focal range is by regulation Z axis height, according to bigger light
The Z axis height that speckle is corresponding primarily determines that focal range.
Wherein, preferred version is: have identical difference between the Z axis coordinate that any two is adjacent.
Wherein, preferred version is: described Z axis kinetic control system is to be controlled it at Z axis by motor
On move up and down.
Wherein, preferred version is: described motor is linear drive motor or stepper drive motors.
Wherein, preferred version is: described monitoring system is microscope.
Wherein, preferred version is: described processed file is that the rapidoprint to identical material is processed obtaining
's.
Wherein, preferred version is: described processed file can be divided into the matrix square of a 3x3, each
Square is a machined layer.
Wherein, preferred version is: in described matrix square, and each machined layer not same color is carried out
Distinguish.
Wherein, preferred version is: described focal range H1 includes minimum light spot, and these minimum light spot two ends are appointed
Z axis coordinate corresponding to one a pair size same spot is the beginning and end of focal range H1.
The beneficial effects of the present invention is, compared with prior art, the present invention is by dividing file to be processed
Becoming some machined layer, the corresponding individually Z value coordinate figure of each machined layer, by each machined layer image
Process and obtain multiple line width values, fit to a curve by the plurality of line width values, the thinnest on this curve
Point is focus, thus is obtained the focusing of laser by Z axis coordinate, and the method is simple, quickly, accurately,
Simultaneously simple at its supporting apparatus structure, cost-saved, raising work efficiency, it is ensured that laser instrument is processed
Performance.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the schematic flow sheet that the embodiment of the present invention obtains laser spot；
Fig. 2 is the schematic diagram of the laser equipment acquisition focus control method of the embodiment of the present invention；
Fig. 3 is the structural representation of embodiment of the present invention processed file.
Detailed description of the invention
In conjunction with accompanying drawing, presently preferred embodiments of the present invention is elaborated.
As in figure 2 it is shown, the embodiment of the present invention provides a kind of laser equipment to obtain laser spot method, this laser
Equipment includes operation system of software 31, processing scanning system 34, monitoring system 35 and Z axis motor control system
System 33, this Z axis kinetic control system 33 is provided with focusing system 32.
As depicted in figs. 1 and 2, the step of the present embodiment acquisition laser spot method includes:
(1) focus focal range H1 on Z axis coordinate is determined；This focal range H1 is by regulation Z
Axle height, according to the change of spot size, primarily determines that hot spot from large to small, then becomes corresponding to big process
Z axis coordinate is focal range H1, this focal range H1 include that least one set spot size is identical but correspondence not
Same Z axis coordinate.In the present embodiment, hot spot descending change from small to big again during, include
Minimum light spot, after determining this focal range H1, down-stream finds out focus in this focal range.
There is the hot spot that some sizes are identical in the minimum light spot two ends of this enforcement, these minimum light spot two ends arbitrary a pair big
Z axis coordinate corresponding to little same spot is the beginning and end of focal range H1..
(2) establishment processed file, is set to several machined layer by file to be processed, and each machined layer is respectively
Z axis coordinate in corresponding focal range；
(3) it is transferred to process scanning system and Z axis by the information of each machined layer by operation system of software
Kinetic control system, forms Complete three-dimensional coordinate system and obtains graphics processing；
(4) by monitoring system, the graphics processing of different machined layer is carried out live width monitoring, obtain multiple line
Width values；
(5) by multiple line width values being fitted to a curve, the Z axis corresponding to point the thinnest on curve
Coordinate is the Z axis coordinate that focus position is corresponding, and can obtain the focal length of laser.
In the present embodiment, described Z axis kinetic control system 33 is to be controlled it at Z by motor
Moving up and down on axle, this motor is linear drive motor or stepper drive motors.
Processed file described in the present embodiment is that the rapidoprint to identical material is processed obtaining, this processing
File is several, and processed file is preferably divided into the matrix square of a 3x3 by the present embodiment, is obtaining focal length
Time, it is a machined layer by each square, each machined layer not same color makes a distinction, then enters
The transmission of row hierarchical information is processed with image, and the rapidoprint in the present embodiment can be to process material arbitrarily
Material, just for the rapidoprint for same processor being identical material.
In the present embodiment, the establishment of the processed file of above-mentioned steps (1) can use and arbitrarily coordinate number
The file software of writing of Ore-controlling Role realizes, and has identical difference between the Z axis coordinate that any two is adjacent
Value, this difference about 100 μm.
As in figure 2 it is shown, the present embodiment control method is: described software control system operating system will processing
File is divided into some machined layer, each machined layer to be transferred to Z with information such as corresponding Z axis coordinate one_to_one corresponding
Axle kinetic control system 33 and processing scanning system 34, drive Z axis kinetic control system 33 by motor
Move up and down along Z-direction, and by processing scanning system 34, the image of each layer is scanned, shape
Become the transmission of complete three-dimensional system of coordinate, obtain graphics processing, finally by monitoring system 35 to each layer
Graphics processing carry out wire width measuring, obtain that live width is the thinnest one layer, the Z axis coordinate figure mapped by layer,
I.e. obtain the focusing focal length of laser equipment.
Motor in the present embodiment is linear electric motors or motor, and this motor controls Z axis kinetic control system
The 33 Z axis coordinate positions driving focusing system 32, its degree of regulation reaches ± 2um.
Further, monitoring system 35 generally microscope, after processing scan operation, processing can be formed
Figure, this graphics processing is formed by multiple scanning patters, by microscope to machining locus on scanning patter
Live width measures, and obtains the machined layer corresponding to that scanning patter that live width is the thinnest, the Z of this machined layer
Axle height is exactly the Z axis height of the laser focal that the present invention is obtained.
As it is shown on figure 3, after each scan operation of processing scanning system of the present embodiment completes, by scanning result
Store in corresponding processed file；After being finally completed whole scan operation, by the institute of storage to processed file
There is scanning result to be processed, obtain graphics processing.
The embodiment of the present invention Laser Processing obtain focal length method can be applicable to laser marking, laser welding,
The field of laser processing such as laser boring and laser ablation, the wavelength of described Laser Processing can be arbitrarily to realize
The optical maser wavelength of this Laser Processing.
As described above, only preferred embodiment, it is not intended to limit the scope of the present invention,
All equivalence changes made according to scope of the present invention patent or modification, be all the present invention and contained.
Claims (10)
1. the method that laser equipment obtains laser spot, this laser equipment includes operation system of software, adds
Work scanning system, Z axis kinetic control system and monitoring system, this Z axis kinetic control system is provided with poly-
Burnt system, it is characterised in that described method includes:
(1) the focal range H1 that focus is corresponding on Z axis coordinate is determined；
(2) establishment processed file, is set to several machined layer by file to be processed, and each machined layer is respectively
Z axis coordinate in corresponding focal range H1；
(3) it is transferred to process scanning system and Z axis by the information of each machined layer by operation system of software
Kinetic control system, forms Complete three-dimensional coordinate system and obtains graphics processing；
(4) by monitoring system, the graphics processing of different machined layer is carried out live width monitoring, obtain multiple live width
Value；
(5) by multiple line width values fit to a curve, the Z axis corresponding to point the thinnest on curve is sat
Mark is the Z axis coordinate that focus position is corresponding.
The method of acquisition laser spot the most according to claim 1, it is characterised in that: described step (1)
In,
Focal range H1 is by regulation Z axis height, according to hot spot from large to small, then process institute of changing from small to big
Corresponding Z axis coordinate is focal range H1, and this focal range H1 includes that some spot sizes are identical but corresponding
Different Z axis coordinates.
The method of acquisition laser spot the most according to claim 2, it is characterised in that: any two phase
Between adjacent Z axis coordinate, there is identical difference.
The method of acquisition laser spot the most according to claim 3, it is characterised in that: described Z
Axle kinetic control system is to be controlled its moving up and down on Z axis by motor.
The method of acquisition laser spot the most according to claim 4, it is characterised in that: described motor
It is linear drive motor or stepper drive motors.
The method of acquisition laser spot the most according to claim 1, it is characterised in that: described monitoring
System is microscope.
The method of acquisition laser spot the most according to claim 1, it is characterised in that: described processing literary composition
Part is that the rapidoprint to identical material is processed obtaining.
The method of acquisition laser spot the most according to claim 7, it is characterised in that: described processing
File can be divided into the matrix square of a 3x3, and each square is a machined layer.
The method of acquisition laser spot the most according to claim 8, it is characterised in that: described matrix
In square, each machined layer not same color makes a distinction.
The method of acquisition laser spot the most according to claim 2, it is characterised in that: described Jiao
Minimum light spot is included, the Z axis that the arbitrary a pair size same spot in these minimum light spot two ends is corresponding away from scope H1
Coordinate is the beginning and end of focal range H1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410177205.7A CN104002039B (en) | 2014-04-29 | 2014-04-29 | A kind of laser equipment obtains the method for laser spot |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410177205.7A CN104002039B (en) | 2014-04-29 | 2014-04-29 | A kind of laser equipment obtains the method for laser spot |
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| Publication Number | Publication Date |
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| CN104002039A CN104002039A (en) | 2014-08-27 |
| CN104002039B true CN104002039B (en) | 2016-08-24 |
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Families Citing this family (14)
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| DE102015103047B3 (en) | 2015-03-03 | 2016-08-18 | Trumpf Laser- Und Systemtechnik Gmbh | Initial spacing for laser processing |
| CN106141427B (en) * | 2015-04-27 | 2018-05-18 | 维嘉数控科技（苏州）有限公司 | The automatic method for obtaining laser spot |
| DE102016219928A1 (en) * | 2016-10-13 | 2018-04-19 | Trumpf Werkzeugmaschinen Gmbh + Co. Kg | Method and device for determining and controlling a focus position of a machining beam |
| CN106493122A (en) * | 2016-10-27 | 2017-03-15 | 苏州菲镭泰克激光技术有限公司 | The laser accurate cleaning device of part and method |
| CN106513380B (en) * | 2016-10-27 | 2019-09-17 | 苏州菲镭泰克激光技术有限公司 | The laser cleaner and method of porous network structure object |
| CN107264091B (en) * | 2017-06-22 | 2019-02-15 | 深圳市创鑫激光股份有限公司 | A kind of laser marking control method, laser marking machine and storage medium |
| CN107790891A (en) * | 2017-11-16 | 2018-03-13 | 惠州市契贝科技有限公司 | The marking method and marking device of vacuum flask |
| CN108747029A (en) * | 2018-06-04 | 2018-11-06 | 广东水利电力职业技术学院（广东省水利电力技工学校） | A kind of teaching type laser engraving cutter and control method, application |
| CN113751887B (en) * | 2020-05-28 | 2023-10-10 | 深圳市大族数控科技股份有限公司 | Detection method, device and equipment of laser processing equipment and storage medium |
| CN113418485B (en) * | 2021-06-08 | 2023-10-13 | 深圳市大族数控科技股份有限公司 | Thickness measuring device and thickness measuring method |
| CN115488494A (en) * | 2021-06-18 | 2022-12-20 | 中国科学院上海光学精密机械研究所 | Method for confirming focus of ultrafast laser micro-nano processing platform |
| CN113319423A (en) * | 2021-07-07 | 2021-08-31 | 深圳市杰普特光电股份有限公司 | Laser marking machine and adjusting method |
| CN113639637B (en) * | 2021-08-17 | 2022-06-03 | 吉林大学 | Method for detecting focus in femtosecond laser processing by using image sensor and application thereof |
| CN114235348A (en) * | 2021-11-25 | 2022-03-25 | 大连透平机械技术发展有限公司 | Focal length determining method and device of pulse laser and storage medium |
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Address after: 518000 5 / F, 1 / 2 / F, 14 / F, 17 / F, No.3 Factory building, antuoshan hi tech Industrial Park, Xinsha Road, Shajing street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Han's CNC Technology Co.,Ltd. Address before: 518000 5 / F, 1 / 2 / F, 14 / F, 17 / F, No.3 Factory building, antuoshan hi tech Industrial Park, Xinsha Road, Shajing street, Bao'an District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN HAN'S CNC SCIENCE AND TECHNOLOGY Co.,Ltd. |