CN207656075U - A kind of laser-processing system - Google Patents
A kind of laser-processing system Download PDFInfo
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- CN207656075U CN207656075U CN201721752149.0U CN201721752149U CN207656075U CN 207656075 U CN207656075 U CN 207656075U CN 201721752149 U CN201721752149 U CN 201721752149U CN 207656075 U CN207656075 U CN 207656075U
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Abstract
The utility model embodiment discloses a kind of laser-processing system, including laser power output module, beam splitter, photodetector, power control module and human-computer interaction module.Laser power output module receives switch control signal and voltage analog controls signal to modulate the output power of laser；Laser beam is divided into two bundles by beam splitter, by the big beam exit of energy accounting to workpiece to be processed；Photodetector converts the optical pulse information of the small light beam of the energy accounting of acquisition to electric signal, and when detection present output power changes, electric signal is sent to power control module；Power control module includes energy controller and motion controller, and the configuration parameter that energy target values, electric signal and the user that energy controller is sent according to motion controller are inputted by human-computer interaction module calculates control voltage in real time.The application realizes the real-time control of laser output power, improves the stability of laser processing.
Description
Technical field
The utility model embodiment is related to laser technology field, more particularly to a kind of laser-processing system.
Background technology
Laser machine is that the laser that will launch from laser is focused into the laser of high power density through light path system
Beam.Laser beam is irradiated to workpiece surface, and workpiece is made to reach fusing point or boiling point, at the same the high pressure gas coaxial with light beam will melt or
Gasified metal is blown away.With the movement of light beam and workpiece relative position, material is finally set to form joint-cutting, to reach the mesh of processing
's.
Laser processing, instead of traditional mechanical blades, has precision high, operation is quick, is not limited to sightless light beam
The features such as limitation of processing graphic pattern, Automatic Typesetting save material, and processing cost is low, will gradually improve or be replaced in traditional metal
Processing technique equipment.The mechanical part of laser probe and workpiece are contactless, will not cause to scratch to workpiece surface at work；Work
Make it is efficient, be not necessarily to following process；Heat affected area is small, and sheet deformation is small, and joint-cutting is narrow (0.1~0.3mm)；The workpiece machined
There is no mechanical stress, no shear burr；High precision machining, reproducible, not attacking material surface；Numerical control programming can be processed and appoint
The plan view of meaning can be processed the prodigious whole plate of breadth, be not necessarily to mold, economical time saving.
In the prior art, during being processed to material, without any energy measurement function, only it is monthly maintenance or
Power is measured in maintenance process.Laser process equipment standard configuration energy is popped one's head in, and after processing a period of time, system prompt measures
Laser energy carries out more if it find that energy declines or decaying with regard to carrying out light path maintaining or trim process technological parameter
It mends, for example improves processing times, ability is provided, reduce sweep speed etc.；Either after often processing a sheet stock, measure primary
Energy, if it find that energy declines, software is centainly compensated automatically, after compensation rate exceeds a certain range, prompts to require to machine
Platform maintains.
For laser process equipment in workpiece process, light beam, at the focus of a very little, makes focal point through lens focus
Reach high power density, and power density directly determines the depth of processing, to directly affect the quality of material processing.It is existing
Technology can not be monitored laser energy and correct in process, if occurring the fluctuation of energy in process
Or energy attenuation, processing result can be caused different from expection, processing quality goes wrong.
In consideration of it, how to realize in laser processing procedure, real-time control is carried out to laser energy, to improve laser processing
Stability ensures material processing quality, is those skilled in the art's urgent problem to be solved.
Utility model content
The utility model embodiment provides a kind of laser-processing system, to control the defeated of power in laser processing procedure
Go out, improve the stability of laser processing, ensure that material processing quality.
In order to solve the above technical problems, the utility model embodiment provides following technical scheme：
The utility model embodiment provides a kind of laser-processing system, including：
Laser power output module, beam splitter, photodetector, power control module and human-computer interaction module；
The laser power output module is used to receive the switch control signal and voltage that the power control module is sent
Analog control signal, with synchronous and modulation laser output power；
The laser beam that the beam splitter is used to export the laser power output module, according to preset energy ratio
Example is divided into two beams, and by the first big beam exit of energy accounting to workpiece to be processed, the second small light beam of energy accounting is incident to
The photodetector；
The photodetector is used to convert the optical pulse information of second light beam of acquisition to electric signal, and by institute
It states electric signal and is sent to the power control module；
The power control module includes energy controller and motion controller, for being controlled level signal as switch
Signal, and the laser power output module is sent to according to the voltage analog control signal of control voltage conversion；The fortune
The energy target values of the workpiece to be processed demand are sent to the energy controller by movement controller；The energy controller root
According to the energy target values, the electric signal and configuration parameter input by user, control voltage is calculated in real time；
The human-computer interaction module is used to carry out data interaction with the power control module.
Optionally, the laser power output module includes pulse laser, and the pulse laser passes through the power
Switch control signal and voltage analog the control signal that control module is sent carry out the modulated in real time of power, to be waited for described in output
Power needed for workpieces processing.
Optionally, the laser power output module includes pulse laser and acousto-optic modulator；
The voltage analog control signal that the acousto-optic modulator is sent by using the power control module is to applying
Voltage be modulated, the pulsed laser beam of pulse laser transmitting will be received, be converted into the level-one of different luminous intensities
Diffracted beam, and the first-order diffraction light beam is incident to the beam splitter.
Optionally, the beam splitter is according to 1：The laser beam is divided into two beams by 99, is 99% by energy accounting
The first light beam reflex to workpiece to be processed, by energy accounting be 1% the second light beam be incident to the photodetector.
Optionally, the wavelength of the pulse laser be 355nm, mean power 11w, pulse frequency 40kHz-
90kHz, single pulse energy are 275 μ j.
Optionally, the human-computer interaction module further includes display, for showing the laser power currently exported to user
And the machining state of the workpiece to be processed.
Optionally, the switch control signal is Transistor-Transistor Logic level signal.
Optionally, further include：
Alarm, for when detecting present output power more than preset threshold range, alarming.
Optionally, the power control module further includes filter.
The utility model embodiment provides a kind of laser-processing system, including the separation of laser power output module, light beam
Device, photodetector, power control module and human-computer interaction module.Laser power output module is for receiving power control module
The switch control signal and voltage analog of transmission control signal, to modulate the output power of laser；Beam splitter is used for will
The laser beam of laser power output module output, is divided into two beams according to preset energy ratio, by the first big light of energy accounting
Beam is emitted to workpiece to be processed, and the second small light beam of energy accounting is incident to photodetector；Photodetector will be for that will acquire
The optical pulse information of the second light beam be converted into electric signal, when detecting present output power and changing, electric signal is sent
To power control module；Power control module includes energy controller and motion controller, for using level signal as switch
Signal is controlled, and laser power output module is sent to according to the voltage analog control signal of control voltage conversion；Movement control
The energy target values of workpiece to be processed demand are sent to energy controller by device processed；Energy controller is according to energy target values, electricity
Signal and configuration parameter input by user calculate control voltage in real time；Human-computer interaction module is used to carry out with power control module
Data interaction.
The advantages of technical solution provided by the present application, is, by detecting the fluctuation of current output laser energy, utilizes energy
Control voltage is calculated according to energy target values, energy fluctuation information and configuration parameter in amount controller in real time, is exported to laser
Power carries out real-time energy compensating, to realize in laser processing procedure, to the laser of laser power output module output
Power carries out modulated in real time, and the accurate laser energy exported needed for rapidoprint, effectively avoiding can volume production in process
Raw fluctuation or ability decaying lead to process quality issue, improve the stability of laser processing, ensure material processing quality.
Description of the drawings
For the clearer technical solution for illustrating the utility model embodiment or the prior art, below will to embodiment or
Attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
Some embodiments of the utility model, for those of ordinary skill in the art, without creative efforts,
Other drawings may also be obtained based on these drawings.
Fig. 1 is a kind of specific implementation mode structure diagram for the laser-processing system that the utility model embodiment provides；
Fig. 2 is another specific implementation mode structure chart for the laser-processing system that the utility model embodiment provides；
Fig. 3 is another the specific implementation mode structure chart for the laser-processing system that the utility model embodiment provides.
Specific implementation mode
In order to make those skilled in the art more fully understand the utility model, below in conjunction with the accompanying drawings and it is embodied
The utility model is described in further detail for mode.Obviously, described embodiment is only the utility model part
Embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Go out the every other embodiment obtained under the premise of creative work, shall fall within the protection scope of the present invention.
Term " first ", " second ", " third " " in the description and claims of this application and above-mentioned attached drawing
Four " etc. be for distinguishing different objects, rather than for describing specific sequence.In addition term " comprising " and " having " and
Their any deformations, it is intended that cover and non-exclusive include.Such as contain the process of series of steps or unit, system,
The step of product or equipment are not limited to list or unit, but the step of may include not listing or unit.
After describing the technical solution of the utility model embodiment, detailed description below the application's is various unrestricted
Property embodiment.
Referring firstly to Fig. 1, Fig. 1 is the laser-processing system that provides of the utility model embodiment in a kind of specific embodiment party
Structure diagram under formula, the utility model embodiment may include the following contents：
Laser-processing system may include laser power output module 1, beam splitter 2, photodetector 3, power control
Module 4 and human-computer interaction module 5.
Laser power output module 1 is used to receive the switch control signal and voltage analog of the transmission of power control module 4
Signal is controlled, with synchronous and modulation laser output power.
In a kind of specific embodiment, referring to Fig. 2, laser power output module 1 may include pulse laser and
Acousto-optic modulator.
The voltage analog control signal that acousto-optic modulator is sent by using power control module to the voltage of application into
Row modulation will receive the pulsed laser beam of pulse laser transmitting, be converted into the first-order diffraction light beam of different luminous intensities, and will
First-order diffraction light beam is incident to beam splitter.
That is, acousto-optic can be used by the way that the principle of diffraction can occur when medium by ultrasonic wave disturbance using light
Modulator obtains the first-order diffraction light beam of different luminous intensities with an angle incidence by applying different voltage.When acousto-optic tune
The voltage that device processed applies is 0~1V, and when input voltage is 1V, the efficiency of first-order diffraction light is maximum, diffraction efficiency about 90%, if
When voltage is 0V, not diffracted laser completely is equivalent to shutdown laser, if control voltage is set as some value in 0V~1V
When, the respective value of the performance number meeting existence anduniquess of laser diffraction, in the beam emissions to workpiece to be processed that diffraction is obtained, just
It can be by the size of adjusting control voltage, to realize the adjusting of laser power.Wherein, zero order beam can be by with the hot device of fan
Monolithic absorbs.
In a kind of specific embodiment, the wavelength of pulse laser can be 355nm, mean power 11w, pulse frequency
It can be 275 μ j that rate, which can be 40kHz-90kHz, single pulse energy,.Certainly, the wavelength of pulse laser, mean power, pulse frequency
Rate, single pulse energy are not limited to the above situation, and pulse laser can be laser under any parameter, and the application does not do this
Any restriction.
Since acousto-optic modulator is in diffraction, it is impossible to the laser energy of laser emitting is subjected to diffraction completely, it is maximum
Only 90% diffraction efficiency, it is supreme to lose the 10% of former laser emitting energy, the loss of energy is caused, and increase acousto-optic tune
Device processed can increase the complexity and debugging difficulty of entire laser-processing system.
Preferably, under another embodiment, referring to Fig. 3, laser power output module 1 can only swash including pulse
Light device, the switch control signal and voltage analog that pulse laser is sent by power control module control signal and carry out power
Modulated in real time, to export power needed for workpiece to be processed.
Preferably, it can be 40kHz- that the wavelength of pulse laser, which can be 355nm, mean power 11w, pulse frequency,
90kHz, single pulse energy can be 275 μ j.Certainly, the wavelength of pulse laser, mean power, pulse frequency, single pulse energy
It is not limited to the above situation, pulse laser can be laser under any parameter, and the application does not do this any restriction.
For above-described embodiment, entire light path system eliminates acousto-optic modulator, and energy controller directly transmits electricity
Pressure Analog control signal and switch control signal are sent to pulse laser, modulate the control voltage or control frequency of laser
Rate.Whole system is more succinct, stability higher, and optical system is safeguarded simpler；Energy is adequately applied, and is saved
10% energy.
The laser beam that beam splitter 2 is used to export laser power output module, is divided into according to preset energy ratio
Two beams, by the first big beam exit of energy accounting to workpiece to be processed, the second small light beam of energy accounting is incident to photoelectricity spy
Survey device.
Beam splitter 2 or beam splitter, or light splitting eyeglass.Optionally, beam splitter 2 can be according to 1：99 will swash
Light light beam is divided into two beams, the first light beam that energy accounting is 99% is reflexed to the workpiece to be processed on processing table top, by energy
The second light beam that accounting is 1% is incident to photodetector 3.
Photodetector 3 is used to convert the optical pulse information of the second light beam of acquisition to electric signal, and electric signal is sent
To power control module.
Detect the laser beam for laser power output module 1 being exported through beam splitter 2 in real time using photodetector 3
The a small amount of energy separated, using as detection 1 present output power of laser power output module whether fluctuate, to realize and
Shi Jinhang energy compensatings.
Photodetector 3 can survey single pulse information, such as single pulse energy, laser pulse width of laser beam etc.,
Photodetector 3 is mainly used for detecting the fluctuation situation of each pulse energy, and fluctuation situation is sent to power control by electric signal
Energy controller in molding block 4 carries out data calculating and feedback.Electric signal carries the fluctuation information of current output energy.
Power control module 4 includes energy controller and motion controller, for using level signal as switch control letter
Number, and laser power output module is sent to according to the voltage analog control signal of control voltage conversion；Motion controller will
The energy target values of workpiece to be processed demand are sent to energy controller；Energy controller according to energy target values, electric signal with
Configuration parameter input by user calculates control voltage in real time；
It is calculated and is controlled using computer in the prior art, but since Windows systems are non real-time nature system, institute
It is controlled and is required with unappeasable laser energy real-time.High-performance processor can be used to adopt the relevant data of energy
Collection, statistics are calculated and are fed back.
In order to realize that drilling processing is synchronous with energy hole and does corresponding control, energy controller and motion controller can
It is realized by two paths of signals, is all the way Transistor-Transistor Logic level signal (switch control signal), be responsible for switch control；It is analog quantity control all the way
System transmits energy target values to energy controller by motion controller, and energy controller sends out corresponding control voltage to acousto-optic
Modulator (or pulse laser), acousto-optic modulator (or pulse laser) control control energy according to energy target values.
When detecting that present laser output energy fluctuates, (energy can be carried according to energy target values, electric signal
Fluctuation information) with configuration parameter input by user, control voltage is calculated in real time, using as energy compensating, in real time to energy
It is controlled.
Optionally, power control module further includes filter.Energy target values are a stable size, by analog quantity control
Low-pass filter can be used in order to filter out signal transmission interference in system, ensures that energy target values are stable.
Human-computer interaction module 5 is used to carry out data interaction with power control module 4.User is write by human-computer interaction module 5
Enter configuration parameter, the change energy balane algorithm etc. of energy controller, or according to the material information the input phase of workpiece to be processed
The technique initialization parameter answered and corresponding technological process；Energy controller in power control module 4 can by various data and
State is sent to human-computer interaction module.Optionally, human-computer interaction module 5 can be intelligent mobile terminal, utilize industrial PC PC etc..
Human-computer interaction module 5 can be attached with power control module 4 by USB.
Various data and state can be also sent on computer to non real-time nature by energy controller, be shown, prompt or
Alarm, therefore human-computer interaction module 5 may also include display, the laser power for currently being exported to user's displaying and work to be processed
The machining state of part；It may also include alarm, for when detecting present output power more than preset threshold range, being reported
It is alert.
In the technical solution that the utility model embodiment provides, by detecting the fluctuation of current output laser energy, profit
Control voltage is calculated according to energy target values, energy fluctuation information and configuration parameter in real time with energy controller, to real
In present laser processing procedure, modulated in real time, accurate output processing are carried out to the laser power of laser power output module output
Laser energy needed for material, effectively avoiding energy production fluctuation or ability decaying in process causes processing quality to be asked
Topic improves the stability of laser processing, ensures material processing quality.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with it is other
The difference of embodiment, just to refer each other for same or similar part between each embodiment.
Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure
And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These
Function is implemented in hardware or software actually, depends on the specific application and design constraint of technical solution.Profession
Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered
Think to exceed the scope of the utility model.
A kind of laser-processing system provided by the utility model is described in detail above.Tool used herein
Body example is expounded the principles of the present invention and embodiment, and the explanation of above example is only intended to help to understand
The technical solution of the utility model and its core concept.It should be pointed out that for those skilled in the art,
Under the premise of not departing from the utility model principle, several improvements and modifications can be made to this utility model, these improve and
Modification is also fallen into the protection domain of the utility model claims.
Claims (9)
1. a kind of laser-processing system, which is characterized in that including：
Laser power output module, beam splitter, photodetector, power control module and human-computer interaction module；
The laser power output module is used to receive the switch control signal and voltage analog that the power control module is sent
Amount control signal, with synchronous and modulation laser output power；
The laser beam that the beam splitter is used to export the laser power output module, according to preset energy ratio point
At two beams, by the first big beam exit of energy accounting to workpiece to be processed, the second small light beam of energy accounting is incident to described
Photodetector；
The photodetector is used to convert the optical pulse information of second light beam of acquisition to electric signal, and by the electricity
Signal is sent to the power control module；
The power control module includes energy controller and motion controller, for using level signal as switch control letter
Number, and the laser power output module is sent to according to the voltage analog control signal of control voltage conversion；The movement
The energy target values of the workpiece to be processed demand are sent to the energy controller by controller；The energy controller according to
The energy target values, the electric signal and configuration parameter input by user calculate control voltage in real time；
The human-computer interaction module is used to carry out data interaction with the power control module.
2. laser-processing system according to claim 1, which is characterized in that the laser power output module includes pulse
Laser, the switch control signal and voltage analog control that the pulse laser is sent by the power control module are believed
Number carry out power modulated in real time, to export power needed for the workpiece to be processed.
3. laser-processing system according to claim 1, which is characterized in that the laser power output module includes pulse
Laser and acousto-optic modulator；
The acousto-optic modulator controls electricity of the signal to application by using the voltage analog that the power control module is sent
Pressure is modulated, and will be received the pulsed laser beam of the pulse laser transmitting, is converted into the first-order diffraction of different luminous intensities
Light beam, and the first-order diffraction light beam is incident to the beam splitter.
4. laser-processing system according to claim 1, which is characterized in that the beam splitter is according to 1：99 will be described
Laser beam is divided into two beams, and the first light beam that energy accounting is 99% is reflexed to workpiece to be processed, is 1% by energy accounting
Second light beam is incident to the photodetector.
5. laser-processing system according to claim 2, which is characterized in that the wavelength of the pulse laser be 355nm,
Mean power is 11w, pulse frequency 40kHz-90kHz, single pulse energy are 275 μ j.
6. according to the laser-processing system described in claim 1-5 any one, which is characterized in that the human-computer interaction module is also
Including display, the machining state of laser power and the workpiece to be processed for currently being exported to user's displaying.
7. laser-processing system according to claim 6, which is characterized in that the switch control signal is believed for Transistor-Transistor Logic level
Number.
8. laser-processing system according to claim 7, which is characterized in that further include：
Alarm, for when detecting present output power more than preset threshold range, alarming.
9. laser-processing system according to claim 8, which is characterized in that the power control module further includes filtering
Device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721752149.0U CN207656075U (en) | 2017-12-13 | 2017-12-13 | A kind of laser-processing system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721752149.0U CN207656075U (en) | 2017-12-13 | 2017-12-13 | A kind of laser-processing system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108057953A (en) * | 2017-12-13 | 2018-05-22 | 广东正业科技股份有限公司 | A kind of laser-processing system and laser power control method |
| CN111975234A (en) * | 2020-08-28 | 2020-11-24 | 无锡天隆光电科技有限公司 | Power self-calibration system for laser equipment |
| WO2024001909A1 (en) * | 2022-07-01 | 2024-01-04 | 宁德时代新能源科技股份有限公司 | Laser power measurement system, welding system, and testing method for laser-welded workpiece |
-
2017
- 2017-12-13 CN CN201721752149.0U patent/CN207656075U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108057953A (en) * | 2017-12-13 | 2018-05-22 | 广东正业科技股份有限公司 | A kind of laser-processing system and laser power control method |
| CN111975234A (en) * | 2020-08-28 | 2020-11-24 | 无锡天隆光电科技有限公司 | Power self-calibration system for laser equipment |
| WO2024001909A1 (en) * | 2022-07-01 | 2024-01-04 | 宁德时代新能源科技股份有限公司 | Laser power measurement system, welding system, and testing method for laser-welded workpiece |
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