CN206010148U - A kind of system of equal control laser power - Google Patents
A kind of system of equal control laser power Download PDFInfo
- Publication number
- CN206010148U CN206010148U CN201620773839.3U CN201620773839U CN206010148U CN 206010148 U CN206010148 U CN 206010148U CN 201620773839 U CN201620773839 U CN 201620773839U CN 206010148 U CN206010148 U CN 206010148U
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- Prior art keywords
- data processor
- switch
- laser
- cutting
- motion vector
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Abstract
The utility model discloses a kind of system of equal control laser power, including be sequentially connected motion controller, data processor, CO2 laser instrument, the data processor is stored with switch optical parameter set in advance, collection period；The motion controller is used for the motion vector speed of the current cutting of collection after cutting starts, and the motion vector speed is sent to data processor；The data processor is additionally operable to, according to the motion vector speed and the collection period, obtain distance parameter；The data processor is additionally operable to according to the distance parameter and the switch optical parameter, obtains switching light number of times；The data processor is additionally operable to obtain PWM waveform according to the number of times that opens the light, and controls cut-offfing for CO2 laser switch using the PWM waveform, and the CO2 laser instrument is used for the luminous power that cut-offs when control is cut according to switch.System of the present utility model can be accurately controlled the cutting power of laser tube in real time.
Description
Technical field
This utility model is related to cut field, more particularly to a kind of system of equal control laser power.
Background technology
CO2 laser cutting control systems are using the high-power laser beam irradiation workpiece for focusing on, and make irradiated material fast
Fast thawing or ablation, while by setting specific track, process expected graphics shape on workpiece.The work(of CO2 laser tubes
Rate is controlled by CO2 laser instrument, and what motion controller controlled CO2 laser tubes by controlling CO2 laser instrument goes out light work(
The size of rate, it is analog quantity that usual CO2 is used for controlling the interface of laser power size（0~5V）.As long as so motion controller is defeated
Go out an analog quantity（0~5V）Give CO2 laser instrument, it is possible to indirectly control the watt level of CO2 laser tubes.
Currently existing scheme mainly by an external variable resistance, exports one by adjusting variable-resistance resistance
The voltage of 0 ~ 5V gives CO2 laser instrument.The disadvantage of this scheme is exactly the power of CO2 laser tubes in a cutting movement
It is a steady state value, and the speed of cutting path is continually changing, this results in laser ablation workpiece where speed is low
Material will more seriously, and the degree of fast local laser ablation workpiece is possible to also deficiency, it is impossible to reaches cutting workpiece
The technological requirement of ablation uniformity.
Utility model content
This utility model is the above-mentioned deficiency for overcoming prior art, there is provided a kind of cutting power constantly becomes with cutting speed
Change, reach the CO2 cut power control systems of uniform cutting.
In order to realize that above-mentioned utility model purpose, the technical solution adopted in the utility model be：
A kind of system of equal control laser power, including be sequentially connected motion controller, data processor, CO2 swash
Light device,
The data processor be stored with set in advance switch optical parameter, collection period；
The motion controller is used for the motion vector speed of the current cutting of collection after cutting starts, and by the motion
Vector velocity is sent to data processor；
The data processor is additionally operable to, according to the motion vector speed and the collection period, obtain distance parameter；
The data processor is additionally operable to according to the distance parameter and the switch optical parameter, obtains switching light number of times；
The data processor is additionally operable to obtain PWM waveform according to the number of times that opens the light, and is controlled using the PWM waveform
CO2 laser switch cut-offs, and the CO2 laser instrument is used for luminous power when cut-offfing control cutting according to switch, wherein, institute
The size for stating PWM waveform frequency is the number of times that opens the light.
Further, the collection period is 1ms.
Further, the distance parameter is：
L=V×ΔT, wherein V are the motion vector speed of current cutting,ΔT is collection period set in advance.
Further, the switch light number of times is：
A=L × N, wherein N are switch optical parameter set in advance.
Further, the data processor is fpga chip.
Further, photoelectrical coupler is provided between the data processor and the CO2 laser instrument.
Compared with prior art, the beneficial effects of the utility model
The system of equal control laser power of the present utility model can be accurately controlled the cutting power of laser tube in real time,
So that when cutting speed changes, can also reach the technological requirement of cutting workpiece ablation uniformity.
Description of the drawings
Fig. 1 is the system module block diagram of equal control laser power of the present utility model.
Fig. 2 is the system block diagram of the one of the present utility model equal control laser power for being embodied as exemplifying.
Fig. 3 is the method flow block diagram of equal control laser power of the present utility model.
Specific embodiment
This utility model is described in further detail with reference to specific embodiment.But this should not be interpreted as this
The scope of the above-mentioned theme of utility model is only limitted to below example, and all technology that is realized based on this utility model content are belonged to
In scope of the present utility model.
Embodiment 1：
Fig. 1 is the system module block diagram of equal control laser power of the present utility model, including the motion control being sequentially connected
Device processed 1, data processor 2, CO2 laser instrument 3,
The data processor 2 be stored with set in advance switch optical parameter, collection period；
The motion controller 1 is used for the motion vector speed of the current cutting of collection after cutting starts, and by the fortune
Dynamic vector speed is sent to data processor 2；
The data processor 2 is additionally operable to, according to the motion vector speed and the collection period, obtain distance parameter；
The data processor 2 is additionally operable to according to the distance parameter and the switch optical parameter, obtains switching light number of times；
The data processor 2 is additionally operable to obtain PWM waveform according to the number of times that opens the light, and utilizes the PWM waveform control
What CO2 laser instrument 3 processed was switched cut-offs, and the CO2 laser instrument 3 is used for the luminous power that cut-offs when control is cut according to switch, its
In, the size of the PWM waveform frequency is the number of times that opens the light.
The system of equal control laser power of the present utility model can be accurately controlled the cutting power of laser tube in real time,
So that when cutting speed changes, can also reach the technological requirement of cutting workpiece ablation uniformity.
General, in a cutting process, according to the pre-designed cutting process of drawing, due to cutting in cutting process
The speed for cutting path is probably be continually changing, however, cutting speed freely cannot be controlled, therefore this utility model passes through
Frequently switch light to reach the purpose of equal control laser power, uncontrollable speed variables are converted to controllable pulse and are become
Amount, reaches the purpose of real-time control laser emitting power.
Specifically, if the time of Laser output is short enough, then laser just only can ablation or fusing on workpiece every time
One point, and countless this point continuous is formed a complete line of cut.According to this principle, it would be desirable to define one
Need to beat how many points in individual predetermined distance（Parameter N）, usually 1mm beat how many points apart from interior, and laser head motion 1mm swashs
Photoswitch light how many times.Often switch light just stays next point in surface of the work 1 time.By the current movement velocity of Real-time Collection,
Collection period is 1ms, by the present speed for gathering back conversion apart from L=V ×ΔT, hereΔT is speed acquisition cycle 1ms.
By we calculate the switch light number of times of needs apart from L, light number of times A=L × N is switched, N is the regulation for above arranging in formula
Apart from the interior number that gets ready.The switch light number of times for counting out will be converted into PWM waveform, the frequency of PWM connecing in lower 1ms by controller
Rate fpwm= A;This PWM ripple is linked into the switch interface of CO2 laser instrument, and the analog quantity interface of CO2 laser instrument often meets 5V（Maximum
Power）.When PWM waveform is high level, laser opens the light, and the laser light off when CO2 is low level, each PWM cycle laser are opened
Close once, our cutting track will be formed in one point of surface of the work ablation, countless continuous points, basis is adopted then
Speed during collection cutting, controls to get quantity ready in the next 1ms, indirectly controls watt level, reach cutting workpiece and burn
The technological requirement of erosion uniformity.
In a detailed embodiment, the collection period is 1ms.
Certainly, collection period is shorter, and control accuracy is higher, and the requirement to equipment performance is also higher, is being embodied as
In, collection period can be controlled to the required precision of workpiece according to reality.
In a detailed embodiment, the distance parameter is：
L=V×ΔT, wherein V are the motion vector speed of current cutting,ΔT is collection period set in advance.
In a detailed embodiment, the switch light number of times is：
A=L × N, wherein N are switch optical parameter set in advance.
In a detailed embodiment, the data processor is fpga chip.
In a detailed embodiment, light thermocouple is provided between the data processor 2 and the CO2 laser instrument 3
Clutch 4, the photoelectrical coupler are high speed photo coupling.Referring to Fig. 2, so, the cutting power signal that FPGA circuitry 22 sends passes through
The high speed photo coupling 4 is transferred to CO2 laser instrument 3, can thus be prevented effectively from data processor 2 by 3 instantaneous high pressure of CO2 laser instrument
The external disturbance that brings.
Fig. 3 is the method flow block diagram of equal control laser power of the present utility model, comprises the following steps：
S1, preset switch optical parameter, collection period；
After S2, cutting start, the motion vector speed of the current cutting of motion controller collection；
S3, according to the motion vector speed and the collection period, obtain distance parameter；
S4, according to the distance parameter and the switch optical parameter, obtain switch light number of times；
S5, PWM waveform is obtained according to the number of times that opens the light, opening for CO2 laser switch is controlled using the PWM waveform
Disconnected, wherein, the size of the PWM waveform frequency is the number of times that opens the light.
In a detailed embodiment, the collection period is 1ms.
In a detailed embodiment, the distance parameter is：
L=V×ΔT, wherein V are the motion vector speed of current cutting,ΔT is collection period set in advance.
In a detailed embodiment, the switch light number of times is：
A=L × N, wherein N are switch optical parameter set in advance.
Specific embodiment of the present utility model is described in detail above in conjunction with accompanying drawing, but this utility model is not
It is limited to above-mentioned embodiment, in the case of the spirit and scope without departing from claims hereof, those skilled in the art
Member can be so that various modification can be adapted or remodeling.
Claims (4)
1. a kind of system of equal control laser power, it is characterised in that including be sequentially connected motion controller, data processing
Device, CO2 laser instrument,
The data processor be stored with set in advance switch optical parameter, collection period；
The motion controller is used for the motion vector speed of the current cutting of collection after cutting starts, and by the motion vector
Speed is sent to data processor；
The data processor is additionally operable to, according to the motion vector speed and the collection period, obtain distance parameter；
The data processor is additionally operable to according to the distance parameter and the switch optical parameter, obtains switching light number of times；
The data processor is additionally operable to obtain PWM waveform according to the switch light number of times, and is controlled using the PWM waveform
CO2 laser switch cut-offs, and the CO2 laser instrument is used for luminous power when cut-offfing control cutting according to switch, wherein, institute
The size for stating PWM waveform frequency is the switch light number of times；
The data processor is fpga chip；
Photoelectrical coupler is provided between the data processor and the CO2 laser instrument.
2. the system of equal control laser power according to claim 1, it is characterised in that the collection period is 1ms.
3. the system of equal control laser power according to claim 1, it is characterised in that the distance parameter is：
L=V×ΔT, wherein V are the motion vector speed of current cutting,ΔT is collection period set in advance.
4. the system of equal control laser power according to claim 3, it is characterised in that the switch light number of times is：
A=L × N, wherein N are switch optical parameter set in advance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620773839.3U CN206010148U (en) | 2016-07-21 | 2016-07-21 | A kind of system of equal control laser power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620773839.3U CN206010148U (en) | 2016-07-21 | 2016-07-21 | A kind of system of equal control laser power |
Publications (1)
| Publication Number | Publication Date |
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| CN206010148U true CN206010148U (en) | 2017-03-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620773839.3U Withdrawn - After Issue CN206010148U (en) | 2016-07-21 | 2016-07-21 | A kind of system of equal control laser power |
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| Country | Link |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105965155A (en) * | 2016-07-21 | 2016-09-28 | 成都福誉科技有限公司 | Method and system for uniformly controlling laser power |
| CN108941886A (en) * | 2017-05-22 | 2018-12-07 | 恩耐公司 | Fine scale time control to Materialbearbeitung mit Laserlicht |
| US11179807B2 (en) | 2015-11-23 | 2021-11-23 | Nlight, Inc. | Fine-scale temporal control for laser material processing |
| US11331756B2 (en) | 2015-11-23 | 2022-05-17 | Nlight, Inc. | Fine-scale temporal control for laser material processing |
| US11465232B2 (en) | 2014-06-05 | 2022-10-11 | Nlight, Inc. | Laser patterning skew correction |
| US11886052B2 (en) | 2016-09-29 | 2024-01-30 | Nlight, Inc | Adjustable beam characteristics |
-
2016
- 2016-07-21 CN CN201620773839.3U patent/CN206010148U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11465232B2 (en) | 2014-06-05 | 2022-10-11 | Nlight, Inc. | Laser patterning skew correction |
| US11179807B2 (en) | 2015-11-23 | 2021-11-23 | Nlight, Inc. | Fine-scale temporal control for laser material processing |
| US11331756B2 (en) | 2015-11-23 | 2022-05-17 | Nlight, Inc. | Fine-scale temporal control for laser material processing |
| US11794282B2 (en) | 2015-11-23 | 2023-10-24 | Nlight, Inc. | Fine-scale temporal control for laser material processing |
| CN105965155A (en) * | 2016-07-21 | 2016-09-28 | 成都福誉科技有限公司 | Method and system for uniformly controlling laser power |
| US11886052B2 (en) | 2016-09-29 | 2024-01-30 | Nlight, Inc | Adjustable beam characteristics |
| CN108941886A (en) * | 2017-05-22 | 2018-12-07 | 恩耐公司 | Fine scale time control to Materialbearbeitung mit Laserlicht |
| CN108941886B (en) * | 2017-05-22 | 2022-10-14 | 恩耐公司 | Precision-scaled time control for laser material processing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170315 Effective date of abandoning: 20180102 |