CN110052722A - A kind of laser pulse control method and device - Google Patents
A kind of laser pulse control method and device Download PDFInfo
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- CN110052722A CN110052722A CN201910294347.4A CN201910294347A CN110052722A CN 110052722 A CN110052722 A CN 110052722A CN 201910294347 A CN201910294347 A CN 201910294347A CN 110052722 A CN110052722 A CN 110052722A
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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
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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
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
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Abstract
The present invention provides a kind of laser pulse control method and device, method comprises determining that present laser pulse point；Obtain the X-axis displacement signal and Y-axis displacement signal between operating position and the present laser pulse point；Signal processing is carried out to X-axis displacement signal and Y-axis displacement signal respectively, obtains X-axis displacement data and Y-axis displacement data；According to X-axis displacement data and Y-axis displacement data, judge whether the distance between operating position and the present laser pulse point reach default spacing；If reaching default spacing, triggering laser generates laser pulse.Using the embodiment of the present invention, realizes laser pulse and be uniformly distributed on cutting track.
Description
Technical field
The present invention relates to laser cutting technique field more particularly to a kind of laser pulse control method and device.
Background technique
In laser cutting process, usually workpiece to be cut is put on the table, under the control of digital control system
Motion laser head or workbench, and laser pulse vertical incidence workpiece planarization is controlled, achieve the purpose that cut workpiece.
Existing laser pulse control method is usually to issue laser pulse every same time, since workbench has one
Fixed inertia can have a large amount of acceleration and deceleration motion when doing curvilinear motion, for example, as shown in Figure 1, being easy to make laser at each section
The energy or umber of pulse of fixed length track are different, and laser pulse is caused to be unevenly distributed on cutting track, therefore processing quality is logical
Often it is difficult to meet the requirements.
Therefore, it is necessary to a kind of new laser pulse control method is designed, to overcome the above problem.
Summary of the invention
It is an object of the invention to overcome the defect of the prior art, a kind of laser pulse control method and device are provided,
To realize that laser pulse is uniformly distributed on cutting track.
The present invention is implemented as follows:
In a first aspect, the present invention provides a kind of laser pulse control method, which comprises
Determine present laser pulse point；
Obtain the X-axis displacement signal and Y-axis displacement signal between operating position and the present laser pulse point；To X
Axle position shifting signal and Y-axis displacement signal carry out signal processing respectively, obtain X-axis displacement data and Y-axis displacement data；
According to X-axis displacement data and Y-axis displacement data, judge between operating position and the present laser pulse point
Whether distance reaches default spacing；
If reaching default spacing, triggering laser generates laser pulse.
Optionally, signal processing is carried out to X-axis displacement signal and Y-axis displacement signal respectively, obtains X-axis displacement data and Y
Axial displacement data, comprising:
Level translation is carried out to X-axis displacement signal and Y-axis displacement signal respectively, obtains X-axis level translation signal and Y-axis electricity
Flat transformation signal；
Digital filtering processing is carried out respectively to X-axis level translation signal and Y-axis level translation signal, and to digital filtering at
The Y-axis level translation signal after X-axis level translation signal and number filtering processing after reason carries out process of frequency multiplication respectively, obtains X
Axial displacement data and Y-axis displacement data.
Optionally, according to X-axis displacement data and Y-axis displacement data, judge operating position and the present laser pulse
Whether the distance between point reaches default spacing, comprising:
X-axis displacement data and Y-axis displacement data are substituted into Pythagorean theorem formula, operating position is calculated and currently swashs with described
The distance between light pulse point；If calculating resulting distance reaches default spacing, operating position and the present laser are determined
The distance between pulse point reaches default spacing；Otherwise, it is determined that between operating position and the present laser pulse point away from
From not up to default spacing；
Alternatively,
Calculate the quadratic sum of X-axis displacement data and Y-axis displacement data；Judge to calculate whether resulting quadratic sum reaches default
Square of spacing；If calculating square that resulting quadratic sum reaches default spacing, operating position and the present laser are determined
The distance between pulse point reaches default spacing；Otherwise, it is determined that between operating position and the present laser pulse point away from
From not up to default spacing.
Optionally, the quadratic sum of X-axis displacement data and Y-axis displacement data is calculated using hardware multiplier.
Optionally, if not up to default spacing, the method also includes:
The X between operating position and the present laser pulse point after movable workbench, after regaining movement
Axial displacement data and Y-axis displacement data；And execute and signal processing is carried out respectively to X-axis displacement signal and Y-axis displacement signal, it obtains
X-axis displacement data and Y-axis displacement data.
Optionally, after triggering laser generates laser pulse, the method also includes:
Cutting position of the generated laser pulse on workpiece is updated to present laser pulse point；Re-execute acquisition
X-axis displacement data and Y-axis displacement data between workbench and the present laser pulse point.
Optionally, the method also includes:
After detecting test instruction, test signal is issued；The test signal generates laser arteries and veins for triggering laser
Punching；
If detecting laser pulse, judge whether detected laser pulse meets predetermined pulse condition；
If meeting predetermined pulse condition, determine that the laser is normal；If not predetermined pulse condition, the laser is determined
It is abnormal.
Optionally, if laser pulse is not detected, the method also includes:
Determine that the laser is abnormal.
Second aspect, the present invention provide a kind of laser pulse control device, and described device includes:
First determining module, for determining present laser pulse point；
Module is obtained, for obtaining X-axis displacement signal and Y-axis between operating position and the present laser pulse point
Displacement signal；Signal processing is carried out to X-axis displacement signal and Y-axis displacement signal respectively, obtains X-axis displacement data and Y-axis displacement
Data；
Judgment module, for judging that operating position currently swashs with described according to X-axis displacement data and Y-axis displacement data
Whether the distance between light pulse point reaches default spacing；
Trigger module, for when the judgment result of the judgment module is yes, triggering laser to generate laser pulse.
Optionally, the acquisition module carries out signal processing to X-axis displacement signal and Y-axis displacement signal respectively, obtains X-axis
Displacement data and Y-axis displacement data, specifically:
Level translation is carried out to X-axis displacement signal and Y-axis displacement signal respectively, obtains X-axis level translation signal and Y-axis electricity
Flat transformation signal；
Digital filtering processing is carried out respectively to X-axis level translation signal and Y-axis level translation signal, and to digital filtering at
The Y-axis level translation signal after X-axis level translation signal and number filtering processing after reason carries out process of frequency multiplication respectively, obtains X
Axial displacement data and Y-axis displacement data.
The invention has the following advantages: using the embodiment of the present invention, in operating position and present laser pulse point
The distance between reach default spacing after, can trigger laser generate laser pulse, therefore, between the time for issuing laser pulse
Every only with the distance dependent of movable workbench, how the speed of service of canal table does not change, on the cutting track on workpiece
Linear distance between any two laser pulse spot is all identical, realizes laser pulse and is uniformly distributed on cutting track, from
And improve work piece cut quality.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the cutting track schematic diagram of the prior art；
Fig. 2 is a kind of flow diagram of laser pulse control method provided in an embodiment of the present invention；
Fig. 3 is a kind of cutting track schematic diagram provided in an embodiment of the present invention；
Fig. 4 is a kind of signal flow graph of laser pulse control method provided in an embodiment of the present invention；
Fig. 5 is a kind of structural schematic diagram of laser pulse control device provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
It should be noted that laser pulse control method provided by the present invention can be applied to electronic equipment, wherein
In concrete application, which can be computer, PC, plate, mobile phone etc., this is all reasonable.Preferably,
In order to improve the control efficiency of laser pulse, electronic equipment may be CPLD (Complex Programmable Logic
Device, Complex Programmable Logic Devices), FPGA (Field-Programmable Gate Array, field-programmable gate array
Column) etc. have the hardware circuit of parallel processing capability.
Referring to fig. 2, the embodiment of the present invention provides a kind of laser pulse control method, and method includes the following steps:
S101, present laser pulse point is determined；
Can be after electronic equipment bring into operation, the laser pulse cutting position detected for the first time on workpiece is determined as
Present laser pulse point；Alternatively, the last one laser pulse cutting position of workpiece can also be determined as present laser pulse
Point.Workpiece is located on workbench, and workpiece is moved with the movement of workbench, with the shifting of laser pulse and workpiece relative position
It is dynamic, finally make to form each joint-cutting on workpiece, to achieve the purpose that cutting.
X-axis displacement signal and Y-axis displacement between S102, acquisition operating position and the present laser pulse point are believed
Number；Signal processing is carried out to X-axis displacement signal and Y-axis displacement signal respectively, obtains X-axis displacement data and Y-axis displacement data；
Workbench can be equipped with grating scale or encoder, and then can obtain operating position by grating scale or encoder
It, can be quickly by grating scale or encoder with the X-axis displacement signal and Y-axis displacement signal between the present laser pulse point
Acquisition displacement signal, and displacement signal obtained distortion is minimum.And the resolution ratio of grating scale or encoder is higher, position
The error of shifting signal is also smaller.
The displacement signal that grating scale or encoder provide can be the mutually orthogonal differential signal of two-way, differentiate to improve
Rate can carry out two frequencys multiplication to this signal or quadruple is handled.In addition, since there are many mixed and disorderly signal of industry spot, in order to
Interference signal is eliminated, digital filtering processing can also be carried out to displacement signal.Therefore, specifically, to X-axis displacement signal and Y-axis
Displacement signal carries out signal processing respectively, obtains X-axis displacement data and Y-axis displacement data, may include:
Level translation is carried out to X-axis displacement signal and Y-axis displacement signal respectively, obtains X-axis level translation signal and Y-axis electricity
Flat transformation signal；
Digital filtering processing is carried out respectively to X-axis level translation signal and Y-axis level translation signal, and to digital filtering at
The Y-axis level translation signal after X-axis level translation signal and number filtering processing after reason carries out process of frequency multiplication respectively, obtains X
Axial displacement data and Y-axis displacement data.
Level translation can be realized by level-conversion circuit, X-axis level translation signal can be unified by level translation
With the output level of Y-axis level translation signal.Process of frequency multiplication can be realized by frequency multiplier, number is realized by digital filter circuit
Word filtering processing, by the mutual cooperation of each hardware circuit unit, can be further improved signal processing efficiency.
Alternatively, carrying out signal processing respectively in other implementations to X-axis displacement signal and Y-axis displacement signal, obtaining
X-axis displacement data and Y-axis displacement data can only include level translation and number filtering processing；Alternatively, number can also be only included
Word filtering processing and process of frequency multiplication etc..
S103, according to X-axis displacement data and Y-axis displacement data, judge operating position and the present laser pulse point
The distance between whether reach default spacing；If reaching default spacing, S104 is executed.
S104, triggering laser generate laser pulse.
In a kind of implementation, according to X-axis displacement data and Y-axis displacement data, operating position and described current is judged
Whether the distance between laser pulse spot reaches default spacing, comprising:
X-axis displacement data and Y-axis displacement data are substituted into Pythagorean theorem formula, operating position is calculated and currently swashs with described
The distance between light pulse point；If calculating resulting distance reaches default spacing, operating position and the present laser are determined
The distance between pulse point reaches default spacing；Otherwise, it is determined that between operating position and the present laser pulse point away from
From not up to default spacing.
Pythagorean theorem formula can beWherein, Δ Xn indicates X
Axial displacement data, Δ Yn indicate Y-axis displacement data.Default spacing can be expressed as C, and default spacing is for indicating preset adjacent
Spacing between laser pulse spot, if D be equal to C, it is possible to determine that between operating position and the present laser pulse point away from
From reaching default spacing；Otherwise between determining that the distance between operating position and the present laser pulse point are not up to preset
Away from.
Alternatively, calculating complexity in another implementation in order to avoid the square root of Pythagorean theorem formula calculates bring
Property, computational efficiency, which is improved, according to X-axis displacement data and Y-axis displacement data judges operating position and the present laser pulse
Whether the distance between point reaches default spacing, may include:
Calculate the quadratic sum of X-axis displacement data and Y-axis displacement data；Judge to calculate whether resulting quadratic sum reaches default
Square of spacing；If calculating square that resulting quadratic sum reaches default spacing, operating position and the present laser are determined
The distance between pulse point reaches default spacing；Otherwise, it is determined that between operating position and the present laser pulse point away from
From not up to default spacing.
Quadratic sum (E=Δ Xn* Δ Xn+ Δ Yn* Δ Yn) is carried out to two-way displacement data to calculate.Default spacing square can
To be expressed as C*C.C can be previously set according to demand.
Using the embodiment of the present invention, between reaching default at a distance from operating position is between the present laser pulse point
Away from rear, laser can be triggered and generate laser pulse, therefore, issue the time interval of laser pulse only with movable workbench away from
From related, how the speed of service of canal table does not change, on the cutting track on workpiece any two laser pulse spot it
Between linear distance it is all identical, realize laser pulse and be uniformly distributed on cutting track, to improve work piece cut quality.
And since whole process can enough be realized by hardware circuit, the acquisition speed of X-axis displacement signal and Y-axis displacement signal is fast, counts
It is fast to calculate speed, therefore, the treatment effeciency of whole process is high, postpones small.
In order to further increase computational efficiency, in a kind of implementation, CPLD establishment hardware multiplier can be used and calculate
Quadratic sum, so as to so that the delay time that point position is issued to laser pulse from movable workbench to pulse control in 1 microsecond
Within, realizing makes cutting speed reach tens millimeter magnitude per second.
In one implementation, after triggering laser generates laser pulse, method can also include:
Cutting position of the generated laser pulse on workpiece is updated to present laser pulse point；Re-execute acquisition
X-axis displacement signal and Y-axis displacement signal between operating position and the present laser pulse point.
After laser generates laser pulse, cutting position of the generated laser pulse on workpiece can be updated to
Present laser pulse point, since workbench can continue to move to, displacement signal can also change, therefore can monitor position again
Shifting signal, judges whether the distance between workbench and the present laser pulse point reach default spacing, to realize to work
The determination of the next cutting position of part, and trigger the next laser pulse of laser generation and cut.
In another implementation, if not up to default spacing, the method also includes:
The X between operating position and the present laser pulse point after movable workbench, after regaining movement
Axle position shifting signal and Y-axis displacement signal, and execute and signal processing is carried out respectively to X-axis displacement signal and Y-axis displacement signal, it obtains
X-axis displacement data and Y-axis displacement data.
If not up to default spacing, shows that the distance between operating position and preceding laser pulse spot do not meet default spacing
It is required that then workbench can continue to move to, for laser without generating laser pulse, electronic equipment can continue monitoring platform
Displacement signal, until the distance between workbench and present laser pulse point meet default pitch requirements, to trigger laser
Generate laser pulse.
Below with reference to Fig. 3, the present invention will be described.
Illustratively, as shown in figure 3, C indicates the distance between preset two neighboring laser pulse spot, this distance
The length of string between two adjacent laser pulse points as on cutting curve track, apart from it is sufficiently small when approximating curve.Figure
In (Xn, Yn), (Xn+1, Yn+1) and (Xn+2, Yn+2) respectively indicate continuous 3 laser pulse spots n, n+1 and n+2 in workbench
On coordinate, Δ Xn indicate nth point with (n+1)th point at a distance from X-direction, Δ Yn indicates nth point and in the Y direction at (n+1)th point
Distance, (n+1)th point of Δ Xn+1 expression is with the n-th+2 point at a distance from X-direction, and (n+1)th point of Δ Yn+1 expression is with the n-th+2 point in the side Y
To distance.
After laser pulse spot n appearance, with the movement of workbench, workpiece is also constantly being moved, until being moved to laser
Pulse point n+1, it can issue next laser pulse.During movable workbench, Δ Xn is can be monitored in real time in electronic equipment
With Δ Yn, and the quadratic sum of Δ Xn and Δ Yn are calculated, wherein Δ Xn=Xn+1-Xn, Δ Yn=Yn+1-Yn, (Xn+1, Yn+1)
The position that should occur for next laser pulse.In movable workbench, Δ Xn and Δ Yn moment are changing, when Δ Xn* Δ
When Xn+ Δ Yn* Δ Yn=C*C, meet preset required distance, issues laser pulse, while real-time monitoring laser pulse spot n
The position that+1 next laser pulse should occur, that is, (Δ Xn+1* Δ Xn+1)+(Δ Yn+1* Δ Yn+1) is calculated, and
Compare whether (Δ Xn+1* Δ Xn+1)+(Δ Yn+1* Δ Yn+1) reaches C*C, so circulation is gone down, until completing swashing for workpiece
Light cutting.
In a kind of implementation, in order in the case where workbench does not move also can debugging laser pulse, the method
Can also include:
After detecting test instruction, test signal is issued；The test signal generates laser arteries and veins for triggering laser
Punching；
If detecting laser pulse, judge whether detected laser pulse meets predetermined pulse condition；
If meeting predetermined pulse condition, determine that the laser is normal；If not predetermined pulse condition, the laser is determined
It is abnormal.
Electronic equipment may include selection logic unit, selects logic unit that can provide start button, opens when detecting
After dynamic button is pressed, test instruction can be confirmly detected；Alternatively, electronic equipment can provide human-computer interaction interface, it is man-machine
Interactive interface can provide testing button control, after detecting that testing button control is clicked, can confirmly detect test
Instruction.
Electronic equipment can issue test signal after detecting test instruction, and test signal can be a kind of pulse letter
Number, this pulse signal can trigger laser generation laser pulse can be into one if laser successfully issues laser pulse
Step judges whether the laser pulse meets predetermined pulse condition, and predetermined pulse condition can be previously set according to demand, for example,
It may include that pulse shape, duty ratio isopulse index parameter if laser pulse meets predetermined pulse condition may indicate that laser
Device is in normal operating conditions；If laser pulse does not meet predetermined pulse condition, it may indicate that laser is not in normal work
State.
In another implementation, if laser pulse is not detected, the method can also include:
Determine that the laser is abnormal.
Using the embodiment of the present invention, even if workbench does not move, whether normal laser also can detecte out.Therefore it can be with
In the case where laser pulse does not normally get to workpiece, investigation is that workbench exception or laser are abnormal, is guaranteed respectively with realizing
Equipment works normally.
In a kind of implementation, concrete signal flow chart can be as shown in figure 4, X-axis displacement signal and Y-axis to workbench
After displacement signal carries out level translation, digital filtering processing, quadruple processing respectively, then quadratic sum is carried out to two-way displacement data
(X*X+Y*Y) it calculates.Spacing C between adjacent laser pulse point gives the next electronics by serial ports (RS232) by main control computer
The processor of equipment calculates C*C by the arithmetic element of electronic equipment.With the movement of workbench, the displacement square of X-axis and Y-axis
(X*X+Y*Y) will be continuously increased, and when (X*X+Y*Y) is equal to C*C, electronic equipment can issue trigger signal to laser,
A laser pulse is generated to trigger laser, while cutting position of the generated laser pulse on workpiece being updated to
Present laser pulse point, monitors displacement data again, whether judges the distance between workbench and the present laser pulse point
Reach default spacing, to realize the determination to the next cutting position of workpiece, and triggers laser and generate next laser arteries and veins
Rush in capable cutting；In addition, can issue test signal after detecting that selection logic unit is activated, be with testing laser device
It is no normal.
Corresponding with above-mentioned embodiment of the method, the embodiment of the present invention also provides a kind of laser pulse control device.
Referring to Fig. 5, Fig. 5 is a kind of structural schematic diagram of laser pulse control device provided by the embodiment of the present invention, institute
Stating device includes:
First determining module 201, for determining present laser pulse point；
Obtain module 202, for obtain X-axis displacement signal between operating position and the present laser pulse point and
Y-axis displacement signal；Signal processing is carried out to X-axis displacement signal and Y-axis displacement signal respectively, obtains X-axis displacement data and Y-axis position
Move data；
Judgment module 203, for according to X-axis displacement data and Y-axis displacement data, judging operating position and described current
Whether the distance between laser pulse spot reaches default spacing；
Trigger module 204, for when the judgment result of the judgment module is yes, triggering laser to generate laser arteries and veins
Punching.
Using the embodiment of the present invention, reach default spacing at a distance from workbench is between the present laser pulse point
Afterwards, laser can be triggered and generate laser pulse, therefore, issue the time interval of laser pulse at a distance from movable workbench
Related, how the speed of service of canal table does not change, on the cutting track on workpiece between any two laser pulse spot
Linear distance it is all identical, realize laser pulse and be uniformly distributed on cutting track, to improve work piece cut quality.
Optionally, the acquisition module carries out signal processing to X-axis displacement signal and Y-axis displacement signal respectively, obtains X-axis
Displacement data and Y-axis displacement data, specifically:
Level translation is carried out to X-axis displacement signal and Y-axis displacement signal respectively, obtains X-axis level translation signal and Y-axis electricity
Flat transformation signal；
Digital filtering processing is carried out respectively to X-axis level translation signal and Y-axis level translation signal, and to digital filtering at
The Y-axis level translation signal after X-axis level translation signal and number filtering processing after reason carries out process of frequency multiplication respectively, obtains X
Axial displacement data and Y-axis displacement data.
Optionally, the judgment module is according to X-axis displacement data and Y-axis displacement data, judge operating position with it is described
Whether the distance between present laser pulse point reaches default spacing, specifically:
X-axis displacement data and Y-axis displacement data are substituted into Pythagorean theorem formula, operating position is calculated and currently swashs with described
The distance between light pulse point；If calculating resulting distance reaches default spacing, operating position and the present laser are determined
The distance between pulse point reaches default spacing；Otherwise, it is determined that between operating position and the present laser pulse point away from
From not up to default spacing；
Alternatively,
Calculate the quadratic sum of X-axis displacement data and Y-axis displacement data；Judge to calculate whether resulting quadratic sum reaches default
Square of spacing；If calculating square that resulting quadratic sum reaches default spacing, operating position and the present laser are determined
The distance between pulse point reaches default spacing；Otherwise, it is determined that between operating position and the present laser pulse point away from
From not up to default spacing.
Optionally, the judgment module calculates square of X-axis displacement data and Y-axis displacement data using hardware multiplier
With.
Optionally, described device further includes the first update module, is used for:
Workbench when the judging result of the judgment module is no, after movable workbench, after regaining movement
X-axis displacement signal and Y-axis displacement signal between position and the present laser pulse point；And it executes to X-axis displacement signal and Y
Axle position shifting signal carries out signal processing respectively, obtains X-axis displacement data and Y-axis displacement data.
Optionally, described device further includes the second update module, is used for:
After triggering laser generates laser pulse, cutting position of the generated laser pulse on workpiece is updated
For present laser pulse point；Re-execute the X-axis displacement signal obtained between operating position and the present laser pulse point
With Y-axis displacement signal.
Optionally, described device further includes test module, is used for:
After detecting test instruction, test signal is issued；The test signal generates laser arteries and veins for triggering laser
Punching；
If detecting laser pulse, judge whether detected laser pulse meets predetermined pulse condition；
If meeting predetermined pulse condition, determine that the laser is normal；If not predetermined pulse condition, the laser is determined
It is abnormal.
Optionally, described device further includes the second determining module, is used for:
After laser pulse is not detected in the test module, determine that the laser is abnormal.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of laser pulse control method, which is characterized in that the described method includes:
Determine present laser pulse point；
Obtain the X-axis displacement signal and Y-axis displacement signal between operating position and the present laser pulse point；To X-axis position
Shifting signal and Y-axis displacement signal carry out signal processing respectively, obtain X-axis displacement data and Y-axis displacement data；
According to X-axis displacement data and Y-axis displacement data, the distance between operating position and the present laser pulse point are judged
Whether default spacing is reached；
If reaching default spacing, triggering laser generates laser pulse.
2. the method according to claim 1, wherein carrying out letter respectively to X-axis displacement signal and Y-axis displacement signal
Number processing, obtain X-axis displacement data and Y-axis displacement data, comprising:
Level translation is carried out to X-axis displacement signal and Y-axis displacement signal respectively, X-axis level translation signal is obtained and Y-axis level becomes
Change signal；
Digital filtering processing carried out respectively to X-axis level translation signal and Y-axis level translation signal, and to number filtering processing after
X-axis level translation signal and number filtering processing after Y-axis level translation signal carry out process of frequency multiplication respectively, obtain X-axis position
Move data and Y-axis displacement data.
3. the method according to claim 1, wherein judging work according to X-axis displacement data and Y-axis displacement data
Make whether the distance between platform position and the present laser pulse point reach default spacing, comprising:
X-axis displacement data and Y-axis displacement data are substituted into Pythagorean theorem formula, calculate operating position and the present laser arteries and veins
The distance between punching point；If calculating resulting distance reaches default spacing, operating position and the present laser pulse are determined
The distance between point reaches default spacing；Otherwise, it is determined that the distance between operating position and the present laser pulse point are not
Reach default spacing；
Alternatively,
Calculate the quadratic sum of X-axis displacement data and Y-axis displacement data；Judge to calculate whether resulting quadratic sum reaches default spacing
Square；If calculating square that resulting quadratic sum reaches default spacing, operating position and the present laser pulse are determined
The distance between point reaches default spacing；Otherwise, it is determined that the distance between operating position and the present laser pulse point are not
Reach default spacing.
4. according to the method described in claim 3, it is characterized in that, calculating X-axis displacement data and Y-axis position using hardware multiplier
Move the quadratic sum of data.
5. the method according to claim 1, wherein if not up to default spacing, the method also includes:
The X-axis position between operating position and the present laser pulse point after movable workbench, after regaining movement
Shifting signal and Y-axis displacement signal；And execute and signal processing is carried out respectively to X-axis displacement signal and Y-axis displacement signal, obtain X-axis
Displacement data and Y-axis displacement data.
6. the method according to claim 1, wherein triggering laser generate laser pulse after, the side
Method further include:
Cutting position of the generated laser pulse on workpiece is updated to present laser pulse point；Re-execute acquisition work
X-axis displacement signal and Y-axis displacement signal between platform position and the present laser pulse point.
7. the method according to claim 1, wherein the method also includes:
After detecting test instruction, test signal is issued；The test signal generates laser pulse for triggering laser；
If detecting laser pulse, judge whether detected laser pulse meets predetermined pulse condition；
If meeting predetermined pulse condition, determine that the laser is normal；If not predetermined pulse condition, determine that the laser is different
Often.
8. the method according to the description of claim 7 is characterized in that if laser pulse is not detected, the method also includes:
Determine that the laser is abnormal.
9. a kind of laser pulse control device, which is characterized in that described device includes:
First determining module, for determining present laser pulse point；
Module is obtained, for obtaining X-axis displacement signal and Y-axis displacement between operating position and the present laser pulse point
Signal；Signal processing is carried out to X-axis displacement signal and Y-axis displacement signal respectively, obtains X-axis displacement data and Y-axis displacement data；
Judgment module, for judging operating position and the present laser arteries and veins according to X-axis displacement data and Y-axis displacement data
Whether the distance between punching point reaches default spacing；
Trigger module, for when the judgment result of the judgment module is yes, triggering laser to generate laser pulse.
10. device according to claim 9, which is characterized in that the acquisition module is displaced X-axis displacement signal and Y-axis
Signal carries out signal processing respectively, obtains X-axis displacement data and Y-axis displacement data, specifically:
Level translation is carried out to X-axis displacement signal and Y-axis displacement signal respectively, X-axis level translation signal is obtained and Y-axis level becomes
Change signal；
Digital filtering processing carried out respectively to X-axis level translation signal and Y-axis level translation signal, and to number filtering processing after
X-axis level translation signal and number filtering processing after Y-axis level translation signal carry out process of frequency multiplication respectively, obtain X-axis position
Move data and Y-axis displacement data.
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Application publication date: 20190726 |