CN104360642B - A kind of laser cutting machine digital control system - Google Patents
A kind of laser cutting machine digital control system Download PDFInfo
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- CN104360642B CN104360642B CN201410653074.5A CN201410653074A CN104360642B CN 104360642 B CN104360642 B CN 104360642B CN 201410653074 A CN201410653074 A CN 201410653074A CN 104360642 B CN104360642 B CN 104360642B
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- 238000003698 laser cutting Methods 0.000 title claims abstract description 33
- 238000005520 cutting process Methods 0.000 claims abstract description 34
- 238000006243 chemical reaction Methods 0.000 claims description 28
- 238000001914 filtration Methods 0.000 claims description 17
- 238000002955 isolation Methods 0.000 claims description 8
- 230000003321 amplification Effects 0.000 claims description 7
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 230000002159 abnormal effect Effects 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000004088 simulation Methods 0.000 claims description 3
- 239000004519 grease Substances 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 17
- 230000002093 peripheral effect Effects 0.000 description 6
- 102220493943 26S proteasome complex subunit SEM1_U13C_mutation Human genes 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/414—Structure of the control system, e.g. common controller or multiprocessor systems, interface to servo, programmable interface controller
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/45—Nc applications
- G05B2219/45041—Laser cutting
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- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Laser Beam Processing (AREA)
Abstract
The present invention relates to automated control technology, and more particularly, to a kind of laser cutting machine digital control system, it includes standard numerical control console module, to control the basic exercise of the lathe of laser cutting machine；Laser power control module matched with the standard numerical control console module and cutting head height control module, wherein, the laser power control module is used to be controlled the energy of the laser of laser cutting machine, the cutting head height control module is used to be controlled the height of the cutting head of laser cutting machine, to ensure that the focus of laser is in suitable position all the time.The present invention can organically combine the operation control of lathe and laser power control and cutting grease head highness control.
Description
Technical field
The present invention relates to automated control technology, more particularly to a kind of control system of laser cutting machine.
Background technology
Laser cutting machine is to be irradiated to workpiece surface by laser beam, release energy melt workpiece and evaporate so as to fulfill
A kind of Novel numerical control machine of cutting.Since the control system of common numerically-controlled machine tool is not related to the control institute of laser cutting machine
The complicated control logics such as necessary laser power control, cutting grease head highness control, therefore existing digital control system can not meet
The control requirement of laser cutting machine.
The content of the invention
The technical problem to be solved in the present invention is, for the drawbacks described above of the prior art, there is provided a kind of laser cutting machine
Digital control system, can organically combine the operation control of lathe and laser power control and cutting grease head highness control.
The technical solution adopted by the present invention to solve the technical problems is：A kind of laser cutting machine digital control system is provided, its
Including standard numerical control console module, to control the basic exercise of the lathe of laser cutting machine；It is further included and the criterion numeral
The matched laser power control module of console module and cutting head height control module are controlled, wherein, the laser power control
Module is used to be controlled the energy of the laser of laser cutting machine, and the cutting head height control module is used to cut laser
The height of the cutting head of cutting mill is controlled, to ensure that the focus of laser is in suitable position all the time.
The present invention still more preferably scheme be：The laser power control module includes analog voltage output unit,
To carry out laser energy attenuation by analog voltage；Pwm pulse output unit, to carry out laser energy by pwm pulse
Control.
The present invention still more preferably scheme be：The laser power control module further includes performance number and impulse form
Setup unit, the PWM arteries and veins is given to provide first setting signal to the analog voltage output unit and the second setting signal of offer
Rush output unit.
The present invention still more preferably scheme be：The performance number includes with impulse form setup unit：Scene can compile
Journey gate array, to provide the first setting signal；Microprocessor, to provide second setting signal.
The present invention still more preferably scheme be：The first setting signal is digital signal；The analog voltage is defeated
Going out unit includes：Digital-to-analogue conversion subunit, the first setting signal is converted to analog signal；With the digital-to-analogue conversion
The amplification and filtering subunit that subelement is connected, the analog signal to be provided to the digital-to-analogue conversion subunit be amplified and
Exported after filtering process to laser.
The present invention still more preferably scheme be：The analog voltage output unit further includes：With the digital-to-analogue conversion
The monitoring subelement that subelement is connected, the analog signal to be provided to the digital-to-analogue conversion subunit are monitored, to prevent
Abnormal output.
The present invention still more preferably scheme be：Second setting signal is pulse signal；The pwm pulse output
Unit includes：Isolate subelement, to carry out light-coupled isolation processing to second setting signal；It is connected with the subelement of isolating
Filtering subunit, to export to laser after being filtered processing to the pulse signal that provides of isolation subelement.
The present invention still more preferably scheme be：The pwm pulse output unit further includes：With the filtering subunit
Connected pulse voltage amplitude selection subelement, to select to determine amplitude of the output to the pulse voltage of laser.
The present invention still more preferably scheme be：The cutting head height control module includes range sensor, height
Control unit and axis driving unit, the altitude signal and setting that the height control unit is provided according to the range sensor
Calibrated altitude between difference, provide control signal to the axis driving unit to control the fortune of the axis of the laser cutting machine
It is dynamic.
The present invention still more preferably scheme be：The height control unit includes difference processing subelement, to right
The analog signal and carried out with the corresponding setting value of calibrated altitude of setting at difference and amplification that the range sensor provides
Reason provides；The digital-to-analogue conversion subunit being connected with the difference processing subelement, to be provided to the difference processing subelement
Analog signal carry out analog-to-digital conversion, export digitized control signal to the axis driving unit.
The beneficial effects of the present invention are can be by the operation control of lathe and laser power control and cutting grease head highness control
System organically combines.
Brief description of the drawings
Below in conjunction with accompanying drawings and embodiments, the invention will be further described, in attached drawing：
Fig. 1 is the structure diagram of laser cutting machine digital control system embodiment of the present invention.
Fig. 2 is the structure diagram of Plays digital control platform module of the present invention.
Fig. 3 is the structure diagram of laser power control module in the present invention.
Fig. 4 is the structure diagram of cutting head height control module in the present invention.
Fig. 5 is digital-to-analogue conversion subunit and amplification and the electric principle of filtering subunit in analog voltage output unit of the present invention
Figure.
Fig. 6 is the electrical schematic diagram that subelement is monitored in analog voltage output unit of the present invention.
Fig. 7 is the electrical schematic diagram of pwm pulse output unit of the present invention.
Fig. 8 is the electrical schematic diagram of digital-to-analogue conversion subunit in height control unit of the present invention.
Fig. 9 is the electrical schematic diagram of difference processing subelement in height control unit of the present invention.
Embodiment
In conjunction with attached drawing, elaborate to presently preferred embodiments of the present invention.
Fig. 1 is the structure diagram of laser cutting machine digital control system embodiment of the present invention.Fig. 2 is Plays of the embodiment of the present invention
The structure diagram of digital control platform module.Fig. 3 is the structure diagram of laser power control module in the embodiment of the present invention.Fig. 4 is this
The structure diagram of cutting head height control module in inventive embodiments.
As shown in Figure 1, the laser cutting machine digital control system of the present invention mainly includes：Standard numerical control console module 1, Yi Jiyu
1 matched laser power control module 2 of standard numerical control console module and cutting head height control module 3.
As shown in Fig. 2, standard numerical control console module 1 is basically identical with the structure of traditional numeric-control system, mutual cooperation is included
12 two large divisions of motion control unit 11 and machine logic control unit.Wherein, motion control unit 11 is mainly to laser
The movement of each axis of cutting machine is controlled, so as to fulfill the cutting movement of lathe.Machine logic control unit 12 is mainly
It is controlled by I/O mouthfuls of each logical blocks to lathe of digital quantity.
As shown in figure 3, the main function of laser power control module 2 is that the power of laser 9 is controlled.Laser work(
Rate control module 2 mainly includes：Performance number and impulse form setup unit 21, analog voltage output unit 22 and pwm pulse
Output unit 23.The operation principle of laser power control module 2 is about：The side being combined using analog quantity I/O and pwm pulse
Formula is controlled the power of laser 9, wherein, the setting of performance number and/or the setting of pwm pulse form can pass through power
Value is realized with impulse form setup unit 21.Analog voltage output unit 22 can export any voltage value between 0-10V,
Performance number of the laser 9 between minimum power to maximum power is corresponded to respectively, can be changed by the change of voltage swing sharp
The final output power of light device 9.Pwm pulse output unit 23 is mainly used to produce pulse laser, by varying output pulse
Duty cycle and frequency can obtain various forms of pulse lasers so that laser cutting machine in cutting process to laser work(
The control of rate is more flexible.
Performance number includes with impulse form setup unit 21：FPGA (field programmable gate array), sets to provide first
Confidence number gives analog voltage output unit 22；Microprocessor, to provide the second setting signal to pwm pulse output unit 23.
Specifically, performance number is realized by the calculating of FPGA, and it is defeated that the performance number calculated is transferred to analog voltage by FPGA
Go out unit 22, analog voltage output unit 22 carries out digital-to-analogue conversion to data and amplifies output.The form of pulse is by micro- place
Reason device calculates to realize, the pulse calculated is transferred to pwm pulse output unit 23 by microprocessor, and pwm pulse output is single
First 23 pairs of pulses export again after handling.
Analog voltage output unit 22 includes：Digital-to-analogue conversion subunit, first setting signal is converted to simulation letter
Number；The amplification being connected with digital-to-analogue conversion subunit and filtering subunit, the analog signal provided to logarithmic mode conversion subunit
It is amplified and is exported with after filtering process to laser；And the monitoring subelement being connected with digital-to-analogue conversion subunit, to right
The analog signal that digital-to-analogue conversion subunit provides is monitored, to prevent abnormal output.
Fig. 5 is digital-to-analogue conversion subunit and amplification and the electrical schematic diagram of filtering subunit in analog voltage output unit 22.
Referring to Fig. 5, digital-to-analogue conversion subunit and amplification and filtering subunit are mainly by operational amplifier U11A, U11B, U12A and U12B
And its peripheral circuit is formed, the digital signal that can provide FPGA is converted to analog signal, and is amplified and filtering process,
Obtain accurately analog voltage.
Fig. 6 is the electrical schematic diagram that subelement is monitored in analog voltage output unit 22.It is main referring to Fig. 6, monitoring subelement
It is made of operational amplifier U13A, U13B, U13C, U13D, U14A, U14B, U14C and U14D and its peripheral circuit, can be to defeated
The analog voltage gone out is monitored, and prevents abnormal output.
Pwm pulse output unit 23 includes：Isolate subelement, to carry out light-coupled isolation processing to the second setting signal；
The filtering subunit being connected with isolating subelement, the pulse signal to be provided to isolation subelement export after being filtered processing
To laser；And the pulse voltage amplitude selection subelement being connected with filtering subunit, to select to determine output to laser
The amplitude of the pulse voltage of device.
Fig. 7 is the electrical schematic diagram of pwm pulse output unit 23.Referring to Fig. 7, isolation subelement mainly by optical coupler U3 and its
Peripheral circuit is formed, and the pulse signal that can be exported to microprocessor is isolated.Filtering subunit mainly by triode Q3 and
Its peripheral circuit is formed, and processing can be filtered to the pulse signal after isolation, to improve antijamming capability.Pulse voltage width
Value selection subelement is mainly formed by switching S1, switch S1 can be switched over according to being actually needed, be carried out strobe pulse voltage
Amplitude for 24V either 5V.
As shown in figure 4, cutting head height control module 3 is mainly used to adjust the distance between cutting head and plate, ensure
The focus of laser beam is in suitable position all the time.Cutting head height control module 3 mainly includes：Range sensor 31 is high
Spend control unit 32 and axis driving unit 33.The operation principle of cutting head height control module 3 is about：Firstly, it is necessary to root
A normal place is set for cutting head according to laser beam focal, the actual range between cutting head and plate passes through Distance-sensing
Device 31 measures, and the result of measurement can be supplied to height control unit 32 in the form of analog voltage, the scope of magnitude of voltage is in 0-
It is corresponding apart from the height of plate with cutting head between 10V.Height control unit 32 is by corresponding to the physical location received
Voltage signal with set normal place corresponding to voltage signal compared with, and according to difference via axis driving unit 33 come
The movement of corresponding axis is controlled, so as to be adjusted to cutting grease head highness.
Height control unit 32 includes difference processing subelement, to the analog signal provided the range sensor 31
Difference is carried out with setting value corresponding with the calibrated altitude of setting and enhanced processing provides；With the difference processing subelement phase
Digital-to-analogue conversion subunit even, the analog signal to be provided to the difference processing subelement carry out analog-to-digital conversion, export number
The control signal of word gives the axis driving unit 33.
Fig. 9 is the electrical schematic diagram of difference processing subelement in height control unit 32.Referring to Fig. 9, difference processing subelement
Mainly be made of comparator U20A, U20B, U20C, U20D and its peripheral circuit, to by actual range with setting standard it
Between difference be converted to analog voltage signal.In the present embodiment, it is linear relationship to cut between grease head highness and analog voltage.
Fig. 8 is the electrical schematic diagram of digital-to-analogue conversion subunit in height control unit 32.Referring to Fig. 8, digital-to-analogue conversion subunit
Mainly it is made of digital analog converter U21 and its peripheral circuit, the analog voltage signal difference processing subelement to be provided turns
It is changed to digital signal and gives axis driving unit 33.
The laser cutting machine digital control system of the present invention, by by the operation control of lathe and laser power control and cutting head
Highly control organically combines, and can efficiently control laser cutting machine.Wherein, laser energy attenuation module 2 can be to laser energy
Amount is flexibly controlled, and can change the power and impulse form of the output of laser 9 as needed.Cut grease head highness control mould
Block 3 can be controlled the height of laser cutting machine cutting head, ensure that the focus of laser is in suitable position all the time.
It is noted that in other embodiments, laser power control module 2 can be controlled only with analog voltage or
Pwm pulse controls, and in other words, both analog voltage output unit 22 and pwm pulse output unit 23 only need one of them.
In cutting head height control module 3, it can also be non-linear relation to cut between grease head highness and analog voltage.
It should be appreciated that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations, to ability
For field technique personnel, it can modify to the technical solution described in above-described embodiment, or it is special to which part technology
Sign carries out equivalent substitution；And these are changed and are replaced, it should all belong to the protection domain of appended claims of the present invention.
Claims (8)
1. a kind of laser cutting machine digital control system, it includes standard numerical control console module, to control the lathe of laser cutting machine
Basic exercise；It is characterized in that, it is further included and the matched laser power control module of standard numerical control console module
With cutting head height control module, wherein, the laser power control module is used for the energy to the laser of laser cutting machine
It is controlled, the cutting head height control module is used to be controlled the height of the cutting head of laser cutting machine, to ensure
The focus of laser is in suitable position all the time；The laser power control module is combined using analog quantity and pwm pulse
Mode is controlled the power of laser, it includes analog voltage output unit, to carry out laser energy by analog voltage
Amount control, pwm pulse output unit, to carry out laser energy attenuation by pwm pulse, and performance number is set with impulse form
Unit, to provide first setting signal to the analog voltage output unit and provide the second setting signal it is defeated to the pwm pulse
Go out unit.
2. laser cutting machine digital control system according to claim 1, it is characterised in that：The performance number is set with impulse form
Order member includes：Field programmable gate array, to provide the first setting signal；Microprocessor, to provide described
Two setting signals.
3. laser cutting machine digital control system according to claim 1, it is characterised in that：The first setting signal is numeral
Signal；The analog voltage output unit includes：Digital-to-analogue conversion subunit, the first setting signal is converted to simulation
Signal；The amplification being connected with the digital-to-analogue conversion subunit and filtering subunit, to be provided to the digital-to-analogue conversion subunit
Analog signal be amplified and exported with after filtering process to laser.
4. laser cutting machine digital control system according to claim 3, it is characterised in that：The analog voltage output unit is also
Including：The monitoring subelement being connected with the digital-to-analogue conversion subunit, to the simulation provided to the digital-to-analogue conversion subunit
Signal is monitored, to prevent abnormal output.
5. laser cutting machine digital control system according to claim 1, it is characterised in that：Second setting signal is pulse
Signal；The pwm pulse output unit includes：Isolate subelement, to carry out light-coupled isolation processing to second setting signal；
With the filtering subunit isolated subelement and be connected, the pulse signal to be provided to the isolation subelement is filtered place
Exported after reason to laser.
6. laser cutting machine digital control system according to claim 5, it is characterised in that：The pwm pulse output unit is also
Including：The pulse voltage amplitude selection subelement being connected with the filtering subunit, to select to determine output to laser
The amplitude of pulse voltage.
7. laser cutting machine digital control system according to claim 1, it is characterised in that：The cutting head height control module
Including range sensor, height control unit and axis driving unit, the height control unit is according to the range sensor
Difference between the altitude signal of offer and the calibrated altitude of setting, control signal is provided to control to the axis driving unit
State the movement of the axis of laser cutting machine.
8. laser cutting machine digital control system according to claim 7, it is characterised in that：It is poor that the height control unit includes
Manage subelement, the corresponding setting of calibrated altitude to the analog signal provided the range sensor and with setting in office
Value carries out difference and enhanced processing provides；The digital-to-analogue conversion subunit being connected with the difference processing subelement, to described
The analog signal that difference processing subelement provides carries out analog-to-digital conversion, and it is single to axis driving to export digitized control signal
Member.
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| CN201410653074.5A CN104360642B (en) | 2014-11-17 | 2014-11-17 | A kind of laser cutting machine digital control system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105834578B (en) * | 2016-04-07 | 2017-12-01 | 武汉菲仕运动控制系统有限公司 | A kind of Biaxial synchronous laser cutting machine control system |
| CN106502212B (en) * | 2016-10-20 | 2020-05-19 | 大族激光科技产业集团股份有限公司 | Integrated numerical control system of laser numerical control machine tool |
| CN108448373B (en) * | 2018-05-09 | 2020-02-04 | 深圳市创鑫激光股份有限公司 | Laser pulse power control method, pulse fiber laser and laser cutting system |
| CN109014623A (en) * | 2018-09-13 | 2018-12-18 | 苏州新火花机床有限公司 | A kind of numerical control ultra-short pulse laser micro hole machining device |
| CN109164760B (en) * | 2018-10-22 | 2020-07-14 | 大族激光科技产业集团股份有限公司 | Height adjusting method and device with dual working modes |
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| DE3912837A1 (en) * | 1989-04-19 | 1990-10-25 | Thomson Brandt Gmbh | CONTROL CIRCUIT |
| JP4520582B2 (en) * | 2000-04-25 | 2010-08-04 | ミヤチテクノス株式会社 | Laser processing equipment |
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Effective date of registration: 20170628 Address after: No. 9988 Nanshan District Shennan Road Shenzhen city Guangdong province 518000 Applicant after: HAN'S LASER TECHNOLOGY INDUSTRY GROUP Co.,Ltd. Applicant after: HAN'S PA AUTOMATION TECHNOLOGY Co.,Ltd. Applicant after: SHENZHEN HAN'S SMART CONTROL TECHNOLOGY Co.,Ltd. Address before: No. 9988 Nanshan District Shennan Road Shenzhen city Guangdong province 518000 Applicant before: HAN'S LASER TECHNOLOGY INDUSTRY GROUP Co.,Ltd. Applicant before: HAN'S PA AUTOMATION TECHNOLOGY Co.,Ltd. |
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Address after: 518000 No. 9988 Shennan Road, Nanshan District, Shenzhen, Guangdong Patentee after: HAN'S LASER TECHNOLOGY INDUSTRY GROUP Co.,Ltd. Patentee after: Shenzhen Han's photon laser technology Co.,Ltd. Patentee after: SHENZHEN HAN'S SMART CONTROL TECHNOLOGY Co.,Ltd. Address before: 518000 No. 9988 Shennan Road, Nanshan District, Shenzhen, Guangdong Patentee before: HAN'S LASER TECHNOLOGY INDUSTRY GROUP Co.,Ltd. Patentee before: HAN'S PA AUTOMATION TECHNOLOGY Co.,Ltd. Patentee before: SHENZHEN HAN'S SMART CONTROL TECHNOLOGY Co.,Ltd. |