CN106392307A - Laser cutting follow-up control and automatic objective focusing system - Google Patents
Laser cutting follow-up control and automatic objective focusing system Download PDFInfo
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- CN106392307A CN106392307A CN201610979378.XA CN201610979378A CN106392307A CN 106392307 A CN106392307 A CN 106392307A CN 201610979378 A CN201610979378 A CN 201610979378A CN 106392307 A CN106392307 A CN 106392307A
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- capacitance
- laser cutting
- cutting head
- nozzle
- control system
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Classifications
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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
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/04—Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light
- B23K26/046—Automatically focusing the laser beam
- B23K26/048—Automatically focusing the laser beam by controlling the distance between laser head and workpiece
-
- 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
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/082—Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
-
- 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
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
- B23K26/1462—Nozzles; Features related to nozzles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/14—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring distance or clearance between spaced objects or spaced apertures
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- Laser Beam Processing (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention discloses a laser cutting follow-up control system which comprises a controller, a capacitance detecting chip, a capacitance sensor, a servo motor driving system and an objective driving mechanism. The capacitance sensor is arranged on a laser cutting head nozzle and used for transmitting sensed capacitance to the capacitance detecting chip, the capacitance detecting chip is used for outputting corresponding voltage signals according to the received sensed capacitance, and the controller is used for receiving the voltage signals and driving the servo motor driving system according to the voltage signals, so that a laser cutting head is driven to move upwards or downwards. The objective driving mechanism is used for driving an objective of a laser head in the laser cutting head nozzle to move under the control of the controller. By means of the laser cutting follow-up control system, the height of the laser cutting head can be automatically adjusted according to the convex-concave degree of the surfaces of machined workpieces, a predetermined laser focal length is maintained, and machining precision is high.
Description
Technical field
The present invention relates to a kind of control device of laser cutting system.Systems a kind of laser cutting system
Automatic focusing control device.Be a kind of when cut sheet material runs into uneven change, laser cutting head (spray can be made
Mouth) follow-up control device that automatically changes with cutting sheet material apparent height change.
Background technology
Cut at home metal material cutting and the industrial circle such as automobile making obtain large-scale application, but make
For laser cutting system key component cut servo controller still based on Germany and the importing technology such as U.S., and exist
The problems such as demarcate difficult, complex interfaces, domestic similar technique also has that precision is not high, be difficult in adapt to high-speed cutting requirement etc. asks
Topic.In the urgent need to a kind of high speed of suitable domestic technique human users' present situation, the servo-actuated control of cut high-precision and easy to use
Device processed.
One of essential condition of cut is to must assure that good focusing, in cutting process, even if focal length occurs
The change of ± 0.1mm, may result in focus temp and hundreds of degrees Celsius of changes occurs, and produce jagged cut channel, serious reduction
Cut quality.In laser cutting process, sheet material diverse location height change then generally up to several millimeters, and Modern High-Speed
Processing needs cut speed to reach 60～120 meters per minute, and during this high-speed cutting, the high speed realizing laser is dynamic
Automatically focus on one of key technology being undoubtedly cut.An object of the present invention is exactly that to design a kind of cut servo-actuated
Controller, its function is the laser nozzle of the noncontacting proximity sensor output of collection laser cutting head lower end with respect to cutting
Cut panel height signal, and the altitude signal of collection is converted to the analog voltage signal controlling servo motor driving system, make
The servomotor of servo motor driving system can be under this analog voltage controls, with the uneven change of cutting plate plane
Change and in vertical direction, forward or reverse occurs, so that laser nozzle keeps constant with respect to the height of cutting sheet material, that is, swash
Light focal length is constant.
Content of the invention
Traditional laser cutting head servo controller typically adopts capacitive distance measuring method, and its measuring principle is laser
Electric capacity, capacitance and distance dependent between the two, measurement electric capacity therebetween is constituted between cutting head and metal processing piece
Value, you can calculate distance therebetween.Existing metering system is analogue measurement, measures electricity based on LC oscillating circuit principle
Hold, the problem adopted in this way is when the temperature is changed, inductance temperature influence changes very greatly, cause capacitance measurement to produce very
Big temperature drift errors.In addition traditional analog measuring speed is slower, and main cause is to need to turn the sine wave of the LC higher-order of oscillation
It is changed to the umber of pulse in square wave, then cooling water of units of measurement time, obtains frequency, then be scaled frequency, error is big.The present invention adopts single
Piece digital measurement mode, no temperature drift, speed are fast (can measure more than 1000 times within 1 second).
For realizing the purpose of the present invention, employ the following technical solutions and be achieved：
A kind of cut following control system, including controller, capacitance detecting chips, capacitance sensor, servomotor
Drive system, wherein：
Capacitance sensor is arranged on laser cutting head nozzle, for sending the capacitance signal detecting to capacitance detecting
Chip；
Capacitance detecting chips are used for exporting corresponding voltage signal according to the detection capacitance signal receiving；
Controller is used for receiving this voltage signal, and drives servo motor driving system according to this voltage signal, thus carrying
Dynamic laser cutting head moves up or down.
Described cut following control system, preferably：
Capacitance sensor includes metal induction plate, and laser cutting head nozzle is conical hollow structure, and outer layer is nozzle gold
Belong to shell, ground connection, internal layer is the metal induction plate of capacitance sensor, is provided with pottery between metal shell and metal induction electrode
Porcelain insulating layer, metal induction plate is horizontal-extending to nozzle exterior in nozzle lower end, and this extension is substantially annular in shape, and covers pottery
The part or all of lower surface of porcelain insulating layer.
Described cut following control system, preferably：
Metal induction plate top has circuit interface, and this circuit interface is connected with capacitance detecting chips by wire, will
Detection electric capacity is sent to capacitance detecting chips.
Described cut following control system, preferably：
Metal shell is provided with through hole, and relative with this through hole is provided with concentric with this through hole on ceramic insulating layer
One counterbore, the diameter of this first counterbore is identical with the through-hole diameter on metal shell, in the first counterbore base and this first counterbore
Concentric is provided with the second counterbore, and this second counterbore is perforated through this ceramic insulating layer；In metal induction plate with this second sink
What hole was concentric is provided with a blind hole, and this blind hole is identical with the diameter of the second counterbore, and this blind hole is provided with female thread.
Described cut following control system, preferably：
Cut following control system also includes capacitance sensor adapter, and this capacitance sensor adapter includes three sections
Round metal mast, the diameter of first paragraph cylindrical bar is minimum, is external screw thread rod-like structure, and middle second segment cylindrical bar two ends are respectively
It is connected with first paragraph cylindrical bar and the 3rd section of cylindrical bar, the diameter with diameter greater than first paragraph cylindrical bar of second segment cylindrical bar, slightly
Less than the diameter of the through hole on metal shell, the 3rd section of cylindrical bar is connected with second segment cylindrical bar, the diameter of the 3rd section of cylindrical bar
Diameter more than the through hole on metal shell.
Described cut following control system, preferably：
3rd section of cylindrical bar has first hollow hole, the first hollow hole with diameter greater than the through hole on metal shell
Diameter, and the depth of the first hollow hole is less than the length of the 3rd section of cylindrical bar；First hollow hole bottom is opened to the direction of second segment
There is a second elongated hollow hole, the diameter of the second hollow hole is less than the diameter of the first hollow hole, the depth of the second hollow hole
Extend to second segment cylindrical bar without reaching first paragraph cylindrical bar.
Described cut following control system, preferably：Second hollow hole is screwed hole.
Described cut following control system, preferably：
The first paragraph cylindrical bar of capacitance sensor adapter is tightened in the tapped blind hole of metal induction plate, the second cylinder
Bar passes through the through hole on metal shell, and is provided with felt pad between this through hole and the second cylindrical bar, and this felt pad is that band is outer
The hollow sleeve-like structure on flange edge, the hollow shell-like main body of felt pad is enclosed within the second cylindrical bar, the turning up of the main body of felt pad
Edge is arranged on the 3rd section between cylindrical bar and metal shell.
Described cut following control system, preferably：
Felt pad adopts elastomeric material.
Described cut following control system, preferably：
Fix on the connectors after second hollow hole of wire one end insertion adapter, wire other end connecting detection core
Piece.
Described cut following control system, preferably：
Capacitance detecting chips are previously provided with standard capacitor-value, and this standard capacitor-value is the processing of laser cutting head nozzle distance
The capacitance recording during surface of the work preset distance, when receiving the detection capacitance that capacitance sensor is sent, capacitance detecting
Detection capacitance is compared by chip with standard capacitor-value, according to comparative result output voltage signal.
Described cut following control system, preferably：
Capacitance detecting chips export 0 voltage when detection capacitance is equal with both standard capacitor-value, and the former is more than the latter
When export positive voltage, the former be less than the latter when, export negative voltage, and export the absolute value of positive and negative magnitude of voltage with detection electric capacity
The absolute value direct proportionality of capacitive differential between value and standard capacitor-value.
Described cut following control system, preferably：
After controller receives the voltage signal that capacitance detecting chips are sent, according to this voltage signal positive or negative to servo
The arteries and veins that motor driven systems send forward or reverse pulse signal and export corresponding pulses number according to the absolute value of voltage signal
Rush signal, servo motor driving system is after receiving pulse signal, corresponding by driver drives servomotor forward or reverse
Angle, and then drive the drive mechanism that is attached thereto, drive laser cutting head to move by drive mechanism up or down.
Described cut following control system, preferably：
This control system also includes object lens drive mechanism, and this object lens drive mechanism is used under the control of the controller, driving
The object lens of the laser head in laser cutting head nozzle move.
Described cut following control system, preferably：
Object lens drive mechanism includes driving system of stepping motor, ball screw assembly, and wherein, ball screw assembly, includes ball wire
Thick stick and matched nut, the object lens of laser head are arranged on nut.
Described cut following control system, preferably：
Cut following control system also includes host computer, inputs Regulate signal by host computer, and controller receives should
Regulate signal, sends the drive signal of forward or reverse according to this Regulate signal to driving system of stepping motor, and motor drives
The driver of dynamic system, according to this drive signal drive stepping motor forward or reverse, drives ball screw to rotate, thus driving
Nut moves up or down, thus driving object lens to move up or down.
Brief description
Fig. 1 is cut following control system structural representation of the present invention；
Fig. 2 a is capacitor sensor structure schematic diagram；
Fig. 2 b is capacitor sensor structure elevational schematic view；
Fig. 3 is capacitance sensor adapter connection diagram；
Fig. 4 is object lens drive mechanism schematic diagram.
Specific embodiment
As shown in figure 1, cut following control system includes controller (for example, it is possible to selecting high-speed microprocessor), electricity
Hold detection chip, capacitance sensor, servo motor driving system, object lens drive mechanism, host computer.Capacitance sensor will detect
Capacitance signal send capacitance detecting chips to；Capacitance detecting chips are according to the detection capacitance signal output electricity accordingly receiving
Pressure signal；Controller is used for receiving this voltage signal, and drives servo motor driving system according to this voltage signal, thus driving
Laser cutting head moves up or down.Controller also can receive the instruction of host computer, control driving system of stepping motor, make to swash
Amasthenic lens within shaven head moves up and down, and just laser spot is controlled the preset distance under nozzle to reach.As Fig. 2 a
With shown in Fig. 2 b, show the basic structure of capacitance sensor, capacitance sensor is arranged on laser cutting head nozzle, electric capacity passes
Sensor includes metal induction plate, and laser cutting head nozzle is conical hollow structure, and outer layer is nozzle metal shell, and ground connection is interior
Layer is the metal induction plate of capacitance sensor, is provided with ceramic insulating layer, metal between metal shell and metal induction electrode
Induction plate is horizontal-extending to nozzle exterior in nozzle lower end, and this extension is substantially annular in shape, and covers the portion of ceramic insulating layer
Divide lower surface.There is between laser cutting head and workpiece to be processed (metal works) certain spacing h, workpiece grounding, in metal
Electric capacity Cx is produced between induction plate and workpiece.Metal induction plate top has circuit interface, and this circuit interface is with wire even
Connect, wire is connected with detection chip after the through hole through on metal shell, and capacitance detecting value is sent to measurement chip.The opposing party
Face, from accompanying drawing 2, fixed capacity is that have admittedly between induction plate and the generation of laser cutting head upper metal shell in nozzle
Determine electric capacity C0, during measurement, it has proven convenient at times, the total capacitance value after being connected with electric capacity Cx with direct measurement fixed capacity, this
When capacitance sensor include metal induction plate, nozzle metal shell and ceramic insulating layer, but currently preferred selection
First kind of way, the capacitance of which collection is more sensitive, accurate.
As shown in figure 3, being capacitance sensor adapter connection diagram, metal shell is provided with through hole, with this through hole phase
To first counterbore concentric with this through hole be provided with ceramic insulating layer, on the diameter of this first counterbore and metal shell
Through-hole diameter is identical, the first counterbore base concentric with this first counterbore be provided with the second counterbore, this second counterbore penetrates this
Ceramic insulating layer；Concentric with this second counterbore in metal induction plate it is provided with a blind hole (circuit interface), this blind hole
Identical with the diameter of the second counterbore, this blind hole is provided with female thread.Capacitance sensor adapter generally ladder metal cylinder is shaft-like
Access node structure, the diameter of first paragraph cylindrical bar is minimum, is that the tapped blind hole in external screw thread rod-like structure, with metal induction plate is joined
Close, middle second segment cylindrical bar two ends are connected with first paragraph cylindrical bar bar, the 3rd section of cylindrical bar respectively, second segment cylindrical bar
With diameter greater than the diameter of first paragraph cylindrical bar, it is slightly less than the diameter of the through hole on metal shell, the 3rd section of cylindrical bar and second segment
Cylindrical bar is connected, the diameter with diameter greater than the through hole on metal shell of the 3rd section of cylindrical bar.3rd section of cylindrical bar has one
First hollow hole, the diameter with diameter greater than the through hole on metal shell of the first hollow hole and be less than the diameter of the 3rd section of cylindrical bar
And first hollow hole depth be less than the 3rd section of cylindrical bar length.First hollow hole bottom has one to the direction of second segment
The second elongated hollow hole, the diameter of the second hollow hole is less than the diameter of the first hollow hole, preferably less than above-mentioned blind hole straight
Footpath, the depth of the second hollow hole extends to second segment cylindrical bar without reaching first paragraph cylindrical bar, the second hollow hole can be
Screwed hole.
When connecting, the first paragraph cylindrical bar of capacitance sensor adapter sequentially passes through through hole and pottery on metal shell
The first counterbore on porcelain insulating layer is simultaneously tightened in the tapped blind hole of metal induction plate, and the second cylindrical bar passes through on metal shell
Through hole, and be provided with felt pad between this through hole and the second cylindrical bar, this felt pad is the hollow shell-like with flanging edge
Structure, is enclosed within the second cylindrical bar, and the hollow shell-like main body of felt pad is arranged between this through hole and the second cylindrical bar, felt pad
The flanging edge of main body is arranged on the 3rd section between cylindrical bar and metal shell.Preferably felt pad adopts the bullet such as rubber, resin
Property material.Wire one end can be fixed on the connectors after the second hollow hole of insertion adapter.Can be tightened on by screw
Mode in two hollow holes fixes wire, also can fix wire by way of welding, and the wire other end connects capacitance detecting core
Piece.
Capacitance sensor sends the electric capacity sensing to capacitance detecting chips, and capacitance detecting chips are examined with higher frequency
Survey this electric capacity (more than 1000 times can be measured in 1 second), and the electric capacity detecting is converted to voltage signal and be transferred to controller.Specifically
, capacitance detecting chips work as follows：Capacitance detecting chips are previously provided with standard capacitor-value, and this capacitance is laser
The capacitance being recorded by sensor during cutting head nozzle distance processing surface of the work preset distance (as 0.7mm).When receiving
Metal induction plate and processing surface of the work between capacitance when, capacitance detecting chips by detect capacitance enter with standard capacitor-value
Row compares, and exports output voltage according to comparative result, wherein, exports 0 voltage when the two is identical, and the former is more than output during the latter just
Voltage, when the former is less than the latter, exports negative voltage, and the absolute value of positive and negative magnitude of voltage exporting and detection capacitance and standard
The absolute value direct proportionality of the capacitance difference that capacitance is compared.
Servo motor driving system includes servomotor and the driver for driving servomotor.Controller receives electricity
After holding the output voltage values that detection chip is sent, according to the positive or negative driver to servo motor driving system of output voltage values
The pulse signal sending forward or reverse pulse signal and exporting corresponding number of pulses according to the absolute value of output voltage values,
Driver drives the corresponding angle of servomotor forward or reverse after receiving pulse signal, and then drives the drive being attached thereto
Motivation structure, drives laser cutting head to move by drive mechanism up or down, thus keeping laser cutting head nozzle and processing work
Preset distance between part surface.
During laser cutting head nozzle operation, the laser head within positioned at nozzle chamber sends laser beam, for cutting metal
Processing workpiece, when laser head is installed in nozzle chamber, is typically mounted at fixed position, when laser head is opened, you can by laser
Bundle focus emission delivery nozzle, but in practical situations both, installation site be possible to can deviation, and operationally, due to
Vibrations etc. reason, laser head can occur position move, be now likely to occur laser beam cannot well focussed in nozzle exterior
Situation, is now possible to damage nozzle, for this reason, the present invention is provided with object lens drive mechanism in nozzle, as shown in figure 4, this thing
Mirror drive mechanism includes driving system of stepping motor, ball screw assembly, and ball screw assembly, includes ball-screw and matched
Nut, object lens are arranged on nut, and collimating lens are arranged between lasing light emitter and object lens.Collimating lens are used for sending lasing light emitter
Laser be changed into parallel beam incident to object lens, object lens by this collimated light beam convergence after project on working face.Pass through
The displacement of object lens is finely tuned on light path, the convergent point of laser beam can be adjusted, such that it is able to nozzle will be focused of the light beam into
Outside.Driving system of stepping motor includes the driver (not shown) of motor and drive stepping motor, motor
Can be connected by shaft coupling, the mode such as V belt translation connection is connected with ball-screw.
Before laser cutting head, when being finely adjusted to laser beam, by host computer, input Regulate signal, controller receives
This Regulate signal, sends the drive signal of forward or reverse according to this Regulate signal to driving system of stepping motor, and driver exists
Under the driving of this drive signal, drive stepping motor forward or reverse, drive ball screw rotate, thus drive nut upwards or
Move down, thus driving object lens to move up or down, now the focal spot of laser beam can be moved, when outside nozzle
After reaching preset distance, stop input Regulate signal, the fine setting of laser beam focal length finishes.
During laser cutting head work of the present invention, first pass through the focal length that above-mentioned host computer finely tunes laser beam, laser cutting head is opened
When beginning to carry out cutting operation, capacitance detecting chips are believed according to the detection capacitance output voltage that the capacitance sensor receiving transmits
Number, controller receives the voltage signal of capacitance detecting chips, controls servo motor driving system to adjust spray according to this voltage signal
Mouth moves up and down, and keeps the preset distance between nozzle and workpiece.
Nozzle in carrying out sheet metal cutting process, the concavo-convex change of cut plate surface, will cause laser head spray
Cutting gap change between mouth and sheet material, after this change is detected by the capacitance sensor of laser cutting head bottom, capacitance signal
Send into capacitance detecting chips detection, testing result inputs high-speed microprocessor again, and (detection per second 1000 times is it is ensured that cutting gap detection
Real-time).High-speed microprocessor one side can change according to cutting gap, control servo motor driving system, make laser head
Move up and down and laser focal is kept dynamically constant.On the other hand, high-speed microprocessor also can receive the instruction of host computer, controls step
Stepper motor drive system, makes the focusing lens within laser head move up and down, is just controlled laser spot in nozzle with reaching
Lower about 0.7mm about, the focus that the present invention solves conventional laser head well easily burns out nozzle inside laser head, or burnt
Point in nozzle bottom position farther out, the problems such as so that the protective gas that nozzle sprays easily is dissipated and cannot protect.Meanwhile, single at a high speed
Testing result is also sent to host computer for analysis by piece machine.
By means of the invention it is possible to be conveniently adjusted the converging focal point of laser, simultaneously when carrying out work piece cut, can be at any time
According to the concavo-convex situation of surface of the work, automatically adjust the height of nozzle, keep laser beam to be located on predetermined focal length, realize high-precision
The cutting operation of degree.
Claims (6)
1. a kind of cut following control system, drives including controller, capacitance detecting chips, capacitance sensor, servomotor
Dynamic system it is characterised in that：
Capacitance sensor is arranged on laser cutting head nozzle, for sending the capacitance signal detecting to capacitance detecting core
Piece；
Capacitance detecting chips are used for exporting corresponding voltage signal according to the detection capacitance signal receiving；
Controller is used for receiving this voltage signal, and drives servo motor driving system according to this voltage signal, thus drive swashing
Light cutting head moves up or down.
2. cut following control system according to claim 1 it is characterised in that：
Capacitance sensor includes metal induction plate, and laser cutting head nozzle is conical hollow structure, and outer layer is outside nozzle metal
Shell, ground connection, internal layer is the metal induction plate of capacitance sensor, is provided with pottery absolutely between metal shell and metal induction electrode
Edge layer, metal induction plate is horizontal-extending to nozzle exterior in nozzle lower end, and this extension is substantially annular in shape, and covers pottery absolutely
The part or all of lower surface of edge layer.
3. cut following control system according to claim 2 it is characterised in that：
Metal induction plate top has circuit interface, and this circuit interface is connected with capacitance detecting chips by wire, will detect
Electric capacity is sent to capacitance detecting chips.
4. the cut following control system according to one of claim 1-3 it is characterised in that：
Capacitance detecting chips are previously provided with standard capacitor-value, and this standard capacitor-value is laser cutting head nozzle distance processing workpiece
The capacitance recording during the preset distance of surface, when receiving the detection capacitance that capacitance sensor is sent, capacitance detecting chips
Detection capacitance is compared with standard capacitor-value, according to comparative result output voltage signal.
5. cut following control system described in 11 is wanted according to right it is characterised in that：
Capacitance detecting chips export 0 voltage when detection capacitance is equal with both standard capacitor-value, and the former is more than defeated during the latter
Go out positive voltage, the former be less than the latter when, export negative voltage, and export the absolute value of positive and negative magnitude of voltage with detection capacitance with
The absolute value direct proportionality of capacitive differential between standard capacitor-value.
6. cut following control system described in 1 is wanted according to right it is characterised in that：
After controller receives the voltage signal that capacitance detecting chips are sent, according to this voltage signal positive or negative to servomotor
The pulse letter that drive system sends forward or reverse pulse signal and exports corresponding pulses number according to the absolute value of voltage signal
Number, servo motor driving system after receiving pulse signal, by the corresponding angle of driver drives servomotor forward or reverse
Degree, and then drive the drive mechanism being attached thereto, drive laser cutting head to move by drive mechanism up or down.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810086364.4A CN108422079B (en) | 2016-11-08 | 2016-11-08 | Control device of laser cutting system |
| CN201610979378.XA CN106392307B (en) | 2016-11-08 | 2016-11-08 | It is cut by laser servo antrol and object lens automatic focusing system |
| CN201810086349.XA CN108453373B (en) | 2016-11-08 | 2016-11-08 | Laser cutting follow-up control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610979378.XA CN106392307B (en) | 2016-11-08 | 2016-11-08 | It is cut by laser servo antrol and object lens automatic focusing system |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810086364.4A Division CN108422079B (en) | 2016-11-08 | 2016-11-08 | Control device of laser cutting system |
| CN201810086349.XA Division CN108453373B (en) | 2016-11-08 | 2016-11-08 | Laser cutting follow-up control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106392307A true CN106392307A (en) | 2017-02-15 |
| CN106392307B CN106392307B (en) | 2018-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810086349.XA Expired - Fee Related CN108453373B (en) | 2016-11-08 | 2016-11-08 | Laser cutting follow-up control system |
| CN201610979378.XA Expired - Fee Related CN106392307B (en) | 2016-11-08 | 2016-11-08 | It is cut by laser servo antrol and object lens automatic focusing system |
| CN201810086364.4A Expired - Fee Related CN108422079B (en) | 2016-11-08 | 2016-11-08 | Control device of laser cutting system |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810086349.XA Expired - Fee Related CN108453373B (en) | 2016-11-08 | 2016-11-08 | Laser cutting follow-up control system |
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| CN201810086364.4A Expired - Fee Related CN108422079B (en) | 2016-11-08 | 2016-11-08 | Control device of laser cutting system |
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| CN107953030A (en) * | 2017-12-26 | 2018-04-24 | 武汉力博物探有限公司 | A kind of processing method and system of laser cutting head process component |
| CN108581182A (en) * | 2018-04-28 | 2018-09-28 | 大族激光科技产业集团股份有限公司 | Laser processing device and method |
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| CN109483049A (en) * | 2018-11-28 | 2019-03-19 | 大族激光科技产业集团股份有限公司 | Laser cutting device and its focus adjustment method and focusing system |
| CN109940290A (en) * | 2019-04-09 | 2019-06-28 | 奔腾激光(温州)有限公司 | Control system based on three-dimensional five-axis 3D laser cutting |
| CN110039190A (en) * | 2019-04-03 | 2019-07-23 | 大族激光科技产业集团股份有限公司 | A kind of laser cutting control method, device and computer readable storage medium |
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| CN110711937A (en) * | 2019-11-14 | 2020-01-21 | 安徽同兴科技发展有限责任公司 | Parameter determination method for laser focusing of cutting machine |
| CN111421254A (en) * | 2020-03-20 | 2020-07-17 | 大族激光科技产业集团股份有限公司 | Follow-up height-adjusting sensor structure and measurement and control system |
| CN111774722A (en) * | 2020-06-30 | 2020-10-16 | 大族激光科技产业集团股份有限公司 | Intelligent control method based on decay of feedback signal of capacitive sensor of laser system |
| CN112496565A (en) * | 2020-11-17 | 2021-03-16 | 上海维宏智能技术有限公司 | Device for realizing signal processing of servo system of laser cutting head |
| CN112496565B (en) * | 2020-11-17 | 2023-03-03 | 上海维宏智能技术有限公司 | Device for realizing signal processing of servo system of laser cutting head |
| CN113977332A (en) * | 2021-12-02 | 2022-01-28 | 上海维宏智能技术有限公司 | Method, device, processor and storage medium for realizing obstacle detection and active obstacle avoidance control based on capacitive sensor |
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| CN114785294A (en) * | 2022-06-20 | 2022-07-22 | 南京超颖新能源科技有限公司 | Capacitor acquisition amplifier and laser head adjusting device using same |
| CN116511697A (en) * | 2023-05-15 | 2023-08-01 | 江苏跃格智能装备有限公司 | Automatic focusing system for cutting head of laser cutting machine and equipment thereof |
| CN117102701A (en) * | 2023-10-24 | 2023-11-24 | 上海方菱计算机软件有限公司 | Compensation control method and device for groove cutting height, electronic equipment and storage medium |
| CN117102701B (en) * | 2023-10-24 | 2024-03-26 | 上海方菱计算机软件有限公司 | Compensation control method and device for groove cutting height, electronic equipment and storage medium |
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| CN117697178B (en) * | 2024-02-01 | 2024-06-07 | 宁德时代新能源科技股份有限公司 | Tab forming device, tab forming method, electronic device and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108422079B (en) | 2020-04-10 |
| CN108453373A (en) | 2018-08-28 |
| CN108453373B (en) | 2020-04-14 |
| CN108422079A (en) | 2018-08-21 |
| CN106392307B (en) | 2018-04-10 |
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