CN104722922B - Laser welder dynamic welding method - Google Patents
Laser welder dynamic welding method Download PDFInfo
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- CN104722922B CN104722922B CN201410809150.7A CN201410809150A CN104722922B CN 104722922 B CN104722922 B CN 104722922B CN 201410809150 A CN201410809150 A CN 201410809150A CN 104722922 B CN104722922 B CN 104722922B
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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
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
- B23K26/26—Seam welding of rectilinear seams
-
- 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
- B23K26/03—Observing, e.g. monitoring, the workpiece
- B23K26/032—Observing, e.g. monitoring, the workpiece using optical means
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/16—Bands or sheets of indefinite length
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a kind of laser welder dynamic welding method that can be very good to ensure that weld seam is linearly, at the feeding of edge end to end to the welding machine of former and later two stainless-steel rolls, ensure that edge to be welded is in the actual welding region of welding machine, welding machine scissors is sheared to steel edge portion, is carried out the measurement of strip width by external sensor and is realized the adjustment process of center line；Correct welding parameter is called according to the material specification of reality, the self-driven lateral fore side of laser head moves, and completes the welding process of strip, the first step：Actual welds data acquisition, second step：Data analysis is screened, and deviation point calculates, the 3rd step：According to data deviation, adjustment of displacement reference data is produced.It is an advantage of the invention that：Ensure that weld seam is linearly, at the same the longitudinal traction track of welding gun with weld seam is vertical in solid space overlaps, reduce the labor intensity of production operation personnel, improve device efficiency and stability, lifting welding success rate and automaticity.
Description
Technical field
The present invention relates to a kind of laser welder dynamic welding method.
Background technology
Along with the market demand and plant-scale expansion and development, metallurgical industry is carrying out the investment or expansion of cold-rolled products
When building handling process production line, PROCESS FOR TREATMENT of a large amount of design and installation continuous annealing pickling lines as stainless steel product is had started to
And quality improving.This means that the application of the automatic welder for steel band welding is more and more extensive.
Existing cold rolling factory CAPL production lines employ advanced laser automatic welder, mainly there is that welding quality is good, hot shadow
Ring the features such as area is small.The welding machine realizes that whole-course automation welding step performs, while is equipped with other ancillary equipment and carries out strip
Mass monitoring system (QAS) before and after positioning and welding.The welding machine uses the welding manner that parallel docking welding wire is filled up, to weld seam
It is higher to form quality requirement.Weld seam forms the accurate control of servomotor realization for relying primarily on driving side and fore side, control essence
Degree is up to 0.01mm.But in practical application, installed by equipment, the factor such as mechanical transmission component tolerance is influenceed, actual welds control
Effect can not reach design requirement.Operating personnel are caused to need to adjust welding parameter in welding process or carry out data calibration,
Strong influence normal production operation.Band is ultimately applied to after the speculum refraction that laser generator produces and passes through difference in functionality
On steel.Last plane mirror piece is arranged on welding arm, it is necessary to be moved in orbit with welding arm, and track can carry out two-way
Fine setting.In actual applications, form when track remains installation can not be ensured, influenceed by vibration equipment etc., it may occur that one
Determine the deformation or skew of degree.Cause laser action also to be shifted in the position of strip, cause laser can not be with actual weldering
Seam coincide.Laser head can carry out position correction (zero adjustment), but can only realize the single adjustment of absolute position, and its purpose is
The position correction of laser head is carried out according to position while welding, i.e., laser head remains at unique position in welding process, can not
Action.The situation that laser action point can not match completely with weld seam is so caused, has a strong impact on welding quality and production efficiency.
Laser welder has welding efficiency height, the spies such as welding depth is big and heat affected area is small compared with other welding manners
Point.But limited by control mode is vertically moved, it requires that welding medium splicing state is higher, in traditional design and using mould
Under type, welding effect can not meet high-precision welding quality demand, be mainly shown as：Laser welder is necessary to ensure that medium is spelled
The weld seam connect is in line state, while requires longitudinal traction track and weld seam is vertical in solid space overlaps, and otherwise can cause
The situation of practical laser focus application point and welding seam bias, will when the situation of failure welding occurs in stainless steel manufacture field
Cause situation about declining by the ineffective weld stress of welding, can now cause broken belt or tear, the production operation to reality shows
Field, which causes, to be had a strong impact on.In the counter-measure of routine, artificial visual is usually taken and examines and carries out remedying for artificial repair welding
Measure, such a coping style add labor operation intensity, while the mode welded manually can not carry out the welding of steel completely.
This can cause actual production scheduling slow, and production efficiency and technology controlling and process are bad, and the final economic benefit that produces influences.
Because laser welder fuel factor region is small, the track or other facilities as drawn laser head movement in welding process are inclined
From, will cause practical laser focus can not act on completely welding object junction the problems such as.
The content of the invention
The technical problems to be solved by the invention are：A kind of Laser Welding that can be very good to ensure that weld seam is linearly is provided
Motor-driven state welding method.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of laser welder dynamic welding method,
At the feeding of edge end to end to the welding machine of former and later two stainless-steel rolls, ensured by side that is automatic and controlling manually to be welded
Edge fit portion is in the actual welding region of welding machine, and fixture is respectively used to fix front and back band steel that (stainless-steel roll is end to end before and after welding machine
Portion)；Welding machine scissors is sheared to steel edge portion, it is ensured that remainder is suitable for the centering of fixture and forms weld seam；By outer
Portion's sensor carries out the measurement of strip width and realizes the adjustment process of center line；Called according to the material specification of reality correct
Welding parameter, the self-driven lateral fore side of laser head move, and complete the welding process of strip；After the completion of welding, the equipment such as fixture
Initial and holding fix is returned to,
Wherein, the first step：Actual welds data acquisition,
Before welding action is carried out, fixture is entered front and back band steel by telescopic hydraulic cylinder driving mechanical clamping plate before and after welding machine
Row steps up and fixed, and steel edge portion is trimmed to the reserved band of requirement using scissors device, will by both sides position control motor
Front and rear fixture adjusted to neutralizing, and now front and rear sides strip presses close to be formed actual welds form, then utilizes rolling line steel pipe
High-speed camera in measurement system can obtain belt steel thickness by the data acquisition to front and back band steel edge, width, gap,
The real data such as center line, after DAS synthesis in rolling line steel pipe measurement system, it can obtain the standard of current strip
Exact figures evidence, with this come obtain the real data such as accurate effective weld seam morphological data, belt steel thickness, width, gap, center line by
The collection of rolling line steel pipe measurement system is completed, belt steel thickness, width, gap, and the real data such as center line is calculated and analyzed through PLC
Afterwards, laser head reference by location foundation will be used as during the actual welding of strip, actual welds are understood according to the data of collection
And the deviation of standard weld, the weld width measured everywhere is averaged, average weld width value can be obtained, pass through calculating
Formula is understood, weld width measured value-average weld width value=weld seam deviation, can be reduced or be disappeared by automatically controlling laser head
Except deviation；
Second step：Data analysis is screened, and deviation point calculates,
The screening and calculating of data are completed through PLC control system, so as to obtain the deviation of actual welds and standard weld
Data, PLC system mainly gather each 50 data d1~d50 in current weld seam both sides, by taking when carrying out weld width analysis
The mode of average value show that average weld width is wide as actual welds benchmark, the average weld seams of (d1+d2...d50)/50=
Degree, by averaging and can obtain weld seam reference center line the both sides weld width that is averaged.PLC system weld seam analyze data bag
Contain：The strip position of actual welds, Weld pipe mill line position, weld seam developed width, laser head shift position refers to after calculating
Etc. key data index, the calculating of the step and analysis result are deposited in plc data block, wherein saving corresponding current strip
The deviation for the actual form that weld seam is formed, coordinate direction is carried out according to steel edge portion and defined, by the sides aligned parallel of steel edge portion
Direction is defined as longitudinal coordinate, and its vertical direction is lateral coordinates, and other measurements and control data are determined with this travel direction
Justice, when laser head is moved to corresponding longitudinal coordinate position, call to should the deviation of position moved as laser head
Reference position, according to the deviation situation of actual welds, laser head remains the state of real-time dynamic mobile, so as to effective
Tracking actual welds；
3rd step：According to data deviation, adjustment of displacement reference data is produced,
It is real-time using servo-control system according to the change of the longitudinally running position of reality of laser head in welding process
Dynamic regulation, enable actual welds synchronous with standard weld holding and match, eliminate laser spot and the deviation situation of weld seam,
By the calculating deviation of weld seam reference center line caused by second step and actual welds center line, as servomotor transverse shifting
Reference by location, the actual reference displacement for servomotor of calculated value inputs, and servomotor drives laser head to produce actual act
Output.
It is an advantage of the invention that：Ensure that weld seam is linearly, while the longitudinal traction track of welding gun and weld seam are empty in solid
Between in vertically overlap, reduce the labor intensity of production operation personnel, improve device efficiency and stability, lifting welding success rate and
Automaticity.
Embodiment
Lower laser welder dynamic welding method of the present invention, the equipment Weldability model in this case embodiment is described in detail below
Enclosing is：Can be 0.3-5.0mm to thickness；Width is 300-1600mm stainless steel plate.
In the design process of control system, the steel plate for each thickness specification has carried out the setting and survey of welding parameter
Examination, data are stored in PLC system.According to the steel plate specification currently welded, system calls corresponding welding parameter automatically.
(QAS forms actual form for weld seam as this case embodiment and carries out related data analysis and processing system, in original equipment
The analysis of weld seam form is only applied in composition, its gathered data is simultaneously not involved in actual weld seam formation control and welding adjustment),
Comprise the following steps：
At the feeding of edge end to end to the welding machine of former and later two stainless-steel rolls, ensured by side that is automatic and controlling manually to be welded
Edge fit portion is in the actual welding region of welding machine, and fixture is respectively used to fix front and back band steel before and after welding machine；Welding machine scissors is to strip
Edge is sheared, it is ensured that remainder is suitable for the centering of fixture and forms weld seam；It is wide that strip is carried out by external sensor
The measurement of degree and the adjustment process for realizing center line；Correct welding parameter is called according to the material specification of reality, laser head is certainly
Drive lateral fore side to move, complete the welding process of strip；After the completion of welding, the equipment such as fixture returns to initial and wait position
Put,
Wherein, the first step：Actual welds data acquisition,
Before welding action is carried out, fixture is entered front and back band steel by telescopic hydraulic cylinder driving mechanical clamping plate before and after welding machine
Row steps up and fixed, and steel edge portion is trimmed to the reserved band of requirement using scissors device, will by both sides position control motor
Front and rear fixture adjusted to neutralizing, and now front and rear sides strip presses close to be formed actual welds form, then utilizes rolling line steel pipe
High-speed camera in measurement system (QAS) can obtain belt steel thickness by the data acquisition to front and back band steel edge, width,
The real data such as gap, center line, after DAS synthesis in rolling line steel pipe measurement system, it can obtain current strip
Accurate data, the actual numbers such as accurate effective weld seam morphological data, belt steel thickness, width, gap, center line are obtained with this
Completed according to being gathered by rolling line steel pipe measurement system, belt steel thickness, width, gap, the real data such as center line is calculated and divided through PLC
After analysis, laser head reference by location foundation will be used as during the actual welding of strip, actual weldering is understood according to the data of collection
The deviation of seam and standard weld, the weld width measured everywhere is averaged, and can be obtained average weld width value, be passed through meter
Calculate formula to understand, weld width measured value-average weld width value=weld seam deviation, can be reduced by automatically controlling laser head or
Eliminate deviation；
Second step：Data analysis is screened, and deviation point calculates,
The screening and calculating of data are completed through PLC control system, so as to obtain the deviation of actual welds and standard weld
Data, PLC system mainly gather each 50 data d1~d50 in current weld seam both sides, by taking when carrying out weld width analysis
The mode of average value show that average weld width is wide as actual welds benchmark, the average weld seams of (d1+d2...d50)/50=
Degree, by averaging and can obtain weld seam reference center line the both sides weld width that is averaged, PLC system weld seam analyze data master
Contain：The strip position of actual welds, Weld pipe mill line position, weld seam developed width, laser head shift position after calculating
With reference to etc. key data index, the calculating of the step and analysis result deposit in plc data block, wherein saving corresponding current
The deviation for the actual form that strip steel weld joint is formed, coordinate direction is carried out according to steel edge portion and defined, by the edge of steel edge portion
Parallel direction is defined as longitudinal coordinate, and its vertical direction is lateral coordinates, and other measurements and control data are with this travel direction
Definition, when laser head is moved to corresponding longitudinal coordinate position, call to should position deviation as laser head move
Dynamic reference position, according to the deviation situation of actual welds, laser head remains the state of real-time dynamic mobile, so as to
Effective tracking actual welds；
3rd step：According to data deviation, adjustment of displacement reference data is produced,
It is real-time using servo-control system according to the change of the longitudinally running position of reality of laser head in welding process
Dynamic regulation, enable actual welds synchronous with standard weld holding and match, eliminate laser spot and the deviation situation of weld seam,
By the calculating deviation of weld seam reference center line caused by second step and actual welds center line, as servomotor transverse shifting
Reference by location, the actual reference displacement for servomotor of calculated value inputs, and servomotor drives laser head to produce actual act
Output.
, it is necessary to carry out the compilation of data acquisition program logic in practical application or design, according to the maximum of welding machine effectively
Weld width, and welding precision requirement, formulate data acquisition quantity.Simultaneously, it is necessary to carry out laser horizontal stroke using servo-control system
Accurate control to coordinate.
In this case embodiment, can be applied to thickness is 0.3mm -5.0mm；Width is 300mm -1600mm stainless steel
Band.
According to the dynamic welding method for carbon dioxide laser welding machine, can solve problems of the prior art, drop
The labor intensity of low production operation personnel, improve device efficiency and stability, lifting welding success rate and automaticity.Cold
In the production process for rolling continuous annealing pickling unit, the processing of coil of strip successively by uncoiler, soldering, cleaning by degreasing plus
Hot stove annealing/cooling and multistage pickling, surfacing/stretcher leveling, coiling machine.Due to the special producing of continuous annealing pickling line
State, under normal circumstances in order to ensure the continuous running status of production line, outfit automatic welder is needed to set in PROCESS FOR TREATMENT leading portion
It is standby, the welding sequence of strip is carried out in a manner of rapidly and efficiently, so as to meet the needs of PROCESS FOR TREATMENT.
When being measured using QAS equipment to actual welds, because of laser head traction track deformation effect, monitoring system butt welding
The monitoring result of seam shows serious bending situation, is analyzed according to measurement result, and laser head traction track laterally goes out in driving
Mouth strip direction is substantially offset.Similarly it can determine that, in welding process, laser action point will be in driving side outlet strip side
It to skew, will not act at actual welds, cause to drive the large range of failure welding situation of side region to occur.In such a feelings
The strip carried out under condition can not meet tension test, crack conditions can be produced during actual job.
In this example, it is necessary first to be replaced by the direct current generator for being used to carry out laser head position correction in the prior art
Servomotor, while servo drive should be equipped with, servo-drive system has higher control accuracy compared with common DC motor
And dynamic response, using relatively broad in the field for needing accurate position or angle control.In example, because by installing space
Limitation, have selected the servodrive of FAUCHABER companies, the device supports CAN communication protocol, therefore needs to use
Coupler accesses the existing Profibus networks of welder equipment.
Example Program control system uses the series of PLC of Siemens S7 300, and concrete function realizes that program is as follows：
1. the welding step of the former control program of change, increase weld measurement position adjustment and QAS detections
The first step：In order to improve the precision of weld seam formation, it should exchange and have suffered before final position while welding control is carried out
Cheng Jinhang preanalysis and judgement.It is implemented as：When carrying out weld seam formation action, outlet side band is controlled by servo drive first
Steel is advanced into the position less than target weld seam, that is, controls strip to be not entirely to final goal position.Strip is controlled in example
Premeasuring position is：Target location+0.2mm
Example：Weld seam is set：0.1mm, then：Premeasuring position:0.1+0.2=0.3mm
Strip state analyze in premeasuring position by QAS and gathered data, and its data is understood after carrying out Step2 calculating
Whether weld seam control accuracy reaches requirement, can be controlled adjustment immediately if it deviation be present.
2. increase the data block for preserving QAS detection data in original program
Second step：According to effective welding stroke of actual welding machine, 250 groups of data, every group of number are edited in the data block
According to containing：A. laser head longitudinal coordinate position；B. left side strip position；C. right side strip position；D. Weld pipe mill position；
E. weld width.Produced when data above measures by QAS, PLC reads corresponding according to laser head longitudinal coordinate equi-spaced apart
Real time data.State-detection is carried out to established weld seam in QAS, tested strip is defined as most 250 coordinates, every
The analyze data needed is produced at individual coordinate.This step requires that QAS can carry out accurate Data Detection to strip, so as to obtain just
True analysis and the numerical value for calculating.Specific procedure is interpreted as：QAS equipment is vertically moved and right by the traction of servo drive equipment
Strip position data implements collection, and when being not detected by strip medium, data are produced as zero (can be determined as nothing in PLC program
Imitate data), foundation is used as according to the position of transmission device feedback, takes the mode of fixed intervals to read QAS data and preserves to PLC
In data block, according to the width difference of tested strip, the number of caused valid data is different.QAS detects to obtain first group of number
While according to last group of data, region deviding value of its lengthwise position value of feedback as laser head in welding process, and
And the region sign of data analysis is also served as depositing the data block mark of data.Such as：First group of data and last group
During generation, DBW160 and DBW660 that data are deposited in data block respectively, then it represents that all calculating data are according in DBW160
Between DBW660, other regions are invalid data.
3. updating control data, final weld seam is formed
3rd step：After PLC obtains QAS data, united analysis and calculating are carried out to all data, such as laser head curved in tracks
Deformation or strip edge edge are into irregular curve form, and data should be different everywhere, i.e. actual welds width and QAS inside points
Deviation be present in analysis data, will measure everywhere weld width is averaged, can obtain an average weld width value (Ave
Gap), simple calculating formula is passed through：QAS measured values (QAS Gap)-weld seam average value (Ave Gap)=weld seam deviation
(Gap diff), understood with this：
Premeasuring position-target location+Gap diff=Gap offset (weld seam adjustment correction value).Obtained by this method
Weld seam establish during control error amount and be modified, so as to improve weld seam formation precision.
4th step：According to actual control result and the deviation of control benchmark, actual displacement is produced
PLC can obtain centreline data (Pre Gap center) caused by QAS detection weld seams simultaneously, according to above-mentioned reality
Border situation, the Pre Gap center numerical value at each point is different, by each point data compared with center reference value, it is known that each point
Actual deviation, such as：
Weld seam sets (Gap set)：0.1mm, then：Pre-adjustment weld seam (Pre gap):0.1+0.2=0.3mm
With reference to Weld pipe mill position (Nominal gap center)=0.05；Pre-adjustment Weld pipe mill position (Pre gap
Center)=0.15
Assuming that：The actual center line (center line)=0.18 for measuring P1 points (is more than average centerline 0.18-0.15
=0.03)
The reference laser light position of P1 points：Referred to reference to axis of a weld (nominal center)+0.03=laser offsets
It is worth (laser cross reference)
Laser datum position is in entrance side band steel edge, then laser cross reference=0.05+0.03=
0.08mm, when laser head is longitudinally moved at P1, Synchronization Control laser head transverse shifting 0.08mm, so as to accurately look for
To actual welds position.
Dynamic welding method according to an exemplary embodiment of the present invention for carbon dioxide laser welding machine, it is effective to solve
Because being installed by equipment in actual application, the factor such as environment influences laser welding, caused welding coverage rate and welding
Low success rate of situation, and accurate analysis and adjustment to actual welds are realized, by being moved for the purpose of tracking welding slit state
State welding control.Avoid stainless steel belt in welding process to deviate, while propose a kind of data of efficient stable
Analysis and calculation.So that real-time and accuracy are greatly improved laser welder technology in actual applications.
Claims (1)
1. laser welder dynamic welding method, it is characterised in that：Comprise the following steps：
At the feeding of edge end to end to the welding machine of former and later two stainless-steel rolls, ensured by way of automatic and control manually to be welded
Edge is in the actual welding region of welding machine, and fixture is respectively used to fix front and back band steel before and after welding machine；Welding machine scissors is to strip edge
Sheared in portion, it is ensured that remainder is suitable for the centering of fixture and forms weld seam；Strip width is carried out by external sensor
Measurement and realize the adjustment process of center line；Correct welding parameter, laser head self-powered are called according to the material specification of reality
Dynamic lateral fore side movement, complete the welding process of strip；After the completion of welding, fixture returns to initial and holding fix；
Wherein, the first step：Actual welds data acquisition,
Before welding action is carried out, fixture is added front and back band steel by telescopic hydraulic cylinder driving mechanical clamping plate before and after welding machine
It is tight and fixed, steel edge portion is trimmed to the reserved band of requirement using scissors device, by both sides position control motor by before and after
Fixture adjusted to neutralizing, and now front and rear sides strip presses close to be formed actual welds form, is then measured using rolling line steel pipe
High-speed camera in system can obtain belt steel thickness, width, gap, center by the data acquisition to front and back band steel edge
The real data of line, after DAS synthesis in rolling line steel pipe measurement system, it can obtain the accurate number of current strip
According to obtaining accurate effective weld seam morphological data with this, belt steel thickness, width, gap, the real data of center line is by rolling line
The collection of steel pipe measurement system is completed, belt steel thickness, width, gap, and the real data of center line, will after PLC is calculated and is analyzed
Laser head reference by location foundation is used as during the actual welding of strip, actual welds and standard are understood according to the data of collection
The deviation of weld seam, the weld width measured everywhere is averaged, average weld width value can be obtained, can by calculation formula
Know, weld width measured value-average weld width value=weld seam deviation, can be reduced or eliminated partially by automatically controlling laser head
Difference；
Second step：Data analysis is screened, and deviation point calculates,
The screening and calculating of data are completed through PLC control system, so as to obtain the bias data of actual welds and standard weld,
PLC system mainly gathers each 50 data d1~d50 in current weld seam both sides, by being averaged when carrying out weld width analysis
The mode of value show that average weld width as actual welds benchmark, the average weld widths of (d1+d2...d50)/50=, leads to
Cross and the both sides weld width that is averaged is averaged and can obtain weld seam reference center line, the weld seam analyze data of PLC system is main
Contain：The strip position of actual welds, Weld pipe mill line position, weld seam developed width, laser head shift position is joined after calculating
The key data index examined, the calculating of the step and analysis result are deposited in plc data block, wherein saving corresponding current band
The deviation for the actual form that steel weld seam is formed, coordinate direction is carried out according to steel edge portion and defined, the edge of steel edge portion is put down
Line direction is defined as longitudinal coordinate, and its vertical direction is lateral coordinates, and other measurements and control data are with this travel direction
Definition, when laser head is moved to corresponding longitudinal coordinate position, call to should position deviation as laser head movement
Reference position, according to the deviation situation of actual welds, laser head remains the state of real-time dynamic mobile, so as to have
The tracking actual welds of effect；
3rd step：According to data deviation, adjustment of displacement reference data is produced,
According to the change of the longitudinally running position of reality of laser head in welding process, the real-time dynamic of servo-control system is utilized
Regulation, enables actual welds synchronous with standard weld holding and matches, and eliminates laser spot and the deviation situation of weld seam, passes through
The calculating deviation of weld seam reference center line caused by second step and actual welds center line, the position as servomotor transverse shifting
Reference is put, the actual reference displacement for servomotor of calculated value inputs, and servomotor drives laser head to produce actual act output.
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| CN201410809150.7A CN104722922B (en) | 2014-12-23 | 2014-12-23 | Laser welder dynamic welding method |
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| CN107598377B (en) * | 2017-08-19 | 2019-07-26 | 浙江哈尔斯真空器皿股份有限公司 | The welding method and its automatic welding device of a kind of metal thermos cups port weld seam |
| CN107442953A (en) * | 2017-09-14 | 2017-12-08 | 武汉唯拓光纤激光工程有限公司 | A kind of compensation method of laser pipe cutter machining deviation |
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Address after: 215625 Puxiang (Zhangjiagang) Stainless Steel Co., Ltd. on the north side of the Yangtze River Highway, Jinfeng Town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee after: Puxiang (Zhangjiagang) Stainless Steel Co., Ltd. Address before: 215625 Zhangjiagang Puxiang Stainless Steel Co., Ltd., Jinfeng Town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee before: Puxiang Stainless Steel Co Ltd, Shangjiagang |