CN107414287A - A kind of laser welding defocus amount determining device and assay method - Google Patents
A kind of laser welding defocus amount determining device and assay method Download PDFInfo
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- CN107414287A CN107414287A CN201710768378.XA CN201710768378A CN107414287A CN 107414287 A CN107414287 A CN 107414287A CN 201710768378 A CN201710768378 A CN 201710768378A CN 107414287 A CN107414287 A CN 107414287A
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- 238000003466 welding Methods 0.000 title claims abstract description 58
- 238000003556 assay Methods 0.000 title claims abstract description 8
- 230000005855 radiation Effects 0.000 claims abstract description 8
- 238000006073 displacement reaction Methods 0.000 claims description 11
- 230000033001 locomotion Effects 0.000 claims description 7
- 229910000679 solder Inorganic materials 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 4
- 230000008054 signal transmission Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 16
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000005433 ionosphere Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
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- 230000004927 fusion Effects 0.000 description 1
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- 231100000289 photo-effect Toxicity 0.000 description 1
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- 230000035945 sensitivity Effects 0.000 description 1
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Classifications
-
- 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
-
- 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
-
- 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
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
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- Engineering & Computer Science (AREA)
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- Laser Beam Processing (AREA)
Abstract
The present invention discloses a kind of laser welding defocus amount determining device, including laser feeler, controller box and computer, radiation of visible light is sent in face of weld provided with generating laser inside laser feeler, PSD detectors are provided with inside controller box and receive weld seam reflection light, laser feeler and controller box are fixedly linked, laser feeler center line and the controller box center line intersect, and computer electrically connects with generating laser and the PSD detectors respectively.The present invention also proposes a kind of assay method using laser welding defocus amount determining device.Relative to prior art, technical solution of the present invention has the advantages that measurement is convenient, precision is higher, reliability and versatile, can improve reliability, precision and the operating efficiency of laser welding defocusing amount measure.
Description
Technical field
The present invention relates to laser welding technology field, more particularly to a kind of laser welding defocus amount determining device and measure side
Method.
Background technology
Laser welding technology is due to action time is short, efficiency high, speed are fast, deformation is small, weldquality is high and welding
The advantages that precision is high, easy to automate, obtained in technical fields such as automobile, train, ship, Aero-Space, machine-building
Extensive use simultaneously progressively substitutes traditional Arc Welding Process.
Need to carry out certain preparation before laser welding, wherein need carry out teaching preparatory stage early stage, wherein weld from
Jiao's amount debugging is a difficult point, and particularly with different thickness of slab material laser processings, required defocusing amount debugging will increase extensive work,
And manual debugging precision is relatively low, it is difficult to reaches expected technological requirement.
In laser welding technology, defocusing amount refers to the distance of laser beam focusing focus opposite piece material surface, focus
It is referred to as positive out of focus above material surface, focus is located at below material surface or internal then referred to as negative defocus.Defocusing amount pair
There is considerable influence in weld shape, fusion penetration and molten wide, therefore in order to ensure weldquality, it is necessary to which strictly defocusing amount is welded in control.
The monitoring method of defocusing amount mainly includes the direct method of measurement, tool locating when in the prior art, for laser welding
Method etc., the direct method of measurement uses survey tool, such as the direct measurement such as slide calliper rule lens to the distance of workpiece to be welded, and frock is determined
Position rule is that the frock of different length is made according to different defocusing amounts, and welding defocusing amount is determined by frock length.Above two
Method can be used directly in plate welding, but its operating efficiency is relatively low, when weld seam is three-dimensional curve, above two welding side
Method can not realize the real-time control of defocusing amount in welding.When the mathematical modeling of measured workpiece is unknown or is difficult directly to obtain
When it is necessary to first implementing to layout measurement to track to be measured, then the corresponding algorithm process of measurement data progress these specified points,
So as to obtain the ideal mathematics model of track to be measured.If measured using manual crawl, trueness error be present, will to operator
Ask higher and the defects of wasting time and energy be present, therefore there is an urgent need to a kind of new method to solve above-mentioned technical problem.
The content of the invention
The main object of the present invention is to propose that a kind of measurement is convenient, precision is higher, reliability and versatile Laser Welding
Defocus amount determining device is connect, the present invention also proposes a kind of assay method using the laser welding defocus amount determining device, purport
Improving reliability, precision and the operating efficiency of laser welding defocusing amount measure.
To achieve the above object, a kind of laser welding defocus amount determining device proposed by the present invention, including laser feeler, control
Device box and computer processed, the laser feeler inside sends radiation of visible light in face of weld provided with generating laser, described
PSD detectors are provided with inside controller box and receive weld seam reflection light, the laser feeler and the controller box are fixedly linked,
The laser feeler center line and the controller box center line intersect；The computer respectively with the generating laser and institute
State the electrical connection of PSD detectors.
Preferably, the PSD detectors include the PSD photoelectric position-sensitives element driving circuit being electrically connected to each other and A/D conversions
Circuit, the PSD photoelectric position-sensitives element driving circuit receive reflection light and convert optical signals to analog signal, the A/D
Change-over circuit converts analog signals into data signal and sent to the computer.
Preferably, the laser feeler is moved by the first servo drive system drives edge different directions, and described first
Servo drive system and the calculating mechatronics.
Preferably, first servo drive system be provided with multiple servomotors drive the laser feeler along X-axis, Y-axis,
Z-direction moves.
Preferably, workpiece to be welded is positioned over bench top, and the workbench is driven by the second servo drive system and carried out
Horizontal plane direction is moved, and second servo drive system is provided with multiple servomotors and drives the workbench along X-axis, Y-axis side
To movement.
Preferably, the laser feeler bottom is provided with shrink beam convex lens.
Preferably, one end of the controller box towards weldment is provided with reception convex lens.
Preferably, the computer by CAN fieldbus respectively with the generating laser and the PSD detectors
It is connected.
The present invention also proposes a kind of assay method using the laser welding defocus amount determining device, including following step
Suddenly：
Step S1：Workpiece to be welded is positioned over the bench top, and the computer controls second servo-drive
Workbench described in system drive is reset to zero point coordinate position, and the computer controls the first servo drive system driving institute
State laser feeler and move to original position to be welded, the laser transmitter projects visible ray simultaneously contracts through the shrink beam convex lens
Shu Weiyi beam diameters and the less visible ray of the angle of departure, are then irradiated in workpiece surface to be welded；
Step S2：The computer controls first servo drive system to drive the laser feeler, makes the laser
The radiation of visible light that transmitter is sent is in the original position of weld seam；
Step S3：The computer controls second servo drive system to drive the workbench to be moved along X-direction,
The PSD detectors receive the light of weld seam reflection by the reception convex lens, and convert analog signals into data signal
Send to the computer and store, weldment surface is gone out to the displacement of welding tip by the displacement calculation of picture point on photosurface,
And then each solder joint defocus value of face of weld is tried to achieve, then each solder joint defocusing amount is stored；
Step S4:The welding job for the defocus value control next step finally each put using weldment surface.
Technical solution of the present invention has advantages below relative to prior art：
(1) it is convenient to measure.The laser welding defocus amount determining device of technical solution of the present invention overcomes to be made in the prior art
The error for causing reading to introduce with conventional tool, realizes non-contact range measurement defocusing amount, avoids general measure for workpiece
Damage, the ranging for defocusing amount in small space can be realized, processing efficiency can be improved.
(2) precision is higher.In the laser welding defocus amount determining device of technical solution of the present invention, it is only necessary to which light can reach
The region arrived, the measurement of defocusing amount can be carried out, and measurement accuracy is not depending on measuring spacing determined by operating personnel
Precision, therefore the real-time control to defocusing amount in arbitrary plane welding process can be realized, while using the control of one-dimensional PSD circuit
Simultaneously combination algorithm is handled principle gathered data point, ensures the precision of measurement on the basis of cost-effective.
(3) reliability and versatile.In technical solution of the present invention, the visible point of light light source of laser transmitter projects is non-
Contact measuring head, generating laser shock resistance is good, stable accuracy and can normal work at high temperature, hence in so that laser welding from
Burnt amount determining device resistance to overturning is high.Simultaneously in technical solution of the present invention, lead to using CAN fieldbus as data transfer
Road, so that laser welding defocus amount determining device has, reliability is high, real-time is good, data transmission bauds is high, connection side
Just the advantages that and versatile.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Structure according to these accompanying drawings obtains other accompanying drawings.
Fig. 1 is the structural representation of laser welding defocus amount determining device of the present invention；
Fig. 2 is the assay method schematic diagram of laser welding defocus amount determining device of the present invention；
Fig. 3 is the structural representation of PSD detectors of the present invention.
Drawing reference numeral explanation：
| Label | Title | Label | Title |
| 1 | Computer | 5 | Workpiece to be welded |
| 2 | CAN fieldbus | 6 | First servo drive system |
| 3 | Controller box | 7 | Laser feeler |
| 31 | PSD detectors | 71 | Generating laser |
| 32 | Receive convex lens | 72 | Shrink beam convex lens |
| 4 | Workbench |
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only the part of the embodiment of the present invention, rather than whole embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
If it is to be appreciated that related in the embodiment of the present invention directionality instruction (such as up, down, left, right, before and after ...),
Then directionality instruction be only used for explaining relative position relation under a certain particular pose (as shown in drawings) between each part,
Motion conditions etc., if the particular pose changes, directionality instruction also correspondingly changes therewith.
If in addition, relating to the description of " first ", " second " etc. in the embodiment of the present invention, " first ", " second " etc. are somebody's turn to do
Description be only used for describing purpose, and it is not intended that instruction or implying its relative importance or implicit indicating indicated skill
The quantity of art feature.Thus, " first " is defined, the feature of " second " can be expressed or implicitly includes at least one spy
Sign.In addition, the technical scheme between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy
Based on enough realizations, the knot of this technical scheme is will be understood that when the combination appearance of technical scheme is conflicting or can not realize
Conjunction is not present, also not within the protection domain of application claims.
The present invention proposes a kind of laser welding defocus amount determining device.
Fig. 1 to Fig. 3 is referred to, in laser welding defocus amount determining device of the embodiment of the present invention, including laser feeler 7, control
Device box 3 and computer 1 processed, the inside of laser feeler 7 are installed on the vertical axis in laser feeler 7 simultaneously provided with generating laser 71
And radiation of visible light parallel to laser feeler 7 and straight down can be sent in the face of weld of workpiece 5 to be welded, controller box
3 inside are provided with PSD detectors 31 and receive weld seam reflection light, and laser feeler 7 and controller box 3 are fixedly linked, in laser feeler 7
Heart line and the center line of controller box 3 intersect；Computer 1 electrically connects with generating laser 71 and PSD detectors 31 respectively.
In the embodiment of the present invention, PSD detectors 31 include the PSD photoelectric position-sensitives element driving circuit and A/ being electrically connected to each other
D change-over circuits, PSD photoelectric position-sensitives element driving circuit receive reflection light and convert optical signals to analog signal, A/D conversions
Circuit converts analog signals into data signal and sent to computer 1.In the present embodiment, PSD detectors 31 are that one kind is based on
The position sensing device of lateral photo effect, the light spot position on photosurface can be converted into electric signal, and PSD detectors
31 are made up of semiconductor layer, ionosphere, three layers of cathode layer, and semiconductor layer is photosurface, and its both sides edge is respectively provided with a signal
Output current i1And i2, and ionosphere is thicker but make it that photoelectric transformation efficiency uprises with high sensitivity and response speed, negative electrode
Layer then draws a public electrode i in medium position0, for adding reversed bias voltage.
In the embodiment of the present invention, laser feeler 7 is moved by the drives edge different directions of the first servo drive system 61, the
One servo drive system 6 electrically connects with computer 1.Preferably, the first servo drive system 6 is provided with the driving of multiple servomotors and swashed
Flash ranging head moves along X-axis, Y-axis, Z-direction.
In the embodiment of the present invention, workpiece 5 to be welded is positioned over the top surface of workbench 4, and workbench 4 is by the second servo drive system
Driving carries out horizontal plane direction movement, and the second servo drive system is provided with multiple servomotors and drives workbench along X-axis, Y-axis side
To movement.
In the embodiment of the present invention, the bottom of laser feeler 7 is provided with shrink beam convex lens 72.
In the embodiment of the present invention, one end of controller box 3 towards weldment, which is provided with, receives convex lens 32.
In the embodiment of the present invention, computer 1 by CAN fieldbus 2 respectively with generating laser 71 and PSD detectors
31 are connected.
The present invention also proposes a kind of assay method using laser welding defocus amount determining device, comprises the following steps：
Step S1：Workpiece 5 to be welded is positioned over the top surface of workbench 4, and computer 1 controls the second servo drive system driving work
Make platform 4 and be reset to zero point coordinate position, it is to be welded that computer 1 controls the first servo drive system 6 driving laser feeler 7 to move to
Original position, generating laser 71 launch visible ray simultaneously through the shrink beam of shrink beam convex lens 72 be a beam diameter and the angle of departure it is less
Visible ray, then it is irradiated in the surface of workpiece 5 to be welded；
Step S2：Computer 1 controls the first servo drive system 6 driving laser feeler 7, makes what generating laser 71 was sent
Radiation of visible light is in the original position of weld seam；
Step S3：Computer 1 controls the second servo drive system driving workbench 4 to be moved along X-direction, PSD detectors
31 light for receiving weld seam by receiving convex lens 32 and reflecting, and convert analog signals into data signal and send to computer 1
Storage, goes out weldment surface to the displacement of welding tip, and then try to achieve face of weld by the displacement calculation of picture point on photosurface
Each solder joint defocus value, then the defocusing amount of each solder joint is stored；
Step S4:The welding job for the defocus value control next step finally each put using weldment surface.
Fig. 1 to Fig. 3 is referred to, the operation principle of laser welding defocus amount determining device of the embodiment of the present invention is：
Workpiece 5 to be welded is positioned on workbench 4 first, and controls the servomotor of the second servo drive system to drive
Dynamic workbench is reset to zero point coordinate position, and computer 1 is by controlling the servomotor of the first servo electrical machinery system 6 to drive laser
Gauge head 7 moves to original position to be welded, then opens generating laser 71 by the working interface of generating laser 71
Key light valve so that generating laser 71 sends radiation of visible light in the surface of workpiece 5 to be welded.It should be noted that pass through opening
Key light valve only makes generating laser 71 only emit beam to be irradiated in the surface of workpiece 5 to be welded, and does not start laser button hair
Project the laser beam for welding processing.And the visible ray and process that generating laser 71 is launched downwards are arranged at laser feeler 7
It is a beam diameter and all smaller visible ray of the angle of departure that the shrink beam convex lens 72 of bottom, which carry out shrink beam, the visible ray perpendicular projection
On the surface of workpiece 5 to be welded and formed a small luminous point.
Then computer 1 controls the servomotor of the first servo drive system 6 to carry out adaptability movement so that Laser emission
The visible ray light spot that device 71 is sent is in the original position of workpiece 5 to be welded.
Then the control of computer 1 swashs the first servo drive system 6 and is stopped, and simultaneous computer 1 controls the second servo to drive
Dynamic system drive workbench 4 moves in the X-axis direction from the zero point coordinate of reset so that the visible ray luminous point of generating laser 71 is equal
It can irradiate and pass through on the surface of workpiece 5 to be welded the path for needing to weld.
With the continuous movement of workbench 4, measurement medium, laser hair are used as by the use of the visible ray luminous point of generating laser 71
The spot light of emitter 71 can produce certain reflection after being irradiated in weldment surface, and the received convex lens 32 of reflection light are collected and irradiated
In on the photosurface of the semiconductor layer of PSD photoelectric position-sensitive element driving circuits, as shown in Figures 2 and 3, in the photosensitive of semiconductor layer
Have on face two electric currents of Different electrodes by when, two current output signals are respectively i1And i2, current signal i1And i2By
Interface circuit is transmitted to computer, and is calculated by computer software module, stored record image point displacement amount 01Y1, wherein displacement
Amount 01Y1Calculation formula is：
The i of above formula1And i2For caused current value on two parallel poles, L is effective work length that PSD detectors 31 are read
Degree.
Computer 1 stores displacement 01Y1Draw weldment surface to the displacement 0Y of welding tip by conversion again.Before welding
After teaching position determines, when the relative position that controller box 3 is connected to laser side first 7 is fixed,α and β
Angle be fixed value, while optical system structure position is also determined, therefore 0Y value is calculated by below equation：
α wherein in above formula is the angle between the central axis of laser feeler 7 intersects with the central axis of controller box 3, and β is
The angle between the reception visible ray of convex lens 32 and the central axis of PSD detectors 31 is received, m is weldment with receiving convex lens 32
Distance, n are the distance for receiving convex lens 32 and PSD detectors 31.
Above formula (1) is substituting in formula (2), simplification obtains weldment surface and is to the displacement 0Y of welding tip：
Then computer 1 is according to the surface of workpiece to be welded 5 and welding tip distance 0Y for being irradiated generating laser 71
Changing value is recorded and stored, and the defocus value H that face of weld is each put is represented by below equation：
H=0Y-ZY
Wherein ZY is the positional distance for focusing on mirror foci, and ZY is fixed value, such as the light path system in YAG laser
Middle ZY=20mm.
Defocusing amount H value finally is derived using 0Y values, and is recorded and is deposited according to certain rule by computer 1
The value of each solder joint defocusing amount is stored up, the defocus value then each put according to weldment surface controls the welding job of next step, from
And ensure the uniformity subsequently welded.
The laser welding defocus amount determining device of technical solution of the present invention overcome in the prior art using conventional tool and
The error for causing reading to introduce, realizes non-contact range measurement defocusing amount, avoids damage of the general measure for workpiece, Neng Goushi
The present small space of ranging in to(for) defocusing amount, can improve processing efficiency.
In the laser welding defocus amount determining device of technical solution of the present invention, it is only necessary to the region that light can reach, just
It can carry out the measurement of defocusing amount, and measurement accuracy is depending on measuring spacing accuracy determined by operating personnel, therefore can
To realize the real-time control to defocusing amount in arbitrary plane welding process, while using one-dimensional PSD circuit control principle collection number
Simultaneously combination algorithm is handled at strong point, ensures the precision of measurement on the basis of cost-effective.
In technical solution of the present invention, the visible point of light light source that generating laser 71 is launched is contactless gauge head, and laser is sent out
The shock resistance of emitter 71 is good, stable accuracy and can normal work at high temperature, hence in so that laser welding defocus amount determining device is whole
Body stability is high.Simultaneously in technical solution of the present invention, using CAN fieldbus 2 as data transmission channel, so that laser
Welding defocus amount determining device has that reliability is high, real-time is good, data transmission bauds is high, easy to connect and versatile etc.
Advantage.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the scope of the invention, it is every at this
Under the design of invention, the equivalent structure transformation made using description of the invention and accompanying drawing content, or directly/it is used in indirectly
He is included in the scope of patent protection of the present invention related technical field.
Claims (9)
- A kind of 1. laser welding defocus amount determining device, it is characterised in that including laser feeler, controller box and computer, Radiation of visible light is sent inside the laser feeler provided with generating laser to be provided with face of weld, the controller box inside PSD detectors receive weld seam reflection light, and the laser feeler and the controller box are fixedly linked, the laser feeler center Line and the controller box center line intersect；The computer is electrically connected with the generating laser and the PSD detectors respectively Connect.
- 2. laser welding defocus amount determining device as claimed in claim 1, it is characterised in that the PSD detectors include mutual The PSD photoelectric position-sensitives element driving circuit and A/D change-over circuits of electrical connection, the PSD photoelectric position-sensitives element driving circuit receive Reflection light simultaneously converts optical signals to analog signal, and it is concurrent that the A/D change-over circuits convert analog signals into data signal Deliver to the computer.
- 3. laser welding defocus amount determining device as claimed in claim 1, it is characterised in that the laser feeler is by the first servo Drive system drives edge different directions move, first servo drive system and the calculating mechatronics.
- 4. laser welding defocus amount determining device as claimed in claim 3, it is characterised in that first servo drive system is set There are multiple servomotors to drive the laser feeler to be moved along X-axis, Y-axis, Z-direction.
- 5. laser welding defocus amount determining device as claimed in claim 1, it is characterised in that workpiece to be welded is positioned over bench top Face, the workbench are driven by the second servo drive system and carry out horizontal plane direction movement, and second servo drive system is set There are multiple servomotors to drive the workbench to be moved along X-axis, Y direction.
- 6. laser welding defocus amount determining device as claimed in claim 1, it is characterised in that the laser feeler bottom is provided with contracting Beam convex lens.
- 7. laser welding defocus amount determining device as claimed in claim 1, it is characterised in that the controller box is towards weldment One end is provided with reception convex lens.
- 8. laser welding defocus amount determining device as claimed in claim 1, it is characterised in that the computer passes through CAN scenes Bus is connected with the generating laser and the PSD detectors respectively.
- 9. a kind of assay method using the laser welding defocus amount determining device as described in claim 1 to 8 is any, its feature exists In comprising the following steps：Step S1：Workpiece to be welded is positioned over the bench top, and the computer controls second servo drive system The workbench is driven to be reset to zero point coordinate position, the computer controls the first servo drive system driving is described to swash Flash ranging head moves to original position to be welded, and the laser transmitter projects visible ray simultaneously through the shrink beam convex lens shrink beam is One beam diameter and the less visible ray of the angle of departure, are then irradiated in workpiece surface to be welded；Step S2：The computer controls first servo drive system to drive the laser feeler, makes the Laser emission The radiation of visible light that device is sent is in the original position of weld seam；Step S3：The computer controls second servo drive system to drive the workbench to be moved along X-direction, described PSD detectors receive the light of weld seam reflection by the reception convex lens, and convert analog signals into data signal transmission Stored to the computer, weldment surface is gone out to the displacement of welding tip by the displacement calculation of picture point on photosurface, and then The each solder joint defocus value of face of weld is tried to achieve, then each solder joint defocusing amount is stored；Step S4:The welding job for the defocus value control next step finally each put using weldment surface.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111360457A (en) * | 2020-03-26 | 2020-07-03 | 深圳市运泰利自动化设备有限公司 | Method for eliminating height difference of product welding spot position |
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| CN111360457B (en) * | 2020-03-26 | 2022-03-22 | 深圳市运泰利自动化设备有限公司 | Method for eliminating height difference of product welding spot position |
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Application publication date: 20171201 |