CN101376194B - On-line measurement compensating mechanism for laser beam welding - Google Patents
On-line measurement compensating mechanism for laser beam welding Download PDFInfo
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- CN101376194B CN101376194B CN 200810030237 CN200810030237A CN101376194B CN 101376194 B CN101376194 B CN 101376194B CN 200810030237 CN200810030237 CN 200810030237 CN 200810030237 A CN200810030237 A CN 200810030237A CN 101376194 B CN101376194 B CN 101376194B
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Abstract
The invention relates to the technical field of a laser welding device, in particular to a laser welding online measurement compensating device, which comprises a numerical control three-axis laser welding machine tool connected with a laser welding joint with two numerical control rotary axes; the laser welding joint is connected with a camera device; the position, in which the camera device is mounted, is located in a position which is a distance L from the front end of the laser welding joint; the camera device is further provided with two numerical control rotary axes. The laser welding method and the device thereof can perform the online detection for the joint edge structure and the adjustment of the welding technique parameters on a real-time basis, so that the three-dimensional joint edge structure of a composite member has scene adaptability, that is, the welding technique parameter serves the automatic change adaption function of the welded seams on a real-time basis, thereby realizing the shape control and the performance control of the laser welding on a real-time basis.
Description
Technical field
The present invention relates to the laser soldering device technical field, refer in particular to a kind of on-line measurement compensating mechanism for laser beam welding.
Background technology
In fields such as petrochemical industry, Aero-Space and military affairs, parts such as pipeline, tub often form by the welding of multi-disc parts.This type of parts are that its parts piece is the three-dimensional curve in space with the combine three-dimensional body of making space of a plurality of parts.Because the form error that this type of combiner causes in process, the deviation that combiner welding clamping causes fixedly the time, and factor such as the combiner form error that causes of the parts thermal deformation during laser weld and other, there is certain difference in the pattern of piece with the situation of theoretical design during with feasible welding, this makes on the welding position of combiner, all there is to a certain degree variation in parts piece width along the piece curve, and generally speaking the piece error can not surpass 1/10 of thickness of slab, if so implement to weld then the welding quality instability according to fixing weld seam parameter, perhaps welding quality does not reach requirement.Therefore need a kind of method of laser weld on-line measurement piece width, pad can be measured the piece pattern in advance relatively, for follow-up parameters of welding compensation provides data.
Chinese patent application number is 02151438.0, denomination of invention is: 3D shape thing welding method and device thereof, when this application has provided the 3D shape thing has been welded, utilize camera to obtain the position while welding side-play amount earlier, controller provides correction data drive control plumb joint thus and welds, and this technology does not provide at the real-time online detection of weld seam and the method for control.
Summary of the invention
The objective of the invention is to, weak point at the prior art existence, and provide a kind of can the variation to have on-the-spot adaptability to the three-dimensional piece pattern parameter of sub-assembly, be that parameters of welding has the function that butt welded seam adapts to variation in real time automatically, can realize the real-time shape control of laser weld and a kind of on-line measurement compensating mechanism for laser beam welding of Properties Control.
For achieving the above object, the present invention adopts following technical scheme: a kind of on-line measurement compensating mechanism for laser beam welding, it comprises numerical control triaxial laser weld lathe, is connected with the laser weld joint with the first numerical control rotating shaft, second numerical control rotating shaft at described numerical control triaxial laser weld lathe; Described laser weld joint is connected with cam device; The front end distance that is arranged on the leading laser weld joint in camera installation site of cam device is L, and L is determined by systematic parameter: (T
1+ T
2+ T
3) * v=L, wherein T
1Be Image Acquisition time and piece pattern calculation of parameter processing time, T
2Be welding condition computing time, T
3Be system's control response time, v is the speed of welding of laser welding system, and L is the relative mounting positions parameter of the leading plumb joint of camera; Described cam device also is provided with the 3rd numerical control rotating shaft, the 4th numerical control rotating shaft.
The invention has the beneficial effects as follows: this device comprises numerical control triaxial laser weld lathe, it is characterized in that: be connected with the laser weld joint with the first numerical control rotating shaft, second numerical control rotating shaft at described numerical control triaxial laser weld lathe; Described laser weld joint is connected with cam device; The camera installation site that is arranged on cam device is positioned at the front end of laser weld joint; Described cam device also is provided with the 3rd numerical control rotating shaft, the 4th numerical control rotating shaft, the present invention is formed image and is handled computing unit by the cam device that two numerical control rotating shafts and camera installation site be positioned at the front end of laser weld joint of having that is connected in the laser welding system, this part provides the image that is ahead of welding to handle fragment computing time, by the image calculation piece pattern parameter of camera on-line measurement, opsition dependent storage piece pattern argument sequence; Laser weld joint with two numerical control rotating shafts forms the welding compensating unit, this part is extracted the seam pattern parameter that is provided by image processing computing unit according to position while welding of living in and in real time welding condition is compensated adjustment, and realizes the shape control and the Properties Control of laser weld at last.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a detection control flow chart of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is further described:
See accompanying drawing 1, shown in the accompanying drawing 2, a kind of on-line measurement compensating mechanism for laser beam welding, it comprises numerical control triaxial laser weld lathe 1, is connected with the laser weld joint 4 with the first numerical control rotating shaft 2, second numerical control rotating shaft 3 on described numerical control triaxial laser weld lathe 1; Laser weld joint 4 is connected with cam device 5; Camera 6 installation sites that are arranged on cam device 5 are positioned at the front end distance L place of laser weld joint 4; Described cam device 5 also is provided with the 3rd numerical control rotating shaft 7, the 4th numerical control rotating shaft 8.
This device has the 3rd numerical control rotating shaft 7, the 4th numerical control rotating shaft 8 by being connected in the laser welding system 4, and the cam device 5 that camera 6 installation sites are positioned at the front end distance L place of laser weld joint 4 forms image processing computing unit, this part provides the image that is ahead of welding to handle fragment computing time, by the image calculation piece pattern parameter of camera 6 on-line measurements, opsition dependent storage piece pattern argument sequence; Laser weld joint 4 with the first numerical control rotating shaft 2, second numerical control rotating shaft 3 forms the welding compensating unit, this part is extracted the seam pattern parameter that is provided by image processing computing unit according to position while welding of living in and in real time welding condition is compensated adjustment, and realizes the shape control and the Properties Control of laser weld at last.
Laser welding system 4 with the first numerical control rotating shaft 2, second numerical control rotating shaft 3 is connected numerical control triaxial laser weld lathe 1, but the welding of implementation space piece, cam device 5 is connected in the laser welding system 4, and device has the 3rd numerical control rotating shaft 7, the 4th numerical control rotating shaft 8, can the piece pattern that pad rear space curvature changes be detected, the leading laser welding system 4 front end distance L in camera 6 installation sites provide the image that is ahead of welding to handle fragment computing time.
L is determined by systematic parameter:
(T
1+T
2+T
3)×v＝L
T wherein
1Be Image Acquisition time and piece pattern calculation of parameter processing time, T
2Be welding condition computing time, T
3Be system's control response time, v is the speed of welding of laser welding system, and L is the relative mounting positions parameter of camera 6 leading plumb joints.
Online detects and real-time method for laser welding and the device thereof of adjusting welding condition the piece pattern, three-dimensional piece pattern parameter variation to sub-assembly has on-the-spot adaptability, be that parameters of welding has the function that butt welded seam adapts to variation in real time automatically, realize the real-time shape control and the Properties Control of laser weld.
The above embodiment, it is preferred embodiments of the present invention, be not to limit the scope of the present invention,, all should be included in the patent claim of the present invention so all equivalences of doing according to the described structure of the present patent application claim, feature and principle change or modify.
Claims (1)
1. on-line measurement compensating mechanism for laser beam welding, it comprises numerical control triaxial laser weld lathe (1), it is characterized in that: be connected with at described numerical control triaxial laser weld lathe (1) have the first numerical control rotating shaft (2), the laser weld joint (4) of the second numerical control rotating shaft (3); Described laser weld joint (4) is connected with cam device (5); The front end distance that is arranged on the leading laser weld joint in camera (6) installation site (4) of cam device (5) is L, and L is determined by systematic parameter: (T
1+ T
2+ T
3) * v=L, wherein T
1Be Image Acquisition time and piece pattern calculation of parameter processing time, T
2Be welding condition computing time, T
3Be system's control response time, v is the speed of welding of laser weld joint, and L is the relative mounting positions parameter of the leading laser weld joint of camera (6); Described cam device (5) also is provided with the 3rd numerical control rotating shaft (7), the 4th numerical control rotating shaft (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810030237 CN101376194B (en) | 2008-08-19 | 2008-08-19 | On-line measurement compensating mechanism for laser beam welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810030237 CN101376194B (en) | 2008-08-19 | 2008-08-19 | On-line measurement compensating mechanism for laser beam welding |
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| Publication Number | Publication Date |
|---|---|
| CN101376194A CN101376194A (en) | 2009-03-04 |
| CN101376194B true CN101376194B (en) | 2011-02-16 |
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| CN 200810030237 Active CN101376194B (en) | 2008-08-19 | 2008-08-19 | On-line measurement compensating mechanism for laser beam welding |
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| CN (1) | CN101376194B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101905378A (en) * | 2010-08-19 | 2010-12-08 | 上海市激光技术研究所 | Fiber laser metal sheet welding device |
| US9026242B2 (en) | 2011-05-19 | 2015-05-05 | Taktia Llc | Automatically guided tools |
| US10556356B2 (en) | 2012-04-26 | 2020-02-11 | Sharper Tools, Inc. | Systems and methods for performing a task on a material, or locating the position of a device relative to the surface of the material |
| JP2014133248A (en) * | 2013-01-10 | 2014-07-24 | Mitsubishi Heavy Ind Ltd | Three dimensional laser beam machine |
| JP6968700B2 (en) | 2015-05-13 | 2021-11-17 | シェイパー ツールズ, インク.Shaper Tools, Inc. | Systems, methods, and equipment for guide tools |
| WO2018035499A2 (en) | 2016-08-19 | 2018-02-22 | Shaper Tools, Inc. | Systems, methods and apparatus for sharing tool fabrication and design data |
| CN111299835A (en) * | 2020-03-05 | 2020-06-19 | 中国汽车工业工程有限公司 | Laser flight welding online repair welding device and method |
| CN113953661B (en) * | 2021-09-18 | 2022-03-15 | 四川国芯通智能科技有限公司 | Laser repair welding machine and repair welding method thereof |
| CN113997075B (en) * | 2021-11-22 | 2023-02-21 | 湖南坤鼎数控科技有限公司 | Double-shaft-shoulder friction stir welding and milling integrated tool |
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|---|---|---|---|---|
| CN1368418A (en) * | 2002-01-30 | 2002-09-11 | 华中科技大学 | Laser cutting-welding technology and apparatus for sheet |
| CN201052570Y (en) * | 2007-06-29 | 2008-04-30 | 华中科技大学 | Real time monitoring device for three-dimensional laser welding and cutting process |
| CN201253733Y (en) * | 2008-08-19 | 2009-06-10 | 东莞华中科技大学制造工程研究院 | On-line measurement compensating mechanism for laser beam welding |
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- 2008-08-19 CN CN 200810030237 patent/CN101376194B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1368418A (en) * | 2002-01-30 | 2002-09-11 | 华中科技大学 | Laser cutting-welding technology and apparatus for sheet |
| CN201052570Y (en) * | 2007-06-29 | 2008-04-30 | 华中科技大学 | Real time monitoring device for three-dimensional laser welding and cutting process |
| CN201253733Y (en) * | 2008-08-19 | 2009-06-10 | 东莞华中科技大学制造工程研究院 | On-line measurement compensating mechanism for laser beam welding |
Non-Patent Citations (2)
| Title |
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| JP特开2004-243393A 2004.09.02 |
| JP特开2004-249305A 2004.09.09 |
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| CN101376194A (en) | 2009-03-04 |
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