EP3493942A1 - VORRICHTUNG UND VERFAHREN ZUM LASERSCHWEIßEN MIT EINEM ZUSATZWERKSTOFF IN FORM EINES SCHWEIßDRAHTES SOWIE STEUERUNGSPROGRAMM ZUR DURCHFÜHRUNG DES VERFAHRENS - Google Patents
VORRICHTUNG UND VERFAHREN ZUM LASERSCHWEIßEN MIT EINEM ZUSATZWERKSTOFF IN FORM EINES SCHWEIßDRAHTES SOWIE STEUERUNGSPROGRAMM ZUR DURCHFÜHRUNG DES VERFAHRENSInfo
- Publication number
- EP3493942A1 EP3493942A1 EP17749695.7A EP17749695A EP3493942A1 EP 3493942 A1 EP3493942 A1 EP 3493942A1 EP 17749695 A EP17749695 A EP 17749695A EP 3493942 A1 EP3493942 A1 EP 3493942A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- welding
- wire
- drive
- feed
- welding wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
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
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/211—Bonding by welding with interposition of special material to facilitate connection of the parts
-
- 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
- B23K26/0869—Devices involving movement of the laser head in at least one axial direction
- B23K26/0876—Devices involving movement of the laser head in at least one axial direction in at least two axial directions
- B23K26/0884—Devices involving movement of the laser head in at least one axial direction in at least two axial directions in at least three axial directions, e.g. manipulators, robots
-
- 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
- B23K26/1464—Supply to, or discharge from, nozzles of media, e.g. gas, powder, wire
-
- 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
- B23K26/32—Bonding taking account of the properties of the material involved
-
- 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
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
- B23K9/124—Circuits or methods for feeding welding wire
Definitions
- the invention relates to a device for laser welding with a filler material in the form of a welding wire,
- a laser beam generated by a beam source can be directed as a laser welding beam onto a weld
- the invention further relates to a weldable by a device of the type mentioned welding method and a control program for performing the method.
- Laser welding has become established as an alternative to conventional welding processes such as gas and arc welding. Depending on which type of weld is to be welded and how large the gap between the components to be joined together, is used in laser welding without or with additional material.
- a generic apparatus for laser welding is offered by the company TRUMPF (address: Johann-Maus-Strckee 2, 71254 Ditzingen, Germany) under the name "TruLaser Robot 5020.”
- TRUMPF an address: Johann-Maus-Strckee 2, 71254 Ditzingen, Germany
- a welding wire is unwound from a supply roll by means of a wire feed drive and fed to the weld in a feed direction.
- the welding wire is first delivered by the wire feed drive before the beginning of a welding operation with the leading end in the feed direction end of the wire in a welding standby position. Starting from the welding readiness position of the leading wire end of the welding wire is then adjusted during the welding process according to the progress of the weld and the associated consumption of the provided in the form of the welding wire filler material of the wire feed drive in the feed direction.
- the leading wire end of the welding wire must be arranged at the beginning of a welding operation in the welding standby position, defined relative to the welding point on the workpiece (s) concerned.
- the welding ready position of the leading wire end is determined with reference to a wire nozzle of the welding device, from which the welding wire emerges to the weld point and which the welding wire during its advancing movement together with a flexible guide tube leads, which in turn is arranged on the side of the supply roll to the side of the welding nozzle.
- the welding wire Due to movement resistances, which are opposed to the feed motion of the welding wire on the guide tube and / or on the wire nozzle in particular due to friction, it may happen that the welding wire is compressed in the interior of the wire guide and thereby placed in tension in the wire longitudinal direction. If this voltage builds up uncontrolled after completion of a welding process and before the beginning of a further welding operation, the welding wire carries out an undefined movement relative to the wire guide in the feed direction and the wire end of the welding wire leading in the feed direction reaches a position deviating from the desired welding standby position with respect to the wire nozzle and thus also with respect to the weld at the or in the context of the subsequent welding process to be welded components.
- Such a malpositioning of the wire end leading in the feed direction may impair the result of the subsequent welding operation.
- the object of the present invention is to increase the reliability of the previously known laser welding device and the previously known laser welding process. According to the invention this object is achieved by the apparatus for laser welding according to claim 1, by the welding robot according to claim 5, by the method for laser welding according to claim 6 and by the control program according to claim 11.
- the welding wire for placing the leading end in the feed direction in the welding standby position is offset by means of a positioning drive of a positioning device in an oscillating in the wire longitudinal direction movement. Due to the oscillating movement of the welding wire any stresses of the welding wire, which, for example, in the course of a previous welding process or have built up due to a repositioning after completion of the previous welding process, controlled dismantled before the leading end in the feed wire end of the welding wire relative to the wire guide or against a weld in the wire longitudinal direction is arranged in a position from which carried out the subsequent welding process with optimum results can be. An undefined position of the advancing wire end of the welding wire at the beginning of a welding operation is avoided in this way.
- the numerical control program according to the invention comprises control commands, on the basis of which the assemblies of the device according to the invention used for carrying out the method according to the invention are appropriately controlled by means of a numerical control device.
- the second drive unit of such a drive device also assumes the delivery of the wire end leading in the feed direction into the ready-to-weld position, a relatively large distance of the drive unit from the weld is possible due to the relaxed state of the welding wire during the positioning of the leading wire end. A disturbing contour generated by the drive unit otherwise in the vicinity of the weld is thereby avoided.
- the variants of the invention are characterized according to claims 3 and 8.
- the welding wire Under oscillating motion in the wire longitudinal direction, the welding wire is moved in the feeding direction to a position in which it protrudes beyond the welding standby position of the leading wire end. Subsequently, the welding wire is cut to length by means of a separating device such that the leading end of the wire in the feed direction of the welding wire is arranged uniquely in the welding standby position.
- the welding wire can first be moved over a relatively long path length exclusively in the feed direction and then oscillated in the feed direction and in the opposite direction by a smaller amount.
- the processing optics of the welding head is used in a further preferred embodiment of the invention as a separating device for generating a arranged in a defined welding readiness position wire end of the welding wire, by means of which also follows the positioning of the leading wire end of the welding wire welding operation.
- the beam source which during welding The generated by the welding head as a laser welding beam to the weld laser beam generated, also serves to generate the laser separation beam, by means of which the projecting beyond the welding readiness position welding wire is cut to length.
- the beam source can be operated either in a welding mode or in a separating mode.
- the welding head In the case of the variant of the inventive method according to claim 10 projecting beyond the welding readiness position welding wire and the separation device, optionally the welding head, moved to cut the welding wire in a separate separation position in which special precautions for the separation process to be performed can be taken.
- Fig. 1 a welding robot comprising a device for laser welding with an additional material in the form of a welding wire,
- Fig. 2 shows the welding robot according to FIG. 1 with its axes of motion
- FIG. 3 shows the welding wire on the welding robot according to FIGS. 1 and 2 inside a wire guide indicated in FIG.
- a welding robot 1 has a manipulator 2 and a welding device 3.
- the manipulator 2 comprises a base 4, a carousel 5, a rocker 6, an arm 7 and a hand 8.
- the carousel 5 is in common with the other assemblies of the manipulator 2 about a vertical axis in the direction of a double arrow I. rotatably mounted.
- the carousel 5 in turn supports the rocker 6 pivotable about a horizontal axis (double arrow II). Also pivotable about a horizontal axis of the arm 7 is relative to the Swingarm 6 (double arrow III).
- a swing-side part 7/1 of the arm 7 superimposed in the direction of a double arrow IV rotatable hand-side part 7/2 of the arm 7.
- the hand 8 At the remote from the rocker 6 end of the hand-side part 7/2 of the arm 7, the hand 8 in the direction of Double arrow V swiveling and rotatably mounted in the direction of a double arrow VI.
- the manipulator 2 therefore has 6 axes of movement.
- the welding head 9 and the welding unit near the drive unit 10 are mounted on the hand 8 of the manipulator 2.
- the welding head 9 and the welding unit near the drive unit 10 are assemblies of the welding device 3.
- the welding device 3 is a device for laser welding with a filler material in the form of a welding wire 11th
- a laser beam is generated, which is supplied to the welding head 9 via a laser light cable 13.
- a beam source 12 a conventional solid state laser is provided in the illustrated example case.
- the beam source 12 may optionally be operated in a welding mode or in a separating mode.
- a processing optics of conventional design is housed, by means of which a laser beam generated by the beam source 12 is emitted depending on the operating mode of the beam source 12 as a laser welding beam or as a laser separation beam.
- a supply of the welding wire 11 is wound on a supply roll 14 inside a housing. From the supply roll 14, the welding wire 11 is continuously unwound during a welding operation by means of a supply-side drive unit 15 and the welding station close drive unit 10 and moves in a direction extending in the wire longitudinal direction and in Figure 1 by an arrow 16 illustrated feed direction. During its movement in the feed direction 16, the welding wire 11 is guided by means of a wire guide 17, which in turn comprises a flexible guide tube in the form of a so-called "soul" 18 and a wire nozzle 19 mounted on a housing of the drive unit 10 close to the weld.
- the welding unit-near drive unit form
- the beam source 12 is turned off and the wire feed drive 20 is stopped.
- the lead in the advance direction 16 and created by the laser welding beam at the conclusion of the previous welding operation end of the wire nozzle 19 in the feed direction 16 projecting welding wire 11 relative to the wire nozzle 19 in a defined welding standby position, with which a subsequent welding process started and a optimal welding result could be achieved.
- Uncontrolled relaxation of the welding wire 11 located in the state of tension according to partial illustration (1) of FIG. 3 would mean that the leading wire end of the welding wire 11, which was initially arranged in the welding ready position, performs an undefined movement in the feed direction 16 relative to the wire nozzle 19. As a result, the leading wire end of the welding wire 11 would reach a position at which a subsequent processing of the welding wire 11 by means of the laser welding beam would not produce an optimum welding result.
- Undrawn welding wire 15 may even be advantageous. Due to the straightening of the welding wire 11, the end of the welding wire 11 leading in the advancing direction 16 moves in the direction of advance 16 in the direction of feed 16 near the machining-side end of the wire nozzle 19
- the beam source 12 is switched to the separation mode and accordingly generates a laser beam, which due to its beam power from the
- Welding head 9 is directed as a laser cutting beam on the welding wire 11 and the welding wire 11 near the wire nozzle 19 such that the cut wire end of the (relaxed) welding wire 11 is disposed in the welding standby position.
- the directed by the welding head 9 on the welding wire 11 laser cutting beam is indicated by dashed lines in the dashed framed part representation of Figure 1.
- the welding head 9 and the welding unit-near drive unit 10 with the wire nozzle 19 and the welding wire 11 arranged inside the wire guide 17 can be moved by means of the manipulator 2 into a separating position provided away from the workpiece 22 , In this case, however, it must be ensured that the movements to be carried out after cutting the welding wire 11 to arrange the welding head 9 in a new machining position on the workpiece 22 do not cause the welding wire 11 in the interior of the wire guide 17 to come under tension again As a result, in the feed direction 16 leading wire end of the welding wire 11 leaves the welding standby position.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Robotics (AREA)
- Laser Beam Processing (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016214562.2A DE102016214562B3 (de) | 2016-08-05 | 2016-08-05 | Vorrichtung und Verfahren zum Laserschweißen mit einem Zusatzwerkstoff in Form eines Schweißdrahtes sowie Steuerungsprogramm zur Durchführung des Verfahrens |
| PCT/EP2017/069818 WO2018024891A1 (de) | 2016-08-05 | 2017-08-04 | VORRICHTUNG UND VERFAHREN ZUM LASERSCHWEIßEN MIT EINEM ZUSATZWERKSTOFF IN FORM EINES SCHWEIßDRAHTES SOWIE STEUERUNGSPROGRAMM ZUR DURCHFÜHRUNG DES VERFAHRENS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3493942A1 true EP3493942A1 (de) | 2019-06-12 |
Family
ID=59569313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17749695.7A Withdrawn EP3493942A1 (de) | 2016-08-05 | 2017-08-04 | VORRICHTUNG UND VERFAHREN ZUM LASERSCHWEIßEN MIT EINEM ZUSATZWERKSTOFF IN FORM EINES SCHWEIßDRAHTES SOWIE STEUERUNGSPROGRAMM ZUR DURCHFÜHRUNG DES VERFAHRENS |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US11541478B2 (de) |
| EP (1) | EP3493942A1 (de) |
| CN (1) | CN109641320B (de) |
| DE (1) | DE102016214562B3 (de) |
| WO (1) | WO2018024891A1 (de) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112019005219T5 (de) * | 2018-10-19 | 2021-07-15 | Mitsubishi Electric Corporation | 3D-Druckvorrichtung und 3D-Druckverfahren |
| US11229956B2 (en) * | 2018-10-22 | 2022-01-25 | Mitsubishi Electric Corporation | Numerical control device, additive manufacturing apparatus, and method for controlling additive manufacturing apparatus |
| US11331755B2 (en) * | 2018-10-24 | 2022-05-17 | Mitsubishi Electric Corporation | Additive manufacturing apparatus and numerical control device |
| CN110238477B (zh) * | 2019-06-18 | 2024-04-16 | 同高先进制造科技(太仓)有限公司 | 一种用于激光钎焊的机械旋转的焊缝跟踪系统及其工作方法 |
| JP2022152070A (ja) * | 2021-03-29 | 2022-10-12 | 本田技研工業株式会社 | 溶接装置および溶接装置の制御方法 |
| CN115446457A (zh) * | 2022-10-08 | 2022-12-09 | 广东辰威机器人有限公司 | 一种激光焊接填丝一体式装置 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04344873A (ja) * | 1991-05-23 | 1992-12-01 | Babcock Hitachi Kk | ホツトワイヤ溶接装置 |
| DE4320405A1 (de) * | 1993-06-21 | 1994-12-22 | Fraunhofer Ges Forschung | Verfahren und Vorrichtung zur schlupffreien Förderung von Draht |
| JPH1128570A (ja) * | 1997-07-09 | 1999-02-02 | Babcock Hitachi Kk | プッシュプルワイヤ送給装置制御用の伸縮センサ |
| DE19732379A1 (de) * | 1997-07-25 | 1999-02-18 | Kuka Schweissanlagen Gmbh | Verfahren und Vorrichtung zum Fördern von Schweißdraht |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4441012A (en) * | 1981-12-14 | 1984-04-03 | General Electric Company | Method and apparatus for controlling heating power during the application of molten filler material to a workpiece |
| DE4412093A1 (de) * | 1994-04-08 | 1995-10-12 | Dilthey Ulrich Prof Dr Ing | Verfahren und Vorrichtung zur Steuerung einer Laserschweißmaschine |
| JP3768368B2 (ja) * | 1999-10-07 | 2006-04-19 | 日立建機株式会社 | レーザ溶接方法 |
| DE10006852C5 (de) * | 2000-02-16 | 2004-08-26 | Anders, Michael, Dr.-Ing. | Verfahren und Vorrichtung zum Fügen von Werkstückteilen mittels eines Energiestrahls, insbesondere Laserstrahls |
| DE20204395U1 (de) * | 2002-03-20 | 2002-07-11 | Kuka Schweissanlagen Gmbh | Schweißeinrichtung, insbesondere Laserschweißeinrichtung |
| JP2005081403A (ja) * | 2003-09-10 | 2005-03-31 | Hitachi Ltd | レーザ溶接装置及びその制御方法 |
| US9085041B2 (en) * | 2009-01-13 | 2015-07-21 | Lincoln Global, Inc. | Method and system to start and use combination filler wire feed and high intensity energy source for welding |
| JP5499593B2 (ja) * | 2009-09-17 | 2014-05-21 | マツダ株式会社 | レーザー溶接方法及びレーザー溶接装置 |
| JP5531743B2 (ja) * | 2010-04-12 | 2014-06-25 | 新日鐵住金株式会社 | レーザろう付け方法 |
| CN102500934B (zh) * | 2011-11-04 | 2015-01-07 | 武汉法利莱切割系统工程有限责任公司 | 激光自动断丝的工艺方法 |
| CN202804490U (zh) * | 2012-08-10 | 2013-03-20 | 深圳市通发激光设备有限公司 | 自动激光焊接机的自动送丝系统 |
| CN103817455A (zh) * | 2012-11-16 | 2014-05-28 | 通用汽车环球科技运作有限责任公司 | 用于焊接应用的自调节焊丝 |
| CN103406675B (zh) * | 2013-08-15 | 2015-09-09 | 南京中科煜宸激光技术有限公司 | 一种厚板高强钢激光电弧复合焊接方法及其夹具 |
| JP2015120179A (ja) * | 2013-12-24 | 2015-07-02 | 株式会社アマダホールディングス | レーザ溶接方法及び装置 |
| US10464168B2 (en) * | 2014-01-24 | 2019-11-05 | Lincoln Global, Inc. | Method and system for additive manufacturing using high energy source and hot-wire |
-
2016
- 2016-08-05 DE DE102016214562.2A patent/DE102016214562B3/de not_active Expired - Fee Related
-
2017
- 2017-08-04 CN CN201780049191.2A patent/CN109641320B/zh not_active Expired - Fee Related
- 2017-08-04 WO PCT/EP2017/069818 patent/WO2018024891A1/de not_active Ceased
- 2017-08-04 EP EP17749695.7A patent/EP3493942A1/de not_active Withdrawn
-
2019
- 2019-02-05 US US16/267,484 patent/US11541478B2/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04344873A (ja) * | 1991-05-23 | 1992-12-01 | Babcock Hitachi Kk | ホツトワイヤ溶接装置 |
| DE4320405A1 (de) * | 1993-06-21 | 1994-12-22 | Fraunhofer Ges Forschung | Verfahren und Vorrichtung zur schlupffreien Förderung von Draht |
| JPH1128570A (ja) * | 1997-07-09 | 1999-02-02 | Babcock Hitachi Kk | プッシュプルワイヤ送給装置制御用の伸縮センサ |
| DE19732379A1 (de) * | 1997-07-25 | 1999-02-18 | Kuka Schweissanlagen Gmbh | Verfahren und Vorrichtung zum Fördern von Schweißdraht |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO2018024891A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20190168342A1 (en) | 2019-06-06 |
| DE102016214562B3 (de) | 2017-10-19 |
| WO2018024891A1 (de) | 2018-02-08 |
| CN109641320B (zh) | 2021-09-07 |
| US11541478B2 (en) | 2023-01-03 |
| CN109641320A (zh) | 2019-04-16 |
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