WO2020210855A1 - Aide au positionnement pour un soudage laser et procédé de positionnement - Google Patents

Aide au positionnement pour un soudage laser et procédé de positionnement Download PDF

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Publication number
WO2020210855A1
WO2020210855A1 PCT/AT2020/060157 AT2020060157W WO2020210855A1 WO 2020210855 A1 WO2020210855 A1 WO 2020210855A1 AT 2020060157 W AT2020060157 W AT 2020060157W WO 2020210855 A1 WO2020210855 A1 WO 2020210855A1
Authority
WO
WIPO (PCT)
Prior art keywords
positioning
positioning aid
conductor ends
welding
aid
Prior art date
Application number
PCT/AT2020/060157
Other languages
German (de)
English (en)
Inventor
Gerhard EHGARTNER
Original Assignee
Miba Automation Systems Ges.M.B.H.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Miba Automation Systems Ges.M.B.H. filed Critical Miba Automation Systems Ges.M.B.H.
Priority to DE112020002006.1T priority Critical patent/DE112020002006A5/de
Publication of WO2020210855A1 publication Critical patent/WO2020210855A1/fr

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
    • 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
    • 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
    • B23K26/042—Automatically aligning 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
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/0426—Fixtures for other work
    • B23K37/0435—Clamps
    • B23K37/0443—Jigs
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/0056—Manufacturing winding connections
    • H02K15/0068—Connecting winding sections; Forming leads; Connecting leads to terminals
    • H02K15/0081—Connecting winding sections; Forming leads; Connecting leads to terminals for form-wound windings
    • 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
    • B23K2101/36—Electric or electronic devices
    • B23K2101/38—Conductors

Definitions

  • the application relates to a method for positioning a laser beam when welding electrical conductors, a welding method for electrical conductors, a welding device for electrical conductors and a positioning aid for laser welding of electrical conductors.
  • the object of the present application is to overcome the disadvantages of the prior art and to provide devices and methods by means of which a user is able to easily position a laser beam when welding wire ends.
  • the method according to the application comprises the steps of providing the electrical component in a holding device. Placing a positioning aid on the electrical component so that the electrical conductor ends stand through the positioning aid and the positioning aid at least partially covers the electrical component. Determine the positions of the conductor ends using a camera-based positioning device. Positioning the laser beam on the conductor ends taking into account the position data of the electrical conductor ends determined by the camera-based positioning device. This can be advantageous because a laser beam can be positioned more easily on the conductor ends to be welded, thus increasing the quality of the weld and reducing the cycle time.
  • the laser beam can be positioned on edges of the conductor ends. Also, the laser beam can hit the center of the edges WO 2020/210855 PCT / AT2020 / 060157
  • Conductor ends are positioned. This can be an advantage since it enables high quality welding.
  • the positioning aid can be placed in such a way that the holding device is at least partially covered. This can be advantageous because the determination of the positions of the conductor ends of the electrical construction can be simplified in part.
  • the electrical conductor ends can taper and the laser beam is positioned at a point in a space between the conductor ends. This can be advantageous, since a high-quality weld can be achieved even with a more complicated geometry of the electrical conductor ends.
  • a welding method for electrical conductors can comprise one of the methods of the above-mentioned aspects.
  • the welding method can further include the steps of welding the conductor ends and removing the positioning aid after the step of positioning. This can be advantageous because the welding process can be simplified and shortened because positioning can be achieved more quickly and reliably.
  • the welding method can comprise the step of pivoting the holding device after the step of welding and before the step of removing.
  • This can be an advantage because any welding spatter falls off the positioning aid and cannot get into the electrical component. When pivoting, this falling off of the weld spatter can be caused by a vibration from e.g. the holding device are supported.
  • a welding arrangement for conductor ends of an electrical component can comprise a holding device, a laser source and a positioning aid. This can be advantageous because the welding arrangement can be used to carry out a welding process in a more time-efficient and thus more cost-effective manner.
  • the holding device in the welding arrangement can be pivotable. This can be an advantage because after the WO 2020/210855 PCT / AT2020 / 060157
  • the holding device can be pivoted and any weld spatter on the holding device and / or positioning aid fall off and thus cannot get into the electrical component.
  • the holding device in the welding arrangement can be provided with a vibration device. This can be advantageous because it allows any weld spatter to be removed more easily from the holding device or the positioning aid.
  • a positioning aid for the laser welding of conductor ends of an electrical component has at least one conductor opening.
  • a conductor breakthrough is a hole in the positioning aid. This can be advantageous because a strong contrast between the conductor ends and the positioning aid is thus possible and positioning on the conductor ends is simplified.
  • the positioning aid is used, at least one end of the conductor is broken through a conductor.
  • the dimensions of the conductor breakthrough are preferably chosen so that the respective conductor end stands with no or only a very small gap between the conductor end and the positioning aid through the positioning aid. There are play, transition or oversize fits between the conductor breakthrough and the corresponding end of the conductor in question.
  • the positioning aid can be made from a film.
  • This film can be made from at least one of the following materials: metal, plastic, organic material, ceramic material and fiber material. This can be an advantage because the optimal material or the optimal material pairing can be selected.
  • the positioning aid can at least partially be made of paper. This can be advantageous because the positioning aid can be machined, for example, to create the at least one conductor opening, and the positioning aid can generally be produced inexpensively.
  • a positioning aid can further comprise at least one of embossings, perforations and reinforcements. This can WO 2020/210855 PCT / AT2020 / 060157
  • Reinforcements can e.g. Corrugations (embossings) or doubled material, which give the positioning aid increased stability in certain areas. Embossing and perforations can make it easier to remove the positioning aid because it can be torn or torn in a controlled manner and can thus be removed more easily and quickly. Embossing can also bring the positioning aid into a certain shape for a possible special use and / or form markings.
  • the positioning aid can furthermore comprise a handle.
  • This can be an advantage because the positioning aid is easier to use. This handling can be done manually and / or by machine.
  • the positioning aid can furthermore have at least one marking.
  • the positioning aid can be used e.g. can be more easily aligned and / or at least one of can be detected, picked up and handled by a device.
  • the at least one marking can e.g. printed, lasered or embossed.
  • the positioning aid can furthermore comprise a coating on at least one of the surfaces of the positioning aid. This can be an advantage, because e.g. an embedding of any weld spatter he can be enough or a jumping of weld spatter can be inhibited. Overall, the positioning aid can be made more resistant by a coating.
  • the positioning aid can be at least one of fire retardant, self-extinguishing, and embedding weld spatter. This can have the advantage that any weld spatter cannot jump further, but is picked up by the positioning aid. It can also be advantageous if the positioning aid cannot catch fire or if a fire extinguishes itself. The whole process can thus be made more reliable.
  • FIG. 1 shows an electrical component with conductor ends in a holding device with a separate and placed positioning aid, and a detailed view of the placed positioning aid;
  • FIG. 4 shows a perspective view of the camera-based positioning device when determining the position of electrical conductor ends
  • FIG. 6 shows a further perspective schematic view of alternative conductor ends.
  • parts A and B show a positioning aid 1, a holding device 4, an electrical component 2 and a holding device 4.
  • the positioning aid 1 is shown above the holding device 4, into which the electrical component 2 with its multiplicity of electrical conductor ends 3 is inserted.
  • the positioning aid 1 has a number of conductor openings 9 corresponding in arrangement and number to the electrical conductor ends 3.
  • the number and arrangement of the electrical Leinic 3, and the shape of the electrical component 2 is purely exemplary and arbitrary.
  • part B of FIG. 1 the electrical component 2 is shown in the holding device 4 and with the positioning aid 1 placed thereon.
  • the conductor ends 3 are through the positioning aid 1 and in particular through the conductor openings 9 through.
  • the positioning aid 1 covers the electrical component 2 completely.
  • the positioning aid 1 could also at least partially cover the holding device 4.
  • the conductor ends 3 protrude through the positioning aid 1 and the positioning aid 1 is still fitted into the holding device 4 or adapted in its dimensions to the holding device 4.
  • a clear contrast is created between the positioning aid 1 and the conductors 3, since the complex interior of the electrical component 2 is covered or hidden by the positioning aid 1 (see comparison of part A of FIG. 1 with part B of FIG. 1).
  • a pair of conductor ends 3 is shown schematically, which is through the one of the Lei ter homemadebrichen 9 of the positioning aid 1 is.
  • the conductor breakthrough 9 is made recognizable by the edges 7 resulting from the conductor ends 3.
  • the conductor ends 3 are preferably free of play or gap with respect to the conductor openings 9. In other words, the conductor ends 3 fit exactly and without play or gap in the respective conductor opening 9. Clearance is therefore preferred, as a camera-based positioning device Can recognize or detect edges of the electrical conductor ends 3 more easily.
  • the method with a gap between the electrical conductor ends 3 and the conductor openings 9 is also possible in principle. The method is detailed below.
  • a camera-based positioning device (not shown) can detect the position of the conductor ends 3 and thus determine the positioning point 6 for the positioning of a laser beam 5.
  • the positioning point 6 is located in the middle of the edge 7, wel surface is formed by the touching conductor ends 3.
  • the edge 7 in FIG. 2 likewise represents the course of the weld seam to be executed.
  • Fig. 3 a variant of the electrical conductor ends 3 is shown.
  • the conductor ends 3 taper, for example in the form of truncated pyramids (see sectional view B). Any other tapered shape is also possible.
  • the conductor ends 3 stand through the positioning aid 1 and in particular through the conductor opening 9, which is represented by its edges 7 in FIG. 3.
  • the laser beam 5 is positioned at a positioning point 6 with the aid of the camera-based positioning system and the detection of the electrical conductor ends 3 due to the increased contrast with respect to the positioning aid 1.
  • the positioning point 6 is in a space above the edge 7 between the electrical conductor ends 3 and thus not directly on the edge 7, as in FIG. 2.
  • the end points 8 are also not directly on the edge 7 located, but also above on a straight line which runs parallel above the edge 7 and through the positioning point 6 (see B).
  • the end points 8 can be shifted inwardly in the direction of the positioning point 6 with respect to the outer contour or outer edge of the pair of electrical conductor ends 3, or alternatively, they can be perpendicular above the intersection of the edge 7 with the outer edge of the pair of electrical conductor ends 3.
  • the laser beam 5 is moved parallel or along the edge 7 (see arrow in FIG. 3A) in order to weld the electrical conductor ends 3 in an area around the edge 7.
  • a welding device comprises a laser unit which is operatively connected to a camera-based positioning device.
  • the electrical component 2 is introduced into the holding device 4 and fixed there.
  • the positioning aid 1 is placed on the electrical component 2 so that the electrical conductor ends 3 of the electrical component 2 protrude through the conductor openings 9 of the positioning aid 1.
  • the positioning aid can at least partially cover the electrical component 2 and / or the holding device 4.
  • the at least partial covering of the electrical component 2 in the area of the conductor ends 3 results in an increased contrast between the conductor ends 3 and the area of the positioning aid 1 around the respective conductor opening 9.
  • the camera-based positioning device can detect the external cracks or outer edges of the conductor ends 3 or the pair of conductor ends 3 more easily and position the laser beam 5 on the conductor ends 3 based on this determined position data of the conductor ends 3.
  • the conductor ends 3 are welded by the laser beam 5 in the area of their contact (see above). Any weld spatter resulting from the welding can be prevented by the positioning aid 1 from penetrating or falling into the electrical component 2 and / or the holding device 4.
  • the positioning aid 1 is preferably reusable and hardly inflammable or can embed weld spatter so that it cannot jump any further.
  • the holding device 4 can be designed to be pivotable, so that before the positioning aid 1 is removed, weld spatter located on the same or on the holding device 4 can fall off by pivoting and / or vibration of the holding device 4.
  • FIG. 4 shows a plan view of a camera-based positioning device on two pairs of electrical conductor ends 3 which protrude through the positioning aid 1.
  • the two pairs of electrical conductor ends 3 are each per pair through a conductor opening 9 through the positioning aid 1.
  • the electrical conductor ends 3 have an irregular surface and without the positioning aid 1 Ren the outer edges of the individual electrical conductor ends 3 would be very difficult to detect.
  • position lines 10 of the camera-based positioning device can be seen. These are set by the camera-based positioning device based on the contrast differences between the two electrical conductor ends 3 and the positioning aid 1, as can be seen in FIG. 4.
  • the camera-based positioning device can direct the laser beam, e.g. 2 and 3, place on the positioning point, since this lies on the position line 10, which coincides with the edge 7.
  • Fig. 5 four and three electrical conductor ends 3 are shown in A and B.
  • the laser beam 5 is not moved parallel to the edges 7 between the individual electrical conductor ends 3, but perpendicular or WO 2020/210855 PCT / AT2020 / 060157
  • FIG. 6 shows a further variant, similar to the variant in FIG. 5.
  • the electrical conductor ends 3 are different in length, Lich. Shown are two electrical conductor ends 3 that are longer than the respective outer electrical conductor ends 3.
  • the electrical conductor ends 3 can have any arrangement with regard to their length (for example with four electrical conductor ends 3, the respective outer electrical conductor ends 3 be longer, or the electrical conductor ends 3 can be arranged alternately with regard to their length).
  • the travel path (arrow) of the laser beam (not shown) is oriented at the positioning points 6, which are positioned as described in connection with FIG. 5.
  • the travel path (arrow) here does not run through the positioning points 6, but below (see FIG. 6 B) on a parallel to a straight line through the positioning points 6 (similar to FIG. 3).
  • the end points 8 do not lie on one of the outer edges of the respective outer electrical conductor end 3 (as for example in FIG. 5) but rather in the middle and above the respective outer electrical conductor end 3, as can be seen in FIG. 6B is.
  • the distance at the level of a respective laser optics above the electrical conductor ends 3 can be selected as desired in the above methods, taking into account the working or focus distance.
  • the focus or the focal plane lies in the positioning point 6, in FIGS. 3 and 6 the focal plane is lower than the highest elevation of the electrical conductor ends 3.
  • the focal plane WO 2020/210855 PCT / AT2020 / 060157 10
  • the distance at the level of a respective laser optics can be freely selected depending on the focus distance and e.g. the focus level on the surface of at least one of the electrical conductor ends 3 or the focus plane can be placed such that it intersects at least one electrical conductor end 3.
  • the above explanations show possible design variants, whereby it should be noted at this point that the invention is not limited to the specifically shown design variants dersel ben, but rather various combinations of the individual design variants with one another are possible and this possible variation based on the teaching on technical action due to the present invention is within the ability of a person skilled in this technical field.

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Laser Beam Processing (AREA)

Abstract

L'invention concerne un procédé de positionnement d'un faisceau laser lors du soudage de conducteurs électriques, un procédé de soudage pour des conducteurs électriques, un dispositif de soudage pour des conducteurs (3) électriques et une aide au positionnement (1) pour le soudage laser de conducteurs électriques.
PCT/AT2020/060157 2019-04-17 2020-04-16 Aide au positionnement pour un soudage laser et procédé de positionnement WO2020210855A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112020002006.1T DE112020002006A5 (de) 2019-04-17 2020-04-16 POSITIONIERHILFE FÜR LASERSCHWEIßEN UND POSITIONIERVERFAHREN

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50347/2019A AT522547A1 (de) 2019-04-17 2019-04-17 Positionierhilfe für Laserschweißen und Positionierverfahren
ATA50347/2019 2019-04-17

Publications (1)

Publication Number Publication Date
WO2020210855A1 true WO2020210855A1 (fr) 2020-10-22

Family

ID=70856967

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT2020/060157 WO2020210855A1 (fr) 2019-04-17 2020-04-16 Aide au positionnement pour un soudage laser et procédé de positionnement

Country Status (3)

Country Link
AT (1) AT522547A1 (fr)
DE (1) DE112020002006A5 (fr)
WO (1) WO2020210855A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020116202A1 (de) 2020-06-19 2021-12-23 Trumpf Laser- Und Systemtechnik Gmbh Verfahren zum Fügen wenigstens zweier Hairpins
DE102021001980A1 (de) 2021-04-15 2022-10-20 Mercedes-Benz Group AG Verfahren zum Fügen von Hairpins durch Laserschweißen
DE102022003824A1 (de) 2022-10-17 2022-12-01 Mercedes-Benz Group AG Vorrichtung zum Fügen von länglichen Bauteilbereichen von Wicklungselementen wenigstens einer Wicklung einer elektrischen Maschine sowie Verwendung einer solchen Vorrichtung
DE102022003823A1 (de) 2022-10-17 2022-12-01 Mercedes-Benz Group AG Verfahren zum Verbinden von zwei stiftartigen Bauteilbereichen
EP4246784A4 (fr) * 2021-03-18 2024-05-29 Aisin Corp Procédé de production d'un stator pour une machine électrique rotative

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060141874A1 (en) * 2002-10-07 2006-06-29 Romaric Lenoir Arrangement for welding ends of electrical conductor segment pairs of a rotating electrical machine winding
WO2009116186A1 (fr) * 2008-03-17 2009-09-24 フェトン株式会社 Appareil de soudage laser
JP2015171260A (ja) * 2014-03-07 2015-09-28 平田機工株式会社 位置決め部材、位置決め装置及びステータの製造方法
US20160308413A1 (en) * 2015-04-16 2016-10-20 MAGNETI MARELLI S.p.A. Electric machine having a stator winding with rigid bars

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013201298A1 (de) * 2013-01-28 2014-07-31 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren und Vorrichtung zur Herstellung eines Halbleiterbauelements
CN105075034B (zh) * 2013-02-22 2018-04-24 古河电气工业株式会社 端子制造装置及焊接装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060141874A1 (en) * 2002-10-07 2006-06-29 Romaric Lenoir Arrangement for welding ends of electrical conductor segment pairs of a rotating electrical machine winding
WO2009116186A1 (fr) * 2008-03-17 2009-09-24 フェトン株式会社 Appareil de soudage laser
JP2015171260A (ja) * 2014-03-07 2015-09-28 平田機工株式会社 位置決め部材、位置決め装置及びステータの製造方法
US20160308413A1 (en) * 2015-04-16 2016-10-20 MAGNETI MARELLI S.p.A. Electric machine having a stator winding with rigid bars

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020116202A1 (de) 2020-06-19 2021-12-23 Trumpf Laser- Und Systemtechnik Gmbh Verfahren zum Fügen wenigstens zweier Hairpins
EP4246784A4 (fr) * 2021-03-18 2024-05-29 Aisin Corp Procédé de production d'un stator pour une machine électrique rotative
DE102021001980A1 (de) 2021-04-15 2022-10-20 Mercedes-Benz Group AG Verfahren zum Fügen von Hairpins durch Laserschweißen
DE102022003824A1 (de) 2022-10-17 2022-12-01 Mercedes-Benz Group AG Vorrichtung zum Fügen von länglichen Bauteilbereichen von Wicklungselementen wenigstens einer Wicklung einer elektrischen Maschine sowie Verwendung einer solchen Vorrichtung
DE102022003823A1 (de) 2022-10-17 2022-12-01 Mercedes-Benz Group AG Verfahren zum Verbinden von zwei stiftartigen Bauteilbereichen
WO2024083655A1 (fr) 2022-10-17 2024-04-25 Mercedes-Benz Group AG Dispositif d'assemblage de zones de composants allongés d'éléments d'enroulement d'au moins un enroulement d'une machine électrique, et utilisation d'un tel dispositif
WO2024083656A1 (fr) 2022-10-17 2024-04-25 Mercedes-Benz Group AG Procédé de connexion de deux régions de composant en forme de broche

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AT522547A1 (de) 2020-11-15

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