WO2017076653A1 - Dispositif de soudage à amorçage par arc tiré - Google Patents

Dispositif de soudage à amorçage par arc tiré Download PDF

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Publication number
WO2017076653A1
WO2017076653A1 PCT/EP2016/075201 EP2016075201W WO2017076653A1 WO 2017076653 A1 WO2017076653 A1 WO 2017076653A1 EP 2016075201 W EP2016075201 W EP 2016075201W WO 2017076653 A1 WO2017076653 A1 WO 2017076653A1
Authority
WO
WIPO (PCT)
Prior art keywords
welding
housing
welding device
workpiece
conductor arrangement
Prior art date
Application number
PCT/EP2016/075201
Other languages
German (de)
English (en)
Inventor
JUN. Heinz SOYER
Andreas Walter Jilg
Original Assignee
Bolzenschweisstechnik Heinz Soyer Gmbh
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 Bolzenschweisstechnik Heinz Soyer Gmbh filed Critical Bolzenschweisstechnik Heinz Soyer Gmbh
Publication of WO2017076653A1 publication Critical patent/WO2017076653A1/fr

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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
    • B23K9/00—Arc welding or cutting
    • B23K9/20—Stud 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
    • B23K9/00—Arc welding or cutting
    • B23K9/08—Arrangements or circuits for magnetic control of the arc
    • 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
    • B23K9/32—Accessories

Definitions

  • the invention relates to a welding device for welding a bolt to a workpiece by means of an arc after the Hubzündungsch dophylococcus.
  • Ground terminal 105 on the workpiece 101 and pin 102 is closed. Accordingly, at least one ground cable 100 is fastened to the workpiece 101 and is provided with a stud welding gun 103 or one which is only sketched in FIG. 7a
  • EP 1 649 962 A1 discloses a stud welding method using a radially symmetric magnetic field (SRM: studwelding in a radially symmetrical magnetic field; stud welding in a radially symmetric magnetic field).
  • SRM radially symmetric magnetic field
  • the invention is based on the object, a corresponding improved
  • a welding apparatus for welding a bolt to a workpiece by means of an arc after
  • the welding apparatus comprises a housing, means for generating a welding current, a holder supported on the housing bolt holder for holding the bolt and an electrical conductor arrangement for conducting the welding current, wherein the conductor arrangement a
  • Housing connected or resiliently mounted on the housing or designed as part of the housing.
  • the welding device further comprises a magnetic coil or a plurality of magnetic coils for generating a, acting on the arc
  • the conductor arrangement preferably extends at least partially within the magnet coil and / or outside the magnet coil. This is possible
  • the contact surface area preferably has a ring shape which extends around a longitudinal axis defined by the stud holder. This makes it possible to achieve a particularly symmetrical welding current flow. In the SRM process, this allows the current to go the shortest path at each deflection angle during the arc's orbital phase. It is further preferably the
  • the contact surface area has at least two, preferably three contact surface area portions which extend within an annular area which extends around the longitudinal axis. This has the advantage that it is particularly easy to produce a suitably symmetrical contacting even in the case of small unevenness on the surface of the workpiece.
  • the design is such that the conductor arrangement is spring-mounted parallel to a longitudinal axis defined by the stud holder relative to the housing. This is advantageous with respect to the establishment of a secure and uniform electrical contact between the conductor assembly and the
  • the design is such that the Kunststoffdale Scheme- shares are each arranged independently of each other resiliently relative to the housing resiliently movable. This makes it particularly suitable to achieve that a certain inclination of the welding device is compensated against the workpiece surface.
  • the welding device further comprises a control device for controlling the welding current, the design being such that the welding current is regulated by the control device as a function of the current flow
  • Ladder arrangement and the housing acting pressure is released. This makes it possible, in particular, to achieve that the welding process can not be initiated when the welding device presses against the workpiece surface with a contact pressure which is below a certain suitable minimum value. Also can be achieved so that a welding operation is interrupted when the contact force decreases during the welding process, so that it falls below the minimum value, for example, if the welding device accidentally from the
  • the welding apparatus further comprises a plurality of pressure sensing elements connected to the control device for detecting pressures between in each case one of the contact surface area portions and the housing.
  • the design is preferably such that through the
  • the welding current can only be switched on when each of the pressures exceeds a certain minimum value. In this way, it can be achieved that a welding process can only be triggered or released if all contact surface area portions are adequately suitably sufficiently pressed against the workpiece. This can cause a particularly reliable symmetrical contacting. Furthermore, the design is preferably such that the welding current is switched off by the control device as soon as one of the pressures falls below the specified minimum value. This allows a suitable safety shutdown to be realized.
  • the welding device further comprises a measuring arrangement connected to the control device for measuring an electrical resistance existing between the workpiece and the conductor arrangement.
  • a welding process can be initiated only when the contact resistance suitable small. Excessive contact resistance may be due to corrosion or residue on the workpiece, for example.
  • the design is preferably such that the welding current is switched off by the control device as soon as the electrical resistance exceeds a certain minimum value. This also makes it possible to realize a suitable safety shutdown.
  • the welding apparatus further comprises a ground line mechanically connected to the housing and a supply line mechanically connected to the housing for conducting the welding current, the ground line and the supply line being mechanically connected to each other.
  • a ground line mechanically connected to the housing and a supply line mechanically connected to the housing for conducting the welding current, the ground line and the supply line being mechanically connected to each other.
  • the welding device further comprises a release button or a plurality of release buttons for a two-hand control.
  • Fig. 1 is a sketch of an embodiment of an inventive
  • FIG. 2a shows an embodiment in which the conductor arrangement is formed in conjunction with an SRM magnetic field coil
  • Fig. 2b shows a corresponding embodiment with improved electrical
  • FIGS. 3 a to 3 c are sketches for different configuration options of the conductor arrangement, in each case with the course of the welding current, 4 shows a sketch of the electrical contact region, viewed normal to the longitudinal axis of the stud holder,
  • Fig. 5 is a sketch of an alternative embodiment with three
  • FIGS. 7a and 7b show sketches for a welding device with a mass
  • Fig. 1 shows a cross-sectional sketch of an embodiment of a
  • the welding device may in particular be a welding gun or a welding head.
  • the welding device is designed to connect by a welding operation, a bolt 1 with a workpiece 2 by means of an arc according to the principle of Hubzündungsch Strukturens.
  • bolt should be generally referred to here a bolt-like welding element, which corresponds to a
  • the welding device has a housing 3, the front end region of which is sketched only schematically in FIG. 1.
  • the term "front end region" of the housing 3 refers to that region of the housing 3 which faces the workpiece 2 in the welding process.
  • the welding device has means for generating a welding current for the welding operation; These means may, as indicated schematically in FIG. 1, comprise a welding current source 30.
  • the welding device has a, held on the housing 3
  • Bolt holder 5 for holding the bolt 1 on.
  • the stud holder 5 can in particular, as known per se from the prior art, be connected to a movement device for carrying out the welding operation according to the principle of the lift-and-strike welding.
  • the welding device furthermore has, in particular, a control device for controlling the welding current source 30 and the movement device, wherein the control device is designed in particular to control the welding current source 30 and the movement device by a corresponding control
  • the welding device comprises an electrical conductor arrangement 6 for conducting the welding current, wherein the conductor arrangement 6 has a contact surface area 7, which is designed to be positioned in an electrically contacting manner for carrying out the welding operation. Accordingly, it is provided that for the welding process, the conductor assembly 6 with her
  • Contact surface area 7 is brought into contact with the workpiece 2 or is pressed with a contact pressure against the workpiece 2, that between these two parts 6, 2 is made a suitable electrically conductive connection for the flow of the welding current during the welding operation.
  • the bolt holder 5 and the conductor assembly 6 are not directly electrically connected to each other.
  • the stud holder 5 can be electrically conductively connected to a first pole, for example the negative pole of the welding power source 30, via a first electrical line 31 and the conductor arrangement 6 can be connected via a second electrical line 32 to a second pole
  • a switch or button or the like may be provided in the first electrical line 31 and / or in the second electrical line 32.
  • the conductor assembly 6 is fixedly connected to the housing 3 or resiliently mounted on the housing 3 or designed as part of the housing 3.
  • the conductor assembly 6 may be designed as part of a protective gas bell 20 of the welding device. In this way, the handling during welding can be facilitated because it eliminates - in comparison to the aforementioned prior art - the need to clamp a ground terminal on the workpiece 2 before the start of the actual welding process.
  • the conditions for the welding process can be improved by said conductor arrangement 6, since in this way the ground connection can be made particularly suitable symmetrical, which is particularly advantageous with respect to the blowing effect.
  • the protective gas bell 20 and the conductor arrangement 6 may be formed in a circular ring-shaped manner with respect to a longitudinal axis L defined by the bolt holder 5. In this way, the contact surface area 7 can be correspondingly circular or with respect to the longitudinal axis L or the bolt holder. 5
  • the design may be such that the contact surface area 7 is located relatively close to the stud holder 5, that is to say a "local mass feed” is provided, as it were.
  • the radial distance a between the stud holder 5 and the conductor arrangement 6 with respect to the longitudinal axis L of the stud holder 5 is less than three times or twice a radial extent r of the stud 1, preferably smaller than the radial extent r , This is advantageous with respect to the symmetry of the electric field relationships.
  • the welding device also has a magnetic coil 8 for generating a transverse magnetic field 9 acting on the arc, for example as is known from the document mentioned above EP 1 649 962 AI is known.
  • a magnetic coil 8 for generating a transverse magnetic field 9 acting on the arc for example as is known from the document mentioned above EP 1 649 962 AI is known.
  • a plurality of magnetic coils may be provided.
  • SRM unit Also referred to as “SRM unit” for short.
  • Transition resistance between the SRM unit and the workpiece 2 as small as possible, is preferably provided, the conductor assembly 6 - as sketched in Fig. 2b - with a material having high electrical conductivity in the
  • contact area is here a portion of the conductor arrangement 6, which is located in front of a, normal to the longitudinal axis L oriented plane through which a front boundary of the solenoid coil 8 and the solenoid is fixed, in other words, a front end portion of the conductor arrangement 6, which extends in front of the magnetic coil 8 and the magnetic coils.
  • This contact region is further preferably designed from a magnetically non-conductive material. This creates a so-called magnetic
  • Air gap which has a positive influence on the SRM method in practice when welding on a magnetically conductive base material (steel), because it can be prevented in this way that the magnetic field generated by the magnetic coil 8 at a location with particularly good Contact concentrated.
  • the contact surface region 7 can be coated with a material which conducts electricity very well.
  • the conductor arrangement 6 extends predominantly inside the magnet coil 8, in the embodiment sketched in FIG. 3b, predominantly outside the magnet coil 8 and in the embodiment sketched in FIG. 3c inside and outside.
  • the contact surface area 7 is designed such that it - viewed in a cross section normal to the longitudinal axis L - the projection of the magnetic coil 8 overlapping extends. This is advantageous with respect to the formation of the above-mentioned magnetic air gap.
  • FIG. 4 is a representation in a plane normal to the longitudinal axis L shows.
  • a uniformly distributed around the circumference contacting the mass is provided.
  • the contact surface area 7 thus has a
  • FIG. 5 shows, in an analogous manner of representation, an alternative, preferred variant in which the contact surface region 7 has at least two, preferably three, in particular exactly three contact surface region portions 10 which extend around the longitudinal axis L within an annular region.
  • these justify vomerie Scheme- shares 10 are uniformly distributed over the annular area designed, so in the case of exactly three Mais vomerie Scheme- shares 10 with respect to the longitudinal axis L each defining a 120 ° angle.
  • the design is furthermore preferably such that the conductor arrangement 6 is mounted resiliently parallel to the longitudinal axis L relative to the housing 3.
  • the welding device may in particular have at least one spring element 21, for example in the form of a compression spring acting parallel to the longitudinal axis L, which, for example, is arranged between the magnetic coil 8 and the conductor arrangement 6, as indicated in FIGS. 6a and 6b.
  • Ladder assembly 6 and the workpiece 2 can be made particularly suitable. In particular, can be achieved in this way - as far as similar to the embodiment shown in Fig. 5 - a particularly uniform contact in the case of an uneven surface of the workpiece 2.
  • the welding device furthermore advantageously comprises a pressure-detecting element for detecting a pressure prevailing between the conductor arrangement 6 and the housing 3 or the magnetic coil 8, the design being such that the welding operation in FIG Depending on that by the
  • Pressure sensing element detected pressure is released.
  • the design may be such that the welding operation can only be enabled or triggered by the control device when the detected pressure exceeds a certain predetermined minimum value.
  • the welding operation is carried out when the contact pressure exerted by the welding device on the workpiece 2 is unsuitably low.
  • the spring force generated by the at least one spring element 21 must be overcome.
  • the spring force - as indicated in FIG. 6 b - must be overcome up to a stop element 28 that is fixed in position relative to the housing 3 before the welding process can be triggered.
  • the design is such that the contact area area portions 10 are each arranged to be resiliently movable relative to the housing 3 or to the magnet coil 8, in particular by means of spring a plurality of corresponding spring elements 24.
  • the welding apparatus preferably has a plurality of corresponding pressure sensing elements connected to the control means for detecting pressures between each of the contact surface area portions 10 and the housing 3, respectively
  • the design is preferably such that the welding operation can only be released by the control device if each of these detected pressures exceeds a certain corresponding minimum value.
  • a corresponding "sprung mass supply” can be achieved that the welding process can only be released or triggered when a
  • a switch 22 or - in the embodiment according to FIG. 6c - a plurality of switches 23 can accordingly be provided.
  • the sprung mass supply can be achieved in particular that a misalignment of the welding device by the at least one spring element 21 and the spring elements 24 is compensated. This is particularly advantageous in the case of a welding gun.
  • Welding device to be started. Accordingly, preferably,
  • the welding device can advantageously have a measuring arrangement connected to the control device for measuring an electrical resistance existing between the workpiece 2 and the conductor arrangement 6.
  • this measuring arrangement determines the resistance indirectly by measuring the electrical voltage. This voltage increases as soon as a contact is released.
  • the design is also such that through the
  • the welding current is turned off when the electrical resistance exceeds a certain minimum value. Even so, it can cause a safety shutdown.
  • the welding apparatus further comprises a grounding line mechanically connected to the housing 3 and a supply line mechanically connected to the housing 3 for conducting the welding current, the grounding line and the supply line being mechanically connected to each other.
  • the ground line is accordingly preferably electrically with the
  • Ladder assembly 6 connected.
  • the welding device further comprises a release button or a plurality of release buttons for a two-hand control.
  • a two-handed operation or two-handed operation with an additional release button on the welding device is advantageous with respect to the safety in the operation of the welding device and allows - even if no sprung grounding is provided, a suitably high security.
  • the described system of radial mass supply represents, in particular, a process improvement during welding with a magnetically moved arc.
  • the arc can perform the desired magnetically excited movement under particularly well-suited mass symmetry conditions.
  • the welding circuit Due to the symmetrical mass feed, the welding circuit has a constant length regardless of the current arc position.
  • the omission of a separately attached ground connection facilitates handling significantly.
  • the welding device according to the invention makes it possible, by means of a ground connection formed in an always defined manner, to achieve particularly constant conditions and thus reproducible welding results.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding In General (AREA)

Abstract

L'invenction concerne un dispositif de soudage pour le soudage d'un goujon (1) sur une pièce (2) au moyen d'un arc électrique selon le procédé de soudage à amorçage par arc tiré. Le dispositif de soudage comprend un boîtier (3), des moyens de génération d'un courant de soudage, un élément de maintien de goujon (5) supporté sur le boîtier (3) pour le maintien du goujon (1) et un ensemble conducteur électrique (6) pour la conduction du courant de soudage, l'ensemble conducteur (6) comprenant une région de surface de contact (7) qui est réalisée pour être positionnée de manière à être en contact électrique avec la pièce (2). Selon l'invention, l'ensemble conducteur (6) est relié fixement au boîtier (3) ou monté de manière élastique sur le boîtier (3) ou configuré en tant que partie du boîtier (3). Ceci présente l'avantage qu'une connexion d'une masse à la pièce (2) pour le placement du goujon (1) n'est pas nécessaire. En outre, une connexion à la masse particulièrement symétrique peut être réalisée au moyen de l'ensemble conducteur (6). Ainsi, le soufflage de l'arc peut être réduit ou pratiquement exclus et en conséquence un assemblage par soudure de qualité particulièrement élevée peut être obtenu.
PCT/EP2016/075201 2015-11-02 2016-10-20 Dispositif de soudage à amorçage par arc tiré WO2017076653A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015221384.6A DE102015221384A1 (de) 2015-11-02 2015-11-02 Hubzündungs-Schweißvorrichtung
DE102015221384.6 2015-11-02

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WO2017076653A1 true WO2017076653A1 (fr) 2017-05-11

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WO (1) WO2017076653A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3498411A1 (fr) * 2017-12-18 2019-06-19 HILTI Aktiengesellschaft Pistolet de soudage de goujons

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017211725B4 (de) 2017-07-10 2022-03-31 Bolzenschweißtechnik Heinz Soyer GmbH Verfahren zur Herstellung einer Schweißverbindung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19837141A1 (de) * 1998-08-17 2000-02-24 Moos Uwe Bolzen, insbes. ein Gewindebolzen für eine Kondensator-Stoßentladungs-Verschweißung und eine Schweißvorrichtung für diesen Bolzen
EP1649962A1 (fr) 2004-10-21 2006-04-26 Heinz Soyer Bolzenschweisstechnik GmbH Procédé et système de soudage d'un goujon avec une surface de contact conique, avec une distance de rétractation de 1 à 2.5 mm et un angle de cône de 4° +- 2.5°

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Publication number Priority date Publication date Assignee Title
GB795481A (en) * 1954-11-15 1958-05-21 Air Reduction Stud welding
US4182949A (en) * 1976-07-21 1980-01-08 The United States Of America As Represented By The Secretary Of The Navy Self-contained, portable underwater stud welder
DE2647845C3 (de) * 1976-10-22 1984-03-01 Soyer Bolzenschweißtechnik, 8034 Germering Bolzenschweißpistole
DE2713288C3 (de) * 1977-03-25 1981-11-19 Heinz Soyer-Bolzenschweißtechnik, 8034 Germering Bolzenschweißpistole
DE10221387C1 (de) * 2002-05-14 2003-07-10 Heinz Soyer Bolzenschweistechn Bolzenschweißen mit asymmetrisch erzeugtem Magnetfeld

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19837141A1 (de) * 1998-08-17 2000-02-24 Moos Uwe Bolzen, insbes. ein Gewindebolzen für eine Kondensator-Stoßentladungs-Verschweißung und eine Schweißvorrichtung für diesen Bolzen
EP1649962A1 (fr) 2004-10-21 2006-04-26 Heinz Soyer Bolzenschweisstechnik GmbH Procédé et système de soudage d'un goujon avec une surface de contact conique, avec une distance de rétractation de 1 à 2.5 mm et un angle de cône de 4° +- 2.5°
DE102004051389A1 (de) * 2004-10-21 2006-05-04 Heinz Soyer Bolzenschweisstechnik Gmbh Verfahren und System zum Verschweißen eines eine kegelartige Stirnfläche aufweisenden Bolzens mit einem Träger

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3498411A1 (fr) * 2017-12-18 2019-06-19 HILTI Aktiengesellschaft Pistolet de soudage de goujons
WO2019120781A3 (fr) * 2017-12-18 2019-08-15 Hilti Aktiengesellschaft Système de fixation
CN111278594A (zh) * 2017-12-18 2020-06-12 喜利得股份公司 栓柱焊枪
JP2021506589A (ja) * 2017-12-18 2021-02-22 ヒルティ アクチエンゲゼルシャフト スタッド溶接ガン
JP7208238B2 (ja) 2017-12-18 2023-01-18 ヒルティ アクチエンゲゼルシャフト スタッド溶接ガン
CN111278594B (zh) * 2017-12-18 2023-03-10 喜利得股份公司 栓柱焊枪

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