WO2013124181A1 - Procédé et dispositif destinés à conditionner des électrodes - Google Patents

Procédé et dispositif destinés à conditionner des électrodes Download PDF

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Publication number
WO2013124181A1
WO2013124181A1 PCT/EP2013/052717 EP2013052717W WO2013124181A1 WO 2013124181 A1 WO2013124181 A1 WO 2013124181A1 EP 2013052717 W EP2013052717 W EP 2013052717W WO 2013124181 A1 WO2013124181 A1 WO 2013124181A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrode
electrodes
conditioning
force
heating
Prior art date
Application number
PCT/EP2013/052717
Other languages
German (de)
English (en)
Inventor
Alfred DÖTZER
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2013124181A1 publication Critical patent/WO2013124181A1/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
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/30—Features relating to electrodes
    • B23K11/3063—Electrode maintenance, e.g. cleaning, grinding

Definitions

  • the invention relates to a method and to a conditioning device for conditioning electrodes, in particular electrodes for resistance welding or resistance soldering.
  • Resistance welding electrodes are subject to wear during their use in welding processes, so it is usually necessary to replace them after a certain number of welding operations.
  • new or reworked resistance welding electrodes often develop less heat after a change, especially if they contain tungsten or molybdenum.
  • new or reworked resistance welding electrodes often develop less heat after a change, especially if they contain tungsten or molybdenum.
  • spe ⁇ cial Einfahrvorêt for example, are determined and implemented.
  • a method according to the invention for conditioning electrodes, in particular electrodes for resistance welding or resistance soldering comprises the following steps:
  • the electrodes out first, a kind of artificial aging and other GeWiS ⁇ se material hardening, so that the electrodes have after conditioning the same properties as those electrodes which have already undergone a certain number of resistance welding operations or horrslötvor réellen.
  • the heat and power cycle, according to which the To be conditioned electrodes can be determined for example by means of empirical experiments for different types of electrodes for resistance welding and welding components or for different types of electrodes for resistance soldering and corresponding solders and to be soldered components.
  • the conditioning of the electrode is performed outside a producti ⁇ onsline, in which the electrode is subsequently used for resistance welding or resistance brazing.
  • the conditioning of the electrodes takes place outside an actual production line, in which the electrodes are used for resistance welding or for resistance soldering.
  • the actual production processes are thus not affected by the conditioning process, so that they can continue to operate undisturbed.
  • the conditioning of the electrodes it is likewise possible for the conditioning of the electrodes to be outsourced, for example, to corresponding suppliers of electrodes, wherein the suppliers are given, for example, respective heat and force cycles, according to which different types of electrodes are to be retracted. Thereby can be obtained directly applicable in welding or soldering and pre-defined ⁇ be conditioned electrodes, so that a particularly friction-free production process is ensured.
  • a component is attached, which has substantially the same material composition as welding or soldering components, which are welded or soldered thereto after the conditioning of the electrode, after which the electrode contact surface with ⁇ means of Kraftaufbring adopted with the predetermined force against the Component is pressed.
  • it is also mög ⁇ Lich, bring more of such components at the component holder or a plurality of such components to be applied to a plurality of component holders.
  • automated conditioning of electrodes it is thus possible to supply a plurality of similar components to the conditioning process, at which the conditioning of one or alternatively also a plurality of electrodes is made possible.
  • several identical components formed as sheet metal strips could be used in the
  • Component holder are attached, which are then inserted through clocked between the electrodes to be conditioned.
  • the electrodes can then each be conditioned with a component having a corresponding material composition.
  • the heating of the electrode and the force applied to the electrode contact surface is measured with a sensor device of the conditioning device.
  • the conditioning process of the electrodes can be monitored particularly well.
  • control device based on the temperature and measured by the sensor device
  • the measured temperature and force values represent the control variables, which are compared with the guide variable predetermined by the heat and power cycle continuously during the conditioning of the resistance welding electrodes, so that a permanent adjustment of the process parameters during the conditioning is carried out. This ensures that the conditioning of the electrodes can be performed in a particularly reproducible and the same lead ⁇ bend good manner.
  • the electrode is heated by means of an induction heating of the heating device to the predetermined temperature.
  • the predetermined temperature can be set particularly precisely in a particularly simple manner, so that a correspondingly good conditioning of the electrode is ensured.
  • the electrode is conductively connected to a DC or AC source of the heating device and is heated by this to the predetermined temperature.
  • the heat generated by a entspre ⁇ sponding current flow through the electrode to be conditioned by means of Joule heat. This experiences the
  • two electrodes are attached to respective electrode holders with their respective electrode pads opposite each other, wherein the component zwi ⁇ rule arranged the electrode pads and then carried out a resistance welding process or a keepsslöt- process by means of the electrodes on the component becomes.
  • this resistance welding or istslötvorgang is also repeated several times according to the predetermined heat and power cycle.
  • the invention for conditioning of the electrodes is substantially repeated several times a resistance welding operation or horrslötvorgang according to this advantageous embodiment, so in this case at least essentially the sliding ⁇ chen ratios can be adjusted, as experienced by the electrodes at an actual welding or soldering process , This can ensure a particularly exact replica of the actual welding or soldering operation and thus a particular ⁇ DERS good conditioning of the electrodes.
  • a conditioning device according to the invention for conditioning of electrodes, in particular for electrodes for resistance welding or resistance soldering comprises
  • an electrode holder for mounting an electrode; a heating means for heating the electrode to a predetermined temperature;
  • a force applying means for applying a predetermined force to an electrode contact surface of the electrode
  • control device for controlling the heating device and the force application device after a predeterminable heat and power cycle.
  • FIG. 1 is a schematic representation of a conditioning device for conditioning of electrodes with two electrode holders, in each of which an electrode is mounted, designed as an induction heater heating means for heating the electrodes and a force applicator for exerting a predetermined force on respective electrode pads of the electrodes; and 2 shows a schematic illustration of a further embodiment of the conditioning device shown in FIG. 1, which differs in that the electrodes are each connected in a conducting manner to a current source of the heating device.
  • Electrode 12 is shown in a schematic view in FIG.
  • the conditioning device 10 comprises two electrode holders 14, to each of which one of the electrodes 12 is attached. Furthermore, the conditioning device 10 comprises a heating device 16 for heating the electrodes 12.
  • the electrodes may be electrodes for resistance welding or resistance soldering.
  • the heating device 16 is designed as an induction heater, wherein respective inducers 18 are arranged on the electrodes 12 and connected to a medium-frequency or high-frequency generator 20.
  • the conditioning device 10 comprises two force application devices 22 for exerting a prescribable force on a respective electrode contact surface 24 of the electrodes 12. Furthermore, the conditioning device 10 comprises a control device 26 for controlling the heating device 16 and the force application devices 22 after a predeterminable heat and power cycle.
  • the conditioning device 10 comprises a component holder 28, to which a component 30 is attached, which has substantially the same material composition as welding components or soldering components (not shown here), which welds or brazes after the conditioning of the electrodes 12 by means of this who ⁇ the.
  • the construction of the conditioning device 10 shown here can be varied in many ways. For example, it is possible, in contrast to what is shown vertical arrangement of the electrodes to arrange them in a horizontal here not illustrated manner 12, wherein the construction ⁇ part 30 is then correspondingly vertically and not horizontally arranged ⁇ .
  • the conditioning device 10 includes the Kondi ⁇ tion istsvoriques a plurality of electrode holders 14 with a corresponding plurality of gene Erissermungseinrichtun- Kraftaufbring Rheinen 16 and 22 so that a plurality of electrodes 12 by means of the conditioning device 10 can be conditioned simultaneously.
  • the conditioning device 10 may include a plurality of component holders 28 so that multiple components 30 may be attached to the conditioning device 10 simultaneously.
  • the electrode holder 14 may be formed so flexible that a variety of electrodes can be added to it. Furthermore, the component holder 28 may also be designed so flexible that a wide variety of compo ⁇ le 30 can be added to it with different dimensions.
  • a process sequence for the conditioning of the electrode 12 will be explained by means of the invention shown Konditionie ⁇ approximately device 10th
  • the method for conditioning the electrodes 12 is carried out outside a production line, not shown here, in which the electrodes 12 are subsequently used for resistance welding or resistance soldering of welding electrodes, likewise not shown here. Soldered components are used.
  • the electrodes 12 are attached to the respective electrode holders 14 of the conditioning device 10.
  • the electrodes 12 are heated to a predetermined temperature by means of the respective inductors 18 of the heating device 16 attached thereto.
  • This temperature corresponds at least substantially to the temperature to which the electrodes get too hot 12 during a resistance welding process or during a ⁇ marsslötvorgangs he ⁇ .
  • a predetermined force is applied to the respective electrode pads 24 of the electrodes 12 by the respective force applying means 22.
  • the respective directions of movement of the electrodes 12 are indicated by the arrows 32.
  • the respective electric ⁇ dentitle vom 24 are therefore by means of the devices Kraftaufbring- 22 with the predetermined force against the component 30 pressed.
  • the heating device 16 or, in this case, the inductors 18 and the medium-frequency or high-frequency generator 20, as well as the force application devices 22 are controlled by the control device 26 after a predetermined heat and power cycle.
  • the heating of the electrodes 12 and the force applied to the electrode pads 24 force is measured.
  • the control device 26 in turn regulates the heating device 16 and the force application devices 22 on the basis of the temperature and force values measured by the sensor device and the predetermined heat and power cycle.
  • a pure control of the conditioning process is possible, for example by the inductors 18 in the present case be controlled by the control device 26 accordingly.
  • the force application devices 22 can be operated in a wide variety of ways. For example, it is possible for the force application devices 22 to be moved or actuated electrically, pneumatically, mechanically or else hydraulically. Depending on the force to be applied to the electrical 12 or on the electrode contact surfaces 24 and depending on the given boundary conditions, for example, space conditions, different forms of the force application devices 22 may be advantageous.
  • the actual welding or soldering process to which the electrodes 12 are fed after conditioning is simulated thereby.
  • the electrodes 12 thus have just such properties as they usually have electrodes 12 after they have passed through some resistance welding cycles or resistance soldering cycles.
  • the electrodes 12 can be fed directly to a resistance welding process or a resistance soldering process without further retraction without a scrap of welding or soldering components being produced.
  • FIG 2 a further embodiment of the condition- is approximately device 10 which is shown in Figure 1, shown by way ⁇ represents.
  • the conditioning device 10 shown here differs from that shown in FIG. 1 in that the heating device 16 comprises a current source 34, which is conductively connected to the two electrodes 12 with corresponding power cables 36.
  • the process for conditioning the electrodes 12 is substantially the same as already described above.
  • the only wesentli ⁇ che difference is that the electrode 12 to the power source 34, in which there may be a DC or AC power source both conductively connected, and by means of this by applying a predetermined current, for example by means of defined current pulses to be heated.
  • the heat to be achieved is generated by a corresponding current flow through the electrodes 12 to be conditioned by Joule heat.
  • the two electrodes 12 which are mounted opposite to each other at the respective electrode holders 14 with their respective electrode pads 24, supplied with current and corresponding to the marked with the arrow 32 direction of movement of the disposed between the electrode pads 24 component 30 fed and pressed to this.
  • a resistance welding operation is carried out on the component 30 by means of the electrodes 12th This welding operation is also repeated several times according to the predetermined heat and power cycle until the ge ⁇ desired conditioning of the electrodes has been established 12th Alternatively, it is also possible to carry out a resistance soldering process, wherein this resistance soldering process is also repeated several times in accordance with a predetermined heat and power cycle until the desired conditioning of the electrodes 12 has been established.
  • the advantage of performing an actual resistance welding method is that substantially the same conditions as the welding or soldering operations on the electrodes 12 to be performed in the production line can be realized.
  • a particularly good conditioning the electric ⁇ is achieved to 12 so that the properties can be adjusted to these exactly what they should have when supplied to the subsequent welding or brazing process within the production line ⁇ .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Connection Of Electric Components To Printed Circuits (AREA)

Abstract

L'invention concerne un procédé permettant de conditionner des électrodes (12), notamment des électrodes (12) destinées au soudage par résistance ou au brasage par résistance, comportant les étapes consistant à : monter une électrode (12) sur un support d'électrode (14) d'un dispositif de conditionnement (10); chauffer l'électrode (12) au moyen d'un système de chauffage (16) du dispositif de conditionnement (10) jusqu'à atteindre une température préalablement définie; exercer une force préalablement définie sur la surface de contact d'électrode (24) de l'électrode (12) au moyen d'un système d'application de force (22) du dispositif de conditionnement (10); et commander le système de chauffage (16) et le système d'application de force (22) selon un cycle de chauffe et de force préalablement défini, au moyen d'un système de commande (26) du dispositif de conditionnement (10). En outre, l'invention concerne un dispositif de conditionnement (10) permettant de conditionner des électrodes (12), notamment des électrodes (12) destinées au soudage par résistance ou au brasage par résistance.
PCT/EP2013/052717 2012-02-21 2013-02-12 Procédé et dispositif destinés à conditionner des électrodes WO2013124181A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012202612.6 2012-02-21
DE201210202612 DE102012202612A1 (de) 2012-02-21 2012-02-21 Verfahren und Vorrichtung zum Konditionieren von Elektroden

Publications (1)

Publication Number Publication Date
WO2013124181A1 true WO2013124181A1 (fr) 2013-08-29

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DE (1) DE102012202612A1 (fr)
WO (1) WO2013124181A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170304925A1 (en) * 2016-04-25 2017-10-26 GM Global Technology Operations LLC External heat assisted welding of dissimilar metal workpieces

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106956071B (zh) * 2017-04-24 2022-08-09 南京力旷机电科技有限公司 一种咖啡机加热管焊接机

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01148480A (ja) * 1987-12-03 1989-06-09 Daihatsu Motor Co Ltd スポット溶接電極の再成方法
US20040112874A1 (en) * 2002-12-11 2004-06-17 Nastasi John D. Method and system for weld process monitoring
US20110094999A1 (en) * 2009-10-26 2011-04-28 Gm Global Technology Operations, Inc. Application of surface relief to spot welding electrodes

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2739225A1 (de) * 1977-08-31 1979-03-15 Siemens Ag Verfahren zum widerstandsschweissen
DD260177A3 (de) * 1986-07-24 1988-09-21 Ve Kom Forsttechnik Waren Verfahren und vorrichtung zur vorbehandlung von widerstandspunktschweisselektroden

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01148480A (ja) * 1987-12-03 1989-06-09 Daihatsu Motor Co Ltd スポット溶接電極の再成方法
US20040112874A1 (en) * 2002-12-11 2004-06-17 Nastasi John D. Method and system for weld process monitoring
US20110094999A1 (en) * 2009-10-26 2011-04-28 Gm Global Technology Operations, Inc. Application of surface relief to spot welding electrodes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170304925A1 (en) * 2016-04-25 2017-10-26 GM Global Technology Operations LLC External heat assisted welding of dissimilar metal workpieces
US10421148B2 (en) * 2016-04-25 2019-09-24 GM Global Technology Operations LLC External heat assisted welding of dissimilar metal workpieces

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