EP1744848A2 - Procede de fonctionnement d'un dispositif de soudage, dispositif de soudage et chalumeau de soudage pour un dispositif de soudage de ce type - Google Patents

Procede de fonctionnement d'un dispositif de soudage, dispositif de soudage et chalumeau de soudage pour un dispositif de soudage de ce type

Info

Publication number
EP1744848A2
EP1744848A2 EP05738238A EP05738238A EP1744848A2 EP 1744848 A2 EP1744848 A2 EP 1744848A2 EP 05738238 A EP05738238 A EP 05738238A EP 05738238 A EP05738238 A EP 05738238A EP 1744848 A2 EP1744848 A2 EP 1744848A2
Authority
EP
European Patent Office
Prior art keywords
welding
vibrations
operating states
generated
operating
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.)
Ceased
Application number
EP05738238A
Other languages
German (de)
English (en)
Inventor
Andreas Burgstaller
Helmut Friedl
Manfred Wittmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fronius International GmbH
Original Assignee
Fronius International 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 Fronius International GmbH filed Critical Fronius International GmbH
Publication of EP1744848A2 publication Critical patent/EP1744848A2/fr
Ceased legal-status Critical Current

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
    • B23K9/00—Arc welding or cutting
    • B23K9/095—Monitoring or automatic control of welding parameters
    • B23K9/0953—Monitoring or automatic control of welding parameters using computing 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
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups B23K1/00 - B23K28/00
    • B23K31/12—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups B23K1/00 - B23K28/00 relating to investigating the properties, e.g. the weldability, of materials
    • B23K31/125—Weld quality monitoring
    • 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
    • B23K9/095—Monitoring or automatic control of welding parameters
    • B23K9/0956—Monitoring or automatic control of welding parameters using sensing means, e.g. optical

Definitions

  • the invention relates to a method for operating a welding device for carrying out welding processes with a welding device and a welding torch, operating states of the welding processes being recorded and vibrations which are perceptible to persons as a function of the operating states.
  • the invention further relates to a welding device for carrying out a welding process with a welding device and a welding torch connected to the welding device, and with a device for detecting operating states of the welding process, a device for generating vibrations being provided which is connected to the device for detecting the operating states, whereby perceptible vibrations can be generated depending on the operating conditions of people.
  • the invention further relates to a welding torch for a welding device for carrying out a welding process with a device for generating a vibration which can be perceived by a person, which device for generating vibrations can be connected to a device for detecting the operating parameters of the welding process.
  • a welding device for a wide variety of welding processes usually comprises an energy source, preferably a power source, possibly a supply line for a protective gas and a welding torch, which is connected to the welding device or the energy source via a hose package.
  • the hose package contains both electrical lines and any gas line as well as any liquid lines for cooling the welding torch.
  • the welding torch is manually operated by the welder and moved along the desired weld seam. Since the welding torch is usually removed from the welding machine and is connected to it via the hose package, the welder cannot carry out any welding processes shown on the welding machine during the welding process. Read more or the operating status or make certain settings.
  • WO 2004/004960 AI describes a method for operating a welding device and a welding device, wherein the recorded operating states are processed in accordance with stored regulations and compared with stored states, and messages which are automatically assigned as a function of the comparison results are transmitted to external receivers.
  • a warehouse manager can be made aware that the welding wire supply is running out and a new roll of welding wire has to be procured.
  • welder looks at the welding point or the arc generated during the welding process during the welding process, reading by the welder during the welding process is not possible.
  • welding goggles are also offered, in which text or symbols are shown. Since, as already mentioned, the welder is fully focused on the welding, such insertions are only useful for the phases before or after the actual welding process.
  • the object of the present invention is therefore to provide an above-mentioned method for operating a welding device, by means of which the welder in the case of a manual welding method or the operator of a welding robot ters or other people involved can be informed in real time about certain operating states of the welding process during the welding process.
  • the process should be carried out as simply and inexpensively as possible. Disadvantages of known methods should be reduced or avoided.
  • Another object of the present invention is also to provide a welding device and a welding torch of the type specified above, which can give certain persons involved in the welding process, in particular the welder, feedback about the operating states of the welding process.
  • the welding device or the welding torch should be constructed as simply and inexpensively as possible.
  • the object of the invention is achieved in that the arc occurring during the welding process is modulated as a function of the operating states in order to generate acoustic vibrations.
  • the arc By modulating the arc with a vibration in the audible range, the arc can be used as a loudspeaker. This has the advantage that no structural changes need to be made to the welding torch.
  • the information to the person, in particular the welder, about certain operating states of the welding process is provided only by modulating the arc.
  • the arc is modulated in particular by modulating the voltage or the current which generates the arc as a function of the operating states.
  • the object of the invention is also achieved in that mechanical vibrations are generated as a function of the operating states, which can be perceived by people.
  • certain people are given information about operating conditions in the form of vibrations during the welding process, so that this person receives feedback about the welding process carried out without having to look away from the welding point.
  • the method thus serves to obtain feedback, in real time, as to whether certain operating states have been maintained.
  • the method according to the invention can be used optimally during training, since the people receive feedback about the welding process they have carried out.
  • operating states includes all possible operating parameters relevant to the welding process, such as the welding current, the welding voltage, the arc length, the welding speed, the gas flow, the wire feed, the temperature, the cooling and much more.
  • the present method can primarily serve as an alarm if certain welding parameters or operating states exceed limit values.
  • the limit values can be absolute or relative limit values.
  • the method can also be used to give the people involved, in particular the welder, feedback that a certain welding process has been initiated or a certain welding pattern has been run through.
  • the present method for operating a welding device is mainly applicable to manual welding methods, but can also be used in automated robot welding methods.
  • a person involved in the welding process would perceive the vibrations generated.
  • the vibrations generated can on the one hand be acoustic vibrations which are generated as a function of the operating states. The acoustic vibrations are perceived by the person, in particular the welder, even when the gaze is not moved away from the welding point, as should be the case during the welding process.
  • the mechanical vibrations can be generated, for example, with the aid of an ultrasound transmitter. So that the respective person, in particular the welder, can perceive the oscillations or vibrations, the corresponding one
  • Vibration generator preferably arranged on the welding torch. It is also conceivable for the welder to wear the vibration generator on his wrist, for example, or to stand on a base that can be set in vibration. It is important that the person, in particular the welder, is informed about certain operating states by the oscillations or vibrations, without having to take his eyes off the weld.
  • the frequency and / or the amplitude of the vibrations is changed as a function of the operating states.
  • the oscillations can be coded as a function of the operating states or operating parameters.
  • the respective person is given feedback on certain operating states via the type of vibration.
  • the operating states are advantageously compared with stored regulations and the vibrations are generated as a function of these comparison results. In this way, for example, an alarm can be given when certain limit values are exceeded.
  • the stored regulations must be adapted accordingly to the respective welding processes.
  • the object according to the invention is also achieved by an above-mentioned welding device in which the device for generating vibrations is formed by a modulator for modulating the welding voltage and / or the welding current, so that the arc occurring during the welding process, depending on the operating conditions, can be perceived acoustically by people Vibrations can be modulated.
  • this variant is particularly simple and inexpensive to produce, since no structural changes need to take place on the welding torch ⁇ •, and the existing arc is used as a loudspeaker for reproducing information on the operating conditions.
  • the connection between the device for generating vibrations and the device for detecting the operating states can be established via existing lines between the welding torch and the welding device.
  • the object according to the invention is also achieved by an above-mentioned welding device, in which the device for generating vibrations is formed by a mechanical vibrator.
  • the mechanical vibration generator is advantageously on Welding torch arranged so that the welder can perceive the information about certain operating conditions by hand.
  • the mechanical vibration generator for example in the form of a cuff, on the wrist of the welder.
  • this presupposes that the welder applies the mechanical vibration generator to his wrist, for example, before the welding process begins.
  • a device for storing regulations and a device for comparing the operating states with these regulations are provided and the device for generating vibrations is connected to this comparison device.
  • certain limit values for specific operating states can be stored in the memory and an alarm, i.e. the device for generating vibrations is activated when these limit values are exceeded or undershot.
  • the device for storing regulations and the device for comparing the operating states with these regulations can be formed by an arithmetic unit, as is usually present in larger welding machines anyway.
  • connection between the device for generating vibrations and this comparison device can be wireless or wired.
  • existing lines as are usually present in the hose package between the welding torch and the welding machine, can be used.
  • devices for changing the amplitude or frequency of the generated vibrations are advantageously provided, which are connected to the detection device.
  • the amplitude and / or the frequency of the vibrations generated can be changed on the basis of the detected operating states and further information, for example, about the extent to which a limit value of an operating state is exceeded, can be transmitted to the person, in particular the welder.
  • the object according to the invention is also achieved by an above-mentioned welding torch for a welding device for carrying out a welding process, in which the device for generating vibrations is formed by a modulator for modulating the welding voltage and / or the welding current or a mechanical vibrator.
  • Figure 1 shows a welding device in a simplified schematic representation.
  • Fig. 4 is a block diagram illustrating the determination of certain operating conditions during a welding process.
  • Fig. 1 shows a welding device 1 for various welding processes, such as MIG (metal inert gas) welding process); MAG (metal active gas) welding process; TIG (tungsten inert gas) welding process; TIG (Tungsten Inert Gas) welding process or electrode welding process or the like.
  • the welding device 1 comprises a welding device 2 or an energy source with a power unit 3, a control and / or evaluation device 4.
  • a protective gas used for the welding process such as carbon dioxide, helium, argon or the like, can be arranged in a gas storage device 9 is fed to the welding torch 10 via a supply line 7.
  • a wire feed device 11 which is customary for the MIG / MAG welding process, for example, can be provided and can be controlled via the control and / or evaluation device 4.
  • the welding wire 13 is fed through a supply line device 12 fed from a storage drum 14 into the area of the welding torch 10.
  • the wire feed device 11 can also be integrated in the welding device 2.
  • the current I or the voltage U, for establishing an arc 15 between the welding wire 13 and a workpiece 16 is supplied via a welding line 17 from the power unit 3 of the welding device 2, the welding torch 10 and the welding wire 13, respectively.
  • the workpiece 16 is also connected to the power unit 3 of the welding device 2 via a further welding line 18.
  • the welding torch 10 can be supplied with cooling liquid via a cooling circuit 19.
  • the welding torch 10 is connected to the welding device 2 via a hose package 23.
  • the various lines for supplying the welding torch with electrical energy, coolant, protective gas and the like run in the hose package 23.
  • a device 5 for detecting the operating states of the welding process is usually located in the welding device 2.
  • This device 5 for detecting operating states can be formed by various measuring devices, sensors or the like for detecting, for example, the welding voltage of the welding current, the arc length, the welding speed, the gas flow of the wire feed, the temperature or the cooling (not shown).
  • the device 5 for recording operating states can be integrated in the welding device 1.
  • the device 5 for detecting the operating states is connected, for example, to the output sockets of the welding device 1, so that the welding current and the welding voltage can be received from there, for example.
  • a device 6 for generating vibrations is provided, which can be arranged, for example, in the welding device 2 or on the welding torch 10.
  • the device 6 for generating vibrations by a modulator for modulating the Welding voltage U and / or the welding current I can be formed so that the arc 15 occurring during the welding process, depending on the operating states, can be modulated with vibrations that are perceptible to people.
  • the device 6 it is also possible here for the device 6 to generate visual feedback in the form of light pulses, that is to say that the user can be given feedback on certain process states on account of different light arcs. It is possible to combine both acoustic and visual feedback. Furthermore, a device 20 for storing regulations and a device 21 for comparing the operating states with these regulations can be provided, the comparison device 21 being connected to the device 6 for generating vibrations. This connection can be wireless or wired. By modulating the welding voltage U or the welding current I, depending on certain operating states, the welder is informed acoustically and / or visually of a certain operating state of the welding process via the arc 15.
  • FIG. 2 shows a welding torch 10, in which the device 6 for generating vibrations is formed by a mechanical vibrator 24, which is integrated in the welding torch 10.
  • the welder thus receives feedback on the operating states during the welding process via the vibrations of the mechanical vibration generator 24.
  • the vibration generator 24 it is possible for the vibration generator 24 to be arranged in the welding torch 10 in such a way that the housing has a thinner wall thickness in the region of the vibration generator 24, so that the user can perceive the vibrations better.
  • the housing of the welding torch 10 is designed flexibly in the region of the vibration generator 24, that is to say that for example a partial region of the housing has a recess which is closed with a leather or fabric cover, behind which in the interior of the Welding torch 10 of the vibration generator 24 is arranged. This enables an even better transmission of vibrations to the user.
  • the mechanical vibration generator 24 can also be in the form of a bracelet or the like, which from Welder is worn, or in the form of an external loudspeaker and connected to the device 5 for detecting the operating states via a corresponding line 25.
  • This line 25 can be formed by an already existing line in the hose package 23.
  • Such an external loudspeaker is advantageously arranged in the area of the welding screen. It is also possible to control the external vibration generator 24 by radio. This solution ensures that the user can position the vibration generator 24 as best as possible on the body, so that the latter can perceive the vibrations well during the welding and at the same time is not disturbed too much.
  • a significant advantage of a solution with an external vibration generator 24 is that any welding device can be retrofitted with such a system, since only minor modifications have to be made for the connection of the external vibration generator 24 to the system. Otherwise it is only necessary to carry out a software update for the application.
  • FIG. 4 shows a block diagram to illustrate the method as it can run during a welding process.
  • a program is started, for example, which runs in a computing unit in the welding device 2.
  • the power section 3 of the welding device 2 is checked for function and, in the event of an error corresponding to block 102, a specific oscillation with a specific frequency fl and amplitude AI is output.
  • the welding voltage U is checked and, if a certain limit value is undershot in accordance with block 104, an oscillation with a specific frequency f2 and amplitude A2 is output, which can be perceived by the welder.
  • a query is made in accordance with block 105 as to whether a certain upper limit value for the welding voltage U has been exceeded. If this is exceeded, an oscillation with a frequency f3 and amplitude A3 is generated in accordance with block 106, which is perceived by the welder. If the welding voltage U is below the upper limit value, no oscillation is generated in accordance with block 107. According to block 108, the program is loaded ends.
  • Fig. 4 shows only one variant of a method according to the invention, this can be designed in a wide variety of ways for different operating conditions or welding parameters.
  • the frequency f of the oscillation could also be changed as a function of the arc length.
  • the frequency f or the tone of the vibration can thus be used to draw conclusions about a deviation in the arc length.
  • the frequency f or the tone can be selected the higher the smaller the arc length and the lower the higher the arc length.
  • the welding method according to the invention and the welding device according to the invention or the welding torch can be used both for training purposes and for quality assurance.
  • the user can be able to assign one or more parameters to the vibration generator on the input and / or output device 22 on the welding device 1.
  • the user can assign the parameter "arc length" for monitoring via the vibration generator, so that the arc length is monitored by the control device during the welding process and is activated accordingly in the event of deviations of the vibration generator.
  • the user can define upper and lower limit values so that when this is exceeded In this exemplary embodiment it is achieved, for example, that during manual welding, the user can maintain a relatively constant torch distance from the workpiece, since when the distance changes, that is to say when the arc length changes, a signal is output via the vibration generator so that the user recognizes this and can make a correction immediately.
  • the vibration generator can also be coupled to external monitoring components, that is to say, for example, in the case of a welding speed monitoring device, which, however, can also be integrated in the welding device, the vibration generator is assigned to it, so that the user can be informed via the vibration generator during welding whether he is using the vibration generator Performs welding too quickly or too slowly.
  • a welding speed monitoring device which, however, can also be integrated in the welding device, the vibration generator is assigned to it, so that the user can be informed via the vibration generator during welding whether he is using the vibration generator Performs welding too quickly or too slowly.
  • the user can be notified of faults that are to be expected shortly via the vibration generator. For example, the user can be informed that the protective gas and / or the welding wire will shortly run out or the temperature will rise to a critical range.
  • the different information is passed on via the vibration generator over different frequencies, so that a clear assignment or a clear recognition by the user is possible.
  • the user can independently determine which frequency is used for which parameter, operating state and / or fault, so that the latter can receive and recognize a clear feedback signal during the welding process.
  • the feedback signal which is generated by the vibration generator during the welding process, by a tone sequence, e.g. same tone three times in a row, over the arc tone or through a tone pattern, e.g. different tones in a row, is formed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Arc Welding Control (AREA)

Abstract

L'invention concerne un procédé de fonctionnement d'un dispositif de soudage (1) destiné à l'exécution de processus de soudage et constitué d'un appareil de soudage (2) et d'un chalumeau de soudage (10), procédé selon lequel des états d'exécution des processus de soudage sont détectés et des vibrations, perceptibles par des personnes, sont produites en fonction de ces états d'exécution. Ladite invention concerne également un dispositif de soudage (1) et un chalumeau de soudage (10) pour la mise en oeuvre dudit procédé. L'objectif de cette invention est de permettre à des personnes intervenant dans le processus de soudage, en particulier au soudeur, d'obtenir un retour d'information sur des états d'exécution spécifiques sans avoir à détourner le regard de la soudure ou de l'arc (15). A cet effet, l'arc formé lors du processus de soudage, en particulier le courant de soudage (I) et/ou la tension de soudage (U), est modulé en fonction des états d'exécution pour la production de vibrations acoustiques ou des vibrations mécaniques sont produites en fonction de ces états d'exécution. Ces vibrations sont également perçues par le soudeur, même lorsqu'il ne détourne pas son regard de la soudure ou de l'arc (15).
EP05738238A 2004-05-14 2005-05-11 Procede de fonctionnement d'un dispositif de soudage, dispositif de soudage et chalumeau de soudage pour un dispositif de soudage de ce type Ceased EP1744848A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT8542004 2004-05-14
PCT/AT2005/000157 WO2005110658A2 (fr) 2004-05-14 2005-05-11 Procede de fonctionnement d'un dispositif de soudage, dispositif de soudage et chalumeau de soudage pour un dispositif de soudage de ce type

Publications (1)

Publication Number Publication Date
EP1744848A2 true EP1744848A2 (fr) 2007-01-24

Family

ID=34966523

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05738238A Ceased EP1744848A2 (fr) 2004-05-14 2005-05-11 Procede de fonctionnement d'un dispositif de soudage, dispositif de soudage et chalumeau de soudage pour un dispositif de soudage de ce type

Country Status (6)

Country Link
US (1) US20070164006A1 (fr)
EP (1) EP1744848A2 (fr)
CN (1) CN1953838B (fr)
AT (1) AT8744U1 (fr)
DE (1) DE202005021751U1 (fr)
WO (1) WO2005110658A2 (fr)

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WO2005110658A2 (fr) 2005-11-24
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US20070164006A1 (en) 2007-07-19
CN1953838B (zh) 2010-05-05
CN1953838A (zh) 2007-04-25
AT8744U1 (de) 2006-12-15

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