EP3953098A1 - VERFAHREN ZUR ÜBERWACHUNG EINER QUALITÄT EINER ULTRASCHALLSCHWEIßUNG - Google Patents
VERFAHREN ZUR ÜBERWACHUNG EINER QUALITÄT EINER ULTRASCHALLSCHWEIßUNGInfo
- Publication number
- EP3953098A1 EP3953098A1 EP20716447.6A EP20716447A EP3953098A1 EP 3953098 A1 EP3953098 A1 EP 3953098A1 EP 20716447 A EP20716447 A EP 20716447A EP 3953098 A1 EP3953098 A1 EP 3953098A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- joining
- joining process
- value
- recorded
- measuring device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/123—Controlling or monitoring the welding process
-
- 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/002—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating specially adapted for particular articles or work
- B23K20/004—Wire 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/10—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating making use of vibrations, e.g. ultrasonic welding
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/12—Analysing solids by measuring frequency or resonance of acoustic waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
- G01N29/46—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by spectral analysis, e.g. Fourier analysis or wavelet analysis
-
- 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
- B23K2101/32—Wires
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/26—Scanned objects
- G01N2291/267—Welds
Definitions
- Ultrasonic welding can be used to join cable packages. Modern ultrasonic welding systems enable digital
- a measurement and evaluation of variables that characterize an oscillation process during the welding process enable a comprehensive and meaningful assessment of the welding process. Evaluation by means of a Fourier analysis is permitted a temporal assessment of the quality of the welding process.
- the quality here includes a purity and / or a connection quality of the ultrasonic weld.
- the object is achieved by a method for monitoring the quality of an ultrasonic welding, the vibration behavior during the joining process with regard to an actual value of the vibration frequency and / or the vibration amplitude of at least one joining partner involved in the joining process and / or the tool used in the joining process by means of an ultrasonic welding device Measurement with at least one measuring device that is used for quantification
- Vibration behavior is analyzed by means of a Fourier analysis and compared with a predetermined target value as a reference value.
- the use of a Fourier analysis can include the use of a short-term Fourier analysis, from which the time dependency of the amplitude, frequency or other variables can be determined.
- Individual window sections of the short-term Fourier analysis can make use of a suitable window function, in particular a flat-top window when calculating an amplitude, or a rectangular window when calculating a frequency or a phase.
- Zero padding and interpolation can also be used, particularly when calculating a frequency in a short-term Fourier analysis with small window sizes.
- an optical measuring device is used to quantify the mechanical vibrations during the joining process.
- an eddy current sensor and / or a laser vibrometer is used to quantify the mechanical vibrations during the joining process.
- a laser vibrometer can measure at one or more measuring points and at least one vibration parameter such.
- the deflection can be measured using various measuring methods.
- Deflection can in particular also be measured by an eddy current sensor. This can cause mechanical impairment during the welding process be avoided.
- the deflection ie also the speed of the sonotrode, is measured with a device in which an eddy current sensor is brought as close as possible to a measuring point on the sonotrode surface that is orthogonal to the
- the measuring point can in particular be located as close as possible to the coupling surface in order to obtain the most precise possible measurement of the movement in the joining zone.
- Eddy current sensor is particularly suitable for this task, as it can be attached relatively easily to different points of the oscillating system.
- the restriction for the worker is also less than when measuring with laser optical systems such as laser vibrometry.
- a combination of the two mentioned measuring methods with one another or with further measurements can increase the accuracy of the measurement.
- a measuring point on a sonotrode, an anvil, a first joining partner, in particular a first conductor and / or a second joining partner, in particular a second conductor, is used to quantify their mechanical vibrations.
- a pair of unpolluted, in particular cleaned, joining partners is used to determine the setpoint values as a reference value of a specified pair of joining partners and the quantification of the mechanical vibrations during the joining process is recorded using the measuring device
- Reference points are recorded.
- a mean can also be formed over a plurality of such reference measurements.
- a measure of the relative deviation of the detected actual values, preferably the detected oscillation amplitude and / or oscillation frequency, from the respective target value is used as a measure of the purity and thus the quality of the connection of the joining partners.
- a display device can be provided which has a
- Reference curve of an unpolluted pairing of joining partners on their Display s the display screen and superimposed on it or also depicts the current measurement curve on the same view, so that a deviation from a good weld can be recognized by a user from the deviation of the curves shown.
- the joining process is interrupted and / or the joining partners are detected as missing parts in the event of a relative deviation of the recorded actual value from the corresponding setpoint value, which is greater than a predetermined limit value.
- the limit value is a maximum of 10%, in particular a maximum of 5%.
- the frequency measured during the joining process is recorded and this is compared with a stored target frequency shift in order to determine the degree of purity of the joining partners by means of the degree of the frequency shift.
- the output is through a device for performing a method according to the first aspect with a
- Ultrasonic welding device and a measuring device which is designed to detect the vibration behavior during the joining process, that detected
- the measuring device can comprise an eddy current sensor and / or a laser vibrometer.
- Fig. 1 is a schematic representation of a device according to a
- FIG. 2 shows a flow diagram for a method according to an exemplary embodiment.
- FIG. 1 shows a schematic view of a device according to an exemplary embodiment with an ultrasonic welding device 30 with a tool with a sonotrode 31 and an anvil 32, between which joining partners 10, 20 are arranged in order to weld them together by exciting the sonotrode 31 to vibrate.
- the ultrasonic welding device 30 is provided with an optical measuring device 40, which is arranged such that a mechanical vibration behavior can be detected.
- the measuring device 40 is a laser vibrometer. Wires of a cable harness are used as joining partners 10, 20. In another
- the measuring device 40 comprises an eddy current sensor which is attached close to the sonotrode surface.
- the measuring device 40 is used to detect and quantify the mechanical
- Oscillations in this case the oscillation frequency that is established on the sonotrode 31 or on one of the joining partners 10, 20, during the joining process.
- FIG. 2 shows a flow diagram 200 for a method according to an exemplary embodiment.
- measuring device 40 records the vibration data, in particular
- the measuring device compares these analyzed vibration data in step 203 with a nominal value or with nominal reference data. If a discrepancy is found in step 205, the sample can be regarded as soiled if the discrepancy is greater than the permitted limit value.
- step 205 If in step 205 no discrepancy or a discrepancy that is smaller than the permitted limit value is found, the weld can be rated as good. List of reference symbols
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Pathology (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Immunology (AREA)
- Signal Processing (AREA)
- General Health & Medical Sciences (AREA)
- Quality & Reliability (AREA)
- Mathematical Physics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Acoustics & Sound (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019109264.7A DE102019109264C5 (de) | 2019-04-09 | 2019-04-09 | VERFAHREN UND VORRICHTUNG ZUR ÜBERWACHUNG EINER QUALITÄT EINER ULTRASCHALLSCHWEIßUNG |
| PCT/EP2020/059138 WO2020207864A1 (de) | 2019-04-09 | 2020-03-31 | VERFAHREN ZUR ÜBERWACHUNG EINER QUALITÄT EINER ULTRASCHALLSCHWEIßUNG |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3953098A1 true EP3953098A1 (de) | 2022-02-16 |
Family
ID=70154408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20716447.6A Withdrawn EP3953098A1 (de) | 2019-04-09 | 2020-03-31 | VERFAHREN ZUR ÜBERWACHUNG EINER QUALITÄT EINER ULTRASCHALLSCHWEIßUNG |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20220023978A1 (de) |
| EP (1) | EP3953098A1 (de) |
| CN (1) | CN113646122A (de) |
| DE (1) | DE102019109264C5 (de) |
| WO (1) | WO2020207864A1 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019109263B4 (de) * | 2019-04-09 | 2021-11-18 | Lisa Dräxlmaier GmbH | Verfahren, eine Messvorrichtung und eine Ultraschallschweißanlage zum zerstörungsfreien Prüfen einer Qualität einer Ultraschallschweißung |
| DE102020215071A1 (de) * | 2020-11-30 | 2022-06-02 | Volkswagen Aktiengesellschaft | Verfahren zur Herstellung eines Batterieelements |
| CN115753276B (zh) * | 2022-11-04 | 2026-01-06 | 渤海造船厂集团有限公司 | 一种薄板结构声学性能优化的工艺试验方法 |
| CN118225230A (zh) | 2022-12-21 | 2024-06-21 | 夏楼激光音响有限责任公司 | 用于检查至少一个超声焊接连接部的质量的方法,测量设备和计算机程序 |
| DE102023110711A1 (de) | 2023-04-26 | 2024-10-31 | Kromberg & Schubert Automotive Gmbh & Co. Kg | Verfahren zur kontaktlosen und zerstörungsfreien Überwachung und Auswertung eines Ultraschallschweißprozesses |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004047944A (ja) * | 2002-05-22 | 2004-02-12 | Nec Corp | 接合装置および接合の良否判別方法を有する接合方法 |
| JP2004058523A (ja) * | 2002-07-30 | 2004-02-26 | Ricoh Co Ltd | 超音波接合方法及び超音波接合装置 |
| DE102006043605B3 (de) * | 2006-09-16 | 2008-03-27 | Stapla Ultraschalltechnik Gmbh | Verfahren zur Qualitätsüberwachung beim Ultraschallschweißen |
| DE102007054626A1 (de) * | 2007-11-12 | 2009-05-14 | Hesse & Knipps Gmbh | Verfahren und Vorrichtung zum Ultraschallbonden |
| EP2145718A3 (de) * | 2008-07-16 | 2011-04-27 | Calsonic Kansei Corporation | Ultraschallschweißer und damit hergestellter verbundener Körper |
| DE102010004468A1 (de) * | 2010-01-13 | 2011-07-14 | Maschinenfabrik Spaichingen GmbH, 78549 | Verfahren und Vorrichtung zur Ultraschallbearbeitung |
| JP2014024065A (ja) * | 2012-07-24 | 2014-02-06 | Adwelds:Kk | 異常検出装置および異常検出方法 |
| DE102015120165A1 (de) * | 2015-11-20 | 2017-05-24 | Kromberg & Schubert Gmbh | Vorrichtung und ein Verfahren zur Überwachung eines Ultraschallschweißprozesses |
| US20190271669A1 (en) * | 2018-03-01 | 2019-09-05 | Battelle Memorial Institute | Characterization of ultrasonic consolidation bond quality |
-
2019
- 2019-04-09 DE DE102019109264.7A patent/DE102019109264C5/de active Active
-
2020
- 2020-03-31 EP EP20716447.6A patent/EP3953098A1/de not_active Withdrawn
- 2020-03-31 WO PCT/EP2020/059138 patent/WO2020207864A1/de not_active Ceased
- 2020-03-31 CN CN202080027423.6A patent/CN113646122A/zh not_active Withdrawn
-
2021
- 2021-10-08 US US17/497,343 patent/US20220023978A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| CN113646122A (zh) | 2021-11-12 |
| DE102019109264A1 (de) | 2020-10-15 |
| US20220023978A1 (en) | 2022-01-27 |
| DE102019109264C5 (de) | 2025-07-31 |
| WO2020207864A1 (de) | 2020-10-15 |
| DE102019109264B4 (de) | 2021-07-01 |
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