JPS5588988A - Ultrasonic detecting device for resistance welding - Google Patents
Ultrasonic detecting device for resistance weldingInfo
- Publication number
- JPS5588988A JPS5588988A JP16321978A JP16321978A JPS5588988A JP S5588988 A JPS5588988 A JP S5588988A JP 16321978 A JP16321978 A JP 16321978A JP 16321978 A JP16321978 A JP 16321978A JP S5588988 A JPS5588988 A JP S5588988A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- time difference
- signal
- works
- joining part
- 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.)
- Pending
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
PURPOSE: To realize excellent welding, by comparing the propagation time of ultrasonic wave passing through the joining part with that before heating and melting of the joining part, and stopping the welding current when the time difference thereof exceeds a specified value.
CONSTITUTION: Works 1a, 1b are pressure-welded by means of electrodes 3a, 3b, and a pulse signal is generated from a gate pulse generator 6. An ultrasonic wave from an ultrasonic oscillator 2a passes through the joining part of the works 1a, 1b, and is detected, and the detected signal is fed in a gate circuit 11. Only the pulse components in the ultrasonic signal are inputted into a time difference measuring circuit 13. At this time, there is not time difference in the outputs of the gate circuit 11 and delay circuit 14, so that the output of the time difference measuring circuit 13 is zero. Then, when a signal is applied to a welding current control circuit 4, the works 1a, 1b are energized, heated and melted, thus producing a nugget 16. As the diameter of this nugget 16 becomes larger, the time difference in the output signals of the gate circuit 11 and delay circuit 14 becomes wider, and the output level of the time difference measuring circuit 13 also increases. When this output level reaches a specified value, a power supply stop signal is applied to the welding current control circuit 4 from a comparator circuit 15, so that power supply is stopped.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16321978A JPS5588988A (en) | 1978-12-27 | 1978-12-27 | Ultrasonic detecting device for resistance welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16321978A JPS5588988A (en) | 1978-12-27 | 1978-12-27 | Ultrasonic detecting device for resistance welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5588988A true JPS5588988A (en) | 1980-07-05 |
Family
ID=15769563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16321978A Pending JPS5588988A (en) | 1978-12-27 | 1978-12-27 | Ultrasonic detecting device for resistance welding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5588988A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4711984A (en) * | 1987-03-09 | 1987-12-08 | General Motors Corporation | Ultrasonic method and apparatus for spot weld control |
| JPH01118375A (en) * | 1987-10-31 | 1989-05-10 | Honda Electron Co Ltd | Method and equipment for spot welding |
| JP2010038669A (en) * | 2008-08-04 | 2010-02-18 | Honda Motor Co Ltd | Method and device for detecting interface position of molten part |
| WO2012120351A1 (en) * | 2011-03-04 | 2012-09-13 | Toyota Jidosha Kabushiki Kaisha | Resistance welding method, resistance-welded member, resistance welder and control apparatus thereof, control method and control program for resistance welder, and resistance welding evaluation method and evaluation program |
| JP2022036921A (en) * | 2020-08-24 | 2022-03-08 | ティーイー コネクティビティ ジャーマニー ゲゼルシャフト ミット ベシュレンクテル ハフツンク | Contact device having measurement device for measuring contact state of contact device by acoustic signal |
-
1978
- 1978-12-27 JP JP16321978A patent/JPS5588988A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4711984A (en) * | 1987-03-09 | 1987-12-08 | General Motors Corporation | Ultrasonic method and apparatus for spot weld control |
| JPH01118375A (en) * | 1987-10-31 | 1989-05-10 | Honda Electron Co Ltd | Method and equipment for spot welding |
| JP2010038669A (en) * | 2008-08-04 | 2010-02-18 | Honda Motor Co Ltd | Method and device for detecting interface position of molten part |
| WO2012120351A1 (en) * | 2011-03-04 | 2012-09-13 | Toyota Jidosha Kabushiki Kaisha | Resistance welding method, resistance-welded member, resistance welder and control apparatus thereof, control method and control program for resistance welder, and resistance welding evaluation method and evaluation program |
| JP2022036921A (en) * | 2020-08-24 | 2022-03-08 | ティーイー コネクティビティ ジャーマニー ゲゼルシャフト ミット ベシュレンクテル ハフツンク | Contact device having measurement device for measuring contact state of contact device by acoustic signal |
| US12007443B2 (en) | 2020-08-24 | 2024-06-11 | Te Connectivity Germany Gmbh | Contact arrangement having a measuring device for determining a contacting state of the contact arrangement by means of an acoustic signal |
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