JPS56139288A - Method and apparatus for detecting welding arc length - Google Patents
Method and apparatus for detecting welding arc lengthInfo
- Publication number
- JPS56139288A JPS56139288A JP4268380A JP4268380A JPS56139288A JP S56139288 A JPS56139288 A JP S56139288A JP 4268380 A JP4268380 A JP 4268380A JP 4268380 A JP4268380 A JP 4268380A JP S56139288 A JPS56139288 A JP S56139288A
- Authority
- JP
- Japan
- Prior art keywords
- scanning line
- welding
- horizontal scanning
- arc length
- video signal
- 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.)
- Granted
Links
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
PURPOSE: To detect accurate welding arc length, by monitoring the welding arc zone with a television camera and, at the same time, by treating the video signal of camera.
CONSTITUTION: Television camera 7 is installed on welding torch 3 so that the horizontal scanning line becomes parallel to I type narrow groove 2 of welding base material 1, and welding arc zone 6 is monitored from obliquely above. The time from the horizontal synchronizing signal to the leading of each horizontal scanning line is found by detecting the leading by setting the threshold to the video signal of horizontal scanning line of camera 7. At the same time, the horizontal scanning line corresponding to the position of center of welding center line 5 is found by detecting the peak value against the time series signal of horizontal scanning line order, and the arc length is detected by performing threshold processing on the video signal of horizontal scanning line at the scanning line or, in the vicinity of the same. By feeding back this result to the welding machine, more effective welding is developed and the weldments having superior quality are obtained.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4268380A JPS5916871B2 (en) | 1980-03-31 | 1980-03-31 | Welding arc length detection method and detection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4268380A JPS5916871B2 (en) | 1980-03-31 | 1980-03-31 | Welding arc length detection method and detection device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56139288A true JPS56139288A (en) | 1981-10-30 |
JPS5916871B2 JPS5916871B2 (en) | 1984-04-18 |
Family
ID=12642820
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4268380A Expired JPS5916871B2 (en) | 1980-03-31 | 1980-03-31 | Welding arc length detection method and detection device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5916871B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58188574A (en) * | 1982-04-30 | 1983-11-04 | Hitachi Zosen Corp | Detector for length of welding arc |
-
1980
- 1980-03-31 JP JP4268380A patent/JPS5916871B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58188574A (en) * | 1982-04-30 | 1983-11-04 | Hitachi Zosen Corp | Detector for length of welding arc |
Also Published As
Publication number | Publication date |
---|---|
JPS5916871B2 (en) | 1984-04-18 |
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