JPS56139288A - Method and apparatus for detecting welding arc length - Google Patents

Method and apparatus for detecting welding arc length

Info

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
Application number
JP4268380A
Other languages
Japanese (ja)
Other versions
JPS5916871B2 (en
Inventor
Tsutomu Fujita
Yukio Hioki
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.)
Hitachi Zosen Corp
Original Assignee
Hitachi Zosen Corp
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 Hitachi Zosen Corp filed Critical Hitachi Zosen Corp
Priority to JP4268380A priority Critical patent/JPS5916871B2/en
Publication of JPS56139288A publication Critical patent/JPS56139288A/en
Publication of JPS5916871B2 publication Critical patent/JPS5916871B2/en
Expired legal-status Critical Current

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
JP4268380A 1980-03-31 1980-03-31 Welding arc length detection method and detection device Expired JPS5916871B2 (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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