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JPS56136280A - Groove location detecting method - Google Patents

Groove location detecting method

Info

Publication number
JPS56136280A
JPS56136280A JP4083680A JP4083680A JPS56136280A JP S56136280 A JPS56136280 A JP S56136280A JP 4083680 A JP4083680 A JP 4083680A JP 4083680 A JP4083680 A JP 4083680A JP S56136280 A JPS56136280 A JP S56136280A
Authority
JP
Japan
Prior art keywords
picture
groove
location
left edges
beveling
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
Application number
JP4083680A
Other languages
Japanese (ja)
Inventor
Mamoru Kawahara
Hisao Matsui
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.)
Kanadevia Corp
Original Assignee
Hitachi Zosen Corp
Hitachi Shipbuilding and Engineering Co Ltd
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, Hitachi Shipbuilding and Engineering Co Ltd filed Critical Hitachi Zosen Corp
Priority to JP4083680A priority Critical patent/JPS56136280A/en
Publication of JPS56136280A publication Critical patent/JPS56136280A/en
Pending 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
    • B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
    • B23K9/127—Means for tracking lines during arc welding or cutting
    • B23K9/1272—Geometry oriented, e.g. beam optical trading
    • B23K9/1274—Using non-contact, optical means, e.g. laser means

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Geometry (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Machine Tool Copy Controls (AREA)

Abstract

PURPOSE:To detect the groove location with a high accuracy without increasing the number of picture elements by taking the picture of groove under the condition which is out of focus and by detecting the location of right and left edges of beveling by calculating the average value of both right and left edges of each line of picture data. CONSTITUTION:Welding groove 3 of base material 2 is irradiated from irradiator 1, and the picture of groove is taken by optical system 4 and the picture is converted into picture signals at photoelectric converter 5. The signal is processed at picture processing device 6 and the torch is traced correctly by torch driving system 7. When the picture of beveling 3 is taken by optical system 4 under the condition which is out of focus, the image becomes dim and is enlarged, the brightness of periphery area is lowered, and the picture is delicately changed in accordance with a slight displacement of groove location. Therefore, when both right and left edges are found on each line of picture data and the average value of each edge is calculated, more delicate variations can be detected than conventional ones, and the location of welding groove 3 can be detected with a high accuracy.
JP4083680A 1980-03-28 1980-03-28 Groove location detecting method Pending JPS56136280A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4083680A JPS56136280A (en) 1980-03-28 1980-03-28 Groove location detecting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4083680A JPS56136280A (en) 1980-03-28 1980-03-28 Groove location detecting method

Publications (1)

Publication Number Publication Date
JPS56136280A true JPS56136280A (en) 1981-10-24

Family

ID=12591706

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4083680A Pending JPS56136280A (en) 1980-03-28 1980-03-28 Groove location detecting method

Country Status (1)

Country Link
JP (1) JPS56136280A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58209481A (en) * 1982-05-28 1983-12-06 Hitachi Zosen Corp Tracing control method
JPS59176614A (en) * 1983-03-28 1984-10-06 Mutoh Ind Ltd Angle detecting method of press work
US4567348A (en) * 1983-01-25 1986-01-28 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Automated weld torch guidance control system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58209481A (en) * 1982-05-28 1983-12-06 Hitachi Zosen Corp Tracing control method
US4567348A (en) * 1983-01-25 1986-01-28 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Automated weld torch guidance control system
JPS59176614A (en) * 1983-03-28 1984-10-06 Mutoh Ind Ltd Angle detecting method of press work

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