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Title: Beam/seam alignment control for electron beam welding

Abstract

This invention relates to a dynamic beam/seam alignment control system for electron beam welds utilizing video apparatus. The system includes automatic control of workpiece illumination, near infrared illumination of the workpiece to limit the range of illumination and camera sensitivity adjustment, curve fitting of seam position data to obtain an accurate measure of beam/seam alignment, and automatic beam detection and calculation of the threshold beam level from the peak beam level of the preceding video line to locate the beam or seam edges.

Inventors:
 [1];  [2];  [1]
  1. (Knoxville, TN)
  2. (Oak Ridge, TN)
Issue Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
OSTI Identifier:
863484
Patent Number(s):
4183055
Assignee:
United States of America as represented by United States (Washington, DC) ORNL
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
beam; seam; alignment; control; electron; welding; relates; dynamic; welds; utilizing; video; apparatus; automatic; workpiece; illumination; near; infrared; limit; range; camera; sensitivity; adjustment; curve; fitting; position; data; obtain; accurate; measure; detection; calculation; threshold; level; peak; preceding; line; locate; edges; curve fitting; automatic control; beam welding; near infrared; electron beam; seam alignment; curve fit; accurate measure; alignment control; /348/

Citation Formats

Burkhardt, Jr., James H., Henry, J. James, and Davenport, Clyde M. Beam/seam alignment control for electron beam welding. United States: N. p., 1980. Web.
Burkhardt, Jr., James H., Henry, J. James, & Davenport, Clyde M. Beam/seam alignment control for electron beam welding. United States.
Burkhardt, Jr., James H., Henry, J. James, and Davenport, Clyde M. Tue . "Beam/seam alignment control for electron beam welding". United States. https://www.osti.gov/servlets/purl/863484.
@article{osti_863484,
title = {Beam/seam alignment control for electron beam welding},
author = {Burkhardt, Jr., James H. and Henry, J. James and Davenport, Clyde M.},
abstractNote = {This invention relates to a dynamic beam/seam alignment control system for electron beam welds utilizing video apparatus. The system includes automatic control of workpiece illumination, near infrared illumination of the workpiece to limit the range of illumination and camera sensitivity adjustment, curve fitting of seam position data to obtain an accurate measure of beam/seam alignment, and automatic beam detection and calculation of the threshold beam level from the peak beam level of the preceding video line to locate the beam or seam edges.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {1}
}

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