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:
-
- (Knoxville, TN)
- Oak Ridge, TN
- Knoxville, TN
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- OSTI Identifier:
- 863484
- Patent Number(s):
- 4183055
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B23 - MACHINE TOOLS B23K - SOLDERING OR UNSOLDERING
B - PERFORMING OPERATIONS B23 - MACHINE TOOLS B23Q - DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING
- 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 = {Tue Jan 01 00:00:00 EST 1980},
month = {Tue Jan 01 00:00:00 EST 1980}
}
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