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Title: Electron beam machining using rotating and shaped beam power distribution

Abstract

An apparatus and method are disclosed for electron beam (EB) machining (drilling, cutting and welding) that uses conventional EB guns, power supplies, and welding machine technology without the need for fast bias pulsing technology. The invention involves a magnetic lensing (EB optics) system and electronic controls to: (1) concurrently bend, focus, shape, scan, and rotate the beam to protect the EB gun and to create a desired effective power-density distribution, and (2) rotate or scan this shaped beam in a controlled way. The shaped beam power-density distribution can be measured using a tomographic imaging system. For example, the EB apparatus of this invention has the ability to drill holes in metal having a diameter up to 1,000 {micro}m (1 mm or larger), compared to the 250 {micro}m diameter of laser drilling. 5 figs.

Inventors:
;
Issue Date:
Research Org.:
University of California
OSTI Identifier:
253872
Patent Number(s):
5,534,677
Application Number:
PAN: 8-033,607
Assignee:
Univ. of California, Oakland, CA (United States)
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 9 Jul 1996
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; MACHINE TOOLS; DESIGN; METALS; ELECTRON BEAM MACHINING; BEAM OPTICS; CONTROL SYSTEMS; POSITIONING

Citation Formats

Elmer, J W, and O`Brien, D W. Electron beam machining using rotating and shaped beam power distribution. United States: N. p., 1996. Web.
Elmer, J W, & O`Brien, D W. Electron beam machining using rotating and shaped beam power distribution. United States.
Elmer, J W, and O`Brien, D W. Tue . "Electron beam machining using rotating and shaped beam power distribution". United States.
@article{osti_253872,
title = {Electron beam machining using rotating and shaped beam power distribution},
author = {Elmer, J W and O`Brien, D W},
abstractNote = {An apparatus and method are disclosed for electron beam (EB) machining (drilling, cutting and welding) that uses conventional EB guns, power supplies, and welding machine technology without the need for fast bias pulsing technology. The invention involves a magnetic lensing (EB optics) system and electronic controls to: (1) concurrently bend, focus, shape, scan, and rotate the beam to protect the EB gun and to create a desired effective power-density distribution, and (2) rotate or scan this shaped beam in a controlled way. The shaped beam power-density distribution can be measured using a tomographic imaging system. For example, the EB apparatus of this invention has the ability to drill holes in metal having a diameter up to 1,000 {micro}m (1 mm or larger), compared to the 250 {micro}m diameter of laser drilling. 5 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1996},
month = {7}
}