Adjustable transducer probe, which is attached to a welding torch and maintains a preset touch-to-work distance, accurately follows irregular surfaces, is less sensitive to heat and static interference, and has more positive response because of electro-mechanical control

Hawkes, E. D.

English

NASA Technical Reports Server

October 1969	 Brief 69-10533 
NASA TECH BRIEF 
NASA Tech Briefs are issued to summarize specific innovations derived from the U.S. space program, 
to encourage their commercial application. Copies are available to the public at 15 cents each 
from the Clearinghouse for Federal Scientific and Technical Information, Springfield, Virginia 22151. 
Gas Metal Are (GMA) Weld Torch Proximity Control 
An adjustable transducer probe is attached to a 
welding torch and maintains a preset torch-to-work 
distance. When welding an irregular surface the 
electro-mechanical probe sends an error signal to the 
weld head drive motor that adjusts the torch distance 
automatically. The figure illustrates the probe and 
torch in working position. This innovation has the 
following advantages over existing systems: I) Accu-
rate follo ing of irregular surfaces: 2) less sensitk i1
to heat; 3) Insensitivity to static interference; and 4) 
More positive response because of electro-mechanical 
control. 
Note: 
No further documentation is available. Inquiries 
may be directed to: 
Technology Utilization Officer 
Marshall Space Flight Center 
Huntsville, Alabama 35812 
Reference: B69- 10533
continued overleafl 
This document was prepared under the sponsorship of the National 
Aeronautics and Space Administration. Neither the United States 
Government nor any person acting on behalf of the United States
Government assumes any liability resulting from the use of the 
information contained in this document, or warrants that such use 
will be free from privately owned rights.
https://ntrs.nasa.gov/search.jsp?R=19690000506 2020-03-16T18:05:08+00:00Z
Patent status: 
Inquiries about obtaining rights for the commercial 
use of this invention may be made to NASA, Code GP, 
Washington, D.C. 20546. 
Source: Eugene D. Hawkes of

North American Rockwell Corporation

under contract to 
Marshall Space Flight Center 
(MFS- 16327) 
Brief 69-10533	 Category 01


Gas Metal Arc /GMA/ weld torch proximity control

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