Skip to Content
Find More Like This
Return to Search

Lateral position detection and control for friction stir systems

United States Patent

June 5, 2012
View the Complete Patent at the US Patent & Trademark Office
Los Alamos National Laboratory - Visit the Technology Transfer Division Website
An apparatus and computer program are disclosed for processing at least one workpiece using a rotary tool with rotating member for contacting and processing the workpiece. The methods include oscillating the rotary tool laterally with respect to a selected propagation path for the rotating member with respect to the workpiece to define an oscillation path for the rotating member. The methods further include obtaining force signals or parameters related to the force experienced by the rotary tool at least while the rotating member is disposed at the extremes of the oscillation. The force signals or parameters associated with the extremes can then be analyzed to determine a lateral position of the selected path with respect to a target path and a lateral offset value can be determined based on the lateral position. The lateral distance between the selected path and the target path can be decreased based on the lateral offset value.
Fleming; Paul (Boulder, CO), Lammlein; David H. (Houston, TX), Cook; George E. (Brentwood, TN), Wilkes; Don Mitchell (Nashville, TN), Strauss; Alvin M. (Nashville, TN), Delapp; David R. (Ashland City, TN), Hartman; Daniel A. (Fairhope, AL)
Vanderbilt University (Nashville, TN)
13/ 242,766
October 7, 2011
GOVERNMENT RIGHTS This invention was made with government support under prime contract No. W-7405-ENG-36 awarded by the United States Department of Energy. The government has certain rights in the invention.