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Title: Lateral position detection and control for friction stir systems

Abstract

Friction stir methods 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.

Inventors:
 [1];  [2];  [3];  [4];  [4];  [5];  [6]
  1. Boulder, CO
  2. Houston, TX
  3. Brentwood, TN
  4. Nashville, TN
  5. Ashland City, TN
  6. Fairhope, AL
Issue Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1033761
Patent Number(s):
8052034
Application Number:
12/940,237
Assignee:
Vanderbilt University (Nashville, TN)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B23 - MACHINE TOOLS B23K - SOLDERING OR UNSOLDERING
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Fleming, Paul, Lammlein, David H, Cook, George E, Wilkes, Don Mitchell, Strauss, Alvin M, Delapp, David R, and Hartman, Daniel A. Lateral position detection and control for friction stir systems. United States: N. p., 2011. Web.
Fleming, Paul, Lammlein, David H, Cook, George E, Wilkes, Don Mitchell, Strauss, Alvin M, Delapp, David R, & Hartman, Daniel A. Lateral position detection and control for friction stir systems. United States.
Fleming, Paul, Lammlein, David H, Cook, George E, Wilkes, Don Mitchell, Strauss, Alvin M, Delapp, David R, and Hartman, Daniel A. Tue . "Lateral position detection and control for friction stir systems". United States. https://www.osti.gov/servlets/purl/1033761.
@article{osti_1033761,
title = {Lateral position detection and control for friction stir systems},
author = {Fleming, Paul and Lammlein, David H and Cook, George E and Wilkes, Don Mitchell and Strauss, Alvin M and Delapp, David R and Hartman, Daniel A},
abstractNote = {Friction stir methods 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {11}
}

Patent:

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