Exploiting robotic link deflection for low-cost force measurement in manufacturing

A custom, low-cost force measurement system for manufacturing is presented that exploits robotic link deflection for measurement purposes instead of utilizing a commercially purchased load cell. Force measurement can be an important aspect to many manufacturing processes, as it can allow for force f...

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Bibliographic Details
Published in:Measurement : journal of the International Measurement Confederation 2012, Vol.45 (1), p.140-143
Main Authors: Gibson, B.T., Cox, C.D., Longhurst, W.R., Strauss, A.M., Cook, G.E.
Format: Article
Language:English
Subjects:
Automation
Deflection
Force
Force measurement
Friction Stir Welding
Industrial robots
Links
Manufacturing
Manufacturing engineering
Measurement
Robot
Robotics
Tracking
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Summary:A custom, low-cost force measurement system for manufacturing is presented that exploits robotic link deflection for measurement purposes instead of utilizing a commercially purchased load cell. Force measurement can be an important aspect to many manufacturing processes, as it can allow for force feedback control or other process-planning related operations, such as tool-workpiece autozero or through-the-tool joint tracking. This system is demonstrated on a machine that is used for Friction Stir Welding research, and a Finite Element Analysis is also conducted on the robotic link that is used for axial force measurement purposes. This system may be particularly attractive to small businesses or low-volume manufacturers whose smaller operating budgets may normally prohibit them from implementing force measurement systems.
ISSN:0263-2241
1873-412X
DOI:10.1016/j.measurement.2011.09.012