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Impact micro-positioning actuatorAn impact micro-positioning actuator. In one aspect of the invention, a threaded shaft is threadably received in a nut and the nut is impacted by an impacting device, causing the nut first to rotate relative to the shaft by slipping as a result of shaft inertia and subsequently to stick to the shaft as a result of the frictional force therebetween. The nut is returned to its initial position by a return force provided by a return mechanism after impact. The micro-positioning actuator is further improved by controlling at least one and preferably all of the following: the friction, the impact provided by the impacting device, the return force provided by the return mechanism, and the inertia of the shaft. In another aspect of the invention, a threaded shaft is threadably received in a nut and the shaft is impacted by an impacting device, causing the shaft to rotate relative to the nut.
Document ID
20080009427
Acquisition Source
Marshall Space Flight Center
Document Type
Other - Patent
Authors
Cuerden, Brian
Angel, J. Roger P.
Burge, James H.
DeRigne, Scott T.
Date Acquired
August 24, 2013
Publication Date
January 10, 2006
Subject Category
Mechanical Engineering
Funding Number(s)
CONTRACT_GRANT: NAS8-97309
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-Patent-6,983,667
Patent Application
US-Patent-Appl-SN-10/202,431

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