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AssigneeSystems, Machines, Automation Components Corporation
InventorsArthur T. Leung, Michael S. Sheaffer, Edward A. Neff, Michael A. Ferris, Kieran Boyle, Christopher Johnson, Joseph M. Quashnock
Estimating the term…
A method and device for moving a probe assembly into soft contact with a work surface includes initially placing the probe into an approach position. Advancement of the probe along a substantially perpendicular path toward the work surface is then controlled by applying a restraining force on the probe. This resisting force is decreased until the weight of the probe assembly just overcomes the static friction forces that are acting on the probe. After the static friction forces are overcome, the probe advances along a path toward the work surface. By monitoring this advancement, soft contact of the probe with the work surface can be determined when the velocity of the probe changes to zero. First, the position of the probe can be monitored to advance the probe along the path through a known travel distance. Second, the velocity of probe advancement can be monitored to indicate soft contact when velocity changes to zero. Third, accelerations of the probe can be monitored to indicate soft contact when the acceleration exceeds a predetermined threshold. Fourth, a load sensor can be placed on the probe to indicate soft contact when the load sensor generates a predetermined value. And, finally, soft contact can be accepted as being consequential of the advancement.
A method for moving a probe assembly along a substantially linear path into soft contact with a work surface which comprises the steps of:
A method for moving a probe assembly along a substantially linear path into soft contact with a work surface which comprises the steps of:
A device for moving a probe assembly along a substantially linear path into soft contact with a work surface which comprises:
Dependencies are inferred from the claim text.