Patent ID: 6839970
Filing Date: 2005-01-11
Classification: B23Q

Abstract:
1. A method for ultra-precision positioning and orienting of a platform comprising the steps of: kinematically constraining all six degrees of freedom of the platform by providing a single translation constraint on each of exactly six points on the platform, each translation constraint provided by one of six linking devices connecting the platform to each of three slide assemblies, with each slide assembly having a slide base and a slide plate carrying a pair of the linking devices; controlling at least one of the three slide assemblies to tip, tilt, and elevate the platform by performing at least one of the following: displacing a first slide plate with respect to a first slide base along a first geometric axis to move a first pair of the six translation constraints; displacing a second slide plate with respect to a second slide base along a second geometric axis to move a second pair of the six translation constraints; and displacing a third slide plate with respect to a third slide base along a third geometric axis to move a third pair of the six translation constraints.