Air Bearing Coupler for Eliminating Non-axial Forces
Original Publication Date: 1985-May-01
Included in the Prior Art Database: 2005-Feb-19
When a power source is attached to a precision slide, the linear accuracy of the slide is disrupted because the power source imparts forces not only in the axial direction, but also in the vertical and lateral directions. Figs. l and 2 show an air bearing coupler that prevents non-axial forces from affecting a precision slide. The coupler consists of top plate 2 into which air is introduced through tube l. The air is routed internally through top plate 2 and into side plates 3 and allowed to escape through small jets that set up a pressurized air film between side plates 3 and a rigid member 4 of the slide 6. The only force transmitted from connecting rod 5 to the slide is the axial force since the air bearing has zero stiffness in the vertical and lateral directions.