초록 ▼

A low-friction slide apparatus for use with the translation stage of an optical disc recording/playback system is disclosed. The apparatus includes a rail which is fixed in position. The rail includes porous strips affixed to two orthogonal sides along its longitudinal dimension. A plurality of pass

A low-friction slide apparatus for use with the translation stage of an optical disc recording/playback system is disclosed. The apparatus includes a rail which is fixed in position. The rail includes porous strips affixed to two orthogonal sides along its longitudinal dimension. A plurality of passages between the rail and the porous strips permits air to be forced outwardly through the pores of the strip material. The slide member, which is movably mounted on the rail, has bearing surfaces adjacent the porous strips attached to the rail. Permanent magnets mounted along these bearing surfaces maintain an attractive force between the slide and the rail, countering the force direction of the air flow, thus providing a low-friction bearing film of compressed air. A linear motor included in the rail and slide member induces motion of the slide along the rail. In a second embodiment, the attractive force which counters the force direction of the air flow is provided by a vacuum in the rail which pulls the two slide member bearing surfaces toward the rail.

대표청구항 ▼

A low-friction slide apparatus comprising: a rail; flat elongated strips having a multiplicity of pores, said strips affixed at one surface thereof to said rail on each of two substantially orthogonal sides along the longitudinal dimension of said rail; said rail further having passages disposed alo

A low-friction slide apparatus comprising: a rail; flat elongated strips having a multiplicity of pores, said strips affixed at one surface thereof to said rail on each of two substantially orthogonal sides along the longitudinal dimension of said rail; said rail further having passages disposed along its longitudinal dimension in communication with said strips at said surfaces of affixation; means for providing pressurized air into said passages, said air passing through said pores of said strips; a movable member slidably mounted on said rail, said movable member having substantially orthogonal surfaces adjacent said two substantially orthogonal sides of said rail; and means for providing attractive forces directed normally between each of said two sides of said rail and said corresponding adjacent surfaces of said movable member, said attractive forces causing compression of said air exiting said pores, said compressed air providing low-friction bearing films between said two sides of said rail and said corresponding adjacent surfaces of said movable member.