Patent ID: 6539834
Filing Date: 2003-04-01
Classification: B23Q,F15B

Abstract:
A slide table unit comprising a main body block having therein two rod support holes which are parallel to each other, a table for carrying a workpiece and disposed on said main body block for linear movement, hydrostatic bearings respectively provided in said rod support holes, and two rods respectively supported in noncontact states in said rod support holes through said hydrostatic bearings such that said rods can expand and contract, whereineach said hydrostatic bearing is formed of a porous sleeve and has a function of supporting said rod in said noncontact state by compressed air supplied between an inside of said sleeve and said rod through said sleeve, and one of said two rods projects outward from one end face of said main body block, the other of said two rods projects outward from the other end face on an opposite side of said main body block, projecting ends of said rods are respectively connected to said table, base end faces of said respective rods are formed as pressure receiving faces, and said table is moved by alternately applying fluid pressure to said pressure receiving faces of said two rods to cause said rods to operate.