Patent ID: 6553855
Filing Date: 2003-04-29
Classification: B23Q,F16C,F16H,Y10T

Abstract:
A drive system comprising:a track table comprising a flat portion, perpendicular side portions extending in parallel to each other along both lateral side edges of the flat portion in a longitudinal direction thereof and at least one partition section formed to the flat portion at a portion between the perpendicular side portions so as to extend in parallel to thereto, said perpendicular side portions having inside surfaces to which rolling member rolling surfaces are formed so as to extend in a longitudinal direction thereof and said partition section having both side surfaces to which loaded rolling member rolling surfaces are formed so as to extend in a longitudinal direction thereof; a plurality of movable tables fitted between said perpendicular side portions and said partition section, said movable tables each having lateral side surfaces to which loaded rolling member rolling surfaces constituting rolling member circulation passages are formed respectively so as to correspond to both said loaded rolling member rolling surfaces of said partition section; a number of rolling members disposed and arranged in said rolling member circulation passages so as to circulate therein in accordance with relative movement between the track table and movable tables; and a drive means for driving said track table and said movable tables so as to cause the relative movement therebetween.