| 摘要 |
A drive system comprises 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 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, the movable tables fitted into a space between one of the perpendicular side portions and the partition section, the movable tables each having lateral side surfaces to which loaded ball rolling surfaces constituting ball circulation passages are formed so as to correspond to the ball rolling surfaces of the track table, a number of balls disposed and arranged in the ball circulation passages so as to circulate therein in accordance with relative movement between the track table and movable table, and a driving unit for driving the track table and the movable table relatively.
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