| 摘要 |
PROBLEM TO BE SOLVED: To provide a ball screw device or table moving device movable at high speed with a long stroke by providing support mechanisms integrally moved with a ball nut through a moving base to support a ball screw shaft on both near sides of the ball nut. SOLUTION: A moving base comprises a moving base 51 moving at high speed on the guide rail 41 of a linear guide 4 along a ball screw shaft 3, support brackets 52, 52 raised on both ends of the moving base 51, and a ball nut block 53 raised in the middle position of the support brackets 52, 52 to fix a fixed ball nut. Slide bearings 52a slidably engaged with spline grooves 3a to support the ball screw shaft 3 are fixed to the support bracket 52, 52 provided in the front and rear of the ball nut block 53, and they support the ball screw shaft 3 in such a manner that the moving base is longitudinally movable in the axial direction to the ball screw shaft 3.
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