| 摘要 |
A roller guiding apparatus for use in linear guiding portions of a variety of kinds of industrial machines such as machine tools and the like is provided for guiding rollers which rollingly travel along a pair of opposed roller-rolling surfaces formed on a traveling rail and a movable body so as to move the movable body along the traveling rail. The apparatus employs barrel-shaped rollers which are suitable for supporting heavy loads and have excellent self-aligning ability and vibration-damping capability. To this end, the barrel-shaped rollers (4) each have a pair of arc-shaped portions (4a, 4b) which gradually decrease in their diameter from a center thereof toward opposite ends thereof. The opposed roller-rolling surfaces (5, 6) are configured such that those regions thereof which correspond to the opposite side arc-shaped portions (4a, 4b) of each roller (4) are composed of arc surfaces (5b, 5b; 6b, 6b) which have a radius of curvature slightly greater than that of the opposite side arc-shaped portions (4a, 4b) of each roller (4) so as to cause differential slips when the rollers (4) are traveling while contacting the opposed roller-rolling surfaces.
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