Linear guide device with off-set load prevention mechanism

Abstract

Provided is a linear guide device in which, even when an offset load is applied to rollers rolling in a load rolling path, the offset load can be effectively reduced and the movement of a slider relative to a raceway rail can be smoothened, and wear of the rollers can be prevented as far as possible. In the linear guide device, a bearing race with a load rolling surface on which rollers roll is provided, the slider is provided with a reception groove where the bearing race is fitted at a position opposed to a raceway rail-side rolling surface. The bearing race and the reception groove are formed in a substantially semi-circular cross-sectional configuration in a direction orthogonal to the rolling direction of the rollers. The bearing race is structured so as to be oscillatable in the reception groove, with an outer peripheral surface of the bearing race being in sliding contact with an inner peripheral surface of the reception groove. An oscillation center of the bearing race in the reception groove is positioned between the raceway rail-side rolling surface and the slider-side load rolling surface that are opposed to each other.

Description

technical field [0001] The present invention relates to a linear guide device for assembling a track and a slider that can move freely relative to and fro, and in particular relates to arranging a plurality of rollers between the track and the slider. Roll type linear guides. Background technique [0002] Patent Document 1: JP-A-58-128526 Gazette; [0003] Patent Document 2: JP-A-62-024646. [0004] Until now, this type of linear guide device has: a rail provided on a fixed part such as a base or a pillar; a plurality of rolling elements such as balls or rollers assembled on the rail, and a slider that can freely reciprocate along the rail . The rolling surface of the rolling element is formed on the above-mentioned rail. In addition, a load rolling surface opposite to the rolling surface of the rail is also formed on the slider. When the rolling surface of the rail and the rolling surface of the slider face each other, the load of the rolling element is formed. scroll p...

AI Technical Summary

Problems solved by technology

Therefore, even if the bearing race is displaced in the circumferential direction according to the eccentric load acting on one roller, the eccentric load acting on each roller cannot be sufficiently relieved due to restraint by the eccentric load acting on the other roller.

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