JPH0613382Y2 - Roller bearing - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The present invention relates to an improvement of a roller bearing which is effectively implemented in a sliding table device used for machine tools, measuring instruments and the like.

[Prior art]

For example, in a slide table device that slides a slide table over a track table, a circulation groove is provided in a block body fixed to the slide table, and a large number of rollers can be rolled in this circulation groove. There is known a structure in which a bearing unit fitted in the above is used, and the load on the slide base side can be borne by the roller of the bearing unit.

[Problems to be solved by the device]

In the above sliding base device, since a large number of rollers are put in the circulation groove for rolling, the rollers before and after rolling collide with each other to increase rolling friction, and the rollers have an arc shape of the circulation groove. When rolling on a curved portion, the direction of the roller becomes unstable, and the roller cannot be smoothly rolled due to catching and the like, and the sliding precision of the sliding base is unavoidably reduced.

[Means for solving problems]

SUMMARY OF THE INVENTION The present invention solves the above problems, and an object of the present invention is to provide a roller bearing improved in sliding accuracy, excellent in durability, and easy to manufacture. Therefore, the above object of the present invention is a roller bearing in which a large number of rollers are rotatably connected, and each of the rollers is provided with a circumferential groove in the axial center portion thereof. A support ring portion formed in the central portion of the connection link is rotatably fitted to the roller, and adjacent connection links are connected by connection ear portions provided on both sides of the support ring portion to connect the rollers. This is achieved by the roller bearing configured by connecting the above so as to be orthogonal to each other.

【Example】

Embodiments of the present invention will be described below with reference to the accompanying drawings. The roller 1 is provided with a circumferential groove 2 at the center in the axial direction, and the rollers 1 adjacent to each other via the circumferential groove 2 are connected by a connecting link 3. The connecting link 3 has a support ring portion 4 formed at the center thereof, and connection ears 5 are provided adjacent to both sides of the support ring portion 4, respectively. The cutouts 4a and 5a are provided. The support ring portion 4 of the connecting link 3 is rotatably fitted in the circumferential groove 2 of the roller 1, while the connecting link portions 5 connect the adjacent connecting links 3 to each other, and the plurality of rollers 1, 1, 1. 1
The present invention is embodied by connecting the ... Alternately orthogonally (for example, connecting endlessly as shown in FIG. 1). According to the above configuration, since the adjacent rollers 1 are connected to each other by the support link 3 in a positional relationship orthogonal to each other, when the present roller bearing is set and used in the circulation groove of the slide base device, for example, Since the rollers 1 are prevented from colliding with each other and each roller 1 can roll smoothly, its rolling performance is improved and its directionality is free, and it can be used regardless of the shape of the circulation groove. In addition, the connecting ears 5 provided on the connecting link 3 are
It is also possible to communicate with and by means of a notch, and to implement it as a state of holes (not shown) provided on both sides of the support ring portion 4.

[Effect of device]

The present invention is as described above, in which a large number of rollers are provided with a circumferential groove at the central portion in the axial direction, and the rollers adjacent to each other in the circumferential groove portion are connected by a support link so as to be orthogonal to each other. Therefore, it can be used regardless of the shape of the circulation groove, and the problem that the rollers roll and collide while being pulled is eliminated, and the sliding accuracy when applied to a slide table device etc. Can be further increased, and there is an advantage that the manufacturing is easy and can be performed easily.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a front view with a part omitted, FIG. 2 is a perspective view of a roller, FIG. 3 is a perspective view of a connecting link, and FIG. 4 is FIG. FIG. In the figure, 1 is a roller, 2 is a circumferential groove, 3 is a connecting link, 4 is a support ring portion, and 5 is a connecting ear portion.

Claims (1)

[Scope of utility model registration request] 1. A roller bearing in which a large number of rollers are rotatably connected to each other, wherein each roller is provided with a circumferential groove at a central portion in the axial direction, and a connecting link is provided in the circumferential groove of these rollers. While the support ring portion formed in the central portion of the support ring is rotatably fitted, the connecting ears provided on both sides of the support ring portion connect adjacent connecting links, and the rollers are alternately crossed at right angles. Roller bearings characterized by being connected as described above.