CS200714B1 - Massive block of the roller bearing - Google Patents

Description

The subject of the invention is a massive roller bearing cage.

In the prior art solid roller bearing cages, the cage consists of a cage body and a cage flange which are connected to threads or ignited pins formed from the cage body. The number of rivets resp. pins equal to the number of rolling elements. The number of rolling elements and bearing capacity is thus limited by the cross-sectional area of the connecting thread or the thread. pin. The guide windows in the cage body are made by milling, which is unproductive and inaccurate. The surface of the cage body is unsymmetrically machined, by releasing the internal stresses of the cage it deforms and hence difficulties in mounting the cage body with the cage flange. This drawback is increased when forming the locking pins from the cage body due to the extension of the unsymmetrically machined cage body.

The above-mentioned drawbacks are overcome by the massive roller bearing cage according to the invention, which consists of an integral annular body in which each roller guide is formed by the intersection of a circumferential continuous axial groove and a radial cylindrical relief whose diameter exceeds the length of the guide window. circumferential continuous axial grooves. The continuous axial groove forms part of the cylindrical surface and the contact of the roller cage is flat, or the continuous axial groove has planar sides and the contact of the roller cage is straight.

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Creating a cage guide window by a circumferential continuous axial groove and radial cylindrical relief allows high precision manufacturing of the cage guide window functional surfaces, and thus the cage performs the function of the ellminator of geometric j and movement inaccuracy of the bearing in addition to the rolling aeparator function. In addition, the method of forming cage guide windows by circumferential continuous axial grooves and radial cylindrical relief will allow the number of roller bearings to be increased, the production of the cage will be productive, and will be a prerequisite for easy automation of the bearing assembly process.

The accompanying drawing shows an example of the embodiment of a massive roller bearing cage and a method of forming the guide windows according to the invention. Fig. 1 is a longitudinal section through a massive cage with internal continuous axial grooves; and FIG. 2 shows a cross-section of a massive cage with internal continuous axial grooves. Fig. 3 shows a longitudinal impact through a massive cage with external continuous axial grooves; and FIG. 4 shows a cross section of a massive cage with external continuous axial grooves.

In principle, two ways of forming cage windows are possible, namely by internal or external circumferential continuous axial grooves. In both ways of forming windows in a massive cage in the longitudinal and transverse section of the cage, the annular cage body 1, the circumferential continuous axial groove 2, the radial cylindrical reliefs 2 and the rolling element 4 are shown. accordingly, the contact of the bridge 6 of the cage 1 with the roller 4 is flat or straight. The guide window 7 is formed in the annular body of the massive cage 1 by the intersection of the circumferential continuous axial groove 2 and the radial cylindrical relief 2 in that the diameter D of the radial cylindrical relief 3 in the length of the guide window 7 exceeds dimension B of the circumferential continuous axial groove 2.

The blank, which is a forging or casting and a pre-cast or preformed form of continuous axial grooves 2 and radial cylindrical relief 3 aa, in the case of an embodiment with internal circumferential continuous axial grooves 2, is machined on the fronts of the body and cages 1. machining the circumferential continuous axial grooves 2 by dragging or dropping. by pushing it to done. The precisely produced circumferential axial grooves 2 serve for clamping in a further operation - the radial cylindrical relief 3 and cage surface 1 being assembled, whereby in the intersection of the circumferential continuous axial grooves 2 and radial cylindrical relief 2, the guide windows J of the rolling bodies 4 are formed in the annular body 4 cages 1. In this manner of forming the guide windows 7 of the rolling elements 4, a high geometric accuracy of production of the massive cage 1 of the roller bearing is achieved. In a similar manner, the guide windows 7 of the rolling elements 4 and the outer circumferential continuous axial grooves 2 can be produced.

A casting roller bearing cage 1 made by casting by pressure, coxy, or plastic spraying has the guide windows 7 of the rolling bodies 4 formed by the intersection of the core of the radial cylindrical relief 3 and the core of the circumferential continuous axial groove 2 in the length of the guide window 7.

Claims (3)

OBJECT OF THE INVENTION A bi-directional roller bearing cage, characterized in that it is formed by an integral annular body (1) in which each guide window (7) of the rolling element (4) is formed to penetrate circumferentially through axial groove (2) and radial cylindrical relief (3). wherein the diameter (D) of the radial cylindrical relief (3) in the length of the guide window (7) exceeds the dimension (B) of the circumferential continuous axial groove (2). 2. A roller bearing cage according to claim 1, characterized in that the through axial groove (2) has cylindrical flanks (5). A roller bearing cage according to claim 1, characterized in that the continuous axial groove (2) has planar sides (5).