RU2269685C1 - Method of uniform distribution of rolling elements in antifriction bearing - Google Patents

Abstract

FIELD: mechanical engineering; manufacture of antifriction bearings.

SUBSTANCE: proposed method of uniform distribution of rolling elements of antifriction bearing containing races or disks arranged concentrically or parallel to each other with paths on races or disks, each being located on one of races or disk along which rolling elements roll, comes to the following: rolling elements are arranged between paths so that each rolling element is in contact along contact surface only with one of paths and is in contact along contact surfaces not less than with two rolling elements in contact with other path arranged on other race or disk. Rolling elements in contact with one of paths do not contact each other.

EFFECT: low coefficient of friction, uniform distribution of load between rolling elements.

5 cl, 1 dwg

Description

The invention relates to mechanical engineering and can be used in the production of rolling bearings.

A known method for the uniform distribution of rolling elements of a rolling bearing using a separator that separates the rolling elements, distributing them evenly along the track and preventing mutual contact (Commissioner A.G. Rolling bearings in heavy duty: Reference book. - M.: Engineering, 1987, 384 p., ill. p. 7).

The disadvantage of this method is the lower load capacity compared to the full complement bearing.

There is a method of uniform distribution of rolling elements of a rolling bearing using spur involute gears (patent RU No. 2135851, class F 16 C 19/22, 1997).

The disadvantage of this method is the complexity of the design and an increase in the axial dimensions of the bearing.

The closest adopted for the prototype is a method in which the rolling bearing comprises a housing, a retaining ring, outer and inner rings, bearing balls (or rollers), separating balls (or rollers), located alternately with the bearing rolling elements (a.s. No. 96101411, CL F 16 C 19/14, 1996).

The disadvantage of this method is the smaller in comparison with the non-separating rolling bearing the number of bearing rolling elements, additional friction forces between the bearing rolling elements and the separating rolling elements.

A method is proposed for uniform distribution of rolling elements of a rolling bearing, in which the rolling bearing contains concentrically or parallel to each other located rings or discs with rolling tracks located on them, respectively (1) and (2), each of which is located on one of the rings or the disk, on which rolling bodies roll, characterized in that the rolling bodies are placed between the raceways (1) and (2), so that each of the rolling bodies (3) or (4) contacts in the contact area, respectively (5) or (6) only with one th of the raceways, respectively (1) or (2) and is in contact with the contact areas (7) with at least two rolling bodies, respectively (4) or (3), in contact with the other of the raceways, respectively (2) or (1) located on another ring or disk, rolling elements in contact with one of the raceways (1) or (2) do not contact each other.

By changing the ratio of the diameters of the rolling elements (3) and (4), the dynamic load rating of the contacts (5), (6) and (7) is regulated.

The diameters of the rolling bodies are chosen so that the scatter of the ratios of the dynamic load capacity of the contacts (5), (6) and (7) of the rolling bodies (3) and (4) to the equivalent load, respectively, in the contact (5), (6) and (7) of the bodies rolling (3) and (4) was minimal.

The proposed method allows you to create a full complement rolling bearing, in which the relative speeds of the contacting rolling bodies are directed in one direction, which reduces friction. The proposed method allows you to more evenly distribute the load between the rolling bodies. The proposed method allows you to create a self-aligning full complement bearing.

To explain the described method, the drawing shows a scan of the placement of the rolling elements (3) and (4) between the inner ring with the raceway (1) and the outer ring with the raceway (2) in an angular contact bearing with tapered rollers where:

1 - raceway on the inner ring;

2 - raceway on the outer ring;

3 - rolling elements in contact with the inner ring;

4 - rolling elements in contact with the outer ring;

5 - contact area of the rolling body with the inner ring;

6 - contact area of the rolling body with the outer ring;

7 - contact area between the rolling bodies.

The proposed method is as follows, the description is given on the example of an angular contact bearing with tapered rollers. An angular contact bearing with tapered rollers comprises an inner ring with a raceway (1) and an outer ring with a raceway (2) along which tapered rollers (3) and (4) roll. Tapered rollers are placed between the raceways so that in the loading zone each tapered roller is in contact with only one of the raceways (1) or (2), for example, tapered rollers (3) are in contact only with the raceway (1), and tapered rollers (4 ) contact only with the raceway (2). The conical roller (3) is in contact with two conical rollers (4). The conical roller (4) is in contact with two conical rollers (3). Tapered rollers in contact with the same raceway (1) or (2) do not contact each other, for example, tapered rollers (3) contacting only with the raceway (1) do not contact each other, and tapered rollers (4 ) contacting only with the raceway (2) do not contact each other.

The diameters of the rolling bodies are chosen so that the scatter of the ratios of the dynamic load capacity of the contacts (5), (6) and (7) of the rolling elements (3) and (4) to the equivalent load in the contact, respectively (5), (6) and (7) of the bodies rolling (3) and (4) was minimal.

In a bearing constructed by this method, the relative velocities of the contacting rolling bodies (3) and (4) are directed in the same direction.

If the inner ring is misaligned relative to the outer ring, since the contact areas (5), (6), through which the load is transferred between the raceway (1), (2) and the tapered rollers (3), (4), are located on the line of action of the force loads, and the contact pads (7), through which the load is transferred between the conical rollers (3) and (4), are not located on the line of action of the load force, the center distance between the conical rollers (3) and (4), respectively, is redistributed.

With different sizes of rolling bodies (3) and (4), a process similar to that described in the previous paragraph occurs, due to which all rolling bodies (3) and (4) come into contact with raceways (1) and (2).

Thus, the proposed method allows you to create a full complement bearing, in which the relative speeds of the contacting rolling elements are directed in one direction, which allows to reduce friction and wear of the rolling elements. The proposed method allows you to create a self-aligning full complement bearing. The proposed method allows you to more evenly distribute the load between the rolling bodies.

Claims (5)

1. The method of uniform distribution of rolling elements of a rolling bearing, containing concentrically or parallel to each other located rings or discs with raceways (1) and (2) located on them, each of which is located on one of the rings or disc, on which the bodies roll rolling element, characterized in that the rolling elements are placed between the raceways (1) and (2) so that each of the rolling bodies (3) either (4) contacts on the contact area respectively (5) or (6) with only one of the tracks rolling accordingly (1) or (2) and to ntaktiruet on areas of contact (7) with at least two rolling elements, respectively (4) or (3) contacting the other of the raceways, respectively, (2) either (1) on the other ring or disk. 2. The method according to claim 1, characterized in that each of the rolling bodies (3) in contact with the raceway (1) or (4) in contact with the raceway (2) contacts in contact areas (7) of at least two rolling bodies, respectively (4) or (3), in contact with the other of the raceways located on the other ring or disk. 3. The method according to claim 1, characterized in that the rolling elements (3) or (4) in contact with one of the raceways, respectively (1) or (2), do not contact each other. 4. The method according to claim 1, characterized in that the dynamic load capacity of the contacts (5), (6) and (7) is controlled by changing the ratio of the diameters of the rolling elements (3) and (4). 5. The method according to claim 1, characterized in that the diameters of the rolling elements are chosen such that the variation in the ratios of the dynamic load capacity of the contacts (5), (6) and (7) of the rolling elements (3) and (4) to the equivalent load in the contact, respectively (5), (6) and (7) rolling elements (3) and (4) was minimal.