RU2570891C1 - Ball cageless roll bearing - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: ball cageless roll bearing comprises an external (1) ring and an internal (2) races with two raceways and collars on each of them, rolling bodies in the form of balls (3). The distance between the conjugated points of adjacent raceways on each ring (1, 2) amounts to 0.731-0.866 of the ball (3) diameter. Inner race (2) is made split, with raceway and collars (4, 5) on each of its halves. Collars (4) with large height of race (2) are located at side of external ends of the bearing, and collars (5) with lower height of the race (2) made with chamfers are located at sides of the raceways opposite to the collars (4).

EFFECT: increased durability of bearing performance, provision for taking up the axial load in both directions.

1 dwg

Description

The invention relates to the field of engineering, in particular to ball bearings and can be used in low-speed highly loaded mechanisms.

Known double ball bearing, containing outer and inner rings with a raceway on each of the rings, the rolling elements in the form of balls, separators for separating rolling elements. The inner rings are provided with flanges, the larger of the flanges being located on the side of the outer ends of the double roller bearing, and the smaller of the flanges with bevels are on the side of the inner mating ends of the bearing. In addition to the radial double bearing, it also accepts axial load in both directions (Chermensky O.N., Fedotov N.N. Rolling bearings: Directory-catalog. - M.: Mashinostroenie, 2003. - 576 p .; type. 236000, p. 158 )

The disadvantage of the described bearing is the low load capacity caused by the presence of cages, limiting the number of balls on each raceway.

Known multi-row full complement ball bearing containing an outer ring with one cross section and a local recess in the cross section, the inner ring and rolling elements in the form of balls. Both rings are provided with cylindrical beads. At least two raceways are made on the working surfaces of the outer and inner rings, and the distance between the same points of adjacent raceways on each ring is 0.731-0.866 of the diameter of the ball. The use of this bearing makes it possible to reduce the relative sliding speeds of the surfaces of rolling bodies at their contact points and thereby reduce their wear and increase the bearing life (copyright certificate SU 1693286 A1, M. Cl. ⁵ F16C 19/28).

One of the disadvantages of the described bearing is the reduced durability due to the outer ring with one cross section and a local recess for introducing balls, which, while maintaining the geometric parameters of the continuous ring, presents significant technological difficulties, without taking into account the decrease in its rigidity, the mutual displacement of the raceways in the location of the cut during mounting of the bearing, which in turn leads to an unfavorable distribution of contact stresses between the ball and Rolling horns in the outer ring zone under circulating load. Another disadvantage of the described bearing is the inability to perceive the axial load in both directions, since the implementation of the outer ring with a local recess for introducing balls does not allow the use of a non-separating bearing in units with acting axial loads, where under the action of axial forces, the balls can move from the axis of the raceway; in addition, during operation of the bearing, vibration may occur from the contact of the balls with the recess.

The objective of the invention is to increase the durability of the bearing and the perception of axial load in both directions.

The problem is solved in that in a ball-type non-separating rolling bearing containing an outer and inner ring with two raceways and beads on each, the rolling elements are in the form of balls, and the distance between the same points of adjacent raceways on each ring is 0.731-0.866 of the diameter of the ball , according to the invention, the inner ring is made split, with a raceway and flanges on each half thereof, and the larger of the flanges of the inner ring are located on the side of the outer ends of the bearing , and the smaller of the flanges of the inner ring, made with bevels, are located on opposite sides of the raceways from the large flanges.

An increase in the durability of the bearing operation is achieved by making the flanges of the inner ring, smaller in height, located on the opposite sides of the raceways, with bevels, which allows for assembly of the bearing without additional recesses and one cross section of the outer ring.

Bearing perception of axial load in both directions is achieved by the symmetrical arrangement of the shoulders.

The present invention is illustrated in the drawing, which shows a ball full complement ball bearing, axial section.

The full complement ball bearing comprises an outer ring 1 and an inner ring 2 with two raceways in each. The rolling bodies are made in the form of balls 3. The distance between the same points of adjacent raceways on each ring is 0.731-0.866 from the diameter of the ball 3.

The inner ring 2 is made split with a raceway in each half. The flanges 4 of the inner ring 2, which are larger in height, are located on the side of the outer ends of the bearing, and the flanges 5, smaller in the height of the inner ring 2, made with bevels, are located on the opposite sides of the raceways of the ring from the flanges 5.

Ball full bearing rolling works as follows.

The proposed bearing installed in the node, device, machine provides the perception of loads and transmission of rotation. When the outer ring 1 and the inner ring 2 of the bearing rotate, the rolling elements also rotate, providing the necessary mutual position of the outer ring 1 and the inner ring 2 of the bearing.

Thus, the use of the proposed bearing in comparison with the use of the bearing selected as a prototype, allows for increased durability and perception of axial load in both directions.

Claims (1)

A full complement ball bearing containing outer and inner rings with two raceways and flanges on each, rolling elements in the form of balls, the distance between the same points of adjacent raceways on each ring being 0.731-0.866 of the diameter of the ball, characterized in that the inner ring made split, with a raceway and flanges on each half, the larger of the flanges of the inner ring are located on the side of the outer ends of the bearing, and the smaller of the flanges of the inner ring and, made with bevels, located on opposite sides of the raceways from the large shoulders.