CN221033645U - Bearing inner ring and bearing - Google Patents

Abstract

The utility model discloses a bearing inner ring and a bearing, wherein the bearing inner ring comprises: the bearing inner ring body comprises an inner curved surface, a first inner plane, a second inner plane, an outer plane, a first side surface and a second side surface, wherein the high side of the inner curved surface is integrally connected with the first inner plane, and the low side of the inner curved surface is integrally connected with the second inner plane; the first inner plane is integrally connected with the first side surface; the second inner plane is integrally connected with the second side surface; two sides of the outer plane are respectively connected with the first side face and the second side face in an integrated mode. The bearing inner ring can effectively reduce the processing cost by reducing one inner plane, improve the processing efficiency, increase the height of the end face of the bearing, increase the contact strength of the end face and prolong the service life of the bearing.

Description

Bearing inner ring and bearing

Technical Field

The utility model relates to the technical field of bearing manufacturing, in particular to a bearing inner ring and a bearing.

Background

The bearing is an important part in modern mechanical equipment, can support a mechanical rotating body, reduce the friction coefficient in the motion process of the mechanical rotating body and ensure the rotation precision of the mechanical rotating body, and is generally composed of an inner ring, an outer ring, rolling bodies and a retainer.

At present, the precision angular contact bearing applied to the space control moment gyroscope needs to bear a certain rotating speed, generally higher than 8000rpm, and the cross section of the bearing inner ring is shown in fig. 1 and is formed by mutually connecting and enclosing a second inner curved surface 101, a third inner plane 102, a fourth inner plane 103, a fifth inner plane 107, a second outer plane 104, a third side surface 105 and a fourth side surface 106.

However, the bearing inner ring in the related art has a large number of processing surfaces and processing steps, which affect the processing efficiency.

Disclosure of utility model

The present utility model is directed to a bearing inner race and a bearing, which solve the foregoing problems of the related art.

In order to achieve the above object, the first aspect of the present utility model adopts the following technical scheme:

A bearing inner ring comprising: a bearing inner ring body; the bearing inner ring body is formed by interconnecting and enclosing an inner curved surface, a first inner plane, a second inner plane, an outer plane, a first side surface and a second side surface; the high side of the inner curved surface is integrally connected with the first inner plane, and the low side of the inner curved surface is integrally connected with the second inner plane; the first inner plane is integrally connected with the first side face; the second inner plane is integrally connected with the second side surface; the two sides of the outer plane are integrally connected with the first side face and the second side face respectively.

Further, the included angles between the outer plane and the first side face and the second side face are 90 degrees; the included angle between the first inner plane and the first side surface is [45 degrees, 135 degrees ]; the included angle between the second inner plane and the second side surface is [30 degrees, 150 degrees ].

Further, an included angle between the first inner plane and the first side surface is 90 degrees; the included angle between the second inner plane and the second side surface is 93 degrees.

Further, the length of the first side surface in the radial direction is greater than the length of the second side surface in the radial direction.

Further, the length of the first inner plane in the axial direction is greater than the length of the second inner plane in the axial direction.

Further, the first inner plane and the first side face are integrally connected through line chamfering;

the second inner plane and the second side face are integrally connected through a line chamfer;

The outer plane is integrally connected with the first side face and the second side face through line chamfering.

In a second aspect, the utility model also provides a bearing having a bearing inner ring as described in the first aspect.

The beneficial effects of the utility model are as follows: according to the bearing inner ring, two inner planes forming an included angle in the bearing inner ring in the related technology are combined into one inner plane, so that at least one grinding process is reduced, the processing cost can be effectively reduced, the processing efficiency is improved, the height of the end face of the bearing is increased, the contact strength of the end face is increased, and the service life of the bearing is prolonged.

Drawings

FIG. 1 is a schematic cross-sectional view of a bearing inner race according to the related art;

FIG. 2 is a schematic cross-sectional view of an inner race of a bearing according to the present utility model;

FIG. 3 is a schematic cross-sectional view of a preferred embodiment of the present utility model;

In the figure: the bearing comprises a second inner curved surface-101, a third inner plane-102, a fourth inner plane-103, a fifth inner plane-107, a second outer plane-104, a third side surface-105, a fourth side surface-106, a bearing inner ring body-2, an inner curved surface-201, a first inner plane-202, a second inner plane-203, an outer plane-204, a first side surface-205 and a second side surface-206.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the detailed description is presented by way of example only and is not intended to limit the utility model.

Fig. 2 shows a cross-sectional view of the bearing inner ring according to the present utility model, which comprises: a bearing inner ring body 2; the bearing inner ring body 2 comprises an inner curved surface 201, a first inner plane 202, a second inner plane 203, an outer plane 204, a first side 205 and a second side 206; the high side of the inner curved surface 201 is integrally connected with the first inner plane 202, and the low side of the inner curved surface 201 is integrally connected with the second inner plane 203; the first inner plane 202 is integrally connected with the first side 205; the second inner plane 203 is integrally connected with the second side 206; both sides of the outer plane 204 are integrally connected to the first side 205 and the second side 206, respectively.

By means of the bearing inner ring, the two included angle inner planes of the bearing inner ring in the related technology are reduced to be one inner plane, so that at least one grinding process is reduced, the processing cost can be effectively reduced by 10%, the processing efficiency is improved by 10%, the end face height of the bearing is increased, the end face contact strength is increased, and the service life of the bearing is prolonged.

Further, in order to enable the bearing inner ring to run more stably, in the present utility model, the angles between the outer plane 204 and the first side 205 and the second side 206 are all 90 °; the included angle between the first inner plane 202 and the first side surface 205 is [45 °,135 ° ]; the second inner plane 203 is at an angle of [30 °,150 ° ] to the second side 206.

It is further preferred that the angle between the first inner plane 202 and said second inner plane 203 is 40 °.

Further preferably, the angle between the first inner plane 202 and the first side 205 is 90 °, and the angle between the second inner plane 203 and the second side 206 is 93 °, as shown in fig. 3.

Further preferably, the second inner plane 203 forms an angle of 110 ° with the second side 206.

Further, in order to enable the bearing inner ring to operate more stably, in the present utility model, the length of the first side surface 205 in the radial direction is greater than the length of the second side surface 206 in the radial direction, that is, the radius of the first side surface is greater than the radius of the second side surface; the length of the first inner plane 202 in the axial direction is greater than the length of the second inner plane 203 in the axial direction.

Further, in order to remove burrs generated by machining on the parts and facilitate assembly of the parts, in the utility model, the first inner plane and the first side face are integrally connected through a line chamfer; the second inner plane and the second side face are integrally connected through a line chamfer; the outer plane is integrally connected with the first side face and the second side face through line chamfering.

Further, the utility model also provides a bearing, which is provided with the bearing inner ring shown in fig. 2.

The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which is also intended to be covered by the present utility model.

Claims (6)

1. A bearing inner race comprising:

A bearing inner ring body;

The bearing inner ring body comprises an inner curved surface, a first inner plane, a second inner plane, an outer plane, a first side surface and a second side surface;

The high side of the inner curved surface is integrally connected with the first inner plane, and the low side of the inner curved surface is integrally connected with the second inner plane;

the first inner plane is integrally connected with the first side face;

the second inner plane is integrally connected with the second side surface;

the outer plane is integrally connected with the first side face and the second side face;

The included angles between the outer plane and the first side face and the second side face are 90 degrees;

the included angle between the first inner plane and the first side surface is [45 degrees, 135 degrees ], and the included angle between the second inner plane and the second side surface is [30 degrees, 150 degrees ].

2. The bearing inner ring of claim 1, wherein an angle between the first inner plane and the first side surface is 90 °; the included angle between the second inner plane and the second side surface is 93 degrees.

3. The bearing inner ring of claim 1, wherein a length of the first side surface in a radial direction is greater than a length of the second side surface in a radial direction.

4. The bearing inner race of claim 1, wherein a length of the first inner plane in an axial direction is greater than a length of the second inner plane in an axial direction.

5. The bearing inner ring according to claim 1, wherein,

The first inner plane and the first side face are integrally connected through a line chamfer;

the second inner plane and the second side face are integrally connected through a line chamfer;

The outer plane is integrally connected with the first side face and the second side face through line chamfering.

6. Bearing, characterized by having a bearing inner ring according to any of claims 1-5.