Ball bearing outer ring structure with stress dispersion grooves

Abstract

The utility model discloses a ball bearing outer ring structure with stress dispersion grooves, which comprises an outer ring body, the middle part of the inner circumferential surface of the outer ring body is provided with a raceway, the outer circumferential surface of the outer ring body is provided with a plurality of stress dispersion grooves at intervals along the circumferential direction, the plurality of stress dispersion grooves are all annularly arranged, and the stress dispersion grooves are arranged in the raceway. The cross sections of the multiple stress dispersion grooves are semicircular, stress can be effectively dispersed, meanwhile, new stress concentration points are prevented from being generated at the edges of the grooves, the machining technology is relatively simple, the cost is low, the depth of the multiple stress dispersion grooves is 1 / 4 of the wall degree of the outer ring body, and the stress dispersion effect is good. And the distance between two adjacent stress dispersion grooves is 8mm. The stress dispersion grooves with specific structures are formed in the outer ring of the bearing, so that the stress concentration phenomenon generated in the working process of the bearing is effectively reduced, the bearing capacity of the bearing is improved, the service life of the bearing is prolonged, and the requirements of modern mechanical equipment on high-performance bearings are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to bearing application technical field, in particular to a ball bearing outer ring structure with stress dispersion groove. BACKGROUND

[0002] Ball bearing is one of the most widely used rolling bearings, plays the key role in supporting and guiding rotation in various mechanical equipment, in the actual working process, the outer ring of ball bearing bears complex load, including radial load, axial load and vibration and impact load generated when the equipment runs, etc., these loads can cause local stress concentration of the outer ring, especially in the area of raceway and ball contact, long-term under high stress state can easily cause fatigue wear, crack initiation and propagation, eventually lead to bearing failure, seriously affect the normal operation and service life of the equipment.

[0003] At present, the traditional ball bearing outer ring structure has certain limitations in dealing with stress concentration problem, although the load capacity can be improved to a certain extent by optimizing material performance and manufacturing process, but for the stress concentration problem under high load, high speed and other harsh conditions, it is still not fundamentally solved, therefore, the utility model provides a ball bearing outer ring structure with stress dispersion groove. SUMMARY

[0004] The utility model solves the technical problem to provide a ball bearing outer ring structure with stress dispersion groove, through setting the stress dispersion groove of specific structure on the bearing outer ring, effectively reduces the stress concentration phenomenon generated in the working process of bearing, improves the load capacity and service life of bearing, to meet the demand of modern mechanical equipment to high performance bearing.

[0005] In order to solve the above technical problem, one of the technical schemes of the utility model is to provide a ball bearing outer ring structure with stress dispersion groove, including the outer ring body, the inner circumferential surface middle part of the outer ring body is provided with raceway, the outer circumferential surface of the outer ring body is provided with a plurality of stress dispersion grooves along the circumferential direction, the stress dispersion groove is annular.

[0006] The utility model is further provided as follows: the cross section shape of the stress dispersion groove is semicircular.

[0007] Through the above technical scheme, the new stress concentration point can be avoided in the edge of the groove while effectively dispersing the stress, and the processing technology is relatively simple and the cost is low.

[0008] The utility model is further provided as follows: the depth of the stress dispersion groove is 1 / 4 of the wall thickness of the outer ring body, and the spacing of the adjacent two stress dispersion grooves is 8mm.

[0009] By the technical scheme, stress dispersion can be maximally played under the premise of guaranteeing the structural strength of the outer ring, if the depth is too shallow, stress cannot be effectively dispersed, if the depth is too deep, the overall strength of the outer ring is weakened, the normal use of the bearing is affected, and reasonable spacing can uniformly disperse the stress borne by the outer ring by the stress dispersion grooves, stress is prevented from being concentrated in the area between adjacent grooves due to too small spacing, or stress concentrated parts cannot be fully covered due to too large spacing.

[0010] The utility model further sets up: a plurality of stress dispersion groove with the outer circumferential surface of outer ring body all are arc transition setting.

[0011] By the technical scheme, the outer wall of the outer ring body and the external connecting component are connected, and the arc-shaped setting prevents damage to the outer wall of the outer ring body during extrusion.

[0012] The utility model further sets up: a plurality of stress dispersion groove's cross section shape all are V-shaped setting.

[0013] By the technical scheme, V-shaped setting can reduce stress concentration, improve operation stability and prolong service life, and fatigue life is improved.

[0014] The utility model further sets up: a plurality of stress dispersion groove's depth is the wall of outer ring body 1 / 5, and the spacing of adjacent two stress dispersion grooves is 6mm.

[0015] By the technical scheme, damage to the entire outer ring body caused by too deep stress dispersion grooves can be prevented, and reasonable spacing can improve stress dispersion of the outer ring body.

[0016] The utility model further sets up: a plurality of stress dispersion groove with the outer circumferential surface of outer ring body all are arc transition setting, and the inner bottom of a plurality of stress dispersion grooves all are arc angle setting.

[0017] By the technical scheme, stress generated inside the outer ring body when extruded can be dispersed by the arc angle inside the stress dispersion groove, preventing stress concentration.

[0018] The utility model has the advantages of the following:

[0019] The ball bearing outer ring structure with stress dispersion grooves disclosed by the utility model sets stress dispersion grooves on the outer circumferential surface of the deep groove ball bearing outer ring, effectively changes the stress distribution state when the bearing works, disperses concentrated stress to the surrounding area, significantly reduces the degree of local stress concentration, and improves the bearing capacity of the bearing. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1Structure diagram of the embodiment one of the utility model;

[0021] Figure 2 Sectional view of the embodiment one of the utility model;

[0022] Figure 3 For Figure 2 Enlarged view of A in the middle;

[0023] Figure 4 Structure diagram of the embodiment two of the utility model;

[0024] Figure 5 Sectional view of the embodiment two of the utility model;

[0025] Figure 6 For Figure 5 Enlarged view of B in the middle.

[0026] In the figure: 1, outer ring body;2, raceway;3, stress dispersion groove. Specific implementation

[0027] The preferred embodiments of the utility model are described in detail below in combination with the drawings, so that the advantages and characteristics of the utility model can be more easily understood by those skilled in the art, and the protection scope of the utility model can be more clearly and explicitly defined.

[0028] As Figure 1 And Figure 4 A ball bearing outer ring structure with stress dispersion groove, including outer ring body 1, the inner circumferential surface middle part of outer ring body 1 is provided with raceway 2, the outer circumferential surface of outer ring body 1 is provided with a plurality of stress dispersion grooves 3 along the circumferential direction interval, a plurality of stress dispersion grooves 3 are all annularly arranged.

[0029] Embodiment one:

[0030] As Figure 2 And Figure 3As shown, the cross-sectional shape of the plurality of stress dispersion grooves 3 is semicircular, which can effectively disperse stress while avoiding the generation of new stress concentration points at the edges of the grooves, and is relatively simple in processing technology and low in cost. The depth of the plurality of stress dispersion grooves 3 is 1 / 4 of the wall thickness of the outer ring body 1, and the spacing between adjacent two stress dispersion grooves 3 is 8mm, which can maximize the stress dispersion effect while ensuring the structural strength of the outer ring. If the depth is too shallow, the stress cannot be effectively dispersed; if the depth is too deep, the overall strength of the outer ring will be weakened, affecting the normal use of the bearing. Reasonable spacing can make the stress dispersion grooves evenly disperse the stress borne by the outer ring, avoid stress concentration in the area between adjacent grooves due to too small spacing, or fail to fully cover the stress concentration position due to too large spacing. The plurality of stress dispersion grooves 3 and the outer circumferential surface of the outer ring body 1 are arc-shaped transitionally arranged, facilitating the connection of the outer wall of the outer ring body 1 with external connecting components, and the arc-shaped arrangement prevents damage to the outer wall of the outer ring body 1 during extrusion.

[0031] Example two:

[0032] As shown in Figure 5 and Figure 6 , the cross-sectional shape of the plurality of stress dispersion grooves 3 is V-shaped, which can reduce stress concentration, improve running stability and prolong service life, and has good effects on improving fatigue life. The depth of the plurality of stress dispersion grooves 3 is 1 / 5 of the wall thickness of the outer ring body 1, and the spacing between adjacent two stress dispersion grooves 3 is 6mm. This can prevent damage to the entire outer ring body 1 caused by too deep stress dispersion grooves 3, and reasonable spacing can improve stress dispersion of the outer ring body 1. The plurality of stress dispersion grooves 3 and the outer circumferential surface of the outer ring body 1 are arc-shaped transitionally arranged, and the inner bottom of the plurality of stress dispersion grooves 3 is arc-shaped, which facilitates the dispersion of the stress generated inside the outer ring body 1 through the arc-shaped inner bottom of the stress dispersion grooves 3 when the outer ring body 1 is extruded, preventing stress concentration.

[0033] The stress dispersion grooves 3 arranged on the outer circumferential surface of the outer ring can change the stress distribution state of the outer ring. The stress dispersion grooves 3 are equivalent to introducing a flexible structure in the high stress area. When stress is transmitted to the position of the groove, the stress will spread around the edge of the groove due to the existence of the groove, thereby reducing the degree of local stress concentration. For example, when the stress generated by the contact between the ball and the raceway 2 is transmitted to the outer ring body 1, the stress dispersion grooves 3 can disperse the stress to the outer ring material around the groove, making the stress distribution more uniform and reducing the risk of fatigue damage caused by stress concentration, thereby improving the service life of the entire outer ring body 1.

[0034] The above merely illustrates the embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which are made according to the content of the present application specification and drawings, are also included in the patent protection scope of the present application.

Claims

1. A ball bearing outer ring structure with stress dispersion groove, comprising an outer ring body (1), a raceway (2) is formed in the middle part of the inner circumferential surface of the outer ring body (1), characterized in that: A plurality of stress dispersion grooves (3) are arranged on the outer circumferential surface of the outer ring body (1) in a circumferential direction.

2. The ball bearing outer race structure with stress dispersion grooves according to claim 1, characterized in that: The cross-sectional shape of each of the plurality of stress dispersion grooves (3) is semicircular.

3. The ball bearing outer race structure with stress dispersion grooves according to claim 2, characterized in that: The depth of each of the plurality of stress dispersion grooves (3) is 1 / 4 of the wall thickness of the outer ring body (1), and the spacing between adjacent two stress dispersion grooves (3) is 8 mm.

4. The ball bearing outer race structure with stress dispersion grooves according to claim 3, characterized in that: The plurality of stress dispersion grooves (3) and the outer circumferential surface of the outer ring body (1) are both arc-shaped transitionally arranged.

5. The ball bearing outer race structure with stress dispersion grooves of claim 1, wherein: The cross-sectional shape of each of the plurality of stress dispersion grooves (3) is V-shaped.

6. The ball bearing outer race structure with stress dispersion grooves according to claim 5, characterized in that: The depth of each of the plurality of stress dispersion grooves (3) is 1 / 5 of the wall thickness of the outer ring body (1), and the spacing between adjacent two stress dispersion grooves (3) is 6 mm.

7. The ball bearing outer race structure with stress dispersion grooves according to claim 6, characterized in that: The plurality of stress dispersion grooves (3) and the outer circumferential surface of the outer ring body (1) are both arc-shaped transitionally arranged, and the inner bottom of each of the plurality of stress dispersion grooves (3) is arc-shaped.

Images