CN218480062U

CN218480062U - Anti-run-ring ball bearing

Info

Publication number: CN218480062U
Application number: CN202222750501.4U
Authority: CN
Inventors: 洪斌
Original assignee: Wenzhou C&u Bearing Co ltd; Shanghai C&U Group Co Ltd; C&U Co Ltd
Current assignee: Wenzhou C&u Bearing Co ltd; Shanghai C&U Group Co Ltd; C&U Co Ltd
Priority date: 2022-10-18
Filing date: 2022-10-18
Publication date: 2023-02-14
Anticipated expiration: 2032-10-18

Abstract

The utility model provides a prevent race ball bearing, including outer lane, inner circle and a plurality of roller, a plurality of rollers roll and set up in the raceway that comprises outer lane and inner circle, the external diameter department of outer lane and/or the internal diameter department of inner circle be provided with annular and a plurality of spacing groove, spacing groove axial extension set up, and the interval of a plurality of spacing groove circumference is arranged at outer lane and/or interior circle, the annular is the cyclic annular setting of the centre of a circle unanimous with the centre of a circle of outer lane, and the annular sets up the axial middle part department of internal diameter of the axial middle part department of external diameter of outer lane and/or inner circle, and the external diameter of outer lane and/or the internal diameter of inner circle are formed with butt portion in the both sides department of annular. The utility model provides a to prior art not enough, the utility model provides a prevent race ring ball bearing, it can prevent that the bearing from running the circle, increases the life and the stability of bearing.

Description

Anti-race ball bearing

Technical Field

The utility model relates to a prevent race ball bearing.

Background

When the bearing is applied to an unmanned aerial vehicle gearbox or an automobile gearbox and similar working conditions, the bearing seat is made of aluminum and aluminum alloy materials or other materials with high thermal expansion coefficients, the thermal expansion coefficient of the bearing seat is higher than that of a bearing ring material at high temperature, so that the interference between the outer ring and the bearing seat or between the inner ring and the rotating shaft of the bearing is reduced, and in some cases, the interference between the outer ring and the bearing seat or between the inner ring and the rotating shaft of the bearing is smaller than zero, so that the outer ring slips to form a ring of the bearing.

SUMMERY OF THE UTILITY MODEL

The utility model provides a to prior art not enough, the utility model provides a prevent race ring ball bearing, it can prevent that the bearing from running the circle, increases the life and the stability of bearing.

In order to achieve the above object, the utility model provides a prevent race ball bearing, including outer lane, inner circle and a plurality of roller, a plurality of rollers roll and set up in the raceway that comprises outer lane and inner circle, the external diameter department of outer lane and/or the internal diameter department of inner circle be provided with annular and a plurality of spacing groove, spacing groove axial extension set up, and the interval of a plurality of spacing groove circumference is arranged on outer lane and/or inner circle, the annular is the cyclic annular setting that the centre of a circle is unanimous with the centre of a circle of outer lane, and the annular sets up at the axial middle part department of the internal diameter of the axial middle part department of external diameter of outer lane and/or inner circle, and the external diameter of outer lane and/or the internal diameter of inner circle are formed with butt portion in the both sides department of annular.

The technical scheme has the advantages that: the annular groove and the plurality of limiting grooves are arranged on the outer ring or the inner ring of the bearing or on the outer ring and the inner ring simultaneously, and the protruding parts on the gear box main body and/or the mandrel opposite to the limiting grooves extend into the limiting grooves to form clamping fit between the outer ring and the gear box main body and/or between the inner ring and the mandrel; the annular groove is formed in the outer diameter of the outer ring, so that in the interference fit process of the outer ring and the gear box body or the inner ring and the mandrel, a reaction force can generate mechanical stress in the bearing, when the interference between the outer ring and the gear box body or the interference between the inner ring and the mandrel is large, the mechanical stress is large, the operation of the bearing is affected, when the interference between the outer ring and the gear box body or the interference between the inner ring and the mandrel is small, the interference between the outer ring and the gear box body or the mandrel is further reduced due to the difference of the thermal expansion coefficients of materials of the gear box body and the bearing, and excessive pressure is brought to the protruding parts in the limiting groove and the gear box body or the mandrel, so that the actual contact area between the outer ring and the gear box body or the mandrel is reduced through the annular groove, and the interference between the abutting part and the gear box body or the mandrel is large under the condition that the mechanical stress is not changed, and the service life and the stability of the bearing are guaranteed on the basis of preventing the ring.

The utility model discloses can further set up to: and two ends of the limiting groove respectively extend to the end faces of two axial sides of the outer ring.

Through further setting, set the spacing groove into both ends and extend to outer lane axial both sides terminal surface department respectively, when the installation, the protruding part of gear box main part or dabber can directly be passed to the spacing groove, easy to assemble.

The utility model discloses can further set up to: the axial two ends of the limiting groove are consistent in width.

Through further setting, set the axial both ends of spacing groove to the width unanimity, the protruding portion of gear box main part or dabber can play the purpose easy to assemble with the axial sliding fit of spacing groove.

The utility model discloses can further set up to: the width of the ring groove is consistent with the width of the abutting part.

By further arrangement, the annular groove is specifically arranged to have the same width of the abutting part, so that the contact area of one third of the surface of the outer ring is reduced, and the interference between the abutting part and the gear box main body or the mandrel is ensured.

The utility model discloses can further set up to: the depth of the limiting groove is larger than that of the ring groove.

Through further setting up, because the spacing groove on outer lane or the inner circle need form the joint cooperation of circumference with the protruding portion of gear box main part or dabber, need provide the degree of depth and avoid deviating from, and the annular part then only need abdicate to there is crisscross between them, sets the degree of depth of spacing groove to being greater than the annular, makes the protruding portion of gear box main part or dabber also can be spacing with the spacing groove butt in the stagger department between them.

The utility model discloses can further set up to: the outer diameter surface roughness Ra of the outer ring is less than or equal to 0.63 mu m, the roundness is less than or equal to 5 mu m, and the straightness is less than or equal to 5 mu m.

Through further arrangement, the roundness, the roughness and the straightness of the outer diameter surface of the bearing outer ring are controlled, and the bearing outer ring is better matched with the gear box main body.

Drawings

Fig. 1 is a usage state diagram of the embodiment of the present invention;

FIG. 2 is a schematic structural diagram 1 of an outer ring in an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of an outer ring according to an embodiment of the present invention, FIG. 2;

wherein: an outer ring 1; a ring groove 11; a limiting groove 12; an abutting portion 13; an inner ring 2; a roller 3.

Detailed Description

The utility model relates to an anti-race ball bearing's embodiment is shown in figures 1-3: including outer lane 1, inner circle 2 and a plurality of roller 3, a plurality of rollers 3 roll and set up in the raceway that comprises outer lane 1 and inner circle 2, in this embodiment, only set up annular 11 and a plurality of spacing groove 12 in outer lane 1's external diameter department, spacing groove 12 axial extend set up, and the interval of a plurality of spacing groove 12 circumference is arranged on outer lane 1, annular 11 is the cyclic annular setting that the centre of a circle is unanimous with the centre of a circle of outer lane 1, and annular 11 sets up in the axial middle part department of outer lane 1's external diameter, and the external diameter of outer lane 1 is formed with butt portion 13 in the both sides department of annular 11.

The two ends of the limiting groove 12 extend to the end faces of the two axial sides of the outer ring 1 respectively, and the widths of the two axial ends of the limiting groove 12 are consistent.

The width of annular groove 11 is unanimous with the width of butt portion 13, the degree of depth setting that the degree of depth of spacing groove 12 is greater than annular groove 11.

The outer diameter surface roughness Ra of the outer ring 1 is less than or equal to 0.63 mu m, the roundness is less than or equal to 5 mu m, and the straightness is less than or equal to 5 mu m.

The above examples are only one of the preferred embodiments of the present invention, and the general changes and substitutions within the technical scope of the present invention are all included in the protection scope of the present invention.

Claims

1. The utility model provides a prevent race ball bearing, is including outer lane, inner circle and a plurality of roller, and a plurality of rollers roll and set up in the raceway that comprises outer lane and inner circle, its characterized in that: the external diameter department of outer lane and/or the internal diameter department of inner circle be provided with annular and a plurality of spacing groove, spacing groove axial extension set up, and the interval of a plurality of spacing groove circumference is arranged on outer lane and/or inner circle, the annular is the unanimous cyclic annular setting in the centre of a circle with the centre of a circle of outer lane, and the annular sets up in the axial middle part department of the external diameter of outer lane and/or the axial middle part department of the internal diameter of inner circle, the external diameter of outer lane and/or the internal diameter of inner circle are formed with butt portion in the both sides department of annular.

2. The anti-circling ball bearing according to claim 1, characterized in that: and two ends of the limiting groove respectively extend to the end faces of two axial sides of the outer ring.

3. The anti-race ball bearing according to claim 2, characterized in that: the axial two ends of the limiting groove are consistent in width.

4. The anti-race ball bearing according to claim 1, 2 or 3, characterized in that: the width of the ring groove is consistent with the width of the abutting part.

5. The retainer ball bearing according to claim 1, 2 or 3, wherein: the depth of the limiting groove is larger than that of the ring groove.

6. The retainer ball bearing according to claim 1, 2 or 3, wherein: the outer ring has an outer diameter surface roughness Ra of 0.63 μm or less, a roundness of 5 μm or less, and a straightness of 5 μm or less.