CN211117114U - Large-load high-speed precision angular contact ball bearing - Google Patents

Abstract

The utility model discloses a high-speed accurate angular contact ball bearing of heavy load, including outer lane, inner circle and steel ball, form a bearing feeler angle a between the line of the contact point of steel ball and inner and outer lane annular channel and the bearing radial plane, this bearing contact angle a equals 32 °; the outer ring comprises a first outer ring and a second outer ring which are axially arranged side by side, the narrow end faces of the first outer ring and the second outer ring are opposite, the inner peripheral surfaces of the first outer ring and the second outer ring are respectively provided with an annular channel, and the outer peripheral surface of the inner ring is provided with an annular channel corresponding to the annular channels of the first outer ring and the second outer ring; or the inner ring comprises a first inner ring and a second inner ring which are axially arranged side by side, the narrow end faces of the first inner ring and the second inner ring are opposite, the outer peripheral surfaces of the first inner ring and the second inner ring are respectively provided with an annular channel, and the inner peripheral surface of the outer ring is provided with an annular channel corresponding to the annular channels of the first inner ring and the second inner ring. The utility model discloses can keep high speed performance, can satisfy bearing capacity's requirement again.

Description

Large-load high-speed precision angular contact ball bearing

The technical field is as follows:

The utility model relates to a bearing, especially a high-speed accurate angular contact ball bearing of heavy load.

Background art:

High-speed precision angular contact ball bearings are one of the most important mechanical base parts and bearing types with the most extensive applications due to their good speed, precision and rigidity properties. Modern machine tools develop towards high speed, high precision, high reliability and greening, a main shaft bearing is used as a key precision support of a main shaft system of the machine tool, the precision, the rigidity, the service life, the reliability and the production efficiency of a main machine are directly influenced by the performance of the main shaft bearing, and the main machine plays a role in playing a great role in the development level of the main machine. Modern products are high in precision, diversified in representation and continuously improved in machining efficiency, and a machine tool spindle system is required to have enough rigidity or bearing capacity and excellent precision retentivity while having high-speed performance.

Therefore, the comprehensive performance of the precision angular contact ball bearing is optimized, the contradiction between the speed performance and the rigidity performance or the bearing capacity is unified, and the method becomes the key point and the development direction of the depth research of the precision high-speed angular contact ball bearing.

The invention content is as follows:

For the problem of overcoming current accurate angular contact ball bearing and can't realize bearing high speed performance and rigidity performance or the good matching of bearing capacity, the embodiment of the utility model provides a high-speed accurate angular contact ball bearing of heavy load.

The high-load high-speed precise angular contact ball bearing at least comprises an outer ring, an inner ring and a steel ball arranged between the outer ring and the inner ring, wherein a bearing contact angle a is formed between a connecting line of contact points of the steel ball and annular channels of the inner ring and the outer ring and a radial plane of the bearing, and the contact angle a of the bearing is 32 degrees;

One end of the outer ring is provided with a wide end face, and the other end of the outer ring is provided with a narrow end face; the outer ring comprises a first outer ring and a second outer ring which are axially arranged side by side, the narrow end faces of the first outer ring and the second outer ring are opposite, the inner peripheral surfaces of the first outer ring and the second outer ring are respectively provided with an annular channel, and the outer peripheral surface of the inner ring is provided with an annular channel corresponding to the annular channels of the first outer ring and the second outer ring; or

One end of the inner ring is provided with a wide end face, and the other end of the inner ring is provided with a narrow end face; the inner ring comprises a first inner ring and a second inner ring which are axially arranged side by side, the narrow end faces of the first inner ring and the second inner ring are opposite, annular channels are respectively arranged on the outer peripheral surfaces of the first inner ring and the second inner ring, and annular channels corresponding to the annular channels of the first inner ring and the second inner ring are respectively arranged on the inner peripheral surface of the outer ring.

the embodiment of the utility model provides a, through the research analysis and the test contrast of system, when the bearing feeler a got 32, can realize that bearing high-speed performance and rigidity performance or bearing capacity well match, can keep specific high-speed performance (dmN is more than or equal to 1.0 × 10 ⁶) And the requirement of bearing capacity can be met.

Description of the drawings:

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a heavy-load high-speed precision angular contact ball bearing according to a first embodiment of the present invention;

Fig. 2 is a schematic structural view of a heavy-load high-speed precision angular contact ball bearing according to a second embodiment of the present invention;

Fig. 3 is a schematic structural view of a high-load high-speed precision angular contact ball bearing according to a third embodiment of the present invention.

The specific implementation mode is as follows:

In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to further explain the present invention in detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The first embodiment is as follows: as shown in fig. 1, the heavy-load high-speed precision angular contact ball bearing at least comprises an outer ring 1, an inner ring 2 and steel balls 3 arranged between the outer ring 1 and the inner ring 2, wherein a bearing contact angle a is formed between a connecting line of contact points of the steel balls 3 and annular grooves of the inner ring and the outer ring and a radial plane of the bearing, and the bearing contact angle a is 32 degrees.

the embodiment of the utility model provides a, through the research analysis and the test contrast of system, when the bearing feeler a got 32, can realize that bearing high-speed performance and rigidity performance or bearing capacity well match, can keep specific high-speed performance (dmN is more than or equal to 1.0 × 10 ⁶) And the requirement of bearing capacity can be met.

Further, as a preferred embodiment of the present invention, but not limited thereto, as shown in fig. 1, one end of the outer ring 1 has a wide end surface, and the other end thereof has a narrow end surface.

Still further, as a preferred embodiment of the present invention, but not limited thereto, as shown in fig. 1, one end of the inner ring 2 has a wide end surface, and the other end thereof has a narrow end surface, the wide end surface of the inner ring 2 and the narrow end surface of the outer ring 1 are located on the same side, and the narrow end surface of the inner ring 2 and the wide end surface of the outer ring 1 are located on the same side.

Further, as a preferred embodiment of the present invention, but not limited thereto, as shown in fig. 1, a retainer engaged with the steel balls 3 is further provided between the outer ring 1 and the inner ring 2.

Example two: as shown in fig. 2, the difference from the first embodiment is that the inner ring in the first embodiment is a double inner ring, and the double inner ring includes a first inner ring 21 and a second inner ring 22 which are axially arranged side by side, the narrow end surfaces of the first inner ring 21 and the second inner ring 22 are opposite, annular channels are respectively formed on the outer peripheral surfaces of the first inner ring 21 and the second inner ring 22, annular channels corresponding to the annular channels of the first inner ring 21 and the second inner ring 22 are respectively formed on the inner peripheral surface of the outer ring 1, and two rows of steel balls 3 are arranged on the annular channels between the outer ring and the inner ring.

Example three: as shown in fig. 3, the difference from the first embodiment is that the outer ring in the first embodiment is a double outer ring, and includes a first outer ring 11 and a second outer ring 12 which are axially arranged side by side, narrow end faces of the first outer ring 11 and the second outer ring 12 are opposite, annular grooves are respectively formed on inner circumferential surfaces of the first outer ring 11 and the second outer ring 12, annular grooves corresponding to the annular grooves of the first outer ring 11 and the second outer ring 12 are respectively formed on an outer circumferential surface of the inner ring 2, and two rows of steel balls 3 are arranged on the annular grooves between the outer ring and the inner ring.

The foregoing is illustrative of one or more embodiments provided in connection with the detailed description and is not to be construed as limiting the invention to the precise embodiments disclosed herein. All with the utility model discloses a method, structure etc. are similar, the same, or to the utility model discloses make a plurality of technological deductions or replacement under the design prerequisite, all should regard as the utility model discloses a protection scope.

Claims (2)

1. The high-load high-speed precision angular contact ball bearing at least comprises an outer ring, an inner ring and a steel ball arranged between the outer ring and the inner ring, wherein a bearing contact angle a is formed between a connecting line of contact points of the steel ball and annular channels of the inner ring and the outer ring and a radial plane of the bearing, and the bearing contact angle a is 32 degrees;

One end of the outer ring is provided with a wide end face, and the other end of the outer ring is provided with a narrow end face; the outer ring comprises a first outer ring and a second outer ring which are axially arranged side by side, the narrow end faces of the first outer ring and the second outer ring are opposite, the inner peripheral surfaces of the first outer ring and the second outer ring are respectively provided with an annular channel, and the outer peripheral surface of the inner ring is provided with an annular channel corresponding to the annular channels of the first outer ring and the second outer ring; or

One end of the inner ring is provided with a wide end face, and the other end of the inner ring is provided with a narrow end face; the inner ring comprises a first inner ring and a second inner ring which are axially arranged side by side, the narrow end faces of the first inner ring and the second inner ring are opposite, annular channels are respectively arranged on the outer peripheral surfaces of the first inner ring and the second inner ring, and annular channels corresponding to the annular channels of the first inner ring and the second inner ring are respectively arranged on the inner peripheral surface of the outer ring.

2. A heavy-load high-speed precision angular contact ball bearing according to claim 1, wherein a retainer matched with the steel balls is further provided between the outer ring and the inner ring.

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