CN103742525A

CN103742525A - Bearing

Info

Publication number: CN103742525A
Application number: CN201310696673.0A
Authority: CN
Inventors: 严烈平; 岑伟; 严烈忠; 沈树建
Original assignee: NINGBO MOGEN BEARING CO Ltd
Current assignee: NINGBO MOGEN BEARING CO Ltd
Priority date: 2013-12-18
Filing date: 2013-12-18
Publication date: 2014-04-23

Abstract

The invention discloses a bearing. The bearing comprises a bearing outer ring, a bearing inner ring and a rolling ball; the bearing inner ring comprises a rolling ball groove; the rolling ball is arranged in the rolling ball groove consisting of a first circular arc surface box, a second circuit arc surface box and a sinking region positioned between the two circular arc surfaces; a clearance is formed between the sinking region of the rolling ball groove and the rolling ball; at least two mutually corresponding contact parts are formed between the rolling ball and the rolling ball groove. Compared with the prior art, according to the invention, because the rolling ball groove of the bearing inner ring consists of the two circular arc surfaces and the sinking region positioned between the two circular arc surfaces, and the clearance is formed between the sinking region of the rolling ball groove and the rolling ball, so that the bearing can bear radial load and axial load synchronously; when the bearing bears the axial load, the service life of the bearing is prolonged by 2-3 times than that of a common deep groove ball bearing.

Description

Bearing

Technical field

The present invention relates to a kind of bearing.

Background technique

Bearing is for determining running shaft and other part relative movement positions, plays the component of supporting or leading role.The major function of bearing is supporting rotating shaft or other moving body, and guiding rotation or moving movement also bears by axle or parts on shaft transmission and the load of coming.

Bearing is follow the appearance of mankind's industrial civilization and start to step into the arena of history.In 16th century, west starts to have risen the industrial revolution, and to mid-terms in 18th century, bearing starts to occur as mechanical component independently.To earlier 1900s, bearing technology has entered modern development period, has started to form bearing industry in large scale.Enter 21st century, bearing has been base parts and components indispensable in contemporary machinery, very extensive in the application of national economy every profession and trade, its precision, performance, life and reliability play conclusive effect to the precision of main frame, performance, life and reliability.

Current application more widely bearing has deep groove ball bearing, its ball grooves is generally semicircle, when bearing assemble, described semicircle ball grooves and ball are combined closely, however the thrust load that such setting makes bearing only can bear radial load and trace, when suffering from larger axis and impact to power, bearing is easy to be damaged, cause precision and the performance of bearing to reduce, meanwhile, also can greatly shorten the working life of bearing.

Summary of the invention

The present invention is directed to deficiency of the prior art, a kind of bearing is provided, make bearing can bear radial load and thrust load simultaneously, when bearing thrust load, its life-span is improved 2-3 doubly than common deep groove ball bearing.

In order to solve the problems of the technologies described above, the present invention is solved by following technical proposals: a kind of bearing, comprise bearing outer ring, bearing inner race and ball, described bearing inner race comprises ball grooves, described ball is arranged in ball grooves, described ball grooves is comprised of the first arc surface and the second arc surface and the sunk area between two sections of arc surfaces, between described ball grooves sunk area and described ball, there is gap, between described ball and described ball grooves, at least there are two corresponding contact positions mutually.Such setting makes bearing can bear radial load and thrust load simultaneously, when bearing thrust load, than common deep groove ball bearing life-span raising 2-3 doubly.

As preferably, above-mentioned sunk area is arc structure.Such setting, makes bearing when being subject to thrust load, can be to radial dispersion part load, thus the life-span of improving bearing.

The invention has the beneficial effects as follows: because the ball grooves of bearing inner race is comprised of two sections of arc surfaces and the sunk area between two sections of arc surfaces, between the sunk area of described ball grooves and described ball, there is gap, make bearing can bear radial load and thrust load simultaneously, when bearing thrust load, the life-span than the raising 2-3 of common deep groove ball bearing doubly.

Accompanying drawing explanation

Fig. 1 is the overall structure schematic diagram of bearing of the present invention.

Fig. 2 is the structural representation of the embodiment of the present invention 1 bearing inner race.

Fig. 3 is the structural representation of the embodiment of the present invention 2 bearing inner races.

Embodiment

Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail.

Embodiment 1: shown in Fig. 1 and Fig. 2, a kind of specific embodiment of bearing of the present invention: bearing comprises the bearing outer ring 1 coordinating with bearing inner race 3, ball 2 between bearing outer ring 1 and bearing inner race 3, and be set in the dust cover 4 between bearing outer ring 1 and bearing inner race 3, on ball 2, cover has bearing cage 5, described ball grooves 6 is comprised of the first arc surface 31 and the second arc surface 32 and the sunk area between two sections of arc surfaces 33, between described ball grooves sunk area 33 and described ball 2, there is gap, between described ball 2 and described ball grooves 6, at least there are two corresponding contact positions mutually, and described sunk area 33 is " V " character form structure, thereby leave gap between the sunk area 33 of the ball grooves 6 described in making and ball 2, there is offset in the ball grooves 6 that is arranged so that like this, and then bearing can bear radial load and thrust load simultaneously, when bearing thrust load, than common deep groove ball bearing life-span raising 2-3 doubly.

Embodiment 2: shown in Fig. 1 and Fig. 3, a kind of specific embodiment of bearing of the present invention: bearing comprises the bearing outer ring 1 coordinating with bearing inner race 3, ball 2 between bearing outer ring 1 and bearing inner race 3, and be set in the dust cover 4 between bearing outer ring 1 and bearing inner race 3, on ball 2, cover has bearing cage 5, described ball grooves 6 is comprised of the first arc surface 31 and the second arc surface 32 and the sunk area between two sections of arc surfaces 33, between the sunk area 33 of described ball grooves 6 and described ball 2, there is gap, between described ball 2 and described ball grooves 6, at least there are two corresponding contact positions mutually, and described sunk area 33 is arc structure, thereby leave gap between the sunk area 33 of the ball grooves 6 described in making and ball 2, the bearing that is arranged so that like this can bear radial load and thrust load simultaneously, when bearing thrust load, than common deep groove ball bearing life-span raising 2-3 doubly.

What more than enumerate is only two kinds of specific embodiments of the present invention, obviously, the invention is not restricted to above embodiment.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention, all should belong to protection scope of the present invention.

Claims

1. bearing, comprise bearing outer ring (1), bearing inner race (3) and ball (2), it is characterized in that: described bearing inner race (3) comprises ball grooves (6), described ball (2) is arranged in ball grooves (6), described ball grooves (6) is comprised of the first arc surface (31) and the second arc surface (32) and the sunk area between two sections of arc surfaces (33), between described sunk area (33) and described ball (2), there is gap, between described ball (2) and described ball grooves (6), at least there are two corresponding contact positions mutually.

2. bearing according to claim 1, is characterized in that: described sunk area (33) is arc structure.