CN201228732Y

CN201228732Y - Axial movement type rolling bearing

Info

Publication number: CN201228732Y
Application number: CNU2008200531636U
Authority: CN
Inventors: 李春光
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-05-16
Filing date: 2008-05-16
Publication date: 2009-04-29
Anticipated expiration: 2018-05-16

Abstract

An axially mobile rolling bearing comprises a bearing inner ring, a bearing outer ring and a rolling body matching with the inner ring and the outer ring mutually, wherein the effect working stroke L of the bearing inner ring or the bearing outer ring is longer than the working stroke of the corresponding adapted outer ring or the corresponding adapted inner ring. By utilizing the technical scheme of arranging the rolling bearing capable of axially moving in a electromechanical rotator, and enabling the effective working stroke L of the bearing inner ring or the bearing outer ring to be longer than the working stroke of the corresponding adapted inner ring and the corresponding adapted outer ring, weaknesses of high requirements upon engagement precision, complicate structure, large volume, low efficiency and high cost which are caused by adding linear motion device in the rotator of the existing rolling bearing are overcome. The axially mobile rolling bearing is adaptable to rolling bearings which require axial linear motion in various electromechanical rotators.

Description

The axial motion type rolling bearing

Technical field

The utility model relates to a kind of bearing, especially a kind of axial motion type rolling bearing.

Background technique

Existing rolling bearing supporting is widely used in machinery, electrical equipment, the electronics solid of rotation (first-class as motor, cutting), but they have only point-supported function, need certain rotational speed and swivel bearing power when being supported body, and under the situation that sliding supported condition can not meet the demands, simultaneously need to do axial straight line again and move, at this moment, only set up a cover linear motion device, for example nut, screw type planker, the oil pressure first-class equipment that stretches.The defective of this linear motion device is: (1) is subjected to the restriction of planker dovetail hole, groove and screw rod, the requirement of nut quality of fit; (2) volume is big, and quality is heavy, and feed consumption is many, complex structure, and the occupation of land space that has increased equipment has increased cost of production; (3) use trivial operations, manufacturing efficiency is low; (4) driving force is big, the height of controlling cost automatically.

Summary of the invention

At above-mentioned situation, the purpose of this utility model provides a kind of axial motion type rolling bearing, and it both can realize the radially spinfunction that solid of rotation has had, can realize axial straight line locomotive function again, and simple in structure, easy to operate, the service precision height, cost of production is low.

For achieving the above object, a kind of axial motion type rolling bearing, it comprises bearing inner race, bearing outer ring and their mutual adaptive rolling elements (as ball or roller etc.), and effective working stroke L of its bearing inner race or bearing outer ring is longer than its adaptive corresponding outer ring or corresponding inner ring.

For implementation structure optimization, its further step is: corresponding outer ring is a bearing outer ring, and it is adaptive through rolling element (as ball or roller etc.) and bearing inner race.Corresponding inner ring is a bearing inner race, and it is adaptive through rolling element (as ball or roller etc.) and bearing outer ring.Effective working stroke L of bearing inner race or bearing outer ring is the axial active length of bearing inner race or bearing outer ring.Effective working stroke L of bearing inner race or bearing outer ring is longer than its adaptive corresponding outer ring or more than 0.2 times of corresponding inner ring.

The utility model adopts that be provided with can axially movable rolling bearing in dynamo-electric solid of rotation, and effective working stroke L of bearing inner race or bearing outer ring is longer than its adaptive corresponding outer ring or the technological scheme of corresponding inner ring, has overcome and to have set up in the solid of rotation of existing rolling bearing supporting that the quality of fit that linear motion device brings requires height, complex structure, volume is big, efficient is low, defect of high cost.

The beneficial effect that the utility model is had compared to existing technology:

(1) increased the function of the dynamo-electric solid of rotation of rolling bearing supporting, this function both can realize the radially spinfunction that solid of rotation has had, can realize the linear reciprocation function that axial straight line moves again;

(2) simple in structure, saved numerous and jumbled and carriage part that take more space, it is more convenient to operate, safeguard;

(3) restriction that requires of no planker dovetail hole, groove and screw rod, nut quality of fit has improved service precision, has reduced cost of production;

(4) simplify assembly technology, improved efficiency of installing software;

(5) reduce the required driving force of forward and back, reduced the cost of automatic control.

It is suitable in all kinds of dynamo-electric solid of rotation and also requires to do the rolling bearing supporting that axial straight line moves.

Description of drawings

Fig. 1 is the plan view of axial motion type rolling bearing.

Fig. 2 is applied to schematic representation in the axial straight line mobile motor for the axial motion type rolling bearing.

Among the figure: 1, bearing inner race, 2, bearing outer ring, 3, rolling element, 4, front cover, 5, rotor axis of electric, 6, the rotor core, 7, motor stator, 8, controlling device, 9, rear end cover.

Embodiment

Referring to accompanying drawing, a kind of axial motion type rolling bearing, it comprises bearing inner race 1, bearing outer ring 2 and their mutual adaptive rolling elements (as ball or roller etc.) 3, and effective working stroke L of bearing inner race 1 or bearing outer ring 2 is longer than its adaptive corresponding outer ring or corresponding inner ring.The radially function of rotation in order to realize that solid of rotation and bearing have had can realize the function that solid of rotation and bearing shaft move to straight line again, and corresponding outer ring is a bearing outer ring 2, and it is adaptive through rolling element (as ball or roller etc.) 3 and bearing inner race 1; Corresponding inner ring is a bearing inner race 1, and it is adaptive through rolling element (as ball or roller etc.) 3 and bearing outer ring 2.In a word, the fitting relation between 2 two of bearing inner race 1 or the bearing outer rings is that one is long and the other is short mutually, and as making driving link with bearing inner race 1, then bearing outer ring 2 is exactly a Passive part; In order to realize the multi-functional of bearing, this adaptive relation is that bearing inner race 1 is longer than the axial active length of bearing outer ring 2 zero point more than several times, and present embodiment is more than 0.2 times.Otherwise bearing outer ring 2 is made driving link, and bearing inner race 1 is exactly a Passive part; This adaptive relation is that bearing outer ring 2 is longer than the axial active length of bearing inner race 1 zero point more than several times.

Working principle of the present utility model:

Referring to accompanying drawing 2, axial straight line mobile motor, two cover outer ring 2 and rolling elements 3 with the utility model axial motion type rolling bearing, be respectively charged in the front cover 4 and the bearing chamber of rear end cover 9 in, two bearings inner ring 1 is installed in 5 liang of supporting points of rotor axis of electric, because rotor core 6 is longer than motor stator 7, adjustable rotor advances on the rear end cover 9 when being arranged on by adjusting, the controlling device 8 of moving back just, during counter-rotating, bearing inner race 1 on the rotor axis of electric 5 in the front cover 4 and in the rear end cover 9 bearing outer ring 2 and rolling element 3 or advance or move back, realize the axial straight line locomotive function of solid of rotation and spinfunction radially.

Below only be preferred embodiment of the present utility model, according to above-mentioned design of the present utility model, those skilled in the art also can make various modifications and conversion to this, for example, and modification and the conversion of effective working stroke L of bearing inner race or bearing outer ring etc.Yet similar this conversion and modification all belong to essence of the present utility model.

Claims

1, a kind of axial motion type rolling bearing, it comprises bearing inner race (1), bearing outer ring (2) and their mutual adaptive rolling elements (3), and the effective working stroke (L) that it is characterized in that bearing inner race (1) or bearing outer ring (2) is to be longer than its adaptive corresponding outer ring or corresponding inner ring.

2, axial motion type rolling bearing according to claim 1 is characterized in that corresponding outer ring is bearing outer ring (2), and it is adaptive with bearing inner race (1) through rolling element ball or roller (3).

3, axial motion type rolling bearing according to claim 1 is characterized in that corresponding inner ring is bearing inner race (1), and it is adaptive with bearing outer ring (2) through rolling element ball or roller (3).

4, axial motion type rolling bearing according to claim 1 is characterized in that the axial active length of effective working stroke (L) of bearing inner race (1) or bearing outer ring (2) for bearing inner race (1) or bearing outer ring (2).

5, axial motion type rolling bearing according to claim 1, the effective working stroke (L) that it is characterized in that bearing inner race (1) or bearing outer ring (2) are to be longer than its adaptive corresponding outer ring or more than 0.2 times of corresponding inner ring.