CN203548579U

CN203548579U - Separated inner ring of tapered roller bearing

Info

Publication number: CN203548579U
Application number: CN201320332087.3U
Authority: CN
Inventors: 王晓明; 彭松; 邵元昭
Original assignee: LUOYANG SENNUO PRECISION BEARING Co Ltd
Priority date: 2013-06-09
Filing date: 2013-06-09
Publication date: 2014-04-16
Anticipated expiration: 2023-06-09

Abstract

The utility model relates to the technical field of a bearing structure, and discloses a separated inner ring of a tapered roller bearing. The separated inner ring of the tapered roller bearing comprises a separated inner ring body; the separated inner ring body is composed of a step inner ring and a small flange, which are combined to form a whole body; a recess step groove is formed in the outer diameter of a small end of the step inner ring; a convex step corresponding to a recess step on the inner ring is formed on the inner diameter of the small flange. According to the separated inner ring disclosed by the utility model, the tapered roller bearing can be simple to assemble, the procedures and steps are reduced, the labor intensity of a worker is relieved, the investment on die assembly is reduced, and the processing cost for assembling the bearing is saved. The separated inner ring has a significant effect for improving the rotation accuracy of the overall bearing, so that the qualified rate of the bearing can be greatly improved.

Description

A kind of divergence type inner ring for tapered roller bearing

Technical field

The utility model relates to bearing structure technical field, relates in particular to a kind of divergence type inner ring for tapered roller bearing.

Background technique

At present, existing conical bearing, little rib is all a part (seeing accompanying drawing 3) for inner ring structure.The bearing of this structure is before assembling, need on press machine, the small end size of retainer be expanded by dilatation mold, when retainer, fill after rolling element like this, inner ring can pack into smoothly, otherwise little rib will produce interference, causes inner ring to pack into.Through the holding device and must shrink on press machine again of expansion, make it to return to the original form.Through after this two procedures, just form inner ring assembly parts, and then outer ring is buckled, just completed the assembling of a whole set of bearing.Bearing through these operation assemblings exists following problem:

1. need the mould of the enlargement and contraction that manufactured size is suitable, increased the cost of bearing assemble

2. retainer, in enlargement and contraction operation, for having relatively high expectations of operator, easily produces waste product

3. through the retainer of enlargement and contraction, distortion can be produced unavoidably, the running accuracy of a whole set of bearing will be affected like this.For the very high conical bearing of precision requirement, retainer becomes a key factor of restriction running accuracy.

Summary of the invention

For overcoming the deficiencies in the prior art, the utility model provides a kind of divergence type inner ring for tapered roller bearing.

For achieving the above object, the utility model adopts following technological scheme:

For a divergence type inner ring for tapered roller bearing, comprising: separated type inner ring, described separated type inner ring consists of step inner ring and the little rib formula of being combined into one;

Wherein, on described step inner ring small end external diameter, be provided with a depression stepped slot; On the internal diameter of described little rib, be provided with one with boss rank that on inner ring, depression step is corresponding.

Owing to adopting technological scheme as above, the utlity model has following superiority:

For a divergence type inner ring for tapered roller bearing, the retainer inside of can be when tapered roller bearing assembles can be directly the inner ring with little rib not being put into fenestra and being filled rolling element, is then contained in little rib on the inner ring of bearing by heating.This structure before having avoided needs retainer small end to expand, and could, by the inner ring embedded situation with rolling element retainer the inside, can also save the operation that needs retainer to be retracted to the front size of expansion below.

The little rib of separable type of the present utility model has improved the loaded down with trivial details present situation of conical bearing assembly process, and there is large increase without the precision of the retainer of order two procedures later, thereby for the precision that improves solid bearing, there is very large effect, improved the up-to-standard rate of bearing.There is following superiority:

1. tapered roller bearing assembly process is simple, and process obviously reduces, and has alleviated workman's labor intensity.

2, tapered roller bearing dismounting is also more convenient, only need disassemble little rib, just can easily break bearing, can not destroy retainer, is convenient to replacing and the maintenance of bearing parts.During accompanying drawing 1 airframe bearing dismounting, need pressurizing machine by the expansion of retainer small end or cut retainer, just can break a whole set of bearing.

3, reduce the input of assembling mould, saved bearing assemble processing cost.

4, the machining accuracy of retainer easily guarantees, for the running accuracy that improves a whole set of bearing, has positive effect, and the up-to-standard rate of bearing can significantly promote.

Accompanying drawing explanation

Fig. 1 a is the step inner ring structure schematic diagram of tapered roller bearing divergence type inner ring; Fig. 1 b be in Fig. 1 a " " enlarged view;

Fig. 2 a is the little rib structure schematic diagram of tapered roller bearing divergence type inner ring; Fig. 2 b be in Fig. 2 a "

" enlarged view;

Fig. 3 is the structural representation after existing tapered roller bearing divergence type inner ring combination;

In figure: 1, inner ring, 1.1, depression stepped slot external diameter, 1.2, inner ring junction plane external diameter, 2, little rib, 2.1, boss rank internal diameter, junction plane internal diameter 2.2;

Embodiment

As shown in Fig. 1 a, Fig. 1 b, Fig. 2 a, Fig. 2 b, Fig. 3: a kind of divergence type inner ring for tapered roller bearing, comprising: separated type inner ring, described separated type inner ring consists of step inner ring 1 and little rib 2 formulas of being combined into one.On described step inner ring 1 small end external diameter, be provided with a depression stepped slot.On the internal diameter of described little rib 2, be provided with boss rank corresponding with depression step on inner ring 1.

For an associated methods for the divergence type inner ring of tapered roller bearing, comprising: processing method and assembling method, its step is as follows;

1),processing method,

A. processingstep inner ring 1, is processed with a depression step on inner ring 1 small end external diameter, comprising: the junction plane external diameter 1.2 of depression stepped slot external diameter 1.1 and inner ring and little rib;

B. processinglittle rib 2, little rib 2 is toroidal, is provided with boss rank corresponding with depression step on inner ring 1 on the internal diameter of little rib 2, comprising: the junction plane internal diameter 2.2 of boss rank internal diameter 2.1 and little rib and inner ring;

C. wherein, the internal diameter of little rib 2 is less than the small end external diameter of inner ring, and the boss rank internal diameter of little rib 2 is larger than the depression outer diameter of step of inner ring 1, in addition little rib epirelief step internal diameter is than the little 0.2-0.3mm of internal diameter, and the width of little rib 2 epirelief steps is than the little 0.1-0.2mm of depression stepped slot width of inner ring 1;

2 ), assembling method, method by hot charging is compressed into inner ring 1 small end with fore shaft by little rib 2, be about to little rib heating, temperature is between 120 to 150 degree, then by pressure unit, compress into the small end of inner ring, after making little rib 2 install on inner ring 1, the small end external diameter of little rib 2 internal diameters and inner ring 1 is interference fit, magnitude of interference according to bearing size operated by rotary motion between 0.2-0.3mm, the boss rank of little rib can be gripping into again in the depression stepped slot of inner ring simultaneously, the mode connecting overall that the interference fit of formation inner ring assembly parts and boss rank and depression stepped slot link closely, in the time of can avoiding little rib to be subject to impact force, from inner ring, come off.

On the external diameter of the small end of inner ring 1, there is a step, on the internal diameter of little rib 2, also there is a step, wherein, the internal diameter of little rib is less than the small end external diameter of inner ring, and the step internal diameter of little rib is larger than the outer diameter of step of inner ring, in addition little rib is topped bar internal diameter than the little 0.2-0.3mm of internal diameter, the width of step is than the little 0.1-0.2mm of stepped slot width of inner ring, after guaranteeing that so little rib installs on inner ring, the small end external diameter of little rib internal diameter and inner ring is interference fit, the magnitude of interference optical axis holds size generally between 0.2-0.3mm, the step of little rib can be gripping into again in the stepped slot of inner ring simultaneously, the mode linking closely by interference fit and step and groove like this, while having avoided little rib to be subject to impact force, from inner ring, come off.

Claims

1. for a divergence type inner ring for tapered roller bearing, it is characterized in that: comprising: separated type inner ring, described separated type inner ring consists of step inner ring (1) and little rib (2) formula that is combined into one;

Wherein, on described step inner ring (1) small end external diameter, be provided with a depression stepped slot; On the internal diameter of described little rib (2), be provided with boss rank corresponding with the upper depression step of inner ring (1).