CN201671973U

CN201671973U - Bearing and cutting instrument

Info

Publication number: CN201671973U
Application number: CN2010201871740U
Authority: CN
Inventors: 王乃明
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-04-30
Filing date: 2010-04-30
Publication date: 2010-12-15
Anticipated expiration: 2020-04-30

Abstract

The utility model relates to the technical field of a bearing and discloses the bearing. The bearing comprises an outer ring, an inner ring, a retainer and a rolling body. The axis of the outer lateral surface of the outer ring takes a shape of an arc. In the bearing provided by the utility model, the axis of the outer lateral surface of the outer ring takes a shape of an arc, so that the contact area of the outer lateral surface of the outer ring of the bearing and a corresponding component of a cutting instrument is smaller, the bearing can well transmit torque when rotating at high speed, the bearing has stronger impact resistance and the generated noise is lower. The utility model also discloses the cutting instrument.

Description

A kind of bearing and cutting instrument

Technical field

The utility model relates to technical field of bearings, relates in particular to a kind of bearing.The utility model also relates to a kind of cutting instrument that above-mentioned bearing is installed.

Background technique

Bearing is modal a kind of component of machine, and bearing plays the effect of supporting rotating shaft, is applied to various mechanical transmission structures.

Bearing generally comprises inner ring, outer ring, rolling element and retainer, and inner ring is used for assembling mutually with the running shaft axle head, for running shaft provides support, and common roll channel in the inner ring outer side surface is provided with the spill that adapts with rolling element; The outer side surface of outer ring forms with fixed component and cooperates, and for the inner ring rotation provides the basis, the inner side surface in the outer ring is provided with the spill outer rolling passage that adapts with rolling element usually, just forms the complete roll channel of rolling element like this between inner ring and the outer ring; Rolling element is assemblied in the roll channel between inner ring and the outer ring, is the rolling friction campaign with the sliding friction conversion of motion of running shaft and fixed component, has reduced frictional force; Retainer and is separated from each other rolling element between rolling bearing inner ring and outer ring, to avoid the friction between the rolling element, guarantees that simultaneously rolling element remains on the appropriate location, makes each rolling element stressed evenly, improves the reliability of rolling bearing work.

The bearing that uses on the sheet metal class cutting instrument requires that bearing is shock-resistant, low noise and can transmitting torque.In the prior art, the outer side surface of the outer ring of bearing is the cylndrical surface, when the bearing of this structure is applied on the above-mentioned cutting instrument, because the outer side surface of the outer ring of bearing is the cylndrical surface, the outer ring of bearing is bigger with the area of contact of cutting corresponding part on the instrument, make bearing transmitting torque well when high speed rotating, the shock-resistant ability of bearing is relatively poor, and the noise that produces is also bigger; In order to cooperate with the outer ring of bearing, the parallelism of the parts that match with bearing outer ring on the cutting instrument is had relatively high expectations, thereby makes that the processing technology of cutting instrument is complicated, has increased cost of production.

In addition, the bearing that is applied on the cutting instrument is generally open bearing, and promptly the end face of bearing does not have bearing cap and seal ring, and the cutting instrument produces a large amount of dusts, foreign material in the course of the work, these dusts, foreign material will be easy to enter bearing inside, make that the working life of bearing is shorter.

The model utility content

First purpose of the present utility model provides a kind of bearing, and the area of contact of corresponding part is less on the outer ring of this bearing and the cutting instrument, bearing transmitting torque well when high speed rotating, and the shock-resistant ability of bearing is stronger, and the noise that is produced is also lower.

Second purpose of the present utility model provides a kind of cutting instrument.

In order to realize above-mentioned first purpose, the utility model provides a kind of bearing, comprises outer ring, inner ring, retainer and rolling element, and the axis of the outer side surface of described outer ring is curved.

Preferably, the outer side surface of described outer ring is a spherical structure.

Preferably, the side of described retainer is provided with dustproof face, and described dustproof end face direction towards described bearing is extended.

Preferably, described dustproof face is concordant with the end face of described outer ring.

Preferably, described retainer is the rubber-like plastic cage.

The bearing that the utility model provides, the axis of the outer side surface of its outer ring is curved, and the outer side surface of the outer ring of this bearing is less with the area of contact of corresponding part of cutting instrument, bearing transmitting torque well when high speed rotating, the shock-resistant ability of bearing is stronger, and the noise that is produced is also lower.

In the preferred version, the side of the retainer of above-mentioned bearing is provided with dustproof face, and this dustproof end face direction towards bearing is extended.The dustproof face of retainer can prevent that outside dust, foreign material from entering bearing inside, reduces the wearing and tearing of bearing, prolongs the working life of bearing.

In order to realize above-mentioned second purpose, the utility model also provides a kind of cutting instrument, and this cutting instrument is equipped with above-mentioned bearing, because above-mentioned bearing possesses above-mentioned technique effect, uses the cutting instrument of this bearing also should possess the corresponding techniques effect.

Description of drawings

Fig. 1 is a kind of structural representation of embodiment of the outer ring of bearing provided by the utility model;

Fig. 2 is a kind of structural representation of embodiment of the retainer of bearing provided by the utility model;

Fig. 3 is the cross-sectional view of retainer among Fig. 2;

Wherein, among Fig. 1-Fig. 3:

Outer ring 1, retainer 2, dustproof face 21.

Embodiment

First core of the present utility model provides a kind of bearing, and the area of contact of corresponding part is less on the outer ring of this bearing and the cutting instrument, bearing transmitting torque well when high speed rotating, and the shock-resistant ability of bearing is stronger, and the noise that is produced is also lower.

Second core of the present utility model provides a kind of cutting instrument.

In order to make those skilled in the art better understand the technical solution of the utility model, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Please referring to Fig. 1, Fig. 2, Fig. 3, Fig. 1 is a kind of structural representation of embodiment of the outer ring of bearing provided by the utility model; Fig. 2 is a kind of structural representation of embodiment of the retainer of bearing provided by the utility model; Fig. 3 is the cross-sectional view of retainer among Fig. 2.

The bearing that the utility model provides comprises outer ring 1, inner ring, retainer 2 and rolling element; The inner ring outer side surface is provided with roll channel in the spill that adapts with rolling element, outer ring 1 inner side surface is provided with the spill outer rolling passage that adapts with rolling element, just form the complete roll channel of rolling element between inner ring and the outer ring 1, rolling element is assemblied in the roll channel between inner ring and the outer ring 1, retainer 2 is between rolling bearing inner ring and outer ring, and rolling element is separated from each other, to avoid the friction between the rolling element, guarantee that simultaneously rolling element remains on the appropriate location, make each rolling element stressed evenly, improve the reliability of rolling bearing work.Wherein, the relation that is provided with between inner ring, rolling element and each parts is little with inventive point relation of the present utility model, is prior art, no longer is described in detail at this.

Please referring to Fig. 1, the axis of the outer side surface of the outer ring 1 of the bearing that the utility model provides is curved, and the fixed component and the outer ring 1 formation point that assemble with outer ring 1 contact, and outer ring 1 is less with the area of contact of fixed component.

The outer side surface of the outer ring of bearing of the prior art is the cylndrical surface, contacting between fixed component and the outer ring is the line contact, the area of contact of outer ring and fixed component is bigger, because the outer ring 1 and the area of contact between the fixed component of the bearing that the utility model provides are less, bearing transmitting torque well when high speed rotating, the shock-resistant ability of bearing is stronger, and the noise that is produced is also lower.

In addition, less demanding because the axis of the outer side surface of outer ring 1 is curved with the parallelism of the corresponding fixed component of outer side surface of outer ring 1, make the processing technology of surface of contact of fixed component require lower.

In the preferred version, the outer side surface of outer ring 1 can be spheric structure, and as shown in Figure 1, the outer side surface of outer ring 1 can be the spheric structure of R for radius, and the big I of radius R is provided with arbitrarily as required.

The outer ring of the bearing that the utility model provides can be processed by following method:

Process cycle blank; The angle of swing that will be used for the trimmer of trimming wheel is adjusted to required angle, adopt diamond pen that emery wheel is carried out reconditioning, after reconditioning after a while, emery wheel is become the groove shaped structure by reconditioning, and the spheric structure of the outer side surface of described groove shaped structure and outer ring to be processed adapts; The groove shaped structure of emery wheel is processed the outer side surface of outer ring, can process the outer ring of bearing provided by the utility model.

In the preferred version, the side of the retainer 2 of the bearing that the utility model provides also is provided with dustproof face.As Fig. 2, shown in Figure 3, for the end face that solves open bearing is not provided with bearing cap, seal ring, and cause external dust, foreign material to enter the problem of bearing inside easily, the bearing that the utility model provides, be provided with dustproof face 21 in the side of its retainer 2, should dustproof end face direction extend, can stop that external dust, foreign material enter the structure of bearing inside in the formation of the end of bearing towards bearing.This structure can prevent that outside dust, foreign material from entering bearing inside, reduces the wearing and tearing of bearing, prolongs the working life of bearing.

In the preferred version, the dustproof face 21 of retainer 2 can be concordant with the end face of the outer ring 1 of bearing.This structure neither increases the face size of bearing, again can be farthest the end face of bearing be sealed.

In the preferred version, retainer can adopt plastic cage, and plastic cage has certain elasticity, has higher shock-resistant ability.

The utility model also provides a kind of cutting instrument, this cutting instrument is equipped with above-mentioned bearing, the axis of the outer side surface of the outer ring of described bearing is curved, the outer side surface of the outer ring of this bearing is less with the area of contact of the corresponding part of cutting instrument, bearing transmitting torque well when high speed rotating, the shock-resistant ability of bearing is stronger, and the noise that is produced is also lower.

In addition, because the axis of the outer side surface of outer ring 1 is curved, less demanding with the parallelism of the corresponding part of the corresponding cutting instrument of the outer side surface of outer ring 1, make the processing technology of corresponding part of cutting instrument require lower, compared with prior art, can cut down finished cost.

The above only is the description of the preferred implementation of model utility; should be understood that; because the finiteness of literal expression; and objectively have unlimited concrete structure; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims

1. a bearing comprises outer ring, inner ring, retainer and rolling element, it is characterized in that, the axis of the outer side surface of described outer ring is curved.

2. bearing according to claim 1 is characterized in that, the outer side surface of described outer ring is a spherical structure.

3. bearing according to claim 1 is characterized in that the side of described retainer is provided with dustproof face, and described dustproof end face direction towards described bearing is extended.

4. bearing according to claim 2 is characterized in that, described dustproof face is concordant with the end face of described outer ring.

5. bearing according to claim 2 is characterized in that, described retainer is the rubber-like plastic cage.

6. a cutting instrument is characterized in that, this cutting instrument is equipped with each described bearing of claim 1-5.