CN209414388U - A kind of ball bearing - Google Patents

Abstract

This application involves technical field of bearings, and disclose a kind of ball bearing, the outside of the inner ring is sheathed on including inner ring, outer ring and spin, the outer ring, the spin is arranged between the outer ring and the inner ring, it further include the connecting shaft for having end for being connected with drive shaft, the connecting shaft is located in the inner ring, and the inner ring and the connecting shaft are in integral structure.So set, solve existing bearing and axis needs installation fixation, and it is time-consuming and laborious and fixed unstable, it be easy to cause bearing to loosen with axis, ball bearing with axis when installing, it is difficult to the problem of connecting axis with bearing.

Description

A kind of ball bearing

Technical field

This application involves technical field of bearings, more specifically to a kind of ball bearing.

Background technique

With the continuous progress of science and technology, in mechanical manufacturing field, bearing using more and more extensive, bearing is a kind of use In determine rotary shaft and other parts relative motion position, the components of bearing or guiding role, be that carrying gravity, transmitting are dynamic The component of power.

The roller bearing being commonly used cannot bear axial force for bearing biggish radial force, roller bearing because Rolling element is cylinder, is contacted with seat ring for line, therefore friction factor is big, and the big calorific value of frictional resistance is big, so limit speed is lower； Thrust bearing, centrifugal force is big when high speed, steel ball and retainer abrasion fever are serious, the service life is low therefore limit speed is low, therefore, turns Speed is higher, and load is smaller, it is desirable that when running accuracy is higher, preferably selects ball bearing.And existing ball bearing is pacified when installing with axis Dress is difficult, time-consuming and laborious, it is difficult to connect axis and bearing, the connection installed between rear bearing and axis is unstable, is easy to make It falls off from axis at bearing, so that bearing can not play the role of carrying gravity, transmitting power.

Therefore, how to solve existing bearing and axis is needed to install and be fixed, it is time-consuming and laborious and fixed unstable, it be easy to cause axis It holds and is loosened with axis, ball bearing with axis when installing, it is difficult to which the problem of connecting axis and bearing becomes those skilled in the art Institute's important technological problems to be solved.

Utility model content

To be overcome the problems, such as present in the relevant technologies at least to a certain extent, the application's is designed to provide a bulb Bearing, is able to solve existing bearing and axis is needed to install and be fixed, time-consuming and laborious and fixed unstable, be easy to cause bearing and axis It loosens, ball bearing with axis when installing, it is difficult to the problem of connecting axis and bearing.

The utility model provides a kind of ball bearing, including inner ring, outer ring and spin, the outer ring are sheathed on the inner ring Outside, it further includes having end for being connected with drive shaft that the spin, which is arranged between the outer ring and the inner ring, Connecting shaft, the connecting shaft are located in the inner ring, and the inner ring and the connecting shaft are in integral structure.

Preferably, two the first parallel raceways, the outer circle of the inner ring are provided on the inner peripheral surface of the outer ring Two the second parallel raceways are provided on circumferential surface, two first raceways are oppositely arranged with two second raceways, The spin is arranged between first raceway and second raceway.

Preferably, the first camber line and the second camber line are respectively included on the section of two first raceways, described first The radius of curvature of camber line and second camber line is all larger than the radius of the spin, the spin respectively with first camber line and Second camber line contact, respectively includes third camber line and the 4th camber line on the section of two articles of second raceways, and described the The radius of curvature of three camber lines and the 4th camber line is all larger than the radius of the spin, the spin respectively with the third camber line and institute State the contact of the 4th camber line.

Preferably, the outside wall surface of the outer ring is cambered surface.

Preferably, the outside wall surface of the outer ring is cylindrical surface.

Preferably, external screw thread is provided on the end outer wall of the connecting shaft.

Preferably, one end of the connecting shaft stretches out that the inner ring is outer, is used for and the driving axis connection, the other end and institute Inner ring end is stated to be flush.

Preferably, the both ends of the connecting shaft stretch out that the inner ring is outer, is used for and the driving axis connection.

Preferably, first camber line and second camber line are oppositely arranged relative to the center line of first raceway, The radius of curvature of first camber line and second arc is equal.

It preferably, further include retainer, the retainer is set between the outer ring and the inner ring, and the spin is set It is placed in the pocket hole of the retainer.

The technical solution that embodiments herein provides can include the following benefits:

This application provides the outsides that a kind of ball bearing, including inner ring, outer ring and spin, outer snare enclose inside, and roll Ball is arranged between outer ring and inner ring, to form bearing body, can carry gravity, transmits power；It is connected in inner ring Spindle, connecting shaft and inner ring are in integral structure, and the end of connecting shaft can with driving axis connection, in this way, passing through connection Axis and driving axis connection cooperate difficult ask so set, solving axis and installing with bearing to make inner ring and driving axis connection Topic, inner ring are rotated with the rotation of drive shaft, strengthen the stability of bearing and axis connection, prevent bearing and axis from loosening, dividing From.

It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not The application can be limited.

Detailed description of the invention

The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the application Example, and together with specification it is used to explain the principle of the application.

Fig. 1 is that (connecting shaft both ends are used to connect a kind of ball bearing structure schematic diagram shown according to an exemplary embodiment The outside wall surface for connecing drive shaft and outer ring is cambered surface)；

Fig. 2 is that (connecting shaft both ends are used to connect a kind of ball bearing structure schematic diagram shown according to an exemplary embodiment The outside wall surface for connecing drive shaft and outer ring is cylindrical surface)；

Fig. 3 is that (one end of connecting shaft is for connecting for a kind of ball bearing structure schematic diagram shown according to an exemplary embodiment The outside wall surface for connecing drive shaft and outer ring is cambered surface)；

Fig. 4 is that (one end of connecting shaft is for connecting for a kind of ball bearing structure schematic diagram shown according to an exemplary embodiment The outside wall surface for connecing drive shaft and outer ring is cylindrical surface)；

Fig. 5 is a kind of structural schematic diagram of the outer ring of ball bearing shown according to an exemplary embodiment.

In figure:

The outer ring 1-, 2- spin, 3- connecting shaft, 4- retainer, 5- sealing cover, the first raceway of 6-, the first camber line of 7-, 8- second Camber line.

Specific embodiment

Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they be only with it is such as appended The example of the consistent device and method of some aspects be described in detail in claims, the application.

Referring to attached drawing 1-5, present embodiment provides a kind of ball bearing, including inner ring, outer ring 1 and spin 2, outer ring 1 set of outside in inner ring, and spin 2 is arranged between outer ring 1 and inner ring, to form bearing body, gravity can be carried, Transmit power；Connecting shaft 3 is connected in inner ring, as shown in Figure 1, connecting shaft 3 and inner ring are in integral structure, and connecting shaft 3 End can with driving axis connection, in this way, by connecting shaft 3 and driving axis connection, thus make inner ring and driving axis connection, this Sample solves the problems, such as that axis and bearing installation cooperation are difficult, and inner ring is rotated with the rotation of drive shaft, and improve connection can By property, the axis of connecting shaft 3 is overlapped with the pivot center of inner ring, and prevents bearing from loosening, separating with axis.

In the present embodiment, it is provided with two the first raceways 6 on the inner peripheral surface of outer ring 1, is arranged on the outer circumference surface of inner ring There are two the second raceways, two the first raceways 6 and two the second raceways are parallel, and the first raceway 6 and the second raceway are opposite Setting, spin 2 are arranged between the first raceway 6 and the second raceway, such spin 2 can the first raceway 6 and the second raceway it Between roll, sufficiently solve the problems, such as that revolving speed is low, be arranged biserial spin 2, increase the bearing capacity of bearing and improve bearing Stability.

In order to solve the problems, such as spin 2 in, two first rollings big with radial load suffered by the contact point of inner ring or outer ring 1 Respectively include the first camber line 7 and the second camber line 8 on the section in road 6, the radius of curvature of the first camber line 7 and the second camber line 8 is all larger than The radius of spin 2, and making spin 2 respectively is that a point contact, i.e. spin 2 and first are rolled with the first camber line 7 and the second camber line 8 There is two-point contact in road 6；Third camber line and the 4th camber line, third camber line and the 4th arc are respectively included on the section of two article of second raceway Curvature of a curve radius is all larger than the radius of spin 2, and make spin 2 respectively with one point contact of third camber line and the 4th camber line, That is spin 2 and the second raceway has two-point contact.In this way, every the first raceway 6, the second raceway are all each, there are two points and each spin 2 face that is in rolling contact is in contact, and hence for each spin 2, there are four contact point, spin 2 and outer rings 1 and inner ring to realize four altogether Point contact, in this way, effectively prevent jumping between inner ring and outer ring 1, make the bearing can bear radial load and Axial load is born, the receiving load of bearing is improved, increases the practicability of the bearing, given full play to the multi-faceted of bearing Stress.

It should be noted that the radius of curvature of the first camber line 7 and the second camber line 8 is all larger than the half of spin 2 in the present embodiment Diameter, so that the first camber line 7 and the second camber line 8 can be contacted with spin 2, i.e. the first camber line 7 is connected with the second camber line 8 can be with Gothic vault shape is formed, and the first camber line 7 is equal with the radius of curvature of the second camber line 8 and the radius of both greater than spin 2, the One camber line 7 is corresponding relative to the center line of the first raceway 6 with the second camber line 8, in this way, further ensure that spin 2 and Radial and axial load suffered by contact point of one camber line 7 with the second camber line 8 is identical, improves the service life of bearing.

Similarly, the radius of curvature of third camber line and the 4th camber line is all larger than the radius of spin 2, so that third camber line and the 4th Camber line can be contacted with spin 2, i.e., third camber line and the 4th camber line, which are connected, can form Gothic vault shape, and third Camber line is equal with the radius of curvature of the 4th camber line and the radius of both greater than spin 2, and third camber line and the 4th camber line are relative to second The center line of raceway is corresponding, in this way, further ensure that suffered by the contact point of spin 2 and third camber line and the 4th camber line Radial and axial load is identical, improves the service life of bearing.

In the preferred embodiment of the present embodiment, the outside wall surface of outer ring 1 is set as cambered surface, to make bearing outer ring 1 and other portions The contact area of part reduces, and reduces the frictional force between them, in order to realize that bearing is turned.

Wherein, as shown in figures 1 and 3, the outside wall surface of outer ring 1 is cambered surface, and cambered surface here is the cambered surface of convex, i.e., two Low, intermediate height is held, in this way, it is easy to process, reduce the contact area of outer ring 1 Yu other component.

In another embodiment, as shown in Figure 2 and Figure 4, the outside wall surface of outer ring 1 is set as cylindrical surface, that is, outer ring 1 The outside in section is straight line, in this way, outer ring 1 and the contact area of other component are big, general fitted shaft installation, do not rotate row It walks.

The bearing of both modes can be selected according to actual use environment.

For the ease of axis and bearing installation connect, be provided with external screw thread on the outer wall of the end of connecting shaft 3, with band Internal thread drive shaft matches connection.In this way, the problem of axis and bearing installation cooperation can be better solved.

In the one way in which of the present embodiment, as shown in Figure 3 and Figure 4, one end of connecting shaft 3 is stretched out outside inner ring, is used to With driving axis connection, to realize the installation connection of axis and bearing, the other end of connecting shaft 3 and the end of inner ring are flush, with suitable For connecting the scene of a drive shaft.

In another way, as depicted in figs. 1 and 2, the both ends of connecting shaft 3 are stretched out outside inner ring, are used to and drive shaft Connection, in this way, to be suitable for connecting the scene of two drive shafts.

In the present embodiment, which further includes retainer 4, and retainer 4 is arranged between outer ring 1 and inner ring, and spin 2 It is arranged in the pocket hole of retainer 4；Retainer 4 can be by 2 portion envelops of spin, and two adjacent spin 2 is made to keep certain Spacing, will not collide, to increase the rigidity of the ball bearing.

Wherein, the material of retainer 4 can be material used in the retainer 4 of bearing in the prior art, because in axis When holding work, since sliding friction will cause bearing heating and abrasion, so the material of retainer 4, which is typically chosen, to be had centainly Intensity, will also there is that good thermal conductivity, coefficient of friction be small, the characteristics such as wear-resisting；Can specifically select mild steel, bakelite, bronze or The materials such as person's brass can also select other materials according to the demand of user.

Preferably, the quantity of retainer 4 is two, and two retainers 4 are respectively provided between outer ring 1 and inner ring；By two A retainer 4, which respectively corresponds, to be arranged between two parallel the first raceways 6 and the second raceway, and spin 2 is separately positioned on two In the pocket hole of a retainer 4, the spin 2 in the pocket hole of two retainers 4 is freely rotated.

Offer lubrication groove on the second raceway, and lubrication groove be located at spin 2 respectively with third camber line and the 4th camber line Between contact point；In ball bearing operating, spin 2 rotates between the first raceway 6 and the second raceway, and lubrication groove can be should Ball bearing increases the effect of lubrication, operates the ball bearing more smooth, and the lubricating oil in lubrication groove can also play drop The function of mildly removing the gred, to increase the service life of the ball bearing.

The ball bearing further includes two sealing covers 5, and the both ends of inner ring and outer ring 1 are arranged in sealing cover 5；Sealing cover 5 can It effectively prevents extraneous miscellaneous dirt from entering in the first raceway 6 and the second raceway, influences the operating of bearing, moreover, sealing cover 5 is also The first raceway 6 and lubricating oil in the second raceway or lubricating grease can be made to will not flow out, to keep the lubrication of the ball bearing Effect.

It further include oil filler point on the sealing cover 5；When using the ball bearing, due to two sealing covers 5,6 and of the first raceway Second raceway composition one includes the confined space of spin 2, and in order to keep the lubricant effect of the ball bearing more preferable, it is often right to need The ball bearing is maintained, so being provided with oil filler point on sealing cover 5, can be added with by oil filler point into confined space Lubricating oil or lubricating grease enable the ball bearing preferably to run.

Wherein, check valve is provided at the aperture of oil filler point；The check valve makes lubricating oil or profit in confined space Consistent lubricant will not be flowed out by check valve to outside, lubricating oil be added or when lubricating grease, can be by check valve to confined air Interior addition.

Sealing cover 5 is provided with circlip away from the side of confined space；Sealing cover 5 can be fastened on the two of ball bearing by circlip End, when needing to maintain the ball bearing, it is only necessary to remove circlip, so that it may open sealing cover 5, and to ball bearing Inside maintained, after the completion of maintenance, sealing cover 5 can be covered on ball bearing, and blocked sealing cover 5 by circlip The two sides of ball bearing are located at, to increase the service life of the ball bearing.

Optimally, the inner ring in the ball bearing, outer ring 1 and spin 2 are that GCr15 bearing steel is made；Wherein, GCr15 axis It holds steel and refers to a kind of high-carbon-chromium bearing steel that alloy content is less.

In addition, the inner ring, outer ring 1 and spin 2 in the ball bearing are also an option that other materials are made, and specifically, material Matter can be selected according to the demand of user or the operating condition of ball bearing.

It is understood that same or similar part can mutually refer in the various embodiments described above, in some embodiments Unspecified content may refer to the same or similar content in other embodiments.

Although embodiments herein has been shown and described above, it is to be understood that above-described embodiment is example Property, it should not be understood as the limitation to the application, those skilled in the art within the scope of application can be to above-mentioned Embodiment is changed, modifies, replacement and variant.

Claims (10)

1. a kind of ball bearing, which is characterized in that be sheathed in described including inner ring, outer ring (1) and spin (2), the outer ring (1) The outside of circle, the spin (2) are arranged between the outer ring (1) and the inner ring, further include having end to be used for and drive shaft The connecting shaft (3) being connected, the connecting shaft are located in the inner ring, and the inner ring and the connecting shaft (3) are in integral type Structure.

2. ball bearing according to claim 1, which is characterized in that be provided with two on the inner peripheral surface of the outer ring (1) Parallel the first raceway (6), is provided with two the second parallel raceways on the outer circumference surface of the inner ring, and two articles described One raceway (6) is oppositely arranged with two second raceways, and the spin (2) setting is in first raceway (6) and described the Between two raceways.

3. ball bearing according to claim 2, which is characterized in that distinguish on the section of two first raceways (6) Including the first camber line (7) and the second camber line (8), the radius of curvature of first camber line (7) and second camber line (8) is all larger than The radius of the spin (2), the spin (2) contact with first camber line (7) and second camber line (8) respectively, and two Third camber line and the 4th camber line, the third camber line and the 4th arc curvature of a curve are respectively included on the section of second raceway Radius is all larger than the radius of the spin (2), and the spin (2) contacts with the third camber line and the 4th camber line respectively.

4. ball bearing according to claim 1, which is characterized in that the outside wall surface of the outer ring (1) is cambered surface.

5. ball bearing according to claim 1, which is characterized in that the outside wall surface of the outer ring (1) is cylindrical surface.

6. ball bearing according to claim 1, which is characterized in that be provided on the end outer wall of the connecting shaft (3) outer Screw thread.

7. ball bearing according to claim 1, which is characterized in that outside one end stretching inner ring of the connecting shaft (3), For with the driving axis connection, the other end is flush with the inner ring end.

8. ball bearing according to claim 1, which is characterized in that the inner ring is stretched out at the both ends of the connecting shaft (3) Outside, it is used for and the driving axis connection.

9. ball bearing according to claim 3, which is characterized in that first camber line (7) and second camber line (8) phase The center line of first raceway (6) is oppositely arranged, the curvature half of first camber line (7) and second camber line (8) Diameter is equal.

10. ball bearing according to claim 1, which is characterized in that it further include retainer (4), retainer (4) setting Between the outer ring (1) and the inner ring, the spin (2) is set in the pocket hole of the retainer (4).