CN210830153U - Special tapered roller bearing of robot joint department - Google Patents

Abstract

The utility model belongs to the technical field of the bearing technique and specifically relates to a special tapered roller bearing of robot joint department, including the bearing inner race, be provided with spacing bulge loop on the annular inner wall of bearing inner race, be equipped with the bearing inner race in the bearing inner race, set up the recess of two sets of mutual symmetries about setting up on the outer annular surface of bearing inner race, all install tapered roller in the recess, still be equipped with first ring channel on the bearing outer race. The utility model discloses a spacing bulge loop that sets up carries on spacingly to the bearing inner race, and through the spherical ball that sets up, reduces the frictional force between spacing bulge loop and the first ring channel, stability when guaranteeing to take place rotation each other between bearing inner race and the bearing inner race, and still improved the ability that bearing inner race and bearing inner race bear load simultaneously, it is less to have solved its bearing load ability of general tapered roller bearing, and the problem that the interior outer axle breaks away from each other appears easily.

Description

Special tapered roller bearing of robot joint department

Technical Field

The utility model relates to a bearing technical field specifically is a special tapered roller bearing of robot joint department.

Background

The tapered roller bearing belongs to a separated bearing, and the inner ring and the outer ring of the bearing are both provided with tapered roller paths. Because the tapered roller bearing has the characteristics of supporting the mechanical rotating body, reducing the friction coefficient in the movement process and ensuring the rotation precision of the mechanical rotating body, the tapered roller bearing can be used at the joint of the robot, and the common tapered roller bearing has smaller load bearing capacity and is easy to cause the mutual separation of the inner shaft and the outer shaft. In view of this, we propose a tapered roller bearing dedicated to the robot joint.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a special tapered roller bearing of robot joint department to it bears the less problem of load capacity to solve the general tapered roller bearing that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a special tapered roller bearing of robot joint department, includes the bearing inner race, be provided with spacing bulge loop on the annular inner wall of bearing inner race, the cross-section of spacing bulge loop is circular, the through-hole that is linked together with the external world has been seted up in the spacing bulge loop, be equipped with the bearing inner race in the bearing inner race, the bearing inner race cover is established on the bearing inner race, two sets of mutual symmetrical recess about having seted up on the outer annular surface of bearing inner race, every group the recess all is cyclic annular equidistant range, all install tapered roller in the recess, still be equipped with first ring channel on the bearing outer race.

Preferably, the two sets of grooves are symmetrical about a plane in which the first annular groove lies.

Preferably, the limit convex ring is positioned in the first annular groove.

Preferably, a plurality of clamping holes which are arranged in an annular and equidistant mode are formed in the upper surface and the lower surface of the limiting convex ring, and a second annular groove is formed in the hole wall of each clamping hole.

Preferably, an arc-shaped transition inclined plane is further arranged at the position, close to the notch at one end of the clamping hole, corresponding to the second annular groove.

Preferably, a spherical ball is arranged in the second annular groove.

Preferably, the spherical diameter of the spherical ball is larger than the aperture of the clamping hole, and the spherical diameter of the spherical ball is larger than the sum of the depth of the clamping hole and the depth of the second annular groove.

Preferably, the inner annular surface of the bearing outer ring is further provided with two mutually symmetrical raceways.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a spacing bulge loop that sets up carries on spacingly to the bearing inner race, stability when guaranteeing to take place the rotation each other between bearing inner race and the bearing inner race, and has still improved the ability that bearing inner race and bearing inner race bear load simultaneously, has solved its bearing load ability of general tapered roller bearing less, and the problem that the axle breaks away from each other in the easy appearance.

2. The utility model discloses a spherical ball that sets up to reduce the frictional force between spacing bulge loop and the first ring channel, make the rotation between bearing inner race and the bearing inner race more smooth, it is great to have solved its coefficient of friction of general tapered roller bearing, can cause certain energy loss's problem.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

fig. 2 is an exploded view of embodiment 1 of the present invention;

FIG. 3 is an enlarged view of the point A in FIG. 2 according to the present invention;

fig. 4 is a schematic structural diagram of embodiment 2 of the present invention;

fig. 5 is an enlarged view of the utility model at B in fig. 4;

fig. 6 is a sectional view of a limit convex ring in embodiment 2 of the present invention;

fig. 7 is an enlarged view of the present invention at C in fig. 6;

fig. 8 is a schematic structural view of embodiment 3 of the present invention.

In the figure: 1. a bearing outer race; 10. a limit convex ring; 101. a through hole; 12. a bearing inner race; 121. a groove; 122. a tapered roller; 123. a first annular groove; 2. a clamping hole; 20. a second annular groove; 21. an arc-shaped transition inclined plane; 3. a spherical ball; 4. a raceway.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Example 1

The utility model provides a special tapered roller bearing of robot joint department, as shown in fig. 1 to 3, including bearing inner race 1, be provided with spacing bulge loop 10 on bearing inner race 1's the annular inner wall, the cross-section of spacing bulge loop 10 is circular, set up the through-hole 101 that is linked together with the external world in the spacing bulge loop 10, be equipped with bearing inner race 12 in the bearing inner race 1, bearing inner race 12 is established to bearing inner race 1 cover, set up upper and lower two sets of mutually symmetrical recess 121 on the outer annular surface of bearing inner race 12, every group recess 121 all is cyclic annular equidistant range, all install tapered roller 122 in the recess 121, still be equipped with first ring channel 123 on the bearing inner race 1, spacing bulge loop 10 is located first ring channel 123.

In this embodiment, the limiting convex ring 10 is tightly welded on the bearing outer ring 1, so as to ensure the structural firmness and prolong the service life of the bearing outer ring.

Specifically, the two groups of grooves 121 are symmetrical with respect to the plane where the first annular groove 123 is located, so as to ensure that the first annular groove 123 is located right at the central position of the bearing inner ring 12, that is, the first annular groove 123 divides the bearing inner ring 12 into two equal parts, so that the tapered rollers 122 can be correctly installed in the grooves 121.

Further, the tapered rollers 122 are in contact with the inner annular surface of the bearing outer ring 1, and the tapered rollers 122 can roll on the inner annular surface of the bearing outer ring 1.

In this embodiment, the bearing inner ring 12 is limited by the limiting convex ring 10, so that the accuracy of the installation position of the bearing inner ring 12 is ensured, and when mutual rotation occurs between the bearing inner ring 12 and the bearing outer ring 1, the bearing inner ring 12 and the bearing outer ring 1 cannot be separated from each other, the load bearing capacity of the bearing inner ring and the bearing outer ring is improved, and the problems that the load bearing capacity of a general tapered roller bearing is small, and the inner shaft and the outer shaft are separated from each other easily are solved.

Example 2

In the specific operation, in order to ensure that the rotation between the bearing inner ring 12 and the bearing outer ring 1 is smoother and reduce the friction between the first annular groove 123 and the limit protruding ring 10, therefore, the limit protruding ring 10 is improved on the basis of the embodiment 1, as a preferred embodiment, as shown in fig. 4 to 7, a plurality of clamping holes 2 are respectively formed in the upper surface and the lower surface of the limit protruding ring 10, the clamping holes 2 are arranged in an annular shape at equal intervals, a second annular groove 20 is formed in the hole wall of each clamping hole 2, an arc-shaped transition inclined surface 21 is further arranged at one end notch of the second annular groove 20, which is close to the corresponding clamping hole 2, and a spherical ball 3 is arranged in the second annular groove 20.

In this embodiment, the diameter of the spherical ball 3 is greater than the aperture of the clamping hole 2, and the diameter of the spherical ball 3 is greater than the sum of the depth of the clamping hole 2 and the depth of the second annular groove 20, so that less than half of the spherical ball 3 is exposed outside the clamping hole 2 and contacts with the groove wall of the first annular groove 123, thereby reducing the friction between the first annular groove 123 and the limit convex ring 10, and making the mutual rotation between the bearing inner ring 12 and the bearing outer ring 1 smoother.

Specifically, through the arc transition inclined plane 21 that sets up, when making spherical ball 3 and the contact of arc transition inclined plane 21, can play the effect of protection to spherical ball 3, avoid the edges and corners too sharp 3 wearing and tearing of spherical ball to cause seriously.

In this embodiment, through the spherical ball 3 that sets up, and spherical ball 3 can free rotation in second annular groove 20 and in card hole 2 to the realization reduces the frictional force between spacing bulge loop 10 and the first annular groove 123, makes bearing inner race 12 or bearing outer race 1 pivoted more smooth, has solved its coefficient of friction of general tapered roller bearing great, can cause certain energy loss's problem.

Example 3

In the concrete operation, in order to ensure the correctness of the installation position between the bearing inner ring 12 and the bearing outer ring 1, therefore, the bearing outer ring 1 is improved on the basis of the embodiment 2, as a preferred embodiment, as shown in fig. 8, two mutually symmetrical raceways 4 are further provided on the inner annular surface of the bearing outer ring 1.

In this embodiment, when the bearing inner ring 12 is correctly installed in the bearing outer ring 1, the tapered rollers 122 are located right in the corresponding raceways 4 and roll in the corresponding raceways 4, so as to ensure the correctness of the installation position between the bearing inner ring 12 and the bearing outer ring 1.

The utility model discloses a special tapered roller bearing of robot joint department when using, spacing bulge loop 10 through setting up carries on spacingly to bearing inner race 12, guarantee bearing inner race 12 mounted position's exactness, and when guaranteeing to take place rotation each other between bearing inner race 12 and the bearing inner race 1 simultaneously, can not take place to break away from each other between bearing inner race 12 and the bearing inner race 1, the ability that bearing inner race and bearing inner race bear load has been improved, in addition through the spherical ball 3 that sets up, realize reducing the frictional force between spacing bulge loop 10 and the first ring channel 123, make bearing inner race 12 or 1 pivoted of bearing inner race more smooth, it is less to have solved its bearing load ability of general tapered roller bearing, and the problem that the inside and outside axle breaks away from each other appears easily.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (8)

1. The utility model provides a special tapered roller bearing of robot joint department, includes bearing inner race (1), its characterized in that: be provided with spacing bulge loop (10) on the annular inner wall of bearing inner race (1), the cross-section of spacing bulge loop (10) is circular, set up through-hole (101) that are linked together with the external world in spacing bulge loop (10), be equipped with bearing inner race (12) in bearing inner race (1), bearing inner race (1) cover is established on bearing inner race (12), two sets of mutual symmetrical recess (121) about having seted up on the outer annular surface of bearing inner race (12), every group recess (121) all are cyclic annular equidistant range, tapered roller (122) all are installed in recess (121), still be equipped with first ring channel (123) on bearing inner race (1).

2. The tapered roller bearing for use at a robot joint as claimed in claim 1, wherein: the two sets of grooves (121) are symmetrical with respect to the plane of the first annular groove (123).

3. The tapered roller bearing for use at a robot joint as claimed in claim 1, wherein: the limiting convex ring (10) is positioned in the first annular groove (123).

4. The tapered roller bearing for use at a robot joint as claimed in claim 1, wherein: the upper surface and the lower surface of the limiting convex ring (10) are provided with a plurality of clamping holes (2) which are arranged in an annular equidistant manner, and the hole wall of each clamping hole (2) is provided with a second annular groove (20).

5. The tapered roller bearing for use at a robot joint as claimed in claim 4, wherein: an arc-shaped transition inclined plane (21) is further arranged at the position, close to the notch at one end of the clamping hole (2) corresponding to the second annular groove (20).

6. The tapered roller bearing for use at a robot joint as claimed in claim 5, wherein: and a spherical ball (3) is arranged in the second annular groove (20).

7. The tapered roller bearing for use at a robot joint as claimed in claim 6, wherein: the spherical diameter of the spherical ball (3) is larger than the aperture of the clamping hole (2), and the spherical diameter of the spherical ball (3) is larger than the sum of the depth of the clamping hole (2) and the depth of the second annular groove (20).

8. The tapered roller bearing for use at a robot joint as claimed in claim 1, wherein: the inner annular surface of the bearing outer ring (1) is also provided with two mutually symmetrical roller paths (4).

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