CN217381291U

CN217381291U - Integral cross roller bearing

Info

Publication number: CN217381291U
Application number: CN202122299901.3U
Authority: CN
Inventors: 潘建明; 王云龙; 陈晓忠
Original assignee: Shanghai Zhenhua Bearing Works Co ltd
Current assignee: Shanghai Zhenhua Bearing Works Co ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-09-06
Anticipated expiration: 2031-09-23

Abstract

The application discloses integral cross roller bearing, a serial communication port, including bearing inner race and bearing inner race, bearing inner race's medial surface the raceway that mutually supports the cross roller is seted up to bearing inner race's lateral surface, the bearing inner race is equipped with the intercommunication the voussoir groove of raceway, cross roller pass through voussoir groove installation business turn over the raceway, the voussoir notch is equipped with the inner circle voussoir outward and covers the voussoir groove, the inner circle voussoir can be dismantled with bearing inner race and be connected, is equipped with boss face (flexbile gear installation face) on the inner circle terminal surface, can reduce grinding area, precision height. This application advantage lies in, the bearing inner race and the bearing inner race that this application provided can effectively strengthen structural strength as integral structure, can avoid the dismouting to lead to the bearing precision variation moreover, eliminate the installation mistake and tear open.

Description

Integral cross roller bearing

Technical Field

The application relates to an integral cross roller bearing, and belongs to the technical field of cross roller bearings.

Background

The crossed roller bearing can bear radial and axial loads and overturning moment due to high rigidity and high precision, and can still ensure the precision in use, so that the crossed roller bearing can be widely applied to various industries.

Most of the existing cup-shaped harmonic speed reducers are two-half type crossed roller bearings, as shown in figure 1, an outer ring of the existing cup-shaped harmonic speed reducer is composed of two half type bearing outer rings, the rigidity strength of the existing cup-shaped harmonic speed reducer is weak, the roundness is poor, the existing cup-shaped harmonic speed reducer needs to be fixed and combined by screws in a machining process and then ground, the screws are disassembled during assembly, and the accuracy of the outer rings is poor; when the bearing is required to be disassembled and replaced after being installed on the harmonic reducer, the bearing cannot be used due to the fact that screws are disassembled mistakenly sometimes.

SUMMERY OF THE UTILITY MODEL

The technical problem that this application will be solved is that current cross roller bearing leads to the problem that rigidity intensity is weaker, the precision worsens, prevent that the screw mistake from tearing open owing to adopt two half formula outer lanes.

In order to solve the technical problem, the technical scheme of this application provides an integral cross roller bearing, its characterized in that, including bearing inner race and bearing inner race, the medial surface of bearing inner race the raceway that mutually supports the cross roller is seted up to the lateral surface of bearing inner race, the bearing inner race is last to be equipped with the intercommunication the voussoir groove of raceway, cross roller pass through voussoir notch installation business turn over the raceway, the voussoir groove is equipped with the inner circle voussoir outward and covers the voussoir groove, the inner circle voussoir can be dismantled with the bearing inner race and be connected.

Preferably, the inner ring wedge is detachably mounted on the bearing inner ring through a screw.

Preferably, the installation height of the inner ring wedge and the screw does not exceed the height of the end face of the bearing inner ring.

Preferably, the raceway is a square (90 ° V) raceway that accommodates a cross roller.

Preferably, a flexible gear mounting surface (a convex table surface) is arranged on the end surface of the bearing inner ring.

The bearing has the advantages that the bearing outer ring and the bearing inner ring are of an integral structure, so that the structural strength can be effectively enhanced, the bearing precision can be prevented from being deteriorated due to disassembly and assembly, and the error disassembly possibly occurring in the use process is eliminated; the connection surface of the end surface of the inner ring and the flexible gear is designed to be a boss type, and the boss surface is convenient to process and high in precision.

Drawings

FIG. 1 is a schematic cross-sectional view of a conventional crossed roller bearing;

FIG. 2 is a schematic cross-sectional view of an integral cross roller bearing provided in an embodiment;

FIG. 3 is a schematic view of a wedge groove formed in an inner race of a bearing;

reference numerals: a bearing outer ring 1; a bearing inner ring 2; an inner ring wedge 3; a cross roller 4; a screw 5; wedge grooves 21; an inner ring flexspline mounting surface 22.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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 efforts all belong to the protection scope of the present invention. In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The embodiment provides an integral crossed roller bearing, which comprises a bearing outer ring 1 and a bearing inner ring 2, wherein fig. 1 shows a matching schematic diagram of the bearing outer ring 1 and the bearing inner ring 2, raceways which are matched with each other and are used for accommodating crossed rollers 4 are arranged on the inner side surface of the bearing outer ring 1 and the outer side surface of the bearing inner ring 2, the raceways are square 90-degree raceways for accommodating the crossed rollers, fig. 2 shows a cross-sectional view of the bearing inner ring 2, a wedge groove 21 which is communicated with the raceways is arranged on the bearing inner ring 2, the crossed rollers 4 can be installed in and out of the raceways through a wedge groove 21 opening, as shown in fig. 1, an inner ring wedge block 3 is installed in the wedge groove 21, after the crossed rollers 4 are installed in the raceways, the inner ring wedge block 3 is detachably installed on the bearing inner ring 2 by covering the wedge groove 21 through a screw 5, in order to prevent the bearing from being worn to the inner ring wedge block 3 in the using process, the mounting heights of the inner ring wedge block 3 and the screw 5 do not exceed the height of the end face of the bearing inner ring 2; the end face of the bearing inner ring 2 and the connecting face of the flexible gear are designed to be a boss face, and the boss face is convenient to process and high in precision.

The working process is as follows: the bearing outer ring 1 and the bearing inner ring 2 are of an integral structure, only the bearing inner ring 2 is provided with a wedge groove 21, the bearing outer ring 1 is matched with the bearing inner ring 2, the crossed rollers 4 are arranged in a bearing raceway in a crossed mode through the wedge grooves 21, the inner ring wedge 3 covers the wedge groove 21, and the wedge groove 21 is fastened through screws 5. The inner ring flexible gear mounting surface 22 effectively reduces the grinding area and has high precision.

The bearing outer ring 1 and the bearing inner ring 2 provided by the scheme are of an integral structure, so that the structural strength can be effectively enhanced, the bearing precision deterioration caused by dismounting can be avoided, and the improvement is substantial.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an integral cross roller bearing, its characterized in that, includes bearing inner race and bearing inner race, the medial surface of bearing inner race the raceway that mutually supports the cross roller is seted up to the lateral surface of bearing inner race, be equipped with the intercommunication in the bearing inner race the voussoir groove of raceway, the cross roller passes through voussoir notch installation business turn over the raceway, the voussoir notch is equipped with the inner circle voussoir outward and covers the voussoir groove, the inner circle voussoir can be dismantled with the bearing inner race and be connected.

2. The one-piece cross roller bearing of claim 1, wherein the inner race wedge is removably mounted to the bearing inner race by screws.

3. The one-piece cruciform roller bearing of claim 2 wherein the mounting height of said inner race wedges and said screws does not exceed the height of the end face of the bearing inner race.

4. A one-piece cross roller bearing according to claim 1, wherein the raceways are square raceways that accommodate cross rollers.

5. The integral crossed roller bearing according to claim 1, wherein the bearing inner ring end face is provided with a boss face as an inner ring flexible gear mounting face.