CN219587968U

CN219587968U - Crossed roller bearing

Info

Publication number: CN219587968U
Application number: CN202320067424.4U
Authority: CN
Inventors: 卞智毅; 邵秀华; 刘云涛
Original assignee: Luoyang Xinkai Bearing Technology Co ltd
Current assignee: Luoyang Xinkai Bearing Technology Co ltd
Priority date: 2023-01-10
Filing date: 2023-01-10
Publication date: 2023-08-25
Anticipated expiration: 2033-01-10

Abstract

The utility model provides a crossed roller bearing, includes inner circle and outer lane, be provided with roller and spacer between two raceways of outer lane and inner circle, be equipped with a jack on the terminal surface of one side of inner circle, the jack is the wedge, the size that the inner circle was kept away from to the jack is less than the size that is close to the outer lane, and, the jack bottom is equipped with the inclined plane, the high end on inclined plane is inboard in the inner circle, and the bottom is outside in the inner circle, be equipped with a stopper that matches with it in the jack, the stopper passes through headless screw to be fixed on the inner circle. The plug is pushed from the outer diameter to the inner diameter and naturally folds with the original cutting surface, so that the cutting joint of the plug and the plug hole after wire cutting is filled, the plug is naturally lower than the outer diameter and the end face of the bearing inner ring, the blanking utilization is ensured, the plug is not required to be processed by secondary feeding, and the plug is not required to be repaired again and the headless screw is not required to be replaced after heat treatment.

Description

Crossed roller bearing

Technical field:

the utility model belongs to the technical field of bearings, and mainly relates to a crossed roller bearing.

The background technology is as follows:

the crossed roller bearing can bear radial force, axial force and overturning moment simultaneously, and is compact in appearance, high in bearing capacity and good in rigidity, so that the crossed roller bearing is widely applied to robot arms, industrial rotating tables, medical equipment and other automatic equipment.

In consideration of the overall dimension, rigidity and installation convenience of the bearing, most of the bearings selected by customers are the whole outer ring, the whole inner ring and the bearing with the plug on the outer ring outer diameter, and because a certain gap is reserved between the plug hole on the outer ring outer diameter and the plug, after the bearing runs for a long time, grease can continuously seep out from the gap between the plug and the plug hole due to the action of centrifugal force, so that a certain pollution is caused to the production site of the customers.

The utility model comprises the following steps:

in order to overcome the above-described disadvantages, the present utility model provides a crossed roller bearing.

The utility model solves the technical problems by adopting the technical scheme that:

the utility model provides a crossed roller bearing, includes inner circle and outer lane, be provided with roller and spacer between two raceways of outer lane and inner circle, be equipped with a jack on the terminal surface of one side of inner circle, the jack is the wedge, the size that the inner circle was kept away from to the jack is less than the size that is close to the outer lane, and, the jack bottom is equipped with the inclined plane, the high end on inclined plane is inboard in the inner circle, and the bottom is outside in the inner circle, be equipped with a stopper that matches with it in the jack, the stopper passes through headless screw to be fixed on the inner circle.

The plug is formed by processing materials cut during plug hole processing.

The included angle between the two rollaway nest is 90 degrees, and the included angle between the rollaway nest and the end face of the inner ring or the outer ring is 45 degrees.

And mounting holes are formed in the end faces of the outer ring and the inner ring.

By adopting the technical scheme, the utility model has the following advantages:

1. the material is saved, the bearing with the plug on the front end surface is formed by milling a square hole on the bearing and then the plug with the same size is manufactured and installed. The processed material is directly assembled at present, and a plug is not required to be processed by secondary feeding.

2. Because the front view and the left view of the plug and the plug hole are oblique, after the plug is reinstalled on the bearing, the plug is pushed from the outer diameter to the inner diameter and naturally closes with the original cutting surface, the cutting gap of the plug and the plug hole after linear cutting is filled, the plug is naturally lower than the outer diameter and the end face of the bearing ring, the blanking utilization is ensured, and the plug and the replacement screw do not need to be repaired again after heat treatment.

3. Because of the relation of 1 to 1, the situation that the fitting of the plug and the ferrule rollaway nest is poor can not occur after the assembly, and the abnormal rotation caused by the fact that the ferrule rollaway nest and the plug rollaway nest are not in line after the assembly of parts can not occur.

4. The spacer is arranged in front of every two adjacent rollers, the rollers are not in direct contact with each other when the bearing rotates, the direct impact of the rollers and the roller path when the bearing rotates is reduced, and the noise generated when the finished product rotates is reduced. The contact surface of the roller and the isolation block is in arc contact, so that a lubricating oil film is easier to form, the long-time lubrication of the rolling bodies is facilitated, and the service life of the bearing is prolonged.

5. The end faces of the outer ring and the inner ring are provided with mounting holes, so that customers can conveniently and directly mount the products after receiving the products, and the step shaft and the bearing cover which are matched with the outer ring bearing seat and the bearing cover and the inner ring do not need to be machined.

Description of the drawings:

FIG. 1 is a schematic view of the construction of an inner race of a conventional roller bearing;

FIG. 2 is a cross-sectional view of the inner race of the present utility model;

FIG. 3 is a view in the K-direction of FIG. 2;

FIG. 4 is a schematic diagram of the structure of the present utility model;

in the figure: 1. an outer ring; 2. a spacer block; 3. a roller; 4. an inner ring; 5. a headless screw; 6. a plug; 7. a mounting hole; 8. plugging holes; 9. and (5) an inclined plane.

The specific embodiment is as follows:

for the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model provides a cross roller bearing, includes inner circle 4 and outer lane 1, be provided with roller 3 and spacer 2 between two raceways of outer lane 1 and inner circle 4, be equipped with a jack 8 on the terminal surface of one side of inner circle 4, jack 8 is the wedge, the size that the inner circle 4 was kept away from to jack 8 is less than the size that is close to outer lane 1, and the jack 8 bottom is equipped with inclined plane 9, the high end of inclined plane 9 is inboard in inner circle 4, and the bottom is in the inner circle 4 outside, be equipped with a stopper 6 that matches with it in the jack 8, stopper 6 is fixed on inner circle 4 through headless screw 5.

The provision of the inclined surface 9 in this way has the following effects:

first, after the plug 6 is put into the plug hole 8, the plug can slide to the raceway side according to self gravity, and the trend can enable the gap between the plug 6 and the outer ring 1 to be smaller, so that the sealing effect is indirectly improved.

Secondly, in the course of bearing rotation, there is a tendency for the plug 6 to move outwardly due to centrifugal force, thereby increasing the clearance between the plug 6 and the outer race 1 to be smaller, indirectly increasing the sealing effect.

The plug 6 is formed by machining materials cut during machining of the plug hole 8, specifically, after the inner ring 4 is machined, drilling and tapping are conducted on the position where the plug 6 is to be cut; then the inner ring 4 is heat treated, after the heat treatment, the plug 6 is processed, the plug 6 is cut off from the ferrule according to the drawing requirement at the pre-drilling place by using a slow wire cutting method, after the dirt on the cutting surface is cleaned, the plug 6 is fixed on the body of the inner ring 4 by using the headless screw 5 again, and then the grinding processing is carried out. After the plug 6 is reinstalled on the bearing, the plug 6 is pushed from the outer diameter to the inner diameter and naturally closes with the original cutting surface, so that the cutting gap between the plug 6 and the plug hole 8 after wire cutting is filled, the plug 6 is naturally lower than the outer diameter and the end face of the bearing inner ring 4, the blanking utilization is ensured, the plug 6 is not required to be processed by secondary feeding, and the plug 6 is not required to be repaired again and the headless screw 5 is not required to be replaced after heat treatment. Because of the relation of 1 to 1, the situation that the fitting of the plug 6 and the ferrule rollaway nest is poor can not occur after the assembly, and the abnormal rotation caused by the incongruity of the ferrule rollaway nest and the plug rollaway nest can not occur after the assembly of parts.

The included angle between the two rollaway nest is 90 degrees, and the included angle between the rollaway nest and the end face of the inner ring 4 or the outer ring 1 is 45 degrees. The spacer block 2 is arranged in front of every two adjacent rollers, the rollers 3 and the rollers 3 cannot be in direct contact when the bearing rotates, the direct impact of the rollers 3 and the roller path when the bearing rotates is reduced, and the noise generated when the finished product rotates is reduced. The contact surface of the roller 3 and the isolation block 2 is in arc contact, so that a lubricating oil film is easier to form, the long-time lubrication of the rolling bodies is facilitated, and the service life of the bearing is prolonged.

The end faces of the outer ring 1 and the inner ring 4 are provided with mounting holes 7, so that customers can conveniently and directly mount the bearing after receiving goods, and the step shaft and the bearing cover matched with the outer ring bearing seat and the bearing cover and the inner ring do not need to be machined.

The above is not described in detail in the prior art.

Claims

1. A crossed roller bearing, characterized in that: including inner circle and outer lane, be provided with roller and spacer between two raceways of outer lane and inner circle, be equipped with a jack on the terminal surface of one side of inner circle, the jack is the wedge, the size that the inner circle was kept away from to the jack is less than the size that is close to the outer lane, and the jack bottom is equipped with the inclined plane, the high end on inclined plane is inboard including the inner circle, and the bottom is outside including the inner circle, be equipped with a stopper that matches with it in the jack, the stopper passes through headless screw fixation and circles including.

2. A crossed roller bearing according to claim 1, wherein: the plug is formed by processing materials cut during plug hole processing.

3. A crossed roller bearing according to claim 1, wherein: the included angle between the two rollaway nest is 90 degrees, and the included angle between the rollaway nest and the end face of the inner ring or the outer ring is 45 degrees.

4. A crossed roller bearing according to claim 1, wherein: and mounting holes are formed in the end faces of the outer ring and the inner ring.