CN212250832U

CN212250832U - Solid retainer for angular contact and QJ type four-point contact ball bearing

Info

Publication number: CN212250832U
Application number: CN202021031154.4U
Authority: CN
Inventors: 华显伟; 左朋辉; 尹玉鑫; 刘玉龙; 王跃强; 王远
Original assignee: China Machinery Luoyang Equipment Technology Co ltd
Current assignee: China Machinery Luoyang Equipment Technology Co ltd
Priority date: 2020-06-08
Filing date: 2020-06-08
Publication date: 2020-12-29
Anticipated expiration: 2030-06-08

Abstract

The utility model provides an entity holder for angular contact and QJ type four point contact ball bearing, relates to bearing technical field, the utility model discloses a lockhole (2-2) are directly processed out on pocket hole (2), make the drunkenness volume of steel ball in the pocket hole keep unanimous, the effectual life that prolongs the bearing, improved product quality etc. have simultaneously that lubricating property is good, rotatory nimble, steady, reduce the noise of bearing when the gyration, reduce workman's intensity of labour, improve production efficiency, reduce advantages such as manufacturing cost, the utility model has the characteristics of simple structure, convenient to use etc. are fit for popularization and application on a large scale.

Description

Solid retainer for angular contact and QJ type four-point contact ball bearing

Technical Field

The utility model relates to a bearing technical field, concretely relates to entity holder that is used for angular contact and QJ type four point contact ball bearing.

Background

It is known that angular contact ball bearings and QJ-type four-point contact ball bearings are widely used in precision machine tool spindles and high-speed gear machining equipment, and both bearings have the characteristics of high rigidity, good rotation precision and capability of simultaneously bearing radial and axial combined loads.

Currently, the metal solid retainers used for bearings of both types of structures are in the form of straight pockets guided by flanges. Because the two half inner rings of the QJ type four-point contact ball bearing are separable, a seal lock ball needs to be chiseled near the inner diameter surface pocket hole of the retainer pocket hole during assembly, and the steel ball is prevented from falling out of the pocket hole after the two half inner rings are separated. Chiseling requires symmetrical positions and consistent locking amount. The chiseling and printing adopts a manual operation mode, has great randomness and is difficult to meet the requirements of symmetry and locking quantity consistency; the locking amount of the pockets is different, so that the play amount of the steel balls in the pockets is different, the rotation stability of the bearing is directly influenced, and abnormal sound is generated; the locking amount of the locking point is small, the locking point is point contact, great instability exists, and when the bearing works, the steel ball is easy to fall off from the pocket under the action of the self weight and the impact force of the steel ball; the phenomenon that the steel ball is directly clamped due to the large locking amount of the locking point can be generated. The brass material has brittle mechanical property, the retainer is impacted by external force in the process of chiseling, deformation is easy to occur, the impact force is uncontrollable, and the phenomenon of tearing or breaking of the material at the chiseling position can occur. And the manual chiseling and printing has high labor intensity, low production efficiency, high manufacturing cost and the like. Therefore, it has been a long felt need in the art to provide a solid cage for angular contact and QJ-type four-point contact ball bearings.

Disclosure of Invention

For overcoming exist not enough in the background art, the utility model provides a solid holder for angular contact and QJ type four point contact ball bearing, the utility model discloses a with the structural style that the pocket hole design meets for cylinder hole and taper hole, effectually compensatied not enough of current structural bearing, have advantages such as long service life, reliability height, smooth operation, machining efficiency height, low in manufacturing cost.

In order to achieve the above purpose, the present invention adopts the following technical solutions:

the solid retainer for the angular contact and QJ type four-point contact ball bearing comprises a retainer body and pockets, wherein a plurality of pockets penetrating through the inner edge surface of the retainer body are arranged on the outer edge surface of the retainer body at intervals, the upper part of each pocket is a cylindrical hole, a conical hole which extends downwards and has a small opening at the lower end and a large opening at the upper end is arranged at the lower end of each cylindrical hole, a locking hole which extends downwards is arranged at the lower end of each conical hole, and a chamfer which extends downwards is arranged at the lower end of each locking hole to form the solid retainer for the angular contact and QJ type four-point contact ball bearing.

The solid retainer for the angular contact and QJ type four-point contact ball bearing is characterized in that an annular groove which is recessed outwards is arranged on the inner edge surface of the retainer body.

The solid retainer for the angular contact and QJ type four-point contact ball bearing is characterized in that the radial center of the groove is superposed with the radial center of the retainer body.

Adopt technical scheme as above, the utility model discloses the superiority as follows has:

the utility model discloses a directly process out the lockhole on the pocket hole, make the play volume of steel ball in the pocket hole keep unanimous, the effectual life that prolongs the bearing, improved product quality etc. have simultaneously that the lubricating property is good, rotatory nimble, steady, reduce the noise of bearing when the gyration, reduce workman's intensity of labour, improve production efficiency, reduce advantages such as manufacturing cost, the utility model has the characteristics of simple structure, convenient to use are fit for popularization and application on a large scale.

Drawings

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

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is an enlarged partial cross-sectional view of the pocket of the present invention;

in the figure: 1. a cage body; 2. a pocket hole; 2-1, chamfering; 2-2, lock hole; 2-3, conical holes; 2-4, cylindrical holes; 3. and (4) a groove.

Detailed Description

The present invention will be explained in more detail by the following examples, which are not intended to limit the scope of the invention;

it should be noted that the directions and positional relationships indicated by "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. used in describing the structure of the present invention are only for convenience of description and simplification of description, and 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 specific implementation of the utility model, the retainer body 1 is a guiding mechanism of steel balls, which can avoid interference with inner and outer ring flanges to ensure the flexible rotation requirement of the bearing, and the solid retainer for angular contact and QJ type four-point contact ball bearing, which is described in conjunction with the attached drawings 1-3, comprises the retainer body 1 and the pockets 2, wherein the retainer body 1 is a circular structure, a plurality of pockets 2 penetrating to the inner edge surface of the retainer body 1 are arranged on the outer edge surface of the retainer body 1 at intervals, the plurality of pockets 2 are uniformly distributed on the retainer body 1, the axial center of the pockets 2 is coincided with the radial center of the retainer body 1, the upper part of each pocket 2 is a cylindrical hole 2-4, the lower end of the cylindrical hole 2-4 is provided with a conical hole 2-3 which extends downwards and has a small lower end opening and a large upper end opening, a cylindrical lock hole 2-2 extending downwards is formed in the lower end of the conical hole 2-3, a chamfer 2-1 extending downwards is formed in the lower end of the lock hole 2-2, an annular groove 3 sinking outwards is formed in the inner edge surface of the retainer body 1, the radial center of the groove 3 is overlapped with the radial center of the retainer body 1, and a cylindrical hole 2-4 is formed in the upper portion of the pocket 2, so that a steel ball can be conveniently loaded into the pocket when the pocket is used for an angular contact ball bearing; the lower part of the pocket 2 is provided with a conical hole 2-3 which is in point contact with the rolling surface of the steel ball in a tangent manner; the lock hole 2-2 arranged on the pocket 2 can lock the steel ball loaded in the pocket 2, and simultaneously control the drooping amount of the retainer, so that the moving amount of the steel ball in the pocket 2 is kept consistent, the retainer is not contacted with the flanges of the inner ring and the outer ring, the contact area is reduced, and the noise and the heat generated by friction are reduced; a chamfer 2-1 with a certain angle arranged at the joint of the inner diameter of the retainer body 1 and the lock hole 2-2 plays a role of guiding the steel ball to be correctly arranged in the arc-shaped pocket 2; the lock hole 2-2 is designed to be a cylindrical surface, so that the steel ball is prevented from being scratched when being put in; the recess 3 that sets up outwards at retainer body 1 internal diameter face to alleviate the weight of retainer body 1 self, make pocket 2 form two convex lock points of symmetry, can pin the steel ball along the outline of steel ball well, and have stronger stability, reduce the area of contact of pocket 2 and steel ball simultaneously, reduce the friction, reduce the bearing and generate heat, the difficult wearing and tearing of lock point, the float volume that enables the steel ball in pocket 2 simultaneously keeps unanimous, reduce the noise of bearing when the gyration. And the clearance between the inner diameter and the outer diameter of the retainer body 1 and the flanges of the inner ring and the outer ring is larger, so that lubricating grease can smoothly enter the bearing for sufficient lubrication and the like.

The utility model discloses a lock volume of direct processing play holder on pocket hole 2, the holder no longer receives external force to strike when fitting, can not take place once more and warp, the assembly performance of bearing has been improved, the lock point is two semi-circular symmetries, and stronger stability has, the lock point is difficult for wearing and tearing, the drunkenness volume that enables the steel ball in pocket hole 2 simultaneously keeps unanimous, the life of extension bearing, improve product quality, the lubricating property is good, it is rotatory nimble, steady, reduce the noise of bearing when the gyration, reduce workman's intensity of labour, and the production efficiency is improved, the manufacturing cost is reduced, etc.

The part of the utility model not detailed is prior art.

The embodiments selected for the purpose of disclosing the invention, are presently considered to be suitable, it being understood, however, that the invention is intended to cover all variations and modifications of the embodiments, which fall within the scope of the concept and invention.

Claims

1. A solid cage for angular contact and QJ-type four-point contact ball bearings, comprising a cage body (1) and pockets (2), characterized in that: the solid retainer for the angular contact and QJ type four-point contact ball bearing is characterized in that a plurality of pockets (2) penetrating through the inner edge surface of the retainer body (1) are arranged on the outer edge surface of the retainer body (1) at intervals, the upper portion of each pocket (2) is a cylindrical hole (2-4), a conical hole (2-3) which extends downwards and is small in opening at the lower end and large in opening at the upper end is arranged at the lower end of each cylindrical hole (2-4), a locking hole (2-2) which extends downwards is arranged at the lower end of each conical hole (2-3), and a chamfer (2-1) which extends downwards is arranged at the lower end of each locking hole (2-2) to form the solid retainer for the angular contact and QJ type.

2. The solid cage for angular contact and QJ-type four-point contact ball bearings according to claim 1, wherein: the inner edge surface of the retainer body (1) is provided with an annular groove (3) which is sunken outwards.

3. The solid cage for angular contact and QJ-type four-point contact ball bearings according to claim 2, wherein: the radial center of the groove (3) is superposed with the radial center of the retainer body (1).