CN109667840A - A kind of assembly method of miniature standard rolling bearing crown cage - Google Patents
A kind of assembly method of miniature standard rolling bearing crown cage Download PDFInfo
- Publication number
- CN109667840A CN109667840A CN201811584145.5A CN201811584145A CN109667840A CN 109667840 A CN109667840 A CN 109667840A CN 201811584145 A CN201811584145 A CN 201811584145A CN 109667840 A CN109667840 A CN 109667840A
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- China
- Prior art keywords
- crown cage
- bearing
- rolling bearing
- crown
- standard rolling
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C43/00—Assembling bearings
- F16C43/04—Assembling rolling-contact bearings
- F16C43/06—Placing rolling bodies in cages or bearings
- F16C43/065—Placing rolling bodies in cages or bearings in cages
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a kind of assembly methods of miniature standard rolling bearing crown cage, belong to rolling bearing mounting technology field, it is to be assembled using a special tooling to the crown cage of miniature standard rolling bearing, special tooling includes positioning column, it is big that upper diameter is equipped in the middle part of positioning column, the small circular stepped hole of lower section diameter, the major diameter section and step on stepped hole top are used to positioning bearing outer ring, the positioning core axle coaxial with positioning column is equipped in the path section of stepped hole lower part, positioning core axle top is equipped with the baffle ring for placing crown cage, the inner wall of baffle ring and the outer wall of crown cage cooperate to position to crown cage, the blind hole that bottom surface is not higher than stepped hole step end face is equipped in the middle part of the positioning core axle；The assembly method positions bearing outer ring and crown cage to avoid sidesway occurs simultaneously, and during press fitting, bearing hardly happens inclination, and steel ball is uniform to the active force of crown cage, and assembly slightly firmly can be completed.
Description
Technical field
The present invention relates to rolling bearing mounting technology fields, more particularly, to a kind of miniature crown holding of standard rolling bearing
The assembly method of frame.
Background technique
Miniature standard rolling bearing refers to bearing inner race and the contour rolling bearing of bearing outer ring, miniature standard in the present invention
The crown cage that rolling bearing uses is mostly stainless steel material, to improve its intensity, needs to protect by surface treatment when necessary
It is not distorted deformation when card assembly, ball pocket has a smooth contact surface after pcketing with steel ball, therefore staring torque or low
Fast moment of friction is small, and crown cage intensity is high, and velocity interval is extensive.Miniature standard rolling bearing uses crown in the present invention
Retainer is manufactured by 3Cr13 stainless steel band, and thickness only has 0.1mm, and concrete shape is as shown in Figure 1, wherein crown cage supports
The internal diameter of ring is smaller than internal diameter at crown cage fore shaft, crown cage fore shaft external diameter surface to circle center slightly
Inclination, retainer offer several notches in pocket mouth endface.
Due between the crown cage internal diameter and bearing inner race outer diameter of miniature standard rolling bearing in diametrical direction
Distance be 0.04-0.12mm, crown cage outer diameter between the internal diameter of outer ring in diametrical direction at a distance from be 0.35-
0.40mm, the total height very little of crown cage, only 1.5mm.The assembly method of traditional crown cage as shown in Fig. 2,
Crown cage is placed on pedestal, the step height of pedestal has certain requirement, the height of pedestal top bar and crown holding
The sum of frame pocket hole height should be greater than the ditch position of bearing ring, and bearing to be assembled is placed on above crown cage, then by steel
Ball is divided equally, and is placed at corresponding crown cage fore shaft, firmly pushes, can be packed into crown cage from top to bottom at this time
In bearing.There are following disadvantages for such method: 1, due to retainer in the plane of pedestal without circumferencial direction or axis
Positioning to direction, therefore during firmly pushing, retainer can have certain offset；2, the crown holding of the bearing
Frame thickness is very thin, easily deforms, and since skew occurs for bearing during pressure, causes steel ball to crown cage
Force is uneven, and crown cage deforms, and serious crown cage is deformed before steel ball enters pocket hole, at fore shaft
It steps on there have been under, can not continue to use at all, deform the slightly light distance due to retainer apart from bearing inner race outer diameter and only have
There is phenomena such as emergency stop, clamping stagnation so that the flexibility of revolution occurred after bearing assembly is poor in 0.04-0.12mm, and primary assembly is closed
Lattice rate only has 45% or so；3, the underproof bearing of a large amount of flexibility of revolution, needs crown cage of dismantling, and waste is a large amount of
Manpower and material resources；The main difficulty of bearing assembly is that the thickness of crown cage is too thin, and retainer is just when firmly uneven
It can deform.
Since disadvantage mentioned above causes this method to need to improve, a kind of new crown cage assembly method is explored, guarantees hat
Shape retainer uniform force, does not deform.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of assembly method of miniature standard rolling bearing crown cage,
It can guarantee crown cage uniform force, do not deform.
In order to solve the above-mentioned technical problem used technical solution is the present invention:
A kind of assembly method of miniature standard rolling bearing crown cage is to be rolled using a special tooling to miniature standard
Dynamic bearing is assembled, and the special tooling includes positioning column, and positioning column middle part is big equipped with upper diameter, lower section diameter is small
Circular stepped hole, the major diameter section on stepped hole top are used to position the bearing outer ring of miniature standard rolling bearing when assembly, ladder
The position of miniature standard rolling bearing bearing outer ring when the step in hole is used to position assembly completion, in the path section of stepped hole lower part
Equipped with the positioning core axle coaxial with positioning column, positioning core axle top is equipped with baffle ring, the inner wall of baffle ring and the outer wall of crown cage
Cooperation is equipped with the blind hole that bottom surface is not higher than stepped hole step end face to position to crown cage, in the middle part of the positioning core axle；
The assembly method includes the following steps:
(1), the inner ring, steel ball and outer ring of standard rolling bearing are assembled into semi-finished product；
(2), the crown cage of standard rolling bearing one end opposite with pocket hole open end is placed on to the baffle ring of special tooling
It is interior, crown cage is positioned using the inner wall of baffle ring and the outer wall cooperation of crown cage bottom；Step (1) is assembled
Semi-finished product be placed in stepped hole above crown cage, between the inner wall of the major diameter section of the maximum gauge and stepped hole of bearing outer ring
Gap cooperation, using ball-distributer stir steel ball carry out bulb separation, make every steel ball all in the fore shaft in crown cage pocket hole at；
(3), the semi-finished product of pressing step (1) assembly from top to bottom are close to the step of stepped hole, axis to the lower end surface of bearing outer ring
It holds inner ring to enter in the blind hole at positioning core axle center, the side wall cooperation baffle ring support crown cage of blind hole makes it into axis at this time
The corresponding position between Internal and external cycle is held, bearing assembly is completed.
Further, the height of baffle ring is lower than the pocket hole flanging height of crown cage.
Further, the difference in height of the upper surface of positioning core axle and stepped hole step end face is equal to miniature standard rolling bearing
Middle distance of the crown cage bottom away from bearing outer ring lower end surface.
Further, the wall thickness of blind hole is less than the spacing of bearing inner race and bearing outer ring.
The utility model has the advantages that
As described above, a kind of assembly method of miniature standard rolling bearing crown cage of the invention, has below beneficial to effect
Fruit:
1: the assembly method of miniature standard rolling bearing crown cage utilizes the big of the stepped hole top of positioning column center setting
Diameter section and step position bearing outer ring, are determined using the baffle ring on positioning core axle top the outer diameter of crown cage
Position avoids bearing and crown cage in assembly and sidesway occurs, during press fitting, due to mutual appropriate cooperation,
Bearing is set to hardly happen inclination during press fitting, steel ball is uniform to the active force of crown cage, slightly firmly can be complete
At assembly.
2: the assembly method of the crown cage greatly improves the flexibility of revolution of pressing bearing, is pacified using such method
Dress crown cage will not deform, and first-time qualification rate is up to 95% or more.
3: the assembly method is simple, with strong points, is particularly suitable for the miniature standard rolling bearing crown cage of small lot
Assembly.
Further specific detailed description is done to the present invention below with reference to embodiment the drawings and specific embodiments.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology to be briefly described, it should be apparent that, the accompanying drawings in the following description is only the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the schematic diagram of crown cage in the present invention；
Fig. 2 is the crown cage assembling schematic diagram of the prior art；
Fig. 3 is the assembling schematic diagram of crown cage in the present invention；
Fig. 4 is that schematic diagram is completed in bearing assembly of the present invention.
Diagram label, 1, positioning column, 11, stepped hole, 2, positioning core axle, 21, blind hole, 3, baffle ring.
Specific embodiment
The term of such as "upper", "lower", "left", "right", " centre " and " one " cited in this specification, is also only just
In being illustrated for narration, rather than to limit the scope of the invention, relativeness is altered or modified, without substantive change
Under more technology contents, when being also considered as the enforceable scope of the present invention.
Core of the invention is to provide a kind of assembly method of miniature standard rolling bearing crown cage, guarantees crown guarantor
Frame uniform force is held, is not deformed.
This measurement method be particularly suitable for crown cage height it is smaller and be located at bearing in the middle part of when the case where.Institute in attached drawing
The miniature standard rolling bearing shown, the total high half of total a height of bearing of crown cage.Wherein, bearing inner race or the ditch of outer ring
Bottom is located at the center of bearing, and the pocket hole center of crown cage is located at the center of crown cage.
Referring to FIG. 3, Fig. 3 is the assembling schematic diagram of crown cage provided by the present invention.
A kind of assembly method of miniature standard rolling bearing crown cage is using a special tooling to miniature mark
Quasi- rolling bearing is assembled, and the special tooling includes positioning column 1, is equipped with that upper diameter is big, lower section is straight in the middle part of positioning column 1
The small circular stepped hole 11 of diameter, the major diameter section on 11 top of stepped hole are used to position the bearing of miniature standard rolling bearing when assembly
Outer ring, the step of stepped hole 11 are used to position the position of miniature standard rolling bearing bearing outer ring when assembly is completed, stepped hole 11
The positioning core axle 2 coaxial with positioning column 1 is equipped in the path section of lower part, 2 top of positioning core axle is equipped with baffle ring 3, the inner wall of baffle ring 3
Cooperate with the outer wall of crown cage to be positioned to crown cage, prevents crown cage from side occurs during pushing
It moves.
Since the height of crown cage is more much lower than the height of bearing ring, to guarantee smoothly assembly, in positioning core axle 2
Middle part be equipped with the blind hole 21 that bottom surface is not higher than 11 step end face of stepped hole, the diameter dimension of blind hole 21 is outer than bearing inner race
Diameter size is big, more slightly smaller than the internal diameter of crown cage, can both guarantee bearing during pushing, the end face of inner ring can
Can smoothly enter into slot, and it can guarantee that there are enough support strengths in the end face of crown cage.Blind hole 21 give bearing inner race to
The space of lower movement, if inner ring end face is in contact with the end face of positioning core axle 2, and steel ball is due to vertical without this blind hole
There is no enough shift lengths on direction and be stuck in the fore shaft of crown cage, does not enter the pocket hole of crown cage
It is interior.
The difference in height of the upper surface of positioning core axle 2 and 11 step end face of stepped hole is equal to crown in miniature standard rolling bearing
Distance of the retainer bottom away from bearing outer ring lower end surface.
It should be noted that the present invention is to positioning column 1 for the assembly for realizing miniature standard rolling bearing crown cage
The major diameter section surface on 11 top of stepped hole is ground, and keeps bearing outer ring outer diameter and the major diameter section surface on 11 top of stepped hole small
Clearance fit prevents during pressing from top to bottom, and skew occurs for outer ring, so that crown cage be caused to deform.
It wherein, is the assembly for realizing miniature standard rolling bearing crown cage, stepped hole 11 of the present invention to positioning column 1
The surface of 2 outer diameter of path section and positioning core axle of lower part is ground respectively, makes outer diameter and 11 lower part of stepped hole of positioning core axle 2
Path section surface be slight interference cooperation, prevent from causing crown cage internal diameter and inner ring since gap between the two is excessive
Outer diameter occurs interfering or scrape during press fitting.
It should be noted that for the assembly for realizing miniature standard rolling bearing crown cage, the side wall wall thickness of blind hole 21
Less than the spacing of bearing inner race and bearing outer ring.
Since gap diametric between crown cage outer diameter and outer ring internal diameter is 0.35-0.5mm, i.e. radial direction
Maximum only has 0.25mm, needs to guarantee outer ring during moving down, the internal diameter of outer ring is not sent out with the outer diameter of positioning core axle 2
Raw interference, and the outer diameter of positioning core axle 2 can be made maximum.
It wherein, is the assembly for realizing miniature standard rolling bearing crown cage, the height of baffle ring 3 is than retainer ball pocket
Flange height is low, and otherwise crown cage will be suspended in baffle ring 3, and positioning degree is simultaneously unreliable.
Preferably, be the assembly of realization type standard rolling bearing crown cage, positioning core axle 2 and baffle ring 3 be both needed to using
The higher material of intensity, the material that copper, aluminium etc. cannot be used softer are processed.Because the unilateral full-size of baffle ring 3 only has
0.25mm, thickness is very thin, if improper use during pushing, will result in the damage of baffle ring 3, it is therefore necessary to use
The high material processing of intensity.
The miniature standard rolling bearing assembly method includes the following steps:
(1), the inner ring, steel ball and outer ring of standard rolling bearing are assembled into semi-finished product；
(2), the crown cage of standard rolling bearing one end opposite with pocket hole open end is placed on to the baffle ring 3 of special tooling
It is interior, crown cage is positioned using the inner wall of baffle ring 3 and the outer wall cooperation of crown cage bottom；Step (1) is filled
The semi-finished product matched are placed in stepped hole 11 above crown cage, the major diameter section of the maximum gauge and stepped hole 11 of bearing outer ring
Inner wall clearance fit stirs steel ball using ball-distributer and carries out bulb separation, makes every steel ball all in the fore shaft in crown cage pocket hole
Place；
(3), the semi-finished product of pressing step (1) assembly from top to bottom are close to the step of stepped hole 11 to the lower end surface of bearing outer ring,
Bearing inner race enters in the blind hole 21 at 2 center of positioning core axle, and the side wall cooperation baffle ring 3 of blind hole 21 supports crown cage to make at this time
It enters the corresponding position between bearing internal external circle, and bearing assembly is completed, and it is as shown in Figure 4 that schematic diagram is completed in bearing assembly.
Wherein, when that blowout patche outer ring that the maximum gauge of bearing outer ring refers to is equipped with flange, refer to the diameter of flange；Work as axis
When bearing outer-ring does not set flange, the diameter of spindle bearing outer-ring.
Wherein, crown cage one end opposite with pocket hole open end is equipped with in-flanges, with the end where the in-flanges
As the bottom of crown cage, the upper surface of positioning core axle 21 is contacted with in-flanges, the inner wall of baffle ring 3 and crown cage
The outer wall of bottom cooperates to position crown cage.
The assembly method of the miniature standard rolling bearing crown cage greatly improves the flexibility of revolution of pressing bearing,
It will not be deformed using such method installation crown cage, first-time qualification rate is up to 95% or more.
A kind of assembly method of miniature standard rolling bearing crown cage provided by the present invention has been carried out in detail above
Thin to introduce, specific case used herein is expounded the principle of the present invention and specific embodiment, above-described embodiment
Only it is used to help to understand method and core concept of the invention.It should be pointed out that for those of ordinary skill in the art, it is all
It is any simple modification, equivalent change and modification to the above embodiments according to the technical essence of the invention, each falls within this
In the protection scope of invention.
Claims (4)
1. a kind of assembly method of miniature standard rolling bearing crown cage, it is characterised in that: it is using a special tool
Dress assembles miniature standard rolling bearing, and the special tooling includes positioning column (1), is equipped in the middle part of positioning column (1) upper
The circular stepped hole (11) that section diameter is big, lower section diameter is small, it is micro- when the major diameter section on stepped hole (11) top is for positioning assembly
The bearing outer ring of type standard rolling bearing, the step of stepped hole (11) is for positioning miniature standard rolling bearing axis when assembly is completed
The position of bearing outer-ring is equipped with the positioning core axle (2) coaxial with positioning column (1), locating core in the path section of stepped hole (11) lower part
Axis (2) top is equipped with baffle ring (3), and the inner wall of baffle ring (3) and the outer wall of crown cage cooperate to position to crown cage, institute
It states and is equipped with the blind hole (21) that bottom surface is not higher than stepped hole (11) step end face in the middle part of positioning core axle (2)；
The assembly method includes the following steps:
(1), inner ring, steel ball and the outer ring of miniature standard rolling bearing are assembled into semi-finished product；
(2), the crown cage of miniature standard rolling bearing one end opposite with pocket hole open end is placed on special tooling
In baffle ring (3), crown cage is positioned using the inner wall of baffle ring (3) and the outer wall cooperation of crown cage bottom；It will
The semi-finished product of step (1) assembly are placed in above the interior crown cage of stepped hole (11), the maximum gauge and stepped hole of bearing outer ring
(11) the inner wall clearance fit of major diameter section stirs steel ball using ball-distributer and carries out bulb separation, makes every steel ball all in crown guarantor
At the fore shaft for holding frame pocket hole；
(3), the semi-finished product of pressing step (1) assembly from top to bottom are close to the platform of stepped hole (11) to the lower end surface of bearing outer ring
Rank, bearing inner race enter in the blind hole (21) at positioning core axle (2) center, at this time side wall cooperation baffle ring (3) support of blind hole (21)
Crown cage makes it into the corresponding position between bearing internal external circle, and bearing assembly is completed.
2. a kind of assembly method of miniature standard rolling bearing crown cage according to claim 1, it is characterised in that:
The height of baffle ring (3) is lower than the pocket hole flanging height of crown cage.
3. a kind of assembly method of miniature standard rolling bearing crown cage according to claim 1, it is characterised in that:
The upper surface of positioning core axle (2) and the difference in height of stepped hole (11) step end face are equal to crown holding in miniature standard rolling bearing
Distance of the frame bottom away from bearing outer ring lower end surface.
4. a kind of assembly method of miniature standard rolling bearing crown cage according to claim 1, it is characterised in that:
The wall thickness of blind hole (21) is less than the spacing of miniature standard rolling bearing middle (center) bearing inner ring and bearing outer ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811584145.5A CN109667840B (en) | 2018-12-24 | 2018-12-24 | Assembly method of miniature standard rolling bearing crown-shaped retainer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811584145.5A CN109667840B (en) | 2018-12-24 | 2018-12-24 | Assembly method of miniature standard rolling bearing crown-shaped retainer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109667840A true CN109667840A (en) | 2019-04-23 |
| CN109667840B CN109667840B (en) | 2021-02-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811584145.5A Active CN109667840B (en) | 2018-12-24 | 2018-12-24 | Assembly method of miniature standard rolling bearing crown-shaped retainer |
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| Country | Link |
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| CN (1) | CN109667840B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112388284A (en) * | 2021-01-20 | 2021-02-23 | 山东道智盛信息科技有限公司 | Device for preventing bearing nylon retainer from being damaged in press fitting process |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69523289T2 (en) * | 1994-01-31 | 2002-07-18 | Torrington Co | ONE-PIECE METAL CAGE FOR BALL BEARINGS |
| CN102734336A (en) * | 2012-06-15 | 2012-10-17 | 无锡市海鸿精工机械制造有限公司 | Assembly tooling device for miniature bearing crown-type retainer |
| CN204572812U (en) * | 2015-04-30 | 2015-08-19 | 昆山康斯特精密机械有限公司 | For the crown capper pressure cover device of first generation hub bearing |
| CN106351969A (en) * | 2016-08-29 | 2017-01-25 | 洛阳轴研科技股份有限公司 | Tool and method for assembling ball bearing retainers |
| CN205978134U (en) * | 2016-08-08 | 2017-02-22 | 洛阳轴研科技股份有限公司 | Inseparable type angular contact ball bearing's assembly fixture |
-
2018
- 2018-12-24 CN CN201811584145.5A patent/CN109667840B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69523289T2 (en) * | 1994-01-31 | 2002-07-18 | Torrington Co | ONE-PIECE METAL CAGE FOR BALL BEARINGS |
| CN102734336A (en) * | 2012-06-15 | 2012-10-17 | 无锡市海鸿精工机械制造有限公司 | Assembly tooling device for miniature bearing crown-type retainer |
| CN204572812U (en) * | 2015-04-30 | 2015-08-19 | 昆山康斯特精密机械有限公司 | For the crown capper pressure cover device of first generation hub bearing |
| CN205978134U (en) * | 2016-08-08 | 2017-02-22 | 洛阳轴研科技股份有限公司 | Inseparable type angular contact ball bearing's assembly fixture |
| CN106351969A (en) * | 2016-08-29 | 2017-01-25 | 洛阳轴研科技股份有限公司 | Tool and method for assembling ball bearing retainers |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112388284A (en) * | 2021-01-20 | 2021-02-23 | 山东道智盛信息科技有限公司 | Device for preventing bearing nylon retainer from being damaged in press fitting process |
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|---|---|
| CN109667840B (en) | 2021-02-23 |
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