CN110307254B - Angular contact ball bearing retainer - Google Patents
Angular contact ball bearing retainer Download PDFInfo
- Publication number
- CN110307254B CN110307254B CN201910714362.XA CN201910714362A CN110307254B CN 110307254 B CN110307254 B CN 110307254B CN 201910714362 A CN201910714362 A CN 201910714362A CN 110307254 B CN110307254 B CN 110307254B
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- China
- Prior art keywords
- arc
- lintel
- shaped
- convex surface
- contact convex
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- 210000002421 cell wall Anatomy 0.000 claims abstract description 11
- 238000005461 lubrication Methods 0.000 description 18
- 239000004519 grease Substances 0.000 description 17
- 238000005096 rolling process Methods 0.000 description 10
- 125000006850 spacer group Chemical group 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000005484 gravity Effects 0.000 description 4
- 230000000452 restraining effect Effects 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 230000004323 axial length Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/38—Ball cages
- F16C33/3887—Details of individual pockets, e.g. shape or ball retaining means
-
- 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/38—Ball cages
- F16C33/41—Ball cages comb-shaped
- F16C33/412—Massive or moulded comb cages, e.g. snap ball cages
- F16C33/414—Massive or moulded comb cages, e.g. snap ball cages formed as one-piece cages, i.e. monoblock comb cages
- F16C33/416—Massive or moulded comb cages, e.g. snap ball cages formed as one-piece cages, i.e. monoblock comb cages made from plastic, e.g. injection moulded comb cages
-
- 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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
- F16C19/16—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
- F16C19/163—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls with angular contact
-
- 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
- F16C2322/00—Apparatus used in shaping articles
- F16C2322/39—General buildup of machine tools, e.g. spindles, slides, actuators
-
- 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/38—Ball cages
- F16C33/3806—Details of interaction of cage and race, e.g. retention, centring
-
- 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/38—Ball cages
- F16C33/3837—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages
-
- 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/583—Details of specific parts of races
- F16C33/586—Details of specific parts of races outside the space between the races, e.g. end faces or bore of inner ring
-
- 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/6659—Details of supply of the liquid to the bearing, e.g. passages or nozzles
- F16C33/6662—Details of supply of the liquid to the bearing, e.g. passages or nozzles the liquid being carried by air or other gases, e.g. mist lubrication
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
This angular contact ball bearing holder includes the holder body, the holder body includes the inner circle that one end is connected with a plurality of inboard lintel, two adjacent inboard lintel and inner circle form the interior cone pocket groove that is the U-shaped, be equipped with from outside middle part arc contact convex surface first and the interior face of dodging that connects gradually in interior cone pocket groove's cell wall middle part, be equipped with respectively at the cell wall both ends of interior cone pocket groove and follow the interior arc contact convex surface that interior cone pocket groove cell wall width direction set up, and one end is connected with the outer lane of a plurality of outside lintel, two adjacent outside lintel and outer lane form the outer cone pocket groove that is the U-shaped, outside lintel one-to-one fixes the surface of inboard lintel, interior cone pocket groove and outer cone pocket groove form foretell ball pocket hole, be equipped with from outside middle part arc contact convex surface second and the interior face second that dodges that inwards set gradually in the cell wall middle part of outer cone pocket groove, be equipped with respectively at the cell wall both ends of outer cone pocket groove along outer cone pocket groove cell wall width direction set up.
Description
Technical Field
The invention belongs to the technical field of bearings, and particularly relates to an angular contact ball bearing retainer.
Background
The angular contact ball bearing for the machine tool spindle mainly comprises two modes of grease lubrication and oil-gas lubrication, and the two different lubrication modes have respective optimal retainer structural designs.
The existing angular contact ball bearing retainer has the following defects:
1. the structure of the grease lubrication bearing retainer is not changed, and when the grease lubrication bearing retainer is used for oil-gas lubrication, noise is easy to be generated due to the fact that the retainer is impacted by the oil-gas.
2. The contact friction between the rolling bodies and the retainer is large, and the heating value is large.
3. Rolling element with retainer pocket edge being easy to scratch
4. The collision position of the rolling bodies and the retainer pockets is uncertain, so that the retainer is unstable in operation.
Disclosure of Invention
The invention aims to solve the problems and provide the angular contact ball bearing retainer which is more reasonable in design.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the angular contact ball bearing retainer comprises a retainer body, wherein a plurality of ball pockets which are uniformly distributed circumferentially are arranged in the circumferential direction of the retainer body, the retainer body comprises an inner ring, one end of the inner ring is connected with a plurality of inner side lintels which are uniformly distributed circumferentially, one end of each inner side lintel, which is far away from the inner ring, slightly exceeds the central radial plane of the retainer body, two adjacent inner side lintels and the inner ring form an inner cone pocket which is U-shaped, the middle part of the wall of the inner cone pocket is provided with a middle arc-shaped contact convex surface I and an inner avoidance surface I which are sequentially connected from outside to inside, both ends of the wall of the inner cone pocket are respectively provided with an inner arc-shaped contact convex surface which is arranged along the width direction of the wall of the inner cone pocket, one end of the wall of the inner cone pocket is connected with a plurality of outer rings which are uniformly distributed circumferentially, two adjacent outer side lintels and the outer rings form an outer cone pocket which is U-shaped, the number of the inner side lintel and the number of the outer side lintel are equal, the outer side lintel is fixed on the outer surface of the inner side lintel one by one, one end of the outer side lintel far away from the outer ring is extended to the outer wall of the inner ring, the large inner diameter outer end of the inner conical pocket faces the large inner diameter inner end of the outer conical pocket, the inner conical pocket and the outer conical pocket form the ball pocket, the middle part of the wall of the outer conical pocket is provided with a middle arc-shaped contact convex surface II and an inner avoidance surface II which are sequentially arranged from outside to inside, the two ends of the wall of the outer conical pocket are respectively provided with an outer arc-shaped contact convex surface which is arranged along the width direction of the wall of the outer conical pocket, the outer arc-shaped contact convex surfaces are positioned on the outer side of the inner arc-shaped contact convex surfaces one by one, the balls are respectively contacted with the middle arc-shaped contact convex surface I, the inner arc-shaped contact convex surface II and the outer arc-shaped contact convex surface I, the curvature radius of the contour line formed by the extension connection with the ball contact position is larger than that of the ball, and the curvature radius of the contour line formed by the extension connection with the ball non-contact position is smaller than that of the ball.
The length of the end of the inner side lintel far away from the inner ring exceeds the radial plane of the center of the retainer body by 1/5-1/10 of the axial length of the inner side lintel.
The outer lintel and the inner lintel are connected into an integral structure and can be manufactured by adopting an injection molding process.
In the angular contact ball bearing retainer, the outer side edge of the inner arc-shaped contact convex surface is connected with the inner side edge of the outer arc-shaped contact convex surface, and an avoidance space is formed between the inner arc-shaped contact convex surface and the outer arc-shaped contact convex surface.
In the angular contact ball bearing retainer, two ends of the wall of the outer conical pocket groove are also provided with an arc limiting convex surface, an arc limiting concave surface and an inclined surface which are respectively connected with the outer arc contact convex surface and are sequentially connected from the outer side of the outer conical pocket groove to the inner side of the outer conical pocket groove.
In the angular contact ball bearing retainer, the outer arc-shaped contact convex surface, the arc-shaped limiting concave surface and the inclined surface are respectively arranged on two side surfaces of the outer lintel, the outer arc-shaped contact convex surface arranged on one side surface of the outer lintel and the outer arc-shaped contact convex surface arranged on the other side surface are symmetrically arranged, the arc-shaped limiting convex surface arranged on one side surface of the outer lintel and the arc-shaped limiting convex surface arranged on the other side surface are symmetrically arranged, the arc-shaped limiting concave surface arranged on one side surface of the outer lintel and the arc-shaped limiting concave surface arranged on the other side surface are symmetrically arranged, and the inclined surfaces arranged on one side surface of the outer lintel and the inclined surfaces arranged on the other side surface are symmetrically arranged and the two inclined surfaces are distributed in a splayed shape.
In the angular contact ball bearing retainer, the first inner avoidance surface and the second inner avoidance surface are arc-shaped concave surfaces.
In the angular contact ball bearing retainer, the inner surface of the outer lintel is an arc-shaped matching concave surface, the outer surface of the inner lintel is an arc-shaped matching convex surface, the arc-shaped matching convex surface is flush with the outer wall of the inner ring, the arc-shaped matching concave surface is matched with the arc-shaped matching convex surface, and the arc-shaped matching concave surface is matched with the outer wall of the inner ring.
In the angular contact ball bearing retainer, the inner arc-shaped contact convex surfaces are distributed on two side surfaces of the end part of each inner side lintel, and the inner arc-shaped contact convex surfaces arranged on one side surface of the end part of the inner side lintel and the inner arc-shaped contact convex surfaces arranged on the other side surface of the end part of the inner side lintel are symmetrically arranged.
In the angular contact ball bearing retainer, the first arc-shaped contact convex surface in the middle part is arranged at the center of the groove wall of the inner conical pocket groove.
In the angular contact ball bearing retainer, the middle arc-shaped contact convex surface II is arranged at the center of the groove wall of the outer conical pocket groove.
In the angular contact ball bearing retainer, an inner inclined surface which is obliquely downwards and inwards arranged is arranged at one end of the inner lintel, which is far away from the inner ring; an outer inclined plane which is consistent with the inclined direction of the inner inclined plane is arranged at one end of the outer lintel, which is far away from the outer ring.
Compared with the prior art, the angular contact ball bearing retainer has the advantages that:
1. the oil-gas lubrication and grease lubrication angular contact ball bearings share the same design retainer, so that the types of the retainer are reduced (design and manufacturing cost advantages);
2. the design can reduce noise (improvement of oil-gas lubrication) caused by vibration of the retainer due to oil-gas impact on the retainer lintel;
3. the resistance of oil gas entering the bearing channel can be reduced, so that the energy consumption of the oil gas lubrication device (improvement of oil gas lubrication) is reduced;
4. the internal void volume of the bearing can be increased, and the grease filling amount of the bearing is improved, so that the service time of the bearing is prolonged (the grease lubrication is improved);
5. when the grease filling amount is the same, the stirring resistance of bearing grease can be reduced, so that the stirring heat of the grease is reduced, and the temperature rise of the bearing (improvement of grease lubrication) is reduced;
6. the special pocket hole internal design can reduce the loss of lubricating grease, thereby prolonging the service time of the bearing (improving the lubrication of the grease);
7. the contact friction heat between the rolling bodies and the retainer can be reduced, and the temperature rise of the bearing is reduced (the two lubrication modes are improved);
8. the scratch of the edge of the retainer pocket on the rolling bodies can be reduced, and the reliability (improvement of two lubrication modes) is improved.
9. The collision position of the rolling bodies and the retainer is determined, so that the running stability of the retainer is improved (the two lubrication modes are improved).
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic structural view provided by the present invention.
FIG. 3 is a schematic cross-sectional view of the structure taken along line A-A in FIG. 2.
FIG. 4 is a schematic cross-sectional view of the structure taken along line B-B in FIG. 2.
Fig. 5 is an enlarged schematic view of a partial structure of the cage according to the present invention.
Fig. 6 is an enlarged sectional view of fig. 5 at 1 a.
Fig. 7 is an enlarged sectional view of fig. 5 at 1 b.
Fig. 8 is an enlarged sectional view of fig. 5 at 1 c.
Fig. 9 is a schematic view of the lateral cross-section of the outboard lintel provided by the invention.
Fig. 10 is an enlarged partial schematic view of the ball and cage contact state provided by the present invention.
Fig. 11 is a schematic view of an angular contact ball bearing structure provided by the invention.
In the figure, a retainer body a, balls b, ball pockets a1, an inner ring 1, an inner lintel 11, an inner conical pocket 12, a middle arc-shaped contact convex surface 13, an inner avoidance surface 14, an inner arc-shaped contact convex surface 15, an avoidance space 16, an inner inclined surface 17, an outer ring 2, an outer lintel 21, an outer conical pocket 22, a middle arc-shaped contact convex surface 23, an inner avoidance surface 24, an outer arc-shaped contact convex surface 25, an arc-shaped limiting convex surface 26, an arc-shaped limiting concave surface 27, an inclined surface 28, an outer inclined surface 29, an inner spacer ring 4, an outer spacer ring 5, an oil gas inlet hole 51, an oil gas discharge hole 52, a bearing inner ring 6 and a bearing outer ring 7.
Detailed Description
The following are specific embodiments of the invention and the technical solutions of the invention will be further described with reference to the accompanying drawings, but the invention is not limited to these embodiments.
As shown in fig. 1, the angular contact ball bearing retainer comprises a retainer body a, wherein a plurality of ball pockets a1 which are uniformly distributed circumferentially are formed in the circumferential direction of the retainer body a, and balls are arranged in the ball pockets a 1.
As shown in the figure 2 of the drawings,
the retainer body a comprises an inner ring 1, one end of which is connected with a plurality of inner lintel 11 which are uniformly distributed in circumference, and the inner lintel 11 and the inner ring 1 are connected into an integrated structure, namely, the retainer body a is formed integrally by injection molding, so that the structural strength can be improved.
The circumference is evenly distributed, so that the balance of gravity can be ensured, and the manufacturing and processing difficulty can be reduced.
Secondly, the thickness of the inner lintel 11 is equal to the wall thickness of the inner ring 1.
In addition, the inner lintel 11 is provided with an inner inclined surface 17 arranged obliquely downwards and inwards at the end facing away from the inner ring, which inclined surface can facilitate the subsequent interconnection assembly.
As shown in the figure 2 of the drawings,
the end of the inner lintel 11 far away from the inner ring 1 slightly exceeds the central radial plane of the retainer body a, and the design can reduce the noise caused by the vibration of the retainer due to the impact of oil gas on the lintel of the retainer; the resistance of oil gas entering the bearing channel can be reduced, so that the energy consumption of the oil gas lubrication device is reduced; the internal void volume of the bearing can be increased, and the grease filling amount of the bearing is improved, so that the service time of the bearing is prolonged; when the grease filling amount is the same, the stirring resistance of bearing grease can be reduced, so that the stirring heat of the grease is reduced, and the temperature rise of the bearing is reduced.
As shown in figures 2 and 5 and 8,
adjacent two inboard lintel 11 and inner circle 1 form the interior cone pocket groove 12 that is the U-shaped, be equipped with from outside-in middle part of the cell wall of interior cone pocket groove 12 in proper order the middle part arc contact convex surface 13 and interior face of dodging one 14, this middle part arc contact convex surface 13 sets up the cell wall central point of interior cone pocket groove 12 put, its processing of being convenient for and manufacturing, secondly, interior face of dodging one 14 is the arc concave surface, this design can enlarge and dodge the space, ball fish tail etc. phenomenon has been avoided.
In the optimized scheme, the first arc-shaped contact convex surface 13 in the middle part is arranged at the center of the groove wall of the inner conical pocket 12.
As shown in figures 3 and 6 of the drawings,
the groove wall both ends of the inner conical pocket groove 12 are respectively provided with an inner arc-shaped contact convex surface 15 which is arranged along the width direction of the groove wall of the inner conical pocket groove 12, the two inner arc-shaped contact convex surfaces 15 and a middle arc-shaped contact convex surface 13 in the middle form a three-point support for the ball so as to improve the support stability, and meanwhile, the design can reduce the contact friction heat of the rolling bodies and the retainer, reduce the bearing temperature rise and prolong the service life of the bearing.
Further, the inner arc-shaped contact convex surfaces 15 are distributed on two side surfaces of the end part of each inner lintel 11, and the inner arc-shaped contact convex surfaces 15 arranged on one side surface of the end part of the inner lintel 11 and the inner arc-shaped contact convex surfaces 15 arranged on the other side surface of the end part of the inner lintel 11 are symmetrically arranged.
The symmetrical design can improve the processing and manufacturing efficiency and reduce the manufacturing and processing difficulty, and meanwhile, the gravity balance of the retainer can be ensured.
As shown in the figure 2 of the drawings,
and one end is connected with a plurality of outer rings 2 which are uniformly distributed on the circumference and outside lintel 21, and the uniform distribution on the circumference can ensure the balance of gravity and reduce the manufacturing and processing difficulty.
The outer lintel 21 and the outer ring 2 are connected as an integral structure, i.e. by being formed by integral forging, in such a way that it can increase the structural strength.
The thickness of the outer lintel 21 is equal to the thickness of the single-sided wall thickness of the outer ring 2.
An outer inclined surface 29 is provided at an end of the outer lintel 21 remote from the outer ring in accordance with the inclination direction of the inner inclined surface 17. The inner inclined surface 17 and the outer inclined surface 29 are identical in inclination direction, which can improve assembly efficiency therebetween.
Next, the outer lintel 21 and the inner lintel 11 are integrally joined by welding.
Meanwhile, the axial lead of the outer ring is coincident with the axial lead of the inner ring, so that the stability and smoothness of the running of the ball can be improved.
As shown in figures 2 and 5 of the drawings,
adjacent two outside lintel 21 and outer lane 2 form the outer cone pocket 22 that is the U-shaped, and the notch of outer cone pocket 22 and the notch of interior cone pocket 12 set up in opposite directions, and the quantity of inboard lintel 11 equals with the quantity of outside lintel 21 and outside lintel 21 one by one is fixed the surface of inboard lintel 11 and the one end that outside lintel 21 kept away from outer lane 2 extends to the outer wall of inner circle 1, i.e. the axial length of inboard lintel 11 is shorter than the axial length of outside lintel 21.
Secondly, the inner surface of the outer lintel 21 is an arc-shaped matching concave surface, the outer surface of the inner lintel 11 is an arc-shaped matching convex surface, the arc-shaped matching convex surface is flush with the outer wall of the inner ring 1, the arc-shaped matching concave surface is matched with the arc-shaped matching convex surface, and the arc-shaped matching concave surface is matched with the outer wall of the inner ring 1.
The structure can improve the structural strength and structural stability of the connection and fixation of the two, and avoid the phenomena of cracking, falling and the like.
The large inner diameter outer end of the inner tapered pocket 12 faces the large inner diameter inner end of the outer tapered pocket 22 and the inner tapered pocket 12 and the outer tapered pocket 22 form the ball pocket a1 described above, i.e., the tapered inclination directions of both pockets are opposite, which is intended to restrict the balls and prevent the balls from being separated.
As shown in figures 4 and 7 of the drawings,
the middle part of the groove wall of the outer cone-shaped pocket groove 22 is provided with a middle arc-shaped contact convex surface II 23 and an inner avoidance surface II 24 which are sequentially arranged from outside to inside, the middle arc-shaped contact convex surface II 23 is arranged at the middle position of the groove wall of the outer cone-shaped pocket groove 22, and the inner avoidance surface II 24 is an arc-shaped concave surface.
The contour of the contact area between the middle arc-shaped contact convex surface II 23 and the middle arc-shaped contact convex surface I13 and the ball is in a convex curve, so that the contact area is reduced, and the design brings the advantage 7. The non-contact area of the ball is a concave curve near the center of the ball, the distance between the edge of the pocket and the ball is increased, and the design brings the advantage 8.
As shown in figure 6 of the drawings,
the two ends of the groove wall of the outer cone-shaped pocket groove 22 are respectively provided with an outer arc-shaped contact convex surface 25 which is arranged along the width direction of the groove wall of the outer cone-shaped pocket groove 22, the outer arc-shaped contact convex surfaces 25 are positioned on the outer sides of the inner arc-shaped contact convex surfaces 15 one by one, the outer side edges of the inner arc-shaped contact convex surfaces 15 are connected with the inner side edges of the outer arc-shaped contact convex surfaces 25, and an avoidance space 16 is formed between the inner arc-shaped contact convex surfaces 15 and the outer arc-shaped contact convex surfaces 25. The outer arc-shaped contact convex surface 25 and the inner arc-shaped contact convex surface 15 are convex curves in the contact area with the rolling bodies, so that the contact area is reduced, and the design brings the advantage 7.
Meanwhile, the three-point support formed by the two outer arc-shaped contact convex surfaces 25 and the middle arc-shaped contact convex surfaces 23 is adopted, so that the support stability can be greatly improved, and meanwhile, the contact friction heat between the rolling bodies and the retainer can be reduced, the temperature rise of the bearing is reduced, and the service life of the bearing is prolonged.
Second, the structure in which the outer arcuate contact convex surface 25 and the inner arcuate contact convex surface 15 are connected can form an inner and outer restriction, and can further improve the stability of the ball. While the relief space 16 is a V-shaped structure that may be used to store grease to further enhance the stability of the rolling operation.
As shown in the figure 9 of the drawings,
in addition, arc limiting convex surfaces 26, arc limiting concave surfaces 27 and inclined surfaces 28 which are respectively connected with the outer arc contact convex surfaces 25 and are sequentially connected from the outer side of the outer conical pocket 22 to the inner side of the outer conical pocket 22 are also arranged at two ends of the wall of the outer conical pocket 22. The curved restraining convex surface 26 and the curved restraining concave surface 27 are curled toward the axis of the cage, the profile formed by the connection of the curved restraining convex surface 26, the curved restraining concave surface 27 and the inclined surface 28 gradually flattens along the axis of the cage to the radial plane of the center of the cage, and the design brings about the above-mentioned advantage 6.
Further, the outer arc-shaped contact convex surface 25, the arc-shaped limiting convex surface 26, the arc-shaped limiting concave surface 27 and the inclined surface 28 are respectively arranged on two side surfaces of the outer lintel 21, the outer arc-shaped contact convex surface 25 arranged on one side surface of the outer lintel 21 and the outer arc-shaped contact convex surface 25 arranged on the other side surface are symmetrically arranged, the arc-shaped limiting convex surface 26 arranged on one side surface of the outer lintel 21 and the arc-shaped limiting convex surface 26 arranged on the other side surface are symmetrically arranged, the arc-shaped limiting concave surface 27 arranged on one side surface of the outer lintel 21 and the arc-shaped limiting concave surface 27 arranged on the other side surface are symmetrically arranged, the inclined surface 28 arranged on one side surface of the outer lintel 21 and the inclined surface 28 arranged on the other side surface are symmetrically arranged, and the two inclined surfaces 28 are splayed.
The structure on both sides face is symmetrical setting, can be convenient for processing manufacturing to and can improve the stability that the ball moved, and the structure gravity equilibrium of holder.
As shown in figure 10 of the drawings,
the ball contacts with the first arc-shaped contact convex surface 13 in the middle, the second arc-shaped contact convex surface 15 in the middle, the second arc-shaped contact convex surface 23 in the outer arc-shaped contact convex surface 25 respectively, the curvature radius of a contour line formed by the extended connection of the contact position of the ball is larger than that of the ball, and the curvature radius of the contour line formed by the extended connection of the non-contact position of the ball is smaller than that of the ball. This design brings the above advantage 9.
As shown in the figure 11 of the drawings,
the angular contact ball bearing manufactured by the present embodiment. The angular contact ball bearing comprises an inner spacer ring 4, an outer spacer ring 5 sleeved outside the inner spacer ring 4, and a bearing inner ring 6 connected at one end of the inner spacer ring 4, a bearing outer ring 7 connected at one end of the outer spacer ring 5 and sleeved outside the bearing inner ring 6, an oil gas inlet hole 51 and an oil gas discharge hole 52 obliquely arranged are radially arranged on the outer spacer ring 5, one end of the oil gas discharge hole 52 is communicated with the oil gas inlet hole 51, the other end of the oil gas discharge hole 52 faces an annular space formed by the bearing inner ring 6 and the bearing outer ring 7, a retainer body a and a ball b arranged in a ball pocket a1 of the retainer body a are arranged in the annular space.
The oil and gas inlet holes 51 and the oil and gas outlet holes 52 form an included angle of more than 90 °.
Meanwhile, the inside diameter of the oil and gas inlet hole 51 is more than twice the inside diameter of the oil and gas discharge hole 52.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (8)
1. Angular contact ball bearing holder, including holder body (a), circumference at holder body (a) is equipped with a plurality of ball pocket hole (a 1) that are circumference evenly distributed, a serial communication port, holder body (a) is including one end connection has inner circle (1) that is circumference evenly distributed inboard lintel (11), the one end that inner circle (1) was kept away from to inboard lintel (11) surpasss the central radial plane of holder body (a) slightly, two adjacent inboard lintel (11) and inner circle (1) form and are U-shaped interior cone pocket groove (12), be equipped with middle part arc contact convex surface one (13) and interior face of dodging (14) that connect gradually from outside to inside in the cell wall middle part of interior cone pocket groove (12), be equipped with respectively at the cell wall both ends of interior cone pocket groove (12) along the inner arc contact convex surface (15) that inner cone pocket groove (12) cell wall width direction set up, and one end connection has a plurality of outer lane (2) that are circumference evenly distributed outside lintel (21), two adjacent outside lintel (21) and inner circle (2) form and are U-shaped interior cone pocket groove (21) and outside lintel (21) and the outside that are outside of the one end is kept away from outside (21) and the outside of the one end (21) of the outside lintel (21) is fixed outside (21) and the outside of the outside (21) of the outside of the one (21) that is kept away from outside of the outside (21), the large inner diameter outer end of the inner conical pocket (12) faces the large inner diameter inner end of the outer conical pocket (22), the inner conical pocket (12) and the outer conical pocket (22) form the ball pocket (a 1), a middle arc-shaped contact convex surface II (23) and an inner avoidance surface II (24) which are sequentially arranged from outside to inside are arranged in the middle of the groove wall of the outer conical pocket (22), outer arc-shaped contact convex surfaces (25) which are arranged along the width direction of the groove wall of the outer conical pocket (22) are respectively arranged at two ends of the groove wall of the outer conical pocket (22), the outer arc-shaped contact convex surfaces (25) are positioned on the outer side of the inner arc-shaped contact convex surfaces (15), the balls are respectively in contact with the middle arc-shaped contact convex surfaces (13), the inner arc-shaped contact convex surfaces (15), the middle arc-shaped contact convex surfaces II (23) and the outer arc-shaped contact convex surfaces (25), the curvature radius of a contour line formed by extending connection with the ball contact positions is larger than the curvature radius of the balls, and the curvature radius of the contour line formed by extending connection with the non-contact positions of the balls is smaller than the curvature radius of the convex surfaces of the balls;
the outer side edge of the inner arc-shaped contact convex surface (15) is connected with the inner side edge of the outer arc-shaped contact convex surface (25), and an avoidance space (16) is formed between the inner arc-shaped contact convex surface (15) and the outer arc-shaped contact convex surface (25);
the two ends of the wall of the outer conical pocket groove (22) are also provided with an arc limiting convex surface (26), an arc limiting concave surface (27) and an inclined surface (28), which are respectively connected with the outer arc contact convex surface (25) and are sequentially connected from the outer side of the outer conical pocket groove (22) to the inner side of the outer conical pocket groove (22).
2. The angular contact ball bearing cage according to claim 1, wherein the outer arc-shaped contact convex surface (25), the arc-shaped restriction convex surface (26), the arc-shaped restriction concave surface (27) and the inclined surface (28) are respectively provided on both side surfaces of the outer lintel (21), the outer arc-shaped contact convex surface (25) provided on one side surface of the outer lintel (21) is symmetrically provided with the outer arc-shaped contact convex surface (25) provided on the other side surface, the arc-shaped restriction convex surface (26) provided on one side surface of the outer lintel (21) is symmetrically provided with the arc-shaped restriction convex surface (26) provided on the other side surface, the arc-shaped restriction concave surface (27) provided on one side surface of the outer lintel (21) is symmetrically provided with the inclined surface (28) provided on the other side surface, and the two inclined surfaces (28) are splayed.
3. The angular contact ball bearing cage of claim 1 wherein the first (14) and second (24) inner relief surfaces are arcuate concave surfaces.
4. Angular contact ball bearing cage according to claim 1, characterized in that the inner surface of the outer lintel (21) is an arc-shaped matching concave surface, the outer surface of the inner lintel (11) is an arc-shaped matching convex surface, and the arc-shaped matching convex surface is flush with the outer wall of the inner ring (1), the arc-shaped matching concave surface is matched with the arc-shaped matching convex surface, and the arc-shaped matching concave surface is matched with the outer wall of the inner ring (1).
5. Angular contact ball bearing cage according to claim 1, characterized in that the inner arc-shaped contact convex surfaces (15) are distributed on both side surfaces of the end part of each inner lintel (11), the inner arc-shaped contact convex surfaces (15) arranged on one side surface of the end part of the inner lintel (11) and the inner arc-shaped contact convex surfaces (15) arranged on the other side surface of the end part of the inner lintel (11) being symmetrically arranged.
6. Angular contact ball bearing cage according to claim 1, characterized in that the central arcuate contact convex surface (13) is arranged centrally in the groove wall of the inner conical pocket (12).
7. Angular contact ball bearing cage according to claim 1, characterized in that the said middle arc-shaped contact convex surface (23) is arranged in the central position of the groove wall of the outer conical pocket (22).
8. Angular contact ball bearing cage according to claim 1, characterized in that the inner lintel (11) is provided with an inner inclined surface (17) arranged obliquely downwards and inwards at the end facing away from the inner ring; an outer inclined surface (29) which is consistent with the inclined direction of the inner inclined surface (17) is arranged at one end of the outer lintel (21) which is far away from the outer ring.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910714362.XA CN110307254B (en) | 2019-08-03 | 2019-08-03 | Angular contact ball bearing retainer |
| DE102020114466.0A DE102020114466B4 (en) | 2019-08-03 | 2020-05-29 | angular contact ball bearing cage |
| JP2020095130A JP2021025655A (en) | 2019-08-03 | 2020-05-29 | Support frame of angular contact ball bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910714362.XA CN110307254B (en) | 2019-08-03 | 2019-08-03 | Angular contact ball bearing retainer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110307254A CN110307254A (en) | 2019-10-08 |
| CN110307254B true CN110307254B (en) | 2024-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910714362.XA Active CN110307254B (en) | 2019-08-03 | 2019-08-03 | Angular contact ball bearing retainer |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2021025655A (en) |
| CN (1) | CN110307254B (en) |
| DE (1) | DE102020114466B4 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114791016B (en) * | 2022-03-02 | 2024-03-19 | 湖南华园莱客科技有限公司 | Air bearing that polycyclic cup jointed |
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- 2019-08-03 CN CN201910714362.XA patent/CN110307254B/en active Active
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- 2020-05-29 JP JP2020095130A patent/JP2021025655A/en active Pending
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Also Published As
| Publication number | Publication date |
|---|---|
| DE102020114466B4 (en) | 2024-10-10 |
| JP2021025655A (en) | 2021-02-22 |
| CN110307254A (en) | 2019-10-08 |
| DE102020114466A1 (en) | 2021-02-04 |
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