CN220505578U - Stretch-formed bearing retainer blank material - Google Patents
Stretch-formed bearing retainer blank material Download PDFInfo
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- CN220505578U CN220505578U CN202320543729.8U CN202320543729U CN220505578U CN 220505578 U CN220505578 U CN 220505578U CN 202320543729 U CN202320543729 U CN 202320543729U CN 220505578 U CN220505578 U CN 220505578U
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- 239000000463 material Substances 0.000 title claims abstract description 34
- 238000004080 punching Methods 0.000 claims abstract description 12
- 238000012545 processing Methods 0.000 abstract description 11
- 239000002699 waste material Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 17
- 238000005096 rolling process Methods 0.000 description 7
- 238000012958 reprocessing Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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Abstract
The application discloses a stretched-formed blank material of a bearing retainer, which comprises a cylindrical blank body, wherein the cylindrical blank body is provided with a balancing area, an area to be punched and a basic area, the balancing area is positioned at two ends of the cylindrical blank body, the area to be punched is an area for pocket punching, and the basic area is positioned between the balancing area and the area to be punched; the thickness of the balance area is larger than that of the base area and larger than that of the area to be punched, and the mass of the balance areas at the two ends of the cylindrical blank body is equal. The bearing retainer processed by the blank material has high strength and can bear larger load; the dynamic balance performance is better, and higher rotating speed can be achieved; the waste materials generated by the pocket processing are less, and the edges of the pockets do not have obvious bulges.
Description
Technical Field
The utility model relates to the technical field of bearing retainers, in particular to a stretched and formed blank material of a bearing retainer.
Background
The main function of the bearing retainer is to avoid direct contact between the rolling bodies, to separate the rolling bodies from each other and to guide the rolling bodies to roll. When the inner ring and the outer ring of the bearing are stressed, the bearing retainer can also bear corresponding force, and in order to maintain normal rotation of the rolling bodies, the bearing retainer needs to have good strength so as to ensure that the structure of the bearing retainer is not deformed and is not broken. The bearing can rotate at a high speed, and meanwhile, the bearing retainer inside the bearing can also rotate, so that the dynamic balance of the bearing retainer is also important, otherwise, when the bearing retainer rotates inside the bearing, the bearing retainer has a tendency of deviation, the abrasion between the bearing retainer and the inner ring and the outer ring of the bearing is aggravated, and the service life of the bearing is influenced. Thus, the bearing retainer is required to have good strength and dynamic balance performance.
However, in the prior art, in order to increase the strength of the bearing retainer or to alleviate the problem of oil slinging during high-speed rotation of the bearing, a circle of flange extending radially inwards or outwards is usually stamped at the edge of one end, and although the strength of the bearing retainer is increased, the quality of two ends of the bearing retainer is different, the dynamic balance of the bearing retainer is affected, and the highest rotation speed of the bearing retainer is difficult to improve.
In addition, when the pocket punching is carried out on the side wall of the blank of the bearing retainer, the edge of the punched pocket is thickened and protrudes out of the side wall of the bearing retainer, so that the friction area of the rolling bodies and the bearing retainer is increased, the rotation of the rolling bodies is influenced, and the dynamic balance of the bearing retainer is also influenced to a certain extent; and the overall weight is larger, and the waste material that produces when the pocket punching press is also more.
Disclosure of Invention
In order to improve the strength of the bearing retainer and the dynamic balance performance, reduce waste materials in pocket processing and avoid obvious bulges at the edges of pockets, the application provides a stretched and formed blank material of the bearing retainer, which comprises a cylindrical blank body, wherein the cylindrical blank body is provided with a balance area, an area to be punched and a basic area, the balance area is positioned at two ends of the cylindrical blank body, the area to be punched is an area for pocket punching, and the basic area is positioned between the balance area and the area to be punched; the thickness of the balance area is larger than that of the base area and that of the area to be punched, and the mass of the balance areas at the two ends of the cylindrical blank body is equal. Therefore, firstly, the thickness of the balance area is larger than that of the base area, so that the two ends of the formed bearing retainer can bear larger force, and the bearing retainer can bear larger load after being installed; secondly, the balance areas at the two ends of the cylindrical blank body have equal mass, so that the dynamic balance performance can be improved while the strength of the end part is enhanced, and the bearing retainer can reach higher rotating speed; thirdly, the thickness of the area to be punched is smaller than the thickness of the foundation area, on one hand, when the pocket is punched, the edge of the pocket is extruded to the periphery, the thickness difference between the pocket and the foundation area is naturally complemented, no obvious bulge exists at the edge of the pocket, the later-stage reprocessing and grinding are not needed, the processing cost is saved, on the other hand, the area to be punched is thinner, the waste generated during the pocket punching is less, and the material cost is saved.
In order to achieve the above purpose, the present application adopts the following technical scheme:
the blank material of the bearing retainer which is formed by stretching comprises a cylindrical blank body, wherein the cylindrical blank body is provided with a balancing area, an area to be punched and a basic area, the balancing area is positioned at two ends of the cylindrical blank body, the area to be punched is an area for pocket punching, and the basic area is positioned between the balancing area and the area to be punched; the thickness of the balance area is larger than that of the base area and larger than that of the area to be punched, and the mass of the balance areas at the two ends of the cylindrical blank body is equal.
Therefore, firstly, the thickness of the balance area is larger than that of the base area, so that the two ends of the formed bearing retainer can bear larger force, and the bearing retainer can bear larger load after being installed; secondly, the balance areas at the two ends of the cylindrical blank body have equal mass, so that the dynamic balance performance can be improved while the strength of the end part is enhanced, and the bearing retainer can reach higher rotating speed; thirdly, the thickness of the area to be punched is smaller than the thickness of the foundation area, on one hand, when the pocket is punched, the edge of the pocket is extruded to the periphery, the thickness difference between the pocket and the foundation area is naturally complemented, no obvious bulge exists at the edge of the pocket, the later-stage reprocessing and grinding are not needed, the processing cost is saved, on the other hand, the area to be punched is thinner, the waste generated during the pocket punching is less, and the material cost is saved.
The blank material is formed by stamping and stretching a round material sheet.
As an alternative implementation manner of the blank material of the bearing retainer formed by stretching, the balancing area comprises a first balancing area and a second balancing area which are respectively positioned at two ends of the cylindrical blank body, the thickness of the first balancing area exceeds the basic area along one side or the inner side and the outer side of the cylindrical blank body, and the thickness of the second balancing area exceeds the basic area along one side or the inner side and the outer side of the cylindrical blank body.
As an alternative implementation manner of the blank material of the bearing retainer formed by stretching, the first balancing areas are distributed or spaced along the whole circumference of the cylindrical blank body, the second balancing areas are distributed or spaced along the whole circumference of the cylindrical blank body, and the total mass of the second balancing areas is equal to that of the first balancing areas.
As an alternative implementation of the stretch-formed bearing cage blank, the second balancing area is a flange extending radially inwardly along an end edge of the cylindrical blank.
As an alternative implementation manner of the stretched bearing retainer blank, the corner of the flange and the outer side wall of the cylindrical blank body is an arc-shaped corner.
As an alternative implementation of the stretch-formed blank of the bearing cage, the thickness of the base zone extends beyond the zone to be punched along the inner and outer sides of the cylindrical blank.
As an alternative implementation of the stretch-formed bearing cage blank, the thickness of the region to be punched is 60% -90% of the thickness of the base region.
As an alternative implementation of a stretch-formed bearing cage blank, the balancing area has a thickness of 101% -120% of the thickness of the base area.
As an alternative implementation of the stretch-formed blank of the bearing cage, the bearing cage is a conical bearing cage, and the flange is located at the end of the cylindrical blank with smaller radial dimension.
The utility model has the beneficial effects that:
1. the thickness of the balancing area is greater than that of the base area, so that the two ends of the formed bearing retainer can bear larger force and can bear larger load after the bearing retainer is installed.
2. The balance areas at the two ends of the cylindrical green body have equal mass, so that the dynamic balance performance can be improved while the strength of the end part is enhanced, and the bearing retainer can achieve higher rotating speed.
3. The thickness of the area to be punched is smaller than that of the foundation area, on one hand, when the pocket is punched, the edge of the pocket is extruded to the periphery, the thickness difference between the pocket and the foundation area is naturally complemented, no obvious bulge exists at the edge of the pocket, the later-stage reprocessing and grinding are not needed, the processing cost is saved, on the other hand, the area to be punched is thinner, the waste generated during the pocket punching is less, and the material cost is saved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:
FIG. 1 is a schematic illustration of a semi-sectional structure of an exemplary embodiment of the present application;
FIG. 2 is a schematic illustration of a semi-sectional structure of an exemplary embodiment of the present application;
FIG. 3 is a schematic view of a semi-sectional structure of an exemplary embodiment of the present application
FIG. 4 is a schematic view of a semi-sectional structure of an exemplary embodiment of the present application
FIG. 5 is a schematic view of a semi-sectional structure of an exemplary embodiment of the present application
Fig. 6 is a schematic view of a circular web structure according to an exemplary embodiment of the present application.
Reference numerals illustrate:
1. a cylindrical blank;
2. a balancing area; 21. a first balancing area; 22. a second balancing area; 23. a flange;
3. a region to be punched;
4. a base area;
5. a circular material sheet; 51. positioning holes; 52. and an exhaust hole.
Detailed Description
For a clearer understanding of the technical features, objects and effects of the present utility model, embodiments of the present utility model will now be described with reference to the drawings, in which like reference numerals refer to identical or structurally similar but functionally identical components throughout the separate views.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced in other ways than those described herein, and therefore the scope of the present utility model is not limited to the specific embodiments disclosed below.
Referring to fig. 1-5, a stretched-formed blank material of a bearing retainer comprises a cylindrical blank body 1, wherein the cylindrical blank body 1 is provided with a balance area 2, an area to be punched 3 and a basic area 4, the balance area 2 is positioned at two ends of the cylindrical blank body 1, the area to be punched 3 is an area for punching a pocket, and the basic area 4 is positioned between the balance area 2 and the area to be punched 3; the thickness of the balance area 2 is larger than that of the base area 4 and that of the area to be punched 3, and the mass of the balance areas 2 at the two ends of the cylindrical blank 1 is equal.
In this way, firstly, the thickness of the balancing area 2 is greater than the thickness of the base area 4, so that the two ends of the formed bearing retainer can bear larger force and can bear larger load after the bearing retainer is installed; secondly, the balance areas 2 at the two ends of the cylindrical blank 1 have equal mass, so that the dynamic balance performance can be improved while the strength of the end parts is enhanced, and the bearing retainer can reach higher rotating speed; thirdly, the thickness of the area to be punched 3 is smaller than the thickness of the foundation area 4, on one hand, when the pocket is punched, the edge of the pocket is extruded to the periphery, the thickness difference between the pocket and the foundation area 4 is naturally complemented, no obvious bulge exists at the edge of the pocket, the later-stage reprocessing and grinding are not needed, the processing cost is saved, on the other hand, the area to be punched 3 is thinner, the waste generated during the pocket punching is also less, and the material cost is saved.
In this application, the balancing area 2 mainly plays a role in reinforcing the stress at both ends of the bearing cage after molding, and the base area 4 mainly plays a role in supporting the overall structure.
The bearing retainer on the market at present adopts forging as raw and adopts machining production mode to mill out the finished product mostly, however the bearing retainer that this kind of technology was made is with higher costs, and process cycle is long, and the blank of forging often has the burr, and impurity distribution is uneven, easily collapses the sword in the course of working, and the processing degree of difficulty is big, and mass production is efficient.
Thus, in one embodiment, the blanks of the present application may be stamp-drawn from a circular web 5. The blank formed by stamping and stretching is easy to stamp, turn or mill, reduces the processing difficulty and the processing period, and has high mass production efficiency. In addition, the precision of the stamping and stretching forming process is higher, so that the accuracy of the thicknesses of the balance area 2, the area to be punched 3 and the base area 4 is higher, and the thickness of the balance area 2 > the thickness of the base area 4 > the thickness of the area to be punched 3 is easier to realize.
Further, in one embodiment the blanks of the present application may be formed by the following process steps:
and (3) adopting a plate with a specific width, and carrying out laser blanking to obtain a round material sheet 5 with a required size. And (3) stretching and deforming the round material sheet 5 by adopting a novel four-column closed 800T lower ejection hydraulic press. The hydraulic press adopts double control operation, ensures the safety of operation, the four-column type hydraulic slide block, ensures the stability of machine tool operation, and the lower ejection type structure is convenient for stripping and separating formed blank materials. The pressurizing stability of the hydraulic press ensures that the circular material sheet 5 is uniformly stressed and the requirement of slow bending deformation is met in the stretching deformation process, the pressure maintaining time is 5S, and the material rebound and stress concentration after bending deformation can be effectively solved. Because the web height of the blank is higher, the stretching coefficient is small, and multiple stretching deformation is adopted. The die design of the process adopts safe and reasonable stretching coefficient of 0.78, and reduces the once deformation degree of the material sheet. The stamping and stretching process adopts a design method of combining an angle and an radian by profiling, and the stretching female die is bent and deformed to a specific angle and then is slowly bent along an arc angle, so that the plastic deformation process of the circular material sheet 5 is slowed down, the stretching coefficient is increased, and the phenomenon that a blank material is wrinkled to cause product rejection is avoided.
In the process of press-stretching the circular web 5, the material is extruded by the die, and the strength is improved, whereby the structural strength of the blank material formed by press-stretching is improved.
In a specific embodiment, when the blank is stretched and bottom-cut to be formed by the circular material sheet 5, referring to fig. 6, a positioning hole 51 and an exhaust hole 52 arranged around the positioning hole 51 are arranged in the middle of the circular material sheet 5, the positioning hole 51 is used for positioning the circular material sheet 5, the deviation of the circular material sheet 5 in the punching stretching process is avoided, the exhaust air in the stretching process is increased, the exhaust hole 52 is used for increasing the exhaust air in the stretching process, simultaneously locking the bottom surface of the circular material sheet 5, reducing the uneven bottom surface, avoiding affecting the subsequent process, reducing the wave surface formed by the end surface of the blank in the stretching process, and preventing the blank from being unable to be returned after being stretched into the blank.
In one embodiment of a stretch formed bearing retainer blank, the balancing area 2 includes a first balancing area 21 and a second balancing area 22 at each end of the cylindrical blank 1, the thickness of the first balancing area 21 extending beyond the base area 4 along one or both sides of the cylindrical blank 1, and the thickness of the second balancing area 22 extending beyond the base area 4 along one or both sides of the cylindrical blank 1. The second balancing area 22 of the first balancing area 21 may be provided in different shapes depending on design requirements, functional requirements.
For example, in fig. 1, the first balance area 21 is located at the upper end of the cylindrical body 1, the thickness of the first balance area 21 exceeds the base area 4 along the inner and outer sides of the cylindrical body 1, the second balance area 22 is located at the lower end of the cylindrical body 1, and the thickness of the second balance area 22 exceeds the base area 4 along the inner side of the cylindrical body 1.
For example, in fig. 2, the first equilibrium zone 21 is located at the upper end of the cylindrical body 1, the thickness of the first equilibrium zone 21 exceeds the base zone 4 along the outside of the cylindrical body 1, the second equilibrium zone 22 is located at the lower end of the cylindrical body 1, and the thickness of the second equilibrium zone 22 exceeds the base zone 4 along the inside of the cylindrical body 1.
For example, in fig. 3, the first balancing area 21 is located at the upper end of the cylindrical blank 1, the thickness of the first balancing area 21 exceeds the base area 4 along the inner and outer sides of the cylindrical blank 1, the second balancing area 22 is located at the lower end of the cylindrical blank 1, and the thickness of the second balancing area 22 exceeds the base area 4 along the inner and outer sides of the cylindrical blank 1.
For example, in fig. 4, the first balance area 21 is located at the upper end of the cylindrical body 1, the thickness of the first balance area 21 exceeds the base area 4 along the inner and outer sides of the cylindrical body 1, the second balance area 22 is located at the lower end of the cylindrical body 1, and the thickness of the second balance area 22 exceeds the base area 4 along the inner side of the cylindrical body 1.
For example, in fig. 5, the first balancing area 21 is located at the upper end of the cylindrical blank 1, the second balancing area 22 is located at the lower end of the cylindrical blank 1, and the thickness of the first balancing area 21 and the thickness of the second balancing area 22 both exceed the base area 4 along the inner side of the cylindrical blank 1.
It will be appreciated by those skilled in the art that the specific arrangement of the first balancing area 21 and the second balancing area 22 is not limited to the above examples.
For better understanding of the description, the "upper end" and "lower end" in the above description are descriptions according to the view direction, and are not capable of unduly limiting the protection scope of this specific embodiment.
In one particular embodiment of a stretch formed bearing retainer blank, the first balancing areas 21 are distributed or spaced along the circumferential periphery of the cylindrical blank 1, and the second balancing areas 22 are distributed or spaced along the circumferential periphery of the cylindrical blank 1, with the total mass of the second balancing areas 22 being equal to the total mass of the first balancing areas 21. In this way, the arrangement of the second balancing areas 22 of the first balancing areas 21 can be set according to the design requirement and the function requirement.
In one particular embodiment of a stretch formed bearing retainer blank, the second balancing area 22 is a flange 23 extending radially inward along the end edge of the cylindrical blank 1. Referring to fig. 1, a second balancing area 22 is located at the lower end of the cylindrical blank 1, the second balancing area 22 being in the form of a flange 23. The rib 23 may be formed in the bottom cutting step after the stretching of the circular web 5, and specifically, a certain margin is left when the blank is cut after the stretching is finished, and the rib 23 is naturally formed on the bottom surface which is not completely cut, so that the strength of the molded retainer can be increased.
In one embodiment of a stretch formed bearing retainer blank, the corners of the flange 23 and the outer sidewall of the cylindrical blank 1 are arcuate corners. Thus, the stamping, stretching and natural forming are facilitated.
In one embodiment of a stretch formed bearing cage blank, the base zone 4 has a thickness that extends beyond the zone 3 to be punched along both the inner and outer sides of the cylindrical blank 1. Thus, the pocket forming position can be more accurately positioned in the middle of the thickness direction of the blank.
In a particular embodiment of the stretch-formed bearing cage blank, the thickness of the region to be punched 3 is 60% -90% of the thickness of the base region 4. The thickness of waiting to punch a hole district 3 is too thin, can weaken the intensity of blank material after the shaping, and the thickness of waiting to punch a hole district 3 is too thick, can extrude to the periphery when pocket punch forming, surpasses basic district 4, still needs to grind the level afterwards to influence pocket intensity, increase processing procedure, if not polish, not only can increase the area of contact of rolling element and pocket, bring more frictional heat, still can cause certain influence to dynamic balance performance. Thus, it is most appropriate that the thickness of the area to be punched 3 is 60% -90% of the thickness of the base area 4.
In one particular embodiment of a stretch formed bearing cage blank, the balance zone 2 has a thickness of 101% -120% of the thickness of the base zone 4. Too thick a balancing area 2 will affect the structural shape of the bearing cage after forming, and too thin a balancing area 2 will not be sufficient to strengthen the structural strength, whereby it is most appropriate that the thickness of the balancing area 2 is 101% -120% of the thickness of the base area 4.
Referring to fig. 1, in a particular embodiment of a drawn bearing cage blank, the bearing cage is a conical bearing cage, and the flange 23 is located at the smaller radial dimension end of the cylindrical blank 1. The convenient rib 23 is naturally formed after the bottom cutting process after stretching.
In order to more clearly illustrate the thickness differences of the balancing area 2, the area to be punched 3 and the base area 4, the thickness differences are appropriately exaggerated somewhat in fig. 1-5. In actual processing, the degree of thickness difference among the balancing area 2, the area to be punched 3 and the base area 4 can be designed according to actual requirements.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for system embodiments, since they are substantially similar to method embodiments, the description is relatively simple, as relevant to see a section of the description of method embodiments.
The foregoing is merely exemplary of the present utility model and is not intended to limit the present utility model. Various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are to be included in the scope of the claims of the present utility model.
Claims (9)
1. The blank material of the bearing retainer is characterized by comprising a cylindrical blank body, wherein the cylindrical blank body is provided with a balancing area, an area to be punched and a basic area, the balancing area is positioned at two ends of the cylindrical blank body, the area to be punched is an area for pocket punching, and the basic area is positioned between the balancing area and the area to be punched; the thickness of the balance area is larger than that of the base area and larger than that of the area to be punched, and the mass of the balance areas at the two ends of the cylindrical blank body is equal.
2. The stretch-formed bearing retainer blank of claim 1, wherein the balancing areas comprise a first balancing area and a second balancing area at each end of the cylindrical body, the thickness of the first balancing area extending beyond the base area along one or both sides of the cylindrical body, and the thickness of the second balancing area extending beyond the base area along one or both sides of the cylindrical body.
3. The stretch-formed bearing retainer blank of claim 2, wherein the first balancing areas are distributed or spaced along the circumferential periphery of the cylindrical blank and the second balancing areas are distributed or spaced along the circumferential periphery of the cylindrical blank, the total mass of the second balancing areas being equal to the total mass of the first balancing areas.
4. A stretch-formed bearing retainer blank according to claim 2, wherein the second balancing area is a flange extending radially inwardly along an end edge of the cylindrical blank.
5. The stretch-formed bearing retainer blank of claim 4, wherein the corners of the flange and the outer sidewall of the cylindrical body are arcuate corners.
6. A stretch-formed bearing retainer blank according to claim 1, wherein the thickness of the base zone extends beyond the zone to be punched along the inner and outer sides of the cylindrical blank.
7. A stretch formed bearing retainer blank according to claim 1, wherein the thickness of the region to be punched is 60% -90% of the thickness of the base region.
8. A stretch-formed bearing retainer blank according to claim 1, wherein the balance zone has a thickness of 101% -120% of the thickness of the base zone.
9. A stretch-formed bearing retainer blank according to claim 4, wherein the bearing retainer is a conical bearing retainer and the flange is located at the smaller radial dimension end of the cylindrical body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320543729.8U CN220505578U (en) | 2023-03-16 | 2023-03-16 | Stretch-formed bearing retainer blank material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320543729.8U CN220505578U (en) | 2023-03-16 | 2023-03-16 | Stretch-formed bearing retainer blank material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220505578U true CN220505578U (en) | 2024-02-20 |
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ID=89865371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320543729.8U Active CN220505578U (en) | 2023-03-16 | 2023-03-16 | Stretch-formed bearing retainer blank material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220505578U (en) |
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- 2023-03-16 CN CN202320543729.8U patent/CN220505578U/en active Active
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