CN115217851A - Low-cost creep-resistant bearing and surface flatness detection system thereof - Google Patents
Low-cost creep-resistant bearing and surface flatness detection system thereof Download PDFInfo
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- CN115217851A CN115217851A CN202210840115.6A CN202210840115A CN115217851A CN 115217851 A CN115217851 A CN 115217851A CN 202210840115 A CN202210840115 A CN 202210840115A CN 115217851 A CN115217851 A CN 115217851A
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- Prior art keywords
- creep
- outer ring
- resistant bearing
- rubber coating
- low
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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
- F16C33/58—Raceways; Race rings
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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
- 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
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/30—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a low-cost creep-resistant bearing and a surface flatness detection system thereof, wherein the creep-resistant bearing comprises an outer ring, an inner ring and a rolling body arranged between the outer ring and the inner ring, and the outer surface of the outer ring is provided with a rubber coating made of a high-temperature-resistant rubber material; the thickness of the rubber coating is reduced from the axial center position of the outer ring to two ends, and the rubber coating also coats round corners at two ends of the outer ring. The surface smoothness detection system is matched with the rubber coating quality detection, can be matched with a camera to capture images, and is matched with the rubber coating smoothness of image recognition.
Description
Technical Field
The invention relates to a low-cost creep-resistant bearing and a surface flatness detection system thereof.
Background
At present, in order to achieve the aim of light weight of automobiles, the electric box of the new energy automobile is generally designed by adopting a thin-wall shell. The rigidity of the thin-wall shell is reduced, and the deformation amount influenced by temperature is inconsistent due to the fact that the thermal expansion coefficients of the bearing material and the shell material are different. Due to thermal deformation, a gap may exist between the bearing mating surfaces, relative sliding may occur, creep may occur between the mating surfaces, and wear of the housing may also occur. At present, in order to prevent creep deformation, bearing products with O-shaped rings on outer rings and bearing products with antiwear agents coated on the outer surfaces of bearings are available. The former reduces the strength of the ferrule, and the O-ring falls off during actual use. The latter method is uneconomical because of its high cost, and the former method is uneconomical because of its high cost in processing.
Disclosure of Invention
In view of the disadvantages of the prior art, an object of the present invention is to provide a low-cost creep-resistant bearing and a surface flatness detection system thereof, which can prevent creep while maintaining high strength at low cost.
In order to realize the purpose, the invention provides the following technical scheme: a low-cost creep-resistant bearing comprises an outer ring, an inner ring and a rolling body arranged between the outer ring and the inner ring, wherein the outer surface of the outer ring is provided with a rubber coating made of a high-temperature-resistant rubber material; the thickness of the rubber coating is reduced from the axial center position of the outer ring to two ends, and the rubber coating also coats round corners at two ends of the outer ring.
As a further improvement of the invention, the outer surface of the outer ring is a blank surface.
As a further improvement of the present invention, the axial center position of the outer ring is depressed downward, and the encapsulation simultaneously fills the depressed portion.
As a further improvement of the invention, the surface of the rubber coating is provided with a plurality of annular grooves along the circumferential direction of the outer ring.
As a further improvement of the invention, the number of the grooves is two, and the grooves are symmetrically distributed on two sides of the axial center position of the outer ring close to the position of the central bulge of the rubber coating.
As a further improvement of the invention, the section of the groove is arc-shaped, and the joint of the groove and the encapsulation surface is provided with arc-shaped transition.
As a further improvement of the invention, the surface of the rubber coating is provided with a plurality of segmental grooves.
The surface smoothness detection system matched with the creep-resistant bearing comprises the low-cost creep-resistant bearing, a camera for capturing an image of the edge encapsulation of the outer ring of the creep-resistant bearing, a controller connected with the camera, and a rotating base for mounting the creep-resistant bearing; the rotating base is in interference connection with an inner ring of the creep-resistant bearing, and the camera is arranged at the position of the outer ring edge encapsulation of the creep-resistant bearing so as to capture the image change of the outer ring edge encapsulation in a rotating state; the controller acquires images captured by the camera, superposes the images and acquires the maximum change interval of the outer ring edge encapsulation; the controller is internally provided with a maximum offset value, acquires the superposed images and acquires the position of the position where the edge encapsulation images are overlapped most as a reference line, and simultaneously acquires the position where the edge encapsulation images are maximally offset towards two sides and compares the position with the reference line to acquire an offset, if the offset exceeds the preset maximum offset value, the controller is judged to be unqualified, and if not, the controller is judged to be qualified.
As a further improvement of the present invention, the controller determines whether the image is overlapped at the most in units of an interval when the edge-wrapped image is overlapped at the most, and a line of a center position where the image is overlapped at the most is used as a reference line.
As a further improvement of the invention, the camera acquires and overlaps the edge encapsulation images of the creep-resistant bearing outer ring at intervals.
The invention has the beneficial effects that:
1. the heat treatment device has the advantages of low cost, and the effect of compensating deformation caused by heat treatment, and can avoid the problem of creep caused by slipping between an assembly part and the outer ring.
2. Compared with the O-shaped ring scheme in the prior art, the strength of the outer ring is not reduced.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is an enlarged view of a portion of the outer ring of the embodiment of the present invention with a recess;
FIG. 3 is an enlarged view of a portion of the structure of an embodiment of the present invention in which a groove is formed in the encapsulation;
FIG. 4 is a schematic structural diagram of a detection system according to the present invention.
Reference numerals: 1. an outer ring; 2. an inner ring; 3. a rolling body; 4. encapsulating; 5. recessing; 6. a groove; 7. a camera; 8. a controller; 9. the base is rotated.
Detailed Description
The invention will be further described in detail with reference to the following examples, which are given in the accompanying drawings.
As shown with reference to figures 1-4,
a low-cost creep-resistant bearing comprises an outer ring 1, an inner ring 2 and a rolling body 3 arranged between the outer ring 1 and the inner ring 2, wherein the outer surface of the outer ring 1 is provided with an encapsulated rubber 4 made of high-temperature-resistant rubber; the thickness of the rubber coating 4 is reduced from the axial center position of the outer ring 1 to two ends, and the rubber coating 4 also coats fillets at two ends of the outer ring 1.
Creep of the bearing cup 1 is generally caused by deformation of the cup 1 due to temperature problems and by clearance between the mating surfaces of the bearing and the assembly, resulting in creep and slippage. This scheme is through rubber coating 4 on the surface of outer lane 1 to adopt high temperature resistant rubber material, can avoid high temperature to cause the influence to it. Under the high temperature condition, outer lane 1 takes place deformation, when the fitting surface between outer lane 1 and the assembly part appears the clearance this moment, can fill through rubber coating 4, in order to satisfy the interference requirement, avoid appearing the creep phenomenon of skidding, and under this structure, the thickness of rubber coating 4 diminishes to both sides from the centre, the centre is the biggest thickness promptly, the assembly of the bearing of being convenient for this moment, resistance when reducing the installation, and because be rubber coating 4 state, if when axial installation, receive too big resistance and probably lead to rubber coating 4 to drop, and both sides thickness reduces when the installation, can provide the great partial deformation space of middle thickness, the great part of thickness can be to both sides deformation when letting the assembly, can let the part that the extrusion warp increase the contact area of contact rubber coating 4 and assembly part, improve the friction effect. And compare in prior art, can not cut outer lane 1, avoid reducing the intensity of outer lane 1. The rubber coating 4 also coats round corners at two ends of the outer ring 1, so that the stability during installation can be further improved, and the probability of falling off of the rubber coating 4 in the installation process is reduced.
In addition, the blank can be directly used on the outer surface of the outer ring 1, finish machining is not needed, the blank can be directly wrapped in the rubber coating 4, the processing steps are reduced, the blank surface is more suitable for the adhesion of the rubber coating 4, and the stability of the rubber coating 4 can be improved.
In further arrangement, the axial center position of the outer ring 1 is recessed 5 downwards, and the rubber coating 4 fills the recessed 5 part at the same time.
Optionally, if the strength requirement on the outer ring 1 is not very high, the setting can be adopted, the recess 5 is arranged at the central position of the outer ring 1, and the recess 5 is utilized to increase the amount of the rubber coating 4, so that on one hand, a deformation accommodating space of the rubber coating 4 of the bearing in the assembling process can be provided, the rubber coating 4 can be extruded into the recess 5 when being extruded and deformed, the overflow of the rubber coating 4 is reduced, and the rubber coating 4 can be temporarily stored to provide a sufficient gap filling effect.
In another alternative mode, a plurality of annular grooves 6 are formed in the surface of the rubber coating 4 along the circumferential direction of the outer ring 1. A plurality of annular recesses 6 can let rubber coating 4 be receiving extrusion deformation's in-process, avoid the deformation transition to lead to spilling over the both ends of outer lane 1, and the part of deformation can be used for the fitting surface of laminating assembly part simultaneously. Furthermore, the number of the grooves 6 is two, and the grooves are symmetrically distributed on two sides of the axial center position of the outer ring 1 and close to the center protrusion position of the rubber coating 4. Grooving is carried out on the two rubber coating layers, the rubber coating 4 in the center position can be filled into the grooves 6 on the two sides in the extrusion deformation process, the deformation amount of the position with the largest center thickness fills the position of the groove 6, the rubber coating 4 and the gap can be filled in the position close to the center, and interference is fully carried out by means of the center position with the larger thickness of the rubber coating 4. In addition, the section of the groove 6 is preferably arc-shaped, and the connection part of the groove and the surface of the rubber coating 4 is provided with arc-shaped transition. This setting down can let the intensity transition of rubber coating 4 more even, avoids rubber coating 4 to receive quick damaged or fracture after the extrusion, improves life.
In a further alternative, the surface of the encapsulation 4 is provided with several segmental grooves. Similarly, the selection is performed when the strength requirement is not high. The recess of segment type can provide the limiting displacement of a direction, when the recess is filled into to rubber coating 4, can let rubber coating 4 have the spacing effect of axial and circumference, reduces the skew of rubber coating 4 in the bearing course of operation.
The creep-resistant bearing structure is matched with the above creep-resistant bearing structure, the quality of the rubber coating 4 needs to be detected, and a low-cost creep-resistant bearing surface smoothness detection system is also provided, and comprises the creep-resistant bearing, a camera 7 for capturing rubber coating images of the edge of the outer ring 1 of the creep-resistant bearing, a controller 8 connected with the camera 7, and a rotating base 9 for installing the creep-resistant bearing; the rotating base 9 is in interference connection with the inner ring 2 of the creep-resistant bearing, and the camera 7 is arranged at the position of the edge rubber coating 4 of the outer ring 1 of the creep-resistant bearing so as to capture the image change of the edge rubber coating 4 of the outer ring 1 in a rotating state; the controller 8 acquires images captured by the camera 7, superposes the images and acquires the maximum change interval of the edge encapsulation 4 of the outer ring 1; the controller 8 is internally provided with a maximum offset value, the controller 8 acquires the superposed images and acquires the position of the position where the edge encapsulated images are overlapped most as a reference line, and simultaneously acquires the position where the edge encapsulated images are maximally offset towards two sides and compares the position with the reference line to acquire an offset, if the offset exceeds the preset maximum offset value, the controller is judged to be unqualified, and if not, the controller is judged to be qualified.
In the scheme, after the creep-resistant bearing is installed on a base, an image of the change of the thickness of the rubber coating 4 (namely, an edge rubber coating image of the outer ring 1) is captured by rotating the outer ring 1 and matching with a camera 7, the edge rubber coating image of the outer ring 1 is analyzed by matching with a controller 8, the rubber coating image of the edge of the outer ring 1 in the rotating process is obtained at first according to a certain frame number (namely, the edge rubber coating image of the creep-resistant bearing outer ring 1 is obtained at intervals), and meanwhile, a plurality of obtained pictures are overlapped. And in the overlapping process, comparing to obtain a position with the most overlapped edge lines as a reference line, comparing the reference line to two sides, obtaining the offset of the edge line with the maximum deviation, comparing the offset with the reference line, judging whether the offset exceeds a preset maximum offset value, and if so, judging that the edge line is unqualified and needing to be encapsulated again by 4. Based on this detection, can let the effect of rubber coating 4 obtain control, can ensure that outer lane 1 homoenergetic when the installation produces deformation in everywhere provides sufficient packing, avoids still producing the problem of skidding because partial position is filled not enough.
Preferably, the controller 8 determines whether the image is overlapped at the maximum in units of intervals when the edge-wrapped image is overlapped at the maximum, and a line of a center position of the image overlapped at the maximum is used as a reference line.
The mode of obtaining the most overlapped edge encapsulated images by using the interval unit can be used for analyzing more quickly, and the speed of obtaining the overlapped line is higher.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (10)
1. A low-cost creep-resistant bearing comprises an outer ring, an inner ring and a rolling body arranged between the outer ring and the inner ring, and is characterized in that the outer surface of the outer ring is provided with a rubber coating made of a high-temperature-resistant rubber material; the thickness of the rubber coating is reduced from the axial center position of the outer ring to two ends, and the rubber coating also coats round corners at two ends of the outer ring.
2. The low cost creep resistant bearing of claim 1 wherein the outer surface of the outer race is a blank surface.
3. The low cost creep resistant bearing of claim 1 wherein the axially central location of the outer race is recessed downward and the encapsulation simultaneously fills the recessed portion.
4. The low-cost creep resistant bearing of claim 1, wherein the encapsulated surface is provided with a plurality of annular grooves along a circumferential direction of the outer ring.
5. The low cost creep resistant bearing of claim 4 wherein the number of grooves is two and the grooves are symmetrically distributed on both sides of the axial center of the outer ring near the center of the center protrusion of the encapsulation.
6. The low cost creep resistant bearing of claim 4 wherein the cross section of the groove is arcuate with an arcuate transition at the junction with the encapsulated surface.
7. The low cost creep resistant bearing of claim 1 wherein the encapsulated surface is provided with a plurality of scalloped grooves.
8. A surface flatness detection system of a low-cost creep-resistant bearing is characterized by comprising the low-cost creep-resistant bearing as claimed in any one of claims 1 to 6, a camera for capturing an image of an edge rubber coating of an outer ring of the creep-resistant bearing, a controller connected with the camera, and a rotating base for mounting the creep-resistant bearing; the rotating base is in interference connection with an inner ring of the creep-resistant bearing, and the camera is arranged at the position of the outer ring edge encapsulation of the creep-resistant bearing so as to capture the image change of the outer ring edge encapsulation in a rotating state; the controller acquires images captured by the camera, superposes the images and acquires the maximum change interval of the outer ring edge encapsulation; the controller is internally provided with a maximum offset value, acquires the superposed images and acquires the position of the position where the edge encapsulation images are overlapped most as a reference line, and simultaneously acquires the position where the edge encapsulation images are maximally offset towards two sides and compares the position with the reference line to acquire an offset, if the offset exceeds the preset maximum offset value, the controller is judged to be unqualified, and if not, the controller is judged to be qualified.
9. The surface flatness detecting system according to claim 8, wherein the controller determines whether the image is overlapped at the most in units of intervals when the edge-wrapped image is overlapped at the most, and a line of a center position where the image is overlapped at the most is used as a reference line.
10. The surface flatness detection system of claim 8, wherein the camera captures and superimposes creep-resistant bearing outer race edge encapsulation images at intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210840115.6A CN115217851B (en) | 2022-07-14 | 2022-07-14 | Low-cost creep-resistant bearing and surface flatness detection system thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210840115.6A CN115217851B (en) | 2022-07-14 | 2022-07-14 | Low-cost creep-resistant bearing and surface flatness detection system thereof |
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| Publication Number | Publication Date |
|---|---|
| CN115217851A true CN115217851A (en) | 2022-10-21 |
| CN115217851B CN115217851B (en) | 2023-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210840115.6A Active CN115217851B (en) | 2022-07-14 | 2022-07-14 | Low-cost creep-resistant bearing and surface flatness detection system thereof |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05240255A (en) * | 1992-02-27 | 1993-09-17 | Ntn Corp | Electrolytic corrosion preventive rolling bearing |
| JPH1078041A (en) * | 1996-08-30 | 1998-03-24 | Ntn Corp | Rolling bearing and its mounting structure |
| JPH10159841A (en) * | 1996-11-28 | 1998-06-16 | Ntn Corp | Rolling bearing |
| JP2001099176A (en) * | 1999-09-30 | 2001-04-10 | Ntn Corp | Sealed rolling bearing |
| JP2004092750A (en) * | 2002-08-30 | 2004-03-25 | Nsk Ltd | Anti-friction bearing |
| JP2009287658A (en) * | 2008-05-29 | 2009-12-10 | Nsk Ltd | Electrolytic corrosion preventive insulating rolling bearing |
| JP2011112192A (en) * | 2009-11-30 | 2011-06-09 | Nsk Ltd | Creep prevention rolling bearing |
| CN107023563A (en) * | 2017-05-29 | 2017-08-08 | 苏州固特斯电子科技有限公司 | A kind of outer glue binding structure of bearing |
| CN107100938A (en) * | 2017-05-29 | 2017-08-29 | 苏州固特斯电子科技有限公司 | A kind of bearing rubber-wrapping structure |
| CN109307011A (en) * | 2017-07-28 | 2019-02-05 | 株式会社捷太格特 | Sliding door rolling bearing |
| JP2019206979A (en) * | 2018-05-28 | 2019-12-05 | セイコーインスツル株式会社 | Bearing and drive module |
| JP2019206980A (en) * | 2018-05-28 | 2019-12-05 | セイコーインスツル株式会社 | Bearing and drive module |
| CN216206057U (en) * | 2021-10-28 | 2022-04-05 | 佛山市梦成光学科技有限公司 | Coating machine capable of detecting gluing thickness on line |
-
2022
- 2022-07-14 CN CN202210840115.6A patent/CN115217851B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05240255A (en) * | 1992-02-27 | 1993-09-17 | Ntn Corp | Electrolytic corrosion preventive rolling bearing |
| JPH1078041A (en) * | 1996-08-30 | 1998-03-24 | Ntn Corp | Rolling bearing and its mounting structure |
| JPH10159841A (en) * | 1996-11-28 | 1998-06-16 | Ntn Corp | Rolling bearing |
| JP2001099176A (en) * | 1999-09-30 | 2001-04-10 | Ntn Corp | Sealed rolling bearing |
| JP2004092750A (en) * | 2002-08-30 | 2004-03-25 | Nsk Ltd | Anti-friction bearing |
| JP2009287658A (en) * | 2008-05-29 | 2009-12-10 | Nsk Ltd | Electrolytic corrosion preventive insulating rolling bearing |
| JP2011112192A (en) * | 2009-11-30 | 2011-06-09 | Nsk Ltd | Creep prevention rolling bearing |
| CN107023563A (en) * | 2017-05-29 | 2017-08-08 | 苏州固特斯电子科技有限公司 | A kind of outer glue binding structure of bearing |
| CN107100938A (en) * | 2017-05-29 | 2017-08-29 | 苏州固特斯电子科技有限公司 | A kind of bearing rubber-wrapping structure |
| CN109307011A (en) * | 2017-07-28 | 2019-02-05 | 株式会社捷太格特 | Sliding door rolling bearing |
| JP2019206979A (en) * | 2018-05-28 | 2019-12-05 | セイコーインスツル株式会社 | Bearing and drive module |
| JP2019206980A (en) * | 2018-05-28 | 2019-12-05 | セイコーインスツル株式会社 | Bearing and drive module |
| CN216206057U (en) * | 2021-10-28 | 2022-04-05 | 佛山市梦成光学科技有限公司 | Coating machine capable of detecting gluing thickness on line |
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| Publication number | Publication date |
|---|---|
| CN115217851B (en) | 2023-09-05 |
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