CN115217851B - 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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- CN115217851B CN115217851B CN202210840115.6A CN202210840115A CN115217851B CN 115217851 B CN115217851 B CN 115217851B CN 202210840115 A CN202210840115 A CN 202210840115A CN 115217851 B CN115217851 B CN 115217851B
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- Prior art keywords
- outer ring
- creep
- resistant bearing
- image
- rubber coating
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- 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
-
- 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
-
- 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)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The application discloses a low-cost creep-resistant bearing and a surface flatness detection system thereof, comprising an outer ring, an inner ring and rolling bodies 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 high-temperature-resistant rubber; the thickness of rubber coating reduces the setting from the axial central point of outer lane to both ends, the rubber coating still coats the fillet at outer lane both ends. The surface flatness detection system is matched with the quality detection of encapsulation, can be matched with a camera to capture images, and is matched with the encapsulation flatness of image identification.
Description
Technical Field
The application relates to a low-cost creep-resistant bearing and a surface flatness detection system thereof.
Background
At present, in order to achieve the light weight of automobiles, the new energy automobile electric box generally adopts a thin-wall shell design. The rigidity of the thin-wall shell is reduced, and the deformation amount influenced by temperature is inconsistent due to different thermal expansion coefficients of the bearing material and the shell material. Because of thermal deformation, gaps may exist between the bearing mating surfaces to generate relative sliding, creep occurs between the mating surfaces, and wear occurs to the housing. Currently, in order to prevent creep, bearing products with O-shaped rings on the outer ring and bearing products with antiwear agents coated on the outer surface of the bearing are available. The former may reduce the strength of the ferrule and, during actual use, the O-ring may come off. The latter is coated with a solid lubricating film, which is costly and uneconomical, and the same former also generates a higher cost during processing, and thus is not economical in practical use.
Disclosure of Invention
In view of the shortcomings of the prior art, an object of the present application is to provide a low-cost creep-resistant bearing and a surface flatness detection system thereof, which can maintain high strength and prevent creep at low cost.
In order to achieve the above purpose, the present application provides the following technical solutions: the low-cost creep-resistant bearing comprises an outer ring, an inner ring and rolling bodies 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 high-temperature-resistant rubber; the thickness of rubber coating reduces the setting from the axial central point of outer lane to both ends, the rubber coating still coats the fillet at outer lane both ends.
As a further improvement of the application, the outer surface of the outer ring is a blank surface.
As a further improvement of the present application, the axial center position of the outer ring is recessed downward, and the encapsulation simultaneously fills the recessed portion.
As a further improvement of the application, the surface of the encapsulation is provided with a plurality of annular grooves along the circumferential direction of the outer ring.
As a further improvement of the application, the number of the grooves is two, and the grooves are symmetrically distributed at the two sides of the axial center position of the outer ring and are close to the positions of the rubber coating center protrusions.
As a further improvement of the application, the cut-off surface 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 development of the application, the surface of the encapsulation is provided with a number of recesses in the shape of circular segments.
The surface flatness detection system 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 installing the creep-resistant bearing; the rotating base is in interference connection with the 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, superimposes 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 overlapped image and the position where the edge-wrapped image is overlapped most as a datum line, acquires the position where the edge-wrapped image is offset to two sides the most and compares the position with the datum line to obtain an offset, if the offset exceeds the preset maximum offset value, the image is judged to be unqualified, and otherwise, the image is judged to be qualified.
As a further improvement of the present application, the controller judges whether or not the image overlap is the most overlapping place in units of sections when the edge-encapsulated image overlap is the most overlapping place, and a line of a center position of the image overlap most is used as a reference line.
As a further improvement of the application, the camera acquires the edge-encapsulated images of the creep-resistant bearing outer ring at intervals and performs superposition.
The application has the beneficial effects that:
1. the device has the advantages of low cost, effect of compensating deformation caused by heat treatment, and capability of avoiding creep caused by slipping between the assembly 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 application;
FIG. 2 is an enlarged schematic view of a portion of an embodiment of the outer ring with a recess according to the present application;
FIG. 3 is an enlarged schematic view of a portion of the structure of an embodiment of the encapsulated groove of the present application;
FIG. 4 is a schematic diagram of a detection system according to the present application.
Reference numerals: 1. an outer ring; 2. an inner ring; 3. a rolling element; 4. encapsulating; 5. a recess; 6. a groove; 7. a camera; 8. a controller; 9. and (5) rotating the base.
Detailed Description
The application will be further described in detail with reference to examples of embodiments shown in the drawings.
As shown with reference to figures 1-4,
the low-cost creep-resistant bearing comprises an outer ring 1, an inner ring 2 and rolling bodies 3 arranged between the outer ring 1 and the inner ring 2, wherein the outer surface of the outer ring 1 is provided with a rubber coating 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 covers round corners at two ends of the outer ring 1.
The general creep of the bearing outer ring 1 is caused by deformation of the outer ring 1 due to temperature problems, and a gap is formed between the matching surfaces of the bearing and the assembly, so that the bearing outer ring has slip creep. This scheme is through the rubber coating 4 on the surface of outer lane 1 to adopt high temperature resistant rubber material, can avoid high temperature to cause it to influence. Under the high temperature condition, outer lane 1 takes place deformation, when the clearance appears in the mating surface between outer lane 1 and the assembly part at this moment, can fill through rubber coating 4, in order to satisfy the interference requirement, avoid appearing the creep phenomenon that skids, and under this structure, rubber coating 4's thickness diminishes to both sides by the centre, be the biggest thickness in the middle promptly, be convenient for the assembly of bearing this moment, reduce the resistance when installing, 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 partial deformation space that middle thickness is great, the part that the thickness is great can be to both sides deformation when letting the assembly, can let the part that extrudees deformation increase contact rubber coating 4 and assembly part, improve the friction effect. And compared with the prior art, the outer ring 1 is not cut, so that the strength of the outer ring 1 is prevented from being reduced. The rubber coating 4 also coats the round corner parts at the two ends of the outer ring 1, so that the stability during installation can be further improved, and the falling probability of the rubber coating 4 in the installation process is reduced.
Besides, the outer surface of the outer ring 1 can be directly used as a blank, finish machining is not needed, the blank can be directly covered by the rubber coating 4, the processing steps are reduced, the surface of the blank is more suitable for adhesion of the rubber coating 4, and the covering stability of the rubber coating 4 can be improved.
In a further arrangement, the central position of the outer ring 1 in the axial direction is recessed 5 downwards, and the encapsulation 4 fills the recessed 5 part at the same time.
Optionally, if the strength requirement to outer lane 1 is not very high, can adopt this setting, through set up sunken 5 in the central point of outer lane 1, utilize this sunken 5 to increase rubber coating 4 volume, on the one hand can provide the rubber coating 4 deformation accommodation space of bearing in the assembly process, can squeeze into this sunken 5 when rubber coating 4 extrusion deformation, reduce rubber coating 4 and spill over, can temporarily store rubber coating 4 and provide sufficient clearance filling effect.
In another alternative, the surface of the encapsulation 4 is provided with a plurality of annular grooves 6 along the circumferential direction of the outer ring 1. The annular grooves 6 can enable the rubber coating 4 to be extruded and deformed, so that deformation transition is avoided to cause overflowing of two ends of the outer ring 1, and deformed parts can be used for fitting surfaces. Further, the number of the grooves 6 is two, and the grooves are symmetrically distributed at the two sides of the axial center position of the outer ring 1 and are close to the positions of the protrusions of the center of the rubber coating 4. The two grooves are grooved, the rubber coating 4 at the central position can be filled into the grooves 6 at the two sides in the extrusion deformation process, the deformation of the position with the largest central thickness is used for filling the position of the groove 6, the rubber coating 4 and the gap can be filled at the position close to the center, and interference is carried out fully by the central position with the larger thickness of the rubber coating 4. It is further preferred that the cut-off surface of the recess 6 is arc-shaped and has an arc-shaped transition at the junction with the surface of the encapsulation 4. Can let the intensity transition of rubber coating 4 more even under this setting, avoid rubber coating 4 to receive quick damage or fracture after the extrusion, improve life.
In yet another alternative, the surface of the encapsulation 4 is provided with a number of circular recesses. Similarly, the selection is made when the strength requirement is not high. The recess of ball defect formula can provide the spacing effect of individual direction, when rubber coating 4 fills in the recess, can let rubber coating 4 have axial and circumferential spacing effect, reduces the skew of rubber coating 4 in the bearing course of working.
The surface flatness detection system of the low-cost creep-resistant bearing is further provided, and comprises the creep-resistant bearing, a camera 7 for capturing images of the edge encapsulation 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 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, superimposes 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 superimposed image and acquires the position where the edge-encapsulated image is overlapped most as a datum line, and simultaneously acquires the position where the edge-encapsulated image is offset to two sides most and compares the position with the datum line to acquire the offset, if the offset exceeds the preset maximum offset value, the offset is judged to be unqualified, and otherwise, the offset is judged to be qualified.
In this scheme, after installing creep-resistant bearing on the base, catch the image of the change of rubber coating 4 thickness (namely outer lane 1 edge rubber coating image) through the mode that rotates outer lane 1 cooperation camera 7 simultaneously, cooperate controller 8 to the analysis of outer lane 1 edge rubber coating image, acquire the rubber coating image of outer lane 1 edge in the rotation in-process at certain frame number at first (namely acquire creep-resistant bearing outer lane 1 edge rubber coating image through the interval), overlap the many photos that will acquire simultaneously. And in the overlapping process, comparing the position with the most overlapped acquired edge line as a datum line, comparing the two sides of the datum line, acquiring the offset of the edge line with the greatest offset, comparing the offset with the datum line, judging whether the offset exceeds a preset maximum offset value, judging that the product is unqualified if the product exceeds the preset maximum offset value, and re-encapsulating the product 4. Based on this detection, the effect of the encapsulation 4 can be controlled, and when the outer ring 1 is deformed everywhere during installation, sufficient filling can be provided, and the problem of slipping due to insufficient filling of part of the positions can be avoided.
Preferably, the controller 8 determines whether the image overlap is the most overlapping position in units of sections when the edge-encapsulated image overlap is the most overlapping position, and a line of a center position of the most overlapping position is used as the reference line.
The mode of acquiring the most overlapping of the edge-encapsulated images by using interval units can be used for analyzing more rapidly, and the speed of acquiring overlapping lines is higher.
The above description is only a preferred embodiment of the present application, and the protection scope of the present application is not limited to the above examples, and all technical solutions belonging to the concept of the present application belong to the protection scope of the present application. It should be noted that modifications and adaptations to the present application may occur to one skilled in the art without departing from the principles of the present application and are intended to be within the scope of the present application.
Claims (9)
1. The surface flatness detection system of the low-cost creep-resistant bearing is characterized by comprising 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 installing the creep-resistant bearing;
the low-cost creep-resistant bearing comprises an outer ring, an inner ring and rolling bodies 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 high-temperature-resistant rubber; 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 rotating base is in interference connection with the 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, superimposes 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 overlapped image and the position where the edge-wrapped image is overlapped most as a datum line, acquires the position where the edge-wrapped image is offset to two sides the most and compares the position with the datum line to obtain an offset, if the offset exceeds the preset maximum offset value, the image is judged to be unqualified, and otherwise, the image is judged to be qualified.
2. The surface smoothness detection system according to claim 1, wherein the controller determines whether or not the image overlap is the most overlapping portion in units of sections when the edge-encapsulated image overlap is the most overlapping portion, and wherein a line of a center position of the image overlap most is the reference line.
3. The surface smoothness detection system according to claim 2, wherein the cameras acquire and superimpose creep-resistant bearing outer ring edge encapsulation images at intervals.
4. The low cost creep resistant bearing surface flatness detection system of claim 1, wherein the outer ring outer surface is a blank face.
5. The system for detecting the surface flatness of a low cost creep resistant bearing of claim 1, wherein the central position in the axial direction of the outer ring is recessed downward, and the encapsulation simultaneously fills the recessed portion.
6. The system of claim 1, wherein the encapsulated surface is formed with a plurality of annular grooves along the circumferential direction of the outer race.
7. The system for detecting the surface flatness of a low cost creep resistant bearing of claim 6, wherein the number of grooves is two, and symmetrically distributed at two sides of the axial center position of the outer ring near the center protrusion of the encapsulation.
8. The system of claim 6, wherein the groove has an arcuate cross-section and has an arcuate transition at the junction with the encapsulated surface.
9. The system of claim 1, wherein the encapsulated surface is provided with a plurality of scalloped grooves.
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 |
Applications Claiming Priority (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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115217851A CN115217851A (en) | 2022-10-21 |
| CN115217851B true 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
|---|---|
| CN115217851A (en) | 2022-10-21 |
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