CN209458289U - A kind of high revolving speed deep groove ball bearing of automobile gearbox - Google Patents
A kind of high revolving speed deep groove ball bearing of automobile gearbox Download PDFInfo
- Publication number
- CN209458289U CN209458289U CN201920111244.5U CN201920111244U CN209458289U CN 209458289 U CN209458289 U CN 209458289U CN 201920111244 U CN201920111244 U CN 201920111244U CN 209458289 U CN209458289 U CN 209458289U
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- outer ring
- inner ring
- groove ball
- deep groove
- automobile gearbox
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Abstract
A kind of high revolving speed deep groove ball bearing of automobile gearbox, it is related to a kind of high revolving speed deep groove ball bearing, to solve the problems, such as that the existing deep groove ball bearing its maximum speed on the basis of meeting service life is not able to satisfy the high-revolving requirement of new-energy automobile gearbox.The utility model includes inner ring, outer ring, retainer and multiple steel balls, the inner surface of outer ring and the outer surface of inner ring are machined with raceway, outer ring is nested together with inner ring, multiple steel balls are erected on retainer and are placed between outer ring and inner ring, the ditch coefficient of curvature of inner ring and outer ring is 0.52, the baffle coefficient of inner ring and outer ring is 0.4, and the surface of the raceway of inner ring and outer ring is equipped with carbonitrided case.The utility model is tested by high speed temperature rise, and functional, maximum speed is 1.3 times of deep-groove ball maximum speed on existing automobile gearbox, and bearing capacity improves 1.5 times compared with similar products.The utility model is suitable for carrying larger high-revolving occasion and uses.
Description
Technical field
The utility model relates to a kind of deep groove ball bearings, and in particular to a kind of high revolving speed deep groove ball bearing of automobile gearbox.
Background technique
The gearbox of new-energy automobile is the core component of equal importance with motor, battery, it is different from traditional automobile
Gearbox, it is desirable that the volume of gearbox is smaller, weight is lighter, transmission efficiency is higher, torque capability is stronger.In the case, make
For the bearing of speed changer core part, then the decisive guiding of new-energy automobile speed changer development is assumed responsibility for.Due to existing automobile
The highest of the deep groove ball bearing of gearbox is 10380r/min or so using revolving speed, since applying working condition is severe, it is also necessary to bear
Heavy load and biggish stress alternation, the existing deep groove ball bearing its maximum speed on the basis of meeting service life cannot expire
The sufficient high-revolving requirement of new-energy automobile gearbox.
Utility model content
Its maximum speed is not on the basis of meeting service life in order to solve the existing deep groove ball bearing for the utility model
The problem of being able to satisfy new-energy automobile gearbox high-revolving requirement, and a kind of high revolving speed deep-groove ball of automobile gearbox is provided
Bearing.
The utility model adopts the technical scheme that solve above-mentioned technical problem:
It includes inner ring, outer ring, retainer and multiple steel balls, and the inner surface of outer ring and the outer surface of inner ring are machined with rolling
Road, outer ring are nested together with inner ring, and multiple steel balls are erected on retainer and are placed between outer ring and inner ring, inner ring and outer ring
Ditch coefficient of curvature is 0.52, and the baffle coefficient of inner ring and outer ring is 0.4, and the surface of the raceway of inner ring and outer ring is equipped with carbon
Nitrogen co-penetration layer.
Further, it is high-quality to be all made of superfine of the non-metallic inclusion size no more than 15 microns for the material of inner ring and outer ring
Bearing steel.
Further, the high-quality bearing steel of superfine is GCr15A bearing steel.
Further, the bearing steel is the bearing steel of vacuum outgas.
Further, the surface of retainer is equipped with the carbonitrided case of tufftride.
The utility model has the advantages that compared with prior art
One, 0.52 is set by the ditch coefficient of curvature of inner ring and outer ring, improves the speed capability of the utility model, by inner ring
It is set as 0.4 with the rib coefficient of outer ring, improves the axial load of the two-way alternation of the utility model, the raceway of inner ring and outer ring
Surface be equipped with carbonitrided case increase raceway face retained austenite content, improve inner ring and outer ring raceway face it is resistance to
Mill property is service life to improve bearing.
Two, the utility model is tested by high speed temperature rise, functional, and maximum speed is deep on existing automobile gearbox
1.3 times of ditch ball maximum speed, bearing capacity improves 1.5 times compared with similar products.
Detailed description of the invention
Fig. 1 is the schematic diagram of the utility model.
Specific embodiment
Specific embodiment 1: illustrate present embodiment in conjunction with Fig. 1, present embodiment it include inner ring 1, outer ring 2, protect
Frame 3 and multiple steel balls 4 are held, the inner surface of outer ring 2 and the outer surface of inner ring 1 are machined with raceway, and outer ring 2 is with 1 set of inner ring one
It rises, multiple steel balls 4 are erected on retainer 4 and are placed between outer ring 2 and inner ring 1, and the ditch coefficient of curvature of inner ring 1 and outer ring 2 is equal
It is 0.52, the baffle coefficient of inner ring 1 and outer ring 2 is 0.4, and the material of inner ring 1 and outer ring 2 is all made of inclusion size and is not more than
15 microns of the high-quality bearing steel of superfine.
Specific embodiment 2: to be all made of non-metallic inclusion size little for the material of present embodiment inner ring 1 and outer ring 2
In 15 microns of the high-quality bearing steel of superfine.
Other compositions and connection relationship are same as the specific embodiment one.
Specific embodiment 3: the high-quality bearing steel of superfine described in present embodiment is GCr15A bearing steel.
Other compositions and connection relationship are same as the specific embodiment one.
Specific embodiment 4: illustrating present embodiment in conjunction with Fig. 1, bearing steel described in present embodiment is vacuum outgas
Bearing steel.
It carries out vacuum outgas and inclusion size and compares no more than the fatigue life of 15 microns of bearing steel general to hold in axis
Steel can improve 70% or more.
Other compositions and connection relationship are the same as the specific implementation mode 3.
Specific embodiment 5: illustrating present embodiment in conjunction with Fig. 1, the surface of present embodiment retainer 3 is equipped with soft
The carbonitrided case of nitridation.
The surface of retainer is equipped with the carbonitrided case of tufftride, and the hardness, wearability and resistance to punching of retainer can be improved
The ability hit.
Other compositions and connection relationship are same as the specific embodiment one.
High measurement of rotating speed is carried out to the utility model, applies the radial force of 5000N and the axial force of 3000N, test speed
For 12500r/min.After tested, it is tested bearing outer ring temperature highest to be between 82 DEG C to 92 DEG C, at detection inlet oil temperature
Between 45 DEG C to 62 DEG C.Bearing outer ring temperature is stablized, and input pressure is stablized.Testing equipment smooth running during test, shape
It is without exception that machine check is torn open before state variation.The utility model after test is dismantled, appearance flawless wear the defects of.Such as table
It is as shown in Table 2 full-scale after bearing progress temperature rise test for numerical value full-scale before bearing progress temperature rise test shown in one
Numerical value, the comparison through table one and the front and back of table two, the full-scale of bearing be held essentially constant, and measurement complies with standard.This is practical new
Type can work normally in revolving speed for 12500r/min, be 1.3 times of existing similar bearing maximum speed, and dynamic load rating improves
15% or more.
Table one
Unit: micron
| Serial number | Detection project | Standard value | Bearing one | Bearing two |
| 1 | △dmp | 0~-8 | -4 | -4 |
| 2 | Vdsp | ≤6 | 2 | 1 |
| 3 | Vdmp | ≤4 | 1 | 1 |
| 4 | △Dmp | 0~-9 | -4 | -4 |
| 5 | VDsp | ≤7 | 2 | 3 |
| 6 | VDmp | ≤5 | 1 | 2 |
| 7 | Kia | ≤5 | 2 | 4 |
| 8 | Kea | ≤8 | 3 | 4 |
| 9 | Gr | 15~33 | 20 | 21 |
| 10 | △Bs | 0~-60 | -45 | -51 |
| 11 | VBs | ≤5 | 3 | 3 |
| 12 | △Cs | 0~-60 | -48 | -46 |
| 13 | VCs | ≤6 | 2 | 3 |
| 14 | It vibrates (noise) | ≤42dB | 38dB | 37dB |
Table two
Unit: micron
Wherein △ dmp is internal diameter tolerance, and Vdsp is sagittal plane bore diameter variation, and Vdmp is mean inside diameter variation
Amount, △ Dmp are the deviation of mean inside diameter, and VDsp is single sagittal plane outside diameter variation, and VDmp is mean outside diameter variation,
Kia is runout tolerance, and Kea is complete bearing outer ring circular runout, and Gr is radial internal clearance, and △ Bs is that inner ring single-width is inclined
Difference, VBs are inner race width variation, and △ Cs is outer ring single-width deviation, and VCs is outer ring width variation.
Claims (5)
1. a kind of high revolving speed deep groove ball bearing of automobile gearbox, it includes inner ring (1), outer ring (2), retainer (3) and multiple steel
Ball (4), it is characterised in that: the inner surface of outer ring (2) and the outer surface of inner ring (1) are machined with raceway, outer ring (2) and inner ring
(1) be nested together, multiple steel balls (4) are erected on retainer (3) and are placed between outer ring (2) and inner ring (1), inner ring (1) and
The ditch coefficient of curvature of outer ring (2) is 0.52, and the baffle coefficient of inner ring (1) and outer ring (2) is 0.4, inner ring (1) and outer ring
(2) surface of raceway is equipped with carbonitrided case.
2. the high revolving speed deep groove ball bearing of a kind of automobile gearbox according to claim 1, it is characterised in that: inner ring (1) and
The material of outer ring (2) is all made of superfine high-quality bearing steel of the non-metallic inclusion size less than or equal to 15 microns.
3. the high revolving speed deep groove ball bearing of a kind of automobile gearbox according to claim 2, it is characterised in that: the superfine is excellent
Matter bearing steel is GCr15A bearing steel.
4. the high revolving speed deep groove ball bearing of a kind of automobile gearbox according to claim 3, it is characterised in that: the bearing steel
For the bearing steel of vacuum outgas.
5. the high revolving speed deep groove ball bearing of a kind of automobile gearbox according to claim 1, it is characterised in that: retainer (3)
Surface be equipped with tufftride carbonitrided case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920111244.5U CN209458289U (en) | 2019-01-21 | 2019-01-21 | A kind of high revolving speed deep groove ball bearing of automobile gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920111244.5U CN209458289U (en) | 2019-01-21 | 2019-01-21 | A kind of high revolving speed deep groove ball bearing of automobile gearbox |
Publications (1)
| Publication Number | Publication Date |
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| CN209458289U true CN209458289U (en) | 2019-10-01 |
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| CN201920111244.5U Active CN209458289U (en) | 2019-01-21 | 2019-01-21 | A kind of high revolving speed deep groove ball bearing of automobile gearbox |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538627A (en) * | 2019-01-21 | 2019-03-29 | 哈尔滨轴承集团公司 | A kind of high revolving speed deep groove ball bearing of automobile gearbox |
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2019
- 2019-01-21 CN CN201920111244.5U patent/CN209458289U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538627A (en) * | 2019-01-21 | 2019-03-29 | 哈尔滨轴承集团公司 | A kind of high revolving speed deep groove ball bearing of automobile gearbox |
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