CN114135578A - Long-life, super-huge double-row self-aligning roller bearing who shocks resistance - Google Patents
Long-life, super-huge double-row self-aligning roller bearing who shocks resistance Download PDFInfo
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- CN114135578A CN114135578A CN202111471729.3A CN202111471729A CN114135578A CN 114135578 A CN114135578 A CN 114135578A CN 202111471729 A CN202111471729 A CN 202111471729A CN 114135578 A CN114135578 A CN 114135578A
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- ring
- inner ring
- outer ring
- diameter
- bearing
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- 230000035939 shock Effects 0.000 title claims abstract description 8
- 238000010791 quenching Methods 0.000 claims abstract description 23
- 230000000171 quenching effect Effects 0.000 claims abstract description 23
- 238000005096 rolling process Methods 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- 229910001339 C alloy Inorganic materials 0.000 claims abstract description 7
- 230000006698 induction Effects 0.000 description 15
- 239000000463 material Substances 0.000 description 8
- 238000001816 cooling Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
- F16C23/06—Ball or roller bearings
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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
- F16C33/46—Cages for rollers or needles
- F16C33/48—Cages for rollers or needles for multiple rows of rollers or needles
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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
- F16C33/583—Details of specific parts of races
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a long-life and shock-resistant super-large double-row self-aligning roller bearing, which comprises a bearing inner ring and a bearing outer ring which are made of high-quality medium carbon alloy steel 42CrNiMo, wherein a rolling body and a retainer for supporting the rolling body are arranged between the inner ring and the outer ring, and the outer diameter raceway surface of the inner ring, the inner diameter raceway surface of the outer ring, the inner diameter of the inner ring and the outer diameter of the outer ring are all subjected to non-soft-band medium-frequency quenching treatment.
Description
Technical Field
The invention belongs to the technical field of design of an oversize double-row self-aligning roller bearing, and particularly relates to an oversize double-row self-aligning roller bearing with long service life and impact resistance.
Background
The self-aligning roller bearing has double-row rollers, 1 common spherical raceway on the outer ring, and 2 raceways on the inner ring, which are inclined at an angle relative to the bearing axis. The ingenious structure enables the bearing box to have self-aligning performance, so that the bearing box is not easily affected by the angle between the shaft and the bearing box seat to the error or the bending of the shaft, and is suitable for occasions with the angle error caused by installation error or shaft deflection. The bearing can bear radial load and axial load with bidirectional action.
At present, large double-row self-aligning roller bearings (such as wind power bearings) are mostly made of GCr155SiMn bearing steel, but when the diameter of the bearing is larger than 1000mm or the wall thickness of the inner ring and the outer ring of the bearing is larger than 150mm, due to the thick wall of a part, when the inner ring and the outer ring are quenched, the cooling speed of the core part is slow, and the self-tempering phenomenon can be generated, so that the surface hardness of the raceway cannot reach HRC58 or even is lower than HRC53, the strength, the wear resistance and the impact resistance of the bearing raceway cannot be ensured, and the service life of the bearing is seriously influenced.
Disclosure of Invention
In order to solve the technical problems, the invention provides a long-life and shock-resistant super-large double-row self-aligning roller bearing, the material of the inner ring and the outer ring of the double-row self-aligning roller bearing made of the existing material is designed into high-quality medium carbon alloy steel 42CrNiMo, the roller paths of the inner ring and the outer ring are subjected to medium frequency quenching, the outer diameter surface of the outer ring and the inner diameter surface of the inner ring are also subjected to medium frequency quenching, the strength, the wear resistance and the shock resistance of the bearing and the roller paths of the bearing are favorably improved, and the service life of the bearing is favorably prolonged.
The technical scheme adopted by the invention is as follows: the super-huge double-row self-aligning roller bearing with long service life and impact resistance comprises a bearing inner ring and a bearing outer ring which are made of high-quality medium carbon alloy steel 42CrNiMo, wherein a rolling body and a retainer for supporting the rolling body are arranged between the inner ring and the outer ring, and the outer diameter raceway surface of the inner ring, the inner diameter raceway surface of the outer ring, the inner diameter of the inner ring and the outer diameter of the outer ring are subjected to non-soft-belt medium frequency quenching treatment.
The surface hardness of the outer diameter rolling surface of the inner ring and the inner diameter rolling surface of the outer ring after quenching exceeds HRC 58.
The depth of the hardened layer after the outer diameter raceway surface of the inner ring and the inner diameter raceway surface of the outer ring are quenched exceeds 8 mm.
The surface hardness of the inner diameter of the inner ring and the outer diameter of the outer ring after quenching exceeds HRC 55.
The depth of the hardened layer after the inner diameter of the inner ring and the outer diameter of the outer ring are quenched is more than 5 mm.
Wherein, the purpose that the material of bearing inner race and outer lane adopted high-quality well carbon alloy steel 42CrNiMo lies in: compared with the bearing steel made of the conventional GCr155SiMn material, the alloy steel made of the 42CrNiMo material has higher toughness, elasticity and heat resistance and good hardenability, so that the hardness of the surfaces of the inner ring raceway and the outer ring raceway can reach more than HRC58 when the intermediate frequency quenching is carried out, the service requirement of a large double-row self-aligning roller bearing is met, and the service life of the bearing is prolonged.
Wherein, the external diameter raceway surface of inner circle, the internal diameter raceway surface of outer lane, the internal diameter of inner circle and the external diameter of outer lane all adopt no soft area intermediate frequency quenching treatment, the aim at that sets up like this: the two raceway surfaces are subjected to medium frequency quenching because the rolling bodies and the raceway surfaces are in mutual contact when the two raceway surfaces work, and the medium frequency quenching treatment can meet the normal use requirement in order to prolong the service life of the raceway; the inner diameter of the inner ring and the outer diameter surface of the outer ring are subjected to intermediate frequency quenching, so that the problem that the outer diameter surface is abraded due to creeping of the outer ring when the bearing works is solved, the deformation of the inner diameter of the inner ring is prevented from occurring in the assembling process of the bearing, and the damage to the inner diameter surface of the inner ring and the outer diameter surface of the outer ring is prevented.
The invention has the beneficial effects that:
the invention designs the materials of the inner ring and the outer ring of the double-row self-aligning roller bearing made of the existing materials into high-quality medium carbon alloy steel 42CrNiMo, and not only carries out medium frequency quenching on the raceway positions of the inner ring and the outer ring, but also carries out medium frequency quenching on the outer diameter surface of the outer ring and the inner diameter surface of the inner ring, thereby being beneficial to improving the strength, the wear resistance and the shock resistance of the bearing and the bearing raceway and prolonging the service life of the bearing.
Drawings
FIG. 1 is a structural diagram of a double-row self-aligning roller bearing according to the present invention;
FIG. 2 is a schematic diagram of the non-soft zone medium frequency quenching of the present invention.
The labels in the figure are: 1. an inner ring; 2. an outer ring; 3. a rolling body; 4. a holder; 5. an induction heater; 6. and a cooling device.
Detailed Description
The following detailed description of embodiments of the invention is provided in connection with the accompanying drawings.
As shown in the figure, a super-huge double-row self-aligning roller bearing with long service life and impact resistance, including bearing inner ring 1 and outer lane 2 that the material is high-quality medium carbon alloy steel 42CrNiMo, install rolling element 3 and be used for carrying out the holder 4 that supports rolling element 3 between inner ring 1 and the outer lane 2, this double-row self-aligning roller bearing's specific structure belongs to the conventional design among the prior art, its theory of operation and other structures do not do too much redundancy here, no soft area intermediate frequency quenching is all adopted to the external diameter raceway surface of inner ring 1, the internal diameter raceway surface of outer lane 2, the internal diameter of inner ring 1 and the external diameter of outer lane 2.
The surface hardness of the quenched outer diameter raceway surface of the inner ring 1 and the surface hardness of the quenched inner diameter raceway surface of the outer ring 2 exceed HRC58, the depth of a hardened layer of the quenched outer diameter raceway surface of the inner ring 1 and the quenched inner diameter raceway surface of the outer ring 2 exceed 8mm, compared with the existing GCr155SiMn bearing steel, the requirement that the surface hardness of the raceway exceeds HRC58 can be realized by adopting 42CrNiMo alloy steel, and the depth of the hardened layer exceeds 8mm, so that the inner ring 2 and the outer ring 2 of the bearing have better wear resistance, the strength and the shock resistance of the bearing are improved, and the service life of the bearing is prolonged on the whole.
The surface hardness of the quenched inner diameter of the inner ring 1 and the outer diameter of the outer ring 2 exceeds HRC55, and the depth of the quenched layer of the quenched inner diameter of the inner ring 1 and the quenched outer diameter of the outer ring 2 is greater than 5mm, so that the hardness values of the inner diameter surface of the inner ring 1 and the outer diameter surface of the outer ring 2 can be enhanced, the abrasion of the outer diameter surface caused by the creeping of the outer ring 2 can be prevented when the bearing works, the deformation of the inner diameter of the inner ring 1 in the assembling process of the bearing is prevented, and the problem that the inner diameter surface of the inner ring 1 and the outer diameter surface of the outer ring 2 are damaged is prevented.
Specifically, the outer diameter raceway surface of the inner ring 1, the inner diameter raceway surface of the outer ring 2, the inner diameter of the inner ring 1, and the outer diameter surface of the outer ring 2 are all subjected to soft-belt-free intermediate frequency quenching, and here, taking the outer diameter raceway surface of the inner ring 1 as an example, the soft-belt-free intermediate frequency quenching method is as follows:
step one, positioning a workpiece: horizontally mounting the inner ring 1 on a working platform of a machine tool, and fixing the inner ring;
step two, determining the position of the circle center of the workpiece: a distance measuring sensor is arranged on a machine tool main shaft, the distance measuring sensor is used for measuring the distance of different positions of the outer diameter surface or the inner diameter surface of the inner diameter, the center coordinate of a workpiece is determined, coordinate values are recorded and stored in a machine tool control system, and the starting point position a and the end point position b of the induction heater 5 and the movement radius of the induction heater 5 are determined according to the coordinate values;
step three, heating and cooling the workpiece: in the initial position a, two induction heaters 5 installed on a machine tool moving device are simultaneously positioned at the initial zero point, the distance between the two induction heaters 5 is 2mm, the two induction heaters 5 are simultaneously electrified during quenching, the two induction heaters 5 respectively move to the terminal point b in opposite directions from the initial position a at the same speed, the moving tracks of the two induction heaters 5 are circular arcs in the moving process, the middle points of the circular arcs are concentric with the circle center of a workpiece, and when the terminal point b is reached, the two induction heaters 5 stop moving and the distance between the two induction heaters 5 is 2 mm; in the process that the induction heater 5 heats the outer diameter raceway of the inner ring 1, two cooling devices 6 (cooling media are water, aqueous solution or mineral oil) arranged on a machine tool simultaneously cool the heated raceway surface along the same movement track as the two induction heaters 5, and the time interval between heating and cooling of each point on the raceway is equal; and after the two groups of induction heaters 5 heat the end position b and withdraw from the surface of the raceway, the induction heaters 5 are powered off to stop heating, and after the two cooling devices 6 cool the end position b at the end position b, the induction heaters withdraw from the surface of the raceway to finish the whole quenching process of the raceway, thereby realizing the purpose of medium-frequency quenching without soft bands.
Claims (5)
1. The utility model provides a super-huge double-row self-aligning roller bearing of long-life, shock resistance which characterized in that: the bearing comprises an inner ring and an outer ring which are made of high-quality medium carbon alloy steel 42CrNiMo, a rolling body and a retainer for supporting the rolling body are arranged between the inner ring and the outer ring, and the outer diameter raceway surface of the inner ring, the inner diameter raceway surface of the outer ring, the inner diameter of the inner ring and the outer diameter of the outer ring are subjected to non-soft-belt medium frequency quenching treatment.
2. The long-life and impact-resistant extra-large double-row self-aligning roller bearing of claim 1, wherein: the surface hardness of the outer diameter rolling surface of the inner ring and the inner diameter rolling surface of the outer ring after quenching exceeds HRC 58.
3. The long-life and impact-resistant extra-large double-row self-aligning roller bearing of claim 1, wherein: the depth of the hardened layer after the outer diameter raceway surface of the inner ring and the inner diameter raceway surface of the outer ring are quenched exceeds 8 mm.
4. The long-life and impact-resistant extra-large double-row self-aligning roller bearing of claim 1, wherein: the surface hardness of the inner diameter of the inner ring and the outer diameter of the outer ring after quenching exceeds HRC 55.
5. The long-life and impact-resistant extra-large double-row self-aligning roller bearing of claim 1, wherein: the depth of the hardened layer after the inner diameter of the inner ring and the outer diameter of the outer ring are quenched is more than 5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111471729.3A CN114135578A (en) | 2021-12-06 | 2021-12-06 | Long-life, super-huge double-row self-aligning roller bearing who shocks resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111471729.3A CN114135578A (en) | 2021-12-06 | 2021-12-06 | Long-life, super-huge double-row self-aligning roller bearing who shocks resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114135578A true CN114135578A (en) | 2022-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111471729.3A Withdrawn CN114135578A (en) | 2021-12-06 | 2021-12-06 | Long-life, super-huge double-row self-aligning roller bearing who shocks resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114135578A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005273698A (en) * | 2004-03-23 | 2005-10-06 | Nsk Ltd | Self-aligning roller bearing |
| CN1823231A (en) * | 2003-11-14 | 2006-08-23 | 日本精工株式会社 | Self-aligning roller bearing |
| CN108223565A (en) * | 2018-02-05 | 2018-06-29 | 洛阳新强联回转支承股份有限公司 | It is a kind of without soft band three-row cylinder roller pivoting support bearing |
| CN108223566A (en) * | 2018-02-05 | 2018-06-29 | 洛阳新强联回转支承股份有限公司 | It is a kind of without the big cone angle double-row conical pivoting support of soft band |
| CN111720434A (en) * | 2020-07-22 | 2020-09-29 | 山东省宇捷轴承制造有限公司 | Self-aligning roller bearing suitable for axial and radial unbalance loading working conditions and heat treatment process |
| CN111911528A (en) * | 2020-07-28 | 2020-11-10 | 山东华工轴承有限公司 | Vibrating screen self-aligning roller bearing |
| CN112739922A (en) * | 2018-09-26 | 2021-04-30 | Ntn株式会社 | Rolling bearing and main shaft support device for wind power generation |
-
2021
- 2021-12-06 CN CN202111471729.3A patent/CN114135578A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1823231A (en) * | 2003-11-14 | 2006-08-23 | 日本精工株式会社 | Self-aligning roller bearing |
| JP2005273698A (en) * | 2004-03-23 | 2005-10-06 | Nsk Ltd | Self-aligning roller bearing |
| CN108223565A (en) * | 2018-02-05 | 2018-06-29 | 洛阳新强联回转支承股份有限公司 | It is a kind of without soft band three-row cylinder roller pivoting support bearing |
| CN108223566A (en) * | 2018-02-05 | 2018-06-29 | 洛阳新强联回转支承股份有限公司 | It is a kind of without the big cone angle double-row conical pivoting support of soft band |
| CN112739922A (en) * | 2018-09-26 | 2021-04-30 | Ntn株式会社 | Rolling bearing and main shaft support device for wind power generation |
| CN111720434A (en) * | 2020-07-22 | 2020-09-29 | 山东省宇捷轴承制造有限公司 | Self-aligning roller bearing suitable for axial and radial unbalance loading working conditions and heat treatment process |
| CN111911528A (en) * | 2020-07-28 | 2020-11-10 | 山东华工轴承有限公司 | Vibrating screen self-aligning roller bearing |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20220304 |
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| WW01 | Invention patent application withdrawn after publication |