CN113217534A - Solid needle roller bearing and processing technology of bearing outer ring - Google Patents
Solid needle roller bearing and processing technology of bearing outer ring Download PDFInfo
- Publication number
- CN113217534A CN113217534A CN202110529878.4A CN202110529878A CN113217534A CN 113217534 A CN113217534 A CN 113217534A CN 202110529878 A CN202110529878 A CN 202110529878A CN 113217534 A CN113217534 A CN 113217534A
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- China
- Prior art keywords
- bearing
- outer ring
- needle roller
- diameter surface
- bearing outer
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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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/44—Needle bearings
- F16C19/46—Needle bearings with one row or needles
- F16C19/463—Needle bearings with one row or needles consisting of needle rollers held in a cage, i.e. subunit without race rings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/003—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass 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
- F16C33/34—Rollers; 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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- 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
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
Abstract
The invention provides a solid needle roller bearing and a processing technology of a bearing outer ring, and the solid needle roller bearing comprises the bearing outer ring, a needle roller, a retainer and a sealing assembly, wherein a guide structure is arranged at one side end part of the outer diameter surface of the bearing outer ring, a sealing groove is arranged at the other side end part of the inner diameter surface of the bearing outer ring, which is far away from the guide structure, and the sealing assembly is in interference fit with the sealing groove. Two ends of the inner diameter surface of the bearing outer ring are provided with flanges inwards, a raceway is processed on the inner diameter surface between the flanges at the two ends, the opposite side surfaces of the flanges are arranged in a back-to-back inclined mode, and the inclined angle is 10 'to 30'. The rolling needles are round-head rolling needles and are partially embedded between the flanges at two ends. The solid needle roller bearing and the processing technology are optimized, the axial and radial bearing capacity of the bearing can be improved, and the solid needle roller bearing can be applied to a working environment with high load and axial force caused by certain unbalance loading.
Description
Technical Field
The invention relates to the technical field of bearings, in particular to a solid needle roller bearing and a processing technology of a bearing outer ring.
Background
The dynamic disc bearing of the new energy electric compressor is a deep groove ball bearing which is commonly used in the industry at present, but the requirement of the environment on the high rotating speed and the high bearing performance of the bearing is very high, and the compressor has a certain eccentric amount during working, so that the eccentric force of the bearing under the high-speed condition is very large, and the requirement of the eccentric force on the strength of a retainer is more strict. At present, the problem that the cage is broken due to the influence of high-speed unbalance loading force of the iron cage adopting the deep groove ball bearing is found in the industry, and the problem can not be thoroughly solved by domestic manufacturers and foreign bearing manufacturers, so that a new scheme is required to meet the use requirement of the market.
Based on this, the present application is proposed.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a solid needle bearing and an outer ring processing technology, which are used for a new energy electric compressor-driven disc, improve the bearing capacity of the bearing and enable the bearing to adapt to the use of high radial force and axial force environment caused by unbalance loading.
In order to achieve the purpose, the invention provides a solid needle roller bearing which comprises a bearing outer ring, a needle roller, a retainer and a sealing assembly, wherein a guide structure is arranged at one side end part of the outer diameter surface of the bearing outer ring, and the guide structure is arranged in a concave manner relative to the outer diameter surface; two ends of the inner diameter surface of the bearing outer ring are provided with flanges inwards, a raceway is processed on the inner diameter surface between the flanges at the two ends, the opposite side surfaces of the flanges are arranged in a back-to-back inclined mode, and the inclined angle is 10 'to 30';
the rolling needles are round-head rolling needles which are partially embedded between the flanges at the two ends,
the end part of the inner diameter surface of the bearing outer ring, which is far away from the other side of the guide structure, is provided with a sealing groove, and the sealing assembly is in interference fit with the sealing groove.
In above-mentioned structure, improve bearing capacity of needle bearing's axial through design button head kingpin and flange contact: in the solid needle roller bearing, the needle rollers are round-head needle rollers, so that the contact between the round-head needle rollers and the flanges is point contact, the sliding friction heating of the end surfaces of the rollers and the flanges can be effectively reduced, and the axial bearing capacity is improved. Meanwhile, the flanges have a certain inclination angle, so that the geometric shape of a conventional contact surface is changed, the contact lubrication condition can be improved, the axial bearing capacity can be further and obviously improved, the allowable skew angle of the roller pins can be improved by the structure, and the radial bearing capacity of the bearing is improved.
The bearing is sealed on one side, and the end without sealing is mainly closed by a shell at a client.
The invention further provides the following: the guide structure comprises a flat ring surface and an inclined ring surface, wherein the diameter of the edge of the end part of the outer diameter surface is smaller than that of the outer diameter surface, and the inclined ring surface is connected with the flat ring surface. The guide structure is simple, not only is convenient to process and can play a good guide effect, but also avoids the adverse effect of the guide structure on the stability of the structure of the flange which is arranged on the same side of the guide structure.
In order to ensure the guiding effect and facilitate the assembly and use of the bearing, the invention is further provided with the following components: the inclined ring surface has an inclination angle of not less than 150 ° with respect to the flat ring surface.
The invention further provides the following: the sealing assembly comprises a framework and a sealing rubber material coated on the framework, wherein the sealing rubber material is made of high-temperature-resistant rubber and can be used in a working environment with the temperature of more than 150 ℃.
Preferably, the seal assembly is made of FKM + SPCC.
The invention further provides the following: the retainer is a high-temperature-resistant nylon retainer.
The high-temperature resistant nylon retainer is nylon engineering plastic which can be used at the temperature of more than 150 ℃ for a long time. PA46, PA6T, PA9T, and the like.
The invention further provides the following: the high-temperature-resistant nylon retainer is made of PA46+30% GF material.
Through the selection to the high temperature resistant material of seal assembly and nylon holder, its high temperature resistance that can promote the bearing greatly to the use of adaptation high temperature environment, extension bearing life under high temperature environment and keep its performance, thereby satisfy actual user demand.
The invention further provides the following: the side face opposite to the flange is formed by grinding.
The invention also aims to provide a processing technology of the bearing outer ring, which comprises the following steps,
s1, forming a material pipe fitting to be processed into a bearing outer ring blank;
s2, turning a guide structure, a seal groove, a raceway and a flange on the outer circumference of the bearing outer ring blank;
s3, carrying out integral quenching and high-temperature tempering on the basis of turning the bearing outer ring blank;
s4, grinding the end face of the tempered bearing outer ring blank, and grinding the raceway;
s5, grinding the outer ring of the bearing after the raceway grinding in the circumferential direction of the outer circle, designing and adjusting a grinding wheel according to the angle of the flange of the outer ring of the bearing, and grinding the flange, so that a required angle is formed;
and S6, finally, performing raceway superfinishing on the bearing outer ring.
The invention has the following beneficial effects:
firstly, the solid needle roller bearing is structurally optimized, and after the optimized design, the product structure can bear large radial force and can improve the axial bearing capacity of the bearing, so that the solid needle roller bearing can be applied to a working environment with high load and axial force caused by certain unbalance loading. Simultaneously, through design guide structure on the outer lane, leading-in, gomphosis and chucking when can make things convenient for the customer to install bearing to the driving disk, the assembly of very big convenient bearing.
In the invention, the retainer and the sealing ring are made of high-temperature-resistant materials, and the high-temperature-resistant performance of the bearing is greatly enhanced by combining with the heat treatment optimization of the outer ring of the ferrule, so that the solid needle roller bearing can be used in a severe environment with high rotating speed and high temperature, and the service life of the bearing is prolonged.
And thirdly, the processing procedure of the solid needle roller bearing is simple in steps, convenient to operate and suitable for automatic and large-scale production.
The structure and the layout of the solid needle roller bearing are optimized, the bearing performance can be improved, the processing, the production and the use are convenient, and the practical use value is realized.
Drawings
FIG. 1 is a general schematic diagram of an embodiment of the present invention.
Fig. 2 is a schematic diagram of an outer ring structure according to an embodiment of the present invention.
Fig. 3 is a partially enlarged view of fig. 2.
Reference numerals: 1. a bearing outer race; 2. rolling needles; 3. a holder; 4. a seal assembly; 11. a guide structure; 12. a first flange; 13. a second flange; 14. a sealing groove; 15. a raceway; 11-1, a flat ring surface; 11-2, inclined ring surface; 11-3, a first arc transition surface; 11-4, a second arc transition surface; 12-1, a first inclined side surface; 12-2, chamfering one; 13-1 and a second inclined side surface; 13-2 and chamfering II.
Detailed Description
In addition, in order to further ensure that the guide structure has smooth action and no collision, the left edge of the flat ring surface 11-1 is provided with a first arc transition surface 11-3, the right side of the inclined ring surface 11-2 is connected with the outer diameter surface, and the joint is provided with a second arc transition surface 11-4. Through the guide structure of indent earlier, reducing design again, when the movable disk pressure equipment with the solid kingpin 2 bearing with the compressor, can utilize above-mentioned cooperation, make the solid kingpin 2 bearing pack into the casing of movable disk fast, conveniently, realize tight fit fixed and effectual sealed.
Correspondingly, the other side of the inner diameter surface of the bearing outer ring 1, which is far away from the guide structure, namely the end part of the right end of the inner diameter surface is provided with a sealing groove 14, and a certain distance is reserved between the sealing groove 14 and the right end surface of the bearing outer ring 1, so that the end surface of the sealing assembly 4 assembled in the sealing groove 14 is wrapped in the sealing groove, the sealing assembly 4 is protected from being influenced by other structures or components as much as possible in the use process, and the sealing function can be normally exerted.
With continued reference to fig. 1, the two ends of the inner diameter surface of the bearing outer ring 1 are provided with a first flange 12 and a second flange 13 inwards, the first flange 12 and the guide structure are arranged opposite to each other in the radial direction, a raceway 15 is processed on the inner diameter surface between the first flange 12 and the second flange 13, and a raceway 15 groove for assembling the needle roller 2 is formed between the first flange 12 and the second flange 13. The roller needles 2 are round-head roller needles 2 which are partially embedded between the first flange 12 and the second flange 13 through the retainer 3, meanwhile, the side face of the first flange 12 opposite to the second flange 13 is obliquely arranged in a back direction, the inclination angle is 10 'to 30', in the figure 1, the side face is shown as an inclined side face I12-1 and an inclined side face II 13-1, and the inclination angle of the inclined side face I12-1 and the inclined side face II 13-1 is shown as 3 degrees. The round-head needle roller 2 is matched with the first flange 12 and the first inclined side 12-1 and the second inclined side 13-1 of the second flange 13 respectively, so that the axial bearing capacity of the needle roller 2 bearing is greatly improved.
And the first inclined side face 12-1 and the second inclined side face 13-1 are formed by grinding, so that the sliding friction between the needle roller 2 and the side wall of the flange can be further reduced, and the axial bearing capacity of the bearing is improved. Of course, compared with lathing, the grinding process is also more convenient to control the inclination angles of the first inclined side surface 12-1 and the second inclined side surface 13-1, so that the inclination angles of the first rib 12 and the second rib 13 are consistent with the set inclination angles, and the needle roller 2 is kept to stably run in the first rib.
In this embodiment, the sealing assembly 4 includes a frame and a sealing compound coated on the frame, and the retainer 3 is a high temperature resistant nylon retainer 3. The seal assembly 4 is made of FKM + SPCC. The high-temperature-resistant nylon retainer 3 is made of PA46+30% GF material. Therefore, the solid needle roller 2 bearing can be fully suitable for the severe operating environment at the movable disc of the compressor in the new energy automobile.
In addition, in the embodiment, the inner ends of the first inclined side surface 12-1 and the second inclined side surface 13-1 are respectively provided with the first chamfer 12-2 and the second chamfer 13-2, so that the areas of the first inclined side surface 12-1 and the second inclined side surface 13-1 are reduced, and the needle roller 2 is more convenient to assemble.
s1, forming a material pipe fitting to be processed into a blank of the bearing outer ring 1;
s2, turning a guide structure, a seal groove 14, a raceway 15 and a flange in the circumferential direction of the outer circle of the bearing outer ring 1 blank;
s3, carrying out integral quenching and high-temperature tempering on the basis of turning the bearing outer ring 1 blank;
s4, grinding the end face of the tempered bearing outer ring 1 blank, and grinding the raceway 15;
s5, grinding the bearing outer ring 1 of the grinded raceway 15 to the outer circle of the bearing in the circumferential direction, designing and adjusting a grinding wheel according to the angle of the flange of the bearing outer ring 1, and grinding the flange to form a required angle;
and S6, finally performing superfinishing on the raceway 15 of the bearing outer ring 1.
The processing technology adopted by the embodiment has the following effects: firstly, the outer circle circumference of the bearing outer ring is turned to form a guide structure, and then the sealing groove, the raceway and the flange on the inner circle circumference are turned in sequence, so that a processing sequence gradually contracting from the outer periphery to the inner periphery and from the outer side to the inner side of the end part is formed, and the bearing outer ring is suitable for automatic processing of equipment. The second, the processing mode of outside processing earlier, inside processing again can be earlier with the primary fixation of external dimensions as the reference of inside processing, is favorable to controlling the primary machining error of bearing inner race within 0.1mm, provides the basis for the machining precision of follow-up processing step. In the embodiment, when fine machining is performed after quenching, the direction of rough machining is opposite to that of fine machining, the end face and the raceway in the inner circumferential direction are firstly processed, and then the flange and the outer circumferential direction are processed, so that the machining precision can be further improved, and the use requirement can be met.
In conclusion, the invention provides the solid needle roller 2 bearing and the processing technology of the bearing outer ring 1 thereof, which are used for replacing a deep groove ball bearing to be used in a new energy automobile compressor-driven disc, and the product structure not only can bear large radial force, but also can improve the axial bearing capacity of the bearing. Meanwhile, after the selection of the retainer 3, the material of the sealing ring and the heat treatment optimization of the outer ring, the bearing can be used in a severe environment with high rotating speed, high temperature, high load and axial force caused by certain unbalance load. The bearing product is convenient to process and install by customers.
Claims (7)
1. The utility model provides a solid bearing for needles, includes bearing inner race, kingpin, holder and seal assembly, its characterized in that: a guide structure is arranged at one side end part of the outer diameter surface of the bearing outer ring and is arranged inwards relative to the outer diameter surface; two ends of the inner diameter surface of the bearing outer ring are provided with flanges inwards, a raceway is processed on the inner diameter surface between the flanges at the two ends, the opposite side surfaces of the flanges are arranged in a back-to-back inclined mode, and the inclined angle is 10 'to 30';
the rolling needle is a round-head rolling needle which is partially embedded between the flanges at two ends, a sealing groove is formed in the end part, far away from the other side of the guide structure, of the inner diameter surface of the bearing outer ring, and the sealing assembly is in interference fit with the sealing groove.
2. The solid needle roller bearing of claim 1, wherein: the guide structure comprises a flat ring surface and an inclined ring surface, wherein the diameter of the edge of the end part of the outer diameter surface is smaller than that of the outer diameter surface, and the inclined ring surface is connected with the flat ring surface.
3. The solid needle roller bearing of claim 2, wherein: the inclined ring surface has an inclination angle of not less than 150 ° with respect to the flat ring surface.
4. The solid needle roller bearing of claim 1, wherein: the sealing assembly comprises a framework and sealing rubber coated on the framework; and/or the retainer is a high-temperature-resistant nylon retainer.
5. The solid needle roller bearing of claim 4, wherein: the sealing component is made of FKM + SPCC; and/or the high-temperature-resistant nylon retainer is made of PA46+30% GF material.
6. The solid needle roller bearing of claim 1, wherein: the side face opposite to the flange is formed by grinding.
7. A processing technology of a bearing outer ring is characterized in that: the method comprises the following steps:
s1, forming a material pipe fitting to be processed into a bearing outer ring blank;
s2, turning a guide structure, a seal groove, a raceway and a flange on the outer circumference of the bearing outer ring blank;
s3, carrying out integral quenching and high-temperature tempering on the basis of turning the bearing outer ring blank;
s4, grinding the end face of the tempered bearing outer ring blank, and grinding the raceway;
s5, grinding the outer ring of the bearing after the raceway grinding in the circumferential direction of the outer circle, designing and adjusting a grinding wheel according to the inclination angle of the flange of the outer ring of the bearing, and grinding the flange, so that a required angle is formed;
and S6, finally, performing raceway superfinishing on the bearing outer ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110529878.4A CN113217534A (en) | 2021-05-14 | 2021-05-14 | Solid needle roller bearing and processing technology of bearing outer ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110529878.4A CN113217534A (en) | 2021-05-14 | 2021-05-14 | Solid needle roller bearing and processing technology of bearing outer ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113217534A true CN113217534A (en) | 2021-08-06 |
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ID=77092020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110529878.4A Pending CN113217534A (en) | 2021-05-14 | 2021-05-14 | Solid needle roller bearing and processing technology of bearing outer ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113217534A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101371055A (en) * | 2005-12-21 | 2009-02-18 | 谢夫勒两合公司 | Rolling bearing and method for the production thereof |
| CN202520774U (en) * | 2012-04-28 | 2012-11-07 | 江苏南方轴承股份有限公司 | Solid outer ring type eccentric bearing |
| CN203272436U (en) * | 2013-05-16 | 2013-11-06 | 江苏万达特种轴承有限公司 | Tilting-installation roller bearing |
| CN205677984U (en) * | 2016-06-08 | 2016-11-09 | 嘉兴福可吉精密机械有限公司 | It is easy to the hub bearing of assembling |
| CN206268252U (en) * | 2016-12-13 | 2017-06-20 | 人本集团有限公司 | Compact high capacity sealed bearings |
| CN207454564U (en) * | 2017-11-14 | 2018-06-05 | 人本集团有限公司 | Automobile camshaft is with needle bearing and grinding bearing assembly |
| CN108907622A (en) * | 2018-07-30 | 2018-11-30 | 江苏亚奥精密机械有限公司 | A kind of bearing processing method |
| CN109340253A (en) * | 2018-11-30 | 2019-02-15 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | The flanged (FLGD) double containment abnormity of outer diameter completely fills needle bearing |
| CN110064901A (en) * | 2019-05-24 | 2019-07-30 | 新昌县新翔宇轴承有限公司 | A kind of bearing processing |
| CN213064338U (en) * | 2020-06-11 | 2021-04-27 | 浙江科莱特轴承股份有限公司 | Bearing with labyrinth seal structure |
-
2021
- 2021-05-14 CN CN202110529878.4A patent/CN113217534A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101371055A (en) * | 2005-12-21 | 2009-02-18 | 谢夫勒两合公司 | Rolling bearing and method for the production thereof |
| CN202520774U (en) * | 2012-04-28 | 2012-11-07 | 江苏南方轴承股份有限公司 | Solid outer ring type eccentric bearing |
| CN203272436U (en) * | 2013-05-16 | 2013-11-06 | 江苏万达特种轴承有限公司 | Tilting-installation roller bearing |
| CN205677984U (en) * | 2016-06-08 | 2016-11-09 | 嘉兴福可吉精密机械有限公司 | It is easy to the hub bearing of assembling |
| CN206268252U (en) * | 2016-12-13 | 2017-06-20 | 人本集团有限公司 | Compact high capacity sealed bearings |
| CN207454564U (en) * | 2017-11-14 | 2018-06-05 | 人本集团有限公司 | Automobile camshaft is with needle bearing and grinding bearing assembly |
| CN108907622A (en) * | 2018-07-30 | 2018-11-30 | 江苏亚奥精密机械有限公司 | A kind of bearing processing method |
| CN109340253A (en) * | 2018-11-30 | 2019-02-15 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | The flanged (FLGD) double containment abnormity of outer diameter completely fills needle bearing |
| CN110064901A (en) * | 2019-05-24 | 2019-07-30 | 新昌县新翔宇轴承有限公司 | A kind of bearing processing |
| CN213064338U (en) * | 2020-06-11 | 2021-04-27 | 浙江科莱特轴承股份有限公司 | Bearing with labyrinth seal structure |
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Application publication date: 20210806 |