CN100449162C - Inner ring less heating isostatic pressure silicon nitride full ceramic ball bearing and its manufacturing method - Google Patents
Inner ring less heating isostatic pressure silicon nitride full ceramic ball bearing and its manufacturing method Download PDFInfo
- Publication number
- CN100449162C CN100449162C CNB2006101341189A CN200610134118A CN100449162C CN 100449162 C CN100449162 C CN 100449162C CN B2006101341189 A CNB2006101341189 A CN B2006101341189A CN 200610134118 A CN200610134118 A CN 200610134118A CN 100449162 C CN100449162 C CN 100449162C
- Authority
- CN
- China
- Prior art keywords
- bearing
- ceramic
- ceramic ball
- outer ring
- main shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Rolling Contact Bearings (AREA)
Abstract
The inventive bearing comprises a ceramic outer ring, a cage, a ceramic ball and a main shaft of high precision machine tools. The ball bearing is an angle contact type and on the outer ring and the main shaft is separately disposed one their own outer raceway and inner raceway. The rolling ceramic ball is disposed between the raceways. The main shaft, ceramic ball and the ceramic bearing outer ring are assembled to be an integral one. The bearing and the main shaft of the machine tool are separately mounted. The manufacture method of the high precision ceramic bearing without inner rings includes the following steps: rough lapping, half-fine grinding, grinding, supergrinding and polishing.
Description
Technical field
The present invention relates to a kind of mechanical fitting, particularly relate to inner ring less heating isostatic pressure silicon nitride full ceramic ball bearing and manufacture method thereof that the close main shaft of a kind of high speed and super precision is used.
Background technique
Silicon nitride ceramics has good overall characteristics such as light specific gravity, wear-resisting, high temperature resistant, high elastic modulus, high compressive strength and toughness, nonmagnetic, insulation, be particularly suitable for making high speed lathe ceramic components such as ceramic ball bearing and ceramic main shaft, and in field extensive uses such as machinery, electronics, Aero-Space, chemical industry.The bearing that cooperates with main shaft is the critical component of numerical control machine tool, and the height of bearing accuracy and working life are all closely related with production, so the bearing of high precision and long service life is needed in the actual production.
Since 1972 first cover ceramic bearings are succeeded in developing beginning, the more high performance ceramic bearing of a new generation is competitively being developed, developed to each industrial powers in the world just always, start with from industrialization, carry out a series of exploitation, developments such as corresponding apparatus, technology, frock, at aspects such as material preparation, product processing, organization of production and extensive practicability process exploitations, dropped into great amount of manpower and material resources.From application result, the most outstanding effect is to have improved the working life and the limit speed of bearing greatly, for development at a high speed and the ultra-speed precise lathe component that provide the foundation.In addition, the application in industries such as high temperature, burn into insulation, vacuum has also obtained good result.As in the high-speed main spindle parts, the D of ceramic bearing
mThe n value has reached 212～2,500,000; In the high temperature field, ceramic bearing is high temperature resistant to have reached 800 ℃; Can stably work in some highly corrosive medium midium or long terms such as strong acid, highly basic, salt.In the world today famous bearing giants none in exploitation, produce ceramic bearing, and the height of quality of product has become an important symbol weighing its strength of enterprise.
Usually, ceramic ball bearing can be divided into two kinds of hybrid ceramic ball bearing (Hybrid Ceramic BallBearing) and full ceramic ball bearings (All-ceramic Ball Bearing).At present, domestic most scientific research institutions and enterprise also only limit to hybrid ceramic ball bearing for the research of ceramic bearing, and many research units also are in the experimental study stage.And just at the early-stage for the research of full ceramic ball bearing in China, except that a little fundamental researchs have been done by only a few unit, also more do not test and industrialization work.Current, domesticly can form industrialized scale, the enterprise that produces ceramic ball bearing is considerably less, and the ceramic ball bearing model is incomplete, and is of less types, and the unit that can develop and produce the no inner ring full ceramic ball bearing of special type does not have especially.At present, the high speed ceramic bearing of development and application mainly is a hybrid type in the world, i.e. rolling element stupalith manufacturing, and Internal and external cycle is still made with bearing steel material.Because the factor of aspects such as production technology, cost price, the application of full-ceramic bearing has been subjected to certain restriction.But, because engineering ceramics has many good performances, as higher hardness and intensity, very strong corrosion-resistant, wear-resistant, heat-resisting ability and good chemical inertness etc., and the design and manufacturing technology of full ceramic ball bearing is further ripe, and it will obtain increasingly extensive application in fields such as machinery, Aero-Space, chemical industry, military affairs, electronic apparatus and accurate manufacturings.
Summary of the invention
The object of the present invention is to provide a kind of inner ring less heating isostatic pressure silicon nitride full ceramic ball bearing and manufacture method thereof, this no inner ring full ceramic ball bearing and machine tool chief axis assemble, can improve rigidity, precision, the working life of the rotating speed and the numerical control machine tool high-speed main spindle of bearing, reach the close processing purpose of high speed and super precision.
The objective of the invention is to be achieved through the following technical solutions:
A kind of inner ring less heating isostatic pressure silicon nitride full ceramic ball bearing, include ceramic outer ring, retainer, ceramic ball and high precision machine tool main shaft, this ball bearing is the angle contacting type, outer ring and main shaft are respectively equipped with an outer raceway and an interior raceway separately, face each other, and concave surface separately is towards the other side, the outer ring has fore shaft, the rolling element ceramic ball is arranged between the raceway, and main shaft and ceramic ball, ceramic bearing outer ring are assembled into one, and bearing and machine tool chief axis are that separated type is installed.
Aforesaid a kind of inner ring less heating isostatic pressure silicon nitride full ceramic ball bearing, its ceramic ball forms for the silicon nitride ceramics sintering; Retainer adopts complete ceramic retainer or polyethers ethyl ketone material to make, and adopts the outer ring guide structure.
Aforesaid a kind of inner ring less heating isostatic pressure silicon nitride full ceramic ball bearing, the main parameter of this bearing:, can be optimized design by optimizing Design Software or program as ceramic ball diameter, ceramic ball number, groove curvature radius, outer ring raceway diameter, outer ring groove position, fore shaft height.
A kind of manufacture method of inner ring less heating isostatic pressure silicon nitride full ceramic ball bearing, highi degree of accuracy do not have inner ring full-ceramic bearing processing technology step can be divided into slightly grind, half lappingout, lappingout, super lappingout, polishing, by slightly finishing to the smart multiple working procedure that divides, the raceway groove on race ring and the main shaft adopts diamond typing emery wheel to carry out high speed and precision and grinds; The manufacture method of processing ceramic ball is the taper polishing; The grinding of raceway groove need be carried out with the diamond emery wheel of finalizing the design in the outer ring, the processing of its raceway groove was divided into by thick to the smart stage, need the diamond typing emery wheel of corresponding granularity and select corresponding grinding speed to process, the stage of polishing at last processes with superfine grinding.
The manufacture method of aforesaid a kind of inner ring less heating isostatic pressure silicon nitride full ceramic ball bearing, the grinding of its ceramic ball be divided into slightly grind, half lappingout, lappingout, super lappingout, polishing stage.
Advantage of the present invention and effect are:
1. bearing itself of the present invention adopts stupalith, and it is simple in structure, and is in light weight, high temperature resistant, limit running speed height.
2. the present invention is a kind of full ceramic ball bearing of assembling angle contacting type, compares with traditional bearing, and the heat that produces in rolling is less, and resiliently deformable is little, the running accuracy height.
3. bearing affected by heat of the present invention is little, prolonged bearing life-span, improved bearing highi degree of accuracy and high stability energy, and greatly reduce the cost of maintenance.
4. the present invention is a full ceramic ball bearing, is applied on the machine tool chief axis unit, and the life-span in operation process has improved more than 3 times than traditional steel ball bearing, and can run well under the situation that need not add lubricant grease.
5. the present invention discards traditional ceramic inner ring, the employing that replaces will process bearing channel on the main shaft, main shaft and ceramic ball, ceramic bearing outer ring are assembled into one, not only can realize the supporting effect of original traditional bearing, and original structure compared is simple, in light weight, rotating speed is high.
Description of drawings
Fig. 1 does not cooperate schematic representation for the present invention has the inner ring ceramic bearing with main shaft;
Fig. 2 does not have inner ring ceramic bearing structure schematic representation for the present invention;
Fig. 3 is a retainer plan view of the present invention;
Fig. 4 is a retainer left view of the present invention;
Fig. 5 is a taper ceramic ball lapping device schematic representation of the present invention;
Fig. 6 is the present invention's pottery outer ring processing schematic representation.
Embodiment
High-speed, high precision does not have the inner ring full-ceramic bearing and comprises: outer ring 1 and the ceramic ball 3 made by hot pressed silicon nitride (HPSN), the main shaft 2 of the retainer of being made by PEEK (polyethers ethyl ketone) 4, the band raceway groove that is formed from steel.Wherein inner ring is replaced by machine tool chief axis, can realize rotation at a high speed, and ceramic outer ring then is fixed in the bearing support by the mounting type of traditional bearing, because the particularity of structure, the present invention adopts can fabricated design bearing mounting type.
This ball bearing is the angle contacting type, that is to say, outer ring 1 and main shaft 2 have an outer raceway and an interior raceway separately respectively, and they face each other, and concave surface separately is towards the other side, and outer ring 1 has fore shaft, makes bearing inseparable after assembling.The assembling of this ball bearing adopts outer ring 1 to add thermal expansion, to assemble.Ceramic ball rolling element 3 is arranged between the raceway, and radially with the bearing that is designed to bear substantially radially with certain axial load in these raceways roll and contact.Ceramic ball 3 is formed by the silicon nitride ceramics sintering, and its precision level reaches the G5 class precision of steel ball at least, and part reaches the G3 class precision of steel ball.
Because bearing outer ring and bearing ball all adopt hot pressed silicon nitride (HPSN) as material, its finished surface can produce different crackles, so the highi degree of accuracy that provides of the present invention do not have inner ring full-ceramic bearing processing technology can be divided into slightly grind, several steps such as half lappingout, lappingout, super lappingout, polishing, finish to essence branch multiple working procedure by thick.Raceway groove on race ring and the main shaft adopts diamond typing emery wheel to carry out high speed and precision and grinds.Reach P4 level level after the ceramic bearing assembling.The raceway groove that processes on the main shaft will carry out accurate abrasive machining, and carry out post-processed could and ceramic ball assemble, to prolong its working life.Because the hardness of ceramic ball is big, can not directly contact with spindle material.Need carry out surface treatment, reach desirable contact friction state.Bearing ball adopts the taper grinding process technique, because technology is divided science, so grinding efficiency height, ceramic ball precision height.Processed ceramics ball precision can reach G3, G5 level level.Circularity≤0.08 μ m, surface roughness≤0.01 μ m.
The manufacture method of ceramic ball 3 is the taper polishing.During grinding, top lap 5 is installed on the transmission shaft, adopt flexible member to be connected between transmission shaft and the machine tool chief axis, and the drive top lap rotates with angular velocity with the lathe main shaft, following abrasive disk 6 is installed on the base of lathe and maintains static, and ceramic ball to be ground places among the groove between top lap and the following abrasive disk.This machine tool chief axis is a drill press spindle, and this main shaft can have level or stepless speed regulation between 100～1200 rev/mins, and can make top lap that ceramic ball is applied downward grinding pressure, and this grinding pressure can require with the grinding of different operations to regulate.The grinding of ceramic ball also divide slightly grind, the stages such as half lappingout, lappingout, super lappingout, polishing, this be because the requirement of ceramic ball than higher, the Grinding Quality on surface is directly connected to aspects such as the precision of bearing and working life.
The processing of outer ring 1 is different with ball, and the grinding of raceway groove need be carried out with the diamond emery wheel 7 of finalizing the design in the outer ring.The processing of raceway groove also will be divided into by thick to the smart stage.This just needs varigrained diamond typing emery wheel 7 and selects different grinding speeds to process.Especially to the end in the polishing stage, this is related to the working life of bearing ring.So will process with superfine grinding.
The present invention is owing to moving under condition at a high speed, so the present invention adopts the retainer of outer ring guide structure.This is that the retainer running speed is far below the running speed of axle because high-speed spindle bearing is when running well.By fixed outer ring lip-guided retainer, can significantly reduce grazing and vibration between retainer and guide surface, make the work of bearing more stable.High-speed spindle bearing inner ring radiating condition is poor, more should obtain lubricated more fully.Adopt outer ring guiding retainer, help making bearing to be cooled off fully with lubricated.With the rotation of ball, the lubricant oil of sending into the bearing inner race raceway groove constantly is thrown into outer ring raceway under the drive of spheroid and under self action of centrifugal force, and it is good lubricated that guide surface and raceway groove are all obtained.So under equal lubricating condition, the bearing life of outer ring guiding retainer will be longer than the bearing between inner ring guiding maintenance.The solid cage that retainer adopts complete ceramic retainer or PEEK material to make adopts the outer ring guide structure.This structure also is convenient to the lubricated of bearing and is cleaned.Wherein PEEK (polyethers ethyl ketone) is the best retainer material that is used for ceramic bearing.Friction factor minimum between PEEK and the HIPSN is 0.028.And, in the bulk ceramics bearing test, prove and can satisfy the high speed requirement.For increasing bearing self oil storage capacity, should on retainer, leave corresponding oil duct.
After bearing bore diameter, external diameter and inner race width are determined, other parameters have been carried out optimal design in the design process of the present invention.Make bearing performance the best, longest-lived.Carried out optimization repeatedly on wherein main parameter groove curvature radius, the parameters such as design of Internal and external cycle raceway groove, for example: outer ring raceway diameter, outer ring groove position, fore shaft height etc., to reach best motion state.
Claims (3)
1. inner ring less heating isostatic pressure silicon nitride full ceramic ball bearing, include ceramic outer ring, retainer, ceramic ball and high precision machine tool main shaft, it is characterized in that, this ball bearing is the angle contacting type, outer ring (1) and main shaft (2) are respectively equipped with an outer raceway and an interior raceway separately, face each other, concave surface separately is towards the other side, outer ring (1) has fore shaft, rolling element ceramic ball (3) is arranged between the raceway, main shaft and ceramic ball, ceramic bearing outer ring are assembled into one, and bearing and machine tool chief axis (2) are installed for separated type; Ceramic ball (3) forms for the silicon nitride ceramics sintering; Retainer (4) adopts complete ceramic retainer or polyethers ethyl ketone material to make, and adopts the outer ring guide structure.
2. the manufacture method of an inner ring less heating isostatic pressure silicon nitride full ceramic ball bearing, it is characterized in that, highi degree of accuracy do not have inner ring full-ceramic bearing processing technology step can be divided into slightly grind, half lappingout, lappingout, super lappingout, polishing, by slightly finishing to the smart multiple working procedure that divides, the raceway groove on race ring and the main shaft adopts diamond typing emery wheel (7) to carry out high speed and precision and grinds; The manufacture method of processing ceramic ball (3) is the taper polishing; The grinding of raceway groove need be carried out with the diamond emery wheel (7) of finalizing the design in outer ring (1), the processing of its raceway groove was divided into by thick to the smart stage, need the diamond typing emery wheel (7) of corresponding granularity and select corresponding grinding speed to process, the stage of polishing at last processes with superfine grinding.
3. the manufacture method of a kind of inner ring less heating isostatic pressure silicon nitride full ceramic ball bearing as claimed in claim 2 is characterized in that, the grinding of ceramic ball (3) be divided into slightly grind, half lappingout, lappingout, super lappingout, polishing stage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101341189A CN100449162C (en) | 2006-11-02 | 2006-11-02 | Inner ring less heating isostatic pressure silicon nitride full ceramic ball bearing and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101341189A CN100449162C (en) | 2006-11-02 | 2006-11-02 | Inner ring less heating isostatic pressure silicon nitride full ceramic ball bearing and its manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1948771A CN1948771A (en) | 2007-04-18 |
| CN100449162C true CN100449162C (en) | 2009-01-07 |
Family
ID=38018361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101341189A Active CN100449162C (en) | 2006-11-02 | 2006-11-02 | Inner ring less heating isostatic pressure silicon nitride full ceramic ball bearing and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100449162C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8858087B2 (en) | 2012-01-30 | 2014-10-14 | Rolls-Royce Plc | Bearing assembly |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101707425B (en) * | 2009-10-28 | 2011-06-15 | 沈阳建筑大学 | High-speed motor device with ceramic shaft core |
| CN101792318B (en) * | 2010-03-19 | 2012-01-25 | 江苏力星通用钢球股份有限公司 | High-precision manufacture process of precise ceramic ball |
| CN102297203A (en) * | 2011-06-15 | 2011-12-28 | 大连大友高技术陶瓷有限公司 | Production process for high-precision roller bearing |
| CN105160090A (en) * | 2015-08-27 | 2015-12-16 | 沈阳建筑大学 | Optimization design method of novel ceramic ball bearing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2076175U (en) * | 1990-05-09 | 1991-05-01 | 上海市化工轻工供应公司 | Large-power magnetically driving pump |
| US6033120A (en) * | 1995-10-25 | 2000-03-07 | Minebea Kabushiki-Kaisha | Compound bearing assembly for swing arm of hand disc drive |
| US6158894A (en) * | 1999-07-28 | 2000-12-12 | Saint-Gobain Ceramics & Plastics, Inc. | All ceramic bearing |
| CN1586814A (en) * | 2004-09-07 | 2005-03-02 | 沈阳建筑大学 | Novel high precision ceramic ball grinder |
-
2006
- 2006-11-02 CN CNB2006101341189A patent/CN100449162C/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2076175U (en) * | 1990-05-09 | 1991-05-01 | 上海市化工轻工供应公司 | Large-power magnetically driving pump |
| US6033120A (en) * | 1995-10-25 | 2000-03-07 | Minebea Kabushiki-Kaisha | Compound bearing assembly for swing arm of hand disc drive |
| US6158894A (en) * | 1999-07-28 | 2000-12-12 | Saint-Gobain Ceramics & Plastics, Inc. | All ceramic bearing |
| CN1586814A (en) * | 2004-09-07 | 2005-03-02 | 沈阳建筑大学 | Novel high precision ceramic ball grinder |
Non-Patent Citations (4)
| Title |
|---|
| 全陶瓷轴承的研究现状及其应用前景. 王重海等.现代技术陶瓷，第3期. 2003 |
| 全陶瓷轴承的研究现状及其应用前景. 王重海等.现代技术陶瓷，第3期. 2003 * |
| 角接触轴承的配置方式. 王红梅等.农机化研究，第2期. 2005 |
| 角接触轴承的配置方式. 王红梅等.农机化研究，第2期. 2005 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8858087B2 (en) | 2012-01-30 | 2014-10-14 | Rolls-Royce Plc | Bearing assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1948771A (en) | 2007-04-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100365295C (en) | High precision hot press silicon nitride ceramic ball bearing and its manufacturing method | |
| CN103737024B (en) | The rolling bearing of the accurate hard car molding of lasso and processing method thereof | |
| CN100449162C (en) | Inner ring less heating isostatic pressure silicon nitride full ceramic ball bearing and its manufacturing method | |
| CN104759954B (en) | A kind of revolving body workpieces pre-stressed grinding method | |
| CN103522168A (en) | Cylindrical part outer circle machining device based on holder eccentric rotary swing type double-plane grinding | |
| CN108266459A (en) | Match the machine tool chief axis circular runout computational methods in gap based on Bearing Grinding | |
| CN102635635A (en) | Precise ceramic bearing and processing technology thereof | |
| He et al. | Advances in ultra-precision machining of bearing rolling elements | |
| CN102133648A (en) | Hydrodynamic-hydrostatic suspension mainshaft bearing | |
| CN101725629A (en) | Silicon nitride ceramic ball bearing and processing method thereof | |
| CN205876972U (en) | High -speed electric spindle bearing | |
| Ebert | Performance of silicon nitride (Si3N4) components in aerospace bearing applications | |
| CN102814733A (en) | Large-size end surface processing electric spindle for mixed support of hydrostatic bearing and rolling bearing | |
| Ren et al. | A novel lapping method for ultraprecision cylindrical rollers based on precision evolution | |
| CN109578431A (en) | The design method of surface micro-moulding in a kind of hydrodynamic combination bearing and bearing | |
| CN102094899A (en) | Air bearing capable of rotating at low, medium and high speed | |
| CN201843898U (en) | High-speed electric mainshaft bearing for machine tool | |
| Pan et al. | Study on design and simulation of a novel isolator cylindrical roller bearing | |
| CN108425952A (en) | The integrated ball bearing of the motor of pre-pressing structure | |
| JP2000145794A (en) | Ultra-high speed, high rigidity rolling bearing | |
| CN104114321A (en) | Housing with a bore for an internal combustion engine | |
| CN208040930U (en) | The integrated ball bearing of the motor of pre-pressing structure | |
| CN106944927B (en) | A kind of ultrahigh speed bistrique | |
| CN102261379A (en) | Air bearing of high-speed heavy-duty involute internal channel self-lubricating dynamic and static coupling structure | |
| CN102297203A (en) | Production process for high-precision roller bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |