CN102384159A - Full-carbon graphite/ mixed carbon graphite rolling bearing and manufacturing method thereof - Google Patents
Full-carbon graphite/ mixed carbon graphite rolling bearing and manufacturing method thereof Download PDFInfo
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- CN102384159A CN102384159A CN2011101927868A CN201110192786A CN102384159A CN 102384159 A CN102384159 A CN 102384159A CN 2011101927868 A CN2011101927868 A CN 2011101927868A CN 201110192786 A CN201110192786 A CN 201110192786A CN 102384159 A CN102384159 A CN 102384159A
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Abstract
The invention discloses a full-carbon graphite/ mixed carbon graphite rolling bearing and a manufacturing method thereof. The rolling bearing comprises a bearing outer ring, an inner ring, a rolling body and a retainer, wherein the rolling body is embedded between an outer ring roll path and an inner ring roll path; and the retainer separates the rolling body uniformly along the circumference direction. According to the invention, carbon graphite which is high-temperature resistant, corrosion resistant, has high intensity and favorable self-lubrication performance and mechanical performance is utilized to manufacture four large components which comprise the outer ring, the inner ring, the rolling body and the retainer of the rolling bearing, and the design structure of the bearing is regulated essentially according to the special physical and mechanical properties of the carbon graphite material relatively to bearing steel; when the four large components of the rolling bearing are manufactured by carbon graphite, the bearing is the full-carbon graphite rolling bearing; and when one to three components of the four large components are manufactured by carbon graphite, the bearing is the mixed carbon graphite rolling bearing. According to the invention, the operation reliability and the service life of the bearing are improved under the working conditions of high temperature, low temperature, acid-base corrosion and difficult fluid lubrication, and the bearing is an invention with great engineering application value.
Description
Technical field
The present invention relates to extraordinary technical field of rolling bearings, particularly a kind of with wherein part or all of four rolling bearing in carbon graphite (carbon/graphite/carbon graphite-Carbon/Graphite/Carbon Graphite) the manufacturing rolling bearing four big parts (outer ring, inner ring, rolling element and retainer) and preparation method thereof.
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Background technique
The working environment of rolling bearing is very harshness-high temperature, superhigh temperature, low temperature, ultralow temperature, acid and alkali corrosion, x radiation x or the like sometimes; In this case; Make bearing and adopt fluid lubrication obviously can not satisfy usage requirement with steel; So all-ceramic rolling bearing and hybrid ceramic rolling bearing have just occurred, still can reliably fulfil antifriction and support function in the hope of rolling bearing under these operating modes.Need to prove that all-ceramic rolling bearing is meant that outer ring, inner ring and rolling element all processed by pottery, the hybrid ceramic rolling bearing is meant that outer ring, inner ring and rolling element do not processed by pottery entirely.
Though there is the effect of antifriction in all-ceramic rolling bearing/hybrid ceramic rolling bearing,, there is following point in all-ceramic rolling bearing/hybrid ceramic rolling bearing:
(1) though stupalith has certain self lubricity; But its self lubricity is compared with graphite etc.; Have a long way to go; And the transfer membrane lubricating function that does not possess graphite, therefore under all incompetent operating mode of all fluid lubricants such as high temperature, superhigh temperature, the life-span of " doing " ceramic bearing has been satisfied not the requirement of main frame;
(2) pottery is crisp and hard, and machinability is very poor, to the bearing cage of shape more complicated, basically can't be with stupalith manufacturing processing, and therefore, usually said full-ceramic bearing is not the rolling bearing that four big parts are all made with stupalith yet;
(3) the manufacturing cost of stupalith is still very high.Therefore, under some harsh operating mode, ceramic bearing also is not best selection, even we can say that ceramic bearing has satisfied not under this operating mode the requirement to bearing operational reliability and life-span at all.
Along with the development of carbon graphite technology, make that making rolling bearing with carbon graphite becomes possibility.
Below introduce carbon graphite earlier.Carbon graphite is claimed the mechanical carbon of using again; Its basic material can be divided into: (1) carbonaceous material: mainly the carbon raw materials by noncrystalline matter (low regularity) constitutes; Matter is hard, hardness is high, wear resistance is good under the fluid lubrication, about 300 degree of the oxidation starting temperature in atmosphere; (2) graphite material: mainly the carbon raw materials by crystalline constitutes, and the matter hardness is low, and self-lubricating property is good, and the good temperature resistance ability is arranged, about 450 degree of the oxidation starting temperature in atmosphere; (3) carbon graphite material mainly is made up of noncrystalline charcoal and crystallization carbon feedstock, and matter hardness is high, and self-lubricating property is better, and mechanical strength is high, and wear-resisting property is good, and temperature tolerance is a little less than the graphite material, and the oxidation starting temperature in atmosphere about 400 is spent.Adopt these basic materials, select different bonding raw materials, impregnated material etc. just to can further improve mechanical strength, wear resistance, corrosion resistance, self lubricity, impermeability and the film forming of carbon graphite, common impregnated material has resin, salt and metal.Because carbon graphite good temperature resistance, lower temperature resistance, self lubricity, acid-alkali-corrosive-resisting property and obtainable high mechanical strength; Carbon graphite has been used for making sliding bearing (only comprising bearing shell and axle sleeve) widely, has obtained good technical effect and economic benefit.
But because the characteristic of carbon graphite is not seen the report of making rolling bearing with carbon graphite so far as yet.Though those skilled in the art knows carbon graphite and can adapt to very rigorous environment; Such as; Environment such as high temperature, superhigh temperature, low temperature, ultralow temperature, acid and alkali corrosion, x radiation x; Hope all always also and can process full carbon graphite rolling bearing or mix the carbon graphite rolling bearing that like this, those rolling bearings just can overcome with steel to be made bearing and adopt fluid lubrication can not be suitable for the defective of above rigorous environment with carbon graphite.But, because the technical problem below existing makes those skilled in the art assert with carbon graphite manufacturing rolling bearing and does not have exploitativeness:
At first, existing rolling bearing generally comprises outer ring, inner ring, retainer and several rolling elements, is not scattered and improves bearing capacity as much as possible for guaranteeing bearing rolling element in assembly process; It is general all greater than 180 degree that the ball angle is filled out in its design; This just makes inserting of last 1 ~ 2 rolling element could realize that this is no problem to the reasonable steel lasso of elasticity by the radial elastic distortion of outer ring, but carbon graphite material is more crisp; As to carbon graphite outer ring integral body is applied same radial deformation power; The danger that brittle failure takes place is just arranged,, can't adopt last 1 ~ 2 the rolling element legal system of lasso distortion filling to make rolling bearing therefore to the carbon graphite outer ring.
Then, general when existing steel rolling bearing is installed in main frame, outer ring and housing bore transition or interference fit, inner ring and back shaft interference fit.Because steel have certain elasticity, make existing steel rolling bearing and other parts interference fit diametrically become possibility, still, when processing outer ring or inner ring, because the fragility of carbon graphite should not directly be carried out radial interference and installed with carbon graphite.
Subsequently, because steel have the more intense characteristic of expanding with heat and contract with cold, when therefore utilizing steel to process the outer ring of rolling bearing, inner ring and rolling element, need between rolling element and Internal and external cycle, have a corresponding play, the selection of these play all has standard to comply with.And when utilizing carbon graphite to process outer ring, inner ring and rolling element, the selection of bearing clearance does not have standard and can look into, and need carry out the specific aim of specialty and calculate the play that can select suitablely.
At last, when existing rolling bearing retainer is processed by metallic material, generally take punching press deformation method (moulding distortion) to assemble, when processing, adopt resiliently deformable to assemble by engineering plastics.But carbon graphite enbrittles, and can't adopt existing moulding distortion and resiliently deformable method to assemble.
Based on above-mentioned reason and existing general processing technology, make that those skilled in the art can't expect making rolling bearing with carbon graphite, even perhaps simply expect, but consider above-mentioned understanding, think that also carbon graphite can't make rolling bearing.
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Summary of the invention
First purpose of the present invention is to provide a kind of full carbon graphite/mixing carbon graphite rolling bearing, to solve the technological deficiency that existing technology can not realize making with carbon graphite rolling bearing.
Second purpose of the present invention is to provide the making method of a kind of full carbon graphite/mixing carbon graphite rolling bearing, to solve the technological deficiency that existing technology can not realize making with carbon graphite rolling bearing
In order to achieve the above object; The invention provides a kind of full carbon graphite/mixing carbon graphite rolling bearing; Comprise rolling element between outer ring, inner ring, embedding outer ring raceway and the inner ring raceway and the retainer that rolling element is along the circumferential direction evenly separated; 4 big part outer rings, inner ring, rolling element and the retainer of full carbon graphite rolling bearing are all processed by carbon graphite, mix 4 big part parts of carbon graphite rolling bearing and are processed by carbon graphite, and all the other parts are still processed by existing rolling bearing common used material.
If the outer ring processes with carbon graphite, in the outer ring or/and be provided with on the inner ring and fill out the segment mouth, notch size with do not make the outer ring stressed deform just can whole rolling elements be inserted between outer ring raceway and the inner ring raceway be as the criterion.
If process with carbon graphite the outer ring, then its external diameter should be more smaller than existing bearing outside diameter, is that less interference fit is to Spielpassung with assurance with cooperating of housing bore.For preventing the relative movement between outer ring and the housing bore, can be at external diameter surface Machining anti-slip tank, and rely on hot-cast in anti-slip tank, to implant anti-slip ring, the external diameter of anti-slip ring be slightly larger than the carbon graphite outer ring external diameter and and housing bore between formation transit to interference fit.
If inner ring is processed with carbon graphite, then its internal diameter should be more bigger than existing bearing bore diameter, is that less interference fit is to Spielpassung with assurance with cooperating of back shaft.For preventing the relative movement between inner ring and the back shaft, can process anti-slip tank at inside diameter surface, and rely on hot-cast in anti-slip tank, to implant anti-slip ring, the internal diameter that the internal diameter of anti-slip ring is slightly less than the carbon graphite inner ring also and between the back shaft forms interference fit.Anti-skidding ring material is engineering plastics, nylon, PTFE, fabroil elastomeric material.
If retainer is processed with carbon graphite; It is crown that retainer is; Crown flat end is arranged on a side of bearing; And crown opening end plugs between outer ring raceway and the inner ring raceway from bearing one side vertically, moves back towards flat extreme direction cunning vertically for preventing retainer, has the dust cover and/or snap ring and/or the baffle plate that the carbon graphite retainer are had the axial limiting function on the bearing.
When bearing outer ring and/or inner ring and/or retainer are processed by carbon graphite, can adopt hot pressing or bonding mode to install metal-coating additional it is strengthened.
Carbon graphite comprises that one of them plants material: carbonaceous material, graphite material, carbon graphite material, silicon carbide-graphite composite material, machinery is with material with carbon element, electrographite material, and these materials are through afterwards material modified of various resin impregnations, salt dipping, metal impregnation.
The making method of a kind of full carbon/admixed graphite rolling bearing comprises:
(1) comprise the wherein process of carbon graphite outer ring working process, carbon graphite inner ring working process, carbon graphite rolling element working process and carbon graphite retainer working process at least, wherein:
The carbon graphite outer ring makes: a carbon graphite pipe is provided, and the external diameter of pipe is greater than the design external diameter of outer ring, and the internal diameter of pipe is less than the design internal diameter of outer ring, and the width of pipe is greater than the design width of outer ring; Along cross-sectional cut one carbon graphite pipe, obtain some carbon graphite rings, the width of ring is greater than the design width of outer ring; The carbon graphite ring is machined to design external diameter, design internal diameter and the design width that its external diameter, internal diameter and width equal the outer ring respectively; On the carbon graphite ring, process outer ring raceway, carry out chamfering, deburring in interior finishing, after process the carbon graphite outer ring;
The carbon graphite inner ring is made: a carbon graphite pipe is provided, and the external diameter of pipe is greater than the design external diameter of inner ring, and the internal diameter of pipe is less than the design internal diameter of inner ring, and the width of pipe is greater than the design width of inner ring; Along cross-sectional cut one carbon graphite pipe, obtain some carbon graphite rings, the width of ring is greater than the design width of inner ring; The carbon graphite ring is machined to design external diameter, design internal diameter and the design width that its external diameter, internal diameter and width equal inner ring respectively; On the carbon graphite ring, process inner ring raceway, carry out chamfering, deburring in interior finishing, after process the carbon graphite inner ring;
The carbon graphite rolling element is made: provide one with the final close solid carbon graphite rolling element blank of rolling element shape; Employing comprises that cutting, the machining mode of grinding process; Reach the requirement that designs rolling element until shape, size and precision, process the carbon graphite rolling element;
The carbon graphite retainer is made: a carbon graphite pipe is provided, and the external diameter of pipe is greater than the design external diameter of retainer, and the internal diameter of pipe is less than the design internal diameter of retainer, and the width of pipe is greater than the design width of retainer; Along cross-sectional cut one carbon graphite pipe, obtain some carbon graphite rings, the width of ring is greater than the design width of retainer; The carbon graphite ring is machined to design external diameter, design internal diameter and the design width that its external diameter, internal diameter and width equal retainer respectively; On the carbon graphite ring, process the pocket hole, the pocket hole is shaped as the straight shape of the mouth as one speaks or outer uncovered type along the retainer axial slices, and uncovered angle is no more than 60 degree; Carry out chamfering, deburring in interior finishing, process the whole retainer of carbon graphite;
If the outer ring processes with carbon graphite, on outer ring and/or inner ring, be provided with in order to what insert ball and fill out the segment mouth, its size should guarantee not make that the outer ring is stressed just can all balls all be inserted between outer ring raceway and the inner ring raceway from indentation, there;
(2) between outer ring and inner ring, place rolling element in advance, and utilize breach to place last or last two rolling elements, accomplish the trap of outer ring, inner ring and rolling element;
(3) insertion or riveted bearing cage, retainer evenly separates all rolling elements;
(4) seal ring, dust cover, back-up ring, snap ring are set at interior accessory, process complete full carbon graphite/mixing carbon graphite rolling bearing.
This method also comprises: to carbon graphite outer ring, carbon graphite inner ring, carbon graphite retainer, can adopt hot pressing or bonding mode to install metal-coating additional it is strengthened.
This method also comprises: when bearing outer ring and/or inner ring are processed by carbon graphite, at bearing outer ring external diameter surface and/or inner ring inside diameter surface processing anti-slip tank, and rely on hot pouring to implant the elastic anti-slip ring.
Claimant of the present invention improves constantly at carbon graphite material and moulding process through research for many years, makes respectively under the prerequisite that performance and mechanical strength are obviously promoted, and implements following means and makes full carbon graphite/mixing carbon graphite rolling bearing become a reality:
(1) design bearing is filled out the ball angle generally all greater than 180 degree; If process with carbon graphite the outer ring; In the outer ring or/and be provided with on the inner ring and fill out the segment mouth, notch size with do not make the outer ring stressed deform just can whole rolling elements be inserted between outer ring raceway and the inner ring raceway be as the criterion.It is existing in the outer ring application of force that the setting of filling out the segment mouth is avoided, and causes the fit of last 1 ~ 2 rolling element of packing into after the resiliently deformable, avoided the brittle failure of outer ring in assembly process thus;
(2) if process with carbon graphite the outer ring, then its external diameter should be more smaller than existing bearing outside diameter, is that less interference fit is to Spielpassung with assurance with cooperating of housing bore.For preventing the relative movement between outer ring and the housing bore, can be at external diameter surface Machining anti-slip tank, and rely on hot-cast in anti-slip tank, to implant anti-slip ring, the external diameter of anti-slip ring be slightly larger than the carbon graphite outer ring external diameter and and housing bore between formation transit to interference fit.Avoided thus because of outer ring and the excessive outer ring brittle failure that causes of housing bore installation interference; If inner ring is processed with carbon graphite, then its internal diameter should be more bigger than existing bearing bore diameter, is that less interference fit is to Spielpassung with assurance with cooperating of back shaft.For preventing the relative movement between inner ring and the back shaft, can process anti-slip tank at inside diameter surface, and rely on hot-cast in anti-slip tank, to implant anti-slip ring, the internal diameter that the internal diameter of anti-slip ring is slightly less than the carbon graphite inner ring also and between the back shaft forms interference fit.Avoided thus because of inner ring and the excessive inner ring brittle failure that causes of back shaft installation interference;
(3) process with carbon graphite as if retainer; It is crown that retainer is; Because the carbon graphite retainer can not carry out moulding distortion riveted assembling as existing metallic retainer, can not as the plastics retainer, utilize resiliently deformable to buckle into the formula assembling, therefore can only make the straight shape of the mouth as one speaks and uncovered type; Both there be not the yet INSERTTYPE assembling of nonelastic distortion of moulding distortion; Be the side that crown flat end is arranged on bearing, and crown opening end plug between outer ring raceway and the inner ring raceway from bearing one side vertically, during bearing operation; For preventing that retainer from moving back towards flat extreme direction cunning vertically, be provided with on the bearing to have dust cover and/or snap ring and/or the baffle plate that the carbon graphite retainer is had the axial limiting function.
When carbon graphite outer ring, carbon graphite inner ring, carbon graphite rolling element and carbon graphite retainer assemble mutually, just processed full carbon graphite rolling bearing, otherwise, when having only the part part to be carbon graphite in the four big parts, just processed mixing carbon graphite rolling bearing.
The present invention adopts, and carbon graphite high temperature resistant, low temperature resistant, corrosion-resistant and that mechanical processing characteristic is all good is made rolling bearing four big parts; And then make full carbon graphite rolling bearing and mix the carbon graphite rolling bearing, compare with the hybrid ceramic bearing with existing full-ceramic bearing (in fact retainer also is not a stupalith):
(1) carbon graphite has better mechanical processing characteristic than pottery, can make bearing parts and bearing with complicated shape, like the carbon graphite lasso of band seal groove, and the bearing ring of the anti-slip ring of band, carbon graphite retainer etc.;
(2) carbon graphite has better self-lubricating property and transfer membrane lubrication property than pottery, and therefore under the oil-free lubrication state, the use reliability of carbon graphite bearing is higher than ceramic bearing, is longer than ceramic bearing working life.
Description of drawings
Fig. 1 is the sectional drawing of full carbon graphite double-sided belt dust cover deep groove ball bearing;
Fig. 2 is the sectional drawing of the mixing carbon graphite double-sided belt dust cover deep groove ball bearing of carbon graphite for the retainer material.
Embodiment
Below in conjunction with the sectional drawing of accompanying drawing 1 full carbon graphite double-sided belt dust cover deep groove ball bearing, specify the present invention.
See also Fig. 1; A kind of full carbon graphite rolling bearing; The anti-slip ring 16 in retainer 14, dust cover 15 and outer ring that it comprises outer ring 11, inner ring 12, embeds the rolling element 13 between outer ring raceway and the inner ring raceway and rolling element is along the circumferential direction evenly separated, wherein rolling bearing 4 big part-outer rings 11, inner ring 12, rolling element 13 and retainer 14 are all processed by carbon graphite.
When bearing outer ring and/or inner ring and/or retainer are processed by carbon graphite, can adopt hot pressing or bonding mode to install metal-coating additional it is strengthened.
Be provided with through these, overcome carbon graphite fully because of the more crisp assembly process that causes or install and use the danger of process brittle failure.
In this example; To full carbon graphite rolling bearing; Because of the thermal expansion amount of carbon graphite material is littler than the thermal expansion amount of existing Bearing Steel material, so its play is littler than existing bearing steel rolling bearing; Concrete how much little, need to calculate definite according to bearing outer ring, inner ring and rolling element material and size thereof.Complete less thermal expansion amount and the cold contour projector of carbon graphite rolling bearing makes clamping stagnation, seize phenomenon should not occur than existing steel rolling bearing when it uses under the extreme temperature situation, and be more safe and reliable.
Carbon graphite comprises that one of them plants material: carbonaceous material, graphite material, carbon graphite material, silicon carbide-graphite composite material, machinery is with material with carbon element, electrographite material, and these materials are through afterwards material modified of various resin impregnations, salt dipping, metal impregnation.
The existing rolling bearing of manufacturing with steel, pottery or plastics; Because its 4 big part material does not have self lubricity or only has very limited self lubricity; Therefore need to carry out fluid lubrication toward bearing interior adding lubricant oil or lubricating grease, like this, under extreme temperature or extreme chemical mediator invasion and attack situation; The fluid lubricant that adds in the bearing becomes short slab, is limiting the operational reliability and the service life of bearing on the contrary.In this instance; Full carbon graphite rolling bearing adopts has the carbon graphite material of splendid self-lubricating property; Therefore, under all immalleable operating mode of all fluid lubricants, the fluid lubricant of can not annotating in the bearing; Rely on good selflubricating and the transfer membrane lubrication property of carbon graphite, just can satisfy the DESIGN RELIABILITY and design service life requirement of main frame rolling bearing.
A kind of making method of full carbon graphite rolling bearing comprises:
The carbon graphite outer ring makes: a carbon graphite pipe is provided, and the external diameter of pipe is greater than the design external diameter of outer ring, and the internal diameter of pipe is less than the design internal diameter of outer ring, and the width of pipe is greater than the design width of outer ring; Along cross-sectional cut one carbon graphite pipe, obtain some carbon graphite rings, the width of ring is greater than the design width of outer ring; Need grinding different with the steel bearing outer ring, adopt metal cutting and milling method that the carbon graphite ring is machined to design external diameter, design internal diameter and the design width that its external diameter, internal diameter and width equal the outer ring respectively with ultra smart final shaping; Employing is machined in and processes outer ring raceway, seal groove on the carbon graphite ring and fill out the segment mouth.The cutter head is made by diamond or cubic boron nitride.
In this instance; Carbon graphite outer ring external diameter surface band anti-slip tank and anti-slip ring, after need processing in the carbon graphite outer ring, at external diameter surface according to figure as requested car system anti-slip tank; Adopt hot pouring molding manufacture procedure plastics to prevent slip ring, the carbon graphite outer ring of finally processing external diameter surface band anti-slip tank and anti-slip ring then.
The carbon graphite inner ring is made: a carbon graphite pipe is provided, and the external diameter of pipe is greater than the design external diameter of inner ring, and the internal diameter of pipe is less than the design internal diameter of inner ring, and the width of pipe is greater than the design width of inner ring; Along cross-sectional cut one carbon graphite pipe, obtain some carbon graphite rings, the width of ring is greater than the design width of inner ring; Need grinding different with the steel bearing inner race, adopt metal cutting and milling method that the carbon graphite ring is machined to design external diameter, design internal diameter and the design width that its external diameter, internal diameter and width equal inner ring respectively with ultra smart final shaping; Employing is machined in and processes outer ring raceway and seal groove on the carbon graphite ring.The cutter head is made by diamond or cubic boron nitride.
The carbon graphite rolling element is made: provide one with the final close solid carbon graphite rolling element blank of rolling element shape, adopt machining modes such as cutting, grinding to reach the requirement that designs rolling element until shape, size and precision, process the carbon graphite rolling element.
The carbon graphite retainer is made: a carbon graphite pipe is provided, and the external diameter of pipe is greater than the design external diameter of retainer, and the internal diameter of pipe is less than the design internal diameter of retainer, and the width of pipe is greater than the design width of retainer; Along cross-sectional cut one carbon graphite pipe, obtain some carbon graphite rings, the width of ring is greater than the design width of retainer; Adopt machining process that the carbon graphite ring is machined to design external diameter, design internal diameter and the design width that its external diameter, internal diameter and width equal retainer respectively; Adopt machining process on the carbon graphite ring, to process the pocket hole, the pocket hole is shaped as the straight shape of the mouth as one speaks or outer uncovered type along the retainer axial slices, and uncovered angle is no more than 60 degree; Carry out finishing such as chamfering, deburring, process the whole retainer of carbon graphite.The carbon graphite retainer adopts turning, milling, drilling etc. to process, and the cutter head is made by diamond or cubic boron nitride.
Dust cover is made: adopt the low carbon steel plate stamping to form, its material, design and making method are with normal steel rolling bearing.
Full carbon graphite deep groove ball bearing shown in Figure 1, a cover bearing needs an outer ring, inner ring, plurality of balls, a retainer and two dust covers.Bearing inside whether annotates special greases in advance or special lubricating oil is decided according to the bearing operating conditions.
After required all parts of bearing are all got all the ready; The assembly technique of filling out the segment mouth according to existing steel housing washer band to part clean, sorting, trap assembling; The punching press dust cover has just been processed the deep groove ball bearing of full carbon graphite double-sided belt dust cover shown in Figure 1.
Below only being an explanation for example, is not to be used to limit the present invention.
Below in conjunction with accompanying drawing 2 retainer materials is the sectional drawing of the mixing carbon graphite double-sided belt dust cover deep groove ball bearing of carbon graphite, specifies the present invention.
The retainer material is that the mixing carbon graphite deep groove ball bearing of carbon graphite is in four big part outer rings 21, inner ring 22, ball 23 and the retainer 24 of deep groove ball bearing; Only have retainer 24 to adopt the carbon graphite material manufacturing, all the other three-major-items adopt non-carbon graphite material manufacturings such as existing steel, pottery, plastics.
Non-carbon graphite outer ring 21 makes: identical with non-carbon graphite material outer ring making methods such as existing steel, pottery, plastics.
Non-carbon graphite inner ring 22 is made: identical with non-carbon graphite material inner ring making methods such as existing steel, pottery, plastics.
The mixing carbon graphite deep groove ball bearing that retainer material shown in Figure 2 is a carbon graphite, a cover bearing needs an outer ring, inner ring, plurality of balls, a retainer and two dust covers.Bearing inside whether annotates special greases in advance or special lubricating oil is decided according to the bearing operating conditions.
After required all parts of bearing are all got all the ready, according to the assembly technique of existing steel rolling bearing to part clean, sorting, trap assembling, the punching press dust cover has just been processed the deep groove ball bearing of mixing carbon graphite double-sided belt dust cover shown in Figure 2.
Below only being an explanation for example, is not to be used to limit the present invention.
Because high temperature resistant, low temperature resistant, the anti-medium invasive ability of carbon graphite is very strong and have a good self-lubricating property; Therefore; Full carbon graphite rolling bearing can be stablized proper functioning with mixing carbon graphite rolling bearing under the situation of the inefficient high temperature of existing rolling bearing, low temperature, acid-alkali medium or inconvenience enforcement film lubrication, greatly improve life-span and the reliability of rolling bearing under harsh operating conditions.
Can also constitute many very embodiments of big difference that have under the situation without departing from the spirit and scope of the present invention.Should be appreciated that except like enclosed claim limited, the present invention is not limited at the specific embodiment described in the specification.
Claims (11)
1. full carbon graphite/mixing carbon graphite rolling bearing; It is characterized in that; Comprise rolling element between outer ring, inner ring, embedding outer ring raceway and the inner ring raceway and the retainer that rolling element is along the circumferential direction evenly separated, 4 big part outer rings, inner ring, rolling element and the retainer of full carbon graphite rolling bearing are all processed by carbon graphite, mix in the 4 big parts of carbon graphite rolling bearing; Only the part part is processed by carbon graphite, and all the other parts are still processed by existing rolling bearing material.
2. full carbon graphite as claimed in claim 1/mixing carbon graphite rolling bearing; It is characterized in that; When process with carbon graphite the outer ring; And the design of rolling bearing is when filling out the ball angle and spending greater than 180, or/and be provided with on the inner ring rib and fill out the segment mouth, notch size is as the criterion to satisfy the outer ring to be deformed just can from then on ball be pushed bearing race in the outer ring.
3. full carbon graphite as claimed in claim 1/mixing carbon graphite rolling bearing is characterized in that, the state of processing with carbon graphite when the outer ring, and its external diameter is more smaller than existing bearing outside diameter, so that form than slight interference to Spielpassung with housing bore; When the state that inner ring is processed with carbon graphite, its internal diameter is more bigger than existing bearing bore diameter, so that form than slight interference to Spielpassung with back shaft.
4. like claim 1 or 3 described full carbon graphite/mixing carbon graphite rolling bearings; It is characterized in that; Under the state of processing with carbon graphite when the outer ring; The external diameter surface processing non-slip groove in the outer ring adopts the hot pouring method in non-slip groove, to implant anti-slip ring, and anti-slip ring external diameter is slightly larger than the outer ring external diameter and forms interference fit with housing bore; Under the state that inner ring is processed with carbon graphite, at inner ring inside diameter surface processing non-slip groove, adopt the hot pouring method in non-slip groove, to implant anti-slip ring, anti-slip ring internal diameter is slightly less than the diameter of axle of back shaft and forms interference fit with back shaft.
5. full carbon graphite as claimed in claim 1/mixing carbon graphite rolling bearing; It is characterized in that if retainer is processed with carbon graphite, it is crown that retainer is; Crown flat end is arranged on a side of bearing; And crown opening end plugs between outer ring raceway and the inner ring raceway from bearing one side vertically, and, have the dust cover and/or snap ring and/or the baffle plate that the carbon graphite retainer are had the axial limiting function on the bearing.
6. full carbon graphite as claimed in claim 1/mixing carbon graphite rolling bearing is characterized in that, its radial internal clearance is smaller or equal to existing bearing steel rolling bearing.
7. full carbon graphite as claimed in claim 1/mixing carbon graphite rolling bearing is characterized in that, full carbon graphite/mixing carbon graphite rolling bearing is made into oilless bearing.
8. full carbon graphite as claimed in claim 1/mixing carbon graphite rolling bearing; It is characterized in that; Carbon graphite comprises that one of them plants material: carbonaceous material, graphite material, carbon graphite material, silicon carbide-graphite composite material, machinery is with material with carbon element, electrographite material, and these materials are through afterwards material modified of various resin impregnations, salt dipping, metal impregnation.
9. full carbon graphite as claimed in claim 1/mixing carbon graphite rolling bearing is characterized in that, to carbon graphite outer ring, carbon graphite inner ring, carbon graphite retainer, adopts hot pressing or bonding mode to install metal-coating additional it is strengthened.
10. the making method of full carbon graphite/mixing carbon graphite rolling bearing is characterized in that, comprising:
(1) comprise the wherein process of carbon graphite outer ring working process, carbon graphite inner ring working process, carbon graphite rolling element working process and carbon graphite retainer working process at least, wherein:
The carbon graphite outer ring makes: a carbon graphite pipe is provided, and the external diameter of pipe is greater than the design external diameter of outer ring, and the internal diameter of pipe is less than the design internal diameter of outer ring, and the width of pipe is greater than the design width of outer ring; Along cross-sectional cut one carbon graphite pipe, obtain some carbon graphite rings, the width of ring is greater than the design width of outer ring; The carbon graphite ring is machined to design external diameter, design internal diameter and the design width that its external diameter, internal diameter and width equal the outer ring respectively; On the carbon graphite ring, process outer ring raceway, carry out chamfering, deburring in interior finishing, after process the carbon graphite outer ring;
The carbon graphite inner ring is made: a carbon graphite pipe is provided, and the external diameter of pipe is greater than the design external diameter of inner ring, and the internal diameter of pipe is less than the design internal diameter of inner ring, and the width of pipe is greater than the design width of inner ring; Along cross-sectional cut one carbon graphite pipe, obtain some carbon graphite rings, the width of ring is greater than the design width of inner ring; The carbon graphite ring is machined to design external diameter, design internal diameter and the design width that its external diameter, internal diameter and width equal inner ring respectively; On the carbon graphite ring, process inner ring raceway, carry out chamfering, deburring in interior finishing, after process the carbon graphite inner ring;
The carbon graphite rolling element is made: provide one with the final close solid carbon graphite rolling element blank of rolling element shape; Employing comprises that cutting, the machining mode of grinding process; Reach the requirement that designs rolling element until shape, size and precision, process the carbon graphite rolling element;
The carbon graphite retainer is made: a carbon graphite pipe is provided, and the external diameter of pipe is greater than the design external diameter of retainer, and the internal diameter of pipe is less than the design internal diameter of retainer, and the width of pipe is greater than the design width of retainer; Along cross-sectional cut one carbon graphite pipe, obtain some carbon graphite rings, the width of ring is greater than the design width of retainer; The carbon graphite ring is machined to design external diameter, design internal diameter and the design width that its external diameter, internal diameter and width equal retainer respectively; On the carbon graphite ring, process the pocket hole, the pocket hole is shaped as the straight shape of the mouth as one speaks or outer uncovered type along the retainer axial slices, and uncovered angle is no more than 60 degree; Carry out chamfering, deburring in interior finishing, process the whole retainer of carbon graphite;
If the outer ring processes with carbon graphite, on outer ring and/or inner ring, be provided with in order to what insert ball and fill out the segment mouth, its size should guarantee not make that the outer ring is stressed just can all balls all be inserted between outer ring raceway and the inner ring raceway from indentation, there;
(2) between outer ring and inner ring, place rolling element in advance, and utilize breach to place last or last two rolling elements, accomplish the trap of outer ring, inner ring and rolling element;
(3) insertion or riveted bearing cage, retainer evenly separates all rolling elements;
(4) seal ring, dust cover, back-up ring, snap ring are set at interior accessory, process complete full carbon graphite/mixing carbon graphite rolling bearing.
11. the making method of a kind of full carbon graphite as claimed in claim 10/mixing carbon graphite rolling bearing is characterized in that, also comprises:
When bearing outer ring and/or inner ring are processed by carbon graphite,, and rely on hot pouring to implant the elastic anti-slip ring at bearing outer ring external diameter surface and/or inner ring inside diameter surface processing anti-slip tank;
When bearing outer ring and/or inner ring and/or retainer are processed by carbon graphite, can adopt hot pressing or bonding mode to install metal-coating additional it is strengthened.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101927868A CN102384159A (en) | 2011-07-11 | 2011-07-11 | Full-carbon graphite/ mixed carbon graphite rolling bearing and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101927868A CN102384159A (en) | 2011-07-11 | 2011-07-11 | Full-carbon graphite/ mixed carbon graphite rolling bearing and manufacturing method thereof |
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| CN102384159A true CN102384159A (en) | 2012-03-21 |
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| CN2011101927868A Pending CN102384159A (en) | 2011-07-11 | 2011-07-11 | Full-carbon graphite/ mixed carbon graphite rolling bearing and manufacturing method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852977A (en) * | 2012-08-30 | 2013-01-02 | 上海斐赛轴承科技有限公司 | Enclosed carbon graphite retainer antifriction bearing and manufacturing method |
| CN102873797A (en) * | 2012-09-29 | 2013-01-16 | 中国航天科技集团公司第五研究院第五一〇研究所 | Processing device for retainers of crossed roller collars |
| CN109854614A (en) * | 2018-12-06 | 2019-06-07 | 彩虹（合肥）液晶玻璃有限公司 | A kind of carbon graphite combination bearing and edge machine equipment |
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Application publication date: 20120321 |