CN103331456A - Machining method of rolling bearing formed by whole and precise hard turning and molding of sleeve ring - Google Patents
Machining method of rolling bearing formed by whole and precise hard turning and molding of sleeve ring Download PDFInfo
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- CN103331456A CN103331456A CN2013102611005A CN201310261100A CN103331456A CN 103331456 A CN103331456 A CN 103331456A CN 2013102611005 A CN2013102611005 A CN 2013102611005A CN 201310261100 A CN201310261100 A CN 201310261100A CN 103331456 A CN103331456 A CN 103331456A
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- raceway
- bearing
- lasso
- shape
- rolling bearing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B1/00—Methods for turning or working essentially requiring the use of turning-machines; Use of auxiliary equipment in connection with such methods
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B5/00—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
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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
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- General Engineering & Computer Science (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention provides a machining method of a rolling bearing formed by whole and precise hard turning and molding of a sleeve ring. The machining method is characterized by comprising the following steps: after quenching and annealing heat treatment of the sleeve ring, carrying out the whole and precise hard turning and molding; and then combining and assembling a rolling body, wherein a sleeve ring rolling path comprises a fixed-curvature-groove-shape rolling path, a non-groove-shaped rolling path, a variable-curvature-shaped rolling path and a non-groove-shaped rolling path according to section shapes. The machining method disclosed by the invention overcomes the defects in the prior art that (1) performance defects on a machining surface, including grinding burn, a grinding metamorphic layer, grinding tensile stress, abrasive particle adhesion, scratches and the like, are caused by grinding and molding the sleeve ring; (2) shape defects on the machining surface that mutual position precision of all parts is not high, the shape of the rolling path cannot be accurately guaranteed and the like, are caused by carrying out a plurality of times of machining on different surfaces, even the same surface; (3) the defects that large investment of equipment, a tool clamp and personnel, and high machining cost are caused; and (4) the defects that a cutting solution needs to be used and the machining method is not environment-friendly enough are caused. The invention provides an anti-fatigue and green machining method which has the very great engineering actual meanings.
Description
Technical field
The present invention relates to technical field of rolling bearings, particularly the processing method of the rolling bearing of the whole accurate hard car moulding of a kind of lasso.
Background technology
Along with main frame develops to high speed, heavy duty, green, high reliability, rolling bearing has been proposed more and more higher requirement, especially require to have higher operational reliability and longer service life.
Theory and practice is verified, the key factor that influences bearing operational reliability and life-span is divided into two big aspects, first is exactly sealed precision and reliability, sealed precision is not high, unreliable, the result is exactly outer interior intrusion of the past bearing of various foreign matters of the outer leakage of the past bearing of the interior lubricating grease of bearing and bearing, cause lubrication failure, seal failure, wear out failure, and these lost efficacy with respect to the fatigue flake inefficacy of classics, all belong to tribology failure mode, initial failure form, thereby greatly reduce operational reliability and the service life of bearing; The physics of the geometric accuracy of second bearing ring and rolling element working surface and surface, subsurface, chemistry and mechanical performance, be shape and performance, if the shape of these working surfaces and performance can not get good control, concentrate such as having big geometrical deviation, local defect, grinding burn or grinding skin, surperficial tension or surface stress, all will enlarge markedly the contact stress of bearing inside or significantly reduce the bearing capacity of bearing, increase bearing and early send out the risk of wear out failure and fatigue flake inefficacy, reduce operational reliability and the service life of bearing.
And prior art to the sealed precision that improves bearing, effectively control the shape of bearing working surface and aspect of performance and exactly have problem on principle and the method.Send out in the bearing ring raceway earlier because bearing failure is many, again because, under the situation that seal is determined, the sealed precision of bearing depends on the accuracy of manufacture of lasso, therefore, the method that shapes of bearing ring just becomes the key in the middle of crucial.
Following processing technology is taked in the manufacturing of prior art bearing ring usually: blank forming (forging or pipe fitting) → annealing → turning or cold rolling are expanded → are quenched, tempering → grinding → raceway is super smart, have 6 big class operations, wherein, grinding process comprises mill lasso external diameter or internal diameter again, grind two end faces, mill rib and mill raceway 4 operations, therefore, after lasso heat treatment, it is super smart that outer ring or inner ring all experience 4 grindings and 1 time at least, consider grinding and superly all can be divided into corase grind and correct grinding as single-minded, thick super and smart super, therefore, outer ring or inner ring will produce following problems thus through the moulding of at least 10 procedures ability:
(1) the lasso all surface all on different equipment with different processing mode machine-shaping, shape between each surface and positional precision, such as the mutual alignment precision of seal groove and raceway face, external diameter surface, inside diameter surface, just cannot say for sure card, have influence on the sealed precision of bearing;
(2) turning before heat treatment of lasso seal groove is finished, the deformation of can quenching during heat treatment, and seal groove again can't not be reprocessed after heat treatment, has influence on the sealed precision of bearing;
(3) other surface of the lasso except seal groove, many employing grindings and super smart mode moulding, be example with the raceway, after heat treatment, at least experience corase grind, correct grinding, slightly super and essence surpasses four operations, position error, error are rerun a movie unavoidable, have geometric errors such as out-of-roundness, percent ripple, the error of this analogy roughness macroscopic view can not be by super smart removal;
(4) grinding belongs to random material removal processing, process also is the process that abrasive particle comes off at random on the emery wheel, these abrasive particles that come off can be attached on the raceway face, are rolled into raceway face, also can abrade raceway face, therefore, through the raceway face of grinding-shaping, its local defect is unavoidable in theory, and stress concentrates on the local defect place and produces, destroy integrity of shape and the full performance of raceway face, become bearing wear source and tired source;
(5) the grinding radiating condition is relatively poor, so grinding area extreme temperatures, to produce grinding burn or grinding skin inevitably, hardness and the bearing capacity of raceway face have been reduced, grinding easily produces surperficial tension in addition, even if or produce compression, the degree of depth of compressive stress layer is also superficial,, can't realize the antifatigue manufacturing of rolling bearing lasso;
(6) manufacturing procedure is many, and device type and quantity that processing is employed are many, needs the frock jig of preparation many, and the labour of input is many, and in addition, all process steps all needs cutting fluid, and therefore, the processing method of prior art bearing ring also is uneconomical, not green.
Simultaneously, the super precisive shaped mode of the raceway grinding of prior art lasso and oilstone also makes the shape design of raceway be subjected to great limitation:
Generation method or plunge method are mainly adopted in raceway grinding at present, super essence then adopts the reciprocating vibration method, this just defines the design form of raceway, to ball bearing, it can only be that single circular arc is decided curvature ditch shape raceway that raceway cuts shape, to roller bearing, it can only be to decide curvature straight line raceway that raceway cuts shape, as adopt other raceway to cut shape, and there is very big difficulty in grinding, and conformal microstoning (the raceway shape that keeps raceway design shape or grinding to obtain) just can't realize on principle.And single circular arc ditch shape raceway contacts with ball, there is a theoretical contact point, contact stiffness is restricted, do not mean at first that and contact stiffness is high under same external load and service condition, can there be bigger relative displacement in outer ring and inner ring, thereby have influence on the seal clearance of bearing, reduced running accuracy and the sealed precision of bearing, meaned simultaneously, the bearing capacity of bearing is restricted; The straight line raceway contacts with roller, can produce stress at the roller two ends and concentrate, and this running stability and operational reliability to roller bearing obviously is extremely harmful.
In the prior art, for improving bearing load carrying capacity, improve the contact stress of rolling element and raceway, also have and the ball bearing race raceway is cut shape be designed to non-single circular arc variable curvature ditch shape raceway, such as sharp peach shape ditch shape raceway, the roller bearing ferrule raceway is cut shape be designed to variable curvature such as logarithm convexity shape, but, these variable curvature raceways cut shape and rely on existing grinding mode, precise forming can't be given, though super lappingout can reduce the roughness of raceway face, the form accuracy of raceway can not be improved, even when super lappingout processing capacity is big, the raceway form accuracy is also had destruction, therefore, the situation of variable curvature raceway milu often occurs, such raceway is from the angle of raising bearing operational reliability and service life, even classical single circular arc ditch shape raceway and straight line raceway all are not so good as.Also have, rely on super lappingout moulding variable curvature raceway, such as the logarithm crowned raceway, the raceway form parameter is very limited, such as, convexity can not be big, otherwise working (machining) efficiency and cost just can not bear, but for the roller bearing that bears heavy duty, sometimes, big protruding amount design is necessary.The wedge shape raceway that unilateral bearing adopts, raceway is made up of several lozenges and wedge-shaped slot, more can't be by the grinding moulding.
In a word, no matter existing bearing ring grinding and super precisive shaped mode are for deciding curvature ditch shape and non-ditch shape raceway, variable curvature ditch shape and non-ditch shape raceway, all having relatively more outstanding technology, quality problems.
Therefore, research, the processing and fabricating method that the invention bearing ring is new, overcome that lasso raceway face that the prior art grinding brings and subsurface performance deficiency, the relative bearing of seal groove install that the positional precision of surface and working surface is not high, the bearing ring raceway cuts that shape adopts that the variable curvature design is limited, equipment frock drop into big, must adopt existing a series of technology, quality, efficient, cost and environmental issues such as the not enough environmental protection of cutting fluid, realize antifatigue manufacturing and the green manufacturing of bearing, seem very urgent and necessary.
Summary of the invention
The object of the present invention is to provide the preparation method of the rolling bearing of the whole accurate hard car moulding of a kind of lasso, with the problem that the shape that overcomes existing bearing manufacture craft very complicated, too high, the not enough environmental protection of cost and lasso groundwork surface and performance can't well be guaranteed from principle, developing bearing ring antifatigue, green molding mode.Another object of the present invention is to provide a kind of rolling bearing that is applicable to the whole accurate hard car moulding of lasso, the raceway design shape that existing rolling bearing lasso adopts grinding and super smart mode moulding to exist is limited to overcome, sealed precision is difficult to guarantee, shape and the performance of raceway can not get good control, thereby hinders that the bearing operational reliability further improves and the further problem of prolongation of service life.The noun of mentioning in the literary composition " soft car " is processed in the presclerotic turning of heat-treatment quenching for lasso, and " hard car " is the turning processing of lasso after the heat-treatment quenching sclerosis.The inventive method is suitable for processing criterion and non-standard rolling bearing.
Technical scheme of the present invention is as follows:
The present invention is the processing method of the rolling bearing of the whole accurate hard car moulding of a kind of lasso, and described rolling bearing comprises lasso, embeds the rolling element between outer ring raceway and the inner ring raceway, it is characterized in that may further comprise the steps:
1) lasso processing comprises following operation:
01 preparations leave the inside and outside lasso of semi-finished product of allowance,
02 will leave the inside and outside ring quenching of semi-finished product, the tempering heat treatment of allowance,
03 carry out the accurate hard car moulding of integral body respectively with the inside and outside lasso after the heat treatment,
2) bearing trap assembling with inner ring, outer ring and the finished product rolling element sorting trap after the whole accurate hard car moulding in the step 1) 03, and is finished the assembling of a whole set of bearing.
The processing method of described rolling bearing is characterized in that: the whole accurate hard car moulding described in the step 1) 03 comprises accurate hard car datum level, reaches the requirement of bearing completed products ferrule design; Be as the criterion with described datum level then, the location that is installed, accurate hard all the other positions of car reach the requirement of bearing completed products ferrule design.
The processing method of described rolling bearing is characterized in that: described datum level is the inside and outside lasso installation matching surface when using.
The processing method of described rolling bearing is characterized in that: described all the other positions comprise raceway, raceway rib, raceway oil duct, lasso rib and the seal groove of lasso.
The processing method of described rolling bearing is characterized in that: the raceway of described lasso comprises decides curvature ditch shape raceway, and its cross sectional shape comprises single circular arc; Variable curvature ditch shape raceway, its cross sectional shape comprises ellipse, hyperbola, parabola and composite curve, described composite curve comprises sharp peach shape and goes sharp peach shape; And the ditch shape raceway of bottom band depot fat groove.
The processing method of described rolling bearing is characterized in that: the raceway of described lasso comprises decides the non-ditch shape of curvature raceway, and its cross sectional shape comprises single straight line, three sections straight lines and single orthodrome; The non-ditch shape of variable curvature raceway, its cross sectional shape comprise logarithmic curve, hyperbola, two sections straight line folders one section circular arc, multi-section circular arc and composite curve; Also comprise the wedge shape raceway formed by some lozenges and wedge-shaped slot and protruding amount for 0 to 0.5 millimeter convex raceway.
The processing method of described rolling bearing is characterized in that: described cover loop material comprises bearing steel material, engineering ceramics, engineering plastics, carbon graphite and composite.
The processing method of described rolling bearing is characterized in that: in described step 1) 01, the inside and outside lasso semi-finished product of described bearing adopt prior art to comprise that soft car, buffing, cold rolling expansion or powder metallurgy process make.
The processing method of described rolling bearing, it is characterized in that: described step 2), when the sorting trap, variable curvature or bottom are opened the ditch shape raceway of depot fat groove, ball and outer ring raceway or inner ring raceway are at 2 when contacting, and contact point is in lasso raceway bottom, the diameter at contact point place directly related with the design bearing play on the lasso raceway is converted into the raceway base diameter and with it as the trap size, carry out the sorting trap of lasso and ball, realize the control to bearing clearance.
The processing method of described rolling bearing is characterized in that: also comprise step 1) 04 after described step 1) 03, described step 1) 04 is that raceway and raceway rib internal, outer collar surpass lappingout, roll extrusion, tumbling or polishing processing.
Be suitable for the rolling bearing with described method processing, it is characterized in that the groove-section shape of the inside and outside lasso of described rolling bearing comprises: decide curvature and variable curvature ditch shape raceway; The bottom is with the ditch shape raceway of depot fat groove and is decided curvature and the non-ditch shape of variable curvature raceway; Also comprise wedge shape raceway and convex raceway.
The processing method of the rolling bearing of the whole accurate hard car moulding of lasso of the present invention, surface accuracy after the whole accurate hard car moulding of lasso reaches the correct grinding level, therefore, for most bearings, when lasso raceway face roughness is not had excessive demand, no longer raceway is carried out other machining after the whole accurate hard car moulding of lasso; To the minority bearing, lasso raceway face roughness is required when high, after the whole accurate hard car moulding of lasso, can surpass polishings such as lappingout, roll extrusion, tumbling, polishing to the lasso raceway face and process.
The processing method of the rolling bearing of the whole accurate hard car moulding of lasso of the present invention, the rolling bearing of comparing existing technology bearing ring grinding processing method and making thus, have the following advantages: the design of (1) raceway shape no longer is subjected to the restriction of processing method, cutting shape with the contacted lasso raceway of rolling element can be designed as and decide the curvature raceway, also can be designed as the variable curvature raceway, can give full play under some operating modes between variable curvature raceway and the rolling element contact stress evenly, friction is little, temperature rise is low, service load and fast advantage.Such as, to the lasso ditch shape raceway that contacts with ball, its cross sectional shape can be designed as ellipse or composite curve, contacts with 2 of ball formation or multiple spot, with the contact stiffness of raising bearing, thereby improves the dynamic seal (packing) precision of bearing and the bearing capacity of bearing; Can also open grease storage groove in ditch shape raceway bottom, improve the greasy property of bearing; Roller bearing ferrule raceway bus be can be designed as the needed convex of any operating mode and protruding amount, thereby the stress concentration phenomenon that forms when avoiding the roller end to contact with raceway improves running stability and the operational reliability of bearing; (2) all hard car moulding of lasso all surface, especially raceway, the raceway rib, oil duct, lasso rib and seal groove all in, installation matching surface when outer collar is used is the processing of benchmark location, to large scale bearing (corresponding seal groove width is bigger) even hard car moulding in the location that once is installed, the form accuracy on each surface self and the mutual alignment precision between each surface have been guaranteed, thereby running accuracy and the sealed precision of bearing have been significantly improved, no longer heat-treat after the hard car of seal groove in addition, there is not the heat treatment deformation problem, makes the sealed precision of a whole set of bearing obtain guaranteeing very reliably from principle and processing method; (3) each uniform surface of lasso time hard car moulding of processing precise, same surface is through multiple devices, the location that is installed repeatedly, thereby avoided position error and error to rerun a movie, make each surface, especially the out-of-roundness error of raceway face, waviness error and raceway form error are able to good control, have improved running stability and the operational reliability of bearing; (4) be different from grinding and superlinishing material removing method at random, hard Vehicle Processing belongs to the directed excision mode of material, especially the employing of numerically controlled lathe, even if for variable curvature raceway and special-shaped raceway (for example wedge shape raceway), in the same old way can Precision Machining, and can guarantee the very high raceway accuracy of form and position, this is highly beneficial to the operational reliability that reduces bearing vibration noise, raising bearing; (5) do not exist in grinding and the microstoning, because the abrasive particle on emery wheel and the oilstone comes off and when in time not discharging machining area, cause the scuffing of processing roller surface, the problem of running over and injure, hard car can obtain not have the raceway face of local geometric defective on the principle, make shape and the performance of roller surface all be able to good control, thereby control even avoid the generation in source of wear and tired source, realize the antifatigue manufacturing, improved operational reliability and the service life of a whole set of bearing; (6) avoided the surperficial tension of raceway face grinding burn, grinding skin and formation that grinding produces, hard car has obtained surface and the subsurface excellent properties of high rigidity, compression, thereby significantly improved bearing capacity and the anti-fatigue ability of bearing, improved operational reliability and the service life of bearing; (7) flexibility of hard Vehicle Processing is very strong, much complex-shaped, grinding and the super smart lasso that almost can't make moulding, hard car all can very high precision be made, and the cover loop-shaped is more complicated, hard car is more obvious with respect to grinding and super smart advantage, thereby has widened the scope that designs and produces of the nonstandard bearing of high-performance, has shortened the R﹠D cycle of the nonstandard bearing of high-performance; (8) hard Vehicle Processing operation is few, and device type and quantity that processing is employed are few, needs the frock jig of preparation few, and the labour of input is few, is economical and efficient; Simultaneously, process even can not adopt these chemical industry article of cutting fluid (do cutting, the hard car of dry type) therefore can be accomplished environmental protection to greatest extent, has great importance for green design and the making of rolling bearing.
For obtaining higher machining accuracy, generally take the hard turning machine of numerical control.Simultaneously, very big because hard car produces resistance to cutting, need machine tool chief axis, guide rail and ball-screw and whole lathe to have very high rigidity.The hardness of hard Vehicle Processing material is all than higher, therefore to select the cutter of special material making for use, such as diamond cutter, cubic boron nitride (CBN) cutter, polycrystalline cubic boron nitride (PCBN) cutter, sintex, hard alloy cutter and various high-performance coating and self-lubricating knife tool.The cover loop material is contained all for the manufacture of the material of bearing ring with can be used for making the material of bearing ring, comprise steel, engineering ceramics, engineering plastics, carbon graphite and various composites etc., according to material and the shape of processing lasso, select the wet Cutting Process that does not have the dried Cutting Process of cutting fluid or cutting fluid is arranged.
The whole accurate hard car moulding of bearing ring both had been different from the prior art, and heat treated bearing ring chamfering is carried out the hard car transformation of the way or the hard car seal groove transformation of the way on not with the bearing ring of seal groove, was different from non-mill bearing ring moulding process again.The transformation of the way is just carried out hard car to the local surfaces (generally being chamfering or seal groove) that heat treated lasso can't carry out grinding, does not relate to other significant surfaces that comprises the lasso raceway; Non-mill bearing generally is used in all lower occasions of rotating speed and load, does not have special required precision, and lasso generally is punch forming, does not relate to grinding or hard Vehicle Processing after the lasso heat treatment, does not more relate to accurate hard car.
Accurate hard car is different from the soft car of lasso before quenching, and generally on 45HRC, typical hardness range is 58HRC to 68HRC to the hardness of accurate hard car lasso.
Accurate hard car is different from common hard car, the geometric accuracy on accurate hard car surface and the accuracy of form and position can reach the level of half correct grinding and even super lappingout, surface roughness Ra such as the bearing ring raceway can be less than 0.15 micron, and out-of-roundness is less than 0.25 micron, and dimensional tolerance is less than 5 microns.
Need to prove, the whole accurate hard car moulding of lasso means on the outer ring (bearing parts or the parts at outer raceway place) of forming bearing and the inner ring (bearing parts or the parts at interior raceway place) and comprises that each main surface (for example after metal ferrules heat treatment) after the lasso integral macroscopic reaches design hardness of raceway mainly relies on turning processing (car firmly) precise forming, but this does not get rid of respective surface on the lasso (for example filling out the segment mouth) and adopts hard milling, the hard machining mode that hard draw is cut etc. beyond the hard car is finished, do not get rid of that respective surface and individual areas (for example set screw hole on the bearing with spherical outside surface inner ring) before the lasso integral macroscopic reaches design hardness (for example before the metal ferrules heat treatment) rely on soft processing mode (for example boring) to finish on the lasso yet, more do not get rid of, raceway is taked local impewdance matching or non-raceway position taked the lasso of differential annealing, (hardness of lasso raceway is than the hardness height at other position behind the local impewdance matching to excise the surface of different hardness during hard car simultaneously, after the differential annealing of non-raceway position, the hardness at other position of hardness ratio of annealing region is low).The processing method of the rolling bearing of the whole accurate hard car moulding of lasso, also not getting rid of after the whole accurate hard car moulding of lasso what lasso was carried out is the surface chemistry heat treatment of purpose with the protection, such as phosphatization, zinc-plated, spraying insulating barrier, also not getting rid of after the whole accurate hard car moulding of lasso what raceway was carried out is that raceway face and the subsurface of purpose handled with further raising hardness, self lubricity, wearability and fatigue resistance etc.
The present invention is not only applicable to single-row ball-bearing and single-row roller bearing, be applicable to that simultaneously biserial and multiple row ball bearing, biserial and multiple row roller bearing and biserial and multiple row comprise the rolling bearing of ball row and rows of rollers simultaneously, roller bearing comprises cylinder roller bearing, taper roll bearing, self-aligning roller bearing and needle bearing, therefore is fit to the rolling bearing of all types, size, structure and material.To biserial or multiple row rolling bearing, the biserial on the lasso or multiple row raceway be accurate hard car moulding in the location that once is installed, and can better guarantee mutual alignment precision high between each raceway.
In sum, the processing method of the rolling bearing of the whole accurate hard car moulding of lasso of the present invention, make each surface of bearing ring especially raceway face obtained the very high accuracy of form and position and performance, improved the surface integrity of raceway, realized the antifatigue manufacturing of bearing ring, and can both carry out high-efficiency and precision processing to the ditch shape raceway of deciding curvature raceway, variable curvature raceway, bottom band depot fat groove and wedge shape raceway, processing method compared to existing technology, advantage is outstanding aspect the bearing performance raising.The rolling bearing that adopts whole accurate hard car to become the style ferrules trap to be assembled is compared with existing rolling bearing, has higher sealed precision, bearing rigidity, antiwear property and bearing capacity, thereby has higher operational reliability and longer service life.
Simultaneously, the processing method of the rolling bearing of the whole accurate hard car moulding of lasso, the whole accurate hard car moulding of lasso, make and comprise that the main surface of raceway is all with same location benchmark, a surperficial time processing is shaped, even all main surfaces can accurate hard car moulding in the location that once is installed, when making raceway shape and performance simultaneously controlled, also have equipment and frock less investment, advantages such as efficient height, can select to adopt to do in addition and cut, half-dried cutting (micro cutting liquid is supplied with cooling or gas cooled), therefore laid good basis for the green manufacturing of a whole set of rolling bearing, simultaneously, the flexibility of the whole accurate hard car processing and forming of lasso also makes towards many kinds of different operating modes, personalized, the customization of high-performance rolling bearing becomes a reality.
Description of drawings
Fig. 1 decides curvature ditch shape raceway-single circular arc.
Fig. 2 variable curvature ditch shape raceway-single elliptic arc.
Fig. 3 variable curvature ditch shape raceway-peach shape.
The sharp peach shape of Fig. 4 variable curvature ditch shape raceway-go.
Fig. 5 variable curvature ditch shape raceway-bottom band U-shaped depot fat groove.
Fig. 6 variable curvature ditch shape raceway-bottom band circular arc depot fat groove.
Fig. 7 decides the non-ditch shape of curvature raceway-section straight line.
Fig. 8 decides the non-ditch shape of curvature raceway-three section straight line.
The non-ditch shape of Fig. 9 variable curvature raceway-logarithmic curve.
The non-ditch shape raceway of Figure 10-wedge shape raceway.
The single-row sealing four-point contact ball of the whole accurate hard car moulding of Figure 11 lasso.
Ball bearing outer ring-elliptic roller track among Figure 12 Figure 11.
Ball bearing inner race-elliptic roller track among Figure 13 Figure 11.
The single-row logarithm crowned raceway cylinder roller bearing of the whole accurate hard car moulding of Figure 14 lasso.
The outer ring of the cylinder roller bearing among Figure 15 Figure 14-logarithm crowned raceway.
The inner ring of the cylinder roller bearing among Figure 16 Figure 14-logarithm crowned raceway.
One row ball, the one row roller sealed bearing of the whole accurate hard car moulding of Figure 17 lasso.
The outer ring of the bearing among Figure 18 Figure 17-go sharp peach shape raceway, straight line raceway.
The inner ring of the bearing among Figure 19 Figure 17-go sharp peach shape raceway, straight line raceway.
Remove sharp peach shape raceway enlarged diagram among Figure 20 Figure 18 and Figure 19.
Code name explanation among the figure
Among Fig. 1,11 is the ball of diameter Db, and 12 is lasso, and 121 is single circular arc ditch shape raceway, and ball and raceway have circular solids stain among a nominal contact point such as the figure.
Among Fig. 2,21 is the ball of diameter Db, and 22 is lasso, and 221 is single elliptic arc ditch shape raceway, and elliptic arc place long axis of ellipse is 2a, and minor axis is 2b, and ball and raceway have circular solids stain among two nominal contact points such as the figure, and contact angle is α.
Among Fig. 3,31 is the ball of diameter Db, and 32 is lasso, and 321 is peach shape raceway right half part, and 322 is peach shape raceway left-half, and ball and raceway have circular solids stain among two nominal contact points such as the figure, and contact angle is α.
Among Fig. 4,41 is the ball of diameter Db, 42 is lasso, 421 for removing sharp peach shape raceway right half part, 422 for going sharp peach shape raceway left-half, and 423 for removing sharp peach shape raceway bottom circular arc, and left and right two semi arches of this circular arc and peach shape raceway are tangent, ball and raceway have circular solids stain among two nominal contact points such as the figure, and contact angle is α.
Fig. 5 is Fig. 3 peach shape raceway bottom band U-shaped depot fat groove, and 51 is the ball of diameter Db, and 52 is lasso, 521 is peach shape raceway right half part, and 522 is peach shape raceway left-half, and ball and raceway have circular solids stain among two nominal contact points such as the figure, contact angle is α, and 523 is U-shaped depot fat groove.
Fig. 6 is Fig. 3 peach shape raceway bottom band circular arc depot fat groove, 61 is the ball of diameter Db, 62 is lasso, 621 is peach shape raceway right half part, 622 is peach shape raceway left-half, ball and raceway have circular solids stain among two nominal contact points such as the figure, and contact angle is α, and 623 is circular arc depot fat groove.
Among Fig. 7,71 is roller, and 72 is lasso, and 721 is one section straight line raceway, and 722 is the raceway rib, and 723 is oil duct.
Among Fig. 8,81 is roller, and 82 is lasso, and 821 is three sections straight line raceways, and 822 is the raceway rib, and 823 is oil duct.
Among Fig. 9,91 is roller, and 92 is lasso, and 921 is the logarithm crowned raceway, and 922 is the raceway rib, and 923 is oil duct.
Among Figure 10,101 is cylindrical roller or the needle roller of diameter Db, and 102 is the unilateral bearing outer ring, and 1021 is one of them lozenges of outer ring raceway, 1022 is one of them wedge-shaped slot of outer ring raceway, and outer ring raceway is made up of some uniform lozenges and wedge-shaped slots along the circumferential direction.
Among Figure 11,111 is the outer ring, and 112 is inner ring, and 113 is ball, and 114 is retainer, and 115 is lubricating grease, and 116 is seal.
Among Figure 12,1111 is the outer ring outer round surface, and 1112 is the outer ring both ends of the surface, and 1113 is outer ring raceway, and its cross section is ellipse arc, and 1114 is the outer ring rib, and 1115 is the outer ring seal groove.
Among Figure 13,1121 is the inner ring internal circular surfaces, and 1122 is the inner ring both ends of the surface, and 1123 is inner ring raceway, and the cross section is ellipse arc, and 1124 is inner ring rib, and 1125 is the inner ring seal groove.
Among Figure 14,141 is the outer ring, and 142 is inner ring, and 143 is roller, and 144 is retainer.
Among Figure 15,1411 is the outer ring outer round surface, and 1412 is the outer ring both ends of the surface, and 1413 is outer ring raceway, and raceway cuts shape and is band convexity logarithmic curve.
Among Figure 16,1421 is the inner ring internal circular surfaces, and 1422 is the inner ring both ends of the surface, and 1423 is inner ring raceway, and raceway cuts shape and is band convexity logarithmic curve, and 1424 is the raceway rib, and 1425 is the raceway oil duct, and 1426 is inner ring rib.
Among Figure 17,171 is the outer ring, and 172 is inner ring, and 173 is ball, and 174 is roller, and 175 is ball row retainers, and 176 is the rows of rollers retainer, and 177 is lubricating grease, and 178 is seal.
Among Figure 18,1711 is the outer ring outer round surface, and 1712 is the outer ring both ends of the surface, and 1713 is outer ring ball row raceway, and the cross section is for going sharp peach shape, and 1714 is outer ring rows of rollers raceway (outer ring rib), and the cross section is straight line, and 1715 is seal groove.
Among Figure 19,1721 is inner ring rib (inner ring rows of rollers raceway 1724, cross section are straight line), and 1722 is the inner ring both ends of the surface, and 1723 is inner ring ball row raceways, and the cross section is for going sharp peach shape.
Among Figure 20, Db is ball diameter, and O is the ball center of circle, and O1 and O2 are respectively the center of circle of peach shape raceway right semi-circle arc and left semicircle arc, and R is the radius of peach shape raceway bottom rounding (removing point).
The specific embodiment
The processing method of the rolling bearing of the whole accurate hard car moulding of lasso of the present invention, replace grinding and even microstoning to make bearing ring with the hard car of precision, thereby a series of quality that the lasso grinding exists have been overcome, technology, efficient, cost, problems such as environment, at rolling element, lubricant, retainer is identical with seal and remain under the situation of better quality level, the rolling bearing that adopts whole accurate hard car method for processing forming to make is compared the rolling bearing that existing employing grinding processing method is made, and has higher running accuracy, sealed precision, operating reliability and longer service life.Simultaneously, the processing method of the rolling bearing of the whole accurate hard car moulding of lasso, the advantage of the processing and fabricating odds ratio of variable curvature ditch shape raceway and non-ditch shape raceway being decided curvature ditch shape raceway and non-ditch shape raceway is more obvious, this just makes, section shape of lasso raceway can be designed towards operating mode, as long as can design, just can come out by accurate hard car, therefore, under the hard Vehicle Processing method of precision, adopt the design of variable curvature raceway, will obviously improve the contact stress of rolling element and raceway, improve the contact stiffness of bearing, the stress of avoiding the roller end to contact with raceway is concentrated, all these all can further promote operational reliability and the service life of bearing.
After the whole accurate hard car moulding of lasso, if operating condition has higher requirement to the raceway roughness, can surpass lappingout, roll extrusion, tumbling or polishing processing to raceway.
Below in conjunction with accompanying drawing, describe the present invention in detail.
The processing method of the rolling bearing of embodiment 1, the whole accurate hard car moulding of a kind of lasso, as Figure 11-13, described rolling bearing is single-row sealing four-point contact ball, comprise inside and outside lasso 112,111, embed rolling element 113, retainer 114, lubricating grease 115 and seal 116 between outer ring raceway and the inner ring raceway, may further comprise the steps:
1) lasso processing comprises following operation:
01 preparations leave the inside and outside lasso 112 of semi-finished product, 111 of allowance,
The 02 inside and outside lassos 112 of semi-finished product, 111 that will leave allowance quench, tempering heat treatment,
03 carry out the accurate hard car moulding of integral body respectively with the inside and outside lasso 112,111 after the heat treatment,
2) bearing trap assembling with inner ring 112, the outer ring 111 and finished product rolling element 113 sorting traps after the whole accurate hard car moulding in the step 1) 03, and is finished the assembling of a whole set of bearing.
Undressed seal groove on the inside and outside lasso 112 of semi-finished product, 111, raceway of processing can be elliptic roller track or the single arc raceway similar with lasso finished product raceway shape on it.
The cover loop material adopts bearing steel GCr15, normal quenching, and tempering is then selected normal temperature tempering or high tempering according to the bearing working temperature, in any case the hardness after the tempering all can be more than HRC45.
After outer ring 111 and inner ring 112 and whole accurate hard car are shaped, comprise that the machining accuracy of roughness can reach the level of correct grinding, if according to the bearing operating condition, when need not behind the accurate hard car that raceway face done further microstoning, namely all reach the cutting requirement of bearing completed products lasso behind the accurate hard car; As need raceway face is made further ultraprecise and add man-hour, then will leave surplus during accurate hard car raceway, then by the further roughness of reduction raceway face of super lappingout, roll extrusion, tumbling or polishing.
After outer ring 111, inner ring 112, the ball 113 sorting traps, install retainer 114 additional and namely make open bearing, grease up 115 and seal 116 namely make the single-row sealing four-point contact ball of the whole accurate hard car moulding of lasso shown in Figure 11.
The processing method of the rolling bearing of embodiment 2, the whole accurate hard car moulding of a kind of lasso, as Figure 14-16, described rolling bearing is single-row logarithm crowned raceway cylinder roller bearing, comprise inside and outside lasso 142,141, embed rolling element 143, retainer 144 between outer ring raceway and the inner ring raceway, may further comprise the steps:
1) lasso processing comprises following operation:
01 preparations leave the inside and outside lasso 142 of semi-finished product, 141 of allowance,
The 02 inside and outside lassos 142 of semi-finished product, 141 that will leave allowance quench, tempering heat treatment,
03 carry out the accurate hard car moulding of integral body respectively with the inside and outside lasso 142,141 after the heat treatment,
2) bearing trap assembling with inner ring 142, the outer ring 141 and finished product cylindrical roller 143 sorting traps after the whole accurate hard car moulding in the step 1) 03, and is finished the assembling of a whole set of bearing.
Undressed oil duct on the inside and outside lasso 142 of semi-finished product, 141, raceway is processed as straight line on it.
The cover loop material adopts bearing steel GCr15, normal quenching, and tempering is then selected normal temperature tempering or high tempering according to the bearing working temperature, in any case the hardness after the tempering all can be more than HRC45.
After outer ring 141 and inner ring 142 whole accurate hard cars are shaped, comprise that the machining accuracy of roughness can reach the level of correct grinding, if according to the bearing operating condition, when need not behind the accurate hard car that raceway face done further microstoning, namely all reach the cutting requirement of bearing completed products lasso behind the accurate hard car; As need raceway face is made further ultraprecise and add man-hour, then will leave surplus during accurate hard car raceway, then by the further roughness of reduction raceway face of super lappingout, roll extrusion, tumbling or polishing.
To outer ring 141, inner ring 142 and cylindrical roller 143 sorting traps, install the single-row logarithm crowned raceway cylinder roller bearing that retainer 144 namely makes whole accurate hard car moulding shown in Figure 14 additional.
The processing method of the rolling bearing of embodiment 3, the whole accurate hard car moulding of a kind of lasso, as Figure 17-20, described rolling bearing is a row ball one row roller sealed bearing, comprise outer ring 171, inner ring (mandrel) 172, embed the ball 173 between the inside and outside circle ditch shape raceway, cylindrical roller 174, ball distance ring 175, roller retainer 176, lubricating grease 177 and the seal 178 between the non-ditch shape of the inside and outside circle of the embedding raceway, may further comprise the steps:
1) lasso processing comprises following operation:
01 preparations leave the inside and outside lasso 172 of semi-finished product, 171 of allowance,
The 02 inside and outside lassos 172 of semi-finished product, 171 that will leave allowance quench, tempering heat treatment,
03 carry out the accurate hard car moulding of integral body respectively with the inside and outside lasso 172,171 after the heat treatment,
2) bearing trap assembling with inner ring 172, the outer ring 171 and finished product ball 173, finished product roller 174 sorting traps after the whole accurate hard car moulding in the step 1) 03, and is finished the assembling of a whole set of bearing.
Undressed seal groove on the inside and outside lasso 172 of semi-finished product, 171, processing ditch shape raceway can be peach shape raceway or the circular arc raceway similar with lasso finished product raceway shape on it, the non-ditch shape of processing linear shape raceway on it.
Inner ring 172 whole accurate hard car moulding: at first with the accurate hard car external diameter surface (another part) in mandrel 172 external diameter surfaces (part) location, finally finish whole mandrel outer round surface 1721(straight line raceway face 1724) accurate hard car moulding, installation matching surface when using with bearing then-mandrel outer round surface 1721 is the location benchmark, and accurate hard car is gone out sharp peach shape raceway 1723 and Double End 1722 successively.
This bearing outer ring non-ditch shape raceway and the non-ditch shape of inner ring raceway, raceway face all are wherein a part of (sections) of its place lasso ditch shape raceway rib.
After outer ring 171 and inner ring 172 whole accurate hard cars are shaped, comprise that the machining accuracy of roughness can reach the level of correct grinding, if according to the bearing operating condition, when need not behind the accurate hard car that raceway face done further microstoning, namely all reach the cutting requirement of bearing completed products lasso behind the accurate hard car; As need wherein a row raceway or whole two row raceway face are made further ultraprecise and add man-hour, then will leave surplus during accurate hard car raceway, then by the further roughness of reduction raceway face of super lappingout, roll extrusion, tumbling or polishing.
After outer ring 171, inner ring 172, ball 173, the roller 174 sorting traps, install ball row retainer 175 and rows of rollers retainer 176 respectively additional and namely make open bearing, grease up 177 and seal 178 namely make a row ball one row roller sealed bearing of the whole accurate hard car moulding of lasso shown in Figure 17.
In the above-described embodiments, bearing outer ring and inner ring ditch shape raceway can be designed to decide arbitrarily curvature ditch shape raceway and variable curvature ditch shape raceway towards the bearing operating condition, and cross sectional shape includes but not limited to single circular arc, ellipse, hyperbola, parabola and composite curve, described composite curve comprises sharp peach shape and goes sharp peach shape, the depot fat groove can also be opened in the bottom of ditch shape raceway, and the accurate hard car forming method of these ditch shape raceways is identical or close with the forming method of the cited ditch shape of embodiment raceway.Ditch shape raceway adopts different raceways to cut shape, forms with ball that different contact forms, contact are counted thus, contact load and contact stiffness.Especially variable curvature ditch shape raceway, a lasso raceway can form 2 even more contact point with ball, because ball does not contact with the raceway bottom, the lubricating grease that is attached on the raceway bottom can not blown off by ball, thereby make the raceway bottom have the depot fat function, improved the lubricating life of bearing, the ditch shape raceway of bottom band depot fat groove, this effect can be more obvious; Owing to improved bearing radially, axially and the contact stiffness of angle, thereby dynamic seal (packing) precision and the dynamic load rating of bearing have further been improved, improve operational reliability and the service life of bearing, be particularly suitable for the relatively harsher silicone oil fan clutch bearing in automobile of operating condition, the automobile generating machine bearing, the automobile tension wheel shaft bearing, electromagnetic clutch bearing of automotive air conditioner, the wood processing machinery bearing, handrail elevator bearing etc. is operated in dust or medium invasion and attack environment, the outer ring rotation, belt drives, therefore the bigger grade of external load is to the sealed precision of bearing, rigidity, the occasion that bearing capacity and operational reliability are had relatively high expectations.
In the above-described embodiments, the non-ditch shape of bearing outer ring and inner ring raceway can be designed to decide arbitrarily curvature non-ditch shape raceway and the non-ditch shape of variable curvature raceway towards the bearing operating condition, and cross sectional shape includes but not limited to that single straight line, three sections straight lines, single orthodrome, logarithmic curve, hyperbola, two sections straight lines press from both sides one section circular arc, multi-section circular arc and composite curve; Also comprise wedge shape raceway and protruding amount for 0 to 0.5 millimeter convex raceway, the accurate hard car forming method of these non-ditch shape raceways is identical or close with the forming method of the cited non-ditch shape raceway of embodiment.Non-ditch shape raceway adopts different raceways to cut shape, forms different contact forms and distribution of contact form, contact load, contact stiffness with roller thus.Especially the convex raceway because the stress of having avoided the roller end to contact is concentrated, thereby has improved the stress state that contacts microcell, has improved the bearing capacity of bearing, has improved operational reliability and the service life of bearing.Being particularly suitable for operational reliabilities such as the relatively harsher high-speed precise machine tool main shaft roller bearing of operating condition, screw air compressor roller bearing requires than higher roller bearing.The accurate hard Vehicle Processing moulding of raceway makes the convex raceway that protruding amount is bigger, is 0.05 millimeter such as protruding amount (or convexity), can process easily, and this is inconceivable under super smart formation convexity process.
As can be seen, as long as operating mode needs, as long as be conducive to improve operational reliability and the service life of bearing, anyly decide curvature raceway, variable curvature raceway or even special-shaped raceway (as the wedge shape raceway of unidirectional self-lock bearing outer ring), all raceways that can design can accurate hard car moulding, and raceway grinding-shaping mode is demonstrated great superiority.
When track convex degree was big, during the sorting of bearing ring trap, the peak dot that should get crest curve was measured the raceway diameter, and to outer ring raceway, this is minimum raceway diameter; To inner ring raceway, this is maximum raceway diameter.
Multirow bearing, no matter be the multiple row ball bearing, multiple row roller bearing or even multiple row ball and roller are also deposited bearing, the accurate hard car forming method of its raceway and embodiment are same or similar, but, to multirow bearing, all row raceways on the same lasso, all can accurate hard car moulding in the location that once is installed, guaranteed the mutual alignment precision of all row raceways, raceway grinding advantage is more obvious relatively, especially big and (2) ball row and rows of rollers and deposit bearing to (1) different lines raceway gap ratio, one-time positioning is installed, and the whole grindings of the raceway on the same lasso may be come out hardly.
The whole accurate hard car moulding of lasso can reach the accuracy class of correct grinding, therefore, most of operating mode bearing rings of fighting to the finish, the lasso of whole accurate hard car moulding need not to remake further ultraprecise processing, but to some special operation condition, need lower surface roughness, during the accurate hard car of raceway, can stay suitable allowance, wait accurate hard car after, again raceway is surpassed lappingout, roll extrusion, tumbling, the processing of ultraprecises such as polishing, even if but super lappingout, also different with the super lappingout of prior art, the super lappingout of prior art is in order to eliminate the grinding defective, to comprise the grinding roughness, grinding skin etc., because the grinding race radiating condition is relatively poor, therefore cause grinding skin heavier, darker, therefore, grinding skin be removed, just need very big super smart amount, as reaching 20 microns, this involves efficient and cost on the one hand, and excessive on the other hand super smart amount also is a kind of destruction that the raceway preferably that crush grinding obtains is cut shape; And accurate hard car is because radiating condition is better, raceway cutting metamorphic layer is thinner relatively, and therefore, super smart amount reduces 1/3 to 1/2 after the comparable existing technology grinding of super smart amount that needs, both improved efficient, and made the super smart raceway that the hard car of precision is obtained cut the destruction control of shape in certain degree again.
Because prior art bearing ring raceway adopts grinding-shaping, therefore, in fact the raceway oil duct is exactly the wheel grinding grinding undercut, under the whole hard car method for processing forming of lasso of the present invention, the wheel grinding grinding undercut is no longer necessary, and oil duct can be cancelled or conveniently designing according to the hard Vehicle Processing of precision.
Embodiment has enumerated ball bearing and ball row raceway, cylindrical bearing and cylinder row raceway, but the processing method of the rolling bearing of the whole accurate hard car moulding of lasso never is confined to raceway and the bearing of these types, existing existence and all raceways that occur from now on, all rolling bearing lassos, all rolling bearings, processing method of the present invention is all suitable fully, specific implementation method is identical or close with the implementation method that embodiment provides, therefore, the bearing of processing method of the present invention and processing method making has according to this been contained all types, structure, size, precision, the rolling bearing of lubricating system.The inside and outside lasso semi-finished product of embodiment middle (center) bearing adopt prior art to comprise that methods such as soft car, buffing, cold rolling expansion, powder metallurgy make; The same prior art of preparation method of other part beyond the lasso.
The whole accurate hard car method for processing forming of lasso is not only applicable to the steel bearing ring, is fit to the bearing ring that is made by engineering ceramics, engineering plastics, carbon graphite, composite simultaneously.
The processing method of the rolling bearing of the whole accurate hard car moulding of lasso of the present invention, the general numerically controlled lathe that adopts, adopt the DRY CUTTING of no cutting fluid or have the wet type of cutting fluid to cut, cutter material can be selected cubic boron nitride, polycrystalline cubic boron nitride, pottery, diamond, carbide alloy etc. for use.
The processing method of the rolling bearing of the whole accurate hard car moulding of lasso of the present invention, the accurate hard car moulding of the whole employing of lasso, overcome the series of technical that lasso grinding and microstoning moulding bring, quality problems, efficiency and environmental issue: grinding burn, grinding skin, the grinding skin tension, the raceway shape that the grinding of super smart destruction has obtained, emery wheel and the oilstone cast scuffing raceway face of running over and injure, each surperficial mutual alignment precision is not high enough, the seal groove heat treatment deformation, variable curvature raceway and special-shaped raceway are difficult to processing, efficient is low, the cost height, all process steps all needs cutting fluid, all multiple operation lasso circulations are easy to generate corrosion and bump injury etc., have opened up the new outlet of bearing sleeve processing shaping.Single lifting with regard to the bearing ring service behaviour, the whole accurate hard car moulding of lasso, make that shape and the performance of machined surface are all controlled, guaranteed the integrality of surface to be machined, belong to the antifatigue manufacturing, therefore, the rolling bearing of the whole accurate hard car moulding of lasso, with respect to existing technology rolling bearing have running accuracy height, sealed precision height, bearing capacity is strong, wear-resistant and some row advantages such as antifatigue, have higher operational reliability and longer service life, its invention is made has practical meaning in engineering very much.
More than disclosed only be several specific embodiments of the application, but the application is not limited thereto, any those skilled in the art can think variation, all should drop in the application's the protection domain.
Claims (11)
1. the processing method of the rolling bearing of the whole accurate hard car moulding of a lasso, described rolling bearing comprises lasso, embeds the rolling element between outer ring raceway and the inner ring raceway, it is characterized in that may further comprise the steps:
1) lasso processing comprises following operation:
01 preparations leave the inside and outside lasso of semi-finished product of allowance,
02 will leave the inside and outside ring quenching of semi-finished product, the tempering heat treatment of allowance,
03 carry out the accurate hard car moulding of integral body respectively with the inside and outside lasso after the heat treatment,
2) bearing trap assembling with inner ring, outer ring and the finished product rolling element sorting trap after the whole accurate hard car moulding in the step 1) 03, and is finished the assembling of a whole set of bearing.
2. the processing method of rolling bearing as claimed in claim 1 is characterized in that: the whole accurate hard car moulding described in the step 1) 03 comprises accurate hard car datum level, reaches the requirement of bearing completed products ferrule design; Be as the criterion with described datum level then, the location that is installed, accurate hard all the other positions of car reach the requirement of bearing completed products ferrule design.
3. the processing method of rolling bearing as claimed in claim 2 is characterized in that: described datum level is the installation matching surface of inside and outside lasso when using.
4. as the processing method of claim 2 or 3 described rolling bearings, it is characterized in that: described all the other positions comprise raceway, raceway rib, raceway oil duct, lasso rib and the seal groove of lasso.
5. the processing method of rolling bearing as claimed in claim 4, it is characterized in that: the raceway of described lasso comprises decides curvature ditch shape raceway, and its cross sectional shape comprises single circular arc; Variable curvature ditch shape raceway, its cross sectional shape comprises ellipse, hyperbola, parabola and composite curve, described composite curve comprises sharp peach shape and goes sharp peach shape; And the ditch shape raceway of bottom band depot fat groove.
6. the processing method of rolling bearing as claimed in claim 4, it is characterized in that: the raceway of described lasso comprises decides the non-ditch shape of curvature raceway, and its cross sectional shape comprises single straight line, three sections straight lines and single orthodrome; The non-ditch shape of variable curvature raceway, its cross sectional shape comprise logarithmic curve, hyperbola, two sections straight line folders one section circular arc, multi-section circular arc and composite curve; Also comprise the wedge shape raceway formed by some lozenges and wedge-shaped slot and protruding amount for 0 to 0.5 millimeter convex raceway.
7. the processing method of rolling bearing as claimed in claim 1, it is characterized in that: described cover loop material comprises bearing steel material, engineering ceramics, engineering plastics, carbon graphite and composite.
8. the processing method of rolling bearing according to claim 1 is characterized in that: in described step 1) 01, the inside and outside lasso semi-finished product of described bearing adopt prior art to comprise that soft car, buffing, cold rolling expansion or powder metallurgy process make.
9. the processing method of rolling bearing according to claim 1, it is characterized in that: described step 2), when the sorting trap, variable curvature or bottom are opened the ditch shape raceway of depot fat groove, ball and outer ring raceway or inner ring raceway are at 2 when contacting, contact point is not in lasso raceway bottom, the diameter at contact point place directly related with the design bearing play on the lasso raceway is converted into the raceway base diameter and with it as the trap size, carry out the sorting trap of lasso and ball, realize the control to bearing clearance.
10. the processing method of rolling bearing as claimed in claim 1, it is characterized in that: also comprise step 1) 04 after described step 1) 03, described step 1) 04 is that raceway and raceway rib internal, outer collar surpass lappingout, roll extrusion, tumbling or polishing processing.
11. be suitable for the rolling bearing with the described method processing of claim 1, it is characterized in that the groove-section shape of the inside and outside lasso of described rolling bearing comprises: decide curvature and variable curvature ditch shape raceway; The bottom is with the ditch shape raceway of depot fat groove and is decided curvature and the non-ditch shape of variable curvature raceway; Also comprise wedge shape raceway and convex raceway.
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| CN2013102611005A CN103331456A (en) | 2013-06-26 | 2013-06-26 | Machining method of rolling bearing formed by whole and precise hard turning and molding of sleeve ring |
| CN201410020225.3A CN103737024B (en) | 2013-06-26 | 2014-01-16 | The rolling bearing of the accurate hard car molding of lasso and processing method thereof |
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| CN2013102611005A CN103331456A (en) | 2013-06-26 | 2013-06-26 | Machining method of rolling bearing formed by whole and precise hard turning and molding of sleeve ring |
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| CN201410020225.3A Active CN103737024B (en) | 2013-06-26 | 2014-01-16 | The rolling bearing of the accurate hard car molding of lasso and processing method thereof |
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| EP1486289A3 (en) * | 2003-06-12 | 2005-03-09 | Koyo Seiko Co., Ltd. | Method of processing antifriction bearing unit for wheel |
| CN101187400B (en) * | 2003-09-30 | 2011-06-08 | Ntn株式会社 | Cylindrical roller bearing |
| JP4556443B2 (en) * | 2004-02-23 | 2010-10-06 | 株式会社ジェイテクト | Manufacturing method of vehicle bearing device |
| CN102135131B (en) * | 2006-12-20 | 2013-03-13 | Ntn株式会社 | Hub unit |
| CN102900755B (en) * | 2012-10-15 | 2016-12-21 | 上海斐赛轴承科技有限公司 | Dust seal effect enhancement mode oil-free lubrication rolling bearing and manufacture method |
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| CN103737024B (en) | 2016-08-17 |
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