CN105782237A - Bi-inner-ring and double-row angular contact thrust ball bearing and preloading interval optimization method thereof - Google Patents
Bi-inner-ring and double-row angular contact thrust ball bearing and preloading interval optimization method thereof Download PDFInfo
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- CN105782237A CN105782237A CN201610325283.6A CN201610325283A CN105782237A CN 105782237 A CN105782237 A CN 105782237A CN 201610325283 A CN201610325283 A CN 201610325283A CN 105782237 A CN105782237 A CN 105782237A
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- raceway groove
- inner ring
- ring
- bearing
- end surface
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
- F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
- F16C19/181—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
- F16C19/183—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
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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
- F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
- F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
- F16C2240/46—Gap sizes or clearances
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The embodiment of the invention discloses a preloading interval optimization method for a bi-inner-ring and double-row angular contact thrust ball bearing. The method comprises the steps that axial play Ga of an outer ring, inner rings and steel balls after fitting is measured; axial pretightening force Fao with corresponding size is exerted on the inner rings according to the requirement on actual use loads; the polishing amount delta (please see the equation in the specification) of the narrow end faces of the inner rings is calculated, wherein preloading interval delta meets the equation in the specification, and the narrow end faces of the two inner rings are polished respectively according to the polishing amount delta. The embodiment of the invention further discloses the bi-inner-ring double-row contact angular contact thrust ball bearing. The preloading interval delta of the bearing is optimized through the preloading interval optimization method, in the actual use, only a locking nut is required to exert axial pretightening force Fao on the inner rings, then, the preloading interval delta can be eliminated and the bearing can acquire a preloading value recommended by the design so that the requirement on the actually needed load can be met precisely, and meantime high rigidity can be acquired.
Description
Technical field:
The present invention relates to a kind of bearing, especially a kind of be equivalent to the double; two inner ring double row angular contact thrust ball bearing of " DB " type configuration and the pre-load clearance optimization method thereof that the two single-row angular contact thrust ball bearings of set are installed back-to-back.
Background technology:
The double, two inner ring double row angular contact thrust ball bearing of existing " DB " type configuration, it at least includes outer ring, two inner rings, and two row steel balls, the inner surface of described outer ring is axially spaced offers raceway groove in two, the outer surface of described inner ring offers the outer raceway groove corresponding with described interior raceway groove, the two ends, axial left and right of described inner ring are respectively provided with wide end surface and narrow end surface, two inner rings are sheathed in outer ring vertically side by side, and two the narrow end surface of inner ring be oppositely arranged and leave pre-load clearance δ, described two row steel balls are respectively arranged in described two between raceway groove and outer raceway groove, contact angle is formed between steel ball and interior raceway groove and outer raceway groove.But, this existing bearing, the not optimized design of its pre-load clearance δ, it is impossible to precisely mate actually required magnitude of load and require and obtain higher rigidity.
Summary of the invention:
The not optimized design of pre-load clearance δ for overcoming above-mentioned existing bearing, cannot precisely mating the problem that actually required magnitude of load requires and obtains higher rigidity, the embodiment of the present invention provides the pre-load clearance optimization method of a kind of pair of inner ring double row angular contact thrust ball bearing on the one hand.
The pre-load clearance optimization method of double, two inner ring double row angular contact thrust ball bearings, described bearing at least includes outer ring, two inner rings, and two row steel balls, the inner surface of described outer ring is axially spaced offers raceway groove in two, the outer surface of described inner ring offers the outer raceway groove corresponding with described interior raceway groove, the two ends, axial left and right of described inner ring are respectively provided with wide end surface and narrow end surface, two inner rings are sheathed in outer ring vertically side by side, and two the narrow end surface of inner ring be oppositely arranged and leave pre-load clearance δ, described two row steel balls are respectively arranged in described two between raceway groove and outer raceway groove, contact angle is formed between steel ball and interior raceway groove and outer raceway groove；Described pre-load clearance optimization method includes:
Measure the end-play Ga after described outer ring, inner ring and steel ball trap；
The axial pre tightening force Fao to the corresponding size of inner ring applying is required according to the magnitude of load that design is recommended；
Calculating reconditioning quality Δ=Ga/2+δ/2 of inner ring narrow end surface, wherein, described pre-load clearance δ meets:Described B is the total curvature of bearing, described α0For not applying the contact angle of axial pre tightening force, described αpFor the contact angle after applying axial pre tightening force Fao, Z is steel ball sum, DWFor steel ball size, K is the axial deformation constant of bearing；
Narrow end surface according to reconditioning quality Δ reconditioning two inner ring respectively.
On the other hand, the embodiment of the present invention additionally provides a kind of double; two inner ring double row angular contact thrust ball bearing.
Double, two inner ring double row angular contact thrust ball bearings, it at least includes outer ring, two inner rings, and two row steel balls, the inner surface of described outer ring is axially spaced offers raceway groove in two, the outer surface of described inner ring offers the outer raceway groove corresponding with described interior raceway groove, the two ends, axial left and right of described inner ring are respectively provided with wide end surface and narrow end surface, two inner rings are sheathed in outer ring vertically side by side, and two the narrow end surface of inner ring be oppositely arranged and leave pre-load clearance δ, described two row steel balls are respectively arranged in described two between raceway groove and outer raceway groove, contact angle is formed between steel ball and interior raceway groove and outer raceway groove；Described bearing assembles after pre-load clearance optimization method processing described above.
Another further aspect, the embodiment of the present invention additionally provides a kind of double; two inner ring double row angular contact thrust ball bearing.
Double, two inner ring double row angular contact thrust ball bearings, it at least includes outer ring, two inner rings, and two row steel balls, the inner surface of described outer ring is axially spaced offers raceway groove in two, the outer surface of described inner ring offers the outer raceway groove corresponding with described interior raceway groove, the two ends, axial left and right of described inner ring are respectively provided with wide end surface and narrow end surface, two inner rings are sheathed in outer ring vertically side by side, and two the narrow end surface of inner ring be oppositely arranged and leave pre-load clearance δ, described two row steel balls are respectively arranged in described two between raceway groove and outer raceway groove, contact angle is formed between steel ball and interior raceway groove and outer raceway groove；Described pre-load clearance δ meets:Described B is the total curvature of bearing, described α0For not applying the contact angle of axial pre tightening force, described αpFor the contact angle after applying axial pre tightening force Fao, Z is steel ball sum, DWFor steel ball size, K is the axial deformation constant of bearing.
The embodiment of the present invention, the pre-load clearance δ of bearing designs through pre-load clearance optimization method optimization, when actually used, only need to apply axial pre tightening force Fao by locking nut to inner ring, pre-load clearance δ can be eliminated and make bearing obtain the pre-load value that design is recommended, precisely to mate actually required magnitude of load requirement, meanwhile, higher rigidity can be obtained.
Accompanying drawing illustrates:
In order to be illustrated more clearly that the technical scheme in the embodiment of the present invention, below the accompanying drawing used required during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 be the present invention bearing (eliminating left side inner ring) without pre-load clearance optimization method process with the trap schematic diagram before removing reconditioning quality Δ；
Fig. 2 is the bearing of present invention schematic diagram before not applying any axial pre tightening force；
Fig. 3 is the bearing of present invention schematic diagram after applying axial pre tightening force Fao.
Detailed description of the invention:
In order to make technical problem solved by the invention, technical scheme and beneficial effect clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.
Such as Fig. 1, shown in Fig. 2, a kind of pre-load clearance optimization method of pair of inner ring double row angular contact thrust ball bearing, described bearing at least includes outer ring 1, two inner rings 2, and two row steel balls 3, the inner surface of described outer ring 1 is axially spaced offers raceway groove in two, the outer surface of described inner ring 2 offers the outer raceway groove corresponding with described interior raceway groove, the two ends, axial left and right of described inner ring 2 are respectively provided with wide end surface and narrow end surface, two inner rings 2 are sheathed in outer ring 1 vertically side by side, and two the narrow end surface of inner ring 2 be oppositely arranged and leave pre-load clearance δ, described two row steel balls 3 are respectively arranged in described two between raceway groove and outer raceway groove, contact angle is formed between steel ball 3 and interior raceway groove and outer raceway groove；Described pre-load clearance optimization method includes:
Measure the end-play Ga after described outer ring 1, inner ring 2 and steel ball 3 trap；In the present embodiment, described end-play Ga can be measured by play instrument.
Magnitude of load according to design recommendation requires to apply the axial pre tightening force Fao of corresponding size to inner ring 2；
Calculating reconditioning quality Δ=Ga/2+δ/2 of inner ring 2 narrow end surface, wherein, described pre-load clearance δ meets:Described B is the total curvature of bearing, described α0For not applying the contact angle of axial pre tightening force, as in figure 2 it is shown, described αpFor applying the contact angle after axial pre tightening force Fao, as it is shown on figure 3, Z is steel ball sum, DWFor steel ball size, K is the axial deformation constant of bearing；
Narrow end surface according to reconditioning quality Δ reconditioning two inner ring 2 respectively, as shown in Figure 1.
The embodiment of the present invention, bearing is after the pre-load clearance optimization method of the present invention is optimized design, described end-play Ga is completely eliminated, as shown in Figure 2 and Figure 3, when actually used, only need to apply axial pre tightening force Fao by locking nut (not shown) to inner ring 2, pre-load clearance δ can be eliminated and make bearing obtain the pre-load value that design is recommended, precisely to mate actually required magnitude of load requirement, meanwhile, higher rigidity can be obtained.
As shown in Figure 2, a kind of double, two inner ring double row angular contact thrust ball bearing, it at least includes outer ring 1, two inner rings 2, and two row steel balls 3, the inner surface of described outer ring 1 is axially spaced offers raceway groove in two, the outer surface of described inner ring 2 offers the outer raceway groove corresponding with described interior raceway groove, the two ends, axial left and right of described inner ring 2 are respectively provided with wide end surface and narrow end surface, two inner rings 2 are sheathed in outer ring 1 vertically side by side, and two the narrow end surface of inner ring 2 be oppositely arranged and leave pre-load clearance δ, described two row steel balls 3 are respectively arranged in described two between raceway groove and outer raceway groove, contact angle is formed between steel ball 3 and interior raceway groove and outer raceway groove；Described bearing assembles after pre-load clearance optimization method processing described above.
The embodiment of the present invention, bearing assembles after pre-load clearance optimization method optimization designs, as shown in Figure 2 and Figure 3, when actually used, only need to apply axial pre tightening force Fao by locking nut (not shown) to inner ring 2, pre-load clearance δ can be eliminated and make bearing obtain the pre-load value that design is recommended, precisely to mate actually required magnitude of load requirement, meanwhile, higher rigidity can be obtained.
As shown in Figure 2, a kind of double, two inner ring double row angular contact thrust ball bearing, it at least includes outer ring 1, two inner rings 2, and two row steel balls 3, the inner surface of described outer ring 1 is axially spaced offers raceway groove in two, the outer surface of described inner ring 2 offers the outer raceway groove corresponding with described interior raceway groove, the two ends, axial left and right of described inner ring 2 are respectively provided with wide end surface and narrow end surface, two inner rings 2 are sheathed in outer ring 1 vertically side by side, and two the narrow end surface of inner ring 2 be oppositely arranged and leave pre-load clearance δ, described two row steel balls 3 are respectively arranged in described two between raceway groove and outer raceway groove, contact angle is formed between steel ball and interior raceway groove and outer raceway groove；Described pre-load clearance δ meets:Described B is the total curvature of bearing, described α0For not applying the contact angle of axial pre tightening force, as in figure 2 it is shown, described αpFor applying the contact angle after axial pre tightening force Fao, as it is shown on figure 3, Z is steel ball sum, DWFor steel ball size, K is the axial deformation constant of bearing.
The embodiment of the present invention, the pre-load clearance δ of bearing meets:As shown in Figure 2 and Figure 3, when actually used, only need to apply axial pre tightening force Fao by locking nut (not shown) to inner ring 2, pre-load clearance δ can be eliminated and make bearing obtain the pre-load value that design is recommended, precisely to mate actually required magnitude of load requirement, meanwhile, higher rigidity can be obtained.
One or more embodiments provided in conjunction with particular content are provided, do not assert that specific embodiment of the invention is confined to these explanations.All approximate with the method for the present invention, structure etc., identical, or for making some technology deduction or replace under present inventive concept premise, protection scope of the present invention all should be considered as.
Claims (3)
1. the pre-load clearance optimization method of pair inner ring double row angular contact thrust ball bearing, described bearing at least includes outer ring, two inner rings, and two row steel balls, the inner surface of described outer ring is axially spaced offers raceway groove in two, the outer surface of described inner ring offers the outer raceway groove corresponding with described interior raceway groove, the two ends, axial left and right of described inner ring are respectively provided with wide end surface and narrow end surface, two inner rings are sheathed in outer ring vertically side by side, and two the narrow end surface of inner ring be oppositely arranged and leave pre-load clearance δ, described two row steel balls are respectively arranged in described two between raceway groove and outer raceway groove, contact angle is formed between steel ball and interior raceway groove and outer raceway groove；It is characterized in that, described pre-load clearance optimization method includes:
Measure the end-play Ga after described outer ring, inner ring and steel ball trap；
The axial pre tightening force Fao to the corresponding size of inner ring applying is required according to the magnitude of load that design is recommended；
Calculating reconditioning quality Δ=Ga/2+δ/2 of inner ring narrow end surface, wherein, described pre-load clearance δ meets:
Described B is the total curvature of bearing, described α0For not applying the contact angle of axial pre tightening force, described αpFor the contact angle after applying axial pre tightening force Fao, Z is steel ball sum, DWFor steel ball size, K is the axial deformation constant of bearing；
Narrow end surface according to reconditioning quality Δ reconditioning two inner ring respectively.
2. pair inner ring double row angular contact thrust ball bearing, it at least includes outer ring, two inner rings, and two row steel balls, the inner surface of described outer ring is axially spaced offers raceway groove in two, the outer surface of described inner ring offers the outer raceway groove corresponding with described interior raceway groove, the two ends, axial left and right of described inner ring are respectively provided with wide end surface and narrow end surface, two inner rings are sheathed in outer ring vertically side by side, and two the narrow end surface of inner ring be oppositely arranged and leave pre-load clearance δ, described two row steel balls are respectively arranged in described two between raceway groove and outer raceway groove, contact angle is formed between steel ball and interior raceway groove and outer raceway groove；It is characterized in that, described bearing assembles after the pre-load clearance optimization method described in claim 1 is processed.
3. pair inner ring double row angular contact thrust ball bearing, it at least includes outer ring, two inner rings, and two row steel balls, the inner surface of described outer ring is axially spaced offers raceway groove in two, the outer surface of described inner ring offers the outer raceway groove corresponding with described interior raceway groove, the two ends, axial left and right of described inner ring are respectively provided with wide end surface and narrow end surface, two inner rings are sheathed in outer ring vertically side by side, and two the narrow end surface of inner ring be oppositely arranged and leave pre-load clearance δ, described two row steel balls are respectively arranged in described two between raceway groove and outer raceway groove, contact angle is formed between steel ball and interior raceway groove and outer raceway groove；It is characterized in that, described pre-load clearance δ meets:Described B is the total curvature of bearing, described α0For not applying the contact angle of axial pre tightening force, described αpFor the contact angle after applying axial pre tightening force Fao, Z is steel ball sum, DWFor steel ball size, K is the axial deformation constant of bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610325283.6A CN105782237B (en) | 2016-05-17 | 2016-05-17 | Double inner ring double row angular contact thrust ball bearings and its pre-load clearance optimization method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610325283.6A CN105782237B (en) | 2016-05-17 | 2016-05-17 | Double inner ring double row angular contact thrust ball bearings and its pre-load clearance optimization method |
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| CN105782237A true CN105782237A (en) | 2016-07-20 |
| CN105782237B CN105782237B (en) | 2018-10-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110039256A (en) * | 2018-01-16 | 2019-07-23 | 洛阳轴承研究所有限公司 | A kind of the bulge quantity technique optimization method and its device of bearing |
| CN113294433A (en) * | 2021-05-06 | 2021-08-24 | 洛阳轴承研究所有限公司 | Thrust bearing group for screw drill and grinding method thereof |
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Cited By (3)
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| CN113294433A (en) * | 2021-05-06 | 2021-08-24 | 洛阳轴承研究所有限公司 | Thrust bearing group for screw drill and grinding method thereof |
| CN113294433B (en) * | 2021-05-06 | 2023-08-11 | 洛阳轴承研究所有限公司 | Thrust bearing group for screw drilling tool and grinding method thereof |
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| CN105782237B (en) | 2018-10-09 |
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