CN209638376U - It is a kind of for adjusting the waveform spacer of bearing pre-fastening - Google Patents
It is a kind of for adjusting the waveform spacer of bearing pre-fastening Download PDFInfo
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- CN209638376U CN209638376U CN201920161044.0U CN201920161044U CN209638376U CN 209638376 U CN209638376 U CN 209638376U CN 201920161044 U CN201920161044 U CN 201920161044U CN 209638376 U CN209638376 U CN 209638376U
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Abstract
The utility model discloses a kind of for adjusting the waveform spacer of bearing pre-fastening, and the axial ends of the waveform spacer is respectively equipped with one section of major diameter vertical wall section, and the corrugated portion of outwardly convex is equipped between two sections of major diameter vertical wall sections；It is equipped with one section of path vertical wall section in the axial outer end of wherein one section of major diameter vertical wall section, is connected between the path vertical wall section and major diameter vertical wall section along axial for arc transition；The axial cross section shape of the corrugated portion is the circular arc cone angle shape of outwardly convex, and the axial ends of the corrugated portion is connect respectively with the major diameter vertical wall section of two sides with uniform circular arcs shape transition.The utility model makes it generate irreversible plastic deformation using the distinctive mechanical characteristic of waveform spacer, to eliminate due to part processing, assembly bring scale error, bearing pre-fastening is set to reach specified value, to achieve the purpose that improve production efficiency, reduce operator's labor intensity.
Description
Technical field
The utility model belongs to component of machine mounting technology field, and in particular to a kind of for adjusting bearing pre-fastening
Waveform spacer is particularly suitable for the tapered roller bearing pretightning force that adjustment pairing uses.
Background technique
Rolling bearing relies on being in rolling contact to support driving parts between main element, therefore has that frictional resistance is small, function
The advantages that rate consumes less, starting is easy.In order to improve the running accuracy of bearing, increases the rigidity of bearing arrangement, reduce machine and exist
The vibration of axis when work, scene is usually using the rolling bearing pre-tightened.So-called bearing pre-tightened is exactly during installation using certain
Method generates in the bearing of pairing and keeps certain axial force, to eliminate the axial gap in bearing, and in rolling element and
Inside and outside circle contact position generates initial set.When pre- next bearing is by service load, inside and outside circle it is radial and axially opposing
Amount of movement is greatly reduced than the bearing not pre-tightened.
In the related prior art, the method for the tapered roller bearing pretightning force that adjustment pairing uses is mainly in circular cone
Rigid spacer is installed between roller bearing, adjusts bearing pre-fastening by choosing to install the method for adjustment spacer thickness.Due to part
Processing, rigging error, frequently result in and need to be chosen over multiple adjustment spacer thickness and can just bearing pre-fastening be made to reach
Acceptability limit, the problems such as will lead to low production efficiency, labor intensity in this way, make operator generate complaint.
Summary of the invention
For above-mentioned defect existing in the prior art, the utility model provides a kind of for adjusting bearing pre-fastening
Waveform spacer makes it generate irreversible plastic deformation using the distinctive mechanical characteristic of waveform spacer, to eliminate due to zero
Part processing, assembly bring scale error, make bearing pre-fastening reach specified value, improve production efficiency to reach, reduce behaviour
The purpose of authors' labor intensity.In conjunction with Figure of description, the technical solution of the utility model is as follows:
It is a kind of for adjusting the waveform spacer of bearing pre-fastening, the axial ends of the waveform spacer is respectively equipped with one section big
Diameter vertical wall section 2 is equipped with the corrugated portion 3 of outwardly convex between two sections of major diameter vertical wall sections 2；
One section of path vertical wall section 1, path straight wall portion are equipped in the axial outer end of wherein one section of major diameter vertical wall section 2
Divide between 1 and major diameter vertical wall section 2 and is connected along axial for arc transition；
The axial cross section shape of the corrugated portion 3 is the circular arc cone angle shape of outwardly convex, the axial direction of the corrugated portion 3
Both ends are connect respectively with the major diameter vertical wall section 2 of two sides with uniform circular arcs shape transition.
Further, the outer diameter of the major diameter vertical wall section 2 is the 1-1.5 of the outer diameter of path vertical wall section 1
Times；
Further, the axial overall length of the major diameter vertical wall section 2 is the 4- of the axial overall length of path vertical wall section 1
6 times, wherein the axial overall length of the major diameter vertical wall section 2 refers to the sum of axial length of both ends major diameter vertical wall section 2, wave
The summation of the axial length of transition arc, institute between the axial length and major diameter vertical wall section 2 and corrugated portion 3 of line part 3
The axial overall length for stating path vertical wall section 1 refers to the axial length and path vertical wall section 1 and major diameter of path vertical wall section 1
The summation of the axial length of transition arc between vertical wall section 2；
Further, the corresponding angle of taper of outer wall of the circular arc cone angle of 3 axial cross section of corrugated portion be 10 °-
45 °, the radius of the cone angle top outer wall circular arc of the circular arc cone angle is 3mm-15mm；
Further, the arc radius of transition position is between the corrugated portion 3 and the major diameter vertical wall section 2 of axial ends
3mm-10mm；
Further, the path vertical wall section 1, major diameter vertical wall section 2, corrugated portion 3, path vertical wall section 1 and big
The wall thickness of transition portion is between transition and major diameter vertical wall section 2 and corrugated portion 3 between diameter vertical wall section 2
1.5mm-3.5mm。
Compared with prior art, the utility model has the beneficial effects that:
The mechanical characteristic that waveform spacer described in the utility model is straight using its plastically deforming area curve, that is, be plastically deformed
In the case that area's pressure value is approximately equal, the big feature in deformation values section, to eliminate due to part processing, assembly bring ruler
Very little error, makes bearing pre-fastening reach specified value, to achieve the purpose that improve production efficiency, reduce operator's labor intensity.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of waveform spacer described in the utility model；
Fig. 2 is the pressure-deformation curve schematic diagram of waveform spacer described in the utility model；
Fig. 3 is the assembling structure schematic diagram of waveform spacer described in the utility model.
In figure:
1- path vertical wall section, 2- major diameter vertical wall section, 3- corrugated portion,
4- little-end bearing inner ring roller assembly, 5- little-end bearing outer ring, 6- big-end bearing outer ring,
7- big-end bearing inner ring roller assembly；
Specific embodiment
For the technical solution of the utility model and its brought beneficial effect is further described, in conjunction with Figure of description,
Specific embodiment of the present utility model is as follows:
As shown in Figure 1, the utility model discloses a kind of for adjusting the waveform spacer of bearing pre-fastening, the waveform every
Set generally sleeve shaped, is respectively equipped with one section of major diameter vertical wall section 2 along the axial ends of waveform spacer, in two sections of major diameter straight wall portions
Divide between 2 and be equipped with the corrugated portion 3 of outwardly convex, wherein two sections of major diameter vertical wall sections 2 are along axial straight tube knot
Structure；Wherein the axial outer end of one section of major diameter vertical wall section 2 is equipped with one section of path vertical wall section 1, and the path vertical wall section 1 is edge
Axial straight tube structure connects between the path vertical wall section 1 and major diameter vertical wall section 2 along axial for arc transition, described
1 outer diameter of path vertical wall section is smaller, for matching installation, 2 outer diameter of major diameter vertical wall section with little-end bearing assembly
Size is larger, for matching installation with big-end bearing assembly；Corrugated portion 3 between two sections of major diameter vertical wall sections 2 is
Radially raised circular arc corrugated, i.e. the axial cross section shape of corrugated portion 3 are the circular arc cone angle of outwardly convex, described
The axial ends of corrugated portion 3 is connect respectively with the major diameter vertical wall section 2 of two sides with uniform circular arcs shape transition.
As shown in Figure 1, in the waveform spacer described in the utility model for adjusting bearing pre-fastening, each section it is specific
Structure size range is as follows:
The outer diameter D2 of the major diameter vertical wall section 2 is 1-1.5 times of the outer diameter D1 of path vertical wall section 1；
The axial overall length H1 of the major diameter vertical wall section 2 is 4-6 times of the axial overall length H2 of path vertical wall section 1,
Wherein, the axial overall length H1 of the major diameter vertical wall section 2 refers to the sum of axial length of both ends major diameter vertical wall section 2, ripple
The summation of the axial length of transition arc, described between the axial length and major diameter vertical wall section 2 and corrugated portion 3 of part 3
The axial overall length H2 of path vertical wall section 1 refers to the axial length and path vertical wall section 1 and major diameter of path vertical wall section 1
The summation of the axial length of transition arc between vertical wall section 2；
The circular arc cone angle of 3 axial cross section of corrugated portion is sagittal plane pair where the vertex relative to corrugated portion 3
The structure of title, the corresponding angle of taper A of the outer wall of the circular arc cone angle are 10 ° -45 °, outside the cone angle top of the circular arc cone angle
The radius R1 of wall circular arc is 3mm-15mm；
The arc radius R2 of transition position is 3mm- between the corrugated portion 3 and the major diameter vertical wall section 2 of axial ends
10mm；
The path vertical wall section 1, major diameter vertical wall section 2, corrugated portion 3, path vertical wall section 1 and major diameter vertical wall section
The wall thickness of transition portion is 1.5mm-3.5mm between transition and major diameter vertical wall section 2 and corrugated portion 3 between 2.
Waveform spacer described in the utility model for adjusting bearing pre-fastening is passed through interior using carbon constructional quality steel pipe
It is swollen to cut.
The mechanical characteristic of the waveform spacer is two end face outsides with certain pressure along the axial compression waveform spacer,
Irreversible plastic deformation can occur for the corrugated portion 3 of the waveform spacer.
Experiment is measured according to the waveform spacer, scene obtains the pressure-deformation curve figure of the waveform spacer；
As shown in Fig. 2, when applying a size to the waveform spacer and being gradually increased to by 0kN the axial load F of 28kN, waveform every
Flexible deformation can occur for set, and as seen from Figure 2, waveform spacer is to be similar to line in the pressure-deformation curve of elastic deformation area
Property increase, and slope increase it is fast, it may be assumed that when increasing to 28kN by 0kN with axial load F, the axial deflection of waveform spacer
1.25mm is increased to by 0mm；When axial load F reaches surge pressure 28kN, the waveform spacer initially enters plastic deformation
Area, the reduction that the axial load F of plastically deforming area will be slow slowly are reduced to 20kN from 28kN, but the axis of waveform spacer
It can accelerate to increase to deflection, be increase rapidly up to 8mm from 1.25mm, as seen from Figure 2, waveform spacer is in plastically deforming area
It is that pressure-deformation curve figure slope is gradually reduced, be similar to horizontal straight line, it can understand are as follows: slow with axial load F
Slow to reduce, the axial deflection of waveform spacer quickly increases.
As shown in Fig. 2, waveform spacer described in the utility model is compared with common rigid spacer, the elasticity of waveform spacer
Deformed area slope is small, into plastically deforming area needed for pressure it is small, and plastically deforming area curve is straight.
In addition, the mechanical characteristic of the waveform spacer is also:
1, the outer diameter D2 of the outer diameter D1 of the major diameter vertical wall section 2 of the waveform spacer and path vertical wall section 1
Under conditions of constant, squeeze waveform spacer generate plastic deformation needed for pressure value can with the increase of the wall thickness of waveform spacer and
Increase.
2, under conditions of the outer dimension of the waveform spacer and wall thickness are constant, in the pressure-deformation curve of waveform spacer
Elastic region enter pressure value F required for plastically deforming area can be with the cone angle of the circular arc cone angle of waveform spacer corrugated portion 3
The increase of the radius R1 of top outer wall circular arc and reduce.
3, the radius R1 of the cone angle top outer wall circular arc of the circular arc cone angle of the waveform spacer corrugated portion 3 and wall thickness are constant
Under conditions of, with waveform spacer maximum outside diameter D3 (the i.e. cone angle top end of the circular arc cone angle of waveform spacer corrugated portion 3
Outer diameter) value increases, and the slope of elastic deformation area can be gradually reduced in the pressure-deformation curve of waveform spacer, into plasticity
Pressure value required for deformed area can be also gradually reduced.
As shown in Fig. 2, since the plastically deforming area curve of the waveform spacer is more straight, i.e. the pressure of plastically deforming area
Value variation is small, and deformation values change greatly, and using this characteristic, we can guarantee will have under the conditions of approximately uniform pressure value with ruler
The part of very little error is adjusted within the scope of defined bearing pre-fastening.
As shown in figure 3, waveform spacer described in the utility model is mounted between little-end bearing assembly and big-end bearing assembly
Shaft part on, wherein specifically, the waveform spacer be mounted on the little-end bearing inner ring roller assembly 4 of little-end bearing assembly with
Between the big-end bearing inner ring roller assembly 7 of big-end bearing assembly, and the outer end face of the path vertical wall section 1 of waveform spacer with it is small
The inner face of end bearing inner ring roller assembly 4 is mutually held out against, the end face outside and big-end bearing of the major diameter vertical wall section 2 of waveform spacer
The inner face of inner ring roller assembly 7 is mutually held out against, when to little-end bearing inner ring roller assembly 4 and big-end bearing inner ring roller assembly 7
Between when applying an axial load F, setting little-end bearing inner ring roller assembly 4 and big-end bearing inner ring roller assembly 7 it
Between waveform spacer can be plastically deformed, i.e. the outer end face of little-end bearing inner ring roller assembly 4 and big-end bearing inner ring roller
Axial distance B between the outer end face of assembly 7 can become smaller, and the inner face of little-end bearing outer ring 5 and big-end bearing outer ring 6 is interior
Axial distance A between end face immobilizes (as mentioned before since the axial deformation numerical value of waveform spacer plastically deforming area is exhausted
It is far longer than manufacture processing, the fit-up gap of the components such as little-end bearing, big-end bearing to value, and axial load F is kept substantially
It is constant), therefore little-end bearing assembly can contact with the inside and outside circle of bearing with the rolling element in big-end bearing and generate thixotropy, eliminate
Axial gap in bearing, so that it is whole that little-end bearing, waveform spacer, big-end bearing are connected to become a rigidity, thus
It eliminates due to part processing, assembly bring scale error, bearing pre-fastening is made to reach specified value, to reach raising production effect
Rate, the purpose for reducing operator's labor intensity.
Claims (6)
1. a kind of for adjusting the waveform spacer of bearing pre-fastening, it is characterised in that:
The axial ends of the waveform spacer is respectively equipped with one section of major diameter vertical wall section (2), two sections of major diameter vertical wall sections (2) it
Between be equipped with outwardly convex corrugated portion (3)；
The axial outer end of one section of major diameter vertical wall section (2) is equipped with one section of path vertical wall section (1), path straight wall portion wherein
Divide between (1) and major diameter vertical wall section (2) and is connect along axial for arc transition；
The axial cross section shape of the corrugated portion (3) is the circular arc cone angle shape of outwardly convex, the axial direction of the corrugated portion (3)
Both ends are connect respectively with the major diameter vertical wall section (2) of two sides with uniform circular arcs shape transition.
2. a kind of for adjusting the waveform spacer of bearing pre-fastening as described in claim 1, it is characterised in that:
The outer diameter of the major diameter vertical wall section (2) is 1-1.5 times of the outer diameter of path vertical wall section (1).
3. a kind of for adjusting the waveform spacer of bearing pre-fastening as described in claim 1, it is characterised in that:
The axial overall length of the major diameter vertical wall section (2) is 4-6 times of the axial overall length of path vertical wall section (1), wherein
The axial overall length of the major diameter vertical wall section (2) refers to the sum of axial length of both ends major diameter vertical wall section (2), corrugated portion
(3) summation of the axial length of transition arc, institute between axial length and major diameter vertical wall section (2) and corrugated portion (3)
The axial overall length for stating path vertical wall section (1) refers to the axial length and path vertical wall section (1) of path vertical wall section (1)
The summation of the axial length of transition arc between major diameter vertical wall section (2).
4. a kind of for adjusting the waveform spacer of bearing pre-fastening as described in claim 1, it is characterised in that:
The corresponding angle of taper of outer wall of the circular arc cone angle of corrugated portion (3) axial cross section is 10 ° -45 °, the circular arc cone
The radius of the cone angle top outer wall circular arc at angle is 3mm-15mm.
5. a kind of for adjusting the waveform spacer of bearing pre-fastening as described in claim 1, it is characterised in that:
The arc radius of transition position is 3mm-10mm between the corrugated portion (3) and the major diameter vertical wall section (2) of axial ends.
6. a kind of for adjusting the waveform spacer of bearing pre-fastening as described in claim 1, it is characterised in that:
The path vertical wall section (1), major diameter vertical wall section (2), corrugated portion (3), path vertical wall section (1) and major diameter straight wall
Partially the wall thickness of transition portion is between the transition between (2) and major diameter vertical wall section (2) and corrugated portion (3)
1.5mm-3.5mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920161044.0U CN209638376U (en) | 2019-01-30 | 2019-01-30 | It is a kind of for adjusting the waveform spacer of bearing pre-fastening |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920161044.0U CN209638376U (en) | 2019-01-30 | 2019-01-30 | It is a kind of for adjusting the waveform spacer of bearing pre-fastening |
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| Publication Number | Publication Date |
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| CN209638376U true CN209638376U (en) | 2019-11-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595328A (en) * | 2019-01-30 | 2019-04-09 | 汽解放汽车有限公司 | It is a kind of for adjusting the waveform spacer of bearing pre-fastening |
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2019
- 2019-01-30 CN CN201920161044.0U patent/CN209638376U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595328A (en) * | 2019-01-30 | 2019-04-09 | 汽解放汽车有限公司 | It is a kind of for adjusting the waveform spacer of bearing pre-fastening |
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