CN104568441B - Bearing friction torque survey tool and bearing pre-tightened amount verification method - Google Patents
Bearing friction torque survey tool and bearing pre-tightened amount verification method Download PDFInfo
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- CN104568441B CN104568441B CN201510020315.7A CN201510020315A CN104568441B CN 104568441 B CN104568441 B CN 104568441B CN 201510020315 A CN201510020315 A CN 201510020315A CN 104568441 B CN104568441 B CN 104568441B
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Abstract
The invention provides a kind of bearing friction torque survey tool, including：Torque wrench；Rotational positioning bar, the rotational positioning bar has moment of torsion input section, cylindrical section and torque output section；Positioning disk, the positioning disk, which has, is provided with through hole on cap and pipe portion, the cap, multiple locating dowels are stretched out in the pipe portion lower end；The moment of torsion input section of the rotational positioning bar coordinates after passing through the through hole of the cap of the positioning disk with the torque wrench, the cylindrical section of the rotational positioning bar is limited in the pipe portion by the cap of the positioning disk, and the cylindrical section and the pipe portion rotatable engagement.Present invention also offers the method verified using above-mentioned instrument to bearing pre-tightened amount.The present invention can at lower cost to being closed in housing the friction torque of bearing measure and bearing pre-tightened amount verified.
Description
Technical field
The present invention relates to torque value fields of measurement, and in particular to preloaded bearing friction torque survey tool and bearing pre-tightened amount
Verification method.
Background technology
In axle transmission field, rotating shaft usually requires to be supported on enclosure interior by bearing.It is typical with one kind shown in Fig. 2
Exemplified by one output shaft of double clutch gearbox, typical transmission device of double clutch transmission is referred to by two clutches
Device is connected with two input shafts respectively, torque conversion and output is realized via different output shafts, so as to transmit engine power.It is double
Clutch transmission supports output shaft 2 using taper roll bearing.Taper roll bearing is by inner ring 3, outer ring 4 and roller 5 three
Part is constituted, and inner ring 3 is fitted on output shaft 2, and outer ring 4 is then pressed into the bearing saddle bore with the housing 1 of the corresponding matching of inner ring 3
It is interior, compressed by housing 1.Roller 5 is located between inner ring 3 and outer ring 4.The axial pre tightening force of taper roll bearing is by matching shell
Adjust pad 6 between body 1 and outer ring 4 is adjusted.
It is quite crucial that pretension is carried out to bearing, and appropriate pretightning force can strengthen bearing life, make gearbox in height
It is more steady in speed operating, and can reduce because high temperature causes parts to expand so that tooth axle system is in transmission internal play
Interference risk reduction.The pretightning force of bearing is to weigh the whether rational index of bearing pre-tightened after the completion of gearbox assembling, is being set
The meter stage is controlled by rational pretension amount, but pretightning force is not easy to measurement.
There are the apparatus and method individually detected to the moment of torsion of bearing in the prior art, such as in Application No.
CN201210048067.3, entitled " `
Disclosed in the Chinese invention patent of bearing temperature, the test method of dynamic torque detection and experimental rig ", lead to
Cross hydraulic cylinder to bearing apply pretightning force, forwarded using motor moving axis it is dynamic, so as to obtain bearing temperature rise, pressure, moment of torsion form
And curve is drawn according to form.Similar measurement apparatus and measuring method are feasible if Production of bearing factory applies, because
Production of bearing factory needs to produce bearing in batches and detected.On the premise of system architecture, temperature etc. are certain, bearing pre-tightened
Measuring (power) and friction torque (also referred to as starting torque) has mutual corresponding relation, for example, drawn in table 1 or according to table one
Fig. 1 in curve shown in, the data wherein in table 1 and Fig. 1 can either be obtained according to theoretical calculation, also can use as before
Described apparatus and method are obtained by testing.If resulting in friction torque, it becomes possible to checked in from table 1 or Fig. 1
Pretension force value corresponding with friction torque.
The pretightning force of table 1 and friction torque relation table
| Pretightning force/N | Friction torque/Nm |
| 40 | 1.58 |
| 50 | 1.72 |
| 60 | 1.83 |
| 70 | 1.95 |
| 80 | 2.12 |
| 90 | 2.3 |
| 100 | 2.51 |
| 110 | 2.71 |
| 120 | 2.92 |
| 130 | 3.11 |
| 140 | 3.32 |
After the completion of assembling, pretightning force and the design load of the cone bearing of practical set might have certain difference, for example, adjust
If the thickness selection of whole pad 6 is improper, then pretightning force (amount) is improper, will result in pretightning force actual value and does not meet design
It is required that, therefore need to verify the pretightning force of bearing after the completion of assembling.Bearing pre-tightened amount is big after the completion of being assembled for measurement
It is small whether suitable, the friction torque of the cone bearing of each output shaft 2 need to be measured, so as to draw each output shaft of gearbox
The scope of cone bearing friction torque, then corresponding pretightning force scope is checked in, verify the axis of cone after the completion of being assembled as transmission assembly
Hold pretightning force and whether meet the index of design requirement, while being also that checking adjust pad 6 chooses whether suitable one important finger
Mark.But now cone bearing and adjust pad 6 have been closed in the inside of housing 1, or limited and oil sealing and housing etc.
The stop of circumferential component, therefore can not measure.Moreover, for auto producer, because for the change of same model
Fast case, as long as measuring the data of several gearboxes in the design phase, it becomes possible to verify whether bearing pre-tightened amount meets design requirement,
Applied to entire block, therefore the pretightning force that auto producer is carried out verifies only a small amount detection, redesigns, purchase multiple
Miscellaneous special measurement device is not to one's profit.
The content of the invention
Enter it is an object of the invention to provide a kind of friction torque of bearing that can at lower cost to being closed in housing
The instrument of row measurement, and the method verified to bearing pre-fastening.
To achieve the above object, The embodiment provides following technical scheme：
A kind of bearing friction torque survey tool, including：Torque wrench；Rotational positioning bar, the rotational positioning bar has
Moment of torsion input section, cylindrical section and torque output section；Positioning disk, the positioning disk has to be provided with cap and pipe portion, the cap
Multiple locating dowels are stretched out in through hole, the pipe portion lower end；The moment of torsion input section of the rotational positioning bar passes through the lid of the positioning disk
Coordinate after the through hole in portion with the torque wrench, the cylindrical section of the rotational positioning bar is limited to institute by the cap of the positioning disk
State in pipe portion, and the cylindrical section and the pipe portion rotatable engagement.
Preferably, above-mentioned bearing friction torque survey tool also include having at the top of bolt, the bolt with
The blind hole of the torque output section interference fit.
Preferably, above-mentioned bearing friction torque survey tool also include taper locating rod, the taper locating rod with it is described
Bolt is threadedly coupled, and the taper locating rod has conical section.
Preferably, the torque wrench is indicating value style torque wrench.
Preferably, the torque wrench includes sensor and receiver display panel.
Preferably, the rotational positioning bar also has the regular prism being located between the cylindrical section and the moment of torsion input section
Section, the regular prism section is stretched out out of the positioning disk through hole, and the cap of the positioning disk is provided with breach, the sensor position
In in the breach.
Preferably, it is carved with start line on a side of the regular prism section.
A kind of bearing pre-fastening verification method, including：
The torque output section of the rotational positioning bar of bearing friction torque survey tool as described above is extend into housing
It is connected with rotating shaft；
By positioning disk positioning on the housing；
Moment of torsion is applied to the moment of torsion input section by the torque wrench, by torque output section to positioned at described
The rotating shaft output torque for being provided with bearing of enclosure interior, makes the rotating shaft at the uniform velocity rotate；
Read the torque value that the torque wrench is exported；
Search pretension force value corresponding with the torque value；
The pretension force value checked in and design load are contrasted, so that it is determined that whether bearing pre-tightened amount meets design requirement.
Preferably, the torque wrench includes sensor and receiver display panel, and the rotational positioning bar, which also has, to be located at
Regular prism section between the cylindrical section and the moment of torsion input section, rotates the rotating shaft one week, when the side of regular prism section
The distance between rib and the sensor most torque value of hour record, take the average value of multiple torque values as reality
Torque value.
The torque wrench that the present invention is used is the common instrument in market, the auxiliary member such as rotational positioning bar and positioning disk for being configured
It can be obtained by simply machining, cost simple in construction is low, torque output section is extend into enclosure interior is connected with rotating shaft
Afterwards, it is positioned at positioning disk on housing and the rotary motion of rotated locating shaft is limited, can be just held very much by torque wrench
Change places and measure the actual friction torque of bearing after assembling, the measured corresponding pretension force value of friction torque and design load are carried out
Contrast, it becomes possible to verify choosing whether properly for adjust pad.
Further, by the way of bolt or bolt and taper locating rod coordinate, to realize that moment of torsion is defeated
Go out torque output of the section to rotating shaft, adapt to the screwed hole or unthreaded hole of rotating shaft, improve the logical of bearing friction torque survey tool
The property used.
Further, indicating value style torque wrench of the selection with sensor and receiver display panel, and using regular prism section
Coordinate with sensor, the distance between the incline of regular prism and sensor can be shown on receiver display panel, therefore
During rotating shaft, data point, rotation can be used as using the distance between the incline and sensor of regular prism section minimal instant
Circling just can fifty-fifty recorded multiple torque values, average as actual torque value, measurement process is easier, survey
Value is more accurate.
Brief description of the drawings
Next the specific embodiment of the present invention will be described in further detail with reference to accompanying drawing, wherein：
Fig. 1 is the pretightning force-friction torque relation curve drawn according to table 1；
Fig. 2 is a kind of partial sectional view of typical double clutch gearbox；
Fig. 3 is the stereogram of the friction torque survey tool of one embodiment of the present invention；
Fig. 4 is the stereogram of the torque wrench of one embodiment of the present invention；
Fig. 5 is the stereogram of the positioning disk of one embodiment of the present invention；
Fig. 6 is the stereogram of the rotational positioning bar of one embodiment of the present invention；
Fig. 7 is the sectional view that torque measurement is carried out using the friction torque survey tool of one embodiment of the present invention；
Fig. 8 be the present invention second embodiment taper locating rod be connected with bolt after stereogram；
Fig. 9 is the sectional view that torque measurement is carried out using the friction torque survey tool of second embodiment of the present invention.
Description of symbols in figure：1st, housing, 2, output shaft, 3, inner ring, 4, outer ring, 5, roller, 6, adjust pad, 7, moment of torsion pulls
Hand, 8, positioning disk, 9, rotational positioning bar, 10, sensor, 11, receiver display panel, 12, spanner, 13, locating dowel, 14, breach,
15th, cap, 16, pipe portion, 17, through hole, 18, moment of torsion input section, 19, regular prism section, 20, incline, 21, start line, 22, cylinder
Section, 23, torque output section, 24, bolt, 25, blind hole, 26, taper locating rod, 27, conical section.
Embodiment
In following description, although be pair with the output shaft 2 of the double clutch gearbox in Fig. 2 for application moment of torsion
As carrying out exemplary description, but this is not intended to be defined the method for work of the present invention, and those skilled in the art should manage
Solution, bearing torque survey tool and bearing pre-fastening verification method of the invention is equally applicable to other such as differential mechanism have
The part of the rotating shaft supported by bearing.
With reference to Fig. 3, bearing friction torque survey tool includes torque wrench 7,9 three masters of positioning disk 8 and rotational positioning bar
Want structure.
With reference to Fig. 4, in one embodiment of the present invention, the torque wrench 7 used for indicating value style torque wrench,
Indicating value style torque wrench is the common instrument in market, can show the moment of torsion that torque wrench is applied, be generally divided into digital display
Formula torque wrench and dial type torque wrench, its operation principle are no longer described in detail herein.More specifically, being used in the present embodiment
Digital display type torque wrench with sensor 10 and receiver display panel 11.Receiver display panel 11 can show sensor 10
The torque value that measured value and spanner 12 are applied.
With reference to Fig. 5, positioning disk 8 has cap 15 and pipe portion 16.The through hole 17 with the insertion of pipe portion 16 is provided with cap 15.Pipe
The lower end of portion 16 extends downwardly from multiple locating dowels 13.Breach 14 is also provided with cap 15.
With reference to Fig. 6, rotational positioning bar 9 has continuous moment of torsion input section 18, regular prism section 19, cylindrical section 22 each other
With torque output section 23.Wherein, the shape of the spanner 12 in the shape and Fig. 4 of moment of torsion input section 18 matches, and is positive six prismsby
Shape, the spanner 12 of such torque wrench 7 can just coordinate with moment of torsion input section 18, so as to the input torque of rotational positioning bar 9.Just
Prism section 19 has multiple inclines 20, takes six measured values in the present embodiment to realize to rotate a circle, the quantity of incline 20 is
Six, i.e., regular prism section 19 is shaped as positive six prismsby, but in actual applications, different inclines 20 can be selected as needed
Quantity.On a side of regular prism section 19, start line 21 is also carved with.
With reference to Fig. 7, the figure has shown the bearing friction torque survey tool of one embodiment of the present invention in Fig. 2
Cone bearing on the output shaft 2 of double clutch gearbox carries out the principle of friction torque measurement.In the present embodiment, it is fixed to employ
Position bolt 24, more specifically, the bolt 24 is hexagon socket head cap screw, with interior hexagonal blind hole 25.Correspondingly, as seen from Figure 6,
Torque output section 23 is also positive six prismsby shape.Typically, the end of output shaft 2 can leave endoporus, be fixed cone bearing inner race 3, one
As fixed using snap ring or bolt is fixed.In the present embodiment, bolt 24 is used to fix the axis of cone of the rear end of output shaft 2
Hold inner ring 3, therefore, bolt 24 can either as bearing friction torque survey tool a part, also can be directly sharp
With the fixing bolt of the end of output shaft 2.After the screwed hole for the end that bolt 24 is screwed in output shaft 2, bolt 24
Be pressed on bearing inner race 3, then will rotational positioning bar 9 torque output section 23 insert housing 1 inside, make torque output section 23 with
The blind hole 25 at the top of bolt 24 is interference fitted.In fact, also can by torque output section 23 process external threads, directly with
Output shaft 2 realizes threaded connection, but now needs torque output section 23 to possess the effect of fixing bearing inner ring, therefore there is envelope
It is advantageous using the torque output section 23 of positive six prismsby shape in the case of stifled bolt 24.Then, positioning disk 8, profit are installed
The cylindrical section 22 of rotational positioning bar 9 is limited in pipe portion 16 with the cap 15 of positioning disk 8, and the external diameter and pipe of cylindrical section 22
The internal diameter in portion 16 is identical, makes cylindrical section 22 and the rotatable engagement of pipe portion 16.Regular prism section 19 and moment of torsion input section 18 pass through positioning disk 8
Cap 15 on through hole 17 after stretch out.Positioning disk 8 is positioned on housing 1 by locating dowel 13, and sensor 10 is positioned at breach
In 14.Then, the moment of torsion input section 18 of rotational positioning bar 9 and spanner 12 are coordinated, receives the moment of torsion for coming from torque wrench 7.
With reference to Fig. 8, in a second embodiment of the present invention, to coordinate the output shaft 2 with unthreaded hole, employ taper and determine
Position bar 26.Taper locating rod 26 processes screwed hole vertically, and its outer surface has conical section 27, bolt 24 and cone
Shape locating rod 26 forms an entirety after being threadedly coupled, advantage be can general bolt 24, and screwed hole more preferably processes.
With reference to Fig. 9, and unlike one embodiment shown in Fig. 7, in a second embodiment of the present invention, as
The end of the output shaft 2 of rotating shaft is a unthreaded hole, and this is common in differential design.Now need taper locating rod 26
The insertion unthreaded hole of conical section 27 in, then gently tapping taper locating rod 26 makes it be interference fitted with output shaft 2, makes moment of torsion defeated
Go out section 23 to be interference fitted with blind hole 25, so that the moment of torsion of torque wrench 7 can be passed on output shaft 2.
From the foregoing, it will be observed that in the case where there is bolt 24 and taper locating rod 26, bearing friction torque survey tool
The rotating shaft of screwed hole or unthreaded hole is can adapt to, therefore versatility is stronger.
When being verified to bearing pre-fastening, first have to measure accurate friction torque value, measure the specific of friction torque value
Process is：
The torque output section 23 of rotational positioning bar 9 is extend into housing 1, bolt 24 is passed through depending on rotating shaft different situations
Either moment of torsion input section 23 is connected by taper locating rod 26 with output shaft 2 or moment of torsion input section 23 directly connects with output shaft 2
Connect；
Positioning disk 8 is positioned on housing 1 by locating dowel 13；
Moment of torsion is applied to moment of torsion input section 18 by torque wrench 7, is exported and turned round to output shaft 2 by torque output section 23
Square, makes output shaft 2 at the uniform velocity rotate；
When rotating rotational positioning bar 9, first by the center line of the measuring surface of start line alignment sensor 10, starting rotation
When regular prism section 19 side with start line and the descending change of the distance between sensor 10, go to incline 20 and pass
When the center line of the measuring surface of sensor 10 is overlapped, shown distance is minimum on receiver display panel 11, now reads receiver and shows
Show on disk 11 torque value that shown torque wrench 7 is exported, output shaft 2 at the uniform velocity rotates a circle then six inclines and sensor
There are six minimum values in 10 distance, can correspondingly read six torque values.The internal processes of receiver display panel 11 can
Automatically six data are recorded and are averaged and are shown, the actual friction torque of the cone bearing on output shaft 2 is used as.
When being measured using dial type torque wrench, then do not need rotational positioning bar 9 that there is regular prism section 19, but this
When torque value the reading operating personnel that place one's entire reliance upon carry out at random, due to the engagement of rigging error, part's machining errors and gear
The reasons such as stress, the numerical value for the measurement that rotates a circle is different, therefore the accuracy of artificial reading numerical values obviously can be lowered, because
This has regular prism section 19 and automatic repeatedly value is with advantage by the way of sensor 10 and regular prism section 19 coordinate
's.
Measure after actual friction torque value, pretension force value corresponding with the friction torque value searched by table 1 or Fig. 1,
The pretension force value checked in is just able to verify that out whether pretightning force is suitable with design load contrast again.For example in the design phase, design
It is required that pretightning force be 90N, corresponding friction torque be 2.3Nm, corresponding pretension amount be 0.1mm, but assembling after the completion of by survey
Amount finds that actual friction torque is 3Nm, therefore the pretension amount 0.1mm of setting is inappropriate, therefore makes survey by adjusting pretension amount
The friction torque of amount meets design requirement, i.e. corresponding pretightning force and meets design requirement.And the pretension amount now measured
It can be used as the final design load being embodied on drawing.
Although the present invention is described with reference to above example, the present invention is not limited to above-described embodiment,
And only limited by claim, those of ordinary skill in the art easily can modify and change to it, but not from
The essential idea and scope of format invention.
Claims (5)
1. a kind of bearing friction torque survey tool, it is characterised in that including：
Torque wrench；
Rotational positioning bar, the rotational positioning bar has moment of torsion input section, cylindrical section and torque output section；
Positioning disk, the positioning disk, which has, is provided with through hole on cap and pipe portion, the cap, it is multiple fixed that the pipe portion lower end is stretched out
Position post；
The moment of torsion input section of the rotational positioning bar coordinates after passing through the through hole of the cap of the positioning disk with the torque wrench,
The cylindrical section of the rotational positioning bar is limited in the pipe portion by the cap of the positioning disk, and the cylindrical section with it is described
Pipe portion rotatable engagement；
The torque wrench is indicating value style torque wrench；The torque wrench includes sensor and receiver display panel；
The rotational positioning bar also has the regular prism section being located between the cylindrical section and the moment of torsion input section, the positive rib
Shell of column stretches out out of the positioning disk through hole, and the cap of the positioning disk is provided with breach, and the sensor is located at the breach
It is interior.
2. bearing friction torque survey tool according to claim 1, it is characterised in that described also including bolt
There is the blind hole with torque output section interference fit at the top of bolt.
3. bearing friction torque survey tool according to claim 2, it is characterised in that also including taper locating rod, institute
Taper locating rod is stated to be threadedly coupled with the bolt, and the taper locating rod has conical section.
4. bearing friction torque survey tool according to claim 1 a, it is characterised in that side of the regular prism section
Start line is carved with face.
5. a kind of bearing pre-tightened amount verification method, it is characterised in that including：
The moment of torsion of the rotational positioning bar of bearing friction torque survey tool as described in any one of Claims 1-4 is defeated
Go out section and extend into housing and be connected with rotating shaft；
By positioning disk positioning on the housing；
Moment of torsion is applied to the moment of torsion input section by the torque wrench, by torque output section to positioned at the housing
The internal rotating shaft output torque for being provided with bearing, makes the rotating shaft at the uniform velocity rotate；
Read the torque value that the torque wrench is exported；
Search pretension force value corresponding with the torque value；
The pretension force value checked in and design load are contrasted, so that it is determined that whether bearing pre-tightened amount meets design requirement；
The torque wrench include sensor and receiver display panel, the rotational positioning bar also have be located at the cylindrical section and
Regular prism section between the moment of torsion input section, rotates the rotating shaft one week, when the incline and the sensing of regular prism section
The distance between device most torque value of hour record, takes the average value of multiple torque values as actual torque value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510020315.7A CN104568441B (en) | 2015-01-15 | 2015-01-15 | Bearing friction torque survey tool and bearing pre-tightened amount verification method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510020315.7A CN104568441B (en) | 2015-01-15 | 2015-01-15 | Bearing friction torque survey tool and bearing pre-tightened amount verification method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104568441A CN104568441A (en) | 2015-04-29 |
| CN104568441B true CN104568441B (en) | 2017-09-05 |
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| CN201510020315.7A Active CN104568441B (en) | 2015-01-15 | 2015-01-15 | Bearing friction torque survey tool and bearing pre-tightened amount verification method |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107941630B (en) * | 2017-11-28 | 2024-03-29 | 中车戚墅堰机车车辆工艺研究所股份有限公司 | Test device and method for measuring limit torque |
| CN108519182B (en) * | 2018-03-19 | 2020-10-20 | 中科新松有限公司 | Braking torque testing instrument and method based on wave spring |
| CN109333439A (en) * | 2018-11-29 | 2019-02-15 | 奇瑞商用车（安徽）有限公司 | For measuring the simple accessory and method of adjustment of rear axle hub bearing staring torque |
| CN113588146A (en) * | 2021-07-29 | 2021-11-02 | 人本股份有限公司 | Detection tool for detecting friction torque between bearing sealing ring and outer ring |
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|---|---|---|---|---|
| CN201716179U (en) * | 2010-06-10 | 2011-01-19 | 杭州雷迪克汽车部件制造有限公司 | Clutch release bearing friction torque testing device |
| CN202133549U (en) * | 2011-05-31 | 2012-02-01 | 浙江吉利汽车研究院有限公司 | Detection tool for adjusting gasket of transmission bearing |
| CN203298912U (en) * | 2013-06-18 | 2013-11-20 | 四川宁江精密工业有限责任公司 | Bearing torque detecting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008064640A (en) * | 2006-09-08 | 2008-03-21 | Nsk Ltd | Bearing function evaluating method |
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|---|---|---|---|---|
| CN201716179U (en) * | 2010-06-10 | 2011-01-19 | 杭州雷迪克汽车部件制造有限公司 | Clutch release bearing friction torque testing device |
| CN202133549U (en) * | 2011-05-31 | 2012-02-01 | 浙江吉利汽车研究院有限公司 | Detection tool for adjusting gasket of transmission bearing |
| CN203298912U (en) * | 2013-06-18 | 2013-11-20 | 四川宁江精密工业有限责任公司 | Bearing torque detecting device |
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