CN108562438A - Pairing bearing frictional torque measuring device and measuring method face-to-face - Google Patents
Pairing bearing frictional torque measuring device and measuring method face-to-face Download PDFInfo
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- CN108562438A CN108562438A CN201711462953.XA CN201711462953A CN108562438A CN 108562438 A CN108562438 A CN 108562438A CN 201711462953 A CN201711462953 A CN 201711462953A CN 108562438 A CN108562438 A CN 108562438A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0009—Force sensors associated with a bearing
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- Force Measurement Appropriate To Specific Purposes (AREA)
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Abstract
Pairing bearing frictional torque measuring device and measuring method face-to-face, including matching bearing face-to-face and measuring pedestal, measuring device further includes that the locking nut and sleeve of axial pretightening are realized to matching bearing face-to-face, and it is set in the load block of sleeve outer side band moving sleeve rotation, sleeve is set in the outside of pairing bearing face-to-face and matches with the outer peripheral surface of face-to-face pairing bearing, the bottom surface of sleeve is equipped with the end face being supported to the lower section bearing outer ring bottom surface for matching bearing face-to-face, locking nut is arranged in sleeve and is pressed on the cycle surface of the top bearing of pairing bearing face-to-face, in terms of the horizontal tension for being equipped with driving load block in the force slot opened up on load block to measure the rotation of pedestal longitudinal center line.Solve the problems, such as that major diameter matched bearings starts the measurement of moment of friction, the measuring device and method are simple, are Purely mechanical measuring device, are not easy to be affected by the surrounding environment, measurement result is accurate and reliable.
Description
Technical field
The present invention relates to Bearing testing technical field, particularly relate to match bearing frictional torque measuring device face-to-face,
And realize pairing bearing frictional torque measurement method face-to-face using measuring device.
Background technology
Moment of friction is an important parameter of rolling bearing, be influence host system reliability and accuracy it is important
Factor, particularly with the high bearing of sensitivity requirement, such as：Gyroscope bearing, satellite despun antenna bearing, carrier rocket axis
It holds, flying platform bearing etc., and the type bearing is usually constructed with moment of friction requirement due to the use of the particularity of operating mode.This
Single set bearing bore diameter size 40mm, outer diameter 52mm, width 7mm in example, outer ring band slope, bearing belong to separable axis
It holds, use state is that two sets of single-row bearings carry out installing (as shown in Figure 1) face-to-face, reaches pre- by grinding bearings cycle surface
Tightly, the axial pre tightening force 30N of bearing, axially loaded mode load for cycle surface, and the matched bearings after load starts friction
Positive and negative each 5 points of the survey of torque, moment of friction maximum value are no more than 5N.mm.
Rarely found in the instrument market of traditional measurement moment of friction, most of is all based on measurement vibration, only seldom
Specific use bearing has moment of friction requirement.The measurement of friction torque equipment that department uses is YZC- II, which is to be exclusively used in
Micro-bearing friction torgue is measured, the startup moment of friction of bearing can be not only measured, the dynamic of single set bearing can also be measured
State moment of friction, the instrument are to be made according to the electromagnetic principle that induced moment generates, therefore measurement range is limited to grating
Size, measurement range 2~10mm of internal diameter size, axial load are not more than 10N.From the overall dimensions and axis of this example middle (center) bearing
To the size of load, it is known that YZC- II is the startup moment of friction that cannot be used for measuring the model bearing.
In addition the bearing is the separated type bearing of the low fore shaft of outer ring band, in axial pre-load and the mistake of measurement moment of friction
Cheng Zhong, it is careless slightly in operating process, it just will appear sequence of sanqu songs within a particular musical mode phenomenon, not only steel ball is easy loss of being scattered, and can also extend and entirely rub
Wipe the time of measuring of torque.This is also a bit that must take into consideration in operating process.
The overall dimensions of the pairing bearing are more much bigger than conventional miniature sizes, and the measurement of friction torque of miniature bearing is set
It is standby to use；In addition the quantity of the model bearing is very limited, not the advantage of batch, is not enough to introduce new moment of friction
Measuring apparatus, therefore realize that the measurement that major diameter matched bearings starts moment of friction has very under the premise of not increasing new equipment
Strong practicability.
Invention content
In order to solve the above technical problems, the present invention provides a kind of pairing bearing frictional torque measuring device and measurement face-to-face
Method solves the problems, such as that major diameter matched bearings starts the measurement of moment of friction, and the measuring device and method are simple, is Purely mechanical
Measuring device is not easy to be affected by the surrounding environment, and measurement result is accurate and reliable.
To realize the above-mentioned technical purpose, used technical solution is：Pairing bearing frictional torque measuring device face-to-face,
Including matching bearing face-to-face and measuring pedestal, two sets of bearing arrangement sizes for matching bearing face-to-face are identical, and in axial side
Measured on pedestal to fitting to be set in, the upper end of the measurements pedestal be with match that bearing inner race fits face-to-face the
One cylindrical seat, the lower end for measuring pedestal are to be arranged in the lower section of the first cylindrical seat and the lower square shaft to matching bearing face-to-face
The second cylindrical seat that inner ring bottom surface is supported is held, measuring device further includes realizing axial pretightening to matching bearing face-to-face
Locking nut and sleeve, and it is set in the load block of sleeve outer side band moving sleeve rotation, sleeve is set in pairing axis face-to-face
The outside held simultaneously matches with the outer peripheral surface of face-to-face pairing bearing, and the bottom surface of sleeve is equipped with to matching under bearing face-to-face
The end face that square shaft bearing outer-ring bottom surface is supported, locking nut is arranged in sleeve and is pressed on matches the upper of bearing face-to-face
On the cycle surface that square shaft is held, the lower face of locking nut not with measure base contacts, the outer circumference surface and sleeve of locking nut
The cooperation of top inner thread, the upper surface of locking nut is equipped with pushes locking nut to matching axis face-to-face for torque spanner
The blind hole for applying load is held, multiple force slots with measurement pedestal axial direction central axis are offered on load block, are being exerted a force
In terms of the horizontal tension for being equipped with driving load block in slot to measure the rotation of pedestal longitudinal center line, horizontal tension meter is pushed to make load block
Band moving sleeve rotates, and sleeve drives the outer ring rotation of pairing bearing face-to-face.
Further, the measuring device further includes mounting seat, and mounting seat includes the circle of two not isometrical coaxial lines
Shell of column, the diameter of the mounting seat of epimere match with face-to-face pairing bearing inner ring interior diameter size, the installation bottom of hypomere
The diameter of seat is more than the internal diameter size of pairing bearing outer ring face-to-face, and the internal diameter 0.03-0.1mm of the end face less than sleeve.
Pairing bearing frictional torque measurement method face-to-face is realized using measuring device, is included the following steps：
It is calculated face-to-face according to the bulge quantity measured Step 1: measuring bulge quantity of single set bearing at axial X first
Pairing bearing needs repair the protrusion numerical quantity ground, and the cycle surface for grinding wherein a set of bearing is repaiied according to the numerical value；
Step 2: according to the relationship between axial rub torque and the diameter of thread, the numerical value rotated using torque spanner is calculated, i.e.,
Axially fasten the concrete numerical value of power F；
Step 3: using technique retainer and technique steel ball, two nested structure size same axis are installed for use with completing；
Step 4: mounting seat is put into sleeve, two sets of bearings are individually installed to according to aspectant mode at this time
In mounting seat, a set of bearing being located above is above-listed bearing, and underlying a set of bearing is following bearing, by sleeve edge
Axial direction moves, and two sets of bearings are packed into sleeve, and continues to move to sleeve in an axial direction until thoroughly being detached with mounting seat；
Step 5: locking nut is screwed in sleeve, until torque spanner, is inserted into locks at this time by the above-listed bearing of end in contact under sleeve
In the blind hole of tight nut, the positions F on turning moment spanner to torque spanner dial plate obtain matching bearing axial pretightening face-to-face
Component；
It is measured on pedestal Step 6: face-to-face pairing bearing axial pretightening component is installed to from top, load block is placed on
On sleeve, the indicator of horizontal tension meter is inserted into the force slot of load block, tensometer is laterally stirred, when load block rotates
When, write down the numerical value A on horizontal tension meter, unit g；
Step 7: the radius size of load block is B, unit cm, then the bearing startup friction torque of the point is A*B, and unit is
g.cm；
Step 8: replacing horizontal tension meter to the force slot of different location on load block, step 6 ~ seven are repeated, are measured same
The moment of friction of direction left point；
Step 9: when negative direction measures, horizontal tension meter is rotated round about, measures, obtains according to step 6 ~ eight
The moment of friction of positive direction and negative direction all the points.
Present invention has the advantages that：
1, the measuring device is Purely mechanical, reliable and stable, is not easy to be affected by the surrounding environment.
2, measurement method is simple, not high to the skill set requirements of operating personnel, due to the use of torque spanner to matched bearings
Outer ring applies axial load, therefore axial preload is more acurrate, the problem that the personnel difference of avoiding causes scattered error big.
3, the present invention is with strong points, and the major diameter matched bearings for being particularly suitable for small lot starts the measurement of moment of friction.
Description of the drawings
Fig. 1 is to match bearing schematic diagram face-to-face；
Fig. 2 is the structural schematic diagram of the present invention；
Fig. 3 is locking nut of the present invention cooperation grinding schematic diagram；
Fig. 4 is present invention pairing bearing axial pretightening component scheme of installation face-to-face；
Fig. 5 is present invention pairing bearing axial pretightening component diagram face-to-face；
In figure：1, load block, 11, force slot, 2, sleeve, 21, end face, 3, above-listed bearing, 4, following bearing, 5, locking nut,
51, blind hole, 6, measure pedestal, the 61, first cylindrical seat, the 62, second cylindrical seat, 7, horizontal tension meter, 8, mounting seat.
Specific implementation mode
Face-to-face pairing bearing frictional torque measuring device, including load block 1, face-to-face match bearing, measure pedestal 6,
Sleeve 2, locking nut 5 and horizontal tension meter 7, using measure pedestal 6 be supported to matching bearing face-to-face, using sleeve with
And locking nut realizes the axial pretightening of matched bearings, applies axial force by load block, is realized using horizontal tension meter big straight
The measurement of moment of friction under the axial direction preloaded condition of diameter matched bearings outer ring.
Two sets of bearing arrangement sizes of pairing bearing are identical face-to-face, and fit be set in measurement pedestal in the axial direction
On 6, as shown in Figure 1, two bearings are diagonal contact ball bearing, as shown in Fig. 2, when in use, it is above-listed axis to be located above
3 are held, underlying is following bearing 4, and the outer ring tight fit of above-listed bearing 3 and following bearing 4, two bearings, which are mounted on, to be measured
When on pedestal 6, coaxial line installation.
The upper end for measuring pedestal 6 is the first cylindrical seat 61 to fit with face-to-face pairing bearing inner race, measures pedestal 6
Lower end be to be arranged in the lower section of the first cylindrical seat 61 and prop up the lower section bearing inner race bottom surface for matching bearing face-to-face
Second cylindrical seat 62 of support is used when measuring moment of friction for the measurement for being implemented as to bearing startup friction torque and measures bottom
Seat supports the face-to-face pairing bearing inner race end face after axial pre-load, while preventing from matching bearing transverse shakiness face-to-face, i.e.,
The entire component of Fig. 5 is supported using measurement pedestal, next face-to-face pairing bearing pre- so under external force can be free
Rotation, ensures the smooth measurement of moment of friction.
As shown in figure 5, measuring device further includes realizing the locking nut 5 and sleeve of axial pretightening to matching bearing face-to-face
2, and it is set in the load block 1 of 2 outer side band moving sleeve 2 of sleeve rotation, for the measurement for being implemented as to bearing startup friction torque,
Axial pretightening need to be carried out to pairing bearing, axial pretightening, sleeve lower end are realized to matched bearings by locking nut and sleeve
Step supports the cycle surface of following bearing, locking nut to compress the cycle surface of above-listed bearing, and spherical bearing is faced to realize
The axial pretightening of outer ring stand under load.
Sleeve 2 is set in the outside of pairing bearing face-to-face and matches with the outer peripheral surface of face-to-face pairing bearing, covers
The bottom surface of cylinder 2 is equipped with the end face 21 being supported to the lower section bearing outer ring bottom surface for matching bearing face-to-face, to be implemented as to axis
The measurement for starting moment of friction is held, present invention employs the sleeves in Fig. 4, and middle sleeve bottom diameter size is than bearing outer ring
Internal diameter size greatly, while also needing to ensure that the big 0.05mm of the diameter of sleeve bottom diameter size ratio mounting seat lower end is left
The right side, ensure in this way sleeve in radial direction without too big free activity space, bearing can be into when ensuring that axial movement
Enter sleeve inner, and is supported.In addition bigger than the outer diameter of bearing with the size of bearing outside diameter cooperation in sleeve
0.01 ~ 0.02mm, when moving up, two row bearings enter sleeve to be easier such sleeve, be not in clamping stagnation situation.
Locking nut 5 is arranged in sleeve 2 and is pressed on the cycle surface of the top bearing of pairing bearing face-to-face, lock
The lower face of tight nut 5 is not contacted with measurement pedestal 6, and the outer circumference surface of locking nut 5 is matched with the top inner thread of sleeve 2
It closes, for the measurement for being implemented as to bearing startup friction torque, the screw thread on locking nut and sleeve uses the side of thread grinding
Method is processed, and ensures precision when locking nut coordinates with sleeve.In addition the pressure end face of locking nut is also required to carry out accurate mill
It cuts, method for grinding is as shown in figure 3, wherein should ensure that the parallel error of sleeve both ends of the surface before grinding.The upper surface of locking nut 5
Equipped with the blind hole 51 for applying load to matching bearing face-to-face for torque spanner promotion locking nut 5, to realize matched bearings
Start the measurement of moment of friction, it is necessary to accurate axial pre tightening force be applied to matched bearings, set above locking nut thus
Two blind holes are set, axial preload accurately can be applied on the outer ring of matched bearings by torque spanner.
For the measurement for being implemented as to bearing startup friction torque, apply axial load block in outer ring, there are two purposes：①
Apply axial load；2. the measuring device assisted, opens up several slots at the top of load block, when measurement, inserts horizontal tension meter
Enter rotation in slot both may be used.Multiple force slots 11 vertical with 6 longitudinal center line of pedestal is measured are offered on load block 1, are being applied
Driving load block 1 is equipped in power slot 11 7 in terms of the horizontal tension for measuring the rotation of 6 longitudinal center line of pedestal, to realize matched bearings
The measurement for starting moment of friction uses horizontal tension meter when measurement, according to the size of matched bearings moment of friction and load block
Outer diameter selects the suitable horizontal tension meter of resolution ratio, can more accurately measure moment of friction.Push horizontal tension meter 7
Load block 1 is set to be rotated with moving sleeve 2, sleeve 2 drives the outer ring rotation of pairing bearing face-to-face.
Measuring device further includes mounting seat 8, and mounting seat 8 includes the cylindrical section of two not isometrical coaxial lines, epimere
The diameter of mounting seat 8 matches with face-to-face pairing bearing inner ring interior diameter size, and the diameter of the mounting seat 8 of hypomere is big
In the internal diameter size of pairing bearing outer ring face-to-face, and it is less than the internal diameter 0.03-0.1mm of the end face 21 of sleeve 2.To be implemented as pair
The measurement of bearing startup friction torque, present invention employs the mounting seats in Fig. 4, and there are two effects：1. mounting seat top
End stand rank the purpose is to reduce the bearing contact length between internal diameter and its outer diameter during the installation process, can fast and easy bearing is pacified
It is placed on second step of mounting seat.2. the diameter of mounting seat lower end is bigger than the internal diameter size of outer ring, single side size
1/5 ~ 1/3 or so of outer ring width can be about accounted for, because when according to being placed on bearing in mounting seat in face of surface model, under
The outer ring of row bearing will be fallen, and to cause the following bearing sequence of sanqu songs within a particular musical mode, and the diameter of mounting seat lower end is than the internal diameter ruler of outer ring
When very little big, due to there is a support of step, following bearing will not the sequence of sanqu songs within a particular musical mode, the axial pretightening in face of spherical bearing can be fast implemented.
Pairing bearing frictional torque measurement method face-to-face is realized using measuring device, is included the following steps：
Step 1: measuring single set bearing first in axial X ＞ 10N（30N is selected herein）Under bulge quantity, it is convex according to what is measured
Output calculates pairing bearing needs face-to-face and repaiies the protrusion numerical quantity ground, the outer ring for grinding wherein a set of bearing is repaiied according to the numerical value
End face；
Step 2: according to the relationship between axial rub torque and the diameter of thread, the numerical value rotated using torque spanner is calculated, i.e.,
Axially fasten the concrete numerical value of power F；
Step 3: using technique retainer and technique steel ball, two nested structure size same axis are installed for use with completing；
Step 4: mounting seat is put into sleeve, two sets of bearings are individually installed to according to aspectant mode at this time
In mounting seat, a set of bearing being located above is above-listed bearing, and underlying a set of bearing is following bearing, by sleeve edge
Axial direction moves, and two sets of bearings are packed into sleeve, and continues to move to sleeve in an axial direction until thoroughly being detached with mounting seat；
Step 5: locking nut is screwed in sleeve, until torque spanner, is inserted into locks at this time by the above-listed bearing of end in contact under sleeve
In the blind hole of tight nut, the positions F on turning moment spanner to torque spanner dial plate obtain matching bearing axial pretightening face-to-face
Component；
It is measured on pedestal Step 6: face-to-face pairing bearing axial pretightening component is installed to from top, load block is placed on
On sleeve, the indicator of horizontal tension meter is inserted into the force slot of load block, tensometer is laterally stirred, when load block rotates
When, write down the numerical value A on horizontal tension meter, unit g；
Step 7: the radius size of load block is B, unit cm, then the bearing startup friction torque of the point is A*B, and unit is
g.cm；
Step 8: replacing horizontal tension meter to the force slot of different location on load block, step 6 ~ seven are repeated, are measured same
The moment of friction of direction left point；
Step 9: when negative direction measures, horizontal tension meter is rotated round about, measures, obtains according to step 6 ~ eight
The moment of friction of positive direction and negative direction all the points.
Claims (3)
1. pairing bearing frictional torque measuring device face-to-face, including match bearing face-to-face and measure pedestal（6）, match face-to-face
It is identical to two sets of bearing arrangement sizes of bearing, and fit be set in measurement pedestal in the axial direction（6）On, feature exists
In：The measurement pedestal（6）Upper end be and the first cylindrical seat for fitting of pairing bearing inner race face-to-face（61）, measure
Pedestal（6）Lower end be arranged in the first cylindrical seat（61）Lower section and the lower section bearing inner race bottom to matching bearing face-to-face
The second cylindrical seat that face is supported（62）, measuring device further includes that the locking of axial pretightening is realized to matching bearing face-to-face
Nut（5）And sleeve（2）, and it is set in sleeve（2）Outer side band moving sleeve（2）The load block of rotation（1）, sleeve（2）It is arranged
Match in the outside of pairing bearing face-to-face and with the outer peripheral surface of face-to-face pairing bearing, sleeve（2）Bottom surface be equipped with pair
The end face that the lower section bearing outer ring bottom surface of pairing bearing is supported face-to-face（21）, locking nut（5）It is arranged in sleeve（2）
On the cycle surface of top bearing that is interior and being pressed on face-to-face pairing bearing, locking nut（5）Lower face not with measure bottom
Seat（6）Contact, locking nut（5）Outer circumference surface and sleeve（2）The cooperation of top inner thread, locking nut（5）Upper table
Face is equipped with pushes locking nut for torque spanner（5）Apply the blind hole of load to matching bearing face-to-face（51）, in load block
（1）On offer it is multiple with measure pedestal（6）The vertical force slot of longitudinal center line（11）, in force slot（11）It is interior to be equipped with driving
Load block（1）To measure pedestal（6）The horizontal tension meter of longitudinal center line rotation（7）, push horizontal tension meter（7）Make load block
（1）Band moving sleeve（2）Rotation, sleeve（2）Drive the outer ring rotation of pairing bearing face-to-face.
2. pairing bearing frictional torque measuring device face-to-face as described in claim 1, it is characterised in that：The measurement dress
It further includes mounting seat to set（8）, mounting seat（8）Include the cylindrical section of two not isometrical coaxial lines, the mounting seat of epimere（8）
Diameter match with face-to-face pairing bearing inner ring interior diameter size, the mounting seat of hypomere（8）Diameter be more than face
The internal diameter size of bearing outer ring is matched in face, and is less than sleeve（2）End face（21）Internal diameter 0.03-0.1mm.
3. realizing pairing bearing frictional torque measurement method face-to-face, feature using measuring device as claimed in claim 2
It is：Include the following steps：
It is calculated face-to-face according to the bulge quantity measured Step 1: measuring bulge quantity of single set bearing at axial X first
Pairing bearing needs repair the protrusion numerical quantity ground, and the cycle surface for grinding wherein a set of bearing is repaiied according to the numerical value；
Step 2: according to the relationship between axial rub torque and the diameter of thread, the numerical value rotated using torque spanner is calculated, i.e.,
Axially fasten the concrete numerical value of power F；
Step 3: using technique retainer and technique steel ball, two nested structure size same axis are installed for use with completing；
Step 4: mounting seat is put into sleeve, two sets of bearings are individually installed to according to aspectant mode at this time
In mounting seat, a set of bearing being located above is above-listed bearing, and underlying a set of bearing is following bearing, by sleeve edge
Axial direction moves, and two sets of bearings are packed into sleeve, and continues to move to sleeve in an axial direction until thoroughly being detached with mounting seat；
Step 5: locking nut is screwed in sleeve, until torque spanner, is inserted into locks at this time by the above-listed bearing of end in contact under sleeve
In the blind hole of tight nut, the positions F on turning moment spanner to torque spanner dial plate obtain matching bearing axial pretightening face-to-face
Component；
It is measured on pedestal Step 6: face-to-face pairing bearing axial pretightening component is installed to from top, load block is placed on
On sleeve, the indicator of horizontal tension meter is inserted into the force slot of load block, tensometer is laterally stirred, when load block rotates
When, write down the numerical value A on horizontal tension meter, unit g；
Step 7: the radius size of load block is B, unit cm, then the bearing startup friction torque of the point is A*B, and unit is
g.cm；
Step 8: replacing horizontal tension meter to the force slot of different location on load block, step 6 ~ seven are repeated, are measured same
The moment of friction of direction left point；
Step 9: when negative direction measures, horizontal tension meter is rotated round about, measures, obtains according to step 6 ~ eight
The moment of friction of positive direction and negative direction all the points.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711462953.XA CN108562438B (en) | 2017-12-28 | 2017-12-28 | Device and method for measuring friction torque of face-to-face paired bearings |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711462953.XA CN108562438B (en) | 2017-12-28 | 2017-12-28 | Device and method for measuring friction torque of face-to-face paired bearings |
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| Publication Number | Publication Date |
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| CN108562438A true CN108562438A (en) | 2018-09-21 |
| CN108562438B CN108562438B (en) | 2020-06-19 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109839051A (en) * | 2019-03-26 | 2019-06-04 | 洛阳新强联回转支承股份有限公司 | A kind of determination method of three-row cylinder roller pitch variable bearings end-play |
| CN110095218A (en) * | 2019-04-26 | 2019-08-06 | 杭州电子科技大学 | Measure the electromagnetic actuator device and its measurement method of Frictional Moment for Rolling Bearings |
| CN110346139A (en) * | 2019-07-15 | 2019-10-18 | 上海交通大学 | Bearing group Pre strained state appraisal procedure and inner hole torque measurement connector |
| CN110823567A (en) * | 2019-08-23 | 2020-02-21 | 人本集团有限公司 | Self-aligning ball bearing swing moment detection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109839051A (en) * | 2019-03-26 | 2019-06-04 | 洛阳新强联回转支承股份有限公司 | A kind of determination method of three-row cylinder roller pitch variable bearings end-play |
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| CN110346139A (en) * | 2019-07-15 | 2019-10-18 | 上海交通大学 | Bearing group Pre strained state appraisal procedure and inner hole torque measurement connector |
| CN110346139B (en) * | 2019-07-15 | 2020-07-14 | 上海交通大学 | Bearing set pre-tightening state evaluation method |
| CN110823567A (en) * | 2019-08-23 | 2020-02-21 | 人本集团有限公司 | Self-aligning ball bearing swing moment detection device |
| CN114060406A (en) * | 2020-08-05 | 2022-02-18 | 耐世特汽车***（苏州）有限公司 | Method and device for setting locking shaft by eliminating bearing play |
| CN111999059A (en) * | 2020-09-02 | 2020-11-27 | 洛阳轴承研究所有限公司 | Device for testing bearing slipping rate and testing system using device |
| CN111855207A (en) * | 2020-09-04 | 2020-10-30 | 中国人民解放军陆军装甲兵学院 | Self-lubricating joint bearing friction wear life testing machine |
| CN113447176A (en) * | 2021-06-17 | 2021-09-28 | 人本股份有限公司 | Double-half outer ring bearing friction torque detection device |
| CN113685434A (en) * | 2021-08-24 | 2021-11-23 | 洛阳轴承研究所有限公司 | Control method and measuring instrument for pretightening force of counter bearing |
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