CN208780605U - Friction coefficient measuring apparatus under the conditions of a kind of variable working condition - Google Patents
Friction coefficient measuring apparatus under the conditions of a kind of variable working condition Download PDFInfo
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- CN208780605U CN208780605U CN201821280320.7U CN201821280320U CN208780605U CN 208780605 U CN208780605 U CN 208780605U CN 201821280320 U CN201821280320 U CN 201821280320U CN 208780605 U CN208780605 U CN 208780605U
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Abstract
The utility model discloses friction coefficient measuring apparatus under the conditions of a kind of variable working condition, and including the cabinet being mounted on bottom plate and lower slide unit, screw mechanism is equipped between lower slide unit and bottom plate；Motor and abutment sleeve are housed in cabinet vertical plates on both sides, friction dish axle is set in abutment sleeve, the dish axle right end that rubs is connected with frictional disk by frictional connection part；Friction dish axle left end is connect with motor drive；Spiro rod support and lower slide unit are housed, edge is axially arranged with afterburner screw in spiro rod support, and upper slide unit top surface is fixed with load baffle in lower slide unit；Afterburner screw passes sequentially through steel ball one, cushion block one, normal force transducer and locating piece one and holds out against with load baffle；Upper slide unit top surface is set with rotating shaft by revolving support, and rotating shaft is connected with friction head by balance staff；Sliding sleeve is set on balance staff interlude circumference, sliding sleeve passes sequentially through steel ball two, cushion block two, tangential force snesor, locating piece two and is supported in upper slide unit.Utility model device, compact-sized, measurement is accurate.
Description
Technical field
The utility model belongs to detection device technical field, is related to friction coefficient measuring apparatus under the conditions of a kind of variable working condition.
Background technique
Coefficient of friction is the important parameter for calculating frictional force, with the difference of friction pairing material, medium, speed etc., is rubbed
Wiping coefficient will also vary widely, and coefficient of friction generally has to determine by testing, therefore establishing one kind can be fast
The device of coefficient of friction is of great significance under the conditions of the variable working condition such as speed test friction speed, friction pairing material, medium.
Traditional friction coefficient measurement equipment be using an inclined-plane slideway, by change slideway tilt angle make test specimen with
Different speed slide, to measure the coefficient of friction between test specimen and slideway.The sliding speed and pressure of this method are difficult to
It is adjusted in larger range, the relationship between the parameters such as research coefficient of friction and speed, friction pairing material, medium is brought tired
It is difficult.Therefore, need to develop it is a kind of can adapt to differentiated friction pairing material, different pressures, speed, lubricant medium etc. under the conditions of
Coefficient of friction detection device.
Utility model content
The purpose of the utility model is to provide friction coefficient measuring apparatus under the conditions of a kind of variable working condition, solve the prior art
Friction coefficient measurement mode it is single, the problem of relative friction speed, pressure are difficult to effectively adjust, bad adaptability.
The technical solution adopted in the utility model is, friction coefficient measuring apparatus under the conditions of a kind of variable working condition, including cabinet
And lower slide unit, cabinet are fixedly mounted on the plate upper surface left side, lower slide unit lower surface is slidably mounted on by a pair of of lower guideway pair
On two long boss on the right of plate upper surface, screw mechanism is provided between lower slide unit and bottom plate；
It is fixedly installed with motor in the left side vertical plate of cabinet, is fixedly installed with abutment sleeve in the right side vertical plate of cabinet, it is fixed
By two groups of bearing holder (housing, cover)s equipped with friction dish axle in the barrel bore of position, friction dish axle right end is fixedly mounted frictional disk connector, rubs
It wipes connector right side and frictional disk is installed；The dish axle left end that rubs passes through the transmission shaft integrally connected of shaft coupling and motor；
It is fixedly installed with spiro rod support on the right of lower slide unit upper surface, it is axially disposed in spiro rod support to have afterburner screw, under
The slide unit upper surface left side is provided with the upper rail pair of a pair of of axial direction, this is to being slidably fitted with upper slide unit in upper rail pair；Upper slide unit
Load baffle is fixed on the right of top surface；Afterburner screw pass sequentially through steel ball one, cushion block one, normal force transducer and locating piece one with
Load baffle holds out against contact；
A pair of of revolving support is fixed among upper slide unit top surface, this is returned to lateral rotating shaft is set in revolving support
Shaft is fixedly connected with balance staff right end；Balance staff left end is fixedly installed with friction head；It is set with sliding sleeve on balance staff interlude circumference,
Sliding sleeve lower part passes sequentially through steel ball two, cushion block two, tangential force snesor, locating piece two and is supported in upper slide unit.
Friction coefficient measuring apparatus under the conditions of the variable working condition of the utility model, it is further characterized in that:
The afterburner screw, steel ball one, cushion block one, normal force transducer, locating piece one are located on same axis.
The steel ball two, cushion block two, tangential force snesor, locating piece two are located on same axis.
The transmission shaft and abutment sleeve of the motor are coaxially disposed, and friction head axial line is coaxially set with balance staff axial line
It sets.
The balance staff is vertical with rotating shaft.
The screw mechanism includes lead screw and screw, and lead screw is connect with screw screw-driven, and lead screw passes through two installations
Seat is arranged on bottom plate, and screw is fixed on the bottom surface of lower slide unit.
The utility model has the beneficial effects that one such friction material is fabricated to a frictional disk, it will be another
Friction material is fabricated to the cylindrical friction head an of smaller size；Driving friction disc spins, press friction head connect with frictional disk
Touching generates frictional force, and the contact pressure between friction head and frictional disk can be adjusted freely, when the disk rotating speed that rubs is certain, due to
The position radius of frictional disk locating for friction head is different and keeps its relative friction speed also different, thus by friction head in frictional disk
On different radial positions freely adjust friction velocity；When motor speed is adjusted, relative friction speed can be made to reach one
Very wide adjustable range.Frictional force, pressure, speed can be measured by different sensors.Furthermore it is also possible to friction head with
Different lubricant mediums is added between frictional disk, obtains differentiated friction pairing material, lubricant medium, friction speed, different pressures
Under coefficient of friction, provide a kind of detection approach easily and effectively to solve friction coefficient measurement under the conditions of variable working condition.
Detailed description of the invention
Fig. 1 is the structural front view of the utility model measuring device；
Fig. 2 is the local structure top view of the utility model measuring device；
Fig. 3 is friction measurement schematic diagram calculation.
In figure, 1. afterburner screws, 2. spiro rod supports, 3. steel balls one, 4. cushion blocks one, 5. normal force transducers, 6. locating pieces
One, 7. load baffles, 8. revolving supports, 9. rotating shafts, 10. balance staffs, 11. sliding sleeves, 12. steel balls two, 13. cushion blocks two, 14. is tangential
Force snesor, 15. locating pieces two, 16. friction heads, 17. frictional disks, 18. frictional disk connectors, 19. friction dish axles, 20. positioning
Sleeve, 21. locking nuts, 22. shaft couplings, 23. cabinets, 24. motors, 25. upper slide units, 26. upper rail pairs, 27. lower slide units,
28. lower guideway pair, 29. bottom plates, 30. lead screws, 31. screws.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
In following context description, positional relationship is subject to shown in Fig. 1 up and down, actual installation position and so on.
Left and right directions in Fig. 2 is X to up and down direction is Y-direction.
Referring to Fig.1, the structure of Fig. 2, the utility model measuring device are, including cabinet 23 and lower slide unit 27, and cabinet 23 is solid
Dingan County is mounted in the 29 upper surface left side of bottom plate, and 27 lower surface of lower slide unit passes through a pair of of lower guideway pair 28 and is slidably mounted on table on bottom plate 29
On two long boss on the right of face, screw mechanism is provided between lower slide unit 27 and bottom plate 29；
It is fixedly installed with motor 24 in the left side vertical plate of cabinet 23, is fixedly installed with positioning sleeve in the right side vertical plate of cabinet 23
Cylinder 20, the transmission shaft and abutment sleeve 20 of motor 24 are coaxially disposed；It is equipped with and is rubbed by two groups of bearing holder (housing, cover)s in 20 inner cavity of abutment sleeve
Dish axle 19 is wiped, frictional disk connector 18 is fixedly mounted in friction 19 right end of dish axle, and 18 right side of frictional connection part is equipped with friction
Disk 17, frictional disk 17 are detachable；19 left end of dish axle that rubs passes through locking nut 21, the transmission shaft one of shaft coupling 22 and motor 24
Body connection, locking nut 21 realize axially fastening for friction dish axle 19；The transmission shaft of motor 24 passes through shaft coupling 22, friction dish axle
19, frictional disk connector 18 drives frictional disk 17 to carry out rotary motion；
It is fixedly installed with spiro rod support 2 on the right of 27 upper surface of lower slide unit, it is axially disposed in spiro rod support 2 to have afterburner screw
1, the 27 upper surface left side of lower slide unit is provided with the upper rail pair 26 of a pair of axial (X to or left and right directions), this is to upper rail pair 26
In be slidably fitted with upper slide unit 25；Load baffle 7 is fixed on the right of 25 top surface of upper slide unit；Afterburner screw 1 passes sequentially through steel ball one
3, cushion block 1, normal force transducer 5 and locating piece 1 hold out against and contact with load baffle 7, push upper slide unit 25 along X to moving
(left and right directions or axial), the motive force that afterburner screw 1 is held out against passes through 5 the real time measure of normal force transducer, wherein afterburner screw
1, steel ball 1, cushion block 1, normal force transducer 5, locating piece 1 are located on same axis；
Referring to Fig. 2, it is fixed with a pair of of revolving support 8 among 25 top surface of upper slide unit, this is to being set with transverse direction in revolving support 8
Rotating shaft 9, rotating shaft 9 can rotate in revolving support 8, and rotating shaft 9 is fixedly connected with 10 right end of balance staff, balance staff 10 with return
Shaft 9 is vertical；10 left end of balance staff is fixedly installed with friction head 16, and 16 axial line of friction head is coaxially set with 10 axial line of balance staff
It sets；Sliding sleeve 11 is set on 10 interlude circumference of balance staff, 11 lower part of sliding sleeve passes sequentially through steel ball 2 12, cushion block 2 13, tangential force
Sensor 14, locating piece 2 15 are supported in upper slide unit 25；It needs to keep afterburner screw 1 and balance staff 10 coaxial in measurement process,
And balance staff 10 is vertical with 17 surface of frictional disk.
Afterburner screw 1 pushes upper slide unit 25 to move left and right along X by load baffle 7, to drive balance staff 10 along X to shifting
It is dynamic, realize that friction head 16 is contacted with holding out against for frictional disk 17；The normal pressure that afterburner screw 1 applies is measured by normal force transducer 5,
Generated frictional force is measured by tangential force snesor 14.
Referring to Fig. 2, screw mechanism includes lead screw 30 and screw 31, and lead screw 30 is connect with 31 screw-driven of screw, lead screw 30
It is arranged on bottom plate 29 by two mounting bases, screw 31 is fixed on the bottom surface of lower slide unit 27.
Rotational lead screw 30 drives lower slide unit 27 along 29 transverse shifting of bottom plate, so that friction head 16 is moved along Y-direction by screw 31
It is dynamic, thus realize the stepless speed regulation of the friction velocity under 17 revolving speed permanence condition of frictional disk between friction head 16 and frictional disk 17,
Facilitate testing and control.
Therefore friction head 16 is supported by lever construction, friction head 16 realizes X by upper slide unit 25 and lower slide unit 27
To and Y-direction it is mobile, pressure size is changed to driving by X；It is driven by Y-direction and changes radial position, and then change friction velocity.
The operating process of utility model device is:
One such friction material is made as frictional disk 17 by step 1), and another friction material is made as smaller ruler
The friction head 16 of very little cylindrical shape；
Step 2) starts motor 24, and frictional disk 17 rotates, and friction head 16 does not rotate；In the rotation process of frictional disk 17,
Afterburner screw 1 is turned forward, and 1 front end of afterburner screw is pushed up by steel ball 1, cushion block 1, normal force transducer 5, locating piece 1
Tight load baffle 7, load baffle 7 drive upper slide unit 25 and friction head 16 to hold out against with frictional disk 17 forward again and contact, i.e. friction head
16 contact generation normal pressure (contact pressure) with frictional disk 17；Friction head 16 and frictional disk are adjusted by rotation afterburner screw 1
17 normal pressure reads the numerical value of normal force transducer 5, which is exactly the normal pressure that friction head 16 is withstood on frictional disk 17,
Using coefficient of friction calculation formula, and then obtain friction head 16 and coefficient of friction of the frictional disk 17 under the conditions of different pressures；
Step 3) keeps the velocity of rotation of motor 24 constant, and the lateral position of lower slide unit 27 is adjusted by lead screw 30, makes to rub
The centre of gyration of rubbing head 16 and frictional disk 17 generates eccentric distance, due to the radial position locating on frictional disk 17 of friction head 16
For difference to form different friction velocities, frictional force caused by friction head 16 and frictional disk 17 passes through tangential force snesor 14
Reading, conversion and coefficient of friction calculation formula in conjunction with lever principle obtain the coefficient of friction under the conditions of friction speed；
The velocity of rotation for continuing adjusting motor 24, makes friction head 16 and the relative friction speed of frictional disk 17 reach one more
Wide range.
Step 4) adds different lubricant mediums from the contact surface of frictional disk 17 in friction head 16, obtains different lubricant mediums
Under the conditions of coefficient of friction；
Step 5) on the basis of step 1)-step 4), changes above-mentioned friction by single or combination and matches material respectively
Material, lubricant medium, velocity of rotation, pressure measure the normal pressure number for acting on 17 surface of frictional disk by normal force transducer 5
Value is read by tangential force snesor 14 and extrapolates practical frictional force based on lever principle, public by the calculating of coefficient of friction
Formula, under the conditions of obtaining friction head 16 and 17 differentiated friction pairing material of frictional disk, lubricant medium, friction speed, different pressures
Coefficient of friction.
Pass through formula f=f referring to Fig. 3, frictional force f1×l1/ l is solved, wherein f is frictional force, f1For tangential force snesor
14 readings, l are distance of the centre of gyration of balance staff 10 to 17 surface of frictional disk, l1It is passed for the centre of gyration of balance staff 10 to tangential force
The distance of 14 axis of sensor.
Normal force transducer 5 measures normal pressure N, then friction coefficient μ is solved by formula μ=f/N.
Claims (6)
1. friction coefficient measuring apparatus under the conditions of a kind of variable working condition, which is characterized in that including cabinet (23) and lower slide unit (27), case
Body (23) is fixedly mounted on bottom plate (29) upper surface left side, and lower slide unit (27) lower surface passes through a pair of of lower guideway secondary (28) sliding peace
On two long boss on the right of bottom plate (29) upper surface, lead screw machine is provided between lower slide unit (27) and bottom plate (29)
Structure；
It is fixedly installed in the left side vertical plate of cabinet (23) motor (24), is fixedly installed with positioning in the right side vertical plate of cabinet (23)
Sleeve (20), by two groups of bearing holder (housing, cover)s equipped with friction dish axle (19) in abutment sleeve (20) inner cavity, rub dish axle (19) right end
It is fixedly mounted frictional disk connector (18), frictional disk connector (18) right side is equipped with frictional disk (17)；It rubs dish axle (19)
Left end passes through locking nut (21), the transmission shaft integrally connected of shaft coupling (22) and motor (24)；
It is fixedly installed with spiro rod support (2) on the right of lower slide unit (27) upper surface, it is axially disposed in spiro rod support (2) to have reinforcing spiral shell
Bar (1), the upper rail that lower slide unit (27) upper surface left side is provided with a pair of of axial direction is secondary (26), this is to sliding in upper rail secondary (26)
Upper slide unit (25) are installed；Load baffle (7) is fixed on the right of upper slide unit (25) top surface；Afterburner screw (1) passes sequentially through steel ball
One (3), cushion block one (4), normal force transducer (5) and locating piece one (6) hold out against with load baffle (7) and contact；
A pair of of revolving support (8) are fixed among upper slide unit (25) top surface, this is to being set with lateral revolution in revolving support (8)
Axis (9), rotating shaft (9) are fixedly connected with balance staff (10) right end；Balance staff (10) left end is fixedly installed with friction head (16)；Balance staff
(10) it is set on interlude circumference sliding sleeve (11), sliding sleeve (11) lower part passes sequentially through steel ball two (12), cushion block two (13), tangential
Force snesor (14), locating piece two (15) are supported on upper slide unit (25).
2. friction coefficient measuring apparatus under the conditions of variable working condition according to claim 1, which is characterized in that the reinforcing spiral shell
Bar (1), steel ball one (3), cushion block one (4), normal force transducer (5), locating piece one (6) are located on same axis.
3. friction coefficient measuring apparatus under the conditions of variable working condition according to claim 1, which is characterized in that the steel ball two
(12), cushion block two (13), tangential force snesor (14), locating piece two (15) are located on same axis.
4. friction coefficient measuring apparatus under the conditions of variable working condition according to claim 1, which is characterized in that the motor
(24) transmission shaft and abutment sleeve (20) is coaxially disposed, and friction head (16) axial line and balance staff (10) axial line are coaxially disposed.
5. friction coefficient measuring apparatus under the conditions of variable working condition according to claim 1, which is characterized in that the balance staff
(10) vertical with rotating shaft (9).
6. friction coefficient measuring apparatus under the conditions of variable working condition according to claim 1, which is characterized in that the lead screw machine
Structure includes lead screw (30) and screw (31), and lead screw (30) is connect with screw (31) screw-driven, and lead screw (30) passes through two installations
Seat is arranged on bottom plate (29), and screw (31) is fixed on the bottom surface of lower slide unit (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821280320.7U CN208780605U (en) | 2018-08-09 | 2018-08-09 | Friction coefficient measuring apparatus under the conditions of a kind of variable working condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821280320.7U CN208780605U (en) | 2018-08-09 | 2018-08-09 | Friction coefficient measuring apparatus under the conditions of a kind of variable working condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208780605U true CN208780605U (en) | 2019-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821280320.7U Expired - Fee Related CN208780605U (en) | 2018-08-09 | 2018-08-09 | Friction coefficient measuring apparatus under the conditions of a kind of variable working condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208780605U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112588872A (en) * | 2020-10-29 | 2021-04-02 | 浙江合众新能源汽车有限公司 | Device and method for measuring friction coefficient of multi-working-condition metal plate |
| CN113670757A (en) * | 2021-07-27 | 2021-11-19 | 广东工业大学 | Friction wear detection device |
-
2018
- 2018-08-09 CN CN201821280320.7U patent/CN208780605U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112588872A (en) * | 2020-10-29 | 2021-04-02 | 浙江合众新能源汽车有限公司 | Device and method for measuring friction coefficient of multi-working-condition metal plate |
| CN113670757A (en) * | 2021-07-27 | 2021-11-19 | 广东工业大学 | Friction wear detection device |
| WO2023004778A1 (en) * | 2021-07-27 | 2023-02-02 | 广东工业大学 | Friction wear testing device |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190423 Termination date: 20200809 |
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| CF01 | Termination of patent right due to non-payment of annual fee |