CN105954017B - A kind of measuring device of planetary roller screw pair moment of friction - Google Patents
A kind of measuring device of planetary roller screw pair moment of friction Download PDFInfo
- Publication number
- CN105954017B CN105954017B CN201610303850.8A CN201610303850A CN105954017B CN 105954017 B CN105954017 B CN 105954017B CN 201610303850 A CN201610303850 A CN 201610303850A CN 105954017 B CN105954017 B CN 105954017B
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- Prior art keywords
- nut
- bearing
- support base
- pressure sensor
- guide rail
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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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a kind of measuring devices of planetary roller screw pair moment of friction to realize the measurement of moment of friction using the cooperation of bottom plate, jack and pull pressure sensor.The load to planetary roller screw pair is realized by spring loads；By the inclination angle of jack regulating base board, the measurement of moment of friction is realized.Support base is located on guide rail, and is slid back and forth along guide rail；Pull pressure sensor is mounted between nut and support base, and pull pressure sensor one end is connect with support base, and the other end is connect with nut, and frictional force is integrated for survey calculation；When leading screw rotates, leading screw drives nut for linear motion, simultaneously because pull pressure sensor connect limitation nut rotation with nut, while measuring frictional force size.Spring is embedded in a set of cups, installed thrust ball bearing between a set of cups and nut, can avoid spring and nut is in direct contact generation frictional force, influence final measurement result.Measuring device is simple in structure, versatile, safe and reliable.
Description
Technical field
The present invention relates to the measuring devices of planetary roller screw pair, rub specifically, being related to a kind of planetary roller screw pair
Wipe the measuring device of torque.
Background technology
For the performance of planetary roller screw pair, moment of friction is one of its important factor in order, therefore frictional force
And the measurement of moment of friction plays an important roll the performance evaluation of planetary roller screw pair.Friction generates a large amount of in transmission
The raising of heat, temperature reduces lubricant effect, the loss of energy when causing to be driven, and then reduces the performance of planetary roller screw pair,
Frictional heat has become an important factor for influencing planetary roller screw pair correlated performance, therefore is measured after at it
Different operating mode lower planet roller screw pair moment of frictions are of great significance.
A kind of " preload adjustable rolling ball screw pair measurement of friction torque dress is disclosed in patent of invention CN204269365u
Set ", which can only only measure a kind of moment of friction of ball screw assembly, under operating mode, do not load, also do not have
The variation at inclination angle.It there is no the related dress for measuring load condition lower planet roller screw pair moment of friction under different angle at present
It sets, therefore the measuring device has practical significance and effect.
Invention content
In order to avoid the shortcomings of the prior art, the present invention proposes a kind of measurement of planetary roller screw pair moment of friction
Device.The measuring device is realized by the cooperation of bottom plate, jack and pull pressure sensor and measures different loading condition lower planets
The moment of friction of roller screw pair；Measuring device is simple in structure, versatile, safe and reliable.
The technical solution adopted by the present invention to solve the technical problems is:The measurement of planetary roller screw pair moment of friction fills
It sets including testing stand, jack, motor, big belt wheel, small pulley, synchronous belt, wherein further including bottom plate, baffle, bearing spider, bullet
Spring, nut, pull pressure sensor, support base, supporting block, guide rail, bearing block, leading screw, deep groove ball bearing, a set of cups, thrust ball axis
It holding, flange, oscillating bearing, the guide rail is fixed on bottom plate, and coaxial with bottom plate, and there are supporting block in the both sides of guide rail respectively,
Supporting block installation parallel with guide rail, baffle is with bearing seat in the both ends of guide rail；The support base is located above guide rail, support base
It is slid back and forth with guide rail cooperation；Leading screw passes through support base, leading screw one end to be connect with baffle, and the other end passes through bearing block and big belt wheel
It is connected；Motor is fixed on the end of bottom plate, and motor output shaft is connected with small pulley, and big belt wheel is connected with small pulley by synchronous belt
It connects；On leading screw between baffle and support base, spring one end contacts the spring pocket with baffle, the insertion of the spring other end
In a set of cups, thrust ball bearing is installed between a set of cups and nut, thrust ball bearing is interference fitted with nut and a set of cups respectively；Institute
It states bottom plate one end and is connect with two bearing spiders for being fixed on testing stand upper end, bottom plate is rotated upwardly and downwardly around bearing spider, bottom plate
Other end bottom is equipped with oscillating bearing and cushion block, and jack fixes on the ground positioned at testing stand side end, jack end
It is connect with oscillating bearing, by the inclination angle of jack regulating base board, measures the planetary roller screw pair under different angle operating mode
Moment of friction；The pull pressure sensor is two, and two pull pressure sensor are located between nut and flange, and flange is solid
It is scheduled on support base inside upper part, pull pressure sensor one end is threadedly coupled with support base flange, and the other end passes through screw rod and nut
Connection, leading screw drive nut linear motion, frictional force are measured by pull pressure sensor.
The testing stand side end is axially provided with U-shaped mouth, and jack passes through U-shaped mouth to be installed with oscillating bearing cooperation.
The leading screw, a set of cups, nut and support base, bearing block are co-axially mounted, and are located at together with jack and oscillating bearing
In one vertical plane.
Bearing block and baffle are separately installed with deep groove ball bearing.
Advantageous effect
A kind of measuring device of planetary roller screw pair moment of friction proposed by the present invention, leading screw is in difference when for load
Under inclination angle, using the cooperation of bottom plate, jack and pull pressure sensor, the measurement of moment of friction is realized；Pass through simple spring
Load realizes that the load to planetary roller screw pair realizes the measurement of moment of friction by the inclination angle of jack regulating base board；It should
Measuring device is simple in structure, versatile, safe and reliable.
The measuring device of planetary roller screw pair moment of friction of the present invention, including realize the branch of the support and load to leading screw
Support part part and loading component, for the regulating base board and regulating member at main body inclination angle, pull pressure sensor and support base.Support base
It is placed on guide rail, support base slides back and forth on guide rail；Loading device provides load by spring, regulating member by jack and
Oscillating bearing forms, and pull pressure sensor is mounted between nut and support base, pull pressure sensor one end and support base flange
It is threadedly coupled, the pull pressure sensor other end is connect with nut, and frictional force is integrated for survey calculation；When leading screw rotates, silk
Thick stick drives nut to move along a straight line, simultaneously because pull pressure sensor connect limitation nut rotation with nut, while measuring and rubbing
Power size is wiped, and then calculates moment of friction size.Spring is embedded in a set of cups, is prevented it from radial movement occurs, is ensured it
The installed thrust ball bearing between axial linear movement, a set of cups and nut, thrust ball bearing are interference fitted with nut and a set of cups, with
It avoids spring and nut from being in direct contact generation frictional force, influences final measurement result.
The measuring device of planetary roller screw pair moment of friction of the present invention has simple in structure, versatile, safe and reliable
The characteristics of；Measurement suitable for different operating mode lower planet roller screw pair moment of frictions.
Description of the drawings
A kind of measuring device of planetary roller screw pair moment of friction of the present invention is made with embodiment below in conjunction with the accompanying drawings
It is further described.
Fig. 1 is the measuring device structural schematic diagram of planetary roller screw pair moment of friction of the present invention.
Fig. 2 is the support section schematic diagram of measuring device of the present invention.
Fig. 3 is the loading section schematic diagram of measuring device of the present invention.
Fig. 4 is the measurement partial schematic diagram of measuring device of the present invention.
Fig. 5 is the inclination angle adjusting structure schematic diagram of measuring device of the present invention.
In figure:
1. 6. nut of testing stand 2. bottom plate, 3. bearing spider, 4. baffle, 5. spring, 7. pull pressure sensor 8. supports
15. synchronous belt of seat 9. supporting block, 10. guide rail, 11. jack, 12. motor, 13. big belt wheel, 14. small pulley, 16. bearing block
17. 21. flange of leading screw 18. deep groove ball bearing, 19. a set of cups, 20. thrust ball bearing, 22. oscillating bearing
Specific implementation mode
The present embodiment is a kind of measuring device of planetary roller screw pair moment of friction.
The working method of the measuring device of the present embodiment planetary roller screw pair moment of friction:
When work starts, planetary roller screw pair is placed on, and passes through the inclination angle of jack regulating base board, Jin Ergai
Become the inclination angle of leading screw；Then, a fixed angles angle value is kept it in.Motor is opened, power is transferred to silk by belt wheel mechanism
Thick stick, leading screw rotate around own axes and nut are driven to move along a straight line；When nut moves along a straight line, it is added by spring
It carries, nut not only has linear motion itself rotation simultaneously, but prevents its rotation due to pull pressure sensor when rotating, and makes nut only
Keep linear motion without own rotation, it is the suffered friction of nut that pull pressure sensor, which prevents the power suffered by nut rotation,
Power show that moment of friction, moment of friction are the moment of friction of planetary roller screw pair multiplied by with the arm of force；The measuring device can
Measure moment of friction of the load condition lower leading screw relative to experiment table top different angle when.
Refering to fig. 1~Fig. 5, the measuring device of the present embodiment planetary roller screw pair moment of friction, by testing stand 1, very heavy
Top 11, motor 12, big belt wheel 13, small pulley 14, synchronous belt 15 and bottom plate 2, bearing spider 3, spring 5, nut 6, are drawn baffle 4
Pressure sensor 7, support base 8, supporting block 9, guide rail 10, bearing block 16, leading screw 17, deep groove ball bearing 18, a set of cups 19, thrust ball
Bearing 20, flange 21, oscillating bearing 22 form；Testing stand 1 provides support for bottom plate 2 and other each components.Support base 8 is mounted on
Above guide rail 10, support base 8 coordinates front and back slide axially with guide rail 10.Guide rail 10 is fixed on position among 2 upper surface of bottom plate,
And with 2 coaxial installation of bottom plate；The both sides of guide rail 10 are respectively fixed with supporting block 9, and supporting block 9 is installed in parallel in guide rail 10
On bottom plate 2, baffle 4 is mounted on bearing block 16 on the bottom plate 2 at 10 both ends of guide rail.Leading screw 17 passes through bearing spider 3, leading screw 17 1
End is connect with baffle 4, and 17 other end of leading screw is fixedly connected by bearing block 16 with big belt wheel 13, and motor 12 is fixed on bottom plate 2
End, small pulley 14 are fixedly connected with motor output shaft, and big belt wheel 13 connect transmission with small pulley 14 by synchronous belt 15；Electricity
Machine 12 provides power for device.Spring 5 is sleeved on leading screw 17 between baffle 4 and support base 8,5 one end of spring and gear
Plate 4 contacts, and 5 other end of spring is embedded in a set of cups 19, is connected using thrust ball bearing 20 between a set of cups 19 and nut 6, thrust
Ball bearing 20 is interference fitted with nut 6 and a set of cups 19 respectively.By 19 fixed spring 5 of a set of cups, can avoid direct when spring 5 loads
Nut 6 is contacted, prevents it from radial movement occurs, ensures that it, in axial linear motion, prevents spring 5 from directly being connect with nut 6
The last measurement result of the friction effects that are generated when tactile.When leading screw 17 rotates, and nut 6 is driven to be moved along a straight line, spring 17
It can be loaded.Two bearing spiders 3 are symmetrically mounted on the end of testing stand 1,2 one end of bottom plate and are fixed on testing stand 1
Two bearing spiders 3 of end are connected by shaft, and bottom plate 2 is rotated upwardly and downwardly around bearing spider 3, and 2 other end bottom of bottom plate is fixed
There are oscillating bearing 22 and cushion block, jack 11, which is fixedly mounted on ground, is located at 1 side end of testing stand, 1 side end axis of testing stand
To U-shaped mouth is provided with, jack 11 passes through U-shaped mouth to be installed with the cooperation of oscillating bearing 22；The pressurization elongation of jack 11 raises upwards
One end of bottom plate 2, bottom plate 2 are rotated around two bearing spiders 3, are increased the inclination angle between bottom plate 2 and testing stand 1, are passed through jack
The inclination angle of 11 regulating base boards 2, the moment of friction of the planetary roller screw pair under survey calculation different angle operating mode.
Pull pressure sensor is two in the present embodiment, and two pull pressure sensor 7 are separately mounted to nut 6 and flange
Between 21, flange 21 is fixed on 8 inside upper part of support base, and 7 both ends of pull pressure sensor are machined with screw hole, pressure sensing respectively
7 one end of device is threadedly coupled with 8 flange of support base, and 7 other end of pulling force sensor is connect by screw rod with nut 6.When 17 band of leading screw
When dynamic nut 6 rotates, the pull pressure sensor 7 of 6 both sides of nut connection prevents nut 6 from rotating, and only keeps own axes direction
Linear motion, while the active force suffered by pull pressure sensor 7 is the frictional force suffered by nut 6, the arm of force is that pressure passes
To the distance of nut axis, frictional force is multiplied by the torque that the arm of force obtains for sensor 7 and 6 contact point of nut, which is planet rolling
The moment of friction of column lead screw pair.
The present embodiment install when, leading screw 17, a set of cups 19, nut 6 and support base 8, bearing block 16 are co-axially mounted, and with it is very heavy
Top 11 and oscillating bearing 22 are located in same vertical plane.It is separately installed with deep groove ball bearing 18 on bearing block 16 and baffle 4.
Claims (1)
1. a kind of measuring device of planetary roller screw pair moment of friction, including testing stand, jack, motor, big belt wheel, small band
Wheel, synchronous belt, bottom plate, baffle, bearing spider, spring, nut, pull pressure sensor, support base, supporting block, guide rail, bearing
Seat, leading screw, deep groove ball bearing, a set of cups, thrust ball bearing, flange and oscillating bearing, it is characterised in that:The guide rail is fixed on bottom
On plate, and it is coaxial with bottom plate, there are supporting block, supporting block installation parallel with guide rail, baffle and bearing block in the both sides of guide rail respectively
Positioned at the both ends of guide rail；The support base is located above guide rail, and support base slides back and forth with guide rail cooperation；Leading screw passes through support
Seat, leading screw one end are connect with baffle, and the other end is connected by bearing block and big belt wheel；Motor is fixed on the end of bottom plate, motor
Output shaft is connected with small pulley, and big belt wheel passes through synchronous band connection with small pulley；The spring pocket is located at baffle on leading screw
Between support base, spring one end is contacted with baffle, and the spring other end is embedded in a set of cups, is equipped with and is pushed away between a set of cups and nut
Power ball bearing, thrust ball bearing are interference fitted with nut and a set of cups respectively；Described bottom plate one end and it is fixed on testing stand upper end
The connection of two bearing spiders, bottom plate rotates upwardly and downwardly around bearing spider, and bottom plate other end bottom is equipped with oscillating bearing and cushion block,
Jack fixes on the ground positioned at testing stand side end, and jack end is connect with oscillating bearing, and bottom is adjusted by jack
The inclination angle of plate measures the moment of friction of the planetary roller screw pair under different angle operating mode；The pull pressure sensor is two,
Two pull pressure sensor are located between nut and flange, and flange is fixed on support base inside upper part, pull pressure sensor
One end is threadedly coupled with support base flange, and the other end is connect by screw rod with nut, and leading screw drives nut linear motion, passes through drawing
Pressure sensor measures frictional force；The testing stand side end is axially provided with U-shaped mouth, and jack passes through U-shaped mouth and oscillating bearing
Cooperation installation；The leading screw, a set of cups, nut and support base, bearing block are co-axially mounted, and are located at together with jack and oscillating bearing
In one vertical plane；Bearing block and baffle are separately installed with deep groove ball bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610303850.8A CN105954017B (en) | 2016-05-10 | 2016-05-10 | A kind of measuring device of planetary roller screw pair moment of friction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610303850.8A CN105954017B (en) | 2016-05-10 | 2016-05-10 | A kind of measuring device of planetary roller screw pair moment of friction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105954017A CN105954017A (en) | 2016-09-21 |
| CN105954017B true CN105954017B (en) | 2018-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610303850.8A Expired - Fee Related CN105954017B (en) | 2016-05-10 | 2016-05-10 | A kind of measuring device of planetary roller screw pair moment of friction |
Country Status (1)
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| CN (1) | CN105954017B (en) |
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| CN105954017A (en) | 2016-09-21 |
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