CN105954017A - Planetary roller screw pair friction torque measurement device - Google Patents

Planetary roller screw pair friction torque measurement device Download PDF

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Publication number
CN105954017A
CN105954017A CN201610303850.8A CN201610303850A CN105954017A CN 105954017 A CN105954017 A CN 105954017A CN 201610303850 A CN201610303850 A CN 201610303850A CN 105954017 A CN105954017 A CN 105954017A
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CN
China
Prior art keywords
nut
bearing
friction
base plate
measurement
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Application number
CN201610303850.8A
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Chinese (zh)
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CN105954017B (en
Inventor
佟瑞庭
刘更
张鹏涛
马尚君
张文杰
朱忠良
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西北工业大学
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Priority to CN201610303850.8A priority Critical patent/CN105954017B/en
Publication of CN105954017A publication Critical patent/CN105954017A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00Testing of machine parts

Abstract

The invention discloses a planetary roller screw pair friction torque measurement device. Friction torque measurement is realized by a base plate, a jack and a tension-compression sensor together. A planetary roller screw pair is loaded by a spring. The tilt angle of the base plate is adjusted by the jack to realize friction torque measurement. A support base is disposed on a guide rail, and slides front and back along the guide rail. The tension-compression sensor is installed between a nut and the support base, one end of the tension-compression sensor is connected with the support base, the other end is connected with the nut, and the tension-compression sensor is used to measure and calculate the comprehensive friction. When a screw rotates, the screw drives the nut to do linear motion, and the tension-compression sensor is connected with the nut and limits the rotation of the nut, and measures the size of friction. The spring is embedded into a retainer cup, and a thrust ball bearing is installed between the retainer cup and the nut, which can avoid the situation in which the spring and the nut directly contact each other to generate fiction to affect the final measurement result. The measurement device is simple in structure, highly universal, and safe and reliable.

Description

A kind of measurement apparatus of planetary roller screw pair moment of friction

Technical field

The present invention relates to the measurement apparatus of planetary roller screw pair, specifically, relate to a kind of planetary roller silk The measurement apparatus of thick stick friction force square.

Background technology

For the performance of planetary roller screw pair, moment of friction is one of its important factor in order, therefore The performance evaluation to planetary roller screw pair of measuring of frictional force and moment of friction has important function.In transmission Middle friction produces big calorimetric, the rising reduction lubricant effect of temperature, the loss of energy when causing transmission, and then Reducing the performance of planetary roller screw pair, frictional heat has become as affects planetary roller screw pair correlated performance Key factor, therefore after its extensively application, measure different operating mode lower planet roller screw pair moment of friction Significant.

Patent of invention CN204269365u discloses " a kind of pretension adjustable rolling ball screw pair moment of friction survey Amount device ", the moment of friction of ball screw assembly, under a kind of operating mode only can only be measured by this measurement apparatus, does not has There is loading, also there is no the change at inclination angle.There is no measurement load condition lower planet roller screw pair at present in difference The relevant apparatus of moment of friction under inclination angle, therefore this measurement apparatus has practical significance and effect.

Summary of the invention

The deficiency existed in order to avoid prior art, the present invention proposes a kind of planetary roller screw pair moment of friction Measurement apparatus.This measurement apparatus, by base plate, jack and the cooperation of pull pressure sensor, realizes measuring not Moment of friction with loading condition lower planet roller screw pair;Measurement apparatus simple in construction, highly versatile, peace Complete reliable.

The technical solution adopted for the present invention to solve the technical problems is: planetary roller screw pair moment of friction Measurement apparatus includes testing stand, jack, motor, big belt wheel, small pulley, Timing Belt, the most also includes Base plate, baffle plate, bearing spider, spring, nut, pull pressure sensor, support seat, bracer, guide rail, Bearing block, leading screw, deep groove ball bearing, a set of cups, thrust ball bearing, flange, oscillating bearing, described guide rail It is fixed on base plate, and coaxial with base plate, the both sides of guide rail have a bracer respectively, and a bracer is put down with guide rail Row is installed, and baffle plate and bearing seat are in the two ends of guide rail;Described support seat is positioned at above guide rail, support seat with Guide rail coordinates slide anteroposterior;Leading screw is through supporting seat, and leading screw one end is connected with baffle plate, and the other end passes through bearing Seat is connected with big belt wheel;Motor is fixed on the end of base plate, and motor output shaft is connected with small pulley, big belt wheel It is connected by Timing Belt with small pulley;Described spring housing is contained on leading screw at baffle plate and supports between seat, bullet Spring one end contacts with baffle plate, and the spring other end is embedded in a set of cups, is provided with thrust ball between a set of cups and nut Bearing, thrust ball bearing respectively with nut and a set of cups interference fit;Described base plate one end be fixed on testing stand Two bearing spiders of upper end connect, and base plate rotates upwardly and downwardly around bearing spider, install bottom the base plate other end Having oscillating bearing and cushion block, jack fixes on the ground and is positioned at testing stand side end, jack end and pass Bearings connects, and by the inclination angle of jack regulating base board, measures the planetary roller silk under different angle operating mode The moment of friction that thick stick is secondary;Described pull pressure sensor is two, and two pull pressure sensor lay respectively at nut And between flange, flange is fixed on support seat inside upper part, pull pressure sensor one end and support seat flange spiral shell Stricture of vagina connects, and the other end is connected with nut by screw rod, and leading screw drives nut linear motion, is passed by pressure Sensor measures frictional force.

Described testing stand side end axially has U-shaped mouth, and jack coordinates peace through U-shaped mouth with oscillating bearing Dress.

Described leading screw, a set of cups, nut are co-axially mounted with support seat, bearing block, and with jack and oscillating bearing It is positioned at same vertical plane.

Bearing block and baffle plate are separately installed with deep groove ball bearing.

Beneficial effect

The measurement apparatus of a kind of planetary roller screw pair moment of friction that the present invention proposes, for leading screw when loading Under different angle, utilize the cooperation of base plate, jack and pull pressure sensor, realize the measurement of moment of friction; The loading realized planetary roller screw pair is loaded, by inclining of jack regulating base board by simple spring Angle, it is achieved the measurement of moment of friction;This measurement apparatus simple in construction, highly versatile, safe and reliable.

The measurement apparatus of planetary roller screw pair moment of friction of the present invention, including realizing the support to leading screw and adding The support member carried and loading component, the regulation parts for regulating base board and main body inclination angle, pressure sensing Device and support seat.Support seat to be placed on guide rail, support seat slide anteroposterior on guide rail;Charger is by bullet Spring provide load, regulation parts be made up of jack and oscillating bearing, pull pressure sensor be arranged on nut and Supporting between seat, threaded with supporting seat flange in pull pressure sensor one end, the pull pressure sensor other end It is connected with nut, for the comprehensive frictional force of survey calculation;When leading screw rotates, leading screw drives nut to carry out directly Line moves, simultaneously because pull pressure sensor is connected restriction nut rotation with nut, measures frictional force big simultaneously Little, and then calculate moment of friction size.Spring is embedded in a set of cups, prevents it from movement radially occurring, Ensure its installed thrust ball bearing between axial linear movement, a set of cups and nut, thrust ball bearing and nut With a set of cups interference fit, to avoid spring directly to contact generation frictional force with nut, affect final measurement knot Really.

The measurement apparatus of planetary roller screw pair moment of friction of the present invention, has simple in construction, highly versatile, peace Full feature reliably;It is applicable to the measurement of different operating mode lower planet roller screw pair moment of friction.

Accompanying drawing explanation

The measurement dress of planetary roller screw pair moment of friction a kind of to the present invention with embodiment below in conjunction with the accompanying drawings Put and be described in further detail.

Fig. 1 is the measurement apparatus structural representation of planetary roller screw pair moment of friction of the present invention.

Fig. 2 is the support section schematic diagram of measurement apparatus of the present invention.

Fig. 3 is the loading section schematic diagram of measurement apparatus of the present invention.

Fig. 4 is the measurement partial schematic diagram of measurement apparatus of the present invention.

Fig. 5 is the inclination angle adjusting structure schematic diagram of measurement apparatus of the present invention.

In figure:

1. testing stand 2. base plate 3. bearing spider 4. baffle plate 5. spring 6. nut 7. pull pressure sensor 8. supports seat 9. a bracer 10. guide rail 11. jack 12. motor 13. big belt wheel 14. small pulley 15. Timing Belt 16. bearing block 17. leading screw 18. deep groove ball bearing 19. a set of cups 20. thrust ball bearing 21. flange 22. oscillating bearings

Detailed description of the invention

The present embodiment is the measurement apparatus of a kind of planetary roller screw pair moment of friction.

The working method of the measurement apparatus of the present embodiment planetary roller screw pair moment of friction:

When work starts, planetary roller screw pair is placed on, by the inclination angle of jack regulating base board, And then change the inclination angle of leading screw;Then so that it is be maintained at a fixed angles angle value.Opening motor, power leads to Crossing belt wheel mechanism and be transferred to leading screw, leading screw rotates around own axes and drives nut to move along a straight line;At spiral shell During main line motion, spring loading it, nut does not only have linear motion and self rotates simultaneously, but Stop it to rotate due to pull pressure sensor during rotation, make nut only keep linear motion there is no own rotation, Pull pressure sensor stops the power suffered by nut rotation to be nut friction, then is multiplied by the arm of force, Going out moment of friction, moment of friction is i.e. the moment of friction of planetary roller screw pair;This measurement apparatus can be measured and add In the case of load, leading screw is relative to moment of friction during test table top different angle.

Refering to Fig. 1~Fig. 5, the measurement apparatus of the present embodiment planetary roller screw pair moment of friction, by testing stand 1, Jack 11, motor 12, big belt wheel 13, small pulley 14, Timing Belt 15 and base plate 2, baffle plate 4, axle Hold bearing 3, spring 5, nut 6, pull pressure sensor 7, support seat 8, bracer 9, guide rail 10, axle Bearing 16, leading screw 17, deep groove ball bearing 18, a set of cups 19, thrust ball bearing 20, flange 21, joint shaft Hold 22 compositions;Testing stand 1 provides for base plate 2 and other each parts and supports.Support seat 8 and be arranged on guide rail 10 Above, support seat 8 slides axially before and after coordinating with guide rail 10.Guide rail 10 is fixed in base plate 2 upper surface Between position, and installation coaxial with base plate 2;The both sides of guide rail 10 are respectively fixed with a bracer 9, a bracer 9 are installed in parallel on base plate 2 with guide rail 10, and baffle plate 4 and bearing block 16 are arranged on the end at guide rail 10 two ends On plate 2.Leading screw 17 is through bearing spider 3, and leading screw 17 one end is connected with baffle plate 4, and leading screw 17 other end leads to Crossing that bearing block 16 is fixing with big belt wheel 13 to be connected, motor 12 is fixed on the end of base plate 2, small pulley 14 Fixing with motor output shaft and be connected, big belt wheel 13 is connected transmission with small pulley 14 by Timing Belt 15;Motor 12 provide power for device.Spring 5 is sleeved on leading screw 17 at baffle plate 4 and supports between seat 8, spring 5 one end contact with baffle plate 4, and spring 5 other end is embedded in a set of cups 19, adopts between a set of cups 19 and nut 6 Connect with thrust ball bearing 20, thrust ball bearing 20 respectively with nut 6 and a set of cups 19 interference fit.Pass through A set of cups 19 fixes spring 5, and spring 5 can be avoided directly to contact nut 6 when loading, and prevents it from occurring radially Mobile, it is ensured that it is in axial linear motion, the friction produced when preventing spring 5 from directly contacting with nut 6 The measurement result that power impact is last.When leading screw 17 rotarily drive nut 6 move along a straight line time, spring 17 It can be loaded.Two bearing spiders 3 are symmetrically mounted on the end of testing stand 1, base plate 2 one end with Two bearing spiders 3 being fixed on testing stand 1 end are connected by rotating shaft, and base plate 2 is on bearing spider 3 Lower rotation, is fixed with oscillating bearing 22 and cushion block bottom base plate 2 other end, jack 11 is fixedly mounted on Being positioned at testing stand 1 side end on ground, testing stand 1 side end axially has U-shaped mouth, and jack 11 passes U-shaped mouth coordinates installation with oscillating bearing 22;Jack 11 pressurization elongation the most upwards raises one end of base plate 2, Base plate 2 rotates around two bearing spiders 3, strengthens the inclination angle between base plate 2 and testing stand 1, by very heavy Push up the inclination angle of 11 regulating base boards 2, the frictional force of the planetary roller screw pair under survey calculation different angle operating mode Square.

In the present embodiment, pull pressure sensor is two, and two pull pressure sensor 7 are separately mounted to nut 6 And between flange 21, flange 21 is fixed on support seat 8 inside upper part, and pull pressure sensor 7 two ends are respectively Being machined with screw, threadeding with supporting seat 8 flange in pull pressure sensor 7 one end, pulling force sensor 7 is another One end is connected with nut 6 by screw rod.When leading screw 17 drives nut 6 to rotate, nut 6 both sides connect Pull pressure sensor 7 stops nut 6 to rotate, and only keeps the linear motion in own axes direction, tension and compression simultaneously Active force suffered by force transducer 7 is i.e. the frictional force suffered by nut 6, and the arm of force is pull pressure sensor 7 With the distance of nut 6 contact point to nut axis, frictional force is multiplied by the moment that the arm of force draws, this moment is i.e. The moment of friction of planetary roller screw pair.

When the present embodiment is installed, leading screw 17, a set of cups 19, nut 6 are coaxially pacified with support seat 8, bearing block 16 Dress, and it is positioned at same vertical plane with jack 11 and oscillating bearing 22.On bearing block 16 and baffle plate 4 It is separately installed with deep groove ball bearing 18.

Claims (4)

1. a measurement apparatus for planetary roller screw pair moment of friction, including testing stand, jack, motor, Big belt wheel, small pulley, Timing Belt, it is characterised in that: also include base plate, baffle plate, bearing spider, spring, Nut, pull pressure sensor, support seat, bracer, guide rail, bearing block, leading screw, deep groove ball bearing, A set of cups, thrust ball bearing, flange, oscillating bearing, described guide rail is fixed on base plate, and coaxial with base plate To, the both sides of guide rail have a bracer respectively, and a bracer is installed with guide rail parallel, and baffle plate and bearing seat are in leading The two ends of rail;Described support seat is positioned at above guide rail, supports seat and coordinates slide anteroposterior with guide rail;Leading screw passes Supporting seat, leading screw one end is connected with baffle plate, and the other end is connected with big belt wheel by bearing block;Motor is fixed on The end of base plate, motor output shaft is connected with small pulley, and big belt wheel is connected by Timing Belt with small pulley;Institute Stating spring housing be contained on leading screw at baffle plate and support between seat, spring one end contacts with baffle plate, spring another End be embedded in a set of cups, thrust ball bearing is installed between a set of cups and nut, thrust ball bearing respectively with nut With a set of cups interference fit;Described base plate one end is connected with two bearing spiders being fixed on testing stand upper end, Base plate rotates upwardly and downwardly around bearing spider, is provided with oscillating bearing and cushion block bottom the base plate other end, and jack is solid Being scheduled on ground and be positioned at testing stand side end, jack end is connected with oscillating bearing, is regulated by jack The inclination angle of base plate, the moment of friction of the planetary roller screw pair under measurement different angle operating mode;Described pressure Sensor is two, and two pull pressure sensor lay respectively between nut and flange, and flange is fixed on support Seat inside upper part, pull pressure sensor one end threadeds with supporting seat flange, and the other end is by screw rod and spiral shell Female connection, leading screw drives nut linear motion, measures frictional force by pull pressure sensor.
The measurement apparatus of planetary roller screw pair moment of friction the most according to claim 1, it is characterised in that: Described testing stand side end axially has U-shaped mouth, and jack coordinates installation through U-shaped mouth with oscillating bearing.
The measurement apparatus of planetary roller screw pair moment of friction the most according to claim 1, it is characterised in that: Described leading screw, a set of cups, nut are co-axially mounted with support seat, bearing block, and are positioned at jack and oscillating bearing Same vertical plane.
The measurement apparatus of planetary roller screw pair moment of friction the most according to claim 1, it is characterised in that: Bearing block and baffle plate are separately installed with deep groove ball bearing.
CN201610303850.8A 2016-05-10 2016-05-10 A kind of measuring device of planetary roller screw pair moment of friction CN105954017B (en)

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

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Application Number Priority Date Filing Date Title
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CN105954017A true CN105954017A (en) 2016-09-21
CN105954017B CN105954017B (en) 2018-08-03

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106441882A (en) * 2016-11-26 2017-02-22 陕西理工学院 Bidirectional loading device of planetary roller screw pair and loading method
CN106568587A (en) * 2016-11-02 2017-04-19 上海航天设备制造总厂 Different-direction synchronous load test device and use method thereof
CN107284377A (en) * 2017-06-07 2017-10-24 深圳市奈士迪技术研发有限公司 A kind of new-energy automobile with Tire Friction self-checking function
CN108827870A (en) * 2018-03-29 2018-11-16 西北工业大学 A kind of friction test device and friction parameter test method of achievable vacuum microgravity environment simulation
CN108871765A (en) * 2018-07-11 2018-11-23 哈尔滨工业大学 One kind being used for planetary roller screw pair positioning accuracy and measurement of friction torque device
CN110006574A (en) * 2019-04-19 2019-07-12 济南大学 Ball Screw Pair Friction Moment measuring device
CN110441141A (en) * 2019-07-17 2019-11-12 山东大学 Novel stretching-shear testing maschine
CN110530637A (en) * 2019-08-29 2019-12-03 北京吾天科技有限公司 Planetary roller screw dynamic property general-utility test platform

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CN102620929A (en) * 2012-03-15 2012-08-01 南京理工大学 Device and method for testing precision retaining ability of ball screw assembly
CN202582897U (en) * 2012-04-28 2012-12-05 上海莱恩精密机床附件有限公司 Ball screw test device
DE102012008106A1 (en) * 2012-04-25 2013-10-31 Thyssenkrupp Presta Aktiengesellschaft Device for testing i.e. measurement of tilting clearance between ball nut and spindle, of ball screw in electro-mechanical power steering apparatus of motor car, has drive motor rotating ball nut and/or spindle during operation of device
CN103822784A (en) * 2014-02-26 2014-05-28 北京工业大学 Method and device for testing accelerated degradation of friction moment of ball screw pair
CN103900813A (en) * 2014-04-23 2014-07-02 清华大学 Device for measuring rotational inertia and friction moment of ball screw
CN204269365U (en) * 2014-12-08 2015-04-15 西安交通大学 A kind of pretension adjustable rolling ball screw pair moment of friction dynamic measurement device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102620929A (en) * 2012-03-15 2012-08-01 南京理工大学 Device and method for testing precision retaining ability of ball screw assembly
DE102012008106A1 (en) * 2012-04-25 2013-10-31 Thyssenkrupp Presta Aktiengesellschaft Device for testing i.e. measurement of tilting clearance between ball nut and spindle, of ball screw in electro-mechanical power steering apparatus of motor car, has drive motor rotating ball nut and/or spindle during operation of device
CN202582897U (en) * 2012-04-28 2012-12-05 上海莱恩精密机床附件有限公司 Ball screw test device
CN103822784A (en) * 2014-02-26 2014-05-28 北京工业大学 Method and device for testing accelerated degradation of friction moment of ball screw pair
CN103900813A (en) * 2014-04-23 2014-07-02 清华大学 Device for measuring rotational inertia and friction moment of ball screw
CN204269365U (en) * 2014-12-08 2015-04-15 西安交通大学 A kind of pretension adjustable rolling ball screw pair moment of friction dynamic measurement device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106568587A (en) * 2016-11-02 2017-04-19 上海航天设备制造总厂 Different-direction synchronous load test device and use method thereof
CN106441882A (en) * 2016-11-26 2017-02-22 陕西理工学院 Bidirectional loading device of planetary roller screw pair and loading method
CN107284377A (en) * 2017-06-07 2017-10-24 深圳市奈士迪技术研发有限公司 A kind of new-energy automobile with Tire Friction self-checking function
CN107284377B (en) * 2017-06-07 2019-09-27 永康市嘉翔电机有限公司 A kind of new-energy automobile with Tire Friction self-checking function
CN108827870A (en) * 2018-03-29 2018-11-16 西北工业大学 A kind of friction test device and friction parameter test method of achievable vacuum microgravity environment simulation
CN108827870B (en) * 2018-03-29 2020-11-06 西北工业大学 Friction test device capable of realizing vacuum microgravity environment simulation and friction parameter test method
CN108871765A (en) * 2018-07-11 2018-11-23 哈尔滨工业大学 One kind being used for planetary roller screw pair positioning accuracy and measurement of friction torque device
CN110006574A (en) * 2019-04-19 2019-07-12 济南大学 Ball Screw Pair Friction Moment measuring device
CN110006574B (en) * 2019-04-19 2020-12-01 济南大学 Friction moment measuring device of ball screw pair
CN110441141A (en) * 2019-07-17 2019-11-12 山东大学 Novel stretching-shear testing maschine
CN110530637A (en) * 2019-08-29 2019-12-03 北京吾天科技有限公司 Planetary roller screw dynamic property general-utility test platform

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