CN108918101A - A kind of small ep roller screw pair precision and efficiency detection device - Google Patents

A kind of small ep roller screw pair precision and efficiency detection device Download PDF

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Publication number
CN108918101A
CN108918101A CN201810298896.4A CN201810298896A CN108918101A CN 108918101 A CN108918101 A CN 108918101A CN 201810298896 A CN201810298896 A CN 201810298896A CN 108918101 A CN108918101 A CN 108918101A
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China
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nut
screw pair
small
guide rail
mounting plate
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CN108918101B (en
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付永领
郑世成
张文森
张朋
韩旭
李林杰
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Beihang University
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Beihang University
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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 present invention be a kind of small ep roller screw pair precision and efficiency detection device, including:Servo motor, torque sensor, rotary encoder, linear guide displacement sensor, elastic ferrule and substitution bar.Elastic ferrule rear end inclined-plane and installation axle contact of incline plane, rotation cutting ferrule nut make elastic ferrule that flexible deformation occur, and clamp and fix lead screw;Linear guide displacement sensor both provided guiding for nut, also accurately measured to the axial displacement of nut;Nut connecting rod is connected using taper bolt in test process and installation adapter, when disassembly extract taper bolt, facilitates the installation and removal of lead screw pair;The system torque error testing under same loading condition is carried out using equivalent substitution bar, is used for error compensation;Through slot is milled among bottom plate, the installation for each component provides benchmark.The present invention solves the problems, such as system torque error in test process, proposes solution for the clamping of small ep roller screw pair, can accurately be detected to lead screw pair precision and efficiency.

Description

A kind of small ep roller screw pair precision and efficiency detection device
Technical field
The present invention is a kind of planetary roller screw pair device for detecting performance, especially for a kind of small ep roller screw Secondary precision and efficiency detection device belong to mechanical equipment accuracy detection technical field.
Background technique
Planetary roller screw pair is that system input rotation torque is converted into a kind of high-accuracy mechanical transmission of linear thrust Mechanism, basic principle are similar with ball-screw.It is Multi-contact, planetary roller screw pair compared to ball-screw force way Force way be line contact, increases of contact surface make planetary roller screw pair bearing capacity and rigidly will greatly improve.And And planetary roller screw has many advantages, such as that revolving speed is high, the service life is long and kinematic accuracy is high.These characteristics of planet roller screw mechanism Become the ideal chose of the applications such as rigorous service condition, long time continuous working.
Currently, planetary roller screw pair is also shorter in the time that China develops, domestic research work is concentrated mainly on The research aspect such as theory analysis and structure optimization, the research in terms of performance test is not also very complete.
Planetary roller screw pair theoretically has precision more higher than ball-screw and efficiency, derives for certification theory Correctness needs to verify by testing.Development of the country for small ep roller screw pair precision and efficiency test device Also be not it is very complete, have plenty of manual testing, reading itself can generate deviation, test object be medium-sized planetary roller screw Pair does not provide solution to small ep roller screw pair clamping problem, discloses in patent of invention CN105890895A " a kind of planetary roller screw pair comprehensive performance testing bench ", the testing stand using motor driven lead screw carry out rotation test, Hydraulic system is loaded, and does not account for the compensation of systematic error but, and in small torque actuated, the measurement of torque can generate very big Error.Therefore, it designs a set of small ep roller screw pair precision and efficiency detection device is of great significance.
Summary of the invention
Small ep roller screw pair precision and efficiency are examined in view of this, can be realized the present invention provides one kind The device of survey, for the detection to small ep roller screw pair precision, efficiency.
A kind of small ep roller screw pair precision and efficiency detection device, including:Servo motor, retarder, torque pass Sensor, rotary encoder, guide rail, sliding block, equivalent substitution bar, pull pressure sensor, thrust ball bearing, installation axle, mandril, elasticity Cutting ferrule, cutting ferrule nut, ut socket, nut connecting rod, taper bolt, taper bolt adapter, positioning pin, electromechanical actuator, bottom plate And each connecting plate, pin etc..Servo motor drives retarder to provide power source for system;Torque sensor is to lead screw input terminal Torque is tested, and is separately connected servo motor output shaft and installation axle by shaft coupling, guarantees lead screw input terminal concentricity;Axis It holds and rotary encoder is installed on the locking flange of seat, for measuring the actual rotational angle of lead screw input terminal, while being mounted on bearing Internal a pair of of the angular contact ball bearing of seat guarantees that system coaxial degree, a pair of of thrust ball bearing provide basis for system axial unloading;Top Bar and installation axle internal whorl are cooperatively connected, the axially position as lead screw;Elastic ferrule rear end inclined-plane and installation axle front end are oblique Face contact, rotation cutting ferrule nut make elastic ferrule that flexible deformation occur, and clamp and fix lead screw;Linear guide displacement sensor by Guide rail and sliding block composition, guide rail and grating scale are integrated on guide rail, and sliding shoe and reading head are integrated on sliding block, not only may be used To provide guiding for nut, the axial displacement of nut can also be accurately measured;Guide rail and bottom plate groove side cooperate, and make For positioning datum;Guide rail is fixed by screws on guide rail positioning pin;Guide rail positioning pin is solid by lower thread and bottom plate groove Even, the mounting height of guide rail is adjusted during assembling and setting, by the milling to positioning pin to guarantee the concentricity of system;Nut Cooperate with ut socket inside thread, while applying pretightning force with lock-screw prevents nut from circumferential turn occurring during the test It is dynamic;Nut connecting rod and nut external screw thread cooperate, and by nut check, prevent matching thread between nut and ut socket from loosening;It surveys Nut connecting rod and installation adapter are connected using taper bolt during examination, when disassembly extracts taper bolt, utilizes electromechanical make Dynamic device retracts load output shaft, reserves the installation and removal that axial space facilitates planetary roller screw pair;Pull pressure sensor The axial force of load output shaft is acquired in real time, and feeds back to electromechanical actuator;Electromechanical actuator is used for fictitious load, is planet Roller screw pair is loaded, and is mounted on electromechanical actuator mounting plate, and compresses side with limit pressing plate;Load orientation pin peace On electromechanical actuator mounting plate, axially position is provided for electromechanical actuator;When test macro torque error, replaced using equivalent For bar substitution cutting ferrule nut, nut connecting rod and small ep roller screw pair, equivalent substitution bar one end taper bolt and installation Adapter is connected, and the other end is withstood on thrust ball race, carries out the system torque error testing under same loading condition;Bottom It is milled with through slot among plate, when installation first installs positioning pin with motor mounting rack, torque sensor mounting plate, bearing block respectively Plate, the assembly of electromechanical actuator mounting plate, then each mounting plate assembled is inserted into bottom plate, as the positioning of each mounting plate, finally Each mounting plate is mounted on bottom plate with screw.
A kind of described small ep roller screw pair precision and efficiency detection device, elastic ferrule rear end inclined-plane and installation Axis front end contact of incline plane, rotation cutting ferrule nut make elastic ferrule that flexible deformation occur, and clamp and fix lead screw;
The torque sensor tests lead screw input terminal torque, and is separately connected servo motor by shaft coupling Output shaft and installation axle guarantee lead screw input terminal concentricity;
The rotary encoder is mounted on the locking flange of bearing block, for measuring lead screw input terminal actual rotational angle;
The angular contact ball bearing is mounted on inside bearing block, guarantees system coaxial degree, thrust bearing is system axial Unloading provides the foundation;
The mandril and installation axle internal whorl is cooperatively connected, the axially position as lead screw;
The linear guide displacement sensor is made of guide rail and sliding block, and guide rail and grating scale are integrated in guide rail On, sliding shoe and reading head are integrated on sliding block, not only can provide guiding for nut, can also axial displacement to nut into Row accurately measures;
The guide rail and bottom plate groove side cooperates, and as positioning datum, and is fixed by screws in guide rail positioning pin On;
The guide rail positioning pin is connected by lower thread and bottom plate groove, by positioning during assembling and setting The mounting height of the milling adjustment guide rail of pin, to guarantee the concentricity of system;
The nut and ut socket inside thread cooperates, while applying pretightning force with lock-screw prevents nut from surveying It is circumferentially rotated during examination;
The nut connecting rod and nut external screw thread cooperates, and nut check prevents from cooperating between nut and ut socket Thread looseness;
Nut connecting rod and installation adapter are connected by the taper bolt during the test, and when disassembly pulls out taper bolt Out, load output shaft is retracted using electromechanical actuator, reserves the installation and removal that axial space facilitates planetary roller screw pair;
The pull pressure sensor acquires the axial force of load output shaft in real time, and feeds back to electromechanical actuator;
The electromechanical actuator is used for fictitious load, is loaded for planetary roller screw pair, is mounted on electromechanical actuation On device mounting plate, and side is compressed with limit pressing plate;
The load orientation pin is mounted on electromechanical actuator mounting plate, provides axially position for electromechanical actuator;
The equivalent substitution bar, in test macro torque error, substitution cutting ferrule nut, nut connecting rod and small-sized row Star roller screw pair, equivalent substitution bar one end taper bolt and installation adapter are connected, and the other end withstands on thrust ball race On, carry out the test of system torque error under same loading condition;
Be milled with through slot among the bottom plate, positioning pin respectively with motor mounting rack, torque sensor mounting plate, bearing Seat mounting plate, the assembly of electromechanical actuator mounting plate, then each mounting plate assembled is inserted into bottom plate, as determining for each mounting plate Position, is finally mounted on bottom plate for each mounting plate with screw;
The present invention has the advantage that compared with existing structure:
(1) a kind of small ep roller screw pair precision of the present invention and efficiency detection device, using the method for equivalent substitution, Torque error when being loaded using replacing part measuring system, and compensate, it can be with significant increase system testing precision;
(2) a kind of small ep roller screw pair precision of the present invention and efficiency detection device, by elastic ferrule rear end inclined-plane With installation axle front end contact of incline plane, rotating cutting ferrule nut makes elastic ferrule that flexible deformation occur, and solves small ep roller silk The problem of secondary hardly possible of thick stick clamps;
(3) a kind of small ep roller screw pair precision of the present invention and efficiency detection device, were being tested using taper bolt Nut connecting rod and installation adapter are connected in journey, when disassembly extracts taper bolt, is exported load using electromechanical actuator Axis retracts, and reserves the installation and removal that axial space facilitates planetary roller screw pair;
(4) a kind of small ep roller screw pair precision of the present invention and efficiency detection device, are displaced using linear guide and are passed Sensor, guide rail slide block is integrated with grating scale, it can provide guiding for nut, can also axial displacement to nut into Row accurately measures, while avoiding guide rail and grating scale and install not parallel equal error and impacting to system accuracy.
Detailed description of the invention
Fig. 1 is the axonometric drawing of a kind of small ep roller screw pair precision and efficiency detection device;
Fig. 2 is the cut away view of a kind of small ep roller screw pair precision and efficiency detection device;
Fig. 3 is the system torque error testing figure of a kind of small ep roller screw pair precision and efficiency detection device;
Fig. 4 is the lead screw clamping end cross-sectional view of a kind of small ep roller screw pair precision and efficiency detection device;
Fig. 5 is the nut clamping end cross-sectional view of a kind of small ep roller screw pair precision and efficiency detection device;
Fig. 6 is the nut loading end cross-sectional view of a kind of small ep roller screw pair precision and efficiency detection device;
Fig. 7 is the small ep roller screw pair section view of a kind of small ep roller screw pair precision and efficiency detection device Figure;
In figure:1 is servo motor;2 be retarder;3 be shaft coupling;4 be torque sensor;5 be rotary encoder;6 are Bearing block;7 be installation axle;8 be ut socket;9 be lock-screw;10 be sliding block;11 be guide rail;12 be pull pressure sensor; 13 be load output shaft;14 be bottom plate;15 be electromechanical actuator;16 be limit pressing plate;17 be motor mounting rack;18 be torque Sensor mounting plate;19 be locking flange;20 be angular contact ball bearing;21 be thrust ball bearing;22 be small ep roller silk Thick stick pair;23 are negative idling connector;24 be electromechanical actuator mounting plate;25 be load positioning pin;26 be bearing mounting plate;27 are Taper bolt;28 be mandril;29 be elastic ferrule;30 be cutting ferrule nut;31 be nut connecting rod;32 be installation adapter;33 are Screw;34 be guide rail positioning pin;35 equivalent substitution bars.
Specific embodiment
In the following with reference to the drawings and specific embodiments to further detailed description of the present invention:
It is an object of the invention to overcome the shortcomings of on existing structure, providing one kind be can be realized to small ep roller The device that lead screw pair precision and efficiency are detected, for the detection to small ep roller screw pair precision, efficiency.
Refering to fig. 1~Fig. 7, a kind of small ep roller screw pair precision and efficiency detection device, including:Servo motor (1);Retarder (2);Shaft coupling (3);Torque sensor (4);Rotary encoder (5);Bearing block (6);Installation axle (7);Nut Sleeve (8);Lock-screw (9);Sliding block (10);Guide rail (11);Pull pressure sensor (12);Load output shaft (13);Bottom plate (14);Electromechanical actuator (15);It limits pressing plate (16);Motor mounting rack (17);Torque sensor mounting plate (18);Locking method Blue (19);Angular contact ball bearing (20);Thrust ball bearing (21);Small ep roller screw pair (22);It loads adapter (23); Electromechanical actuator mounting plate (24);Load orientation pin (25);Bearing mounting plate (26);Taper bolt (27);Mandril (28);Elasticity Cutting ferrule (29);Cutting ferrule nut (30);Nut connecting rod (31);It installs adapter (32);Screw (33);Guide rail positioning pin (34); Equivalent substitution bar (35).
Servo motor (1) drives retarder (2) to provide power source for system;Torque sensor (4) is defeated to lead screw (22-1) Enter torque is held to be tested, and servo motor (1) output shaft and installation axle (7) are separately connected by shaft coupling (3), guarantees lead screw (22-1) input terminal concentricity;Rotary encoder (5) are installed on the locking flange (19) of bearing block (6), for measuring lead screw The actual rotational angle of (22-1) input terminal;It is mounted on internal a pair of of the angular contact ball bearing (20) of bearing block (6) and guarantees system coaxial degree, A pair of of thrust ball bearing (21) provides basis for system axial unloading;Mandril (28) and installation axle (7) internal whorl are cooperatively connected, Axially position as lead screw (22-1);Elastic ferrule (29) rear end inclined-plane and installation axle (7) front end contact of incline plane rotate cutting ferrule Nut (30) makes elastic ferrule (29) that flexible deformation occurs, and clamps and fixed lead screw (22-1);Linear guide displacement sensor by Guide rail (11) and sliding block (10) composition, guide rail and grating scale are integrated on guide rail (11), and sliding shoe and reading head are integrated in On sliding block (10), not only guiding can be provided for nut (22-2), the axial displacement of nut (22-2) can also be carried out accurate Measurement;Guide rail (11) and bottom plate (14) groove side cooperate, as positioning datum;Guide rail (11) is fixed on by screw (33) and is led On rail positioning pin (34);Guide rail positioning pin (34) is connected by lower thread and bottom plate (14) groove, logical during assembling and setting The mounting height of the adjustment of the milling to guide rail positioning pin (34) guide rail (11) is crossed, to guarantee the concentricity of system;Nut (22-2) Cooperate with ut socket (8) inside thread, while applying pretightning force with lock-screw (9) prevents nut (22-2) in test process It is middle to circumferentially rotate;Nut connecting rod (31) and nut (22-2) external screw thread cooperate, and nut (22-2) is locked, nut is prevented Matching thread loosens between (22-2) and ut socket (8);In test process using taper bolt (27) by nut connecting rod (31) and Adapter (32) are installed to be connected, are extracted taper bolt (27) when disassembly, using electromechanical actuator (15) by load output shaft (13) It retracts, reserves the installation and removal that axial space facilitates planetary roller screw pair (22);Pull pressure sensor (12) is defeated to loading The axial force of shaft (13) acquires in real time, and feeds back to electromechanical actuator (15);Electromechanical actuator (15) is used for fictitious load, is Planetary roller screw pair (22) is loaded, and is mounted on electromechanical actuator mounting plate (24), and is compressed with limit pressing plate (16) Side;Load orientation pin (25) is mounted on electromechanical actuator mounting plate (24), provides axially position for electromechanical actuator (15); When test macro torque error, with equivalent substitution bar (35) substitution cutting ferrule nut (30), nut connecting rod (31) and small ep Roller screw pair (22), equivalent substitution bar (35) one end are connected with taper bolt (27) and installation adapter (32), and the other end is withstood on On thrust ball bearing (21) seat ring, the test of system torque error under same loading condition is carried out;It is milled among bottom plate (14) logical Slot, when installation first by positioning pin respectively with motor mounting rack (17), torque sensor mounting plate (18), bearing mounting plate (26), electromechanical actuator mounting plate (24) assembles, then each mounting plate assembled is inserted into bottom plate (14), as each mounting plate Positioning, is finally mounted on bottom plate (14) for each mounting plate with screw.
A kind of described small ep roller screw pair precision and efficiency detection device, elastic ferrule (29) rear end inclined-plane with Installation axle (7) front end contact of incline plane, rotation cutting ferrule nut (30) make elastic ferrule (29) that flexible deformation occurs, and clamp simultaneously fixed wire Thick stick (22-1);
A kind of described small ep roller screw pair precision and efficiency detection device, by torque sensor (4) to lead screw (22-1) input terminal torque is tested, and is separately connected servo motor (1) output shaft and installation axle (7) by shaft coupling (3), is protected Demonstrate,prove lead screw (22-1) input terminal concentricity;
A kind of described small ep roller screw pair precision and efficiency detection device, rotary encoder (5) are mounted on axis It holds on the locking flange of seat (6) (19), for measuring lead screw (22-1) input terminal actual rotational angle;
A kind of described small ep roller screw pair precision and efficiency detection device, angular contact ball bearing (20) are mounted on Bearing block (6) inside ensuring system coaxial degree, thrust ball bearing (21) provide basis for system axial unloading;
A kind of described small ep roller screw pair precision and efficiency detection device, in mandril (28) and installation axle (7) Portion is threadedly engaged connection, the axially position as lead screw (22-1);
A kind of described small ep roller screw pair precision and efficiency detection device, linear guide displacement sensor is by leading Rail (11) and sliding block (10) composition, guide rail and grating scale are integrated on guide rail (11), and sliding shoe and reading head are integrated in cunning On block (10), not only guiding can be provided for nut (22-2), the axial displacement of nut (22-2) can also precisely be surveyed Amount;
A kind of described small ep roller screw pair precision and efficiency detection device, guide rail (11) and bottom plate (14) groove Side cooperation is fixed on guide rail positioning pin (34) as positioning datum, and by screw (33);
A kind of described small ep roller screw pair precision and efficiency detection device, guide rail positioning pin (34) pass through lower end Screw thread and bottom plate (14) groove are connected, and pass through milling adjustment guide rail (11) to guide rail positioning pin (34) during assembling and setting Mounting height, to guarantee the concentricity of system;
A kind of described small ep roller screw pair precision and efficiency detection device, nut (22-2) and ut socket (8) inside thread cooperates, while applying pretightning force with lock-screw (9) prevents nut (22-2) from occurring during the test circumferentially Rotation;
A kind of described small ep roller screw pair precision and efficiency detection device, nut connecting rod (31) and nut The cooperation of (22-2) external screw thread, nut (22-2) is locked, and prevents matching thread between nut (22-2) and ut socket (8) from loosening;
A kind of described small ep roller screw pair precision and efficiency detection device, taper bolt (27) is during the test Nut connecting rod (31) and installation adapter (32) are connected, taper bolt (27) is extracted when disassembly, utilizes electromechanical actuator (15) load output shaft (13) are retracted, reserves the installation and removal that axial space facilitates planetary roller screw pair (22);
A kind of described small ep roller screw pair precision and efficiency detection device, pull pressure sensor (12) is to load The axial force of output shaft (13) acquires in real time, and feeds back to electromechanical actuator (15);
A kind of described small ep roller screw pair precision and efficiency detection device, electromechanical actuator (15) is for simulating Load is loaded for planetary roller screw pair (22), is mounted on electromechanical actuator mounting plate (24), and with limiting pressing plate (16) side is compressed;
A kind of described small ep roller screw pair precision and efficiency detection device, load orientation pin (25) are mounted on machine On motor-driven cylinder mounting plate (24), axially position is provided for electromechanical actuator (15);
A kind of described small ep roller screw pair precision and efficiency detection device, in test macro torque error, It is equivalent with equivalent substitution bar (35) substitution cutting ferrule nut (30), nut connecting rod (31) and small ep roller screw pair (22) It substitutes bar (35) one end to be connected with taper bolt (27) and installation adapter (32), the other end withstands on thrust ball bearing (21) seat ring On, carry out the test of system torque error under same loading condition;
A kind of described small ep roller screw pair precision and efficiency detection device are milled with through slot among bottom plate (14), Positioning pin respectively with motor mounting rack (17), torque sensor mounting plate (18), bearing mounting plate (26), electromechanical actuator Mounting plate (24) assembly, then each mounting plate assembled is inserted into bottom plate (14) as the positioning of each mounting plate and finally uses screw Each mounting plate is mounted on bottom plate (14).
In conclusion be not intended to limit the scope of the present invention the above is only preferred embodiments of the present invention, All within the spirits and principles of the present invention, made any modification, equivalent substitution, improvement and etc., should be included in the present invention Protection scope within.

Claims (4)

1. a kind of small ep roller screw pair precision and efficiency detection device, it is characterised in that:By servo motor (1);Slow down Device (2);Shaft coupling (3);Torque sensor (4);Rotary encoder (5);Bearing block (6);Installation axle (7);Ut socket (8); Lock-screw (9);Sliding block (10);Guide rail (11);Pull pressure sensor (12);Load output shaft (13);Bottom plate (14);Electromechanics is made Dynamic device (15);It limits pressing plate (16);Motor mounting rack (17);Torque sensor mounting plate (18);It locks flange (19);Corner connection It touches ball bearing (20);Thrust ball bearing (21);Small ep roller screw pair (22);It loads adapter (23);Electromechanical actuator Mounting plate (24);Load orientation pin (25);Bearing mounting plate (26);Taper bolt (27);Mandril (28);Elastic ferrule (29); Cutting ferrule nut (30);Nut connecting rod (31);It installs adapter (32);Screw (33);Guide rail positioning pin (34);Equivalent substitution bar (35) it forms;
Torque sensor (4) tests lead screw (22-1) input terminal torque, and is separately connected servo motor by shaft coupling (3) (1) output shaft and installation axle (7) guarantee lead screw (22-1) input terminal concentricity;Rotary encoder (5) is mounted on bearing block (6) Locking flange on (19), for measuring lead screw (22-1) input terminal actual rotational angle;Angular contact ball bearing (20) is mounted on bearing Seat (6) inside ensuring system coaxial degree, thrust ball bearing (21) provide basis for system axial unloading;Pull pressure sensor (12) The axial force of load output shaft (13) is acquired in real time, and feeds back to electromechanical actuator (15);Electromechanical actuator (15) is used for mould Quasi- load, is loaded for planetary roller screw pair (22), is mounted on electromechanical actuator mounting plate (24), and with limiting pressing plate (16) side is compressed;Load orientation pin (25) is mounted on electromechanical actuator mounting plate (24), is provided for electromechanical actuator (15) Axially position;
Elastic ferrule (29) rear end inclined-plane and installation axle (7) front end contact of incline plane, rotation cutting ferrule nut (30) make elastic ferrule (29) flexible deformation occurs, clamps and fixed lead screw (22-1);Mandril (28) and installation axle (7) internal whorl are cooperatively connected, and make For the axially position of lead screw (22-1);
Guide rail (11) and bottom plate (14) groove side cooperate, and are fixed on guide rail positioning as positioning datum, and by screw (33) It sells on (34);Guide rail positioning pin (34) is connected by lower thread and bottom plate (14) groove, by leading during assembling and setting The mounting height of milling adjustment guide rail (11) of rail positioning pin (34), to guarantee the concentricity of system;
Nut (22-2) and ut socket (8) inside thread cooperate, while preventing nut with lock-screw (9) application pretightning force (22-2) is circumferentially rotated during the test;Nut connecting rod (31) and nut (22-2) external screw thread cooperate, by nut (22-2) locking prevents matching thread between nut (22-2) and ut socket (8) from loosening;
Be milled with through slot among bottom plate (14), positioning pin respectively with motor mounting rack (17), torque sensor mounting plate (18), axis A mounting plate (26), electromechanical actuator mounting plate (24) assembly are held, then each mounting plate assembled is inserted into bottom plate (14), as Each mounting plate is finally mounted on bottom plate (14) with screw by the positioning of each mounting plate.
2. a kind of small ep roller screw pair precision as described in claim 1 and efficiency detection device, it is characterised in that:It adopts Connected in test macro torque error with equivalent substitution bar (35) substitution cutting ferrule nut (30), nut with the mode of equivalent substitution Extension bar (31) and small ep roller screw pair (22), equivalent substitution bar (35) one end taper bolt (27) and installation adapter (32) it is connected, the other end is withstood on thrust ball bearing (21) seat ring, carries out the test of system torque error under same loading condition.
3. a kind of small ep roller screw pair precision as described in claim 1 and efficiency detection device, it is characterised in that:It adopts Linear guide displacement sensor is made of guide rail (11) and sliding block (10), and guide rail and grating scale are integrated in guide rail (11) On, sliding shoe and reading head are integrated on sliding block (10), not only can provide guiding for nut (22-2), can also be to nut The axial displacement of (22-2) is accurately measured, while avoiding guide rail and the not parallel equal error of grating scale installation to system accuracy It impacts.
4. a kind of small ep roller screw pair precision as described in claim 1 and efficiency detection device, it is characterised in that:It adopts Nut connecting rod (31) and installation adapter (32) are connected during the test with taper bolt (27), by taper bolt when disassembly (27) it extracts, load output shaft (13) is retracted using electromechanical actuator (15), axial space is reserved and facilitates planetary roller screw The installation and removal of secondary (22).
CN201810298896.4A 2018-03-30 2018-03-30 Precision and efficiency detection device for small planetary roller screw pair Active CN108918101B (en)

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