CN117288461B - Measuring device for friction moment of planetary roller screw pair - Google Patents
Measuring device for friction moment of planetary roller screw pair Download PDFInfo
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- CN117288461B CN117288461B CN202311221841.0A CN202311221841A CN117288461B CN 117288461 B CN117288461 B CN 117288461B CN 202311221841 A CN202311221841 A CN 202311221841A CN 117288461 B CN117288461 B CN 117288461B
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- 230000002093 peripheral effect Effects 0.000 claims description 11
- 230000001360 synchronised effect Effects 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 9
- 238000005259 measurement Methods 0.000 abstract description 5
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/24—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention relates to the technical field of planetary roller screw measurement, and discloses a measuring device for friction torque of a planetary roller screw pair, which comprises a horizontally arranged working platform, a measuring box body arranged above the working platform, two limiting transverse plates sliding on the top of the measuring box body, a limiting vertical plate vertically fixed on the top of the limiting transverse plates and a measuring component arranged on the top of the measuring box body; the side walls of the two limiting vertical plates, which are close to each other, are respectively provided with a clamping component for clamping the planetary roller screw workpiece, and the clamping component comprises two locking circular plates which are respectively rotated on the side walls of the two limiting vertical plates, which are close to each other, and cross supports arranged at two ends of a long thread spindle of the planetary roller screw workpiece; the side walls of the two locking circular plates, which are close to each other, are provided with cross grooves, and cross supports at two ends of the planetary roller screw workpiece are respectively inserted into the two locking circular plates through the cross grooves. The application has the effect of improving that the clamping structure clamping planetary roller screw is easy to appear unsteady.
Description
Technical Field
The invention relates to the technical field of planetary roller screw measurement, in particular to a device for measuring friction torque of a planetary roller screw pair.
Background
The friction torque of the planetary roller screw pair is one of important influencing factors influencing the performance of the planetary roller screw, so that the measurement of the friction force and the friction torque plays an important role in evaluating the performance of the planetary roller screw pair. Friction in planetary roller screw transmission generates a large amount of heat, and the temperature rise reduces the lubrication effect between the long thread spindle of the planetary roller screw and the nut, so that energy loss is caused during planetary roller screw transmission, and further the performance of a planetary roller screw pair is reduced.
Friction heat generation becomes an important factor affecting the relative performance of the planetary roller screw pair, and when the measuring tool is used for clamping the planetary roller screw, the clamping structures arranged at the two ends of the long thread spindle of the planetary roller screw need to keep the planetary roller screw horizontally arranged, and meanwhile, the planetary roller screw rotates at a constant speed along the rotation axis of the horizontal direction.
For the related technology, the existing measuring tool can not only clamp the long thread spindle of the planetary roller screw, but also drive the planetary roller screw to rotate at a constant speed along the rotation axis of the horizontal direction, so that the unstable condition can occur, and even the phenomenon of a sliding rod is easy to occur.
Disclosure of Invention
In order to improve the problem that the planet roller screw is easy to be unstable when clamped by the clamping structure, the application provides a measuring device for friction torque of a planet roller screw pair.
The application provides a measuring device of planet roller screw pair friction torque adopts following technical scheme:
the measuring device comprises a working platform, a measuring box body arranged above the working platform, two limiting transverse plates sliding on the top of the measuring box body, limiting vertical plates vertically fixed on the top of the limiting transverse plates, and a measuring component arranged on the top of the measuring box body; the two limiting vertical plates are respectively provided with a clamping part for clamping the planetary roller screw workpiece, and each clamping part comprises two locking circular plates which are respectively rotated on the two side walls of the two limiting vertical plates, which are close to each other, and cross supports arranged at two ends of a long thread spindle of the planetary roller screw workpiece; the side walls of the two locking circular plates, which are close to each other, are provided with cross grooves, and cross supports at two ends of the planetary roller screw workpiece are respectively inserted into the two locking circular plates through the cross grooves.
By adopting the technical scheme, the planetary roller screw workpiece is arranged at the top of the measuring box body, the long thread spindle of the planetary roller screw workpiece is penetrated between the two limiting vertical plates, at the moment, cross brackets are welded at the two ends of the long thread spindle of the planetary roller screw workpiece, the cross brackets at the two ends of the long thread spindle are respectively inserted between the two limiting vertical plates through the cross grooves, and therefore the effect that the two locking circular plates synchronously rotate with the planetary roller screw workpiece while the planetary roller screw workpiece is clamped by the two locking circular plates is achieved; the force applied to the long thread spindle of the rotating planetary roller screw workpiece for driving the nut rotation measuring part of the planetary roller screw workpiece to prevent the nut of the planetary roller screw workpiece from rotating is the friction force applied to the nut, and the friction moment obtained by multiplying the force arm of the planetary roller screw workpiece is the friction moment of the planetary roller screw pair
Optionally, the measuring component comprises a measuring base sliding on the top of the measuring box along the length direction of the measuring box, a tension pressure sensor arranged on the side wall of the measuring base, which is close to two vertical plates, a clamp ring arranged between the two tension pressure sensors, and locking teeth arranged on the outer peripheral surface of the planetary roller screw workpiece nut and the inner peripheral surface of the clamp ring; the planetary roller screw workpiece penetrates through the inner periphery of the clamp ring, and the nut of the planetary roller screw workpiece is meshed with the clamp ring.
Through adopting above-mentioned technical scheme, the nut of planet roller screw work piece wears to locate the interior periphery of clamp ring, and the outer peripheral face of the nut of planet roller screw work piece and the locking tooth intermeshing of the inside wall of clamp ring to this realizes when demountable installation between nut and the clamp ring of planet roller screw work piece, the nut of planet roller screw work piece and the synchronous rotatory effect of clamp ring. The force applied by the tension pressure sensor for preventing the nut of the planetary roller screw workpiece from rotating is the friction force applied to the nut, and the friction moment obtained by multiplying the force arm of the planetary roller screw workpiece is the friction moment of the planetary roller screw pair.
Optionally, the clamp ring both ends all are equipped with and are used for locking the nut of planet roller screw work piece with the spacing part of clamp ring, spacing part is including locating the magnetic force lantern ring at clamp ring both ends, planet roller screw work piece passes the inner periphery of magnetic force lantern ring, two the magnetic force lantern ring with the clamp ring adsorbs through magnetic force mutually.
Through adopting above-mentioned technical scheme, adsorb the magnetic force lantern ring in the position at clamp ring both ends through magnetic force, avoid the nut of planet roller screw work piece to break away from mutually between the clamp ring as far as possible.
Optionally, a driving component for driving the limiting diaphragm to slide along the length direction of the planetary roller screw workpiece is arranged in the measuring box body, and the driving component comprises a plurality of driving screws rotatably arranged in the measuring box body and a plurality of driving sliding blocks in threaded connection with the peripheral sides of the driving screws; and a plurality of driving sliding blocks on the driving screw are fixed at the bottom of the limiting transverse plate.
Through adopting above-mentioned technical scheme, the screw thread of two drive screw is mutual reverse for two synchronous rotatory drive screw passes through drive slider promotes two spacing riser slides along the direction that is close to mutually, until two locking plectanes grip planetary roller screw work piece, with this rotatory along the axis of rotation that the level set up of realization planetary roller screw work piece.
Optionally, a synchronizing component for driving the driving screws to synchronously rotate is arranged in the measuring box body, and the synchronizing component comprises a plurality of screw gears respectively arranged at the end parts of the driving screws and a driving gear rotatably arranged on the inner side wall of the measuring box body; the drive gear is arranged between two adjacent screw gears, and the screw gears are meshed with the drive gear.
Through adopting above-mentioned technical scheme, drive gear drives the screw rod gear rotation, and a plurality of screw rod gear drives a plurality of drive screw rod rotation respectively to this realization drive gear drives a plurality of drive screw rod synchronous revolution's effect.
Optionally, a locking part for locking the plurality of driving screws in the measuring box body is arranged outside the measuring box body, and the locking part comprises a first occluding disc fixedly arranged on the outer side wall of the measuring box body and a second occluding disc arranged on one side of the first occluding disc away from the measuring box body; the side walls of the first occluding plate, which are close to the second occluding plate, are provided with occluding teeth, and the first occluding plate is meshed with the second occluding plate; and a telescopic part for driving the driving gear and the second occluding plate to synchronously rotate is arranged outside the measuring box body.
By adopting the technical scheme, the limiting protrusion on the inner side wall of the telescopic sleeve is inserted into the peripheral side of the telescopic straight rod through the limiting groove, so that the first engagement disc can drive the telescopic sleeve to rotate while rotating, and the rotating telescopic sleeve drives the screw gear to rotate through the driving gear; when the first occluding disc and the second occluding disc are meshed with each other through occluding teeth, the effect that the driving screw is locked in the measuring box body is achieved.
Optionally, the telescopic component comprises a telescopic sleeve vertically fixed on the side wall of the driving gear, a telescopic straight rod penetrating through the telescopic sleeve, and a tension spring connected between the end part of the telescopic straight rod and the inner side wall of the telescopic sleeve; the end part of the telescopic straight rod, which is far away from the driving gear, penetrates through the measuring box body and is fixed on the surface of the first occluding plate.
Through adopting above-mentioned technical scheme, because when two locking plectanes centre gripping planet roller lead screw work piece, personnel unclamp the second interlock dish and make the flexible straight-bar retract telescopic sleeve's inboard through extension spring's resilience force to this realizes that flexible straight-bar drives second interlock dish and first interlock dish and meshes through the interlock tooth mutually.
Optionally, a guiding component for synchronously rotating the telescopic straight rod and the telescopic sleeve is arranged in the telescopic sleeve, and the guiding component comprises a limiting groove arranged on the periphery side of the telescopic straight rod along the length direction of the telescopic straight rod and a limiting protrusion arranged on the inner side wall of the telescopic sleeve along the length direction of the telescopic sleeve; the limiting protrusion on the telescopic sleeve is clamped on the periphery of the telescopic straight rod through the limiting groove.
Through adopting above-mentioned technical scheme, because the spacing arch of telescopic tube's inside wall is pegged graft in telescopic straight-bar's week side reason through spacing recess to this realization telescopic tube does not influence telescopic straight-bar rotation in, telescopic tube drives telescopic straight-bar and carries out synchronous rotation.
In summary, the present application includes at least one of the following beneficial technical effects:
1. because the limiting bulge on the inner side wall of the telescopic sleeve is inserted into the periphery of the telescopic straight rod through the limiting groove, the telescopic sleeve drives the telescopic straight rod to synchronously rotate while the telescopic sleeve does not influence the rotation of the telescopic straight rod;
2. the nut of the planetary roller screw workpiece penetrates through the inner periphery of the clamp ring, the outer peripheral surface of the nut of the planetary roller screw workpiece is meshed with locking teeth on the inner side wall of the clamp ring, and therefore the effect that the nut of the planetary roller screw workpiece and the clamp ring synchronously rotate while the nut of the planetary roller screw workpiece and the clamp ring are detachably mounted is achieved. The force applied by the tension pressure sensor for preventing the nut of the planetary roller screw workpiece from rotating is the friction force applied to the nut, and the friction moment obtained by multiplying the force arm of the planetary roller screw workpiece is the friction moment of the planetary roller screw pair;
3. when the planetary roller screw workpiece is clamped by the two locking circular plates, the personnel releases the second meshing plate so that the telescopic straight rod retracts to the inner side of the telescopic sleeve through the resilience force of the tension spring, and therefore the effect that the telescopic straight rod drives the second meshing plate and the first meshing plate to be meshed through the meshing teeth is achieved.
Drawings
Fig. 1 is a schematic structural view of a device for measuring friction torque of a planetary roller screw pair.
Fig. 2 is a schematic view of the top and interior of the work platform in the example of the present application.
Fig. 3 is a schematic view of the structure between two limiting risers in the example of the application.
Fig. 4 is an enlarged schematic view of the portion a in fig. 2.
Reference numerals: 11. a working platform; 12. a lifting cylinder; 13. a yielding through groove; 14. measuring the box body; 15. a limiting transverse plate; 16. a limiting vertical plate; 17. limiting through grooves; 18. locking a circular plate; 19. a cross groove; 20. planetary roller screw workpieces; 21. a cross bracket; 22. a driving motor; 23. driving a screw; 24. driving a sliding block; 25. the track is grooved; 26. a screw gear; 27. a drive gear; 28. a telescoping sleeve; 29. a telescopic straight rod; 30. a tension spring; 31. a first bite plate; 32. a second bite plate; 33. a bite tooth; 34. a limit groove; 35. a limit protrusion; 36. a linear guide rail; 37. a measurement base; 38. a pull pressure sensor; 39. a clamp ring; 40. locking teeth; 41. a magnetic collar; 42. a compression spring; 43. a planar thrust bearing.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-4.
Referring to fig. 1 to 3, the device for measuring the friction torque of the planetary roller screw pair comprises a working platform 11 erected on the ground in a horizontal direction by four supporting feet, and a lifting cylinder 12 hinged on the ground in a vertically upward direction. The right side wall of the working platform 11 is provided with a yielding through groove 13, the yielding through groove 13 vertically penetrates through the top surface and the bottom surface of the working platform 11, and a piston rod of the lifting cylinder 12 penetrates through the working platform 11 through the yielding through groove 13. The upper part of the working platform 11 is provided with a measuring box body 14, a piston rod of the lifting cylinder 12 is hinged to the bottom of the working platform 11 at a position close to the right side of the working platform, and the positions of the front side wall and the rear side wall of the measuring box body 14, which are far away from the lifting cylinder 12, are hinged to the top of the working platform 11.
Referring to fig. 1 to 3, the top of the measuring box 14 is slidably provided with two limiting cross plates 15 along the length direction of the measuring box 14, and the limiting cross plates 15 are provided with two limiting cross plates along the length direction of the measuring box 14. The top surface of the limiting transverse plate 15 is vertically fixed with limiting vertical plates 16, limiting through grooves 17 are formed in the side walls, close to the two limiting vertical plates 16, of the limiting transverse plates 16, and locking circular plates 18 are rotatably installed on the limiting vertical plates 16 through the limiting through grooves 17. The side walls of the two locking circular plates 18, which are close to each other, are provided with cross grooves 19, and the longitudinal sections of the cross grooves 19 are cross-shaped. A planetary roller screw workpiece 20 is clamped between the two locking circular plates 18 along the length direction of the measuring box 14, and cross supports 21 with cross shapes are welded at two ends of a long thread main shaft of the planetary roller screw workpiece 20.
Referring to fig. 1-3, cross brackets 21 at two ends of the planetary roller screw workpiece 20 are respectively inserted into side walls of the two locking circular plates 18 through cross grooves 19, so that the two locking circular plates 18 clamp the planetary roller screw workpiece 20 and simultaneously both the two locking circular plates 18 and the planetary roller screw workpiece 20 synchronously rotate. A driving motor 22 is fixedly arranged on the side wall, which is close to the lifting cylinder 12 and is away from the planetary roller screw workpiece 20, of the limiting vertical plate 16, and an output shaft of the driving motor 22 is fixedly connected with the locking circular plate 18. The inside of measuring box 14 is equipped with drive screw 23 along the direction of self length, and drive screw 23 is equipped with two along the direction of measuring box 14 width, and drive screw 23's both ends rotate respectively and install in measuring box 14 two inside walls about. A driving slide block 24 is slidably arranged in the measuring box body 14 along the length direction of the measuring box body, and the driving slide block 24 is in threaded connection with a driving screw 23.
Referring to fig. 2-4, the driving sliders 24 on the two driving screws 23 respectively correspond to the two limiting cross plates 15, and the threads on the two driving screws 23 are opposite to each other. The driving sliding blocks 24 on the two driving screws 23 are respectively fixed at the bottoms of the two limiting transverse plates 15. The top of the measuring box 14 is provided with a track through groove 25 along the length direction of the top, the track through groove 25 is respectively provided with two corresponding two driving sliding blocks 24, and the driving sliding blocks 24 penetrate through the measuring box 14 through the track through groove 25. Screw gears 26 are coaxially fixed on the peripheral sides of the two driving screws 23 near the lifting cylinder 12, a driving gear 27 is rotatably mounted on the inner side wall of the measuring box 14 near the lifting cylinder 12, the driving gear 27 is arranged between the two screw gears 26, and the two screw gears 26 are meshed with the driving gear 27. The right side wall of the driving gear 27 is coaxially and fixedly provided with a telescopic sleeve 28, and the end part of the telescopic sleeve 28 far away from the driving gear 27 penetrates through the measuring box 14 and is provided with a telescopic straight rod 29 along the length direction of the telescopic straight rod.
Referring to fig. 2-4, an extension spring 30 is connected between the end of the telescopic straight rod 29, which is close to the driving gear 27, and the inner side wall of the telescopic sleeve 28, which is close to the driving gear 27, a first engaging plate 31 is fixed on the right side wall of the measuring box 14, the end of the telescopic straight rod 29, which is far from the driving gear 27, passes through the first engaging plate 31 and is coaxially and fixedly provided with a second engaging plate 32, engaging teeth 33 are arranged on the side walls, which are close to the first engaging plate 31 and the second engaging plate 32, and the first engaging plate 31 and the second engaging plate 32 are engaged through the engaging teeth 33. The direction along self length of telescopic straight-bar 29 week side is equipped with spacing recess 34, and telescopic sleeve 28 inside wall is fixed with spacing protruding 35 along the direction of self length, and spacing protruding 35 on the telescopic sleeve 28 passes through spacing recess 34 joint in telescopic straight-bar 29 week side to this realizes that telescopic sleeve 28 does not influence telescopic straight-bar 29 rotation, and telescopic sleeve 28 drives telescopic straight-bar 29 and carries out synchronous rotation.
Referring to fig. 1 to 3, the top of the measuring box 14 is fixedly provided with two linear guides 36 along the length direction thereof, and the two linear guides 36 are provided in the width direction of the measuring box 14, with the two linear guides 36 being provided at positions between the two limit cross plates 15. The sliding blocks on the two linear guide rails 36 are fixedly provided with a measuring base 37, the side walls of the two vertical plates of the measuring base 37, which are close to each other, are fixedly provided with a pulling pressure sensor 38, and a clamping ring 39 is fixedly arranged between the end parts of the two pulling pressure sensors 38, which are close to each other. The outer circumferential surface of the nut of the planetary roller screw workpiece 20 is provided with a circle of locking teeth 40 by taking the axis of the nut as the circumferential direction, the inner circumferential surface of the clamp ring 39 is provided with a circle of locking teeth 40 by taking the axis of the nut as the circumferential direction, the planetary roller screw workpiece 20 penetrates through the inner circumference of the clamp ring 39, and the nut of the planetary roller screw workpiece 20 is meshed with the clamp ring 39 through the locking teeth 40.
Referring to fig. 1 to 3, the left and right side walls of the clip ring 39 are provided with magnetic collars 41, and the magnetic collars 41 and the clip ring 39 are attracted to each other by magnetic force. The planetary roller screw workpiece 20 passes through the inner periphery of the magnetic collar 41 and the outer diameter of the nut of the planetary roller screw workpiece 20 is smaller than the inner diameter of the magnetic collar 41. The side wall, which is far away from the lifting cylinder 12 and is close to the clamp ring 39, of the limiting vertical plate 16 is fixedly provided with a compression spring 42, the compression spring 42 is arranged along the length direction of the measuring box 14, the end, which is close to the clamp ring 39, of the compression spring 42 is fixedly provided with a plane thrust bearing 43, and the plane thrust bearing 43 is abutted against the side wall of the magnetic collar 41.
The implementation principle of the device for measuring the friction torque of the planetary roller screw pair disclosed by the embodiment of the application is as follows: place planetary roller screw work piece 20 at the measurement box 14 top, the long thread main shaft of planetary roller screw work piece 20 wears to locate between two spacing risers 16, and the cross support 21 has all been welded at the both ends of the long thread main shaft of planetary roller screw work piece 20 this moment, and the cross support 21 at long thread main shaft both ends is pegged graft respectively between two spacing risers 16 through cross recess 19. The person stretches the second bite plate 32 in a direction away from the first bite plate 31 and the second bite plate 32 slides in a direction along the length of the telescopic straight rod 29 until the first bite plate 31 and the second bite plate 32 are separated from each other. Because the limiting protrusion 35 on the inner side wall of the telescopic sleeve 28 is inserted into the circumferential side of the telescopic straight rod 29 through the limiting groove 34, the first engagement disc 31 rotates and drives the telescopic sleeve 28 to rotate, and the rotating telescopic sleeve 28 drives the screw gear 26 to rotate through the driving gear 27.
The two screw gears 26 respectively drive the two driving screws 23 to rotate, and as the threads of the two driving screws 23 are opposite to each other, the two driving screws 23 which rotate synchronously push the two limiting risers 16 to slide along the direction close to each other through the driving slide blocks 24 until the two locking circular plates 18 clamp the planetary roller screw workpiece 20, so that the planetary roller screw workpiece 20 rotates along the rotation axis which is horizontally arranged. When the two locking circular plates 18 clamp the planetary roller screw workpiece 20, the person releases the second meshing plate 32 so that the telescopic straight rod 29 retracts to the inner side of the telescopic sleeve 28 through the resilience force of the extension spring 30, and the telescopic straight rod 29 drives the second meshing plate 32 and the first meshing plate 31 to mesh through the meshing teeth 33. The nut of the planetary roller screw workpiece 20 is arranged on the inner periphery of the clamp ring 39 in a penetrating manner, the outer peripheral surface of the nut of the planetary roller screw workpiece 20 is meshed with the locking teeth 40 on the inner side wall of the clamp ring 39, and the nut of the planetary roller screw workpiece 20 and the clamp ring 39 are synchronously rotated while being detachably arranged.
The magnetic collar 41 is magnetically attracted to both ends of the collar ring 39, so as to avoid the separation between the nut of the planetary roller screw workpiece 20 and the collar ring 39 as much as possible. The operator adjusts the inclination angle of the measuring box 14 by starting the lifting cylinder 12, the driving motor 22 is started and drives the long thread spindle of the planetary roller screw workpiece 20 to rotate by locking the circular plate 18, and the long thread spindle of the rotating planetary roller screw workpiece 20 drives the nut of the planetary roller screw workpiece 20 to rotate. The planar thrust bearing 43 is abutted against the side wall of the magnetic collar 41 through the resilience force of the compression spring 42, the force applied to the tension pressure sensor 38 for preventing the nut of the planetary roller screw workpiece 20 from rotating is the friction force applied to the nut, the friction moment obtained by multiplying the moment arm of the planetary roller screw workpiece 20 is the friction moment of the planetary roller screw pair, and the friction moment of the planetary roller screw workpiece 20 with respect to the test table surface when the inclination angles of the planetary roller screw workpiece are different is the friction moment of the planetary roller screw pair.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (3)
1. The device comprises a horizontally arranged working platform (11), a measuring box body (14) arranged above the working platform (11), two limiting transverse plates (15) sliding on the top of the measuring box body (14), limiting vertical plates (16) vertically fixed on the top of the limiting transverse plates (15), and a measuring component arranged on the top of the measuring box body (14); the method is characterized in that: the side walls of the two limiting vertical plates (16) close to each other are respectively provided with a clamping component for clamping the planetary roller screw workpiece (20), and each clamping component comprises two locking circular plates (18) which are respectively rotated on the side walls of the two limiting vertical plates (16) close to each other, and cross supports (21) arranged at two ends of a long thread spindle of the planetary roller screw workpiece (20); the side walls of the two locking circular plates (18) close to each other are provided with cross grooves (19), and cross supports (21) at two ends of the planetary roller screw workpiece (20) are respectively inserted into the two locking circular plates (18) through the cross grooves (19);
the measuring component comprises a measuring base (37) which slides on the top of the measuring box body (14) along the length direction of the measuring box body (14), a tension pressure sensor (38) which is arranged on the side wall of the measuring base (37) where two vertical plates are close to each other, a clamp ring (39) which is arranged between the two tension pressure sensors (38), and locking teeth (40) which are arranged on the outer peripheral surface of a nut of the planetary roller screw workpiece (20) and the inner peripheral surface of the clamp ring (39); the planetary roller screw workpiece (20) penetrates through the inner periphery of the clamp ring (39), and a nut of the planetary roller screw workpiece (20) is meshed with the clamp ring (39);
the two ends of the clamp ring (39) are respectively provided with a nut used for locking the planetary roller screw workpiece (20) and a limiting part of the clamp ring (39), the limiting part comprises magnetic lantern rings (41) arranged at the two ends of the clamp ring (39), the planetary roller screw workpiece (20) passes through the inner periphery of the magnetic lantern rings (41), and the two magnetic lantern rings (41) and the clamp ring (39) are adsorbed by magnetic force;
the measuring box body (14) is internally provided with a driving component for driving the limiting transverse plate (15) to slide along the length direction of the planetary roller screw workpiece (20), and the driving component comprises a plurality of driving screws (23) rotatably arranged in the measuring box body (14) and a plurality of driving sliding blocks (24) in threaded connection with the periphery of the driving screws (23); a plurality of driving sliding blocks (24) on the driving screw (23) are fixed at the bottom of the limiting transverse plate (15);
the measuring box body (14) is internally provided with a synchronous component for driving a plurality of driving screws (23) to synchronously rotate, and the synchronous component comprises a plurality of screw gears (26) respectively arranged at the end parts of the driving screws (23) and driving gears (27) rotatably arranged on the inner side walls of the measuring box body (14); the driving gear (27) is arranged between two adjacent screw gears (26), and the screw gears (26) are meshed with the driving gear (27);
the measuring box body (14) is provided with a locking part for locking a plurality of driving screws (23) in the measuring box body (14), and the locking part comprises a first occluding disc (31) fixedly arranged on the outer side wall of the measuring box body (14) and a second occluding disc (32) arranged on one side of the first occluding disc (31) away from the measuring box body (14); the side walls of the first occluding disc (31) and the second occluding disc (32) close to each other are provided with occluding teeth (33), and the first occluding disc (31) is meshed with the second occluding disc (32); and a telescopic component for driving the driving gear (27) to synchronously rotate with the second occluding disc (32) is arranged outside the measuring box body (14).
2. The device for measuring friction torque of a planetary roller screw pair according to claim 1, wherein: the telescopic component comprises a telescopic sleeve (28) vertically fixed on the side wall of the driving gear (27), a telescopic straight rod (29) penetrating through the telescopic sleeve (28), and a tension spring (30) connected between the end part of the telescopic straight rod (29) and the inner side wall of the telescopic sleeve (28); the end part of the telescopic straight rod (29) far away from the driving gear (27) penetrates through the measuring box body (14) and is fixed on the surface of the first occluding disc (31).
3. The device for measuring friction torque of a planetary roller screw pair according to claim 2, wherein: the telescopic sleeve (28) is internally provided with a guide part for synchronously rotating the telescopic straight rod (29) and the telescopic sleeve (28), and the guide part comprises a limit groove (34) arranged on the peripheral side of the telescopic straight rod (29) along the length direction of the telescopic straight rod (29) and a limit protrusion (35) arranged on the inner side wall of the telescopic sleeve (28) along the length direction of the telescopic sleeve (28); the limiting protrusion (35) on the telescopic sleeve (28) is clamped on the periphery of the telescopic straight rod (29) through the limiting groove (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311221841.0A CN117288461B (en) | 2023-09-20 | 2023-09-20 | Measuring device for friction moment of planetary roller screw pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311221841.0A CN117288461B (en) | 2023-09-20 | 2023-09-20 | Measuring device for friction moment of planetary roller screw pair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117288461A CN117288461A (en) | 2023-12-26 |
| CN117288461B true CN117288461B (en) | 2024-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311221841.0A Active CN117288461B (en) | 2023-09-20 | 2023-09-20 | Measuring device for friction moment of planetary roller screw pair |
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| WO1996023141A1 (en) * | 1995-01-24 | 1996-08-01 | Advantest Corporation | Fitting tool for torque transmitting shaft |
| 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 |
| CN105954017A (en) * | 2016-05-10 | 2016-09-21 | 西北工业大学 | Planetary roller screw pair friction torque measurement device |
| KR101684656B1 (en) * | 2015-11-20 | 2016-12-09 | (주)한국항공기술 | Testing device for ball screw of landing gear for military aircraft |
| KR101864728B1 (en) * | 2017-11-14 | 2018-06-07 | 박영견 | Bite Block for Tensile Strength Testing Machine |
| CN111805492A (en) * | 2020-07-29 | 2020-10-23 | 沈阳中德新松教育科技集团有限公司 | Six-degree-of-freedom adjusting platform |
| CN112936146A (en) * | 2021-02-03 | 2021-06-11 | 内蒙古工业大学 | Integrated assembly fixture of reverse planetary roller screw pair |
| CN114397096A (en) * | 2021-12-21 | 2022-04-26 | 中国船舶重工集团公司第七0四研究所 | Shape and position error self-adaption device of planetary roller screw service life test bench |
| CN216815820U (en) * | 2022-03-10 | 2022-06-24 | 天津龙创恒盛实业有限公司 | Ball screw pair friction moment measuring equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9944201B2 (en) * | 2015-12-18 | 2018-04-17 | Magna Seating Inc | Quick adjust power adjuster with tubular lead screw |
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| 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 |
| KR101684656B1 (en) * | 2015-11-20 | 2016-12-09 | (주)한국항공기술 | Testing device for ball screw of landing gear for military aircraft |
| CN105954017A (en) * | 2016-05-10 | 2016-09-21 | 西北工业大学 | Planetary roller screw pair friction torque measurement device |
| KR101864728B1 (en) * | 2017-11-14 | 2018-06-07 | 박영견 | Bite Block for Tensile Strength Testing Machine |
| CN111805492A (en) * | 2020-07-29 | 2020-10-23 | 沈阳中德新松教育科技集团有限公司 | Six-degree-of-freedom adjusting platform |
| CN112936146A (en) * | 2021-02-03 | 2021-06-11 | 内蒙古工业大学 | Integrated assembly fixture of reverse planetary roller screw pair |
| CN114397096A (en) * | 2021-12-21 | 2022-04-26 | 中国船舶重工集团公司第七0四研究所 | Shape and position error self-adaption device of planetary roller screw service life test bench |
| CN216815820U (en) * | 2022-03-10 | 2022-06-24 | 天津龙创恒盛实业有限公司 | Ball screw pair friction moment measuring equipment |
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| CN117288461A (en) | 2023-12-26 |
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