CN110207981B - Nondestructive ball screw pair static rigidity measuring device - Google Patents

Nondestructive ball screw pair static rigidity measuring device Download PDF

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Publication number
CN110207981B
CN110207981B CN201910457438.5A CN201910457438A CN110207981B CN 110207981 B CN110207981 B CN 110207981B CN 201910457438 A CN201910457438 A CN 201910457438A CN 110207981 B CN110207981 B CN 110207981B
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ball screw
screw pair
bottom plate
measuring
loading
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CN110207981A (en
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欧屹
顾頔
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Nanjing University of Science and Technology
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Nanjing University of Science and Technology
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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
    • G01M13/02Gearings; Transmission mechanisms
    • G01M13/025Test-benches with rotational drive means and loading means; Load or drive simulation

Abstract

The invention discloses a lossless ball screw pair static rigidity measuring device which comprises a test bed body, a loading ball screw pair, a loading cross beam, a pressure sensor, a pressurizing device, an axial displacement measuring device, a measuring disc, a rotation measuring device, a rotation measuring reference part, a first guide rail, a ball screw pair to be measured, a torque transmission device, a torque sensor, a servo motor, a speed reducer, a synchronous belt wheel and an industrial personal computer. The industrial personal computer controls the servo motor to drive the speed reducer, the synchronous belt pulley and the loading ball screw pair, and loading of the loading beam is achieved. The pressure sensor reads the stress of the lead screw to be measured in real time, the axial displacement measuring device reads the axial length change of the lead screw in real time, and the axial static rigidity of the lead screw to be measured is obtained by dividing the axial length change and the axial static rigidity. The rotation measuring device compensates experimental errors generated by rotation and torsion of the screw rod; the torque sensor reads the torque applied to the screw rod in real time, and the torsional static rigidity of the screw rod is further solved. The invention has simple structure, easy operation and high and accurate reliability of the measuring result.

Description

Nondestructive ball screw pair static rigidity measuring device
Technical Field
The invention belongs to the field of rigidity detection of a ball screw pair, and particularly relates to a nondestructive static rigidity measuring device of the ball screw pair.
Background
Ball screw pairs are widely used in feeding systems. With the continuous improvement of the speed of the ball screw pair, the vibration problem of the ball screw pair is increasingly prominent, and the positioning precision and the precision maintaining capability of a feeding system are seriously influenced. The rigidity of the ball screw pair seriously affects the transmission performance and the vibration amplitude of the feeding system. Insufficient rigidity of the ball screw pair has become a major obstacle to the development of numerically-controlled machine tools and automation equipment to high speed and high precision.
The conventional ball screw pair static stiffness measurement has some defects, a sample piece needs to be cut off when a rigidity test is carried out on a plurality of conventional test equipment, and the requirements of nondestructive rigidity tests cannot be met. In addition, most of the existing test equipment focuses on the axial static rigidity of the screw rod, the influence of the torsional rigidity of the screw rod pair is not considered, and a measurement result has certain deviation from an actual value.
Disclosure of Invention
The invention aims to provide a measuring device capable of nondestructively measuring static rigidity of a ball screw pair.
The technical solution for realizing the purpose of the invention is as follows: a lossless ball screw pair static rigidity measuring device comprises a test bed body, a loading ball screw pair, a loading cross beam, a pressure sensor, a pressurizing device, an axial displacement measuring device, a measuring disc, a rotation measuring device, a rotation measuring reference component, a first guide rail, a ball screw pair to be measured, a torque transmission device, a torque sensor, a servo motor, a speed reducer, a synchronous pulley and an industrial personal computer;
the test bed body comprises a first bottom plate, a second bottom plate and a fixed cross beam, the first bottom plate is perpendicular to the second bottom plate, and the fixed cross beam is arranged on the second bottom plate; a first guide column which is parallel to the second bottom plate and penetrates through the loading beam is arranged on the first bottom plate, the tail end of the first guide column is fixedly connected to the fixed beam, and the loading beam can slide on the first guide column; the pair of loading ball screw pairs are symmetrically distributed along the axial direction of the second bottom plate, one end of each loading ball screw pair is connected with the synchronous belt pulley, and the other end of each loading ball screw pair penetrates through the loading cross beam and is fixed through the nut flange; the loading cross beam is sequentially provided with a pressure sensor, a pressurizing device and a ball screw pair to be measured along the symmetrical axis of the pair of loading ball screw pairs, the ball screw pair to be measured penetrates through the fixed cross beam and is fixed through a first nut tool, a measuring disc is arranged on the first nut tool, and an axial displacement measuring device sleeved on the ball screw pair to be measured is arranged between the measuring disc and the pressurizing device; a first guide rail is arranged on the second bottom plate, a torque sensor is fixed on the first sliding block and can slide along the first guide rail, and a torque transmission device is arranged on the torque sensor; the tail end of the ball screw pair to be tested is connected with the torque transmission device; n rotation measuring devices sleeved on the ball screw pair to be measured are arranged between the axial displacement measuring device and the torque transmission device, each rotation measuring device comprises a displacement sensor and a displacement sensor supporting device, and the displacement sensors are in contact with rotation measuring reference components arranged on the second bottom plate; set up servo motor, reduction gear, synchronous pulley and industrial computer on the test bench stage body, the industrial computer control servo motor work gathers pressure sensor, displacement sensor and torque sensor's data simultaneously, and servo motor links to each other with the reduction gear, and the reduction gear links to each other with synchronous pulley.
Compared with the prior art, the invention has the following remarkable advantages: 1) when the rigidity test is carried out, a sample piece does not need to be cut off, and the requirements of the nondestructive rigidity test can be met; 2) the device is simple and convenient to operate, and the obtained data is real and reliable and has high repeatability; 3) error compensation can be carried out on the measuring result through rotating the measuring device, so that the measuring result is more accurate; 4) the test bed has more comprehensive functions, and the torsional static rigidity of the screw rod can be further measured by combining the reading of the torque sensor.
The present invention is described in further detail below with reference to the attached drawings.
Drawings
FIG. 1 is an assembly view of the overall structure of the lossless measuring device for the static rigidity of the ball screw pair of the present invention.
FIG. 2 is a schematic view of a test bed body according to the present invention.
FIG. 3 is a schematic structural view of the auxiliary device of the present invention.
Fig. 4 is a schematic structural view of a first nut tooling of the present invention.
FIG. 5 is a schematic view of the structure of the pressurizing device of the present invention.
FIG. 6 is a schematic structural diagram of a rotation measuring device according to the present invention.
FIG. 7 is a schematic view of a fixing device according to the present invention.
FIG. 8 is a schematic view of a sensor fixture according to the present invention.
FIG. 9 is a schematic view of a rotating measurement reference member of the present invention.
FIG. 10 is a schematic view of the adjustable V-block of the present invention.
FIG. 11 is a schematic illustration of the torque transmitting device of the present invention.
Detailed Description
With reference to fig. 1, the device for measuring the static stiffness of a lossless ball screw pair of the present invention comprises a test bed body 1, a loading ball screw pair 2, a loading cross beam 5, a pressure sensor 6, a pressurizing device 8, an axial displacement measuring device 9, a measuring disc 10, a rotation measuring device 12, a rotation measuring reference part 13, a first guide rail 15, a ball screw pair 18 to be measured, a torque transmission device 19, a torque sensor 20, a servo motor 21, a reducer 22, a synchronous pulley 23 and an industrial personal computer 24;
with reference to fig. 2, the test bed body 1 comprises a first bottom plate 1-1, a second bottom plate 1-2 and a fixed cross beam 1-3, wherein the first bottom plate 1-1 is perpendicular to the second bottom plate 1-2, and the fixed cross beam 1-3 is arranged on the second bottom plate 1-2; a first guide column 3 which is parallel to the second bottom plate 1-2 and penetrates through the loading beam 5 is arranged on the first bottom plate 1-1, the tail end of the first guide column 3 is fixedly connected to the fixed beam 1-3, and the loading beam 5 can slide on the first guide column 3; the pair of loading ball screw pairs 2 are symmetrically distributed along the axial direction of the second bottom plate 1-2, one end of each loading ball screw pair is connected with the synchronous belt pulley 23, and the other end of each loading ball screw pair penetrates through the loading cross beam 5 and is fixed through the nut flange 4; the loading cross beam 5 is sequentially provided with a pressure sensor 6, a pressurizing device 8 and a ball screw pair to be measured 18 along the symmetrical axis of the pair of loading ball screw pairs 2, the ball screw pair to be measured 18 penetrates through the fixed cross beams 1-3 and is fixed through a first nut tool 11, a measuring disc 10 is arranged on the first nut tool 11, and an axial displacement measuring device 9 sleeved on the ball screw pair to be measured 18 is arranged between the measuring disc 10 and the pressurizing device 8; a first guide rail 15 is arranged on the second bottom plate 1-2, a torque sensor 20 is fixed on the first sliding block 16-1 and can slide along the first guide rail 15, and a torque transmission device 19 is arranged on the torque sensor 20; the tail end of the ball screw pair 18 to be tested is connected with the torque transmission device 19; n rotary measuring devices 12 sleeved on the ball screw pair 18 to be measured are arranged between the axial displacement measuring device 9 and the torque transmission device 19, each rotary measuring device 12 comprises a displacement sensor 37 and a displacement sensor supporting device, and the displacement sensors 37 are in contact with rotary measuring reference parts 13 arranged on the second bottom plate 1-2; the test bed body 1 is provided with a servo motor 21, a speed reducer 22, a synchronous belt wheel 23 and an industrial personal computer 24, the industrial personal computer 24 controls the servo motor 21 to work and simultaneously collects data of the pressure sensor 6, the displacement sensor 37 and the torque sensor 20, the servo motor 21 is connected with the speed reducer 22, and the speed reducer 22 is connected with the synchronous belt wheel 23.
Further, referring to fig. 3, the static stiffness measuring device of the present invention further includes a tool auxiliary device 7 for assembling and disassembling the first nut tool 11, which is disposed on the second slider 16-2 of the first guide rail 15;
the auxiliary tool device 7 comprises a rotating plate 29, a supporting shaft 30, a supporting rod 31, a first base 32 and a baffle 33; the first base 32 is fixedly connected with the second sliding block 16-2, a baffle 33 is arranged on the first base 32, two ends of the baffle 33 are connected with the rotatable rotating plate 29, two ends of the first base 32 are vertically provided with supporting rods 31 used for supporting the rotating plate 29, and a supporting shaft 30 used for bearing the first nut tool 11 is arranged on the rotating plate 29.
Exemplarily and preferably, referring to fig. 4, the first nut tooling 11 is divided into a left nut tooling and a right nut tooling, and tapered holes 35 matched with the corresponding support shafts 30 are uniformly distributed on the left nut tooling and the right nut tooling.
Further, with reference to fig. 5, the pressurizing device 8 includes an upper pressure plate 25, a steel ball 27, and a lower pressure plate 28, which are sequentially arranged from top to bottom, the upper pressure plate 25 is fixedly connected to the pressure sensor 6, the lower pressure plate 28 is in contact with the ball screw pair 18 to be measured, the upper pressure plate 25 and the lower pressure plate 28 are connected by a connecting rod 26, and the steel ball 27 for transmitting an axial load is arranged between the two pressure plates.
Further preferably, with reference to fig. 6, the displacement sensor supporting device in the rotation measuring device 12 includes a displacement sensor clamp 38, a clamp sleeve 39, and a fixing device 40, the fixing device 40 is sleeved on the ball screw pair 18 to be measured, the clamp sleeve 39 is fixedly connected to the fixing device 40, the displacement sensor clamp 38 is fixedly connected to the clamp sleeve 39, and the displacement sensor 37 is fixed in the sensor clamp 38.
Exemplarily and preferably, with reference to fig. 7, the fixing device 40 includes a first threaded sleeve 41, an outer elastic taper sleeve 42, an inner elastic taper sleeve 43, and an outer shell 44, where the first threaded sleeve 41, the outer elastic taper sleeve 42, and the inner elastic taper sleeve 43 are all located in the outer shell 44, where the inner elastic taper sleeve 43 is sleeved on the ball screw pair 18 to be measured, an outer wall surface of the inner elastic taper sleeve 43 is a tapered surface, an outer wall surface of the inner elastic taper sleeve 43 is matched with an inner wall surface of the outer elastic taper sleeve 42, and the first threaded sleeve 41 is located above the outer elastic taper sleeve 42, and the outer elastic taper sleeve 42 and the inner elastic taper sleeve 43 are pressed tightly by matching with an internal thread of the outer shell 44, so that the rotation measuring device 12 is fixed on the ball screw pair 18 to be measured.
Exemplarily and preferably, with reference to fig. 8, the sensor clamp 38 includes a clamp housing 45, a second thread bushing 46, a screw 47, and a nylon plug 48, the clamp housing 45 is fixed on the clamp housing 39, the second thread bushing 46, the screw 47, and the nylon plug 48 are installed inside the clamp housing 45, one end of the nylon plug 48 has an internal thread, and the other end of the nylon plug 48 has a semicircular groove for fixing the displacement sensor 37, wherein the internal thread is matched with the external thread of the screw 47, the second thread bushing 46 is sleeved on the screw 47 and connected with the internal thread of the clamp housing 45, a compression spring is further disposed on the screw 47 between the second thread bushing 46 and the nylon plug 48, and the nylon plug 48 is compressed with the sensor by adjusting the second thread bushing 46.
Further preferably, with reference to fig. 9, the rotation measurement reference component 13 includes a stainless steel plate 49, an aluminum frame 50, and a magnetic gauge stand 51, one end of the aluminum frame 50 is fixedly connected to the stainless steel plate 49, the other end is fixedly connected to the magnetic gauge stand 51 disposed on the second bottom plate 1-2, and the displacement sensor 37 is in contact with the stainless steel plate 49.
Further, referring to fig. 10, the static stiffness measuring device of the present invention further includes an adjustable v-block 14 disposed on the third slider 16-3 of the first guide rail 15;
the adjustable v-block 14 comprises a second base 52, a bottom plate 53, a second guide rail 54, a displacement device 56, a v-block 57, a second guide post 58, a ball screw pair 59, a bearing seat 61, a deep groove ball bearing 62, a bearing end cover 63 and a handle 64, the second base 52 is arranged on the third sliding block 16-3 of the first guide rail 15, the second base 52 is fixedly connected with a bottom plate 53, the second guide rail 54 is arranged on the bottom plate 53, the displacement device 56 is arranged on the sliding block of the second guide rail 54, a second guide column 58 is arranged on the central shaft of the bottom plate 53, a v-shaped block 57 which is contacted with the displacement device 56 is arranged on the second guide column 58, a ball screw pair 59 is fixed on the displacement device 56 through a second nut tool 60, one end of the ball screw pair 59 is matched with the inner ring of a deep groove ball bearing 62 and is in interference fit with a handle 64, wherein the deep groove ball bearing 62 is arranged on a bearing seat 61 which is fixed on the bottom plate 53.
Exemplarily and preferably, in conjunction with fig. 11, the torque transmission device 19 includes a connector 65 for connecting the torque transmission device 19 and the torque sensor 20, and a flat key 66 for connecting the torque transmission device 19 and the ball screw pair 18 to be tested.
According to the lossless measuring device for the static rigidity of the ball screw pair, the servo motor is controlled to work through the industrial personal computer, the speed reducer, the synchronous belt pulley and the loading ball screw pair are driven, and loading of the loading beam is further achieved. The loading beam is provided with a pressure sensor which can read the stress of the lead screw to be measured in real time, and the lead screw to be measured is also provided with an axial displacement measuring device which can read the axial length change of the lead screw to be measured in real time. And the axial static rigidity of the ball screw pair to be measured can be obtained by dividing the two. In addition, a rotation measuring device is arranged on the lead screw to be measured, and experimental errors generated by rotation and torsion of the lead screw can be compensated; meanwhile, the torque sensor is fixedly connected with the tail part of the screw rod through the torque transmission device, so that the torque borne by the screw rod can be read in real time, and the torsional static rigidity of the screw rod is calculated. The method can realize nondestructive measurement of the static rigidity of the ball screw pair, and is easy to operate, high in reliability, high in experimental data repeatability, real and reliable in measured data and high in accuracy of measured results.

Claims (8)

1. A lossless measuring device for static rigidity of a ball screw pair is characterized by comprising a test bed body (1), a loading ball screw pair (2), a loading cross beam (5), a pressure sensor (6), a pressurizing device (8), an axial displacement measuring device (9), a measuring disc (10), a rotation measuring device (12), a rotation measuring reference component (13), a first guide rail (15), a ball screw pair to be measured (18), a torque transmission device (19), a torque sensor (20), a servo motor (21), a speed reducer (22), a synchronous belt wheel (23) and an industrial personal computer (24);
the test bed body (1) comprises a first bottom plate (1-1), a second bottom plate (1-2) and a fixed cross beam (1-3), the first bottom plate (1-1) is perpendicular to the second bottom plate (1-2), and the fixed cross beam (1-3) is arranged on the second bottom plate (1-2); a first guide column (3) which is parallel to the second bottom plate (1-2) and penetrates through the loading cross beam (5) is arranged on the first bottom plate (1-1), the tail end of the first guide column (3) is fixedly connected to the fixed cross beam (1-3), and the loading cross beam (5) can slide on the first guide column (3); the pair of loading ball screw pairs (2) are symmetrically distributed along the axial direction of the second bottom plate (1-2), one end of each loading ball screw pair is connected with the synchronous belt wheel (23), and the other end of each loading ball screw pair penetrates through the loading cross beam (5) and is fixed through the nut flange (4); a pressure sensor (6), a pressurizing device (8) and a ball screw pair to be measured (18) are sequentially arranged on the loading cross beam (5) along the symmetry axis of the pair of loading ball screw pairs (2), the ball screw pair to be measured (18) penetrates through the fixed cross beams (1-3) and is fixed through a first nut tool (11), a measuring disc (10) is arranged on the first nut tool (11), and an axial displacement measuring device (9) sleeved on the ball screw pair to be measured (18) is arranged between the measuring disc (10) and the pressurizing device (8); a first guide rail (15) is arranged on the second bottom plate (1-2), a torque sensor (20) is fixed on the first sliding block (16-1) and can slide along the first guide rail (15), and a torque transmission device (19) is arranged on the torque sensor (20); the tail end of the ball screw pair (18) to be tested is connected with the torque transmission device (19); n rotary measuring devices (12) sleeved on the ball screw pair (18) to be measured are arranged between the axial displacement measuring device (9) and the torque transmission device (19), each rotary measuring device (12) comprises a displacement sensor (37) and a displacement sensor supporting device, and the displacement sensors (37) are in contact with rotary measuring reference parts (13) arranged on the second bottom plate (1-2); the test bed is characterized in that a servo motor (21), a speed reducer (22), a synchronous belt wheel (23) and an industrial personal computer (24) are arranged on the test bed body (1), the industrial personal computer (24) controls the servo motor (21) to work and collects data of a pressure sensor (6), a displacement sensor (37) and a torque sensor (20), the servo motor (21) is connected with the speed reducer (22), and the speed reducer (22) is connected with the synchronous belt wheel (23);
the rotary measurement reference component (13) comprises a stainless steel plate (49), an aluminum frame (50) and a magnetic gauge stand (51), one end of the aluminum frame (50) is fixedly connected with the stainless steel plate (49), the other end of the aluminum frame is fixedly connected with the magnetic gauge stand (51) arranged on the second bottom plate (1-2), and the displacement sensor (37) is in contact with the stainless steel plate (49);
the static rigidity measuring device also comprises an adjustable v-shaped block (14) which is arranged on a third sliding block (16-3) of the first guide rail (15);
the adjustable v-shaped block (14) comprises a second base (52), a bottom plate (53), a second guide rail (54), a displacement device (56), a v-shaped block (57), a second guide column (58), a ball screw pair (59), a bearing seat (61), a deep groove ball bearing (62), a bearing end cover (63) and a handle (64), wherein the second base (52) is arranged on a third sliding block (16-3) of the first guide rail (15), the second base (52) is fixedly connected with the bottom plate (53), the bottom plate (53) is provided with the second guide rail (54), the displacement device (56) is arranged on a sliding block of the second guide rail (54), the central shaft of the bottom plate (53) is provided with the second guide column (58), the second guide column (58) is provided with the v-shaped block (57) which is contacted with the displacement device (56), and the ball screw pair (59) is fixed on the displacement device (56) through a second tool (60), one end of the ball screw pair (59) is matched with the inner ring of the deep groove ball bearing (62) and is in interference fit with the handle (64), wherein the deep groove ball bearing (62) is arranged on a bearing seat (61) fixed on the bottom plate (53).
2. The lossless ball screw pair static stiffness measurement device according to claim 1, wherein the static stiffness measurement device further comprises a tool auxiliary device (7) for assembling and disassembling the first nut tool (11), which is arranged on the second slider (16-2) of the first guide rail (15);
the tool auxiliary device (7) comprises a rotating plate (29), a supporting shaft (30), a supporting rod (31), a first base (32) and a baffle (33); first base (32) and second slider (16-2) link firmly, set up baffle (33) on first base (32), rotatable commentaries on classics board (29) are all connected at the both ends of baffle (33), and the both ends of first base (32) all set up perpendicularly and are used for supporting bracing piece (31) of changeing board (29), set up back shaft (30) that are used for bearing first nut frock (11) on changeing board (29).
3. The device for measuring the static rigidity of the lossless ball screw pair according to claim 1 or 2, wherein the first nut tooling (11) is divided into a left nut tooling and a right nut tooling, and taper holes (35) matched with the corresponding support shafts (30) are uniformly distributed on the first nut tooling.
4. The device for measuring the static rigidity of the lossless ball screw pair according to claim 3, wherein the pressurizing device (8) comprises an upper pressure plate (25), a steel ball (27) and a lower pressure plate (28) which are sequentially arranged from top to bottom, the upper pressure plate (25) is fixedly connected with the pressure sensor (6), the lower pressure plate (28) is in contact with the ball screw pair (18) to be measured, the upper pressure plate (25) and the lower pressure plate (28) are connected through a connecting rod (26), and the steel ball (27) for transmitting the axial load is arranged between the two pressure plates.
5. The device for measuring the static rigidity of the lossless ball screw pair according to claim 4, wherein the displacement sensor supporting device comprises a displacement sensor clamp (38), a clamp sleeve (39) and a fixing device (40), the fixing device (40) is sleeved on the ball screw pair (18) to be measured, the clamp sleeve (39) is fixedly connected onto the fixing device (40), the displacement sensor clamp (38) is fixedly connected onto the clamp sleeve (39), and the displacement sensor (37) is fixed in the sensor clamp (38).
6. The lossless ball screw pair static stiffness measurement apparatus according to claim 5, the fixing device (40) comprises a first thread bush (41), an outer elastic taper bush (42), an inner elastic taper bush (43) and a shell (44), the first threaded sleeve (41), the outer elastic taper sleeve (42) and the inner elastic taper sleeve (43) are all positioned in the shell (44), wherein the inner elastic taper sleeve (43) is sleeved on the ball screw pair (18) to be tested, the outer wall surface of the inner elastic taper sleeve (43) is a conical surface, the outer wall surface of the inner elastic taper sleeve (43) is matched with the inner wall surface of the outer elastic taper sleeve (42), the first thread sleeve (41) is positioned above the outer elastic taper sleeve (42), the outer elastic taper sleeve (42) and the inner elastic taper sleeve (43) are pressed tightly by matching with the inner thread of the outer shell (44), so that the rotation measuring device (12) is fixed on the ball screw pair (18) to be measured.
7. The lossless ball screw pair static rigidity measuring apparatus according to claim 5 or 6, the sensor clamp (38) comprises a clamp shell (45), a second thread bush (46), a screw rod (47) and a nylon plug (48), the clamp shell (45) is fixed on the clamp sleeve (39), a second thread sleeve (46), a screw rod (47) and a nylon plug (48) are arranged in the clamp shell (45), one end of the nylon plug (48) is provided with an internal thread, the other end is provided with a semicircular groove for fixing the displacement sensor (37), wherein the internal thread is matched with the external thread of the screw rod (47), the second thread bush (46) is sleeved on the screw rod (47) and is connected with the internal thread of the clamp shell (45), a pressure spring is also arranged on the screw rod (47) between the second thread bush (46) and the nylon plug (48), the nylon plug (48) is pressed against the sensor by adjusting the second threaded sleeve (46).
8. The non-destructive ball screw pair static stiffness measuring device according to claim 7, wherein the torque transfer device (19) comprises a connector (65) for connecting the torque transfer device (19) and the torque sensor (20), a flat key (66) for connecting the torque transfer device (19) and the ball screw pair (18) to be tested.
CN201910457438.5A 2019-05-29 2019-05-29 Nondestructive ball screw pair static rigidity measuring device Active CN110207981B (en)

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CN111060311B (en) * 2019-12-25 2021-12-24 慈兴集团有限公司 Improvement type ball efficiency test frock
CN111855196B (en) * 2020-07-10 2022-08-19 南京理工大学 Torsional rigidity testing method for ball screw pair
CN112096816B (en) * 2020-09-14 2021-09-14 山东大学 Magnetic suspension ball screw pair

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JPH0541934B2 (en) * 1988-04-06 1993-06-25 Honda Motor Co Ltd
CN102944472B (en) * 2012-11-14 2014-11-12 南京理工大学 Device and method for measuring axial static rigidity of ball screw pair
CN103018104B (en) * 2012-12-26 2015-04-22 南京理工大学 Horizontal measuring device for axial static rigidity of ball screw pair and method thereof
CN103115772B (en) * 2013-01-25 2015-01-21 南京理工大学 Axial nut loading mechanism for ball screen assemblies
CN203616122U (en) * 2013-11-28 2014-05-28 上海理工大学 Static stiffness measuring device of ball screw pair
CN103926077B (en) * 2014-04-24 2016-03-30 清华大学 A kind of ball-screw Static and dynamic stiffness comprehensive measurement device
CN105841958B (en) * 2016-05-20 2018-09-25 南京理工大学 A kind of ball screw assembly, Static stiffness measuring device with rotation compensation function
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DE102016013890A1 (en) * 2016-11-21 2018-05-24 Rheinisch-Westfälische Technische Hochschule (Rwth) Aachen Method for determining the axle load on linear and rotary axes

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