A performance testing device for servo motor

Abstract

The present invention discloses a performance testing device for a servo motor, and the present invention relates to the technical field of servo motors, including a test bench, a test servo motor is arranged on the upper part of the test bench, the output shaft of the test servo motor is connected with a coupling 1, a torque testing assembly is arranged on the upper part of the test bench at one end of the coupling 1 away from the output shaft of the test servo motor, and a hydraulic cylinder is installed at the bottom of the test bench, and a wear-resistant testing assembly is also arranged on the upper part of the test bench. The performance testing device for a servo motor can test the torque of the output shaft of the servo motor, and by adjusting the strength of the test spring, the torque of the output shaft of the servo motor can be tested under external forces of different sizes, the operation is convenient, the test accuracy is high, the wear resistance of the output shaft of the servo motor can be tested, and the wear resistance of the output shaft under different friction coefficients can be adjusted as needed.

Description

Technical Field

[0001] The invention relates to the technical field of servo motors, in particular to a performance testing device for servo motors. Background Art

[0002] As a high-precision and high-reliability actuator, servo motors are widely used in industrial automation, robotics, CNC machine tools and other fields. The motor shaft is an important component of the servo motor, so it is very necessary to test the servo motor output shaft.

[0003] However, there is currently no device specifically for testing the output shaft of a servo motor, and thus a device specifically for testing the output shaft of a servo motor needs to be developed. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a performance test device for a servo motor, which solves the problem that there is currently no test device specifically for the output shaft of a servo motor.

[0005] To achieve the above objectives, the present invention is implemented through the following technical scheme: a performance testing device for a servo motor, comprising a test bench, a test servo motor is arranged on the upper part of the test bench, the output shaft of the test servo motor is connected with a coupling 1, a torque testing assembly is arranged on the upper part of the test bench at one end of the coupling 1 away from the output shaft of the test servo motor, and a hydraulic cylinder is installed at the bottom of the test bench, and a wear-resistant testing assembly is also arranged on the upper part of the test bench.

[0006] The torque testing assembly includes a limit seat, the output shaft of the hydraulic cylinder is connected to the lower side of the limit seat for driving it to move up and down, and one side of the limit seat is horizontally connected to the limit shaft, the external transverse sliding sleeve of the limit shaft is provided with a rack, and the bottom of the rack is meshed with a driving gear, the torque testing assembly also includes a fixed seat installed on the upper part of the test bench, the driving gear is rotatably arranged on one side of the fixed seat, and the end of the driving gear away from the fixed seat is connected with a coupling 2 corresponding to coupling 1, the outside of the limit shaft is located between the limit seat and the rack, and the sliding sleeve is provided with a movable plate, and the outside of the limit shaft is located between the movable plate and the rack, and a test spring is provided, and the two ends of the test spring are respectively connected to one side of the movable plate and one end of the rack, and the torque testing assembly also includes an adjusting part for adjusting the elastic force of the test spring.

[0007] Preferably, the adjusting part comprises a handle rotatably arranged on a side of the limiting seat away from the limiting axis, one end of the handle is connected to a screw at a position on the other side of the limiting seat, and the movable plate is screwed to the screw through a thread.

[0008] Preferably, a counting assembly is provided on the side of the fixed seat away from the driving gear, and the counting assembly includes a rotating shaft rotatably provided on the side of the fixed seat away from the driving gear, one end of the rotating shaft is connected to one end of the driving gear, and the other end of the rotating shaft is connected to a stopper, and a photoelectric sensor is also installed on one side of the fixed seat at a position below the rotating shaft, so that the stopper blocks the photoelectric sensor once every rotation.

[0009] Preferably, the wear-resistant test assembly includes a shell seat, both sides of the shell seat are provided with through grooves communicated with the interior thereof, the output shaft of the test servo motor passes through the interior of the shell seat through the through groove, and a bolt rod is screwed into one side of the shell seat through a thread, an annular plate is rotatably provided on the inner wall of the shell seat, a plurality of grooves are equidistantly provided on the outer wall of the annular plate, and an adjustment groove for driving the annular plate to rotate is provided on the side of the shell seat away from the bolt rod, and a plurality of friction parts corresponding to each groove are provided on the inner wall of the annular plate.

[0010] Preferably, the friction member includes limit springs arranged on the inner wall of the annular plate on both sides of the groove, an arc-shaped friction plate is arranged between one ends of the two limit springs, the friction coefficient of the inner arc surface of each friction plate is different, and the outer arc surface of the friction plate is provided with a positioning cylinder corresponding to the groove, and the upper part of the fixed seat is also provided with a displacement drive component for driving the wear-resistant test component to move back and forth.

[0011] Preferably, the displacement drive assembly includes an L-shaped seat arranged on the upper part of the fixed seat, a turntable is rotatably arranged on the upper part of one end of the L-shaped seat away from the fixed seat, an eccentric rod is hinged at the upper edge of the turntable, and the end of the eccentric rod away from the turntable is hinged to the upper part of the shell seat.

[0012] Preferably, a main bevel gear is provided at the outer edge of the turntable, and a slave bevel gear matching the main bevel gear is rotatably provided at one end of the L-shaped seat away from the fixed seat, the slave bevel gear is meshed with the main bevel gear, and a transmission wheel is provided on one side of the slave bevel gear, a transmission groove is provided on the outer wall of the coupling 2, and the transmission wheel and the coupling 2 are connected by belt drive.

[0013] Preferably, a guide rod is connected to an edge of one side of the housing seat, a limiting sleeve is provided on one side of the fixing seat, and the guide rod slides transversely through the limiting sleeve.

[0014] The present invention provides a performance test device for a servo motor, which has the following beneficial effects compared with the prior art:

[0015] The performance test device for the servo motor can test the torque of the servo motor output shaft, and by adjusting the strength of the test spring, can test the torque of the servo motor output shaft under external forces of different magnitudes, and has convenient operation and high test accuracy.

[0016] The performance testing device for a servo motor can test the wear resistance of the output shaft of the servo motor, and can test the wear resistance of the output shaft under different friction coefficients as required. In the test, the wear resistance test component can be continuously moved back and forth by rotating the output shaft, and the output shaft is subjected to rotational friction and sliding friction, thereby better testing the wear resistance of the output shaft of the servo motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is a structural schematic diagram of the torque testing assembly of the present invention;

[0019] Figure 3 For the present invention Figure 2 A partial enlarged schematic diagram of the structure at A in the middle;

[0020] Figure 4 It is a schematic structural diagram of the wear-resistant test assembly of the present invention;

[0021] Figure 5 It is a schematic diagram of the internal structure of the housing seat of the present invention;

[0022] Figure 6 It is a structural schematic diagram of the displacement drive assembly of the present invention;

[0023] Figure 7 It is a schematic diagram of the planar structure of the displacement drive assembly of the present invention.

[0024] In the figure: 1, test bench; 2, test servo motor; 3, coupling 1; 4, torque test assembly; 41, limit seat; 42, limit shaft; 43, rack; 44, drive gear; 45, coupling 2; 46, fixed seat; 461, limit sleeve; 462, rotating shaft; 463, stopper; 464, photoelectric sensor; 47, displacement drive assembly; 471, L-shaped seat; 472, turntable; 473, eccentric rod; 474 , main bevel gear; 475, slave bevel gear; 476, transmission wheel; 477, belt; 48, movable plate; 49, test spring; 410, handle; 411, screw; 5, hydraulic cylinder; 6, wear-resistant test component; 61, housing seat; 6101, guide rod; 62, through groove; 63, bolt rod; 64, annular plate; 65, groove; 66, adjustment groove; 67, limit spring; 68, friction plate; 69, positioning cylinder. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-Figure 7 , the present invention provides three technical solutions:

[0027] For example, see Figure 1 In an embodiment of the present invention, a performance testing device for a servo motor includes a test bench 1, a test servo motor 2 is arranged on the upper part of the test bench 1, the output shaft of the test servo motor 2 is connected with a coupling 3, a torque testing component 4 is arranged on the upper part of the test bench 1 at one end of the coupling 3 away from the output shaft of the test servo motor 2, and a hydraulic cylinder 5 is installed at the bottom of the test bench 1, and a wear-resistant testing component 6 is also arranged on the upper part of the test bench 1.

[0028] See also Figure 2 In the embodiment of the present invention, the torque testing assembly 4 includes a limit seat 41, the output shaft of the hydraulic cylinder 5 is connected to the lower side of the limit seat 41 for driving it to move up and down, and one side of the limit seat 41 is horizontally connected to a limit shaft 42, the outer lateral sliding sleeve of the limit shaft 42 is provided with a rack 43, and the bottom of the rack 43 is meshed with a driving gear 44, the torque testing assembly 4 also includes a fixed seat 46 installed on the upper part of the test bench 1, the driving gear 44 is rotatably arranged on one side of the fixed seat 46, and the end of the driving gear 44 away from the fixed seat 46 is connected with a coupling 2 45 corresponding to the coupling 1 3, the outer part of the limit shaft 42 is located between the limit seat 41 and the rack 43, and the sliding sleeve is provided with a moving plate 48, and the outer part of the limit shaft 42 is located between the moving plate 48 and the rack 43. The position is provided with a test spring 49, and the two ends of the test spring 49 are respectively connected to one side of the moving plate 48 and one end of the rack 43, and the torque testing assembly 4 also includes an adjusting part for adjusting the elastic force of the test spring 49.

[0029] In the above scheme: the test servo motor 2 is working, the test servo motor 2 drives the coupling 1 3 to rotate, the coupling 1 3 drives the coupling 2 45 to rotate, the coupling 2 45 drives the driving gear 44 to rotate, and the driving gear 44 drives the rack 43 meshing therewith to slide on the limit shaft 42, and under the elasticity of the test spring 49, the movement of the rack 43 will be hindered. When the elastic force of the test spring 49 makes the rack 43 unable to continue to move, it is the limit of the rotation of the output shaft of the test servo motor 2, thereby judging the torque condition of the output shaft of the test servo motor 2.

[0030] For further information, see Figure 2In the embodiment of the present invention, the adjustment part includes a handle 410 rotatably arranged on the side of the limit seat 41 away from the limit shaft 42, one end of the handle 410 is located on the other side of the limit seat 41 and is connected to a screw 411, and the movable plate 48 is screwed to the screw 411 through a thread. The screw 411 is driven to rotate by rotating the handle 410, and the screw 411 drives the movable plate 48 to move. The movable plate 48 will adjust the elastic force of the test spring 49, so as to test the distance that the rack 43 can move under different external forces, thereby testing the torque of the output shaft of the test servo motor 2 under external forces of different sizes.

[0031] For further information, see Figure 3 In the embodiment of the present invention, a counting component is provided on the side of the fixed seat 46 away from the driving gear 44, and the counting component includes a rotating shaft 462 rotatably provided on the side of the fixed seat 46 away from the driving gear 44, one end of the rotating shaft 462 is connected to one end of the driving gear 44, and the other end of the rotating shaft 462 is connected to a stopper 463, and a photoelectric sensor 464 is also installed on one side of the fixed seat 46 at a position below the rotating shaft 462, so that the stopper 463 will block the photoelectric sensor 464 once every time it rotates one circle. When the driving gear 44 rotates, the rotating shaft 462 drives the stopper 463 to rotate, and the stopper 463 will block the photoelectric sensor 464 once every time it rotates one circle, so that the number of circles rotated by the driving gear 44 can be judged.

[0032] The second embodiment is different from the first embodiment in that:

[0033] See also Figure 4-5 In the embodiment of the present invention, the wear-resistant test assembly 6 includes a housing seat 61, and both sides of the housing seat 61 are provided with through grooves 62 communicated with the interior thereof. The output shaft of the test servo motor 2 passes through the interior of the housing seat 61 through the through groove 62, and a bolt rod 63 is screwed into one side of the housing seat 61 through a thread, and an annular plate 64 is rotatably provided on the inner wall of the housing seat 61, and a plurality of grooves 65 are equidistantly provided on the outer wall of the annular plate 64, and an adjusting groove 66 for driving the annular plate 64 to rotate is provided on the side of the housing seat 61 away from the bolt rod 63, and a plurality of friction members corresponding to each groove 65 are provided on the inner wall of the annular plate 64.

[0034] See also Figure 4-5In the embodiment of the present invention, the friction member includes a limit spring 67 arranged on the inner wall of the annular plate 64 and located on both sides of the groove 65. An arc-shaped friction plate 68 is arranged between one end of the two limit springs 67. The friction coefficient of the inner arc surface of each friction plate 68 is different, and the outer arc surface of the friction plate 68 is provided with a positioning cylinder 69 corresponding to the groove 65, so that when the positioning cylinder 69 corresponds to the bolt rod 63, by adjusting the bolt rod 63, one end of the bolt rod 63 can pass through the groove 65 on the annular plate 64 and be inserted into the positioning cylinder 69, thereby promoting the movement of the friction plate 68, so that it can be pressed against the output shaft of the test servo motor 2 to rub the output shaft. The upper part of the fixed seat 46 is also provided with a displacement driving component 47 for driving the wear-resistant test component 6 to move back and forth.

[0035] In the above scheme: after the torque test is completed, the hydraulic cylinder 5 drives the limit seat 41 to move upward, so that the rack 43 leaves the position of the driving gear 44, so that the two are not engaged, and then the annular plate 64 is rotated through the adjustment groove 66 to make the friction plate 68 with the required friction coefficient move to the rotation position of the bolt rod 63, and then the bolt rod 63 is rotated to insert one end of it into the positioning cylinder 69, and the bolt rod 63 is continued to be rotated, and the elasticity of the limit spring 67 is used to move the friction plate 68 to the output shaft of the test servo motor 2, so that when the output shaft rotates, the friction plate 68 will rub on the output shaft to perform a wear resistance test.

[0036] Embodiment 3 is different from Embodiment 1 in that:

[0037] See also Figure 6-7 In the embodiment of the present invention, the displacement driving assembly 47 includes an L-shaped seat 471 arranged on the upper part of the fixed seat 46, and a turntable 472 is rotatably arranged on the upper part of one end of the L-shaped seat 471 away from the fixed seat 46, and an eccentric rod 473 is hinged at the upper edge of the turntable 472, and the end of the eccentric rod 473 away from the turntable 472 is hinged to the upper part of the shell seat 61.

[0038] See also Figure 6-7 In the embodiment of the present invention, a main bevel gear 474 is provided at the outer edge of the turntable 472, and a slave bevel gear 475 matched with the main bevel gear 474 is rotatably provided at one end of the L-shaped seat 471 away from the fixed seat 46. The slave bevel gear 475 is meshed with the main bevel gear 474, and a transmission wheel 476 is provided on one side of the slave bevel gear 475. A transmission groove is provided on the outer wall of the coupling 45, and the transmission wheel 476 and the coupling 45 are connected by a belt 477. When testing the torque performance, the belt 477 is removed, and when testing the friction performance, the belt 477 is installed again. By providing a transmission groove on the coupling 45, the belt 477 is prevented from being offset.

[0039] In the above scheme: during the wear resistance test, the belt 477 is respectively put onto the transmission wheel 476 and the coupling 2 45, so that when the output shaft of the test servo motor 2 rotates, the coupling 1 3 will drive the coupling 2 45 to rotate, and the coupling 2 45 will cause the belt 477 to drive the transmission wheel 476 to rotate, and the transmission wheel 476 will cause the slave bevel gear 475 to drive the main bevel gear 474 meshing with it to rotate, and the main bevel gear 474 will drive the turntable 472 to rotate, and the turntable 472 will cause the eccentric rod 473 to perform eccentric movement, and the eccentric rod 473 will drive the housing seat 61 to move back and forth continuously, so that the friction plate 68 moves back and forth on the output shaft for friction, thereby realizing the test of rotational friction and sliding friction, and improving the accuracy of the wear resistance test of the output shaft of the test servo motor 2.

[0040] For further information, see Figure 2 and Figure 4 In the embodiment of the present invention, a guide rod 6101 is connected to the edge of one side of the shell seat 61, and a limiting sleeve 461 is provided on one side of the fixed seat 46. The guide rod 6101 slides horizontally through the limiting sleeve 461. When the shell seat 61 moves, the guide rod 6101 will slide in the limiting sleeve 461, thereby playing a limiting and guiding role for the shell seat 61.

[0041] Working principle: Before testing, connect coupling 1 3 to the output shaft of the test servo motor 2, then clamp coupling 1 3 onto coupling 2 45, and the hydraulic cylinder 5 drives the limit seat 41 to move downward, so that the rack 43 is meshed with the driving gear 44;

[0042] Then, the test servo motor 2 is put into operation, the test servo motor 2 drives the coupling 1 3 to rotate, the coupling 1 3 drives the coupling 2 45 to rotate, the coupling 2 45 drives the driving gear 44 to rotate, the driving gear 44 drives the rack 43 meshing therewith to slide on the limit shaft 42, and under the elasticity of the test spring 49, the movement of the rack 43 will be hindered, and when the driving gear 44 rotates, the rotating shaft 462 drives the block 463 to rotate, and the block 463 blocks the photoelectric sensor 464 once for each rotation, so that the number of rotations of the driving gear 44 can be determined, and when the elastic force of the test spring 49 makes the rack 43 unable to move further, it is the limit of the rotation of the output shaft of the test servo motor 2, so as to determine the torque of the output shaft of the test servo motor 2;

[0043] By rotating the handle 410, the screw 411 is driven to rotate, and the screw 411 drives the moving plate 48 to move. The moving plate 48 adjusts the elastic force of the test spring 49, thereby testing the distance that the rack 43 can move under different external forces, thereby testing the torque of the output shaft of the test servo motor 2 under different external forces;

[0044] After the torque test is completed, the hydraulic cylinder 5 drives the limit seat 41 to move upward, so that the rack 43 leaves the position of the driving gear 44, so that the two are not meshed, and then the annular plate 64 is rotated through the adjustment groove 66 to move the friction plate 68 with the required friction coefficient to the rotation position of the bolt rod 63, and then the bolt rod 63 is rotated to insert one end of it into the positioning cylinder 69, and the bolt rod 63 is continued to be rotated, and the elasticity of the limit spring 67 is used to move the friction plate 68 to the output shaft of the test servo motor 2, so that when the output shaft rotates, the friction plate 68 will rub on the output shaft to perform the wear resistance test;

[0045] During the wear resistance test, the belt 477 is respectively put onto the transmission wheel 476 and the coupling 2 45. In this way, when the output shaft of the test servo motor 2 rotates, the coupling 1 3 will drive the coupling 2 45 to rotate, and the coupling 2 45 will cause the belt 477 to drive the transmission wheel 476 to rotate, and the transmission wheel 476 will cause the slave bevel gear 475 to drive the main bevel gear 474 meshing with it to rotate, and the main bevel gear 474 will drive the turntable 472 to rotate, and the turntable 472 will cause the eccentric rod 473 to perform eccentric movement, and the eccentric rod 473 will drive the housing seat 61 to move back and forth continuously, so that the friction plate 68 moves back and forth on the output shaft for friction, thereby realizing the test of rotational friction and sliding friction, and improving the accuracy of the wear resistance test of the output shaft of the servo motor 2.

[0046] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A performance test device for a servo motor, comprising a test bench (1), characterized in that: A test servo motor (2) is arranged on the upper part of the test bench (1); the output shaft of the test servo motor (2) is connected to a coupling 1 (3); a torque test assembly (4) is arranged on the upper part of the test bench (1) at one end of the coupling 1 (3) away from the output shaft of the test servo motor (2); a hydraulic cylinder (5) is installed on the bottom of the test bench (1); and a wear test assembly (6) is also arranged on the upper part of the test bench (1); The torque test assembly (4) comprises a limit seat (41), the output shaft of the hydraulic cylinder (5) is connected to the lower side of the limit seat (41) for driving the limit seat to move up and down, and one side of the limit seat (41) is horizontally connected to a limit shaft (42), the outer lateral sliding sleeve of the limit shaft (42) is provided with a rack (43), and the bottom of the rack (43) is meshed with a driving gear (44), and the torque test assembly (4) also comprises a fixed seat (46) installed on the upper part of the test bench (1), and the driving gear (44) is rotatably arranged on one side of the fixed seat (46), and the driving gear (44) is far A coupling 2 (45) corresponding to the coupling 1 (3) is connected to one end of the fixed seat (46); a movable plate (48) is slidably sleeved on the outside of the limit shaft (42) at a position between the limit seat (41) and the rack (43); and a test spring (49) is sleeved on the outside of the limit shaft (42) at a position between the movable plate (48) and the rack (43); two ends of the test spring (49) are respectively connected to one side of the movable plate (48) and one end of the rack (43); and the torque test assembly (4) further includes an adjustment portion for adjusting the elastic force of the test spring (49); The wear-resistant test assembly (6) comprises a housing seat (61), both sides of the housing seat (61) are provided with through grooves (62) communicating with the interior thereof, the output shaft of the test servo motor (2) passes through the interior of the housing seat (61) through the through grooves (62), and a bolt rod (63) is screwed into one side of the housing seat (61) through a thread, an annular plate (64) is rotatably provided on the inner wall of the housing seat (61), a plurality of grooves (65) are equidistantly provided on the outer wall of the annular plate (64), and an adjusting groove (66) for driving the annular plate (64) to rotate is provided on the side of the housing seat (61) away from the bolt rod (63), and a plurality of friction members corresponding to the respective grooves (65) are provided on the inner wall of the annular plate (64); The friction member comprises a limit spring (67) arranged on the inner wall of the annular plate (64) and located on both sides of the groove (65); an arc-shaped friction plate (68) is arranged between one end of the two limit springs (67); the friction coefficient of the inner arc surface of each friction plate (68) is different; and a positioning cylinder (69) corresponding to the groove (65) is arranged on the outer arc surface of the friction plate (68); and a displacement driving component (47) for driving the wear-resistant test component (6) to move back and forth is also arranged on the upper part of the fixed seat (46); The displacement drive assembly (47) comprises an L-shaped seat (471) arranged on the upper part of the fixed seat (46); a rotating disk (472) is rotatably arranged on the upper part of one end of the L-shaped seat (471) away from the fixed seat (46); an eccentric rod (473) is hinged at the upper edge of the rotating disk (472); and one end of the eccentric rod (473) away from the rotating disk (472) is hinged to the upper part of the housing seat (61); A main bevel gear (474) is arranged at the outer edge of the rotating disk (472); a slave bevel gear (475) adapted to the main bevel gear (474) is rotatably arranged at one end of the L-shaped seat (471) away from the fixed seat (46); the slave bevel gear (475) is meshed with the main bevel gear (474); a transmission wheel (476) is arranged on one side of the slave bevel gear (475); a transmission groove is arranged on the outer wall of the second coupling (45); and the transmission wheel (476) and the second coupling (45) are connected to each other by a belt (477).

2. A servo motor performance test device according to claim 1, characterized in that: The adjusting portion comprises a handle (410) rotatably arranged on a side of the limiting seat (41) away from the limiting shaft (42); one end of the handle (410) is located at the other side of the limiting seat (41) and is connected to a screw rod (411); and the movable plate (48) is screwed onto the screw rod (411) via a thread.

3. A servo motor performance test device according to claim 1, characterized in that: A counting assembly is provided on a side of the fixed seat (46) away from the driving gear (44), and the counting assembly comprises a rotating shaft (462) rotatably provided on a side of the fixed seat (46) away from the driving gear (44), one end of the rotating shaft (462) is connected to one end of the driving gear (44), and the other end of the rotating shaft (462) is connected to a stopper (463), and a photoelectric sensor (464) is also installed on one side of the fixed seat (46) at a position below the rotating shaft (462), so that the stopper (463) blocks the photoelectric sensor (464) once every rotation.

4. A servo motor performance test device according to claim 1, characterized in that: A guide rod (6101) is connected to an edge of one side of the housing seat (61), a limiting sleeve (461) is provided on one side of the fixing seat (46), and the guide rod (6101) slides transversely through the limiting sleeve (461).

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