A servo motor performance testing platform

Abstract

This invention belongs to the field of servo motor testing technology, specifically relating to a servo motor performance testing platform. It includes a test bench for placing the motor under test and a processor. A mounting frame is fixedly connected to the test bench, and a test module is installed on the test bench. The test module is used to detect the speed and torque of the motor under test. A coupling unit is installed between the test module and the motor under test on the test bench. The motor under test is connected to the test module via the coupling unit. A vertical clamping mechanism is installed on the mounting frame, and a horizontal clamping mechanism is installed on the test bench. The purpose is to: through the cooperation of the vertical clamping mechanism, the horizontal clamping mechanism, and the coupling unit, the vertical clamping mechanism presses the motor under test firmly onto the test bench, and the horizontal clamping mechanism pushes the output shaft of the motor under test into the coupling unit, replacing manual disassembly and assembly of the motor under test and improving testing efficiency.

Description

Technical Field

[0001] This invention belongs to the field of servo motor testing technology, specifically relating to a servo motor performance testing platform. Background Technology

[0002] Servo motors are a common actuator in automatic control systems. They enable highly accurate control of speed and position, converting voltage signals into torque and speed to drive the controlled object. To ensure the quality of servo motors, their performance is tested at the factory.

[0003] In the existing servo motor testing process, the motor under test and the hysteresis brake are respectively mounted on the test platform. The output shaft of the motor under test is connected to the sensor and the hysteresis brake in sequence through a coupling. After the motor under test is powered on, the load is adjusted through the hysteresis brake, and the sensor measures various electrical parameters.

[0004] During the testing process, the motor and coupling under test need to be manually installed and removed, which makes it inconvenient to disassemble and install the motor under test and affects the testing efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a servo motor performance testing platform. Through the cooperation of a vertical clamping mechanism, a horizontal clamping mechanism, and a coupling unit, the vertical clamping mechanism presses the motor under test onto the test table, and the horizontal clamping mechanism pushes the output shaft of the motor under test into the coupling unit, replacing the manual disassembly and assembly of the motor under test and improving testing efficiency.

[0006] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows:

[0007] A servo motor performance testing platform includes a processor and a test bench for placing the motor under test. A mounting frame is fixedly connected to the test bench, and a test module is mounted on the test bench. The test module is used to detect the speed and torque of the motor under test. A coupling unit is mounted on the test bench, and the motor under test is connected to the test module through the coupling unit. A vertical clamping mechanism is mounted on the mounting frame, and a horizontal clamping mechanism is mounted on the test bench. The vertical clamping mechanism is used to press the motor under test, and the horizontal clamping mechanism pushes the output shaft of the motor under test into the coupling unit. The test module, the motor under test, the vertical clamping mechanism, and the horizontal clamping mechanism are all signal-connected to the processor.

[0008] Furthermore, the vertical clamping mechanism includes a cylinder, which is fixedly mounted on a fixed frame. A V-shaped plate is fixedly mounted on the moving end of the cylinder above the motor under test. This structural design, by setting the V-shaped plate, moves the motor shaft of the motor under test to the center of the test platform, and can accommodate various specifications of motors under test.

[0009] Furthermore, mounting grooves are provided on both sides of the V-shaped plate, and rotating rollers are mounted side-by-side and laterally within the mounting grooves on the test platform. This structural design allows the rotating rollers to contact the motor under test. When the lateral clamping mechanism clamps the motor under test, rolling friction occurs between the motor under test and the rotating rollers, facilitating the movement of the motor under test.

[0010] Further specifying, the transverse clamping mechanism includes two threaded rods and a first drive motor. A first guide groove is provided on the test platform. The two threaded rods are coaxially connected and rotatably mounted within the first guide groove. The threads on the two threaded rods have opposite directions of rotation. The first drive motor is fixedly mounted on the test platform, and its output shaft is drively connected to the threaded rods. Clamping plates are screwed to both ends of each threaded rod, and the clamping plates are slidably connected to the first guide groove. The motor under test and the test module are both located between the two clamping plates. This structural design, by having the first drive motor drive the two clamping plates closer together, pushes the output shaft of the motor under test and the test module into the coupling unit, replacing manual installation and improving testing efficiency.

[0011] Further specifying, the test bench includes a base with a second guide groove. A lifting mechanism is fixedly installed within the second guide groove on the base. A lifting platform is driven to the moving end of the lifting mechanism. The coupling unit and the test module are both mounted on the moving end of the lifting platform. This structural design, by controlling the height of the coupling unit and the test module through the lifting platform, ensures that the insertion port of the coupling unit is aligned with the output shaft of the motor under test, thus accommodating various specifications of motors under test.

[0012] Further specifying, the test module includes a sensor unit and a load unit. A movable frame is slidably mounted laterally on the moving end of the lifting platform. The movable frame is vertically slidably connected to an adjacent top plate. The load unit is mounted on the movable frame. The sensor unit is mounted between the load unit and the coupling unit. A connecting shaft is drivenly mounted on the sensor unit. One end of the connecting shaft is drivenly connected to the load unit, and the free end of the connecting shaft is engaged with the coupling unit. With this structural design, the load unit uses a hysteresis brake to adjust the test load of the motor under test, and the sensor unit uses a torque sensor and an encoder to detect the torque and speed of the motor under test.

[0013] Further defining the coupling unit, it includes a rotating disk mounted on a test bench. The rotating disk has multiple mounting holes circumferentially and multiple first engaging slots circumferentially. The first engaging slots communicate with the mounting holes. A rotating column is rotatably mounted within each mounting hole. A second engaging slot is formed below the first engaging slot on the rotating column. An engaging block is vertically slidably mounted within the first engaging slot. A first compression spring is fixedly mounted between the engaging block and the rotating disk within the first engaging slot. A push rod is fixedly mounted at the end of the sensor unit near the rotating disk. The end of the engaging block near the push rod is inclined from top to bottom towards the end away from the push rod, and the push rod rests against the engaging block. A second drive motor is fixedly mounted on the moving end of the lifting platform. The output shaft of the second drive motor is connected to the rotating disk via a transmission connection. A connecting key is fixedly connected at the end of the rotating column near the motor under test. A locking block is fixedly connected at the end of the rotating column near the second engaging slot. A locking groove is formed at the free end of the connecting shaft. This structural design uses a second drive motor to rotate the rotating disk, aligning different rotating columns with the output shaft of the motor under test. By setting a locking block and a push rod, when the rotating column is in use, the locking block disengages from the second locking groove, allowing the rotating column to rotate freely. When the rotating column is not in use, the locking block inserts into the second locking groove, preventing the rotating column from rotating. This ensures that the position of the rotating column is fixed when the connecting shaft is inserted, preventing misalignment.

[0014] Further specifying, the connecting key can be either a first connecting key or a second connecting key. The second connecting key includes a fixing block, the inner side of which has a third engaging groove. A T-shaped block is vertically slidably mounted on the fixing block within the third engaging groove. A second compression spring is fixedly connected between the T-shaped block and the fixing block via the third engaging groove. This structural design allows the first and second connecting keys to be designed in different sizes to suit various specifications of the tested motor. When the connecting key cannot be directly inserted laterally into the keyway on the output shaft, the second connecting key is used for installation, enabling the coupling unit to adapt to various specifications of the tested motor.

[0015] The invention employing the above technical solution has the following advantages:

[0016] 1. Through the cooperation of the vertical clamping mechanism, the horizontal clamping mechanism and the coupling unit, the vertical clamping mechanism presses the motor under test onto the test table, and the horizontal clamping mechanism pushes the output shaft of the motor under test into the coupling unit, which replaces the manual disassembly and assembly of the motor under test and improves the testing efficiency.

[0017] 2. By setting up a V-shaped plate and a lifting platform, the lifting platform controls the height of the coupling unit and the test module. The insertion port of the coupling unit is aligned with the output shaft of the motor under test. The V-shaped plate moves the motor shaft of the motor under test to the center of the test platform, which can accommodate various specifications of motors under test.

[0018] 3. The rotating disk is driven by the second drive motor to rotate, so that different rotating columns are aligned with the output shaft of the motor under test. The first and second connecting keys can be designed with different sizes to suit various specifications of motors under test.

[0019] 4. By setting a locking block and a push rod, when the rotating column is in use, the locking block disengages from the second locking groove, and the rotating column can rotate freely. When the rotating column is not in use, the locking block is inserted into the second locking groove, and the rotating column cannot rotate, ensuring that the position of the rotating column is fixed when the connecting shaft is inserted, and there will be no misalignment. Attached Figure Description

[0020] The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0021] Figure 1 This is a schematic diagram of the structure of an embodiment of a servo motor performance testing platform according to the present invention. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the structure of an embodiment of a servo motor performance testing platform according to the present invention. Figure 2 ;

[0023] Figure 3 This is a cross-sectional view of an embodiment of a servo motor performance testing platform according to the present invention;

[0024] Figure 4 for Figure 3 Enlarged view of the structure at point A;

[0025] Figure 5 This is a schematic diagram of the rotating column and the second connecting key portion of an embodiment of a servo motor performance testing platform according to the present invention;

[0026] The symbols for the main components are explained below:

[0027] Motor under test 1

[0028] Test stand 2, mounting bracket 21, base 22, lifting platform 23, lifting mechanism 24

[0029] Test module 3, sensor unit 31, load unit 32, moving frame 33, connecting shaft 34, push rod 35.

[0030] Coupling unit 4, rotating disk 41, mounting hole 42, first engagement groove 43, rotating column 44, locking block 441, second engagement groove 45, locking block 46, second drive motor 47, first connecting key 48, second connecting key 49, fixing block 491, T-shaped block 492.

[0031] Vertical clamping mechanism 5, cylinder 51, V-shaped plate 52, rotating roller 53

[0032] The transverse clamping mechanism 6, the threaded rod 61, the first drive motor 62, and the clamping plate 63. Detailed Implementation

[0033] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that similar or identical parts are referred to by the same reference numerals in the drawings or description. Implementations not shown or described in the drawings are forms known to those skilled in the art. In addition, directional terms mentioned in the embodiments, such as "up," "down," "top," "bottom," "left," "right," "front," and "back," are only for reference to the directions in the drawings and are not intended to limit the scope of protection of the present invention.

[0034] like Figures 1-5 As shown, a servo motor performance testing platform of the present invention includes a processor and a test bench 2 for placing a motor under test 1. A fixing frame 21 is fixedly connected to the test bench 2. A test module 3 is installed on the test bench 2. The test module 3 is used to detect the speed and torque of the motor under test 1. A coupling unit 4 is installed between the test module 3 and the motor under test 1 on the test bench 2. The motor under test 1 is connected to the test module 3 through the coupling unit 4. A vertical clamping mechanism 5 is installed on the fixing frame 21. A horizontal clamping mechanism 6 is installed on the test bench 2. The vertical clamping mechanism 5 is used to press the motor under test 1. The horizontal clamping mechanism 6 pushes the output shaft of the motor under test 1 into the coupling unit 4. The test module 3, the motor under test 1, the vertical clamping mechanism 5, and the horizontal clamping mechanism 6 are all signal connected to the processor.

[0035] like Figure 2 As shown, the vertical clamping mechanism 5 includes a cylinder 51, which is fixedly mounted on the fixed frame 21. A V-shaped plate 52 is fixedly mounted on the moving end of the cylinder 51 above the motor under test 1. By setting the V-shaped plate 52, the motor shaft of the motor under test 1 is moved to the center on the test bench 2, which can accommodate various specifications of the motor under test 1.

[0036] like Figure 2 As shown, mounting slots are provided on both sides of the V-shaped plate 52, and the test platform 2 is equipped with rotating rollers 53 arranged in parallel and rotatably within the mounting slots. The rotating rollers 53 contact the motor under test 1, and when the transverse clamping mechanism 6 clamps the motor under test 1, there is rolling friction between the motor under test 1 and the rotating rollers 53, which facilitates pushing the motor under test 1.

[0037] like Figure 1As shown, the transverse clamping mechanism 6 includes two threaded rods 61 and a first drive motor 62. A first guide groove is provided on the test bench 2. The two threaded rods 61 are coaxially connected and rotatably installed in the first guide groove. The threads on the two threaded rods 61 have opposite directions of rotation. The first drive motor 62 is fixedly installed on the test bench 2, and its output shaft is connected to the threaded rods 61. A clamping plate 63 is screwed onto each of the two threaded rods 61, and the clamping plate 63 is slidably connected to the first guide groove. The motor under test 1 and the test module 3 are both located between the two clamping plates 63. By having the first drive motor 62 drive the two clamping plates 63 to move closer together, the output shaft of the motor under test 1 and the test module 3 are pushed into the coupling unit 4, replacing manual installation and improving testing efficiency.

[0038] like Figure 3 As shown, the test bench 2 includes a base 22 with a second guide groove. A lifting mechanism 24 is fixedly installed in the second guide groove. A lifting platform 23 is fixedly connected to the moving end of the lifting mechanism. The coupling unit 4 and the test module 3 are both installed on the moving end of the lifting platform 23. By setting the lifting platform 23 to control the height of the coupling unit 4 and the test module 3, the insertion port of the coupling unit 4 is aligned with the output shaft of the motor 1 under test, which can accommodate various specifications of the motor 1 under test.

[0039] like Figure 3 As shown, the test module 3 includes a sensor unit 31 and a load unit 32. A movable frame 33 is slidably mounted laterally on the moving end of the lifting platform 23. The movable frame 33 is vertically slidably connected to the adjacent top plate 63. The load unit 32 is mounted on the movable frame 33. The sensor unit 31 is mounted on the movable frame 33 between the load unit 32 and the coupling unit 4. A connecting shaft 34 is drivenly mounted on the sensor unit 31. One end of the connecting shaft 34 is drivenly connected to the load unit 32, and the free end of the connecting shaft 34 is engaged with the coupling unit 4. The load unit 32 uses a hysteresis brake to adjust the test load of the motor under test 1. The sensor unit 31 uses a torque sensor and an encoder to detect the torque and speed of the motor under test 1.

[0040] like Figure 3 and Figure 4As shown, the coupling unit 4 includes a rotating disk 41, which is mounted on the test bench 2. The rotating disk 41 has multiple mounting holes 42 circumferentially open and multiple first engagement grooves 43 circumferentially open. Each first engagement groove 43 communicates with a corresponding mounting hole 42. A rotating column 44 is rotatably mounted within each mounting hole 42. A second engagement groove 45 is formed below each first engagement groove 43 on the rotating column 44. A engagement block 46 is vertically slidably mounted within each first engagement groove 43. A first compression spring is fixedly mounted between the engagement block 46 and the rotating disk 41 within the first engagement groove 43. (The last sentence appears to be incomplete and possibly refers to a separate data point.) A top rod 35 is fixedly installed at one end of the element 31 near the rotating disk 41. The locking block 46 is inclined from top to bottom away from the top rod 35 at one end near the top rod 35. The top rod 35 rests against the locking block 46. A second drive motor 47 is fixedly installed on the moving end of the lifting platform 23. The output shaft of the second drive motor 47 is connected to the rotating disk 41 for transmission. A first connecting key 48 or a second connecting key 49 is fixedly connected at one end of the rotating column 44 near the motor 1 being tested. A locking block 441 is fixedly connected at one end of the rotating column 44 near the second locking groove 45. A locking groove is opened at the free end of the connecting shaft 34. The second drive motor 47 drives the rotating disk 41 to rotate, so that different rotating columns 44 are aligned with the output shaft of the motor under test 1. The first connecting key 48 and the second connecting key 49 can be designed with different sizes to suit various specifications of the motor under test 1. By setting the locking block 46 and the push rod 35, when the rotating column 44 is in use, the locking block 46 disengages from the second locking groove 45, and the rotating column 44 can rotate freely. When the rotating column 44 is not in use, the locking block 46 is inserted into the second locking groove 45, and the rotating column 44 cannot rotate, ensuring that the position of the rotating column 44 is fixed when the connecting shaft 34 is inserted, and there will be no misalignment.

[0041] In this embodiment, the second drive motor 47 is connected to the rotating disk 41 via a belt and a pulley.

[0042] like Figure 5 As shown, the second connecting key 49 includes a fixing block 491. A third engaging groove is provided on the inner side of the fixing block 491. A T-shaped block 492 is vertically slidably mounted on the fixing block 491 within the third engaging groove. A second compression spring is fixedly connected between the T-shaped block 492 and the fixing block 491 through the third engaging groove. When the connecting key cannot be directly inserted laterally into the keyway on the output shaft, the second connecting key 49 is used for installation, allowing the coupling unit 4 to adapt to various specifications of the tested motor 1.

[0043] In this embodiment, when in use, the output shaft of the unpowered motor under test 1 can be rotated so that the keyways of the output shaft all face upwards. The motor under test 1 is placed between the test platform and the V-shaped plate 52, with the output shaft facing the coupling unit 4. The motor under test 1 is then connected to the wires. Depending on the model of the motor under test 1, the height of the coupling unit 4 and the test module 3 is adjusted using the lifting platform 23. The second drive motor 47 drives the rotating disk 41 to rotate, so that the corresponding rotating column 44 is aligned with the output shaft of the motor under test 1.

[0044] The test is initiated by the processor. The processor issues a command, the cylinder 51 starts, the cylinder 51 drives the V-shaped plate 52 to move downward, the rotating roller 53 contacts the motor under test 1 and squeezes the motor under test 1 to the center of the test platform 2; the first drive motor 62 starts, the threaded rod 61 drives the top plates 63 on both sides to move closer to each other, the top plate 63 on one side pushes the motor under test 1, the output shaft of the motor under test 1 pushes back against the rotating column 44, the first connecting key 48 or the second connecting key 49 is engaged in the keyway, the top plate 63 on the other side pushes the moving frame 33, so that the connecting shaft 34 is engaged with the locking block 441. At this time, the push rod 35 lifts the locking block 46, the locking block 46 disengages from the second locking groove 45, and the rotating column 44 can rotate freely;

[0045] Start the motor under test 1 and the hysteresis brake to begin the test. The load of the hysteresis brake can be adjusted to obtain multiple sets of test data.

[0046] After the test is completed, the first drive motor 62 rotates in the opposite direction, causing the clamping plate to reset, the cylinder 51 retracts, causing the V-shaped plate 52 to reset, and the operator pulls out the tested motor 1, so that the next test can be performed.

[0047] The above provides a detailed description of a servo motor performance testing platform provided by the present invention. The specific embodiments described are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A servo motor performance test platform, characterized in that: The test setup includes a processor and a test bench (2) for placing the motor under test (1). A mounting bracket (21) is fixedly connected to the test bench (2). A test module (3) for detecting the speed and torque of the motor under test (1) is installed on the test bench (2). A coupling unit (4) is installed on the test bench (2). The output shaft of the motor under test (1) is connected to the test module (3) via the coupling unit (4). A vertical clamping mechanism (5) is installed on the mounting bracket (21). A horizontal clamping mechanism (6) is installed on the test bench (2). The vertical clamping mechanism (5) is used to clamp the motor under test (1), and the horizontal clamping mechanism (6) is used to clamp the motor under test (1). The output shaft of the machine (1) is inserted into the coupling unit (4). The test module (3), the motor under test (1), the vertical clamping mechanism (5), and the horizontal clamping mechanism (6) are all connected to the processor signal. The coupling unit (4) includes a rotating disk (41). The rotating disk (41) is rotatably mounted on the test bench (2). The rotating disk (41) has multiple mounting holes (42) and multiple first engagement grooves (43) circumferentially opened. The first engagement grooves (43) are connected to the corresponding mounting holes (42). A rotating column (44) is rotatably installed in the mounting hole (42). The rotating column (44) has a second engagement groove below the first engagement groove (43). 45), a locking block (46) is vertically slidably installed in the first locking groove (43), and a first compression spring is fixedly installed between the locking block (46) and the rotating disk (41) in the first locking groove (43). The test module (3) includes a sensor unit (31), and a top rod (35) is fixedly installed at one end of the sensor unit (31) near the rotating disk (41). The end of the locking block (46) near the top rod (35) is inclined from top to bottom away from the top rod (35), and the top rod (35) abuts against the locking block (46). The test table (2) includes a base (22), and a second guide groove is provided on the base (22). The seat (22) is fixedly installed with a lifting mechanism (24) in the second guide groove. The moving end of the lifting mechanism (24) is driven to install a lifting platform (23). The moving end of the lifting platform (23) is fixedly installed with a second drive motor (47). The output shaft of the second drive motor (47) is driven to drive the rotating disk (41). The end of the rotating column (44) near the motor (1) being tested is fixedly connected with a connecting key. The end of the rotating column (44) near the second engagement groove (45) is fixedly connected with a locking block (441). The sensor unit (31) is driven to install a connecting shaft (34). The free end of the connecting shaft (34) is provided with a locking groove.

2. The servo motor performance test platform of claim 1, wherein: The vertical clamping mechanism (5) includes a cylinder (51), which is fixedly mounted on a fixed frame (21). A V-shaped plate (52) is fixedly mounted on the moving end of the cylinder (51) above the motor (1) being tested.

3. The servo motor performance test platform of claim 2, wherein: The V-shaped plate (52) has mounting grooves on both sides, and the test bench (2) has a rotating roller (53) rotatably mounted in the mounting groove.

4. The servo motor performance test platform of claim 1, wherein: The transverse clamping mechanism (6) includes two threaded rods (61) and a first drive motor (62). A first guide groove is provided on the test bench (2). The two threaded rods (61) are coaxially connected and rotatably installed in the first guide groove. The threads on the two threaded rods (61) have opposite directions. The first drive motor (62) is fixedly installed on the test bench (2). The output shaft of the first drive motor (62) is connected to the threaded rods (61) in a transmission connection. A clamping plate (63) is screwed onto each of the two threaded rods (61). The clamping plate (63) is slidably connected to the first guide groove. The motor under test (1) and the test module (3) are both located between the two clamping plates (63).

5. The servo motor performance testing platform according to claim 4, characterized in that: Both the coupling unit (4) and the test module (3) are installed on the moving end of the lifting platform (23).

6. The servo motor performance testing platform according to claim 5, characterized in that: The test module (3) also includes a load unit (32). A movable frame (33) is slidably mounted on the movable end of the lifting platform (23). The movable frame (33) is vertically slidably connected to the corresponding top plate (63). The load unit (32) is mounted on the movable frame (33). The sensor unit (31) is mounted on the movable frame (33) between the load unit (32) and the coupling unit (4). One end of the connecting shaft (34) is connected to the load unit (32) in a transmission manner. The free end of the connecting shaft (34) is engaged with the coupling unit (4).

7. A servo motor performance testing platform according to claim 6, characterized in that: The connecting key is either a first connecting key (48) or a second connecting key (49). The second connecting key (49) includes a fixing block (491). A third engaging groove is provided on the inner side of the fixing block (491). A T-shaped block (492) is vertically slidably installed in the third engaging groove of the fixing block (491). A second compression spring is fixedly connected between the T-shaped block (492) and the fixing block (491) in the third engaging groove.

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