Dynamic torque detection device of stepping motor

Abstract

The utility model discloses a dynamic torque detection device of a stepping motor, which comprises a device main body, a motor driver, a clamping seat, a torque tester and a cambered surface clamping block, the motor driver is arranged on one side of the top end of the device main body, and the top end of the device main body on one side of the motor driver is provided with a supporting seat. A second air cylinder is installed in the supporting seat, the clamping seat is arranged above the supporting seat, a stepping motor body is arranged in the clamping seat, an output shaft is installed at the output end of the stepping motor body, and the torque tester is installed on the side wall of the device body. The input end of the torque tester is provided with a detection shaft through a coupler, the outer wall of one end of the detection shaft is fixedly provided with a positioning support, and the cambered surface clamping block is arranged on one side of the positioning support. According to the utility model, the output shaft can be quickly aligned with the detection shaft and can be quickly connected and fixed, the operation is convenient, and the detection work can be smoothly carried out.

Description

Technical Field

[0001] The utility model relates to the technical field of stepping motor detection, in particular to a dynamic torque detection device of a stepping motor. Background Art

[0002] A stepper motor is an electric motor that converts electrical pulse signals into corresponding angular or linear displacements. Each time a pulse signal is input, the rotor rotates an angle or advances one step. The angular or linear displacement it outputs is proportional to the number of input pulses, and the speed is proportional to the pulse frequency. Therefore, a stepper motor is also called a pulse motor. Dynamic torque testing of a stepper motor is performed by measuring the torque output of the motor under different operating conditions to evaluate its performance and stability. A dynamic torque testing device for a stepper motor typically includes a base, a fixing assembly, a stepper motor, a torque tester, a coupling, a motor driver, and a display. These components work together to achieve accurate measurement of the dynamic torque of the stepper motor.

[0003] When testing the dynamic torque of a stepper motor, it is necessary to connect the output shaft of the stepper motor to the detection shaft of the torque tester. However, when testing motors of different sizes, the placement of the stepper motor needs to be repeatedly adjusted, which makes it inconvenient to quickly align the output shaft with the detection shaft, and it is also inconvenient to connect and fix it, resulting in unsmooth testing and affecting testing efficiency. Therefore, improvement is urgently needed. Utility Model Content

[0004] The purpose of the present utility model is to provide a dynamic torque detection device for a stepping motor to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a dynamic torque detection device for a stepper motor, comprising a device body, a motor driver, a clamping seat, a torque tester and an arc-surface clamping block, the motor driver being installed on one side of the top of the device body, a support seat being provided at the top of the device body on the side of the motor driver, and a second cylinder being installed inside the support seat, the clamping seat being provided above the support seat, the clamping seat being fixedly connected to the output end of the second cylinder, a stepper motor body being provided inside the clamping seat, and an output shaft being installed at the output end of the stepper motor body, the torque tester being installed on the side wall of the device body, and a detection shaft being installed at the input end of the torque tester through a coupling, a groove being provided at one end of the detection shaft, and a laser emitter being installed inside the groove, a positioning bracket being fixed on the outer wall of one end of the detection shaft, and the arc-surface clamping block being provided on one side of the positioning bracket.

[0006] Preferably, a first cylinder is installed on the outer walls on both sides of the clamping seat, and the output end of the first cylinder extends to the interior of the clamping seat and is installed with a clamping plate. The first cylinder drives the clamping plate to clamp the stepper motor body at the center position inside the clamping seat.

[0007] Preferably, a rubber pad is adhered to the bottom of the clamping seat below the stepping motor body, and the rubber pad fits tightly with the stepping motor body, thereby increasing the friction between the clamping seat and the stepping motor.

[0008] Preferably, a servo motor is installed inside the device body below the support seat, and a screw rod is installed at the output end of the servo motor, and guide rods are fixed inside the device body on both sides of the screw rod.

[0009] Preferably, a slider is mounted on the outside of the screw rod and the guide rod, the slider is threadedly connected to the screw rod, the slider is slidingly connected to the guide rod, and the slider is fixedly connected to the support seat. The servo motor drives the screw rod to rotate, so that the slider translates along the screw rod and the guide rod and drives the support seat to translate. The support seat drives the stepper motor body to facilitate the connection between the output shaft and the detection shaft.

[0010] Preferably, a threaded hole is provided inside the positioning bracket, and a threaded rod is connected to the internal thread of the threaded hole, and one end of the threaded rod is movably connected to the arc surface clamping block.

[0011] Preferably, a rubber friction sheet is adhered to the inner wall of the arc surface clamping block, which increases the friction force and makes the clamping firm and reliable.

[0012] Preferably, a display screen is installed on the outer wall of one side of the device body, and the measured torque values ​​are observed and counted in real time through the display screen.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] Place the stepper motor body on the clamp seat, and the first cylinder drives the clamp to clamp the stepper motor body in the center position inside the clamp seat. According to the position of the laser beam emitted by the laser emitter, the height of the clamp seat is adjusted by the second cylinder until the laser beam is aligned with the center point of the output shaft. At this time, the output shaft is aligned with the detection axis, and then the servo motor is controlled to drive the lead screw to rotate, so that the slider moves along the lead screw and guide rod and drives the support seat to move. The support seat drives the stepper motor body to connect the output shaft with the detection axis. Then, the threaded rod is rotated to make the arc clamp move horizontally, and the arc clamp clamps the output shaft. The setting of the rubber friction plate increases the friction force, making the clamping firm and reliable, so that the output shaft can be quickly aligned with the detection axis and quickly connected and fixed. It is easy to operate and facilitates the smooth progress of the detection work. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1This is a schematic diagram of the main cross-sectional structure of the utility model;

[0016] Figure 2 This is an enlarged side sectional structural diagram of the clamping seat of the present invention;

[0017] Figure 3 For the utility model Figure 1 A in the middle is an enlarged structural diagram;

[0018] Figure 4 This is a schematic diagram of an enlarged side cross-section of the detection shaft of the present invention;

[0019] Figure 5 It is a schematic diagram of a partially enlarged top view of the device body of the present invention.

[0020] In the figure: 1. Device body; 2. Motor driver; 3. Support seat; 4. Clamp seat; 5. Stepper motor body; 6. Output shaft; 7. Coupling; 8. Torque tester; 9. Display screen; 10. First cylinder; 11. Clamp plate; 12. Rubber pad; 13. Second cylinder; 14. Detection shaft; 15. Groove; 16. Laser emitter; 17. Positioning bracket; 18. Threaded hole; 19. Threaded rod; 20. Arc clamp block; 21. Rubber friction plate; 22. Servo motor; 23. Screw rod; 24. Guide rod; 25. Slider. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-5The utility model provides an embodiment: a dynamic torque detection device for a stepping motor, comprising a device body 1, a motor driver 2, a clamping seat 4, a torque tester 8 and a curved clamping block 20, wherein the motor driver 2 is mounted on one side of the top of the device body 1, a support seat 3 is provided on the top of the device body 1 on the side of the motor driver 2, and a second cylinder 13 is installed inside the support seat 3, the clamping seat 4 is arranged above the support seat 3, the clamping seat 4 is fixedly connected to the output end of the second cylinder 13, a stepping motor body 5 is arranged inside the clamping seat 4, and an output shaft 6 is installed at the output end of the stepping motor body 5;

[0024] Specifically, the stepper motor body 5 is placed on the clamping seat 4, and the first cylinder 10 drives the clamping plate 11 to clamp and fix the stepper motor body 5 at the center position inside the clamping seat 4. Then, according to the position of the laser beam emitted by the laser emitter 16 inside the groove 15, the height of the clamping seat 4 is adjusted by the second cylinder 13 until the laser beam is aligned with the center point of the output shaft 6. At this time, the output shaft 6 is aligned with the detection shaft 14, and then the servo motor 22 is controlled to drive the screw rod 23 to rotate, so that the slider 25 is translated along the screw rod 23 and the guide rod 24 and drives the support seat 3 to translate. The support seat 3 drives the stepper motor body 5 to connect the output shaft 6 with the detection shaft 14. Then, the threaded rod 19 is rotated to make the arc clamping block 20 translate, and the arc clamping block 20 clamps the output shaft 6. The setting of the rubber friction plate 21 increases the friction force, making the clamping firm and reliable, thereby facilitating the rapid alignment of the output shaft 6 with the detection shaft 14 and rapid connection and fixation. The operation is convenient, and the detection work is carried out smoothly.

[0025] The torque tester 8 is mounted on the side wall of the device body 1, and a detection shaft 14 is mounted on the input end of the torque tester 8 through a coupling 7. A groove 15 is provided at one end of the detection shaft 14, and a laser emitter 16 is mounted inside the groove 15. A positioning bracket 17 is fixed to the outer wall of one end of the detection shaft 14, and a curved clamp 20 is provided on one side of the positioning bracket 17.

[0026] Specifically, during the test, the motor driver 2 provides power to the stepper motor body 5 and gives the stepper motor body 5 different voltages, currents and speeds, thereby facilitating the torque tester 8 to detect the torque values ​​of the stepper motor body 5 at different speeds. During the test process, the measured torque values ​​can be observed and counted in real time through the display screen 9;

[0027] After the detection is completed, the threaded rod 19 is rotated in the opposite direction to separate the arc-surface clamping block 20 from the output shaft 6, and then the servo motor 22 is controlled to drive the screw rod 23 to rotate in the opposite direction, so that the slider 25 drives the support base 3 and drives the stepper motor body 5 to translate, so that the output shaft 6 is separated from the detection shaft 14, and then the stepper motor body 5 is removed from the clamping base 4;

[0028] A first cylinder 10 is installed on the outer walls of both sides of the clamping base 4, and the output end of the first cylinder 10 extends to the inside of the clamping base 4 and is installed with a clamping plate 11;

[0029] A rubber pad 12 is adhered to the bottom of the clamping seat 4 below the stepper motor body 5, and the rubber pad 12 fits tightly against the stepper motor body 5;

[0030] A servo motor 22 is installed inside the device body 1 below the support base 3, and a screw rod 23 is installed at the output end of the servo motor 22, and guide rods 24 are fixed inside the device body 1 on both sides of the screw rod 23;

[0031] The outer portion of the screw rod 23 and the guide rod 24 is provided with a slider 25, which is threadedly connected to the screw rod 23, slidably connected to the guide rod 24, and fixedly connected to the support base 3;

[0032] A threaded hole 18 is provided inside the positioning bracket 17, and a threaded rod 19 is threadedly connected to the inside of the threaded hole 18, and one end of the threaded rod 19 is movably connected to the arc surface clamping block 20;

[0033] A rubber friction sheet 21 is adhered to the inner wall of the arc-surface clamping block 20;

[0034] A display screen 9 is mounted on an outer wall of one side of the device body 1 .

[0035] When the embodiment of the present application is in use: first, the stepper motor body 5 is placed on the clamping seat 4, and the first cylinder 10 drives the clamping plate 11 to clamp the stepper motor body 5 and fix it in the center position inside the clamping seat 4. Then, according to the position of the laser beam emitted by the laser emitter 16 inside the groove 15, the height of the clamping seat 4 is adjusted by the second cylinder 13 until the laser beam is aligned with the center point of the output shaft 6. At this time, the output shaft 6 is aligned with the detection shaft 14, and then the servo motor 22 is controlled to drive the screw rod 23 to rotate, so that the slider 25 is translated along the screw rod 23 and the guide rod 24 and drives the support seat 3 to translate. The support seat 3 drives the stepper motor body 5 to connect the output shaft 6 with the detection shaft 14. Then, the threaded rod 19 is rotated to make the arc clamp 20 translate, and the arc clamp 20 clamps the output shaft 6. The setting of the rubber friction plate 21 increases the friction force. It is used to make the clamping firm and reliable, so that the output shaft 6 can be quickly aligned with the detection shaft 14 and quickly connected and fixed. It is easy to operate and facilitates the smooth progress of the detection work. Then, during the detection, the motor driver 2 provides power to the stepper motor body 5 and gives the stepper motor body 5 different voltages, currents and speeds, so that the torque tester 8 can detect the torque value of the stepper motor body 5 at different speeds. During the detection process, the measured torque value can be observed and counted in real time through the display screen 9. Finally, after the detection is completed, the threaded rod 19 is rotated in the opposite direction to separate the arc clamp 20 from the output shaft 6, and then the servo motor 22 is controlled to drive the screw rod 23 to rotate in the opposite direction, so that the slider 25 drives the support seat 3 and drives the stepper motor body 5 to translate, so that the output shaft 6 is separated from the detection shaft 14, and then the stepper motor body 5 is removed from the clamp seat 4.

[0036] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

Claims

1. A dynamic torque detection device for a stepping motor, characterized in that: The invention comprises a device body (1), a motor driver (2), a clamping seat (4), a torque tester (8) and a curved clamping block (20), wherein the motor driver (2) is mounted on one side of the top of the device body (1), a support seat (3) is provided on the top of the device body (1) on the side of the motor driver (2), and a second cylinder (13) is installed inside the support seat (3), the clamping seat (4) is arranged above the support seat (3), the clamping seat (4) is fixedly connected to the output end of the second cylinder (13), and a stepping motor body ( 5), and the output end of the stepper motor body (5) is installed with an output shaft (6), the torque tester (8) is installed on the side wall of the device body (1), and the input end of the torque tester (8) is installed with a detection shaft (14) through a coupling (7), one end of the detection shaft (14) is provided with a groove (15), and a laser emitter (16) is installed inside the groove (15), a positioning bracket (17) is fixed on the outer wall of one end of the detection shaft (14), and the arc surface clamping block (20) is provided on one side of the positioning bracket (17).

2. The dynamic torque detection device for a stepping motor according to claim 1, characterized in that: A first cylinder (10) is installed on the outer walls of both sides of the clamping seat (4), and the output end of the first cylinder (10) extends to the interior of the clamping seat (4) and is installed with a clamping plate (11).

3. The dynamic torque detection device for a stepping motor according to claim 1, characterized in that: A rubber pad (12) is adhered to the bottom of the clamping seat (4) below the stepping motor body (5), and the rubber pad (12) is tightly fitted to the stepping motor body (5).

4. The dynamic torque detection device for a stepping motor according to claim 1, characterized in that: A servo motor (22) is installed inside the device body (1) below the support seat (3), and a screw rod (23) is installed at the output end of the servo motor (22), and guide rods (24) are fixed inside the device body (1) on both sides of the screw rod (23).

5. The dynamic torque detection device for a stepping motor according to claim 4, characterized in that: A slider (25) is sleeved on the outside of the screw rod (23) and the guide rod (24); the slider (25) is threadedly connected to the screw rod (23); the slider (25) is slidably connected to the guide rod (24); and the slider (25) is fixedly connected to the support seat (3).

6. The dynamic torque detection device for a stepping motor according to claim 1, characterized in that: A threaded hole (18) is provided inside the positioning bracket (17), and a threaded rod (19) is connected to the inner thread of the threaded hole (18), and one end of the threaded rod (19) is movably connected to the arc surface clamping block (20).

7. The dynamic torque detection device for a stepping motor according to claim 1, characterized in that: A rubber friction sheet (21) is adhered to the inner wall of the arc surface clamping block (20).

8. The dynamic torque detection device for a stepping motor according to claim 1, characterized in that: A display screen (9) is mounted on an outer wall of one side of the device body (1).

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