Automatic testing equipment for performance of ultrasonic motor

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to ultrasonic motor performance automatic testing equipment which comprises a case, a measuring system, an operating system, a control system and a driving system, wherein the measuring system, the operating system, the control system and the driving system are arranged in the case; the measuring system comprises a magnetic powder brake and a torque sensor, the operating system comprises an instrument fixing metal plate, a torque adjusting instrument and a torque rotating speed displayer are installed on the instrument fixing metal plate, and the control system comprises a PCB, a core control chip, a power guide rail, a direct-current power source and a terminal strip. The driving system comprises a driver, a driver box, an upper terminal integration block and a lower terminal integration block. The equipment can automatically measure the rotating speed of the ultrasonic motor under the corresponding torque load, can set the pulse, the positive and negative rotation, the duty ratio and the cycle index of the ultrasonic motor to carry out a special motor reliability test, and can be compatible with different types of ultrasonic motors.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and particularly relates to an automated testing device for the performance of ultrasonic motors. Background Art

[0002] In modern industry and high-tech equipment, ultrasonic motors have become one of the most commonly used drive motors in many precision instruments and advanced devices due to their advantages such as high torque density, fast response, low noise, and no electromagnetic interference. Ultrasonic motors are widely used in fields such as automation equipment, robotics, aerospace, precision optical instruments, optical focusing systems, medical devices, and magnetic resonance imaging (MRI)-guided interventional therapy robots.

[0003] Especially in MRI-guided interventional therapy robots, ultrasonic motors, with their non-magnetic characteristics, avoid interference with magnetic resonance imaging, ensuring the accuracy and safety of the treatment process. However, with the popularization of ultrasonic motors in various high-precision applications, higher requirements are put forward for the stability and reliability of their performance. Existing ultrasonic motor testing equipment is often designed for specific application scenarios, lacking sufficient universality and unable to fully meet the testing requirements under different models and different application needs. This not only limits the application of ultrasonic motors in a wider range of fields but also increases the costs and complexities in the R & D and maintenance processes.

[0004] To address the above challenges, there is an urgent need to design an automated testing device for the performance of ultrasonic motors with high universality. This device should be able to comprehensively measure the basic performance parameters of ultrasonic motors, such as torque and speed, and support setting corresponding control parameters for testing according to actual usage requirements and expected service life. In addition, the device needs to have an automated control function to meet the requirements of long-term periodic reliability testing and the ability to be compatible with various models of ultrasonic motors, thereby improving testing efficiency, reducing operation difficulty, and ensuring the accuracy and consistency of test results. Summary of the Invention

[0005] The purpose of the present invention is to provide an automated testing device for the performance of ultrasonic motors with strong universality and comprehensive functions to solve the above problems.

[0006] The purpose of the present invention is achieved through the following technical solutions:

[0007] An automated testing device for the performance of ultrasonic motors, comprising:

[0008] A chassis and a measurement system, an operating system, a control system, and a drive system provided in the chassis;

[0009] The measurement system includes a magnetic powder brake and a torque sensor. The magnetic powder brake is installed on the bottom plate inside the chassis. The magnetic powder brake is connected to the torque sensor, and the torque sensor is cooperatively installed with the ultrasonic motor to be tested mounted on the chassis. The magnetic powder brake is connected to an operating system, the operating system is connected to a control system, and the ultrasonic motor to be tested is connected to a drive system.

[0010] Preferably, the operating system includes an instrument fixing sheet metal, on which a torque adjuster and a torque and speed display are installed.

[0011] Preferably, the control system includes a PCB circuit board, a core control chip, a power rail, a DC power supply, and a terminal block. The DC power supply and the terminal block are installed on the power rail. The DC power supply is connected to the PCB circuit board through a circuit, the PCB circuit board is circuit-connected to the core control chip, and the core control chip is circuit-connected to the ultrasonic motor to be tested and the drive system.

[0012] Preferably, a communication network port is fixedly installed on the chassis. The communication network port is connected to the PCB circuit board and a personal computer through a network cable for signal communication.

[0013] Preferably, the control system further includes a power socket. The DC power supply is connected to the power socket through a circuit, and the power socket is connected to an external power supply.

[0014] Preferably, the drive system includes a driver, a driver box, an upper terminal integration block, and a lower terminal integration block. The upper terminal integration block is fixedly installed on the driver box, the lower terminal integration block is fixedly installed under the upper terminal integration block, and the driver is installed on the upper terminal integration block.

[0015] Preferably, the torque sensor is cooperatively installed with the ultrasonic motor to be tested through a second cross-slider coupling.

[0016] Preferably, the magnetic powder brake is fixedly connected to the torque sensor through a first cross-slider coupling.

[0017] Preferably, the device further includes a heat dissipation system, which includes a fan and heat dissipation holes. The fan is installed on the box body of the chassis, and the heat dissipation holes are opened on the side wall of the chassis.

[0018] By implementing the above technical solutions, the present invention has the following technical solutions:

[0019] The device of the present invention can automatically measure the speed of the ultrasonic motor under a corresponding torque load, can set the pulses, forward and reverse rotation, duty cycle, and cycle times of the ultrasonic motor for special motor reliability tests, and can be compatible with different models of ultrasonic motors. Description of the Drawings

[0020] The accompanying drawings, as part of the present invention, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not unduly limit the present invention. Obviously, the accompanying drawings in the following description are only some embodiments, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic three-dimensional structure diagram of the test device shown in an embodiment of the present invention;

[0022] Figure 2 It is a schematic internal structure diagram of the test device shown in an embodiment of the present invention;

[0023] Figure 3 It is a top view of the internal structure of the test device shown in an embodiment of the present invention;

[0024] Figure 4 It is a partial cross-sectional view of the internal structure of the test device shown in an embodiment of the present invention;

[0025] Figure 5 It is a side view of the test device shown in an embodiment of the present invention;

[0026] Figure 6 It is a rear view of the test device shown in an embodiment of the present invention. Detailed Embodiments

[0027] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention, but do not limit the scope of the present invention.

[0028] The ultrasonic motor performance automatic test device provided in this embodiment is used to test the performance of the ultrasonic motor. Refer to Figure 1 , this test device includes a measurement system 200, an operating system 300, a control system 400, a drive system 500, and a heat dissipation system 600, all integrated in a chassis 100. This can not only reduce the volume of the device, but also reduce incorrect operations and technical thresholds during the test, making it more convenient and reliable.

[0029] Refer to Figure 1 and Figure 2 , the chassis 100 of this test device includes a chassis body 110, a chassis bottom plate 130 is fixedly installed inside the chassis body 110, a chassis front panel 120 is fixedly installed in front of the chassis body 110, a chassis upper cover plate 140 is fixedly installed on the top of the chassis body 110, and a driver box 150 is fixedly installed on the right side of the chassis body 110.

[0030] See Figure 2 and 3 As shown in FIGS. Figure 2 and 3 , the measurement system 200 includes a magnetic powder brake 220 which is fixedly mounted on the chassis bottom plate 130. The magnetic powder brake 220 is fixedly connected to a torque sensor 210 through a first cross-slider coupling 230. The torque sensor 210 is fixedly mounted on a sensor fixing block 250, and the sensor fixing block 250 is fitted and mounted on the chassis bottom plate 130. The torque sensor 210 is fitted and mounted with a ultrasonic motor 270 to be tested through a second cross-slider coupling 240. The ultrasonic motor 270 is fixedly mounted on a motor support block 260. The lower end of the motor support block 260 is fixedly mounted on the chassis bottom plate 130, and the front end is fixedly mounted on the chassis front panel 120.

[0031] See Figure 1 and Figure 2 As shown in FIGS. Figure 1 and Figure 2 , the operating system 300 includes an instrument fixing sheet metal 330 which is fixedly mounted on the chassis bottom plate 130. A torque adjuster 310 and a torque and speed display 320 are fitted and mounted on the instrument fixing sheet metal 330 through shaft hole mating. The torque adjuster 310 and the torque and speed display 320 are fitted and mounted on the chassis front panel 120 through shaft hole mating.

[0032] See Figure 3 and Figure 4 As shown in FIGS. Figure 3 and Figure 4 , the control system 400 includes a power supply guide rail 430 on which a DC power supply 440 and a terminal block 450 are fixedly mounted. A three-pin power socket 460 is fixedly mounted on the chassis body 110. A PCB circuit board 410 is fixedly mounted on the chassis bottom plate 130, and a core control chip 420 is fitted and mounted on the PCB circuit board 410.

[0033] The DC power supply 440 is electrically connected to the three-pin power socket 460, and the three-pin power socket 460 is connected to an external power supply. The terminal block 450 is electrically connected to the DC power supply 440 through a circuit. The DC power supply 440 is electrically connected to the PCB circuit board 410 through a circuit, and the PCB circuit board 410 is electrically connected to the core control chip 420. The core control chip 420 is electrically connected to the ultrasonic motor 270 and a driver 510 of the drive system. The driver 510 is electrically connected to the ultrasonic motor 270.

[0034] The drive system 500 includes an upper terminal integration block 520 which is fixedly mounted on a driver box 150. A lower terminal integration block 530 is fixedly mounted below the upper terminal integration block 520. A driver 510 is fitted and mounted on the upper terminal integration block 520 through shaft hole mating.

[0035] The circuit connection of the driver 510 is integrated into a coupling connector through the upper terminal integration block 520 and the lower terminal integration block 530, and the driver 510 can be connected and replaced by direct plugging and unplugging.

[0036] The magnetic powder brake 220 is controlled by the torque regulator 310 through circuit connection, and the torque regulator 310 is circuit-connected to the terminal block 450; the torque sensor 210 is circuit-connected to the torque and speed display 320, and the torque and speed display 320 is circuit-connected to the terminal block 450; the terminal block 450 is circuit-connected to the DC power supply 440, and the DC power supply 440 is powered by an external power supply; the ultrasonic motor 270 is circuit-connected to the PCB circuit board 410 and the driver 510.

[0037] The ultrasonic motor 270 drives the first cross slider coupling 230 and the second cross slider coupling 240 to rotate through rotational connection, and the magnetic powder brake 220 provides the torque load for the rotation of the ultrasonic motor 270, and the torque sensor 210 collects the torque and speed signals of the magnetic powder brake 220. The sensor fixing block 250 can move and be fixed on the chute of the chassis bottom plate 130.

[0038] A communication network port 340 is fixedly installed on the front panel 120 of the chassis, and the communication network port 340 is connected to the PCB circuit board 410 and the personal computer 350 through a network cable for signal communication.

[0039] The PCB circuit board 410 receives the pulse signal, forward and reverse signal, duty cycle signal, and cycle number signal input by the communication network port 340. After being calculated and processed by the core control chip 420, it controls the driver 510 to drive the ultrasonic motor 270 to rotate forward and backward. The ultrasonic motor 270 transmits the pulse signal back to the PCB circuit board 410, and after being processed by the core control chip 420, it is transmitted to the personal computer 350 for display.

[0040] By adjusting the torque regulator 310, the torque load of the magnetic powder brake 220 can be adjusted. The torque and speed signals measured by the torque sensor 210 are processed and displayed by the torque and speed display 320. The pulse signal, forward and reverse signal, duty cycle signal, and cycle number signal set by operating the personal computer 350 are transmitted to the PCB circuit board 410 through the communication network port 340.

[0041] See Figure 2 、 5 As shown in FIGS. 5 and 6, the cooling system 600 includes a fan 610 and a fan mesh 620. The fan 610 and the fan mesh 620 are fixedly installed on the chassis body 110. The fan 610 is circuit-connected to the terminal block 450, and the left cooling holes 630 and the right cooling holes 640 are provided on the left and right sides of the chassis body 110.

[0042] The rotation of the fan 610 sucks the external air of the chassis 100 through the left heat dissipation holes 630 and the right heat dissipation holes 640, and blows the internal air of the chassis 100 through the fan screen 620 to perform air cooling on the internal space of the chassis 100.

[0043] Usage steps:

[0044] 1. Fix and install the adapter on the rotating shaft of the ultrasonic motor 270 to be tested.

[0045] 2. Install the adapter on the second cross slider coupling 240 through the special-shaped shaft hole fit.

[0046] 3. Fix and install the ultrasonic motor 270 to be tested on the motor support block 260 with screws.

[0047] 4. Directly insert the driver 510 corresponding to the ultrasonic motor 270 to be tested onto the drive system 500.

[0048] 5. Connect the personal computer 350 and the communication network port 340 for communication with a network cable.

[0049] 6. Connect the three-pin power socket 460 to the 220v power supply and turn on the power switch of the three-pin power socket 460.

[0050] 7. Adjust the torque adjuster 310 to the rated torque load value.

[0051] 8. Operate the control terminal (putty / power shell) of the personal computer 350 to input relevant test parameters (forward and reverse rotation, number of pulses, delay, number of cycles) to drive the motor for automated testing.

[0052] 9. Obtain relevant test data (torque, speed, power, number of cycles, number of drive pulses, actual number of pulses, etc.) through the test data returned by the personal computer 350 and the real-time values on the torque and speed display 320.

[0053] Compared with the prior art, the test equipment provided in this embodiment has at least the following advantages:

[0054] 1. It can perform automated testing on ultrasonic motors.

[0055] 2. It can measure the speed of the ultrasonic motor under the corresponding torque load.

[0056] 3. It can set the pulses, forward and reverse rotation, duty cycle, and number of cycles of the ultrasonic motor for special motor reliability testing.

[0057] 4. It can be moved and fixed by adjusting the sensor fixing block 250 on the chute of the chassis bottom plate 130 to be compatible with different models of ultrasonic motors for testing.

[0058] 5. By adopting the first cross-slider coupling 230 and the second cross-slider coupling 240, the influence of internal stress caused by inaccurate assembly on torque testing can be reduced.

[0059] 6. By setting up the driver box 150, the upper terminal integration block 520 and the lower terminal integration block 530, the driver can be directly plugged and unplugged for installation and replacement.

[0060] 7. Integrating the test environment in a box can reduce incorrect operations and technical thresholds during the testing process, making it more convenient and reliable.

[0061] 8. Setting up the heat dissipation system 600 can prevent damage to electronic components caused by excessive temperature inside the box.

Claims

1. An ultrasonic motor performance automatic testing device, characterized in that: include: A chassis and a measuring system, an operating system, a control system and a driving system arranged in the chassis; The measuring system includes a magnetic powder brake and a torque sensor. The magnetic powder brake is installed on a bottom plate in a chassis. The magnetic powder brake is connected to the torque sensor. The torque sensor is installed in cooperation with an ultrasonic motor to be tested installed on the chassis. The magnetic powder brake is connected to an operating system, the operating system is connected to a control system, and the ultrasonic motor to be tested is connected to a drive system.

2. The ultrasonic motor performance automatic testing equipment according to claim 1, characterized in that: The operating system comprises an instrument fixing sheet metal, on which a torque regulator and a torque speed display are mounted.

3. The ultrasonic motor performance automatic testing equipment according to claim 1 is characterized in that: The control system includes a PCB circuit board, a core control chip, a power rail, a DC power supply and a terminal block, wherein the DC power supply and the terminal block are mounted on the power rail, the DC power supply is connected to the PCB circuit board through a circuit, the PCB circuit board circuit is connected to the core control chip, and the core control chip circuit is connected to the ultrasonic motor to be tested and the drive system.

4. The ultrasonic motor performance automatic testing equipment according to claim 3 is characterized in that: A communication network port is fixedly installed on the chassis, and the communication network port is connected to the PCB circuit board and the computer through a network cable for signal communication.

5. The ultrasonic motor performance automatic testing equipment according to claim 3 is characterized in that: The control system also includes a power socket, a DC power source is connected to the power socket through a circuit, and the power socket is connected to an external power source.

6. The ultrasonic motor performance automatic testing equipment according to claim 1, characterized in that: The driving system comprises a driver, a driver box, an upper terminal integration block and a lower terminal integration block. The upper terminal integration block is fixedly mounted on the driver box, a lower terminal integration block is fixedly mounted under the upper terminal integration block, and the driver is mounted on the upper terminal integration block.

7. The ultrasonic motor performance automatic testing equipment according to claim 1, characterized in that: The torque sensor is mounted on the chassis through a sensor fixing block.

8. The ultrasonic motor performance automatic testing equipment according to claim 1, characterized in that: The torque sensor is installed in cooperation with the ultrasonic motor to be tested through a second cross slider coupling.

9. The ultrasonic motor performance automatic testing equipment according to claim 1, characterized in that: The magnetic powder brake is fixedly connected to the torque sensor via a first cross slider coupling.

10. The ultrasonic motor performance automatic testing equipment according to claim 1, characterized in that: The device also includes a heat dissipation system, which includes a fan and heat dissipation holes. The fan is installed on the case body of the case, and the heat dissipation holes are opened on the side wall of the case.

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