An ultrasonic motor testing device

Abstract

The utility model discloses a kind of ultrasonic motor testing devices, including host computer, rack and the testing system being arranged in rack;Testing system includes two groups of test platform, and test platform includes base, pre-press mechanism, three-axis motion mechanism, test support, stator mounting seat, rotor mounting seat, hysteresis brake and temperature sensor;The utility model is by being arranged pre-press mechanism, and using push rod type linear stepper motor to realize stepless loading pre-pressure function, and for the rotor and stator of ultrasonic motor respectively setting test support and three-axis motion mechanism, can satisfy the performance test of ultrasonic motor decomposition under different pre-pressure load conditions.In addition, the utility model is by host computer connection two groups of test platform, two groups of test platform can carry out test respectively, improve test efficiency, and realize full-process automation control, and record each test data, effectively improve the detection efficiency of ultrasonic motor.

Description

Technical Field

[0001] This utility model relates to the field of ultrasonic motor technology, and more specifically, to an ultrasonic motor testing device. Background Technology

[0002] Motor testing is essential to ensure the normal operation and performance of motors. Comprehensive and accurate testing reveals key indicators such as the motor's operating status, load capacity, output power, and efficiency, providing a basis for equipment maintenance and optimization. Traveling wave piezoelectric motors have a unique structure and driving principle, with the stator being a crucial component that fundamentally determines the motor's output performance. Previously, stator performance testing required motor assembly and debugging. The stability of the motor structure significantly impacted the test results, making it difficult to reproduce the results precisely. Furthermore, it was impossible to steplessly adjust preload and stiffness while simultaneously detecting output force. In addition, performance test results were affected by the motor system, making it difficult to pinpoint factors such as the ceramic, adhesive, metallic elastomer, and friction materials of the resonator body. Therefore, it is necessary to improve existing ultrasonic motor testing equipment. Utility Model Content

[0003] This utility model provides an ultrasonic motor testing device to solve the problems mentioned in the background art. To achieve the above objective, this utility model provides the following technical solution: an ultrasonic motor testing device, including a host computer, a frame, and a testing system disposed within the frame; the testing system includes two sets of testing platforms, each testing platform including a base, a pre-compression mechanism, a three-axis motion mechanism, a testing bracket, a stator mounting base, a rotor mounting base, a hysteresis brake, and a temperature sensor; The pre-compression mechanism and the test bracket are respectively mounted on the base. The three-axis motion mechanism is mounted on the pre-compression mechanism, the stator mounting base is mounted on the three-axis motion mechanism, and the rotor mounting base is mounted on the test bracket. The pre-compression mechanism is used to drive the three-axis motion mechanism to move horizontally, and the three-axis motion mechanism is used to drive the stator mounting base to move. The hysteresis brake is mounted on the test bracket and connected to the rotor mounting base via a coupling. The temperature sensor is located on the top of the test bracket, with its detection end facing downwards. The hysteresis brake and the temperature sensor are respectively electrically connected to the host computer.

[0004] Preferably, the pre-compression mechanism includes a linear guide rail, several sliders, a sliding plate, and a drive unit; the linear guide rail is fixedly mounted on the base, the sliders are slidably mounted on the linear guide rail, the sliding plate is connected to the sliders, and the three-axis motion mechanism is mounted on the sliding plate; a connecting plate is provided on the side of the sliding plate, and the drive unit is mounted on the base and connected to the connecting plate.

[0005] Preferably, the driving unit is a push rod type linear stepper motor, and the output end of the push rod type linear stepper motor is connected to the connecting plate; the push rod type linear stepper motor is provided with a stepper motor cover.

[0006] Preferably, the base has a sensor bracket on its side, and the sensor bracket has an inner groove. A first photoelectric sensor and a second photoelectric sensor are mounted on the inner groove. The mounting positions of the first photoelectric sensor and the second photoelectric sensor on the inner groove can be changed in the horizontal direction. The first photoelectric sensor and the second photoelectric sensor are electrically connected to the host computer. The slide plate has a shielding plate, which is configured to cooperate with the first photoelectric sensor and the second photoelectric sensor.

[0007] Preferably, the three-axis motion mechanism includes an X-axis motion component, a Y-axis motion component, and a Z-axis motion component; the X-axis motion component is on the slide plate, the Y-axis motion component is disposed on the X-axis motion component, and the Z-axis motion component is mounted on the Y-axis motion component; the X-axis motion component drives the Y-axis motion component to move along the X-axis direction, and the Y-axis motion component drives the Z-axis motion component to move along the Y-axis direction; the stator mounting base is connected to the Z-axis motion component, and the Z-axis motion component drives the stator mounting base to move along the Z-axis direction.

[0008] Preferably, the X-axis motion assembly includes a first fixed seat, a first sliding seat, a first push plate, a first cylinder, a first locking plate, and a first locking bolt; the first fixed seat is connected to the X-axis motion assembly, and the first sliding seat is slidably disposed on the first fixed seat; the first push plate is disposed on the side of the first sliding seat; the first cylinder is mounted on the side of the first fixed seat, and its piston rod is connected to the first push plate; the first locking plate is provided with a first sliding groove, and the first locking plate is connected to the first fixed seat; the first locking bolt passes through the first sliding groove and is threadedly connected to the first sliding seat.

[0009] Preferably, the Y-axis motion assembly includes a second fixed seat, a second sliding seat, a second push plate, a second cylinder, a second locking plate, and a second locking bolt; the second fixed seat is connected to the first sliding seat, and the second sliding seat is slidably disposed on the second fixed seat; the second push plate is disposed on the side of the second sliding seat; the second cylinder is installed on the side of the second fixed seat, and its piston rod is connected to the second push plate; the second locking plate is provided with a second sliding groove, and the second locking plate is connected to the second fixed seat; the second locking bolt passes through the second sliding groove and is threadedly connected to the second sliding seat.

[0010] Preferably, the Z-axis motion assembly includes a vertical support, a third fixed seat, a third sliding seat, a third cylinder, a third locking plate, and a third locking bolt; the vertical support is connected to the second sliding seat, the third fixed seat is mounted on the vertical support, the third sliding seat is slidably disposed on the third fixed seat, the third cylinder is mounted on the third sliding seat, and its piston rod is connected to the third fixed seat; the stator mounting seat is disposed on the third sliding seat; the third locking plate is provided with a third sliding groove, and the third locking plate is connected to the third fixed seat; the third locking bolt passes through the third sliding groove and is threadedly connected to the third sliding seat.

[0011] Preferably, the test bracket includes a column, a horizontal plate, a horizontal beam, and a vertical plate; the bottom of the column is connected to the base, and the top is connected to the horizontal plate; the horizontal beam is connected to the column, and the vertical plate is installed at the end of the horizontal beam; the hysteresis brake is disposed on the column, the rotor mounting seat is disposed on the vertical plate, the rotor mounting seat is provided with a rotating shaft, one end of the rotating shaft is provided with a spring floating mechanism, the spring floating mechanism is used to connect the rotor of the ultrasonic motor; the other end of the rotating shaft is connected to the hysteresis brake through a coupling; the temperature sensor is disposed on the horizontal plate, and its detection end is arranged facing the area between the rotor mounting seat and the stator mounting seat.

[0012] Preferably, the two sets of test platforms are arranged vertically.

[0013] Compared with existing technologies, the advantages of this invention are as follows: This invention has a reasonable design and simple structure. Targeting existing traveling wave motor performance testing scenarios, it achieves stepless loading pre-pressure function by setting a pre-pressure mechanism and using a push-rod linear stepper motor. Furthermore, it provides test supports and a three-axis motion mechanism for the rotor and stator of the ultrasonic motor respectively, enabling performance testing under different pre-pressure load conditions after the ultrasonic motor is disassembled. In addition, this invention connects two test platforms to a host computer, allowing each platform to conduct tests independently, improving testing efficiency while achieving fully automated control and recording of various test data, effectively enhancing the detection efficiency of ultrasonic motors. Attached Figure Description

[0014] Figure 1 This is a structural diagram of the ultrasonic motor testing device according to an embodiment of the present invention; Figure 2 This is another structural view of the ultrasonic motor testing device according to an embodiment of the present invention; Figure 3 This is a structural diagram of the test platform of the ultrasonic motor testing device according to an embodiment of the present invention; Figure 4This is a structural view of the test platform of the ultrasonic motor testing device according to an embodiment of the present invention from another angle; Figure 5 This is a structural view of the test platform of the ultrasonic motor testing device according to an embodiment of the present invention from another angle; Figure 6 This is a front view of the test platform of the ultrasonic motor testing device according to an embodiment of the present invention; exist Figures 1 to 6 In the diagram, the correspondence between the component names and the drawing numbers is as follows: 1--Host computer, 2--Frame, 3--Test platform, 31--Base, 32--Pre-compression mechanism, 321--Linear guide rail, 322--Slider, 323--Slide plate, 324--Drive unit, 325--Sensor bracket, 325a--Inner groove, 326--First photoelectric sensor, 327--Second photoelectric sensor, 328--Shielding plate, 33--Three-axis motion mechanism, 331--X-axis motion assembly, 3311--First fixed seat, 3312--First sliding seat, 3313--First push plate, 3314--First cylinder, 3315--First locking plate, 3316--First locking bolt, 332--Y-axis motion assembly, 3321--Second fixed seat, 33 22--Second sliding seat, 3323--Second push plate, 3324--Second cylinder, 3325--Second locking plate, 3326--Second locking bolt, 333--Z-axis motion assembly, 3331--Vertical bracket, 3332--Third fixed seat, 3333--Third sliding seat, 3334--Third cylinder, 3335--Third locking plate, 3336--Third locking bolt, 34--Test bracket, 341--Column, 342--Horizontal plate, 343--Horizontal beam, 344--Vertical plate, 35--Stator mounting seat, 36--Rotor mounting seat, 361--Shaft, 362--Spring floating mechanism, 37--Hysteresis brake, 38--Temperature sensor, 39--Coupling. Detailed Implementation

[0015] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this disclosure. The following examples are used to illustrate this utility model, but should not be used to limit the scope of this utility model.

[0016] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] Please refer to Figures 1 to 6 This utility model provides an ultrasonic motor testing device, including a host computer 1, a frame 2, and a testing system installed in the frame 2; the testing system includes two sets of testing platforms 3, and the testing platform 3 includes a base 31, a pre-compression mechanism 32, a three-axis motion mechanism 33, a testing bracket 34, a stator mounting base 35, a rotor mounting base 36, a hysteresis brake 37, and a temperature sensor 38; The pre-compression mechanism 32 and the test bracket 34 are respectively mounted on the base 31. The three-axis motion mechanism 33 is mounted on the pre-compression mechanism 32. The stator mounting base 35 is mounted on the three-axis motion mechanism 33. The rotor mounting base 36 is mounted on the test bracket 34. The pre-compression mechanism 32 is used to drive the three-axis motion mechanism 33 to move in the horizontal direction. The three-axis motion mechanism 33 is used to drive the stator mounting base 35 to move. The hysteresis brake 37 is mounted on the test bracket 34 and is connected to the rotor mounting base 36 through a coupling 39. The temperature sensor 38 is mounted on the top of the test bracket 34, with its detection end facing downward. The hysteresis brake 37 and the temperature sensor 38 are respectively electrically connected to the host computer 1.

[0019] Traditional stator performance testing requires assembling and debugging the motor. The stability of the motor structure significantly impacts test results, making it difficult to reproduce all findings. Furthermore, it lacks the ability to steplessly adjust preload and stiffness while detecting output force. Moreover, performance test results are influenced by the motor system, making it difficult to pinpoint factors such as the ceramic, adhesive, metallic elastomer, and friction materials of the resonator body. Therefore, a customized ultrasonic motor stator decoupling test bench is needed to build individual DOE (Design of Effect) capabilities for each motor component, thereby improving iteration efficiency.

[0020] In this embodiment of the invention, the testing system includes two independent testing platforms 3, which can simultaneously test two ultrasonic motors. Compared to a single-platform design, the testing efficiency is nearly doubled, making it particularly suitable for rapid iterative verification during the R&D phase or batch quality inspection needs during the production phase. The two platforms share the stable environment of the rack 2 and the control parameters of the host computer 1, allowing for comparative testing under completely consistent external conditions. This avoids comparison errors caused by fluctuations in testing time and environment, thus improving data reliability.

[0021] This embodiment separates the stator, rotor, and load components, and uses a base plate for position limitation and reinforcement to ensure test stability. The stator mounting base 35 is driven by a pre-compression mechanism 32 and a three-axis motion mechanism 33. The pre-compression mechanism 32 is responsible for rapid horizontal adjustment and pre-tightening, quickly moving the stator to the approximate alignment area with the rotor and providing initial pre-pressure to ensure initial contact between the stator and rotor. The three-axis motion mechanism 33 is responsible for fine-tuning in three-dimensional space, allowing for precise adjustment of the stator position along the X, Y, and Z axes to achieve accurate contact between the stator and rotor. Since the performance of the ultrasonic motor is highly dependent on the contact state of the stator and rotor, this structure effectively avoids test data distortion caused by alignment deviations. Through the wide range of movement of the pre-compression mechanism 32 and the fine compensation of the three-axis mechanism, this embodiment is compatible with ultrasonic motors of different sizes and models, allowing for testing and adaptation of different samples without changing the mounting base, thus reducing equipment modification costs.

[0022] In terms of testing, this embodiment integrates a hysteresis brake 37 and a temperature sensor 38, both of which are linked to the host computer 1 to achieve multi-dimensional testing of motor performance and operating status. Specifically, the rotor mounting base 36 is fixed to the test bracket 34 and directly connected to the hysteresis brake 37 via a coupling 39. This connection method has a short force transmission path and no additional interference, and can accurately simulate the load of the ultrasonic motor under different operating conditions. The load parameters of the hysteresis brake 37 are controlled in real time by the host computer 1, which can comprehensively test the load response characteristics of the motor. The temperature sensor 38 is located at the top of the test bracket 34, with the detection end pointing downwards towards the stator-rotor contact area (i.e., the core heat point of the ultrasonic motor). It can collect temperature change data in real time during the test. The host computer 1 can combine the load and temperature data to more comprehensively evaluate the correlation characteristics of the motor, providing a basis for reliability design.

[0023] The working process of this embodiment is as follows: The stator of the ultrasonic motor is fixed to the stator mounting base 35, and the rotor is fixed to the rotor mounting base 36. The preload mechanism 32 drives the three-axis motion mechanism 33 to move horizontally, bringing the stator closer to the rotor; the three-axis motion mechanism 33 finely adjusts the stator position along the X, Y, and Z axes to ensure precise contact between the stator and rotor and achieve the preset preload. The host computer 1 controls the hysteresis brake 37 to apply a set load to the rotor through the coupling 39. When the ultrasonic motor is running, the temperature sensor 38 detects the temperature of the stator-rotor contact area in real time and transmits the data back to the host computer 1. The host computer 1 synchronously records the load data of the hysteresis brake 37 and the temperature data of the temperature sensor 38 to complete the testing of the motor's load characteristics, temperature characteristics, and other performance characteristics. The two test platforms 3 can work independently or synchronously to achieve efficient parallel testing.

[0024] Furthermore, safety light curtains and tri-color lights are installed on both sides of the frame 2. The tri-color lights indicate the operating status of the test platform 3. The safety light curtains are used to detect whether personnel or objects have entered the test area, thereby preventing accidents from happening.

[0025] Preferably, the pre-compression mechanism 32 includes a linear guide rail 321, a plurality of sliders 322, a slide plate 323, and a drive unit 324; the linear guide rail 321 is fixedly mounted on the base 31, the sliders 322 are slidably mounted on the linear guide rail 321, the slide plate 323 is connected to the sliders 322, and the three-axis motion mechanism 33 is mounted on the slide plate 323; a connecting plate is provided on the side of the slide plate 323, and the drive unit 324 is mounted on the base 31 and connected to the connecting plate.

[0026] In this embodiment, the linear guide rail 321 provides a rigid guiding reference. The slider 322 has a low coefficient of friction and controllable gap when sliding along the guide rail, ensuring that the slide plate 323 and the three-axis motion mechanism 33 above it move in a strictly horizontal direction, providing a stable reference for the initial alignment and preloading of the stator and rotor. Multiple sliders 322 are evenly distributed on the linear guide rail 321, distributing the weight of the slide plate 323 and the load above it, reducing the stress on a single point, preventing the slide plate 323 from tilting due to uneven load, and ensuring motion stability. The drive unit 324 is directly connected to the slide plate 323 via a connecting plate. Combined with the low friction characteristics of the linear guide rail 321, it enables rapid start / stop and position adjustment of the slide plate 323, meeting preloading requirements. The linear guide rail 321 is rigidly connected to the base 31, and the slide plate 323 is rigidly fixed to the sliders 322. The overall structure has strong resistance to deformation, can adapt to stators of different weights, and improves the versatility of the device. Linear guide 321 and slider 322 are standardized wear parts, which are easy to replace after wear; their sealing structure can reduce the impact of dust and oil on movement, and with regular lubrication, they can ensure long-term stable operation and reduce maintenance costs.

[0027] In this embodiment, both the stator mounting base 35 and the rotor mounting base 36 are clamps, which are used to clamp the stator and rotor of the ultrasonic motor, respectively. The specific structure of the stator mounting base 35 and the rotor mounting base 36 can be adjusted according to actual production needs, and common clamps in the art can achieve the clamping effect. In addition, the stator mounting base 35 and the rotor mounting base 36 are both detachable for easy replacement.

[0028] The above structural design provides a stable, fast, and reliable horizontal movement foundation for the pre-compression mechanism 32, directly ensuring the accuracy of subsequent stator and rotor alignment and the stability of the testing process.

[0029] Preferably, the drive unit 324 is a push-rod linear stepper motor, and the output end of the push-rod linear stepper motor is connected to the connecting plate; the push-rod linear stepper motor is provided with a stepper motor cover. In this embodiment, a push-rod linear stepper motor is used, whose output end is directly connected to the connecting plate, and can directly output linear motion without the need for an intermediate conversion mechanism, which can effectively reduce transmission errors and losses. In addition, the stepping control adjustment is precise, adaptable to coarse and fine adjustments, and the structure is compact and space-saving. The stepper motor cover can effectively prevent external dust, oil, and small debris from entering the stepper motor, avoiding impurities from affecting the electromagnetic coupling accuracy of the motor rotor and stator or causing mechanical jamming, ensuring stable operation during long-term testing.

[0030] Preferably, the base 31 has a sensor bracket 325 on its side, and the sensor bracket 325 has an inner groove 325a. A first photoelectric sensor 326 and a second photoelectric sensor 327 are mounted on the inner groove 325a. The mounting positions of the first photoelectric sensor 326 and the second photoelectric sensor 327 on the inner groove 325a can be changed horizontally. The first photoelectric sensor 326 and the second photoelectric sensor 327 are electrically connected to the host computer 1. A shielding plate 328 is provided on the sliding plate 323, and the shielding plate 328 cooperates with the first photoelectric sensor 326 and the second photoelectric sensor 327. In this embodiment, by setting the first photoelectric sensor 326 and the second photoelectric sensor 327, and by allowing the first and second photoelectric sensors 327 to be horizontally moved and adjusted on the inner groove 325a of the sensor bracket 325, the sensing range can be flexibly set according to testing requirements (such as the test stroke and detection points of different motor models). This allows for adaptation to various testing scenarios without replacing the bracket, improving the versatility of the device. For example, the position of the first photoelectric sensor 326 can be used as the pre-pressure origin, and the position of the second photoelectric sensor 327 can be used as the pre-pressure limit point to further improve the accuracy of pre-pressure. The inner groove 325a provides a stable installation reference for the sensor, ensuring that the sensor can maintain horizontal positioning accuracy after adjustment; the two sensors work together with the upper computer 1 to accurately capture the origin and limit positions of the slide plate 323, realize precise limit and monitoring of the movement of the pre-pressure mechanism 32, and ensure test safety.

[0031] Preferably, the three-axis motion mechanism 33 includes an X-axis motion component 331, a Y-axis motion component 332, and a Z-axis motion component 333; the X-axis motion component 331 is mounted on the slide plate 323, the Y-axis motion component 332 is mounted on the X-axis motion component 331, and the Z-axis motion component 333 is mounted on the Y-axis motion component 332; the X-axis motion component 331 drives the Y-axis motion component 332 to move along the X-axis direction, and the Y-axis motion component 332 drives the Z-axis motion component 333 to move along the Y-axis direction; the stator mounting base 35 is connected to the Z-axis motion component 333, and the Z-axis motion component 333 drives the stator mounting base 35 to move along the Z-axis direction.

[0032] Preferably, the X-axis motion assembly 331 includes a first fixed seat 3311, a first sliding seat 3312, a first push plate 3313, a first cylinder 3314, a first locking plate 3315, and a first locking bolt 3316; the first fixed seat 3311 is connected to the X-axis motion assembly 331, and the first sliding seat 3312 is slidably disposed on the first fixed seat 3311; the first push plate 3313 is disposed on the side of the first sliding seat 3312; the first cylinder 3314 is mounted on the side of the first fixed seat 3311, and its piston rod is connected to the first push plate 3313; the first locking plate 3315 is provided with a first sliding groove, and the first locking plate 3315 is connected to the first fixed seat 3311; the first locking bolt 3316 passes through the first sliding groove and is threadedly connected to the first sliding seat 3312. In this embodiment, the first cylinder 3314 drives the first sliding seat 3312 to slide along the first fixed seat 3311, achieving rapid adjustment in the X-axis direction. This is less strenuous than manual adjustment and has a rapid response, making it suitable for scenarios requiring frequent adjustments. The first locking bolt 3316 passes through the first groove of the first locking plate 3315 and connects to the first sliding seat 3312. After adjustment, the bolt can be tightened to lock the position, preventing the sliding seat from shifting due to vibration or external force, and ensuring stable and reliable positioning in the X-axis direction.

[0033] Preferably, the Y-axis motion assembly 332 includes a second fixed seat 3321, a second sliding seat 3322, a second push plate 3323, a second cylinder 3324, a second locking plate 3325, and a second locking bolt 3326. The second fixed seat 3321 is connected to the first sliding seat 3312, and the second sliding seat 3322 is slidably disposed on the second fixed seat 3321. The second push plate 3323 is disposed on the side of the second sliding seat 3322. The second cylinder 3324 is installed on the side of the second fixed seat 3321, and its piston rod is connected to the second push plate 3323. The second locking plate 3325 is provided with a second sliding groove, and the second locking plate 3325 is connected to the second fixed seat 3321. The second locking bolt 3326 passes through the second sliding groove and is threadedly connected to the second sliding seat 3322. In this embodiment, the second cylinder 3324 drives the second sliding seat 3322 to slide along the second fixed seat 3321, thereby achieving rapid adjustment in the Y-axis direction. The second locking bolt 3326 passes through the second groove of the second locking plate 3325 and connects to the second sliding seat 3322. After adjustment, the bolt can be tightened to lock the position and prevent the sliding seat from shifting.

[0034] Preferably, the Z-axis motion assembly 333 includes a vertical support 3331, a third fixed seat 3332, a third sliding seat 3333, a third cylinder 3334, a third locking plate 3335, and a third locking bolt 3336; the vertical support 3331 is connected to the second sliding seat 3322, the third fixed seat 3332 is mounted on the vertical support 3331, the third sliding seat 3333 is slidably disposed on the third fixed seat 3332, the third cylinder 3334 is mounted on the third sliding seat 3333, and its piston rod is connected to the third fixed seat 3332; the stator mounting seat 35 is disposed on the third sliding seat 3333; the third locking plate 3335 is provided with a third sliding groove, and the third locking plate 3335 is connected to the third fixed seat 3332; the third locking bolt 3336 passes through the third sliding groove and is threadedly connected to the third sliding seat 3333.

[0035] In this embodiment, the third cylinder 3334 directly drives the third sliding seat 3333 to move vertically along the third fixed seat 3332, providing rapid response and stable power. This allows for quick height adjustment of the stator mounting seat 35, adapting to motor stators of different thicknesses or heights. The third locking bolt 3336, in conjunction with the third groove of the third locking plate 3335, securely locks the third sliding seat 3333 after adjustment, preventing positional shifts due to gravity or vibration and ensuring positioning accuracy in the Z-axis direction. The integrated design of the third cylinder 3334 and the third sliding seat 3333 saves space, and the component directly connects to the second sliding seat 3322, facilitating three-axis linkage with the X and Y axes and improving the overall adjustment coordination.

[0036] Preferably, the test bracket 34 includes a column 341, a horizontal plate 342, a horizontal beam 343, and a vertical plate 344; the bottom of the column 341 is connected to the base 31, and the top is connected to the horizontal plate 342; the horizontal beam 343 is connected to the column 341, and the vertical plate 344 is installed at the end of the horizontal beam 343; the hysteresis brake 37 is disposed on the column 341, the rotor mounting seat 36 is disposed on the vertical plate 344, the rotor mounting seat 36 is provided with a rotating shaft 361, one end of the rotating shaft 361 is provided with a spring floating mechanism 362, the spring floating mechanism 362 is used to connect the rotor of the ultrasonic motor; the other end of the rotating shaft 361 is connected to the hysteresis brake 37 through a coupling 39; the temperature sensor 38 is disposed on the horizontal plate 342, and its detection end is disposed towards the area between the rotor mounting seat 36 and the stator mounting seat 35.

[0037] This embodiment comprises a three-dimensional frame structure formed by columns 341, horizontal plates 342, and horizontal beams 343. The bottom is rigidly connected to the base 31, while the top stably supports the horizontal plates 342, resulting in strong overall resistance to deformation. In this embodiment, the spring floating mechanism 362 is a mechanical structure that utilizes the elastic properties of springs to allow a component to move freely within a certain range. The rotor shaft 361 of the rotor mounting base 36 is connected to the ultrasonic motor rotor via the spring floating mechanism 362. This buffers the rigid impact during stator-rotor contact while allowing for minute adaptive position adjustments, ensuring that the stator and rotor maintain a uniform and stable contact state throughout the test, avoiding sample damage or test data distortion caused by rigid connections. The hysteresis brake 37 is mounted on the column 341 and directly connected to the rotor shaft 361 of the rotor mounting base 36 via a coupling 39. This results in a short force transmission path without unnecessary intermediate links, reducing load loss and hysteresis, ensuring that the load applied by the hysteresis brake 37 is precisely applied to the rotor, and improving the accuracy of load testing. Temperature sensor 38 is mounted on horizontal plate 342, with its detection end directly aligned with the stator-rotor contact area (the core heating point of the ultrasonic motor). This allows for precise capture of the most critical temperature changes during testing, avoiding temperature data deviations caused by detection point offsets and providing a reliable basis for motor thermal performance evaluation. Through the above structural arrangement, the spatial distribution of the column 341, horizontal beam 343, and vertical plate 344 ensures that the hysteresis brake 37, rotor mounting base 36, and temperature sensor 38 are all properly positioned. This avoids motion interference between components, saves space on the test platform 3, and facilitates sample installation and subsequent maintenance.

[0038] Furthermore, the spring floating mechanism 362 can be replaced with soft rubber.

[0039] Preferably, the two sets of test platforms 3 are arranged vertically.

[0040] Compared with existing technologies, the advantages of this invention are as follows: This invention has a reasonable design and simple structure. Targeting existing traveling wave motor performance testing scenarios, it achieves stepless loading pre-pressure function by setting a pre-pressure mechanism and using a push-rod linear stepper motor. Furthermore, it provides test supports and a three-axis motion mechanism for the rotor and stator of the ultrasonic motor respectively, enabling performance testing under different pre-pressure load conditions after the ultrasonic motor is disassembled. In addition, this invention connects two test platforms to a host computer, allowing each platform to conduct tests independently, improving testing efficiency while achieving fully automated control and recording of various test data, effectively enhancing the detection efficiency of ultrasonic motors.

[0041] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. An ultrasonic motor testing device, characterized in that, It includes a host computer (1), a frame (2) and a test system located in the frame; the test system includes two test platforms (3), each test platform including a base (31), a pre-compression mechanism (32), a three-axis motion mechanism (33), a test bracket (34), a stator mounting base (35), a rotor mounting base (36), a hysteresis brake (37) and a temperature sensor (38). The pre-compression mechanism and the test bracket are respectively mounted on the base, the three-axis motion mechanism is mounted on the pre-compression mechanism, the stator mounting base is mounted on the three-axis motion mechanism, and the rotor mounting base is mounted on the test bracket; the pre-compression mechanism is used to drive the three-axis motion mechanism to move in the horizontal direction, and the three-axis motion mechanism is used to drive the stator mounting base to move; the hysteresis brake is mounted on the test bracket and is connected to the rotor mounting base through a coupling (39); the temperature sensor is located on the top of the test bracket, with its detection end facing downwards; the hysteresis brake and the temperature sensor are respectively electrically connected to the host computer.

2. The ultrasonic motor testing device according to claim 1, characterized in that, The pre-compression mechanism includes a linear guide rail (321), several sliders (322), a slide plate (323), and a drive unit (324); the linear guide rail is fixedly mounted on the base, the sliders are slidably mounted on the linear guide rail, the slide plate is connected to the sliders, and the three-axis motion mechanism is mounted on the slide plate; a connecting plate is provided on the side of the slide plate, and the drive unit is mounted on the base and connected to the connecting plate.

3. The ultrasonic motor testing device according to claim 2, characterized in that, The drive unit is a push rod type linear stepper motor, and the output end of the push rod type linear stepper motor is connected to the connecting plate; the push rod type linear stepper motor is provided with a stepper motor cover.

4. The ultrasonic motor testing device according to claim 2, characterized in that, The base has a sensor bracket (325) on its side, and an inner groove (325a) on the sensor bracket. A first photoelectric sensor (326) and a second photoelectric sensor (327) are provided on the inner groove. The installation positions of the first photoelectric sensor and the second photoelectric sensor on the inner groove can be changed in the horizontal direction. The first photoelectric sensor and the second photoelectric sensor are electrically connected to the host computer. A shielding plate (328) is provided on the slide plate, and the shielding plate is configured to cooperate with the first photoelectric sensor and the second photoelectric sensor.

5. The ultrasonic motor testing device according to claim 2, characterized in that, The three-axis motion mechanism includes an X-axis motion component (331), a Y-axis motion component (332), and a Z-axis motion component (333); the X-axis motion component is on the slide plate, the Y-axis motion component is disposed on the X-axis motion component, and the Z-axis motion component is mounted on the Y-axis motion component; the X-axis motion component drives the Y-axis motion component to move along the X-axis direction, and the Y-axis motion component drives the Z-axis motion component to move along the Y-axis direction; the stator mounting base is connected to the Z-axis motion component, and the Z-axis motion component drives the stator mounting base to move along the Z-axis direction.

6. The ultrasonic motor testing device according to claim 5, characterized in that, The X-axis motion assembly includes a first fixed seat (3311), a first sliding seat (3312), a first push plate (3313), a first cylinder (3314), a first locking plate (3315), and a first locking bolt (3316). The first fixed seat is connected to the X-axis motion assembly, and the first sliding seat is slidably disposed on the first fixed seat. The first push plate is disposed on the side of the first sliding seat. The first cylinder is installed on the side of the first fixed seat, and its piston rod is connected to the first push plate. The first locking plate is provided with a first sliding groove, and the first locking plate is connected to the first fixed seat. The first locking bolt passes through the first sliding groove and is threadedly connected to the first sliding seat.

7. The ultrasonic motor testing device according to claim 6, characterized in that, The Y-axis motion assembly includes a second fixed seat (3321), a second sliding seat (3322), a second push plate (3323), a second cylinder (3324), a second locking plate (3325), and a second locking bolt (3326); the second fixed seat is connected to the first sliding seat, and the second sliding seat is slidably disposed on the second fixed seat; the second push plate is disposed on the side of the second sliding seat; the second cylinder is installed on the side of the second fixed seat, and its piston rod is connected to the second push plate; the second locking plate is provided with a second sliding groove, and the second locking plate is connected to the second fixed seat; the second locking bolt passes through the second sliding groove and is threadedly connected to the second sliding seat.

8. The ultrasonic motor testing device according to claim 7, characterized in that, The Z-axis motion assembly includes a vertical support (3331), a third fixed seat (3332), a third sliding seat (3333), a third cylinder (3334), a third locking plate (3335), and a third locking bolt (3336). The vertical support is connected to the second sliding seat, the third fixed seat is mounted on the vertical support, the third sliding seat is slidably mounted on the third fixed seat, the third cylinder is mounted on the third sliding seat, and its piston rod is connected to the third fixed seat. The stator mounting seat is mounted on the third sliding seat. The third locking plate has a third sliding groove and is connected to the third fixed seat. The third locking bolt passes through the third sliding groove and is threadedly connected to the third sliding seat.

9. The ultrasonic motor testing device according to claim 1, characterized in that, The test bracket includes a column (341), a horizontal plate (342), a horizontal beam (343), and a vertical plate (344); the bottom of the column is connected to the base, and the top is connected to the horizontal plate; the horizontal beam is connected to the column, and the vertical plate is installed at the end of the horizontal beam; the hysteresis brake is located on the column, the rotor mounting seat is located on the vertical plate, the rotor mounting seat is provided with a rotating shaft (361), one end of the rotating shaft is provided with a spring floating mechanism (362), the spring floating mechanism is used to connect the rotor of the ultrasonic motor; the other end of the rotating shaft is connected to the hysteresis brake through a coupling; the temperature sensor is located on the horizontal plate, and its detection end is set towards the area between the rotor mounting seat and the stator mounting seat.

10. The ultrasonic motor testing device according to claim 1, characterized in that, The two sets of test platforms are arranged vertically.

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