Motor test methods

Abstract

The present invention discloses a motor testing method, comprising mounting a target product on the positioning platform, and providing a forward or reverse excitation signal to the target product, wherein a push assembly abuts against a first slide, a shock absorber is connected between a bottom plate and a carrier plate, and at least two clamps are separated from the carrier plate; an audio acquisition assembly is started to detect noise, and an accelerometer is abutted against the target product to detect vibration; the accelerometer is controlled to stop vibration detection, and the carrier plate is abutted by at least two clamps; a displacement sensor is abutted against a rotating shaft of the target product to detect shaft runout by the displacement sensor; a second slide is driven to move by a slide drive mechanism to connect a torque sensor to the rotating shaft of the target product, wherein a hysteresis brake provides zero load; torque is detected by a torque sensor, and rotation speed is detected by a photoelectric sensor and a code disc. The present invention can continuously detect multiple functions of a motor.

Description

Technical Field

[0001] The invention relates to the technical field of automated testing, and in particular to a motor testing method. Background Art

[0002] Electric motors (also known as motors) are common power equipment. With the development of technology, small electric motors are used more and more widely, and are commonly found in household appliances and 3C products. In order to ensure the production quality of electric motors, quality tests need to be carried out before they leave the factory. However, the test equipment of related technologies can perform fewer test items, the integration is not high, and the simulated working conditions of different test items are different. If multiple tests are to be carried out, multiple different devices are required to carry out collaborative testing. It takes time to transfer the target product between different devices, and it is difficult to continuously test multiple functions of the motor. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a motor testing method, which can continuously detect multiple functions of the motor.

[0004] An embodiment of the present invention provides a motor testing method, which is applied to a motor testing device, including:

[0005] Mounting the target product on the positioning platform and providing a forward or reverse excitation signal to the target product, wherein the positioning platform is mounted on the intermediate platform, the intermediate platform is mounted on the first slide, and the intermediate platform is in a flexible connection state;

[0006] Starting an audio collection component to detect noise, and placing an accelerometer against the target product to detect vibration, wherein the audio collection component and the accelerometer are both mounted on the peripheral side of the positioning platform;

[0007] Controlling the accelerometer to stop vibration detection, and controlling the intermediate platform to switch to a rigid connection state;

[0008] A displacement sensor is placed against the rotating shaft of the target product to detect shaft runout, wherein the displacement sensor is arranged on the peripheral side of the positioning platform;

[0009] Controlling the push assembly to abut against the first slide, and driving the second slide to move through the slide drive mechanism, so that the torque sensor is connected to the rotating shaft of the target product, the slide drive mechanism is connected to the second slide, the second slide and the first slide are installed on the same slide rail, and the second slide and the push assembly are distributed on opposite sides of the first slide, the torque sensor is installed on the second slide and connected to a hysteresis brake, and the hysteresis brake provides zero load;

[0010] The torque is detected by the torque sensor, and / or the rotation speed is detected by a photoelectric sensor and a code disc; the code disc is connected to the torque sensor, and the photoelectric sensor is arranged on the adjacent side of the code disc and facing the code disc.

[0011] According to some embodiments of the present invention, the motor testing method further includes:

[0012] Controlling the hysteresis brake to provide a preset load;

[0013] The torque is detected by the torque sensor, and / or the rotation speed is detected by the photoelectric sensor and the code disc.

[0014] According to some embodiments of the present invention, the method of detecting the torque by the torque sensor and / or detecting the rotation speed by the photoelectric sensor and the code disc further comprises:

[0015] Controlling the intermediate platform to switch to a flexible connection state;

[0016] The target product is started and vibration detection is performed on the target product through the accelerometer.

[0017] According to some embodiments of the present invention, a radial thrust mechanism is installed on the first slide, and the radial thrust mechanism is connected to a second pressure detection component. The motor testing method further includes:

[0018] Controlling the intermediate platform to switch to a rigid connection state, and controlling the hysteresis brake to provide zero load;

[0019] A preset radial thrust is applied to the rotating shaft of the target product through the radial thrust mechanism, and the radial thrust is monitored through the second pressure detection component.

[0020] According to some embodiments of the present invention, the step of applying a preset radial thrust to the rotating shaft of the target product by the radial thrust mechanism and monitoring the radial thrust by the second pressure detection assembly further includes at least one of the following:

[0021] Detecting torque by means of the torque sensor;

[0022] Detecting the rotation speed by the photoelectric sensor and the code disc;

[0023] The shaft runout is detected by the displacement sensor.

[0024] According to some embodiments of the present invention, a first pressure detection component is further provided on an adjacent side of the first slide, and the motor testing method further comprises:

[0025] Controlling the radial thrust mechanism to reset;

[0026] Controlling the push assembly to retract so as to disengage from the first slide;

[0027] The second slide is driven to move by the slide driving mechanism to apply axial thrust to the target product through the torque sensor, so that the first slide, the intermediate platform, the positioning platform and one of the target products abut against the first pressure detection component, and the axial thrust is monitored through the first pressure detection component.

[0028] According to some embodiments of the present invention, the second slide is driven to move by the slide drive mechanism to apply an axial thrust to the target product through the torque sensor, so that one of the first slide, the intermediate platform, the positioning platform and the target product abuts against the first pressure detection component, and the axial thrust is monitored by the first pressure detection component, and then at least one of the following is further included:

[0029] Detecting torque by means of the torque sensor;

[0030] Detecting the rotation speed by the photoelectric sensor and the code disc;

[0031] The shaft runout is detected by the displacement sensor.

[0032] According to some embodiments of the present invention, the motor testing method further includes:

[0033] The second slide table is driven to reset by the slide table driving mechanism so as to separate the torque sensor from the rotating shaft of the target product;

[0034] The pushing assembly is controlled to abut against the first slide table to push the first slide table to an initial position.

[0035] According to some embodiments of the present invention, the intermediate platform includes a bottom plate, a carrier plate, a shock absorber and at least two clamping members, the bottom plate is connected to the first slide, the carrier plate is connected to the positioning platform, and the control of switching the intermediate platform to a rigid connection state includes:

[0036] The at least two clamping members are controlled to abut against the side of the carrier plate.

[0037] According to some embodiments of the present invention, the intermediate platform includes a bottom plate, a carrier plate, a shock absorber and at least two clamping members, the bottom plate is connected to the first slide, the carrier plate is connected to the positioning platform, and the controlling the intermediate platform to switch to a flexible connection state includes:

[0038] The at least two clamping members are controlled to be separated from the carrier plate.

[0039] The embodiments of the present invention have at least the following beneficial effects:

[0040] The audio acquisition component can be used to continuously detect noise during the test process. The intermediate platform can switch between flexible connection and rigid connection to meet the test conditions under different working conditions. During the test, data can be collected through the audio acquisition component, torque sensor, photoelectric sensor, accelerometer and displacement sensor, which can continuously detect multiple functions of the motor.

[0041] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0043] Figure 1 A flowchart of the steps of the motor testing method according to an embodiment of the present invention;

[0044] Figure 2 This is one of the structural schematic diagrams of the motor testing equipment according to an embodiment of the present invention;

[0045] Figure 3 This is a second structural schematic diagram of the motor testing equipment according to an embodiment of the present invention;

[0046] Figure 4 This is a third structural schematic diagram of the motor testing equipment according to an embodiment of the present invention;

[0047] Figure 5 for Figure 2 The schematic diagram of the structure of the intermediate platform and the positioning platform of the motor testing equipment shown;

[0048] Figure 6 for Figure 5 The exploded structure diagram of the intermediate platform and the positioning platform is shown;

[0049] Figure 7 for Figure 3 The middle circle shows a partial enlarged view of position A.

[0050] Reference numerals:

[0051] Base 100, first slide rail 110, push assembly 120, first pressure detection assembly 130, first slide 210, second slide 220, slide drive mechanism 221, intermediate carrier 300, bottom plate 310, carrier plate 320, second wedge surface 321, shock absorber 330, clamping member 340, first wedge surface 341, positioning carrier 400, positioning block 410, positioning cavity 411, avoidance position 412, first clamping block 420, second clamping block 430, two-way Cylinder 440, radial thrust mechanism 500, push block 510, elastic member 511, first rolling member 512, second rolling member 513, first lifting drive member 520, second pressure detection component 530, audio collection component 610, accelerometer 620, lifting and rotating mechanism 621, displacement sensor 630, second lifting drive member 631, torque sensor 700, hysteresis brake 710, third slide 711, code disk 720, photoelectric sensor 730. DETAILED DESCRIPTION

[0052] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0053] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0054] In the description of the present invention, "several" means one or more, "multiple" means more than two, greater than, less than, and exceeding are understood as not including the number itself, and "above", "below", and "within" are understood as including the number itself. If there is a description of "first", "second", etc., it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0055] In the description of the present invention, unless otherwise clearly defined, words such as “setting”, “installation” and “connection” should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0056] Please refer to Figure 1This embodiment discloses a motor testing method, including steps S110 to S160. It should be noted that the steps in this embodiment are numbered only for the convenience of review and understanding, rather than limiting the execution order of the steps. The motor testing method of this embodiment is applied to a motor testing device. In order to facilitate the understanding of the motor testing method of this embodiment, the structure of the motor testing device is described below.

[0057] Please refer to Figure 2 , Figure 3 and Figure 4 The motor testing equipment includes a first slide assembly and a second slide assembly installed on the same slide rail. Exemplarily, a first slide rail 110 is installed on the base 100, and the first slide assembly and the second slide assembly are both slidably installed on the first slide rail 110. For example, the first slide assembly includes a first slide 210, an intermediate platform 300 and a positioning platform 400, and the second slide assembly includes a second slide 220, a torque sensor 700, a hysteresis brake 710, a code disk 720 and a photoelectric sensor 730. The first slide 210 and the second slide 220 are both slidably installed on the first slide rail 110. The intermediate platform 300 is installed on the first slide 210. The intermediate platform 300 includes a base plate 310, a carrier plate 320, a shock absorber 330 and at least two clamping members 340. The base plate 310 is connected to the first slide 210. The shock absorber 330 is connected between the base plate 310 and the carrier plate 320. The shock absorber 330 can adopt structures such as urethane foam, shock-absorbing silicone or shock-absorbing springs. The clamping member 340 is a cylinder-driven structure. At least two clamping members 340 are installed on the base plate 310 and distributed on opposite sides of the carrier plate 320. The positioning platform 400 is installed on the carrier plate 320. The positioning platform 400 is used to carry the target product. A push assembly 120 is provided on the adjacent side of the first slide assembly. Specifically, the push assembly 120 is installed on the base 100 and is located on the adjacent side of the first slide 210. An audio collection component 610, an accelerometer 620 and a displacement sensor 630 are arranged on the surrounding side of the positioning platform 400. The audio collection component 610 uses a microphone. The second slide 220 is connected to a slide drive mechanism 221. The slide drive mechanism 221 uses a combination of a screw rod and a motor. The torque sensor 700 is installed on the second slide 220. The torque sensor 700 is connected to the hysteresis brake 710 and the code disk 720. The photoelectric sensor 730 is arranged on the adjacent side of the code disk 720, and the detection end of the photoelectric sensor 730 faces the code disk 720.

[0058] This embodiment takes small motors as target products, and the size of small motors is small. Correspondingly, the volume of the motor test equipment of this embodiment is also small. In order to meet the requirements of miniaturization design, the structural arrangement between the various components of the motor test equipment is compact. For example, the intermediate platform 300 and the positioning platform 400 are arranged on the first slide 210, and the torque sensor 700, the hysteresis brake 710, the code disc 720 and the photoelectric sensor 730 are arranged on the second slide 220, wherein the hysteresis brake 710 is installed on the third slide 711, and can be connected or disconnected from the torque sensor 700 under the drive of the third slide 711, and the push assembly 120, the audio collection assembly 610, the accelerometer 620 and the displacement sensor 630 are distributed around the first slide assembly, adopting a modular structural layout, with a clear and compact layout, high integration and easy debugging and maintenance.

[0059] The test items for small motors include no-load test, load test, radial force test and axial force test. Among them, in order to improve the accuracy of the test, some items need to reduce the interference of external environmental factors (such as vibration) as much as possible, while the remaining test items will exert a certain force on the target product during the test, requiring the target product to be placed stably. Based on this, the present embodiment adds an intermediate platform 300 between the first slide 210 and the positioning platform 400. The intermediate platform 300 has two states: flexible connection and rigid connection, and can be freely switched according to the requirements of the test items during the test. For example, when the clamping member 340 is not in contact with the carrier plate 320, the carrier plate 320 is connected to the bottom plate 310 through the shock absorbing member 330. Since the shock absorbing member 330 has a shock absorbing effect, the vibration of the external environment transmitted through the first slide can be isolated, thereby improving the accuracy of the test; when the clamping member 340 is in contact with the side of the carrier plate 320, the carrier plate 320, the clamping member 340 and the bottom plate 310 form a rigid connection relationship, so that the connection between the carrier plate 320 and the bottom plate 310 is reliable, thereby improving the placement stability of the target product. It is worth mentioning that the clamping member 340 abuts against the side of the carrier plate 320 to clamp the carrier plate 320, which can prevent the carrier plate 320 from continuously applying pressure to the shock absorbing member 330 while clamping the carrier plate 320, reduce the fatigue of the shock absorbing member 330, and help improve the durability and shock absorbing reliability of the shock absorbing member 330. The number of the clamping members 340 may be determined according to actual application conditions, such as two or four, and each two clamping members 340 form a group, and respectively abut against the carrier plate 320 from opposite sides.

[0060] The following is a detailed description of each step:

[0061] S110, mounting the target product on the positioning platform 400, and providing a forward or reverse excitation signal to the target product, wherein the intermediate platform 300 is in a flexible connection state, that is, the shock absorbing member 330 is connected between the bottom plate 310 and the carrier plate 320, and at least two clamping members 340 are separated from the carrier plate 320;

[0062] For example, please refer to Figure 5 and Figure 6 The positioning platform 400 includes a positioning block 410, a first clamping block 420 and a second clamping block 430. A positioning cavity 411 is provided in the middle of the positioning block 410. The positioning cavity 411 is used to place the target product. Avoidance positions 412 are provided on the opposite sides of the positioning block 410. The first positioning block 410 and the second positioning block 410 are movably installed in the avoidance positions 412 and are connected to a two-way cylinder 440. The two-way cylinder 440 is used to drive the first clamping block 420 and the second clamping block 430 to move toward or away from each other, thereby clamping or releasing the target product. Among them, setting an avoidance position 412 on the positioning block 410 can reduce the relative height of the first clamp block 420 and the second clamp block 430, which is conducive to realizing a miniaturized design. The first clamp block 420 and the second clamp block 430 are driven by the bidirectional cylinder 440, which can not only save the number of cylinders and meet the requirements of miniaturized design, but also reduce the pressure applied to the carrier plate 320, improve the shock absorption effect of the intermediate platform 300 to a certain extent, and improve the movement synchronization performance of the first clamp block 420 and the second clamp block 430, so that the target product can be maintained at the preset center position. Among them, the two-way cylinder 440 is installed at the bottom of the positioning block 410 and connected to the carrier plate 320. The two-way cylinder 440 is set between the positioning block 410 and the carrier plate 320. The positioning block 410 can be supported by the two-way cylinder 440, and the center of gravity of the two-way cylinder 440 and the positioning block 410 can be maintained on the same or similar longitudinal straight line, which is beneficial to ensure the uniformity of force on the carrier plate 320 at various positions, avoid excessive force on one side, and help improve the shock absorption effect.

[0063] In this step, a forward or reverse excitation signal can be provided to the target product to perform a forward test or a reverse test on the target product, wherein the test items for the forward test and the reverse test are the same and are not distinguished in this article. In the initial state, the intermediate carrier 300 is in a flexible connection state, that is, the shock absorber 330 is connected between the base plate 310 and the carrier plate 320, and at least two clamping members 340 are separated from the carrier plate 320 to facilitate vibration detection. In this state, the carrier plate 320 is connected to the base plate 310 through the shock absorber 330, which can isolate the interference of external vibration factors on the vibration test, which is conducive to improving the accuracy of the detection.

[0064] S120, starting the audio collection component 610 to detect noise, and placing the accelerometer 620 against the target product to detect vibration;

[0065] Exemplarily, during the test, continuous noise detection is performed through the audio collection component 610. In order to improve the accuracy of the detection, the motor testing equipment also includes a soundproof box, and the first slide assembly and the second slide assembly are both installed in the soundproof box to reduce the interference of environmental noise. Figure 4 The accelerometer 620 is connected to a lifting and rotating mechanism 621, which adopts a cylinder-driven structure. In some application examples, the lifting and rotating mechanism 621 is installed on the base 100, or, in other application examples, the lifting and rotating mechanism 621 is installed on the top plate of the soundproof box. The lifting and rotating mechanism 621 is used to drive the accelerometer 620 to switch between the first working position and the second working position. The first working position and the second working position are located at different height planes. The lifting and rotating mechanism 621 has two action logics of lifting and rotating. The lifting and rotating mechanism 621 drives the accelerometer 620 to rotate around the axis and descend to switch from the second working position to the first working position. The accelerometer 620 abuts against the target product at the first working position to detect vibration of the target product. The second working position of the accelerometer 620 is located above the adjacent side of the positioning platform 400, which can avoid the placement track of the target product, which is conducive to installing the target product on the positioning platform 400.

[0066] S130, controlling the accelerometer 620 to stop vibration detection, and controlling the intermediate platform 300 to switch to a rigid connection state, that is, abutting against the side of the carrier plate 320 through at least two clamping members 340;

[0067] Exemplarily, after completing the vibration detection, the accelerometer 620 is controlled to stop signal collection, that is, the vibration detection is stopped. The side of the carrier plate 320 is abutted by at least two clamping members 340, so that the intermediate platform 300 is switched to a rigid connection state, that is, the carrier plate 320 is connected to the bottom plate 310 through the clamping members 340. Figure 6 , the abutting end of the clamping member 340 is provided with a first wedge surface 341, and the side of the carrier 320 is provided with a second wedge surface 321, and the first wedge surface 341 and the second wedge surface 321 are movably abutted. During the test, the target product will continue to generate vibrations, and the vibrations will be transmitted to the carrier 320 through the positioning platform 400, so that the carrier 320 and the clamping member 340 have a tendency to move relative to each other. The first wedge surface 341 abuts against the second wedge surface 321, which can limit the movement of the carrier 320 in the longitudinal direction and the horizontal direction, thereby improving the connection reliability between the carrier 320 and the clamping member 340. Moreover, compared with machining matching structures such as positioning holes and positioning grooves on the carrier 320, the design of the second wedge surface 321 can avoid the gap between the clamping member 340 and the carrier 320 caused by machining errors, resulting in unstable abutment.

[0068] It is worth noting that the abutment direction of the clamping member 340 is from the side of the carrier 320 to the center of the carrier 320, that is, the clamping member 340 applies a horizontal abutment force to the side of the carrier 320, thereby clamping the carrier 320 to prevent the carrier 320 from continuously applying pressure to the shock absorber 330 in a rigid connection state, otherwise the shock absorber 330 is prone to fatigue and the shock absorption effect is reduced.

[0069] S140, placing the displacement sensor 630 against the rotating shaft of the target product to detect shaft runout;

[0070] For example, please refer to Figure 4 , the displacement sensor 630 is connected to a second lifting drive 631. Considering the requirements of miniaturized design, the second lifting drive 631 is located above the positioning platform 400. For example, the motor testing equipment also includes a soundproof box. The first slide assembly and the second slide assembly are both installed in the soundproof box. The second lifting drive 631 is installed on the top of the soundproof box, which can save the layout space of the base 100, making the layout between the various mechanisms more compact and realizing miniaturized design. The second lifting drive 631 adopts a cylinder-driven structure to drive the displacement sensor 630 to perform lifting and lowering movements. For example, in the initial state, the displacement sensor 630 is located above the rotating shaft of the target product. When the shaft runout detection is required, the second lifting drive 631 drives the displacement sensor 630 to move downward so that the displacement sensor 630 abuts against the rotating shaft of the target product, thereby performing shaft runout detection on the target product through the displacement sensor 630.

[0071] S150, controlling the push assembly 120 to abut against the first slide 210, and driving the second slide 220 to move through the slide drive mechanism 221, so that the torque sensor 700 is connected to the rotating shaft of the target product, wherein the hysteresis brake 710 provides zero load;

[0072] For example, please refer to Figure 3 , Figure 4 and Figure 5, the first slide 210 and the second slide 220 are both connected to the first slide rail 110, and the second slide 220 is driven to move by the slide drive mechanism 221, so that the second slide 220 moves in the direction close to the first slide 210, the target product is installed on the positioning platform 400, and the rotation axis of the target product points to the torque sensor 700, and the torque sensor 700 is installed on the second slide 220, and the second slide 220 drives the torque sensor 700 to move synchronously in the direction close to the first slide 210, so that the torque sensor 700 can be connected to the rotation axis of the target product. It is worth mentioning that the second slide 220 and the push assembly 120 are distributed on the opposite sides of the first slide 210, and the push assembly 120 abuts against the first slide 210, providing a reverse force for the first slide 210, which can prevent the second slide 220 from driving the first slide 210 to move in the same direction. The hysteresis brake 710 is a torque control component using the hysteresis principle. Using the hysteresis principle, a certain torque can be generated by controlling the input excitation current. When the input current of the hysteresis brake 710 is zero, the output load of the hysteresis brake 710 is zero, that is, the torque sensor 700 only performs torque detection on the target product.

[0073] S160 , detecting torque through the torque sensor 700 , and / or detecting rotation speed through the photoelectric sensor 730 and the code wheel 720 .

[0074] For example, please refer to Figure 2 , Figure 3 and Figure 4 , the code disc 720 is mounted on the torque sensor 700, the target product drives the code disc 720 to rotate through the torque sensor 700, the code disc 720 is provided with light-transmitting parts and light-shielding parts arranged alternately, the code disc 720 triggers the detection signal of the photoelectric sensor 730 during the rotation process, and the rotation speed of the target product can be determined according to the number of signal triggers of the photoelectric sensor 730 per unit time. In actual applications, the test items can be selected according to actual needs, for example, the torque is detected by the torque sensor 700, or the rotation speed is detected by the photoelectric sensor 730 and the code disc 720, or the torque is detected by the torque sensor 700, and the rotation speed is also detected by the photoelectric sensor 730 and the code disc 720.

[0075] In this way, the audio collection component 610 can be used to continuously detect noise during the test process. The shock absorber 330 and at least two clamping members 340 can enable the intermediate platform 300 to switch between a flexible connection state and a rigid connection state to meet the test conditions under different working conditions. During the test, data can be collected through the audio collection component 610, the torque sensor 700, the photoelectric sensor 730, the accelerometer 620 and the displacement sensor 630, so that multiple functions of the motor can be continuously detected.

[0076] The above steps are various tests performed to simulate no-load conditions. In addition, the motor test method also includes:

[0077] S210, controlling the hysteresis brake 710 to provide a preset load;

[0078] S220 , detecting torque through the torque sensor 700 , and / or detecting rotation speed through the photoelectric sensor 730 and the code wheel 720 .

[0079] For example, after completing the test of the no-load condition, various tests are performed on the target product to simulate the load condition. By changing the input current of the hysteresis brake 710, the torque output by the hysteresis brake 710 can be changed, that is, different loads, such as light load and full load, are provided to the target product. By performing torque detection by the torque sensor 700, it can be determined whether the torque of the target product meets the requirements. In addition, by performing speed detection by the photoelectric sensor 730 and the code disk 720, the speed of the target product under the load condition can be detected. Among them, the torque detection and the speed detection can be selected or all tested according to the actual application requirements.

[0080] Step S220, detecting the torque by the torque sensor 700, and / or detecting the rotation speed by the photoelectric sensor 730 and the code disc 720, and then further comprising:

[0081] S230, controlling the intermediate carrier to switch to a flexible connection state, that is, controlling at least two clamping members 340 to separate from the carrier plate 320;

[0082] S240 , start and perform vibration detection on the target product through the accelerometer 620 .

[0083] Exemplarily, when vibration detection is performed on the target product under a simulated load condition, in order to improve the accuracy of the detection, at least two clamping members 340 are controlled to be separated from the carrier plate 320, so that the intermediate carrier 300 is switched to a flexible connection state, that is, the carrier plate 320 is connected to the bottom plate 310 through the shock absorber 330, and the shock absorber 330 isolates the vibration of the external environment. Since the accelerometer 620 always maintains contact with the target product, when the vibration detection of the simulated load condition is performed, the accelerometer 620 is started to collect signals to perform vibration detection on the target product. In the vibration detection process, the load output by the hysteresis brake 710 can be changed to achieve vibration detection under different load conditions.

[0084] Please refer to Figure 3 and Figure 7 A radial thrust mechanism 500 is installed on the first slide 210, and the radial thrust mechanism 500 is connected to a second pressure detection assembly 530. The motor testing method further includes:

[0085] S310, controlling the intermediate platform 300 to switch to a rigid connection state, and controlling the hysteresis brake 710 to provide zero load;

[0086] S320 , applying a preset radial thrust to the rotating shaft of the target product through the radial thrust mechanism 500 , and monitoring the radial thrust through the second pressure detection component 530 .

[0087] For example, after the test of the load condition is completed, the intermediate platform 300 is switched from the flexible connection state to the rigid connection state, that is, at least two clamping members 340 are controlled to abut against the carrier plate 320, so as to simulate the radial thrust condition of the target product. The hysteresis brake 710 provides zero load to cancel the load applied to the target product. Figure 7 , the radial thrust mechanism 500 includes a push block 510 and a first lifting drive member 520, the first lifting drive member 520 adopts a cylinder driven structure, the push block 510 is connected to the first lifting drive member 520, an elastic member 511 is connected between the push block 510 and the first lifting drive member 520, and the push block 510 is movably abutted against the second pressure detection assembly 530. For example, the push block 510 is located below the adjacent side of the positioning platform 400, and the push block 510 is driven by the first lifting drive member 520 to abut against the rotating shaft of the target product from bottom to top. During the abutment process, the push block 510 compresses the elastic member 511 to achieve flexible contact with the rotating shaft of the target product to prevent hard contact from causing damage to the target product. At the same time, the push block 510 abuts against the second pressure detection assembly 530 to monitor the radial thrust applied to the target product in real time through the second pressure detection assembly 530, so as to facilitate various tests of the target product under the working condition of being subjected to the preset radial thrust.

[0088] In some application examples, step S320, applying a preset radial thrust to the rotating shaft of the target product through the radial thrust mechanism 500, and monitoring the radial thrust through the second pressure detection component 530, further includes at least one of the following:

[0089] S330, detecting torque through the torque sensor 700;

[0090] S340, detecting the rotation speed through the photoelectric sensor 730 and the code disk 720;

[0091] S350 , detecting shaft runout through the displacement sensor 630 .

[0092] For example, according to different test requirements, the target product can be tested for torque and speed, and shaft runout under the condition of simulating the radial force of the target product. The noise detection is carried out during the whole test process.

[0093] Please refer to Figure 2 A first pressure detection assembly 130 is further disposed on the adjacent side of the first slide assembly. Specifically, the first pressure detection assembly 130 is disposed on the adjacent side of the first slide 210. The motor testing method further includes:

[0094] S410, controlling the radial thrust mechanism 500 to reset;

[0095] S420, controlling the push assembly 120 to retract to separate from the first slide 210;

[0096] S430, driving the second slide 220 to move through the slide drive mechanism 221 to apply axial thrust to the target product through the torque sensor 700, so that the first slide assembly abuts against the first pressure detection assembly 130, and the axial thrust is monitored through the first pressure detection assembly 130.

[0097] Exemplarily, after completing the test of simulating radial force conditions, the radial thrust mechanism 500 is controlled to reset, and the push assembly 120 is controlled to retract, and the push assembly 120 is separated from the first slide 210 to avoid the moving space of the first slide 210. The slide drive mechanism 221 drives the second slide 220 to move. Since the torque sensor 700 is connected to the rotating shaft of the target product and the intermediate platform 300 is in a rigid connection state, the torque sensor 700 can apply axial thrust to the target product during the movement, and the target product can drive the first slide 210 to move synchronously until the first slide assembly abuts against the first pressure detection assembly 130, and the axial thrust is monitored through the first pressure detection assembly 130. According to the different installation heights of the first pressure detection assembly 130, the first slide 210, the intermediate platform 300, the positioning platform 400 and one of the target product are movably abutted against the first pressure detection assembly 130. For example, if the installation height of the first pressure detection assembly 130 is adapted to the first slide 210, the first slide 210 can abut against the first pressure detection assembly 130 during movement; for another example, if the installation height of the first pressure detection assembly 130 is adapted to the target product, during the movement of the first slide 210, the target product moves synchronously with the first slide 210, thereby abutting against the first pressure detection assembly 130. In this way, the working condition of the target product being subjected to axial thrust can be simulated.

[0098] In some application examples, step S430, the second slide 220 is driven to move by the slide drive mechanism 221 to apply an axial thrust to the target product through the torque sensor 700, so that the first slide assembly abuts against the first pressure detection assembly 130, and the axial thrust is monitored by the first pressure detection assembly 130, and then at least one of the following is included:

[0099] S440, detecting torque through the torque sensor 700;

[0100] S450, detecting the rotation speed through the photoelectric sensor 730 and the code disk 720;

[0101] S460 , detecting shaft runout through the displacement sensor 630 .

[0102] For example, according to different test requirements, the target product can be tested for torque and speed, and shaft runout under the condition of simulating the target product being subjected to axial force. Noise detection is performed throughout the test process.

[0103] Motor testing methods also include:

[0104] S510, driving the second slide 220 to reset by the slide drive mechanism 221, so as to separate the torque sensor 700 from the rotating shaft of the target product;

[0105] S520, controlling the pushing assembly 120 to abut against the first slide 210 to push the first slide 210 to the initial position.

[0106] Exemplarily, after completing all test items, the second slide 220 is reset, the torque sensor 700 is separated from the rotating shaft of the target product, the thrust applied to the target product is cancelled, and the pushing assembly 120 extends and abuts the first slide 210 to push the first slide 210 to the initial position, thereby returning the target product to the initial position to facilitate unloading of the target product.

[0107] This embodiment can automatically and continuously perform no-load testing, load testing, radial force testing and axial force testing on the target product. It has a high degree of automation and can perform multiple tests for different working conditions. During the test, there is no need to transfer the target product between different devices. The operation is simple, which saves transfer time and helps to improve test efficiency.

[0108] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A motor testing method, applied to a motor testing device, characterized in that: include: Mounting a target product on a positioning platform (400) and providing a forward or reverse excitation signal to the target product, wherein the positioning platform (400) is mounted on an intermediate platform (300), the intermediate platform (300) is mounted on a first slide platform (210), and the intermediate platform (300) is in a flexible connection state; Starting the audio collection component (610) to detect noise, and placing the accelerometer (620) in contact with the target product to detect vibration, wherein the audio collection component (610) and the accelerometer (620) are both mounted on the peripheral side of the positioning platform (400); Controlling the accelerometer (620) to stop vibration detection, and controlling the intermediate platform (300) to switch to a rigid connection state; A displacement sensor (630) is abutted against the rotation axis of the target product to detect axis runout, the displacement sensor (630) being arranged on the peripheral side of the positioning platform (400); Controlling the push assembly (120) to abut against the first slide (210), and driving the second slide (220) to move through a slide drive mechanism (221), so that the torque sensor (700) is connected to the rotation axis of the target product, the slide drive mechanism (221) is connected to the second slide (220), the second slide (220) and the first slide (210) are installed on the same slide rail, and the second slide (220) and the push assembly (120) are distributed on opposite sides of the first slide (210), the torque sensor (700) is installed on the second slide (220) and is connected to a hysteresis brake (710), and the hysteresis brake (710) provides zero load; The torque is detected by the torque sensor (700), and the rotation speed is detected by the photoelectric sensor (730) and the code disk (720); the code disk (720) is connected to the torque sensor (700), and the photoelectric sensor (730) is arranged on the adjacent side of the code disk (720) and facing the code disk (720).

2. The motor testing method according to claim 1, characterized in that: The motor testing method further comprises: Controlling the hysteresis brake (710) to provide a preset load; The torque is detected by the torque sensor (700), and the rotation speed is detected by the photoelectric sensor (730) and the code disc (720).

3. The motor testing method according to claim 2, characterized in that: The torque is detected by the torque sensor (700), and the rotation speed is detected by the photoelectric sensor (730) and the code disk (720), and then further comprises: Controlling the intermediate carrier (300) to switch to a flexible connection state; The target product is started and vibration detection is performed on the target product through the accelerometer (620).

4. The motor testing method according to claim 3, characterized in that: A radial thrust mechanism (500) is installed on the first slide table (210), and the radial thrust mechanism (500) is connected to a second pressure detection component (530). The motor testing method further comprises: Controlling the intermediate carrier (300) to switch to a rigid connection state, and controlling the hysteresis brake (710) to provide zero load; A preset radial thrust is applied to the rotating shaft of the target product through the radial thrust mechanism (500), and radial thrust monitoring is performed through the second pressure detection component (530).

5. The motor testing method according to claim 4, characterized in that: The method further comprises applying a preset radial thrust to the rotating shaft of the target product through the radial thrust mechanism (500), and monitoring the radial thrust through the second pressure detection component (530), and then further comprising at least one of the following: Detecting torque via the torque sensor (700); Detecting the rotation speed by means of the photoelectric sensor (730) and the code disc (720); The shaft runout is detected by the displacement sensor (630).

6. The motor testing method according to claim 5, characterized in that: A first pressure detection component (130) is also provided on the adjacent side of the first slide table (210), and the motor testing method further comprises: Controlling the radial thrust mechanism (500) to reset; Controlling the push assembly (120) to retract so as to disengage from the first slide table (210); The second slide (220) is driven to move by the slide drive mechanism (221) to apply an axial thrust to the target product through the torque sensor (700), so that the first slide (210), the intermediate platform (300), the positioning platform (400) and one of the target products are abutted against the first pressure detection component (130), and the axial thrust is monitored by the first pressure detection component (130).

7. The motor testing method according to claim 6, characterized in that: The second slide (220) is driven to move by the slide drive mechanism (221) so as to apply an axial thrust to the target product through the torque sensor (700), so that the first slide (210), the intermediate platform (300), the positioning platform (400) and one of the target product abut against the first pressure detection component (130), and the axial thrust is monitored by the first pressure detection component (130), and then at least one of the following is further included: Detecting torque via the torque sensor (700); Detecting the rotation speed by means of the photoelectric sensor (730) and the code disc (720); The shaft runout is detected by the displacement sensor (630).

8. The motor testing method according to claim 7, characterized in that: The motor testing method further comprises: driving the second slide table (220) to reset by means of the slide table driving mechanism (221), so as to separate the torque sensor (700) from the rotating shaft of the target product; The pushing component (120) is controlled to abut against the first slide table (210) so as to push the first slide table (210) to an initial position.

9. The motor testing method according to any one of claims 1 to 8, characterized in that: The intermediate platform (300) comprises a bottom plate (310), a carrier plate (320), a shock absorbing member (330) and at least two clamping members (340), the bottom plate (310) being connected to the first slide platform (210), the carrier plate (320) being connected to the positioning platform (400), and the control of switching the intermediate platform (300) to a rigid connection state comprises: The at least two clamping members (340) are controlled to abut against the side of the carrier plate.

10. The motor testing method according to any one of claims 3 to 8, characterized in that: The intermediate platform (300) comprises a bottom plate (310), a carrier plate (320), a shock absorbing member (330) and at least two clamping members (340), the bottom plate (310) being connected to the first slide platform (210), the carrier plate (320) being connected to the positioning platform (400), and the control of switching the intermediate platform (300) to a flexible connection state comprises: The at least two clamping members (340) are controlled to be separated from the carrier plate.

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