Motor No-Load and Radial Force Test Method

Abstract

The present invention discloses a method for testing a motor under no-load and radial force conditions, which includes installing a target product on a positioning stage, providing a forward or reverse excitation signal to the target product, and the intermediate stage being in a flexible connection state; starting an audio acquisition component to detect noise, and abutting an accelerometer against the target product to detect vibration; controlling the accelerometer to stop vibration detection, and controlling the intermediate stage to switch to a rigid connection state; applying a preset radial thrust to the rotating shaft of the target product through a radial thrust mechanism, and monitoring the radial thrust through a second pressure detection component, the radial thrust mechanism being installed on a first slide table and located adjacent to the positioning stage and connected to the second pressure detection component. The present invention can switch between no-load working conditions and radial force working conditions, so as to facilitate continuous testing of multiple functions.

Description

Technical Field

[0001] The present invention relates to the technical field of automated testing, and particularly to a method for testing the no-load and radial force of an electric motor. Background Art

[0002] An electric motor (also known as a motor) is a common power device. With the development of technology, small electric motors are increasingly widely used, and are commonly found in household appliances and 3C products, etc. To ensure the production quality of electric motors, quality tests need to be carried out before leaving the factory. However, the test items that can be performed by the test equipment in the related technology are few, the integration degree is not high, and the working conditions simulated between different test items are different. If multiple tests are to be carried out, multiple different devices need to be used for collaborative testing, and it takes time for the target product to be transferred between different devices, making it difficult to perform continuous tests on multiple functions of the electric motor. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a method for testing the no-load and radial force of an electric motor, which can switch between the no-load working condition and the radial force working condition to facilitate the implementation of continuous tests of multiple functions.

[0004] On the one hand, an embodiment of the present invention provides a method for testing the no-load and radial force of an electric motor, which is applied to an electric motor test device and includes:

[0005] Install the target product on the positioning carrier, and provide a forward or reverse excitation signal to the target product. The positioning carrier is installed on the intermediate carrier, the intermediate carrier is installed on the first sliding table, and the intermediate carrier is in a flexible connection state;

[0006] Start the audio acquisition component to detect noise, and abut the accelerometer against the target product to detect vibration. The audio acquisition component and the accelerometer are both installed on the periphery of the positioning carrier;

[0007] Control the accelerometer to stop vibration detection, and control the intermediate carrier to switch to a rigid connection state;

[0008] Apply a preset radial thrust to the rotating shaft of the target product through the radial thrust mechanism, and monitor the radial thrust through the second pressure detection component. The radial thrust mechanism is installed on the first sliding table and is adjacent to the positioning carrier and is connected to the second pressure detection component.

[0009] According to some embodiments of the present invention, before and / or after applying a preset radial thrust to the rotating shaft of the target product through the radial thrust mechanism and monitoring the radial thrust through the second pressure detection component, it further includes:

[0010] The displacement sensor is abutted against the rotating shaft of the target product to detect shaft yaw, and the displacement sensor is arranged on the periphery of the positioning stage.

[0011] According to some embodiments of the present invention, before and / or after applying a preset radial thrust to the rotating shaft of the target product through the radial thrust mechanism and monitoring the radial thrust through the second pressure detection component, it further includes:

[0012] Controlling the pushing component to abut against the first sliding table, driving the second sliding table to move through the sliding table driving mechanism, so that the torque sensor is connected to the rotating shaft of the target product. The sliding table driving mechanism is connected to the second sliding table. The second sliding table and the first sliding table are installed on the same slide rail, and the second sliding table and the pushing component are distributed on opposite sides of the first sliding table. The torque sensor is installed on the second sliding table.

[0013] According to some embodiments of the present invention, after controlling the pushing component to abut against the first sliding table and driving the second sliding table to move through the sliding table driving mechanism so that the torque sensor is connected to the rotating shaft of the target product, it further includes:

[0014] Detecting torque through the torque sensor, and / or detecting rotational speed through the photoelectric sensor and the code disc. The code disc is connected to the torque sensor, and the photoelectric sensor is arranged adjacent to the code disc and faces the code disc.

[0015] According to some embodiments of the present invention, the intermediate stage includes a bottom plate, a carrier plate, a shock absorber, and at least two clamping components. The bottom plate is connected to the first sliding table, and the carrier plate is connected to the positioning stage. Controlling the intermediate stage to switch to a rigid connection state includes: controlling the at least two clamping components to abut against the side of the carrier plate.

[0016] On the other hand, an embodiment of the present invention provides a method for testing the no-load and radial force of a motor, which is applied to a motor testing device and includes:

[0017] Installing the target product on the positioning stage and providing a forward or reverse excitation signal to the target product. The positioning stage is installed on the intermediate stage, and the intermediate stage is installed on the first sliding table. The intermediate stage is in a rigid connection state;

[0018] Starting the audio acquisition component to detect noise;

[0019] Applying a preset radial thrust to the rotating shaft of the target product through the radial thrust mechanism and monitoring the radial thrust through the second pressure detection component. The radial thrust mechanism is installed on the first sliding table, adjacent to the positioning stage, and connected to the second pressure detection component;

[0020] Control the radial thrust mechanism to reset;

[0021] Control the intermediate stage to switch to a flexible connection state, and abut the accelerometer against the target product to detect vibration. Both the audio acquisition component and the accelerometer are installed on the periphery of the positioning stage.

[0022] According to some embodiments of the present invention, before controlling the radial thrust mechanism to reset, it further includes:

[0023] Abut the displacement sensor against the rotating shaft of the target product to detect shaft yaw. The displacement sensor is arranged on the periphery of the positioning stage.

[0024] According to some embodiments of the present invention, before controlling the radial thrust mechanism to reset, it further includes:

[0025] Control the pushing component to abut against the first slide table, and drive the second slide table to move through the slide table driving mechanism, so that the torque sensor is connected to the rotating shaft of the target product. The slide table driving mechanism is connected to the second slide table. The second slide table and the first slide table are installed on the same slide rail, and the second slide table and the pushing component are distributed on opposite sides of the first slide table. The torque sensor is installed on the second slide table;

[0026] Detect torque through the torque sensor, and / or detect rotational speed through the photoelectric sensor and the code disk; the code disk is connected to the torque sensor, and the photoelectric sensor is arranged adjacent to the code disk and faces the code disk.

[0027] According to some embodiments of the present invention, after controlling the intermediate stage to switch to a flexible connection state and abutting the accelerometer against the target product to detect vibration, it further includes:

[0028] Control the intermediate stage to switch to a rigid connection state, and abut the displacement sensor against the rotating shaft of the target product to detect shaft yaw. The displacement sensor is arranged on the periphery of the positioning stage.

[0029] According to some embodiments of the present invention, after controlling the intermediate stage to switch to a flexible connection state and abutting the accelerometer against the target product to detect vibration, it further includes:

[0030] Control the intermediate stage to switch to a rigid connection state;

[0031] The control jacking assembly abuts against the first sliding table, and the second sliding table is driven to move by a sliding table driving mechanism so that the torque sensor is connected to the rotating shaft of the target product. The sliding table driving mechanism is connected to the second sliding table. The second sliding table and the first sliding table are installed on the same slide rail, and the second sliding table and the jacking assembly are distributed on opposite sides of the first sliding table. The torque sensor is installed on the second sliding table;

[0032] The torque is detected by the torque sensor, and / or the rotational speed is detected by a photoelectric sensor and a code disk. The code disk is connected to the torque sensor, and the photoelectric sensor is arranged adjacent to the code disk and faces the code disk.

[0033] The embodiments of the present invention have at least the following beneficial effects:

[0034] The audio acquisition component can perform continuous noise detection on the test process. The intermediate carrier table can be switched between flexible connection and rigid connection to meet the test conditions under different working conditions. The radial thrust mechanism is used to realize the switching between no-load and radial force-bearing working conditions. During the test process, data can be collected by the audio acquisition component and the accelerometer, and multiple functions of the motor can be continuously detected.

[0035] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0036] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0037] Figure 1 is one of the step flowcharts of the no-load and radial force-bearing test method for the motor according to the embodiment of the present invention;

[0038] Figure 2 is one of the structural schematic diagrams of the motor test equipment according to the embodiment of the present invention;

[0039] Figure 3 is the second structural schematic diagram of the motor test equipment according to the embodiment of the present invention;

[0040] Figure 4 is the third structural schematic diagram of the motor test equipment according to the embodiment of the present invention;

[0041] Figure 5 is Figure 2 the structural schematic diagram of the intermediate carrier table and the positioning carrier table of the motor test equipment shown;

[0042] Figure 6 is Figure 5Exploded structural schematic diagram of the shown intermediate stage and positioning stage;

[0043] Figure 7 is Figure 3 Partial enlarged view of the position A circled in the figure;

[0044] Figure 8 It is the second step flowchart of the no-load and radial force test method of the motor in the embodiment of the present invention.

[0045] Reference numerals:

[0046] Base 100, first slide rail 110, pushing assembly 120, first slide 210, second slide 220, slide driving mechanism 221, intermediate stage 300, bottom plate 310, carrier plate 320, second wedge surface 321, shock absorber 330, clamping member 340, first wedge surface 341, positioning stage 400, positioning block 410, positioning cavity 411, avoidance position 412, first clamping block 420, second clamping block 430, double-acting cylinder 440, radial thrust mechanism 500, push block 510, elastic member 511, first rolling member 512, second rolling member 513, first lifting driving member 520, second pressure detection assembly 530, audio acquisition assembly 610, accelerometer 620, lifting and rotating mechanism 621, displacement sensor 630, second lifting driving member 631, torque sensor 700, code disk 720, photoelectric sensor 730. Detailed implementation manners

[0047] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0048] In the description of the present invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 construed as a limitation of the present invention.

[0049] In the description of the present invention, "several" means one or more, "multiple" means more than two. Understanding "greater than", "less than", "exceeding", etc. as not including the corresponding number, and understanding "above", "below", "within", etc. as including the corresponding number. If there is a description of "first", "second", etc., it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features or implicitly specifying the sequence relationship of the indicated technical features.

[0050] In the description of the present invention, unless otherwise clearly defined, terms such as "arranged", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0051] Please refer to Figure 1 , this embodiment discloses a method for testing the no-load and radial force of a motor, which is applied to a motor testing device. To facilitate the understanding of the motor testing method of this embodiment, the structure of the motor testing device will be described first below.

[0052] Please refer to Figure 2 、 Figure 3 and Figure 4, the motor test equipment includes a first sliding table assembly and a second sliding table assembly installed on the same sliding rail. Exemplarily, a first sliding rail 110 is installed on the base 100, and both the first sliding table assembly and the second sliding table assembly are slidably installed on the first sliding rail 110. For example, the first sliding table assembly includes a first sliding table 210, an intermediate carrier 300, and a positioning carrier 400, and the second sliding table assembly includes a second sliding table 220, a torque sensor 700, a code disk 720, and a photoelectric sensor 730. Both the first sliding table 210 and the second sliding table 220 are slidably installed on the first sliding rail 110. The intermediate carrier 300 is installed on the first sliding table 210. The intermediate carrier 300 includes a bottom plate 310, a carrier plate 320, a shock absorber 330, and at least two clamping members 340. The bottom plate 310 is connected to the first sliding table 210, and the shock absorber 330 is connected between the bottom plate 310 and the carrier plate 320. The shock absorber 330 can adopt structures such as urethane rubber, shock-absorbing silica gel, or shock-absorbing springs. The clamping member 340 is a structure driven by a cylinder. At least two clamping members 340 are installed on the bottom plate 310 and are distributed on opposite sides of the carrier plate 320. The positioning carrier 400 is installed on the carrier plate 320, and the positioning carrier 400 is used to carry the target product. A pushing assembly 120 is arranged adjacent to the first sliding table assembly. Specifically, the pushing assembly 120 is installed on the base 100 and is located adjacent to the first sliding table 210. An audio acquisition assembly 610, an accelerometer 620, and a displacement sensor 630 are arranged on the periphery of the positioning carrier 400. The audio acquisition assembly 610 uses a microphone. The second sliding table 220 is connected to a sliding table drive mechanism 221. The sliding table drive mechanism 221 adopts a combination of a lead screw and a motor. The torque sensor 700 is installed on the second sliding table 220. The torque sensor 700 is connected to the code disk 720. The photoelectric sensor 730 is arranged adjacent to the code disk 720, and the detection end of the photoelectric sensor 730 faces the code disk 720.

[0053] In this embodiment, a small motor is used as the target product. The size of the small motor is small. Correspondingly, the volume of the motor test equipment in this embodiment is also small. To meet the requirements of miniaturized design, the structural arrangement between the various components of the motor test equipment is compact. For example, both the intermediate carrier 300 and the positioning carrier 400 are arranged on the first sliding table 210, and the torque sensor 700, the code disk 720, and the photoelectric sensor 730 are all arranged on the second sliding table 220. Among them, the pushing assembly 120, the audio acquisition assembly 610, the accelerometer 620, and the displacement sensor 630 are distributed around the first sliding table assembly. Adopting a modular structural layout, the layout is clear and compact, with high integration and being convenient for debugging and maintenance.

[0054] The test items of the small motor include no-load test and radial 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 certain forces will be applied to the target product during the test process of the remaining test items, requiring the target product to be placed stably. Based on this, an intermediate stage 300 is added between the first slide 210 and the positioning stage 400 in this embodiment. The intermediate stage 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 process. For example, when the clamping member 340 does not abut against the carrier plate 320, the carrier plate 320 is connected to the bottom plate 310 through the shock absorber 330. Since the shock absorber 330 has a shock absorption effect, it can isolate the vibration of the external environment transmitted through the first slide 210, thereby improving the accuracy of the test; when the clamping member 340 abuts against the side of the carrier plate 320, a rigid connection relationship is formed among the carrier plate 320, the clamping member 340, and the bottom plate 310, making the connection between the carrier plate 320 and the bottom plate 310 reliable, thereby improving the placement stability of the target product. It is worth mentioning that the clamping member 340 abuts and clamps the side of the carrier plate 320, which can avoid the carrier plate 320 continuously applying pressure to the shock absorber 330 while clamping the carrier plate 320, reducing the fatigue degree of the shock absorber 330, and being beneficial to improving the durability and shock absorption reliability of the shock absorber 330. Among them, the number of the clamping members 340 can be determined according to the actual application situation, such as two or four, etc. Every two clamping members 340 form a group and abut from the opposite sides of the carrier plate 320 respectively.

[0055] The no-load and radial force test method of the motor includes steps S110 to S140. It should be noted that the step numbers in this embodiment are only for the convenience of review and understanding, rather than limiting the execution order of the steps. The content of each step is described in detail below:

[0056] S110. Install the target product on the positioning stage 400, and provide a forward or reverse excitation signal to the target product, and the intermediate stage 300 is in a flexible connection state;

[0057] Exemplarily, please refer to Figure 5 and Figure 6, the positioning stage 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 for placing the target product. Avoidance positions 412 are provided on 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 double-acting cylinder 440. The double-acting cylinder 440 is used to drive the first clamping block 420 and the second clamping block 430 to move towards or away from each other, so as to clamp or release the target product. Among them, by providing the avoidance positions 412 on the positioning block 410, the relative height of the first clamping block 420 and the second clamping block 430 can be reduced, which is beneficial to realizing miniaturized design. By using the double-acting cylinder 440 to drive the first clamping block 420 and the second clamping block 430, not only can the number of cylinders be saved to meet the requirements of miniaturized design, but also the pressure applied to the carrier plate 320 can be reduced, which can improve the shock absorption effect of the intermediate stage 300 to a certain extent, and can also improve the movement synchronization performance of the first clamping block 420 and the second clamping block 430, so that the target product can be kept at the preset center position. Among them, the double-acting cylinder 440 is installed at the bottom of the positioning block 410 and is connected to the carrier plate 320. By arranging the double-acting cylinder 440 between the positioning block 410 and the carrier plate 320, the positioning block 410 can be supported by the double-acting cylinder 440, and the center of gravity of the double-acting cylinder 440 and the positioning block 410 can be kept on the same or similar longitudinal straight line, which is beneficial to ensuring the uniform force on the carrier plate 320 at each position, avoiding excessive force on one side, and is beneficial to improving the shock absorption effect.

[0058] S120. Start the audio acquisition component 610 to detect noise, and abut the accelerometer 620 against the target product to detect vibration;

[0059] Exemplarily, during the test, continuous noise detection is performed through the audio acquisition component 610. To improve the accuracy of detection, the motor test equipment further includes a soundproof box. Both the first sliding table component and the second sliding table component are installed in the soundproof box, so as to reduce the interference of environmental noise. Please refer to Figure 4, the accelerometer 620 is connected to a lifting and rotating mechanism 621. The lifting and rotating mechanism 621 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 a first working position and a second working position. The first working position and the second working position are located on 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 an axis and descend to switch from the second working position to the first working position. Wherein, 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 stage 400, which can avoid the placement trajectory of the target product and is beneficial to installing the target product on the positioning stage 400.

[0060] S130. Control the accelerometer 620 to stop vibration detection, and control the intermediate stage 300 to switch to a rigid connection state, that is, abut against the side of the carrier plate 320 through at least the clamping member 340;

[0061] Exemplarily, after the vibration detection is completed, control the accelerometer 620 to stop signal acquisition, that is, stop vibration detection. Abut against the side of the carrier plate 320 through at least two clamping members 340 to make the intermediate stage 300 switch to a rigid connection state, that is, the carrier plate 320 is connected to the bottom plate 310 through the clamping member 340. Among them, please refer to Figure 5 and Figure 6 , the abutting end of the clamping member 340 is provided with a first wedge surface 341, and the side of the carrier plate 320 is provided with a second wedge surface 321. The first wedge surface 341 and the second wedge surface 321 are in movable abutment. During the test, the target product will continuously generate vibration, and conduct the vibration to the carrier plate 320 through the positioning stage 400, so that there is a tendency of relative movement between the carrier plate 320 and the clamping member 340. The first wedge surface 341 abuts against the second wedge surface 321, which can limit the movement of the carrier plate 320 in the longitudinal direction and the horizontal direction, thereby improving the connection reliability between the carrier plate 320 and the clamping member 340. Moreover, compared with machining mating structures such as positioning holes and positioning grooves on the carrier plate 320, the design of the second wedge surface 321 can avoid the gap between the clamping member 340 and the carrier plate 320 caused by machining errors, resulting in unstable abutment.

[0062] It should be noted that the abutting direction of the clamping member 340 is from the side of the carrier plate 320 towards the center of the carrier plate 320, that is, the clamping member 340 applies a horizontal abutting force to the side of the carrier plate 320, thereby clamping the carrier plate 320 and preventing the carrier plate 320 from continuously applying pressure to the shock absorber 330 in the rigid connection state. Otherwise, the shock absorber 330 is prone to fatigue and the shock absorption effect is reduced.

[0063] S140. Apply a preset radial thrust to the rotating shaft of the target product through the radial thrust mechanism 500, and monitor the radial thrust through the second pressure detection component 530.

[0064] Exemplarily, please refer to 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 drive type 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. The push block 510 is movably abutted against the second pressure detection component 530. For example, the push block 510 is located below the adjacent side of the positioning stage 400. 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 abutting process, the push block 510 compresses the elastic member 511 to achieve flexible contact with the rotating shaft of the target product and prevent damage to the target product caused by hard contact. At the same time, the push block 510 abuts against the second pressure detection component 530 to monitor the radial thrust applied to the target product in real time through the second pressure detection component 530, so as to facilitate various tests on the target product under the condition of being subjected to a preset radial thrust.

[0065] In this way, the audio acquisition component 610 can continuously detect the noise during the test process. The intermediate stage 300 can be switched between flexible connection and rigid connection to meet the test conditions under different working conditions. The radial thrust mechanism 500 is used to switch between no-load and radial force-bearing working conditions. During the test process, data can be collected through the audio acquisition component 610 and the accelerometer 620, and multiple functions of the motor can be continuously detected.

[0066] Before and / or after step S140 of 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, it further includes: abutting the displacement sensor 630 against the rotating shaft of the target product to detect shaft yaw.

[0067] Exemplarily, according to different test requirements, the shaft yaw detection of the target product can be performed under both the simulated no-load condition and the radial force condition. Before step S140, the no-load condition of the target product is simulated, and after step S140, the radial force condition of the target product is simulated. If the shaft yaw detection is not performed under the no-load condition, the displacement sensor 630 is controlled to move and abutted against the rotating shaft of the target product to perform the shaft yaw detection. For example, please refer to Figure 3 or Figure 4 , the displacement sensor 630 is connected to a second lifting drive member 631 and can move up and down under the drive of the second lifting drive member 631 to abut against the rotating shaft of the target product. Considering the requirements of miniaturized design, the second lifting drive member 631 is arranged above the positioning stage 400; if the shaft yaw detection has been performed under the no-load condition, that is, the displacement sensor 630 has abutted against the rotating shaft of the target product, the displacement sensor 630 can be started to perform the shaft yaw detection.

[0068] Step S140: Apply a preset radial thrust to the rotating shaft of the target product through the radial thrust mechanism 500, and monitor the radial thrust through the second pressure detection component 530. Before and / or after that, it further includes: controlling the pushing component 120 to abut against the first sliding table 210, and driving the second sliding table 220 to move through the sliding table drive mechanism 221 so that the torque sensor 700 is connected to the rotating shaft of the target product.

[0069] Exemplarily, please refer to Figure 3 , Figure 4 and Figure 5 , both the first sliding table 210 and the second sliding table 220 are connected to the first slide rail 110. By driving the second sliding table 220 to move through the sliding table drive mechanism 221, the second sliding table 220 moves towards the direction close to the first sliding table 210. The target product is installed on the positioning stage 400, and the rotating shaft of the target product points to the torque sensor 700, while the torque sensor 700 is installed on the second sliding table 220. The second sliding table 220 drives the torque sensor 700 to move synchronously towards the direction close to the first sliding table 210, which can connect the torque sensor 700 to the rotating shaft of the target product. It is worth mentioning that the second sliding table 220 and the pushing component 120 are distributed on opposite sides of the first sliding table 210. The pushing component 120 abuts against the first sliding table 210 and provides a reverse force for the first sliding table 210, which can prevent the second sliding table 220 from driving the first sliding table 210 to move in the same direction.

[0070] In addition, the pushing component 120 is controlled to abut against the first sliding table 210, and the second sliding table 220 is driven to move by the sliding table driving mechanism 221 so that the torque sensor 700 is connected to the rotating shaft of the target product. After that, it further includes: detecting the torque through the torque sensor 700, and / or detecting the rotational speed through the photoelectric sensor 730 and the code disk 720.

[0071] Exemplarily, the code disk 720 is installed on the torque sensor 700, and the target product drives the code disk 720 to rotate through the torque sensor 700. The code disk 720 is provided with light-transmitting portions and light-blocking portions arranged at intervals. During the rotation of the code disk 720, the detection signal of the photoelectric sensor 730 is triggered. According to the number of signal triggers of the photoelectric sensor 730 per unit time, the rotational speed of the target product can be determined. In practical applications, the test items can be selected according to actual needs. For example, the torque is detected through the torque sensor 700, or the rotational speed is detected through the photoelectric sensor 730 and the code disk 720, or the torque is detected through the torque sensor 700, and the rotational speed is also detected through the photoelectric sensor 730 and the code disk 720.

[0072] The above embodiments are the embodiments in which the motor test equipment starts testing from the no-load condition and then switches to the radial force condition test. The following also provides a method for testing the no-load and radial force of a motor, which is an embodiment in which the motor test equipment starts testing from the radial force condition and then switches to the no-load condition test. Among them, the structure of the motor test equipment can be referred to above and will not be elaborated here.

[0073] Please refer to Figure 8 This embodiment provides a method for testing the no-load and radial force of a motor, which is applied to a motor test equipment and includes S210~S250. It should be noted that the steps of this embodiment are numbered only for the convenience of review and understanding, rather than limiting the execution order of the steps. The following will be referred to together Figures 2 to 7 The content of each step will be described in detail:

[0074] S210. Install the target product on the positioning stage 400 and provide a forward or reverse excitation signal to the target product, and the intermediate stage 300 is in a rigid connection state;

[0075] Exemplarily, different from the above application example, before starting the test, the intermediate stage 300 is in a rigid connection state, that is, at least two clamping members 340 abut against the side of the carrier plate 320, so that the carrier plate 320 is connected to the bottom plate 310 through the clamping members 340. In the rigid connection state, the target product is placed stably, which is convenient for subsequent connection with the torque sensor 700.

[0076] S220. Start the audio acquisition component 610 to detect noise;

[0077] Exemplarily, during the test, the audio acquisition component 610 continuously detects the noise of the target product. To improve the detection accuracy, the motor test equipment further includes a soundproof box, and both the first sliding table component and the second sliding table component are installed in the soundproof box to reduce the interference of environmental noise.

[0078] S230. Apply a preset radial thrust to the rotating shaft of the target product through the radial thrust mechanism 500, and monitor the radial thrust through the second pressure detection component 530;

[0079] Exemplarily, please refer to Figure 3 and 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 drive 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. The push block 510 is movably abutted against the second pressure detection component 530. For example, the push block 510 is located below the adjacent side of the positioning stage 400. The push block 510 is provided with a first rolling member 512 and a second rolling member 513. A clamping gap adapted to the rotating shaft of the target product is formed between the first rolling member 512 and the second rolling member 513. 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 upward movement of the push block 510, when the first rolling member 512 and the second rolling member 513 abut against the rotating shaft of the target product, the first rolling member 512 and the second rolling member 513 rotate towards each other to clamp the rotating shaft of the target product into the clamping gap. During this process, static friction is transformed into rolling friction, reducing damage to the target product. Moreover, the rotating shaft of the target product is located in the clamping gap, which can maintain good contact between the push block 510 and the target product. During the abutting process, the push block 510 compresses the elastic member 511 to achieve flexible contact with the rotating shaft of the target product and prevent damage to the target product caused by hard contact. At the same time, the push block 510 abuts against the second pressure detection component 530 to monitor the radial thrust applied to the target product in real time through the second pressure detection component 530, so as to facilitate various tests on the target product under the condition of receiving a preset radial thrust. Among them, during the process of the radial thrust mechanism 500 applying a radial thrust to the rotating shaft of the target product, the audio acquisition component 610 can collect the sound signal emitted by the target product during the test to facilitate detecting whether there is abnormal noise in the target product during the process of receiving the radial thrust. It is worth mentioning that the thrust applied by the radial thrust mechanism 500 to the target product can be monitored according to the second pressure detection component 530, so as to adjust the radial thrust more accurately and improve the test accuracy.

[0080] S240. Control the radial thrust mechanism 500 to reset;

[0081] Exemplarily, after the test of the radial force condition is completed, control the radial thrust mechanism 500 to reset. For example, drive the push block 510 to move downward through the first lifting drive member 520, so as to cancel the radial thrust applied to the target workpiece.

[0082] S250. Control the intermediate stage 300 to switch to the flexible connection state, and abut the accelerometer 620 against the target product to detect vibration.

[0083] Exemplarily, in order to reduce the influence of external environmental factors, control the intermediate stage 300 to switch to the flexible connection state, that is, the clamping member 340 is separated from the carrier plate 320, and the carrier plate 320 is connected to the bottom plate 310 through the shock absorber 330. The shock absorber 330 has a shock absorption function and can isolate the external vibration conducted through the first sliding table 210. In order to make full use of the layout space, the positioning stage 400 supports from the bottom side of the target product and clamps from both sides, and the accelerometer 620 presses down from the upper side of the target product. Among them, the installation method of the accelerometer 620 can refer to the above, and will not be elaborated here.

[0084] In this way, through the audio acquisition component 610, continuous noise detection can be carried out during the test process. The intermediate stage 300 can be switched between flexible connection and rigid connection to meet the test conditions under different working conditions. The radial thrust mechanism 500 is used to realize the switching between no-load and radial force conditions. During the test process, data can be collected through the audio acquisition component 610 and the accelerometer 620, and multiple functions of the motor can be continuously detected.

[0085] Before step S240 of controlling the radial thrust mechanism 500 to reset, it further includes: abutting the displacement sensor 630 against the rotating shaft of the target product to detect shaft yaw.

[0086] Exemplarily, before the radial thrust mechanism 500 resets, the radial force condition of the target product is simulated. The displacement sensor 630 can be abutted against the rotating shaft of the target product to detect the shaft yaw of the target product through the displacement sensor 630. Among them, the installation method of the displacement sensor 630 can refer to the above, and will not be elaborated here.

[0087] Before step S240 of controlling the radial thrust mechanism 500 to reset, it further includes:

[0088] Control the push component 120 to abut against the first sliding table 210, and drive the second sliding table 220 to move through the sliding table drive mechanism 221, so that the torque sensor 700 is connected to the rotating shaft of the target product;

[0089] Detect the torque through the torque sensor 700, and / or detect the rotational speed through the photoelectric sensor 730 and the code disk 720.

[0090] Exemplarily, under the simulated radial force condition, according to different test requirements, any one or all of torque detection and rotational speed detection can be performed on the target product. Among them, the action logics of torque detection and rotational speed detection can refer to the above text and will not be elaborated here.

[0091] Step S250: Control the intermediate stage 300 to switch to the flexible connection state, and abut the accelerometer 620 against the target product to detect vibration. After that, it further includes: Control the intermediate stage 300 to switch to the rigid connection state, and abut the displacement sensor 630 against the rotating shaft of the target product to detect shaft yaw.

[0092] Exemplarily, the condition simulated in step S250 is the no-load condition, and shaft yaw detection can also be performed on the target product. Among them, if shaft yaw detection is not performed under the radial force condition, control the displacement sensor 630 to move and abut the displacement sensor 630 against the rotating shaft of the target product to perform shaft yaw detection; and if shaft yaw detection has been performed under the radial force condition, that is, the displacement sensor 630 has been abutted against the rotating shaft of the target product, the displacement sensor 630 can be started to perform shaft yaw detection.

[0093] Step S250: Control the intermediate stage 300 to switch to the flexible connection state, and abut the accelerometer 620 against the target product to detect vibration. After that, it further includes:

[0094] Control the intermediate stage 300 to switch to the rigid connection state;

[0095] Control the pushing component 120 to abut against the first slide 210, and drive the second slide 220 to move through the slide driving mechanism 221, so that the torque sensor 700 is connected to the rotating shaft of the target product;

[0096] Detect torque through the torque sensor 700, and / or detect rotational speed through 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 adjacent to the code disk 720 and faces the code disk 720.

[0097] Exemplarily, the condition simulated in step S250 is the no-load condition, and any one or all of torque detection and rotational speed detection can also be performed on the target product. Among them, if the rotating shaft of the target product is not connected to the torque sensor 700 under the radial force condition, drive the second slide 220 to move through the slide driving mechanism 221, so that the torque sensor 700 is connected to the rotating shaft of the target product; if the rotating shaft of the target product has been connected to the torque sensor 700 under the radial force condition, data acquisition can be directly performed through the torque sensor 700 and the photoelectric sensor 730 to achieve torque detection and rotational speed detection.

[0098] This embodiment can automatically and continuously perform no-load tests and radial force tests on the target product, with a high degree of automation. It can conduct multiple tests under different working conditions, and there is no need to transfer the target product between different devices during the test process. The operation is simple, saving the transfer time, which is beneficial to improving the test efficiency.

[0099] In addition, the motor test equipment of this embodiment is also provided with structures such as a hysteresis brake and a first pressure detection component to simulate different working conditions and achieve continuous testing of multiple functions under different working conditions. However, considering that the functional tests involving structures such as the hysteresis brake and the first pressure detection component are not the key solutions of this embodiment, therefore, this embodiment will not be elaborated.

[0100] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the purpose of the present invention.

Claims

1. A motor no-load and radial force testing method, applied to motor testing equipment, 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 preset radial thrust is applied to the rotating shaft of the target product through a radial thrust mechanism (500), and radial thrust monitoring is performed through a second pressure detection component (530); the radial thrust mechanism (500) is mounted on the first slide (210) and is located adjacent to the positioning platform (400) and is connected to the second pressure detection component (530).

2. The motor no-load and radial force testing method according to claim 1, characterized in that: The step of applying a preset radial thrust to the rotating shaft of the target product by means of the radial thrust mechanism (500) and monitoring the radial thrust by means of the second pressure detection component (530) may include before and / or after: A displacement sensor (630) is abutted against the rotation axis of the target product to detect axis runout, and the displacement sensor (630) is arranged on the peripheral side of the positioning platform (400).

3. The motor no-load and radial force testing method according to claim 1 or 2, characterized in that: The step of applying a preset radial thrust to the rotating shaft of the target product by means of the radial thrust mechanism (500) and monitoring the radial thrust by means of the second pressure detection component (530) may include before and / or after: The push assembly (120) is controlled to abut against the first slide (210), and the second slide (220) is driven to move through the slide drive mechanism (221) so that the torque sensor (700) is connected to the rotating shaft 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), and the torque sensor (700) is installed on the second slide (220).

4. The motor no-load and radial force testing method according to claim 3 is characterized in that: The control push assembly (120) abuts against the first slide table (210), and drives the second slide table (220) to move through the slide table driving mechanism (221), so that the torque sensor (700) is connected to the rotating shaft of the target product, and then further includes: The torque is detected by the torque sensor (700), and / or the rotation speed is detected by a photoelectric sensor (730) and a code disc (720); the code disc (720) is connected to the torque sensor (700), and the photoelectric sensor (730) is arranged on the adjacent side of the code disc (720) and facing the code disc (720).

5. The motor no-load and radial force testing method according to claim 1, 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) is connected to the first slide platform (210), and the carrier plate (320) is connected to the positioning platform (400); and controlling the intermediate platform (300) to switch to a rigid connection state comprises: controlling the at least two clamping members (340) to abut against the side of the carrier plate (320).

6. A motor no-load and radial force testing method, applied to motor testing equipment, 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 rigidly connected state; Starting the audio acquisition component (610) to detect noise; A preset radial thrust is applied to the rotating shaft of the target product through a radial thrust mechanism (500), and radial thrust monitoring is performed through a second pressure detection component (530), wherein the radial thrust mechanism (500) is mounted on the first slide table (210) and is located adjacent to the positioning platform (400) and is connected to the second pressure detection component (530); Controlling the radial thrust mechanism (500) to reset; The intermediate platform (300) is controlled to switch to a flexible connection state, and an accelerometer (620) is placed 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).

7. The motor no-load and radial force testing method according to claim 6, characterized in that: The controlling the radial thrust mechanism (500) to reset also includes: A displacement sensor (630) is abutted against the rotation axis of the target product to detect axis runout, and the displacement sensor (630) is arranged on the peripheral side of the positioning platform (400).

8. The motor no-load and radial force testing method according to claim 6 or 7, characterized in that: The controlling the radial thrust mechanism (500) to reset also includes: 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 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), and the torque sensor (700) is installed on the second slide (220); The torque is detected by the torque sensor (700), and / or the rotation speed is detected by a photoelectric sensor (730) and a code disc (720); the code disc (720) is connected to the torque sensor (700), and the photoelectric sensor (730) is arranged on the adjacent side of the code disc (720) and facing the code disc (720).

9. The motor no-load and radial force testing method according to claim 6, characterized in that: The method further comprises: controlling the intermediate platform (300) to switch to a flexible connection state, and placing the accelerometer (620) in contact with the target product to detect vibration; and then: The intermediate carrier (300) is controlled to switch to a rigid connection state, and a displacement sensor (630) is abutted against the rotation axis of the target product to detect axis deflection, wherein the displacement sensor (630) is arranged on the peripheral side of the positioning carrier (400).

10. The motor no-load and radial force testing method according to claim 6, characterized in that: The method further comprises: controlling the intermediate platform (300) to switch to a flexible connection state, and placing the accelerometer (620) in contact with the target product to detect vibration; and then: Controlling the intermediate carrier (300) to switch to a rigid connection state; 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 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), and the torque sensor (700) is installed on the second slide (220); The torque is detected by the torque sensor (700), and / or the rotation speed is detected by a photoelectric sensor (730) and a code disc (720); the code disc (720) is connected to the torque sensor (700), and the photoelectric sensor (730) is arranged on the adjacent side of the code disc (720) and facing the code disc (720).

Images