Motor no-load and radial stress test method

Abstract

The invention discloses a motor no-load and radial stress test method, which comprises the following steps of: installing a target product on a positioning carrying table, providing a forward rotation or reverse rotation excitation signal for the target product, and enabling a middle carrying table to be in a flexible connection state; starting an audio acquisition assembly 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 platform deck to be switched to a rigid connection state; preset radial thrust is applied to a rotating shaft of the target product through a radial thrust mechanism, radial thrust monitoring is conducted through a second pressure detection assembly, and the radial thrust mechanism is installed on the first sliding table, located on the adjacent side of the positioning carrying table and connected with the second pressure detection assembly. The device can be switched between a no-load working condition and a radial stress working condition, so that continuous testing of multiple functions can be realized.

Description

Technical Field

[0001] The present invention relates to the field of automated testing technology, and in particular to a method for testing no-load and radial force of a motor. 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 no-load and radial force testing method, which can switch between no-load working conditions and radial force working conditions to facilitate continuous testing of multiple functions.

[0004] On the one hand, an embodiment of the present invention provides a motor no-load and radial force testing method, which is applied to a motor testing device, including: 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; 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; Controlling the accelerometer to stop vibration detection, and controlling the intermediate platform 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, and the radial thrust is monitored through a second pressure detection component. The radial thrust mechanism is installed on the first slide and is located adjacent to the positioning platform and is connected to the second pressure detection component.

[0005] 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 means of a radial thrust mechanism and monitoring the radial thrust by means of a second pressure detection component may include before and / or after: A displacement sensor is abutted against the rotation axis of the target product to detect axis runout, and the displacement sensor is arranged on the peripheral side of the positioning stage.

[0006] 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 means of a radial thrust mechanism and monitoring the radial thrust by means of a second pressure detection component may include before and / or after: The push assembly is controlled to abut against the first slide, and the second slide is driven to move through the slide driving mechanism so that the torque sensor is connected to the rotating shaft of the target product. The slide driving mechanism is connected to the second slide, and 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, and the torque sensor is installed on the second slide.

[0007] According to some embodiments of the present invention, the control push assembly abuts against the first slide, and drives 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, and then further includes: 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.

[0008] According to some embodiments of the present invention, the intermediate platform includes a base plate, a carrier plate, a shock absorber and at least two clamping members, the base plate is connected to the first slide, and the carrier plate is connected to the positioning platform; controlling the intermediate platform to switch to a rigid connection state includes: controlling the at least two clamping members to abut against the side of the carrier plate.

[0009] On the other hand, an embodiment of the present invention provides a motor no-load and radial force testing method, which is applied to a motor testing device, comprising: 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 rigid connection state; Start the audio acquisition component to detect noise; 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 assembly, wherein the radial thrust mechanism is mounted on the first slide and is located adjacent to the positioning platform and is connected to the second pressure detection assembly; Controlling the radial thrust mechanism to reset; The intermediate platform is controlled to switch to a flexible connection state, and an accelerometer is brought into contact with the target product to detect vibration. The audio collection component and the accelerometer are both installed on the peripheral side of the positioning platform.

[0010] According to some embodiments of the present invention, the controlling the radial thrust mechanism to reset also includes: A displacement sensor is abutted against the rotation axis of the target product to detect axis runout, and the displacement sensor is arranged on the peripheral side of the positioning stage.

[0011] According to some embodiments of the present invention, the controlling the radial thrust mechanism to reset also includes: Controlling the push assembly to abut against the first slide, 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, and the torque sensor is installed on the second slide; 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.

[0012] According to some embodiments of the present invention, the controlling the intermediate platform to switch to a flexible connection state and placing an accelerometer in contact with the target product to detect vibrations further includes: The intermediate platform is controlled to switch to a rigid connection state, and a displacement sensor is abutted against the rotation axis of the target product to detect axis runout, wherein the displacement sensor is arranged on the peripheral side of the positioning platform.

[0013] According to some embodiments of the present invention, the controlling the intermediate platform to switch to a flexible connection state and placing an accelerometer in contact with the target product to detect vibrations further includes: Controlling the intermediate platform to switch to a rigid connection state; Controlling the push assembly to abut against the first slide, 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, and the torque sensor is installed on the second slide; 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.

[0014] The embodiments of the present invention have at least the following beneficial effects: The audio collection 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. The radial thrust mechanism can realize the switching between no-load and radial force conditions. During the test, data can be collected through the audio collection component and accelerometer, which can continuously detect multiple functions of the motor.

[0015] 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

[0016] 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: Figure 1 This is a flowchart of the steps of the motor no-load and radial force testing method according to an embodiment of the present invention; Figure 2 This is one of the structural schematic diagrams of the motor testing equipment according to an embodiment of the present invention; Figure 3 This is a second structural schematic diagram of the motor testing equipment according to an embodiment of the present invention; Figure 4 This is a third structural schematic diagram of the motor testing equipment according to an embodiment of the present invention; 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; Figure 6 for Figure 5 The exploded structure diagram of the intermediate platform and the positioning platform is shown; Figure 7 for Figure 3 The middle circle shows a partial enlarged view of position A; Figure 8 This is the second step flow chart of the motor no-load and radial force testing method according to an embodiment of the present invention.

[0017] Reference numerals: Base 100, first slide rail 110, push assembly 120, first slide 210, second slide 220, slide drive mechanism 221, intermediate platform 300, bottom plate 310, carrier plate 320, second wedge surface 321, shock absorber 330, clamping member 340, first wedge surface 341, positioning platform 400, positioning block 410, positioning cavity 411, avoidance position 412, first clamping block 420, second clamping block 430, bidirectional 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 assembly 530, audio collection assembly 610, accelerometer 620, lifting and rotating mechanism 621, displacement sensor 630, second lifting drive member 631, torque sensor 700, code disc 720, photoelectric sensor 730. DETAILED DESCRIPTION

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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 based on the specific content of the technical solution.

[0022] Please refer to Figure 1This embodiment discloses a motor no-load and radial force testing method, which is applied to a motor testing device. To facilitate understanding of the motor testing method of this embodiment, the structure of the motor testing device is described below.

[0023] 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 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 adopts a microphone. The second slide 220 is connected to a slide drive mechanism 221. The slide drive mechanism 221 adopts 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 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.

[0024] This embodiment takes small motors as target products, and the size of small motors is small. Correspondingly, the volume of the motor testing 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 testing equipment is compact. For example, the intermediate platform 300 and the positioning platform 400 are both arranged on the first slide 210, and the torque sensor 700, the code disc 720 and the photoelectric sensor 730 are all arranged on the second slide 220, wherein the push assembly 120, the audio acquisition 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.

[0025] The test items for small motors 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 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 does not abut the carrier 320, the carrier 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 210 can be isolated, thereby improving the accuracy of the test; when the clamping member 340 abuts against the side of the carrier 320, the carrier 320, the clamping member 340 and the bottom plate 310 form a rigid connection relationship, so that the connection between the carrier 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 320 to clamp the carrier 320, which can prevent the carrier 320 from continuously applying pressure to the shock absorbing member 330 while clamping the carrier 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.

[0026] The motor no-load and radial force test method includes steps S110 to S140. It should be noted that the numbering of the steps in this embodiment is only for the convenience of review and understanding, and does not limit the execution order of the steps. The content of each step is described in detail below: S110, mounting the target product on the positioning platform 400, and providing a forward or reverse excitation signal to the target product, and the intermediate platform 300 is in a flexible connection state; 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.

[0027] S120, starting the audio collection component 610 to detect noise, and placing the accelerometer 620 against the target product to detect vibration; 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 4The 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.

[0028] 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 the clamping member 340; 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 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 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.

[0029] 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.

[0030] S140 , 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 .

[0031] For example, 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 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.

[0032] In this way, the audio collection component 610 can be used to continuously detect noise during the test process, the intermediate platform 300 can switch between flexible connection and rigid connection to meet the test conditions under different working conditions, and the radial thrust mechanism 500 can be used to switch between no-load and radial force conditions. During the test, data can be collected through the audio collection component 610 and the accelerometer 620, so that multiple functions of the motor can be continuously detected.

[0033] Step S140, 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, before and / or after which also includes: contacting the displacement sensor 630 to the rotating shaft of the target product to detect shaft runout.

[0034] Exemplarily, according to different test requirements, the target product can be subjected to shaft runout detection under both simulated no-load conditions and radial force conditions, and the process before step S140 is to simulate the no-load condition of the target product, and the process after step S140 is to simulate the radial force condition of the target product. If shaft runout detection is not performed under the no-load condition, the displacement sensor 630 is controlled to move and the displacement sensor 630 is brought into contact with the rotating shaft of the target product to perform shaft runout 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 be lifted and moved under the drive of the second lifting drive member 631 to abut against the rotating shaft of the target product. Considering the requirement of miniaturization design, the second lifting drive member 631 is arranged above the positioning platform 400; and if the axis runout detection has been carried out under no-load conditions, 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 axis runout detection.

[0035] Step S140, 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 before and / or after that also includes: controlling the push component 120 to abut against the first slide 210, 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.

[0036] 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 opposite sides of the first slide 210, and the push assembly 120 abuts against the first slide 210 to provide 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.

[0037] In addition, 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, and then it also includes: detecting the torque through the torque sensor 700, and / or detecting the rotation speed through the photoelectric sensor 730 and the code disk 720.

[0038] Exemplarily, the code disc 720 is mounted on the torque sensor 700, and 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. According to the number of signal triggers of the photoelectric sensor 730 per unit time, the rotation 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 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.

[0039] The above embodiment is an embodiment of the motor test equipment starting from the no-load condition and then switching to the radial force condition test. A motor no-load and radial force test method is also provided below, which is an embodiment of the motor test equipment starting from the radial force condition and then switching to the no-load condition test. The structure of the motor test equipment can be referred to above and will not be repeated here.

[0040] Please refer to Figure 8 This embodiment provides a motor no-load and radial force test method, which is applied to motor testing equipment, including S210~S250. It should be noted that the steps in this embodiment are numbered only for the convenience of review and understanding, and do not limit the execution order of the steps. Figures 2 to 7 The contents of each step are described in detail: S210, mounting the target product on the positioning platform 400, and providing a forward or reverse excitation signal to the target product, with the intermediate platform 300 being in a rigid connection state; Exemplarily, different from the above application examples, before starting the test, the intermediate platform 300 is in a rigid connection state, that is, at least two clamps 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 clamps 340. In the rigid connection state, the target product is placed stably to facilitate subsequent connection with the torque sensor 700.

[0041] S220, starting the audio collection component 610 to detect noise; Exemplarily, the audio collection component 610 is used to perform continuous noise detection on the target product during the test. 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.

[0042] S230, 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; For example, 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 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. The push block 510 movably abuts against the second pressure detection component 530. For example, the push block 510 is located below the adjacent side of the positioning platform 400, and a first rolling member 512 and a second rolling member 513 are provided on the push block 510. 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. In the process of the push block 510 moving upward, 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. In this process, static friction is converted into rolling friction, thereby 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 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 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 the simulation of various tests of the target product under the working condition of the preset radial thrust. Among them, in the process of the radial thrust mechanism 500 applying radial thrust to the rotating shaft of the target product, the audio collection component 610 can collect the sound signal emitted by the target product during the test, so as to detect whether the target product has abnormal sound during the process of being subjected to radial thrust. It is worth mentioning that the thrust applied to the target product by the radial thrust mechanism 500 can be monitored according to the second pressure detection component 530, so as to more accurately adjust the radial thrust and improve the accuracy of the test.

[0043] S240, controlling the radial thrust mechanism 500 to reset; Exemplarily, after the radial force condition test is completed, the radial thrust mechanism 500 is controlled to reset, for example, the first lifting drive member 520 drives the push block 510 to move downward, thereby canceling the radial thrust applied to the target workpiece.

[0044] S250 , control the intermediate platform 300 to switch to a flexible connection state, and place the accelerometer 620 in contact with the target product to detect vibration.

[0045] Exemplarily, in order to reduce the influence of external environmental factors, the intermediate carrier 300 is controlled to switch to a 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 absorbing member 330. The shock absorbing member 330 has a shock absorbing function and can isolate the external vibration transmitted through the first slide 210. In order to make full use of the layout space, the positioning carrier 400 is supported from the bottom side of the target product and clamped from both sides, and the accelerometer 620 is pressed 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 repeated here.

[0046] In this way, the audio collection component 610 can be used to continuously detect noise during the test process, the intermediate platform 300 can switch between flexible connection and rigid connection to meet the test conditions under different working conditions, and the radial thrust mechanism 500 can be used to switch between no-load and radial force conditions. During the test, data can be collected through the audio collection component 610 and the accelerometer 620, so that multiple functions of the motor can be continuously detected.

[0047] Step S240 , controlling the radial thrust mechanism 500 to reset, also includes: placing the displacement sensor 630 in contact with the rotating shaft of the target product to detect shaft runout.

[0048] For example, before the radial thrust mechanism 500 is reset, the radial force condition of the target product is simulated, and the displacement sensor 630 can be abutted against the rotating shaft of the target product to detect the shaft runout of the target product through the displacement sensor 630. The installation method of the displacement sensor 630 can be referred to above and will not be repeated here.

[0049] Step S240, controlling the radial thrust mechanism 500 to reset, which also includes: Control the push assembly 120 to abut against the first slide 210, and drive 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; The torque is detected by the torque sensor 700 , and / or the rotation speed is detected by the photoelectric sensor 730 and the code wheel 720 .

[0050] For example, under the simulated radial force condition, according to different test requirements, any one or all of torque detection and speed detection can be performed on the target product. The action logic of torque detection and speed detection can be referred to above and will not be repeated here.

[0051] Step S250, controlling the intermediate platform 300 to switch to a flexible connection state, and placing the accelerometer 620 against the target product to detect vibration, and then also including: controlling the intermediate platform 300 to switch to a rigid connection state, and placing the displacement sensor 630 against the rotating shaft of the target product to detect shaft runout.

[0052] Exemplarily, step S250 simulates a no-load condition, and the target product can also be subjected to shaft runout detection. If shaft runout detection is not performed under radial force conditions, the displacement sensor 630 is controlled to move, and the displacement sensor 630 is brought into contact with the rotating shaft of the target product to perform shaft runout detection; and if shaft runout detection has been performed under radial force conditions, that is, the displacement sensor 630 has been brought into contact with the rotating shaft of the target product, the displacement sensor 630 can be started to perform shaft runout detection.

[0053] Step S250, controlling the intermediate platform 300 to switch to a flexible connection state, and placing the accelerometer 620 against the target product to detect vibration, and then further comprising: Control the intermediate platform 300 to switch to a rigid connection state; Control the push assembly 120 to abut against the first slide 210, and drive 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; The torque is detected by the torque sensor 700 , and / or 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 .

[0054] Exemplarily, step S250 simulates a no-load condition, and any or all of torque detection and speed detection can also be performed on the target product. If the rotating shaft of the target product is not connected to the torque sensor 700 under the radial force condition, the second slide 220 is driven to move by the slide drive mechanism 221 to connect the torque sensor 700 to the rotating shaft of the target product; if the rotating shaft of the target product is connected to the torque sensor 700 under the radial force condition, data collection can be directly performed through the torque sensor 700 and the photoelectric sensor 730 to achieve torque detection and speed detection.

[0055] This embodiment can automatically and continuously perform no-load tests and radial force tests 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.

[0056] 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 realize continuous testing of multiple functions under different working conditions. However, considering that the functional testing of structures such as the hysteresis brake and the first pressure detection component is not the key solution of this embodiment, this embodiment will not be described in detail.

[0057] 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 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).

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