Motor no-load and axial stress testing method

Abstract

The invention discloses a motor no-load and axial stress test method, which comprises the following steps that: a target product is mounted on a positioning carrying table, a forward rotation or reverse rotation excitation signal is provided for the target product, and a middle carrying table is 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; driving a second sliding table to move through a sliding table driving mechanism so as to enable the torque sensor to be connected with a rotating shaft of the target product; and controlling the pushing assembly to retract, and driving the second sliding table to continuously move through the sliding table driving mechanism so as to drive one of the first sliding table, the middle carrying table, the positioning carrying table and the target product to abut against the first pressure detection assembly. The device can be switched between a no-load working condition and an axial stress working condition, so that continuous testing of multiple functions can be realized.

Description

Technical Field

[0001] The invention relates to the technical field of automated testing, and in particular to a method for testing no-load and axial 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 axial force testing method, which can switch between no-load working conditions and axial 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 axial force testing method, which is applied to a motor testing device, including: The target product is mounted on the positioning platform, and a forward or reverse excitation signal is provided to the target product, wherein the positioning platform is mounted on the intermediate platform, and the intermediate platform is mounted on the first slide, wherein the intermediate platform is in a flexible connection state, and a push assembly abutting against the first slide is provided on the adjacent side of the first slide; 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; The second slide is driven to move by a 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 pushing assembly is controlled to retract, and the second slide is driven to continue to move through the slide driving mechanism, so as to drive the first slide, the intermediate platform, the positioning platform and one of the target products to abut against the first pressure detection assembly, and the first pressure detection assembly and the second slide are distributed on opposite sides of the first slide.

[0005] According to some embodiments of the present invention, the step of driving the second slide to move by the slide drive mechanism so that the torque sensor is connected to the rotating shaft of the target product further 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.

[0006] According to some embodiments of the present invention, before and / or after controlling the push assembly to retract and driving the second slide to continue to move through the slide drive mechanism to drive the first slide, the intermediate platform, the positioning platform and one of the target product to abut against the first pressure detection assembly, the following may also be included: 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.

[0007] According to some embodiments of the present invention, the control of the push assembly to retract, and the driving of the second slide to continue to move by the slide drive mechanism, so as to drive the first slide, the intermediate platform, the positioning platform and one of the target product to abut against the first pressure detection assembly, further comprising: 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.

[0008] According to some embodiments of the present invention, the motor no-load and axial force testing method further includes: The second slide table is driven to reset by the slide table driving mechanism so as to separate the torque sensor from the rotating shaft of the target product; The pushing assembly is controlled to abut against the first slide table to push the first slide table to an initial position.

[0009] On the other hand, an embodiment of the present invention provides a motor no-load and axial 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; Controlling the push assembly to abut against the first slide, and driving the second slide to move through the slide drive mechanism, so that the torque sensor is connected to the rotating shaft of the target product, the slide drive mechanism is connected to the second slide, the second slide and the first slide are installed on the same slide rail, and the second slide and the push assembly are distributed on opposite sides of the first slide; Controlling the push assembly to retract, and driving the second slide to continue to move through the slide drive mechanism, so as to drive the first slide, the intermediate platform, the positioning platform and one of the target product to abut against the first pressure detection assembly, wherein the first pressure detection assembly and the second slide are distributed on opposite sides of the first slide; Start the audio acquisition component to detect noise; The second slide is driven to reset by the slide drive mechanism and the first slide is reset to the initial position by the push assembly; 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 step of starting the audio acquisition component to detect noise 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.

[0011] According to some embodiments of the present invention, the step of starting the audio acquisition component to detect noise further 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.

[0012] According to some embodiments of the present invention, the controlling the intermediate platform to switch to a flexible connection state further 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.

[0013] According to some embodiments of the present invention, the step of driving the second slide to reset by the slide drive mechanism and resetting the first slide to an initial position by the push assembly includes: The second slide is driven to move by the slide drive mechanism, and the first slide is pushed by the push assembly, so as to push the first slide to an initial position, and the rotation shaft of the target product and the torque sensor remain connected; After resetting to the initial position, the torque is detected by the torque sensor, and / or the rotation speed is detected by the photoelectric sensor and the code disk; the code disk is connected to the torque sensor, and the photoelectric sensor is arranged on the adjacent side of the code disk and facing the code disk.

[0014] The embodiments of the present invention have at least the following beneficial effects: The audio acquisition component can be used to continuously detect noise during the test process. The intermediate platform can switch between flexible connection and rigid connection to meet the test conditions under different working conditions. The slide drive mechanism drives the second slide to move to achieve switching between no-load and axial force conditions. During the test, data can be collected through the audio acquisition 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 one of the step flow charts of the motor no-load and axial 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 This is the second step flow chart of the motor no-load and axial force testing method according to an embodiment of the present invention.

[0017] Reference numerals: Base 100, first slide rail 110, push assembly 120, first pressure detection assembly 130, first slide 210, second slide 220, slide drive mechanism 221, intermediate 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, 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 in combination with the specific content of the technical solution.

[0022] Please refer to Figure 1 This embodiment discloses a motor no-load and axial force testing method, which is applied to a motor testing device. In order to facilitate understanding of the motor testing method of this embodiment, the structure of the motor testing device is first 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 axial force test. Among them, in order to improve the accuracy of the test, some items need to reduce the interference of external environmental factors (such as vibration) as much as possible, while the remaining test items will exert a certain force on the target product during the test, requiring the target product to be placed stably. Based on this, the present embodiment adds an intermediate platform 300 between the first slide 210 and the positioning platform 400. The intermediate platform 300 has two states: flexible connection and rigid connection, and can be freely switched according to the requirements of the test items during the test. For example, when the clamping member 340 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 axial force test method includes steps S110 to S150. 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. The contents of each step are described in detail below: S110, the target product is mounted on the positioning platform 400, and a forward or reverse excitation signal is provided to the target product, the intermediate platform 300 is in a flexible connection state, and a push assembly 120 abutting against the first slide 210 is provided on the adjacent side of the first slide 210; For example, please refer to Figure 5 and Figure 6The 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, start the audio collection component 610 to detect noise, and place the accelerometer 620 against the target product to detect vibration, the audio collection component 610 and the accelerometer 620 are both installed on the peripheral side of the positioning platform 400; 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 two clamping members 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, 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; 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.

[0031] S150, control the push assembly 120 to retract, and drive the second slide 220 to continue moving through the slide drive mechanism 221, so as to drive the first slide 210, the intermediate platform 300, the positioning platform 400 and one of the target products to abut against the first pressure detection assembly 130, and the first pressure detection assembly 130 and the second slide 220 are distributed on opposite sides of the first slide 210.

[0032] Exemplarily, the push assembly 120 is controlled to retract so that the push assembly 120 is separated from the first slide 210 to avoid the moving space of the first slide 210. The slide drive mechanism 221 drives the second slide 220 to move. Since the torque sensor 700 is connected to the rotating shaft of the target product and the intermediate platform 300 is in a rigid connection state, the torque sensor 700 can apply axial thrust to the target product during the movement, and the target product can drive the first slide 210 to move synchronously until the first slide assembly or the target product abuts against the first pressure detection assembly 130, and the axial thrust is monitored by the first pressure detection assembly 130. According to the different installation heights of the first pressure detection component 130, the abutment positions of the first slide assembly and the first pressure detection component 130 are different. For example, the first slide 210, the intermediate platform 300, the positioning platform 400 and one of the target product are movably abutted against the first pressure detection component 130. For example, if the installation height of the first pressure detection component 130 is adapted to the first slide 210, the first slide 210 can abut against the first pressure detection component 130 during movement. For another example, if the installation height of the first pressure detection component 130 is adapted to the target product, during the movement of the first slide 210, the target product moves synchronously with the first slide 210, thereby abutting against the first pressure detection component 130. In this way, the working condition of the target product being subjected to axial thrust can be simulated.

[0033] In this way, the audio collection component 610 can be used to continuously detect noise during the test process, and the intermediate platform 300 can switch between flexible connection and rigid connection to meet the test conditions under different working conditions. The second slide 220 is driven to move by the slide drive mechanism 221 to achieve switching between no-load and axial force conditions. During the test, data can be collected through the audio collection component 610 and the accelerometer 620, and continuous detection of multiple functions of the motor can be performed.

[0034] Step S140, driving the second slide 220 to move through the slide drive mechanism 221 to connect the torque sensor 700 to the rotating shaft of the target product, which also includes: abutting the displacement sensor 630 against the rotating shaft of the target product to detect the shaft runout, and the displacement sensor 630 is arranged on the peripheral side of the positioning platform 400.

[0035] For example, please refer to Figure 4, the displacement sensor 630 is connected to a second lifting drive 631. Considering the requirements of miniaturized design, the second lifting drive 631 is located above the positioning platform 400. For example, the motor testing equipment also includes a soundproof box. The first slide assembly and the second slide assembly are both installed in the soundproof box. The second lifting drive 631 is installed on the top of the soundproof box, which can save the layout space of the base 100, making the layout between the various mechanisms more compact and realizing miniaturized design. The second lifting drive 631 adopts a cylinder-driven structure to drive the displacement sensor 630 to perform lifting and lowering movements. For example, in the initial state, the displacement sensor 630 is located above the rotating shaft of the target product. When the shaft runout detection is required, the second lifting drive 631 drives the displacement sensor 630 to move downward so that the displacement sensor 630 abuts against the rotating shaft of the target product, thereby performing shaft runout detection on the target product through the displacement sensor 630.

[0036] Step S150, control the push assembly 120 to retract, and drive the second slide 220 to continue to move through the slide drive mechanism 221, so as to drive the first slide 210, the intermediate platform 300, the positioning platform 400 and one of the target products to abut against the first pressure detection assembly 130, and before and / or after 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.

[0037] Exemplarily, before step S150, the no-load condition of the target product is simulated, and the torque of the target product under the no-load condition is detected by the torque sensor 700, and the speed of the target product under the no-load condition can be detected by the cooperation of the code disc 720 and the photoelectric sensor 730. Among them, the code disc 720 is installed 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 in a unit time, the speed of the target product can be determined. In actual applications, the test items can be selected according to actual needs, for example, the torque is detected by the torque sensor 700, or the 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 speed is also detected by the photoelectric sensor 730 and the code disc 720.

[0038] After step S150, the axial stress condition of the target product is simulated, and the torque of the target product under the axial stress condition is detected by the torque sensor 700. The rotation speed of the target product under the axial stress condition can be detected by the cooperation of the code disk 720 and the photoelectric sensor 730.

[0039] Step S150, control the push assembly 120 to retract, and drive the second slide 220 to continue to move through the slide drive mechanism 221, so as to drive the first slide 210, the intermediate platform 300, the positioning platform 400 and one of the target products to abut against the first pressure detection assembly 130, and then also includes: abutting the displacement sensor 630 against the rotating shaft of the target product to detect the shaft runout.

[0040] Exemplarily, according to different testing requirements, the target product can be subjected to axial runout detection under both simulated no-load conditions and axial force conditions, and step S150 is followed by simulating the axial force condition of the target product. If the axial runout detection is not performed under the no-load condition, the displacement sensor 630 is controlled to move, and the displacement sensor 630 is abutted against the rotating shaft of the target product to perform the axial runout detection; if the axial runout 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 axial runout detection.

[0041] In addition, the motor no-load and axial force testing method also includes: driving the second slide 220 to reset through the slide drive mechanism 221 to separate the torque sensor 700 from the rotating shaft of the target product; controlling the pushing assembly 120 to abut the first slide 210 to push the first slide 210 to the initial position.

[0042] Exemplarily, after completing all test items, the second slide 220 is reset, the torque sensor 700 is separated from the rotating shaft of the target product, the thrust applied to the target product is cancelled, and the pushing assembly 120 extends and abuts the first slide 210 to push the first slide 210 to the initial position, thereby returning the target product to the initial position to facilitate unloading of the target product.

[0043] The above embodiment is an embodiment of the motor test equipment starting from the no-load condition and then switching to the axial force condition test. The following also provides a motor no-load and axial force test method, which is an embodiment of the motor test equipment starting from the axial force condition and then switching to the no-load condition test. Among them, the structure of the motor test equipment can be referred to above and will not be repeated here.

[0044] Please refer to Figure 7 This embodiment provides a motor no-load and axial force test method, which is applied to motor testing equipment, including S210~S260. 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 6 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.

[0045] S220, controlling the push assembly 120 to abut against the first slide 210, and driving the second slide 220 to move through the slide drive mechanism 221, so that the torque sensor 700 is connected to the rotating shaft of the target product; Exemplarily, 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 a direction close to the first slide 210, the target product is mounted 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 mounted on the second slide 220, and the second slide 220 drives the torque sensor 700 to move synchronously in a direction close to the first slide 210, so that the torque sensor 700 can be connected to the rotation axis of the target product, and the hysteresis brake provides a preset load greater than zero. 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.

[0046] S230, controlling the push assembly 120 to retract, and driving the second slide 220 to continue to move through the slide drive mechanism 221, so as to drive the first slide 210, the intermediate stage 300, the positioning stage 400 and one of the target products to abut against the first pressure detection assembly 130; Exemplarily, when the torque sensor 700 is connected to the rotating shaft of the target product, the push assembly 120 is controlled to retract so that the push assembly 120 is separated from the first slide 210 to avoid the moving space of the first slide 210. The slide drive mechanism 221 drives the second slide 220 to move. Since the torque sensor 700 is connected to the rotating shaft of the target product and the intermediate platform 300 is in a rigid connection state, the torque sensor 700 can apply axial thrust to the target product during the movement, and the target product can drive the first slide 210 to move synchronously until the first slide assembly or the target product abuts against the first pressure detection assembly 130, and the axial thrust is monitored by the first pressure detection assembly 130. According to the different installation heights of the first pressure detection assembly 130, one of the first slide 210, the intermediate platform 300, the positioning platform 400 and the target product can be movably abutted against the first pressure detection assembly 130.

[0047] S240, 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.

[0048] S250, driving the second slide 220 to reset by the slide drive mechanism 221 and resetting the first slide 210 to the initial position by the push assembly 120; For example, after completing various tests under the axial force condition, the test can be switched to the no-load condition. The second slide 220 and the first slide 210 are reset to cancel the axial force applied to the target product, so that the target product enters the no-load condition.

[0049] S260 , 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.

[0050] 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.

[0051] In this way, the audio collection component 610 can be used to continuously detect noise during the test process, and the intermediate platform 300 can switch between flexible connection and rigid connection to meet the test conditions under different working conditions. The second slide 220 is driven to move by the slide drive mechanism 221 to achieve switching between no-load and axial force conditions. During the test, data can be collected through the audio collection component 610 and the accelerometer 620, and continuous detection of multiple functions of the motor can be performed.

[0052] Step S240 , starting the audio collection component 610 to detect noise, and then further comprising: detecting torque through the torque sensor 700 , and / or detecting rotation speed through the photoelectric sensor 730 and the code wheel 720 .

[0053] For example, in the axial force condition of the target product, before the intermediate platform 300 switches the connection state and performs vibration detection, the torque sensor 700 performs torque detection on the target product under the load condition, and the code disc 720 and the photoelectric sensor 730 cooperate to detect the speed of the target product under the load condition. The slide drive mechanism 221 can adjust the axial force applied to the target product by adjusting the position of the second slide 220, thereby realizing testing under different axial forces.

[0054] Step S240 , starting the audio collection component 610 to detect noise, and then further comprising: placing the displacement sensor 630 against the rotating shaft of the target product to detect shaft runout.

[0055] For example, the purpose of controlling the intermediate platform 300 to switch to a flexible state is to improve the accuracy of the detection during vibration detection. Before the vibration detection, the target product can also be tested for axial runout by the displacement sensor 630, wherein the installation method of the displacement sensor 630 can refer to the above, and will not be repeated here.

[0056] Step S260 , controlling the intermediate stage 300 to switch to a flexible connection state, also includes: placing the displacement sensor 630 in contact with the rotation axis of the target product to detect the axis runout.

[0057] Exemplarily, according to different testing requirements, the target product can be subjected to axial runout detection under both simulated axial force conditions and no-load conditions, and step S260 simulates the no-load force condition of the target product. If axial runout detection is not performed under the axial force condition, the displacement sensor 630 is controlled to move and the displacement sensor 630 is abutted against the rotating shaft of the target product to perform axial runout detection. If axial runout detection has been performed under the axial force 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 axial runout detection.

[0058] In some application examples, step S250, driving the second slide 220 to reset by the slide drive mechanism 221 and resetting the first slide 210 to the initial position by the push assembly 120, includes: The second slide 220 is driven to reset by the slide driving mechanism 221 to separate the torque sensor 700 from the rotating shaft of the target product; the pushing assembly 120 is controlled to abut against the first slide 210 to push the first slide 210 to the initial position.

[0059] Exemplarily, after completing all test items, the second slide 220 is reset, the torque sensor 700 is separated from the rotating shaft of the target product, the thrust applied to the target product is cancelled, and the pushing assembly 120 extends and abuts the first slide 210 to push the first slide 210 to the initial position, thereby returning the target product to the initial position to facilitate unloading of the target product.

[0060] Alternatively, in some other application examples, step S250, driving the second slide 220 to reset by the slide drive mechanism 221 and resetting the first slide 210 to the initial position by the push assembly 120, includes: The second slide 220 is driven to move by the slide driving mechanism 221, and the first slide 210 is pushed by the push assembly 120, so as to push the first slide 210 to the initial position, and the rotation axis of the target product and the torque sensor 700 remain connected; After resetting to the initial position, 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 .

[0061] Exemplarily, after completing the test of the axial force working condition, the slide drive mechanism 221 and the push assembly 120 act synchronously to move the second slide 220 and the first slide 210 to the target position respectively, for example, the first slide 210 moves to the initial position, and the position of the second slide 220 enables the torque sensor 700 to be connected to the rotating shaft of the target product, so as to facilitate torque detection through the torque sensor 700, or speed detection through the photoelectric sensor 730 and the code disk 720. Of course, both torque detection and speed detection can be performed.

[0062] This embodiment can automatically and continuously perform no-load tests and axial 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.

[0063] In addition, the motor test equipment of this embodiment is also provided with structures such as a hysteresis brake and a radial thrust mechanism 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 a hysteresis brake and a radial thrust mechanism is not the key solution of this embodiment, this embodiment will not be described in detail.

[0064] 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 axial force testing method, applied to motor testing equipment, characterized in that: include: The target product is mounted on a positioning platform (400), and a forward or reverse excitation signal is provided to the target product, wherein the positioning platform (400) is mounted on an intermediate platform (300), and the intermediate platform (300) is mounted on a first slide (210), wherein the intermediate platform (300) is in a flexibly connected state, and a push assembly (120) abutting against the first slide (210) is provided on an adjacent side of the first slide (210); 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; The second slide (220) is driven to move by a 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); The pushing assembly (120) is controlled to retract, and the second slide (220) is driven to continue to move through the slide drive mechanism (221), so as to drive the first slide (210), the intermediate platform (300), the positioning platform (400) and one of the target products to abut against the first pressure detection assembly (130), and the first pressure detection assembly (130) and the second slide (220) are distributed on opposite sides of the first slide (210).

2. The motor no-load and axial force testing method according to claim 1 is characterized in that: The method further comprises: driving the second slide table (220) to move by means of the slide table driving mechanism (221) so as to connect the torque sensor (700) to the rotating shaft of the target product; 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 axial force testing method according to claim 1 is characterized in that: The step of controlling the pushing assembly (120) to retract and driving the second slide (220) to continue to move by means of the slide drive mechanism (221) so as to drive the first slide (210), the intermediate platform (300), the positioning platform (400) and one of the target product to abut against the first pressure detection assembly (130) may include before and / or after: 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).

4. The motor no-load and axial force testing method according to claim 1 is characterized in that: The method further comprises: controlling the pushing assembly (120) to retract, and driving the second slide (220) to continue to move through the slide drive mechanism (221), so as to drive the first slide (210), the intermediate platform (300), the positioning platform (400) and one of the target product to abut against the first pressure detection assembly (130), and then further comprising: 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).

5. The motor no-load and axial force testing method according to any one of claims 1 to 4, characterized in that: The motor no-load and axial force testing method also includes: driving the second slide table (220) to reset by means of the slide table driving mechanism (221), so as to separate the torque sensor (700) from the rotating shaft of the target product; The pushing component (120) is controlled to abut against the first slide table (210) so as to push the first slide table (210) to an initial position.

6. A motor no-load and axial force test 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; Controlling the push assembly (120) to abut against the first slide (210), and driving the second slide (220) to move via a slide drive mechanism (221), so that the torque sensor (700) is connected to the rotation axis of the target product, the slide drive mechanism (221) is connected to the second slide (220), the second slide (220) and the first slide (210) are installed on the same slide rail, and the second slide (220) and the push assembly (120) are distributed on opposite sides of the first slide (210); Controlling the push assembly (120) to retract, and driving the second slide (220) to continue to move through the slide drive mechanism (221), so as to drive the first slide (210), the intermediate platform (300), the positioning platform (400) and one of the target products to abut against the first pressure detection assembly (130), the first pressure detection assembly (130) and the second slide (220) being distributed on opposite sides of the first slide (210); Starting the audio acquisition component (610) to detect noise; The second slide (220) is driven to reset by the slide drive mechanism (221), and the first slide (210) is reset to an initial position by the push assembly (120); 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 axial force testing method according to claim 6 is characterized in that: The step of starting the audio collection component (610) to detect noise 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).

8. The motor no-load and axial force testing method according to claim 6 or 7, characterized in that: The step of starting the audio collection component (610) to detect noise further 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).

9. The motor no-load and axial force testing method according to claim 6, characterized in that: The controlling the intermediate platform (300) to switch to a flexible connection state 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).

10. The motor no-load and axial force testing method according to claim 6 or 9, characterized in that: The method of driving the second slide (220) to reset by the slide drive mechanism (221) and resetting the first slide (210) to an initial position by the push assembly (120) comprises: The second slide (220) is driven to move by the slide drive mechanism (221), and the first slide (210) is pushed by the push assembly (120), so as to push the first slide (210) to an initial position, and the rotation axis of the target product and the torque sensor (700) remain connected; After resetting to the initial position, 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).

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