Motor No-Load and Axial Force Test Method

Abstract

The present invention discloses a method for testing the no-load and axial force of a motor, which includes installing a target product on a positioning stage, providing a forward or reverse excitation signal to the target product, and the intermediate stage being in a flexible connection state; starting an audio acquisition component to detect noise, and abutting an accelerometer against the target product to detect vibration; controlling the accelerometer to stop vibration detection, and controlling the intermediate stage to switch to a rigid connection state; driving a second slide by a slide driving mechanism to connect a torque sensor with the rotating shaft of the target product; controlling the retraction of a pushing component, and driving the second slide to continue moving by the slide driving mechanism to drive one of a first slide, the intermediate stage, the positioning stage and the target product to abut against a first pressure detection component. The present invention can switch between the no-load working condition and the axial force working condition, so as to facilitate the continuous testing of multiple functions.

Description

Technical Field

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

[0002] A motor (also known as a motor) is a common power device. With the development of technology, small motors are increasingly widely used, and are commonly found in household appliances and 3C products, etc. In order to ensure the production quality of the motor, quality testing needs to be carried out before leaving the factory. However, the testing items that can be performed by the testing equipment of the related technology are few, the integration degree is not high, and the working conditions simulated between different testing items are different. If multiple tests are to be carried out, multiple different devices need to be used for collaborative testing. The transfer of the target product between different devices takes time, and it is difficult to perform continuous testing of 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. For this purpose, the present invention provides a method for testing a motor under no-load and axial force conditions, 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 method for testing a motor under no-load and axial force conditions, which is applied to a motor testing device and includes:

[0005] Install the target product on the positioning carrier, and provide a forward or reverse excitation signal to the target product. The positioning carrier is installed on the intermediate carrier, the intermediate carrier is installed on the first sliding table, the intermediate carrier is in a flexible connection state, and a pushing component that abuts against the first sliding table is arranged on the adjacent side of the first sliding table;

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

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

[0008] Drive the second sliding table to move through the sliding table drive mechanism so that the torque sensor is connected to the rotating shaft of the target product. The sliding table drive mechanism is connected to the second sliding table. The second sliding table and the first sliding table are installed on the same slide rail, and the second sliding table and the pushing component are distributed on opposite sides of the first sliding table. The torque sensor is installed on the second sliding table;

[0009] Control the retraction of the pushing component, and drive the second sliding table to continue to move through the sliding table driving mechanism, so as to drive one of the first sliding table, the intermediate carrier, the positioning carrier and the target product to abut against the first pressure detection component, and the first pressure detection component and the second sliding table are distributed on opposite sides of the first sliding table.

[0010] According to some embodiments of the present invention, before driving the second sliding table to move through the sliding table driving mechanism so that the torque sensor is connected to the rotating shaft of the target product, it further includes:

[0011] Abut the displacement sensor against the rotating shaft of the target product to detect shaft yaw, and the displacement sensor is arranged on the periphery of the positioning carrier.

[0012] According to some embodiments of the present invention, before and / or after controlling the retraction of the pushing component and driving the second sliding table to continue to move through the sliding table driving mechanism so as to drive one of the first sliding table, the intermediate carrier, the positioning carrier and the target product to abut against the first pressure detection component, it further includes:

[0013] Detect the torque through the torque sensor, and / or detect the rotational speed through the photoelectric sensor and the code disk; the code disk is connected to the torque sensor, and the photoelectric sensor is arranged adjacent to the code disk and faces the code disk.

[0014] According to some embodiments of the present invention, after controlling the retraction of the pushing component and driving the second sliding table to continue to move through the sliding table driving mechanism so as to drive one of the first sliding table, the intermediate carrier, the positioning carrier and the target product to abut against the first pressure detection component, it further includes:

[0015] Abut the displacement sensor against the rotating shaft of the target product to detect shaft yaw, and the displacement sensor is arranged on the periphery of the positioning carrier.

[0016] According to some embodiments of the present invention, the method for testing the no-load and axial force of the motor further includes:

[0017] Drive the second sliding table to reset through the sliding table driving mechanism so that the torque sensor is separated from the rotating shaft of the target product;

[0018] Control the pushing component to abut against the first sliding table to push the first sliding table to the initial position.

[0019] On the other hand, an embodiment of the present invention provides a method for testing the no-load and axial force of a motor, which is applied to a motor testing device, and includes:

[0020] Install the target product on the positioning stage, and provide a forward or reverse excitation signal to the target product. The positioning stage is installed on the intermediate stage, and the intermediate stage is installed on the first sliding stage. The intermediate stage is in a rigid connection state;

[0021] Control the pushing component to abut against the first sliding stage, and drive the second sliding stage to move through the sliding stage driving mechanism, so that the torque sensor is connected to the rotating shaft of the target product. The sliding stage driving mechanism is connected to the second sliding stage. The second sliding stage and the first sliding stage are installed on the same slide rail, and the second sliding stage and the pushing component are distributed on opposite sides of the first sliding stage;

[0022] Control the pushing component to retract, and drive the second sliding stage to continue to move through the sliding stage driving mechanism, so as to drive one of the first sliding stage, the intermediate stage, the positioning stage and the target product to abut against the first pressure detection component. The first pressure detection component and the second sliding stage are distributed on opposite sides of the first sliding stage;

[0023] Start the audio acquisition component to detect noise;

[0024] Drive the second sliding stage to reset through the sliding stage driving mechanism and reset the first sliding stage to the initial position through the pushing component;

[0025] Control the intermediate stage to switch to a flexible connection state, and abut the accelerometer against the target product to detect vibration. The audio acquisition component and the accelerometer are both installed on the periphery of the positioning stage.

[0026] According to some embodiments of the present invention, after starting the audio acquisition component to detect noise, it further includes:

[0027] Detect torque through the torque sensor, and / or detect rotational speed through the photoelectric sensor and the code disk. The code disk is connected to the torque sensor, and the photoelectric sensor is arranged adjacent to the code disk and faces the code disk.

[0028] According to some embodiments of the present invention, after starting the audio acquisition component to detect noise, it further includes:

[0029] Abut the displacement sensor against the rotating shaft of the target product to detect shaft yaw. The displacement sensor is arranged on the periphery of the positioning stage.

[0030] According to some embodiments of the present invention, before controlling the intermediate stage to switch to a flexible connection state, it further includes:

[0031] Abut the displacement sensor against the rotating shaft of the target product to detect shaft yaw. The displacement sensor is arranged on the periphery of the positioning stage.

[0032] According to some embodiments of the present invention, driving the second sliding table to reset by the sliding table driving mechanism and resetting the first sliding table to the initial position by the pushing component includes:

[0033] Driving the second sliding table to move by the sliding table driving mechanism, and pushing the first sliding table by the pushing component to push the first sliding table to the initial position, and the rotating shaft of the target product remains connected to the torque sensor;

[0034] After resetting to the initial position, detecting the torque through the torque sensor, and / or detecting the rotational speed through the photoelectric sensor and the code disc; the code disc is connected to the torque sensor, and the photoelectric sensor is arranged adjacent to the code disc and faces the code disc.

[0035] The embodiments of the present invention at least have the following beneficial effects:

[0036] The audio acquisition component can continuously detect the noise during the test process. The intermediate carrier table can be switched between flexible connection and rigid connection to meet the test conditions under different working conditions. Driving the second sliding table to move by the sliding table driving mechanism realizes the switching between no-load and axial force-bearing working conditions. During the test process, data can be collected through the audio acquisition component and the accelerometer, and multiple functions of the motor can be continuously detected.

[0037] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0039] Figure 1 is one of the step flowcharts of the no-load and axial force-bearing test method for the motor according to the embodiment of the present invention;

[0040] Figure 2 is one of the structural schematic diagrams of the motor test equipment according to the embodiment of the present invention;

[0041] Figure 3 is the second structural schematic diagram of the motor test equipment according to the embodiment of the present invention;

[0042] Figure 4 is the third structural schematic diagram of the motor test equipment according to the embodiment of the present invention;

[0043] Figure 5 is Figure 2Schematic structural diagram of the intermediate stage and the positioning stage of the shown motor test equipment;

[0044] Figure 6 For Figure 5 Exploded structural diagram of the shown intermediate stage and the positioning stage;

[0045] Figure 7 It is the second step flowchart of the no-load and axial force test method for the motor in the embodiment of the present invention.

[0046] Reference numerals:

[0047] Base 100, first slide rail 110, pushing assembly 120, first pressure detection assembly 130, first slide 210, second slide 220, slide driving mechanism 221, intermediate stage 300, bottom plate 310, carrier plate 320, second wedge surface 321, shock absorber 330, clamping member 340, first wedge surface 341, positioning stage 400, positioning block 410, positioning cavity 411, avoidance position 412, first clamping block 420, second clamping block 430, double-acting cylinder 440, audio acquisition assembly 610, accelerometer 620, lifting and rotating mechanism 621, displacement sensor 630, second lifting driving member 631, torque sensor 700, code disk 720, photoelectric sensor 730. Detailed description of the specific implementation

[0048] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0049] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0050] In the description of the present invention, the meaning of "several" is one or more, the meaning of "multiple" is two or more, greater than, less than, exceeding, etc. are understood not to include the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first", "second", etc., it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or the sequence of the indicated technical features.

[0051] In the description of the present invention, unless otherwise clearly defined, terms such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0052] Please refer to Figure 1 , this embodiment discloses a method for testing the no-load and axial force of a motor, which is applied to a motor testing device. To facilitate the understanding of the motor testing method of this embodiment, the structure of the motor testing device will be described first below.

[0053] Please refer to Figure 2 、 Figure 3 and Figure 4 , the motor testing device includes a first sliding table assembly and a second sliding table assembly installed on the same sliding rail. Exemplarily, a first sliding rail 110 is installed on a base 100, and both the first sliding table assembly and the second sliding table assembly are slidably installed on the first sliding rail 110. For example, the first sliding table assembly includes a first sliding table 210, an intermediate carrier 300, and a positioning carrier 400, and the second sliding table assembly includes a second sliding table 220, a torque sensor 700, a code disk 720, and a photoelectric sensor 730. Both the first sliding table 210 and the second sliding table 220 are slidably installed on the first sliding rail 110. The intermediate carrier 300 is installed on the first sliding table 210. The intermediate carrier 300 includes a bottom plate 310, a carrier plate 320, a shock absorber 330, and at least two clamping members 340. The bottom plate 310 is connected to the first sliding table 210, and the shock absorber 330 is connected between the bottom plate 310 and the carrier plate 320. The shock absorber 330 can adopt structures such as urethane rubber, shock-absorbing silica gel, or shock-absorbing springs. The clamping member 340 is a cylinder-driven structure, and at least two clamping members 340 are installed on the bottom plate 310 and are distributed on opposite sides of the carrier plate 320. The positioning carrier 400 is installed on the carrier plate 320, and the positioning carrier 400 is used to carry the target product. A pushing component 120 is provided on the adjacent side of the first sliding table assembly. Specifically, the pushing component 120 is installed on the base 100 and is located on the adjacent side of the first sliding table 210. An audio acquisition component 610, an accelerometer 620, and a displacement sensor 630 are provided on the periphery of the positioning carrier 400. The audio acquisition component 610 uses a microphone. The second sliding table 220 is connected to a sliding table driving mechanism 221. The sliding table driving mechanism 221 adopts a combination of a lead screw and a motor. The torque sensor 700 is installed on the second sliding table 220, the torque sensor 700 is connected to the code disk 720, and the photoelectric sensor 730 is provided on the adjacent side of the code disk 720, and the detection end of the photoelectric sensor 730 faces the code disk 720.

[0054] In this embodiment, a small motor is used as the target product. Since the size of the small motor is small, correspondingly, the volume of the motor testing equipment in this embodiment is also small. To meet the requirements of miniaturized design, the structural arrangement between the various components of the motor testing equipment is compact. For example, the intermediate stage 300 and the positioning stage 400 are both arranged on the first sliding table 210, and the torque sensor 700, the encoder disc 720, and the photoelectric sensor 730 are all arranged on the second sliding table 220. Among them, the pushing assembly 120, the audio acquisition assembly 610, the accelerometer 620, and the displacement sensor 630 are distributed around the first sliding table assembly. A modular structural layout is adopted, with a clear and compact layout, high integration, and convenience for debugging and maintenance.

[0055] The test items of the small motor include no-load test and axial force test. Among them, in order to improve the accuracy of the test, some items need to minimize the interference of external environmental factors (such as vibration), while the remaining test items will apply a certain force to the target product during the test, requiring the target product to be placed stably. Based on this, an intermediate stage 300 is added between the first sliding table 210 and the positioning stage 400 in this embodiment. The intermediate stage 300 has two states: flexible connection and rigid connection, and can be freely switched according to the requirements of the test items during the test. For example, when the clamping member 340 does not abut against the carrier plate 320, the carrier plate 320 is connected to the bottom plate 310 through the shock-absorbing member 330. Since the shock-absorbing member 330 has a shock-absorbing effect, it can isolate the vibration of the external environment conducted through the first sliding table 210, thereby improving the accuracy of the test; when the clamping member 340 abuts against the side of the carrier plate 320, the carrier plate 320, the clamping member 340, and the bottom plate 310 form a rigid connection relationship, making the connection between the carrier plate 320 and the bottom plate 310 reliable, thereby improving the placement stability of the target product. It is worth mentioning that the clamping member 340 abuts against and clamps the side of the carrier plate 320, which can clamp the carrier plate 320 while avoiding the carrier plate 320 continuously applying pressure to the shock-absorbing member 330, reducing the fatigue degree of the shock-absorbing member 330, and being beneficial to improving the durability and shock-absorbing reliability of the shock-absorbing member 330. Among them, the number of the clamping members 340 can be determined according to the actual application situation, such as two or four, etc. Every two clamping members 340 are a group and abut against each other from the opposite sides of the carrier plate 320 respectively.

[0056] The method for testing the no-load and axial force of the motor includes steps S110 to S150. It should be noted that the step numbers in this embodiment are only for the convenience of review and understanding, rather than limiting the execution order of the steps. The content of each step is described in detail below:

[0057] S110. Install the target product on the positioning stage 400 and provide a forward or reverse excitation signal to the target product. The intermediate stage 300 is in a flexible connection state. A pushing component 120 that abuts against the first sliding stage 210 is arranged adjacent to the first sliding stage 210;

[0058] Exemplarily, please refer to Figure 5 and Figure 6 , the positioning stage 400 includes a positioning block 410, a first clamping block 420 and a second clamping block 430. A positioning cavity 411 is arranged in the middle of the positioning block 410 for placing the target product. Avoidance positions 412 are arranged on opposite sides of the positioning block 410. The first positioning block 410 and the second positioning block 410 are movably installed in the avoidance positions 412 and are connected to a double-acting cylinder 440. The double-acting cylinder 440 is used to drive the first clamping block 420 and the second clamping block 430 to move towards or away from each other, so as to clamp or loosen the target product. Among them, by arranging the avoidance positions 412 on the positioning block 410, the relative height of the first clamping block 420 and the second clamping block 430 can be reduced, which is beneficial to realizing miniaturized design. By using the double-acting cylinder 440 to drive the first clamping block 420 and the second clamping block 430, not only the number of cylinders can be saved to meet the requirements of miniaturized design, but also the pressure applied to the carrier plate 320 can be reduced, improving the shock absorption effect of the intermediate stage 300 to a certain extent, and improving the action synchronization performance of the first clamping block 420 and the second clamping block 430, so that the target product can be kept at a preset center position. Among them, the double-acting cylinder 440 is installed at the bottom of the positioning block 410 and connected to the carrier plate 320. By arranging the double-acting cylinder 440 between the positioning block 410 and the carrier plate 320, the positioning block 410 can be supported by the double-acting cylinder 440, and the centers of gravity of the double-acting cylinder 440 and the positioning block 410 can be kept on the same or similar longitudinal straight line, which is beneficial to ensuring the uniform force on the carrier plate 320 at each position, avoiding excessive force on one side, and is beneficial to improving the shock absorption effect.

[0059] S120. Start the audio acquisition component 610 to detect noise, and abut the accelerometer 620 against the target product to detect vibration. The audio acquisition component 610 and the accelerometer 620 are both installed on the periphery of the positioning stage 400;

[0060] Exemplarily, during the test, continuous noise detection is carried out through the audio acquisition component 610. In order to improve the detection accuracy, the motor test equipment further includes a sound insulation box. The first sliding stage assembly and the second sliding stage assembly are both installed in the sound insulation box, so as to reduce the interference of environmental noise. Please refer to Figure 4, the accelerometer 620 is connected to a lifting and rotating mechanism 621. The lifting and rotating mechanism 621 adopts a cylinder-driven structure. In some application examples, the lifting and rotating mechanism 621 is installed on the base 100. Or, in some other application examples, the lifting and rotating mechanism 621 is installed on the top plate of the soundproof box. The lifting and rotating mechanism 621 is used to drive the accelerometer 620 to switch between a first working position and a second working position. The first working position and the second working position are located on different height planes. The lifting and rotating mechanism 621 has two action logics of lifting and rotating. The lifting and rotating mechanism 621 drives the accelerometer 620 to rotate around an axis and descend to switch from the second working position to the first working position. Among them, the accelerometer 620 abuts against the target product at the first working position to detect vibration of the target product. The second working position of the accelerometer 620 is located above the adjacent side of the positioning stage 400, which can avoid the placement trajectory of the target product and is beneficial to installing the target product on the positioning stage 400.

[0061] S130. Control the accelerometer 620 to stop vibration detection, and control the intermediate stage 300 to switch to a rigid connection state, that is, abut against the side of the carrier plate 320 through at least two clamping members 340;

[0062] Exemplarily, after the vibration detection is completed, control the accelerometer 620 to stop signal acquisition, that is, stop vibration detection. Abut against the side of the carrier plate 320 through at least two clamping members 340 to make the intermediate stage 300 switch to a rigid connection state, that is, the carrier plate 320 is connected to the bottom plate 310 through the clamping members 340. Among them, please refer to Figure 5 and Figure 6 , the abutting end of the clamping member 340 is provided with a first wedge surface 341, and the side of the carrier plate 320 is provided with a second wedge surface 321. The first wedge surface 341 and the second wedge surface 321 are in movable abutment. During the test, the target product will continuously generate vibration and conduct the vibration to the carrier plate 320 through the positioning stage 400, so that there is a tendency of relative movement between the carrier plate 320 and the clamping member 340. The first wedge surface 341 abuts against the second wedge surface 321, which can limit the movement of the carrier plate 320 in the longitudinal direction and the horizontal direction, thereby improving the connection reliability between the carrier plate 320 and the clamping member 340. Moreover, compared with machining mating structures such as positioning holes and positioning grooves on the carrier plate 320, the design of the second wedge surface 321 can avoid the gap between the clamping member 340 and the carrier plate 320 caused by machining errors, resulting in unstable abutment.

[0063] It should be noted that the abutting direction of the clamping member 340 is from the side of the carrier plate 320 towards the center of the carrier plate 320, that is, the clamping member 340 applies a horizontal abutting force to the side of the carrier plate 320, thereby clamping the carrier plate 320 and preventing the carrier plate 320 from continuously applying pressure to the shock absorber 330 in the rigid connection state. Otherwise, the shock absorber 330 is prone to fatigue and the shock absorption effect is reduced.

[0064] S140. Drive the second slide 220 to move through the slide driving mechanism 221 so that the torque sensor 700 is connected to the rotating shaft of the target product.

[0065] Exemplarily, 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. Drive the second slide 220 to move through the slide driving mechanism 221 so that the second slide 220 moves towards the direction close to the first slide 210. The target product is installed on the positioning carrier 400, and the rotating shaft of the target product points to the torque sensor 700, while the torque sensor 700 is installed on the second slide 220. The second slide 220 drives the torque sensor 700 to move synchronously towards the direction close to the first slide 210, which can connect the torque sensor 700 to the rotating shaft of the target product. It is worth mentioning that the second slide 220 and the pushing assembly 120 are distributed on opposite sides of the first slide 210. The pushing assembly 120 abuts against the first slide 210 and provides a reaction 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.

[0066] S150. Control the retraction of the pushing assembly 120 and drive the second slide 220 to continue to move through the slide driving mechanism 221, so as to drive one of the first slide 210, the intermediate carrier 300, the positioning carrier 400 and the target product to abut against the first pressure detection assembly 130. The first pressure detection assembly 130 and the second slide 220 are distributed on opposite sides of the first slide 210.

[0067] Exemplarily, the pushing component 120 is controlled to retract so that the pushing component 120 disengages from the first sliding table 210, thereby creating a moving space for the first sliding table 210. The sliding table driving mechanism 221 drives the second sliding table 220 to move. Since the torque sensor 700 is connected to the rotating shaft of the target product and the intermediate stage 300 is in a rigid connection state, the torque sensor 700 can apply an axial thrust to the target product during the movement, and the target product can drive the first sliding table 210 to move synchronously until the first sliding table assembly or the target product abuts against the first pressure detection component 130, and the axial thrust is monitored through the first pressure detection component 130. Among them, according to the different installation heights of the first pressure detection component 130, the abutting positions of the first sliding table assembly and the first pressure detection component 130 are different. For example, one of the first sliding table 210, the intermediate stage 300, the positioning stage 400, and the target product abuts 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 sliding table 210, the first sliding table 210 can abut against the first pressure detection component 130 during the movement; another example is that if the installation height of the first pressure detection component 130 is adapted to the target product, during the movement of the first sliding table 210, the target product moves synchronously with the first sliding table 210 and thus abuts against the first pressure detection component 130. In this way, the working condition in which the target product is subjected to an axial thrust can be simulated.

[0068] In this way, through the audio acquisition component 610, continuous noise detection can be performed on the test process. The intermediate stage 300 can be switched between a flexible connection and a rigid connection to meet the test conditions under different working conditions. The sliding table driving mechanism 221 drives the second sliding table 220 to move to realize the switching between the no-load and axial force-bearing working conditions. During the test process, data can be collected through the audio acquisition component 610 and the accelerometer 620, and multiple functions of the motor can be continuously detected.

[0069] Step S140: The second sliding table 220 is driven to move by the sliding table driving mechanism 221 so that the torque sensor 700 is connected to the rotating shaft of the target product. Before this, it also includes: The displacement sensor 630 is abutted against the rotating shaft of the target product to detect the shaft yaw, and the displacement sensor 630 is arranged on the periphery of the positioning stage 400.

[0070] Exemplarily, please refer to Figure 4, the displacement sensor 630 is connected to a second lifting drive member 631. Considering the requirements of miniaturization design, the second lifting drive member 631 is located above the positioning stage 400. For example, the motor testing device further includes a sound insulation box. Both the first slide assembly and the second slide assembly are installed in the sound insulation box, and the second lifting drive member 631 is installed on the top of the sound insulation box, which can save the layout space of the base 100, make the layout between each mechanism more compact, and achieve miniaturization design. The second lifting drive member 631 adopts a cylinder drive type structure and is used to drive the displacement sensor 630 to perform lifting motion. For example, in the initial state, the displacement sensor 630 is located above the rotating shaft of the target product. When shaft yaw detection is required, the second lifting drive member 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 yaw detection on the target product through the displacement sensor 630.

[0071] Step S150, control the retraction of the pushing component 120, and drive the second slide 220 to continue to move through the slide driving mechanism 221, so as to drive one of the first slide 210, the intermediate stage 300, the positioning stage 400 and the target product to abut against the first pressure detection component 130. Before and / or after that, it further includes: detecting the torque through the torque sensor 700, and / or detecting the rotational speed through the photoelectric sensor 730 and the code disk 720.

[0072] Exemplarily, before step S150, the no-load working condition of the target product is simulated, the torque of the target product under the no-load working condition is detected through the torque sensor 700, and the rotational speed of the target product under the no-load working condition can be detected by the cooperation of the code disk 720 and the photoelectric sensor 730. Among them, the code disk 720 is installed on the torque sensor 700, the target product drives the code disk 720 to rotate through the torque sensor 700, the code disk 720 is provided with alternately arranged light-transmitting parts and light-shielding parts, the code disk 720 triggers the detection signal of the photoelectric sensor 730 during rotation, and according to the number of signal triggers of the photoelectric sensor 730 per unit time, the rotational speed of the target product can be determined. In practical applications, the test items can be selected according to actual needs. For example, detecting the torque through the torque sensor 700, or detecting the rotational speed through the photoelectric sensor 730 and the code disk 720, or detecting the torque through the torque sensor 700 and also detecting the rotational speed through the photoelectric sensor 730 and the code disk 720.

[0073] After step S150, the axial force working condition of the target product is simulated, the torque of the target product under the axial force working condition is detected through the torque sensor 700, and the rotational speed of the target product under the axial force working condition can be detected by the cooperation of the code disk 720 and the photoelectric sensor 730.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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:

[0080] S210. Install the target product on the positioning stage 400 and provide an excitation signal for forward or reverse rotation to the target product. The intermediate stage 300 is in a rigid connection state.

[0081] Exemplarily, different from the above application example, before starting the test, the intermediate stage 300 is in a rigid connection state, that is, at least two clamping members 340 abut against the side of the carrier plate 320, so that the carrier plate 320 is connected to the bottom plate 310 through the clamping members 340. In the rigid connection state, the target product is stably placed to facilitate subsequent connection with the torque sensor 700.

[0082] S220. Control the pushing component 120 to abut against the first sliding table 210, and drive the second sliding table 220 to move through the sliding table driving mechanism 221, so that the torque sensor 700 is connected to the rotating shaft of the target product.

[0083] Exemplarily, both the first sliding table 210 and the second sliding table 220 are connected to the first slide rail 110. By driving the second sliding table 220 to move through the sliding table driving mechanism 221, the second sliding table 220 moves towards the direction close to the first sliding table 210. The target product is installed on the positioning stage 400, and the rotating shaft of the target product points to the torque sensor 700, while the torque sensor 700 is installed on the second sliding table 220. The second sliding table 220 drives the torque sensor 700 to move synchronously towards the direction close to the first sliding table 210, which can connect the torque sensor 700 to the rotating shaft of the target product, and the hysteresis brake provides a preset load greater than zero. It is worth mentioning that the second sliding table 220 and the pushing component 120 are distributed on opposite sides of the first sliding table 210. The pushing component 120 abuts against the first sliding table 210 and provides a reverse force for the first sliding table 210, which can prevent the second sliding table 220 from driving the first sliding table 210 to move in the same direction.

[0084] S230. Control the pushing component 120 to retract, and drive the second sliding table 220 to continue to move through the sliding table driving mechanism 221, so as to drive one of the first sliding table 210, the intermediate stage 300, the positioning stage 400 and the target product to abut against the first pressure detection component 130.

[0085] Exemplarily, when the torque sensor 700 is connected to the rotating shaft of the target product, the pushing assembly 120 is controlled to retract so that the pushing assembly 120 disengages from the first sliding table 210, thereby avoiding the moving space of the first sliding table 210. The sliding table driving mechanism 221 drives the second sliding table 220 to move. Since the torque sensor 700 is connected to the rotating shaft of the target product and the intermediate carrier 300 is in a rigid connection state, the torque sensor 700 can apply an axial thrust to the target product during the movement, and the target product can drive the first sliding table 210 to move synchronously until the first sliding table assembly or the target product abuts against the first pressure detection assembly 130, and the axial thrust is monitored through the first pressure detection assembly 130. Among them, according to the installation height of the first pressure detection assembly 130, one of the first sliding table 210, the intermediate carrier 300, the positioning carrier 400, and the target product abuts against the first pressure detection assembly 130 movably.

[0086] S240. Start the audio acquisition component 610 to detect noise;

[0087] Exemplarily, the audio acquisition component 610 performs continuous noise detection on the target product during the test. To improve the detection accuracy, the motor test equipment further includes a sound insulation box, and both the first sliding table assembly and the second sliding table assembly are installed in the sound insulation box, thereby reducing the interference of environmental noise.

[0088] S250. Drive the second sliding table 220 to reset through the sliding table driving mechanism 221 and reset the first sliding table 210 to the initial position through the pushing assembly 120;

[0089] Exemplarily, after completing various tests under the axial force condition, the test can be switched to the no-load condition. The second sliding table 220 and the first sliding table 210 are reset, and the axial force applied to the target product can be cancelled, so that the target product enters the no-load condition.

[0090] S260. Control the intermediate carrier 300 to switch to a flexible connection state, and abut the accelerometer 620 against the target product to detect vibration.

[0091] Exemplarily, to reduce the influence of external environmental factors, control the intermediate carrier 300 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 absorber 330. The shock absorber 330 has a shock absorption function and can isolate the external vibration conducted through the first sliding table 210. To make full use of the layout space, the positioning carrier 400 supports from the bottom side of the target product and clamps from both sides, and the accelerometer 620 presses down from the upper side of the target product. The installation method of the accelerometer 620 can refer to the above, and will not be elaborated here.

[0092] In this way, the audio acquisition component 610 can continuously detect noise during the test process. The intermediate stage 300 can switch between flexible connection and rigid connection to meet the test conditions under different working conditions. The second stage 220 is driven by the stage driving mechanism 221 to move to realize the switching between no-load and axial force-bearing working conditions. During the test process, data can be collected through the audio acquisition component 610 and the accelerometer 620, and continuous detection of multiple functions of the motor can be performed.

[0093] Step S240: Start the audio acquisition component 610 to detect noise. After that, it further includes: detecting torque through the torque sensor 700, and / or detecting rotational speed through the photoelectric sensor 730 and the code disk 720.

[0094] Exemplarily, under the axial force-bearing working condition of simulating the target product, before the intermediate stage 300 switches the connection state and conducts vibration detection, torque detection under the load application condition of the target product is performed through the torque sensor 700, and rotational speed detection under the load application condition of the target product can be performed by the cooperation of the code disk 720 and the photoelectric sensor 730. Among them, the stage driving mechanism 221 can adjust the position of the second stage 220 to adjust the axial force applied to the target product, so as to realize the test under different axial forces.

[0095] Step S240: Start the audio acquisition component 610 to detect noise. After that, it further includes: abutting the displacement sensor 630 against the rotating shaft of the target product to detect shaft yaw.

[0096] Exemplarily, controlling the intermediate stage 300 to switch to the flexible state is to improve the detection accuracy during vibration detection. Before performing vibration detection, shaft yaw detection of the target product can also be performed through the displacement sensor 630. The installation method of the displacement sensor 630 can refer to the above text and will not be elaborated here.

[0097] Step S260: Control the intermediate stage 300 to switch to the flexible connection state. Before that, it further includes: abutting the displacement sensor 630 against the rotating shaft of the target product to detect shaft yaw.

[0098] Exemplarily, according to different test requirements, shaft yaw detection of the target product can be performed under both the simulated axial force-bearing working condition and the no-load working condition. Step S260 is to simulate the no-load force working condition of the target product. If shaft yaw detection is not performed under the axial force-bearing working condition, control the displacement sensor 630 to move and abut the displacement sensor 630 against the rotating shaft of the target product to perform shaft yaw detection; if shaft yaw detection has been performed under the axial force-bearing working condition, that is, the displacement sensor 630 has been abutted against the rotating shaft of the target product, the displacement sensor 630 can be started to perform shaft yaw detection.

[0099] In some application examples, step S250, driving the second slide table 220 to reset by the slide table driving mechanism 221 and driving the first slide table 210 to reset to the initial position by the pushing component 120, includes:

[0100] Driving the second slide table 220 to reset by the slide table driving mechanism 221 to separate the torque sensor 700 from the rotating shaft of the target product; controlling the pushing component 120 to abut against the first slide table 210 to push the first slide table 210 to the initial position.

[0101] Exemplarily, after all test items are completed, the second slide table 220 resets, the torque sensor 700 is separated from the rotating shaft of the target product, the thrust applied to the target product is withdrawn, the pushing component 120 extends and abuts against the first slide table 210 to push the first slide table 210 to the initial position, so that the target product returns to the initial position to facilitate the blanking of the target product.

[0102] Or, in some other application examples, step S250, driving the second slide table 220 to reset by the slide table driving mechanism 221 and driving the first slide table 210 to reset to the initial position by the pushing component 120, includes:

[0103] Driving the second slide table 220 to move by the slide table driving mechanism 221 and pushing the first slide table 210 by the pushing component 120 to push the first slide table 210 to the initial position, and the rotating shaft of the target product and the torque sensor 700 remain connected;

[0104] After resetting to the initial position, detecting the torque through the torque sensor 700, and / or detecting the rotational speed through the photoelectric sensor 730 and the code disk 720.

[0105] Exemplarily, after the test of the axial force application condition is completed, the slide table driving mechanism 221 and the pushing component 120 act synchronously to move the second slide table 220 and the first slide table 210 to the target positions respectively. For example, the first slide table 210 moves to the initial position, and the position of the second slide table 220 can make the torque sensor 700 connected to the rotating shaft of the target product to facilitate torque detection through the torque sensor 700, or rotational speed detection through the photoelectric sensor 730 and the code disk 720. Of course, both torque detection and rotational speed detection can be performed.

[0106] This embodiment can automatically and continuously perform no-load tests and axial force application tests on the target product, with a high degree of automation. It can perform multiple tests under different working conditions. During the test process, there is no need to transfer the target product between different devices, the operation is simple, the transfer time is saved, and it is beneficial to improve the test efficiency.

[0107] In addition, the motor testing 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 achieve continuous testing of multiple functions under different working conditions. However, considering that the functional testing of structures such as the hysteresis brake and the radial thrust mechanism is not the key solution of this embodiment, therefore, this embodiment will not be elaborated.

[0108] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

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).

Images