Motor performance parameter detection device

Abstract

The utility model provides a motor performance parameter detection device, and relates to the field of motor detection. The motor performance parameter detection device comprises a rack, a motor, a contour measuring instrument and a rotating disc, the motor and the contour measuring instrument are both arranged on the rack, the rotating disc is connected with an output shaft of the motor, the rotating disc is provided with a calibration mark, the rotating disc rotates under the driving action of the output shaft, and the rotating disc is connected with the contour measuring instrument. The contour measuring instrument detects the position and height of the calibration mark. According to the invention, the turntable is used as the load of the motor to detect the performance of the motor under the actual load, and the calibration mark is arranged on the turntable, and then the contour measuring instrument is used for measuring the calibration mark to detect the transverse horizontal value of repeated rotation positioning and the height value of repeated rotation positioning. Therefore, the performance of the motor in the actual use process can be determined.

Description

Technical Field

[0001] This application relates to the field of motor testing, and more specifically, to a device for testing motor performance parameters. Background Technology

[0002] With the rapid development of industrial automation, automated equipment is increasingly widely used in various industries, and the requirements for the precision and stability of this equipment are also becoming increasingly stringent. Automated equipment typically contains various moving parts, such as stepper motors, servo motors, linear motors, and DD motors (Direct Drive Motors). Among them, DD motors, due to their high precision, high response speed, and high torque density, are widely used in equipment requiring high-precision positioning and stable operation, such as semiconductor manufacturing equipment and precision machining equipment. The performance of DD motors directly affects the precision of key components and the overall stability of the machine tool; therefore, accurate evaluation of their performance is crucial.

[0003] In existing technologies, the accuracy performance of DD motors is typically measured directly on the output shaft of the DD motor at the factory using a laser interferometer. The laser interferometer utilizes the principle of light interference, analyzing the spectrum of reflected light to accurately measure the rotation angle and position error of the DD motor, thereby evaluating key performance indicators such as repeatability and axial height difference during repeatability. This measurement method provides high-precision results under laboratory or no-load conditions, effectively verifying the performance of the DD motor under ideal conditions. However, in practical applications, DD motors usually need to bear certain loads and operate under complex conditions. Therefore, it is necessary to measure the lateral horizontal value and height value of the repeatability during rotational positioning under real load conditions to determine the performance of the DD motor in actual use. Utility Model Content

[0004] The purpose of this application is to provide a motor performance parameter testing device that can detect the lateral horizontal value and the height value of repeated rotational positioning of a motor under actual load.

[0005] This utility model provides a motor performance parameter testing device, which includes a frame, a motor, a profile measuring instrument, and a turntable. The motor and the profile measuring instrument are both mounted on the frame. The turntable is connected to the output shaft of the motor. The turntable is provided with calibration marks. The turntable rotates under the drive of the output shaft. The profile measuring instrument detects the position and height of the calibration marks.

[0006] In an optional embodiment, the turntable includes a body, a calibration block, and a counterweight. The body is connected to the output shaft, the calibration mark is set on the calibration block, and the counterweight and the calibration block are spaced apart on the body along the circumferential direction of the body.

[0007] In an optional implementation, the calibration mark is located on the side of the calibration block away from the body, and the calibration mark is configured as a cross-shaped groove.

[0008] In an optional embodiment, the number of calibration blocks is one, and the number of counterweight blocks is multiple, with the multiple counterweight blocks and the one calibration block arranged in a circular array around the output shaft on the body.

[0009] In an optional embodiment, both the calibration block and the counterweight block are located at the edge of the body.

[0010] In an optional embodiment, the body is provided with balancing holes, and a plurality of balancing holes are arranged in a circular array around the output shaft.

[0011] In an optional embodiment, the frame is provided with a support platform, the support platform is provided with an opening, the output shaft of the motor passes through the opening, and the contour measuring instrument is mounted on the support platform.

[0012] Compared to existing technologies, the beneficial effects of this application are:

[0013] This application uses a turntable as a load for the motor to test the motor's performance under actual load. Furthermore, this application sets calibration marks on the turntable and then uses a profile measuring instrument to measure the calibration marks to detect the lateral horizontal value and the height value of repeated rotational positioning, so as to determine the motor's performance in actual use. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A three-dimensional structural schematic diagram of the motor performance parameter detection device in some embodiments is shown;

[0016] Figure 2 A schematic diagram of the planar structure of the motor performance parameter detection device in some embodiments is shown;

[0017] Figure 3 It shows Figure 2 Schematic diagram of the AA section;

[0018] Figure 4 A three-dimensional structural schematic diagram of the calibration block is shown in some embodiments;

[0019] Figure 5 A schematic diagram of the detection range of the calibration marks is shown in some embodiments;

[0020] Figure 6 It shows Figure 5 Schematic diagram of the cross-section of BB.

[0021] Explanation of key component symbols:

[0022] 100-Frame; 110-Bearing platform; 111-Opening; 200-Profile measuring instrument; 300-Turntable; 310-Body; 311-Balance hole; 320-Calibration block; 321-Calibration mark; 330-Counterweight; 400-Electrical module; 500-Motor; R-Measuring range; H-Axial height value; D-First distance; d-Second distance. Detailed Implementation

[0023] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0024] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0026] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0027] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0028] Example 1

[0029] Please see Figures 1 to 3 This embodiment is applicable to detecting the performance parameters of motor 500 when driving a load. The aforementioned performance includes the lateral horizontal value and the height value of repeated rotation positioning of motor 500.

[0030] This embodiment provides a motor performance parameter testing device, which includes a frame 100, a profile measuring instrument 200, a turntable 300, an electrical module 400, and a motor 500. The profile measuring instrument 200, electrical module 400, and motor 500 are all mounted on the frame 100, and the turntable 300 is mounted on the output shaft of the motor 500. The electrical module 400 drives the motor 500 to rotate multiple times. The turntable 300 serves as the load for the motor 500. The profile measuring instrument 200 detects the horizontal position and the height position of a certain detection position on the turntable 300 after multiple rotations. The frame 100 has a motor mounting position for mounting the motor 500. It is understood that after installation, the motor 500 is fixedly connected to the frame 100, and the output shaft of the motor 500 rotates relative to the frame 100.

[0031] Specifically, the frame 100 is provided with a support platform 110, and the support platform 110 is provided with an opening 111. The opening 111 is connected to the motor mounting position, and the output shaft of the motor passes through the opening. In this embodiment, the motor 500 is placed in the motor mounting position for installation.

[0032] The profile measuring instrument 200 is mounted on the support platform 110 of the frame 100. The profile measuring instrument 200 can quickly and accurately measure the surface profile, size, shape, position, distance and other parameters of an object through laser or optical sensors. In this embodiment, the profile measuring instrument 200 is a Keyence profile measuring instrument.

[0033] In this embodiment, the contour measuring instrument 200 is placed on the support platform 110, which reduces the vibration impact of the motor 500 rotation on the contour measuring instrument 200 and improves the detection accuracy.

[0034] The turntable 300 is fixedly connected to the output shaft of the motor 500. When the motor 500 is started, the output shaft of the motor 500 rotates, thereby driving the turntable 300 to rotate accordingly. When the motor 500 stops rotating, the turntable 300 also stops rotating.

[0035] Specifically, the turntable 300 includes a body 310, a calibration block 320, and a counterweight 330. The body 310 is connected to the output shaft of the motor 500. The calibration block 320 is mounted on the body 310, and the counterweight 330 is mounted on the body 310 and is spaced apart from the calibration block 320 along the circumference of the body 310. The weight of the counterweight 330 is the same as the weight of the calibration block 320.

[0036] Please see Figure 2 , Figure 4 and Figure 5 The calibration block 320 is equipped with calibration marks 321. Driven by the output shaft of the motor 500, the calibration block 320 rotates relative to the frame 100 around the output shaft of the motor 500. After the turntable 300 rotates a certain angle, the position and height of the calibration marks 321 are detected by the measuring range R of the profile measuring instrument 200, thereby obtaining the lateral horizontal value and height value of the turntable 300 after rotating a certain angle.

[0037] Please see Figure 2 , Figure 4 and Figure 6 The calibration mark 321 is located on the side of the calibration block 320 away from the body 310, and the calibration mark 321 is configured as a cross-shaped groove. In this embodiment, the calibration mark 321 is located on the upper surface of the calibration block 320, which facilitates the contour measuring instrument 200 to perform measurements. The measurements include the height value H in the Z-axis direction and the lateral horizontal value of the cross-shaped groove in the X-axis direction on the calibration block 320. The Z-axis is the vertical direction of the calibration block 320, and the X-axis is the length direction of the measurement range R of the contour measuring instrument 200.

[0038] In some embodiments, there is one calibration block 320 and multiple counterweight blocks 330, which are arranged in a circumferential array on the body 310 around the output shaft of the motor 500. For example, there are seven counterweight blocks 330, which are arranged in a circumferential array on the upper surface of the body 310 around the output shaft of the motor 500.

[0039] For ease of description and understanding, this embodiment uses a 180° rotation as an example, performing multiple repeated rotational positioning tests to detect the lateral horizontal value and the height value of the repeated rotational positioning when the motor 500 rotates 180° under load. Specifically, the 0° position is the position of the motor 500 after being reset by the origin sensor through a reset operation; this position is related to the location of the origin sensor. The 180° position is the position of the motor 500 after receiving the 180° rotation angle command output by the electrical module 400.

[0040] Please see Figure 2 , Figure 3 and Figure 6 By setting the installation position of the profile measuring instrument 200, after the motor 500 starts and rotates 180°, the calibration mark 321 on the calibration block 320 falls within the measurement range R of the profile measuring instrument 200. The profile measuring instrument 200 is used to detect the horizontal position in the X direction and the height position in the Z direction. Afterwards, the motor 500 can be reset and rotated 180° again, and the horizontal and height position detections can be repeated multiple times.

[0041] Along the Z-axis, the cursor within the measurement range R of the profile measuring instrument 200 is positioned in the groove of the cross groove, and the height value H inside the groove is measured. Multiple rotations and repositioning measurements can yield the height value H after multiple rotations.

[0042] Along the X-axis, the cursor within the measurement range R of the profile measuring instrument 200 is placed in the groove of the cross groove. At this time, because there is a drop between the two edges of the cross groove, there will be different height values ​​and width ranges of each height value. The distance between the two edges, namely the first distance D and the second distance d, can be obtained; as well as the width range of the cross groove.

[0043] For example: The measurement range R of the contour measuring instrument 200 is set to 0-20mm from left to right. Within the measurement range R, three height values ​​will be detected. The second height value is the height within the cross groove, and the first and third height values ​​are the height values ​​on either side of the cross groove. The width of the first height value is the first distance D; the width of the third height value is the second distance d. Using the first distance D as the horizontal value in the X direction, after repeated rotation and positioning, the value of the first distance D can be measured to obtain multiple sets of horizontal values; by repeatedly measuring the height value H within the cross groove, multiple sets of height values ​​can be obtained.

[0044] In some embodiments, there are multiple calibration blocks 320 and multiple counterweight blocks 330. For example, there are two calibration blocks 320, which are symmetrically distributed at both ends of the diameter of the body 310. If the position of one calibration block 320 is 0°, then the position of the other calibration block 320 is 180°. Multiple counterweight blocks 330 are evenly distributed on the body 310.

[0045] It is understandable that if the load on motor 500 is unbalanced, the rotation of turntable 300 will vibrate up and down after motor 500 is started, resulting in abnormal vibration. Therefore, as long as the mass distribution at each position of turntable 300 is uniform and the load on motor 500 is balanced, there is no limit to the number of calibration blocks 320 and counterweight blocks 330.

[0046] In this embodiment, the turntable 300, or in combination with the calibration block 320 and the counterweight block 330, serves as the load for the motor 500 to detect the parameters of the motor 500 under actual load. In this embodiment, calibration marks 321 are set on the turntable 300, and the position of the calibration marks is detected by the profile measuring instrument 200 to obtain the lateral horizontal value and the height value of the repeated rotation positioning of the motor 500. This allows the actual performance of the motor 500 to be calculated and analyzed by connecting to an external processor.

[0047] In addition, this embodiment can achieve repeated measurements without repeated disassembly and assembly, reducing the workload of disassembly and assembly, reducing the difficulty of detection, and improving detection efficiency.

[0048] Example 2

[0049] Please see Figure 2 and Figure 3 Based on Embodiment 1, this embodiment is improved in that the body 310 includes a first surface and a second surface, the first surface and the second surface are disposed opposite to each other, the second surface is closer to the motor 500 relative to the first surface, the calibration block 320 and the counterweight block 330 are both disposed on the first surface, the first surface is the upper surface of the body 310, and the second surface is the lower surface of the body 310.

[0050] Both the calibration block 320 and the counterweight block 330 are located at the edge of the body 310. This location is closer to the actual working conditions of the motor 500, and more realistically reflects the required accuracy of actual work, ensuring that the motor 500 can detect more realistic horizontal and vertical values ​​in actual work.

[0051] The main body 310 is provided with balance holes 311. Multiple balance holes 311 are arranged in a circular array around the first axis. On the one hand, the balance holes 311 have a balancing function, so that the mass distribution at each position of the turntable 300 is uniform. On the other hand, the balance holes 311 are through holes, which can reduce the weight of the main body 310 and reduce the assembly difficulty.

[0052] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0053] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A motor performance parameter testing device, characterized in that, The device includes a frame, a motor, a profile measuring instrument, and a turntable. The motor and the profile measuring instrument are both mounted on the frame. The turntable is connected to the output shaft of the motor and has calibration marks. The turntable rotates under the drive of the output shaft, and the profile measuring instrument detects the position and height of the calibration marks.

2. The motor performance parameter testing device as described in claim 1, characterized in that, The turntable includes a body, a calibration block, and a counterweight. The body is connected to the output shaft. The calibration mark is set on the calibration block. The counterweight and the calibration block are arranged at intervals on the body along the circumferential direction of the body.

3. The motor performance parameter testing device as described in claim 2, characterized in that, The calibration mark is located on the side of the calibration block away from the body, and the calibration mark is configured as a cross-shaped groove.

4. The motor performance parameter testing device as described in claim 2, characterized in that, The number of calibration blocks is one, and the number of counterweight blocks is multiple. The multiple counterweight blocks and the one calibration block are arranged in a circular array around the output shaft on the body.

5. The motor performance parameter testing device as described in claim 4, characterized in that, Both the calibration block and the counterweight block are located at the edge of the main body.

6. The motor performance parameter testing device as described in claim 2, characterized in that, The body is provided with balancing holes, and a plurality of balancing holes are arranged in a circular array around the output shaft.

7. The motor performance parameter testing device according to any one of claims 1 to 6, characterized in that, The frame is provided with a support platform, the support platform is provided with an opening, the output shaft of the motor passes through the opening, and the contour measuring instrument is mounted on the support platform.

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