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Guide for magnetic distribution meter
Release time:
2022-06-25
Source:
Www.fe2100.com Hunan Yongyi Technology Co., Ltd.
The multi-pole magnetic ring magnetic field distribution measuring instrument (or magnetic wave measuring instrument) is an indispensable tool for the production of multi-pole magnetic rings or rotors in the motor industry and the quality inspection of magnetic rings in related motor enterprises. As early as the late 1990 s, the relevant patent design report of this equipment was carried out in China (Shandong native: Lao Meng). In the past 10 years, about 10 domestic enterprises have begun to produce the functional products. Through the understanding of foreign related products, it is found that there are not many manufacturers of such measuring devices abroad, mainly less than 10 enterprises in Japan, South Korea and Germany. Why do users have urgent needs of products, compared with other measuring equipment related technical content is not high, but can not be well accepted by users? Where are the uncertainties? I through the understanding of users in the same industry, and the use of the same magnetic ring in different manufacturers of magnetic field distribution measuring instruments to test the same product, found some problems, here to share with the industry, hoping to help everyone.
1. overview:
multipole magnetic ringmagnetic field distribution measurementInstrument (or magnetic wave measuring instrument) is an indispensable tool for the production of multi-pole magnetic rings or rotors in the motor industry and the quality inspection of magnetic rings in related motor enterprises. As early as the late 1990 s, relevant patent design reports of this equipment were carried out in China (Shandong native: Lao Meng). In the past 10 years, about 10 domestic enterprises have begun to produce the functional products. Through the understanding of foreign related products, it is found that there are not many manufacturers of such measuring devices abroad, mainly less than 10 enterprises in Japan, South Korea and Germany. Why do users have urgent needs of products, compared with other measuring equipment related technical content is not high, but can not be well accepted by users? Where are the uncertainties? I through the understanding of users in the same industry, and the use of the same magnetic ring in different manufacturers of magnetic field distribution measuring instruments to test the same product, found some problems, here to share with the industry, hoping to help everyone.
Problems to be Solved by 2. Current Equipment
1. Control of concentricity
Since there are currently no relevant international and national testing standards for reference, the developmentTable Magnetic Distribution MeasurementThe manufacturer of the device does not have a clear goal in designing related products. As the most important concentricity technical index of surface magnetic measurement distribution, it is often ignored by many manufacturers (at present, "Ningbo XX" among the manufacturers I contact has strong regulations on this index). multipole magnetic ringTable Magnetic Distribution MeasurementIf the device cannot guarantee a higher concentricity index, it will actually lose the practical significance of detection. As a product to guide users to understand the symmetry (or uniformity) of magnetic poles, it was originally hoped to guide and improve the design of orientation or magnetizing fixture through the measurement of surface magnetic distribution. However, due to the neglect of concentricity deviation, the current situation is caused. No enterprise's test instrument has completely consistent measurement of magnetic pole width, and the difference is very large. The test equipment manufacturers used include: Shanghai Pingye Magnetic Imported Type (Self-produced Type), South Korea Shermer, Shanghai Xianda, Shanghai Hengtong, Shandong Simple Equipment, Oriental Morning View, Lianzhong Technology, Tianheng Measurement and Control and other enterprises (this work has been many years since Lianzhong Technology participated in shanghai everbright Convention and Exhibition on behalf of Lianzhong Technology). Later, the same magnetic ring was used to test Japanese equipment purchased by Ningbo Yunsheng.
2, the use of stepper motor test start-up problems need to be solved. At present, the production enterprises use the rotation of the stepper motor console to realize the test process. The chuck is installed directly on the stepper motor. From the sampled data, everyone can find that in the process of starting the measurement, at least 5 steps above the test waveform is in a stagnant or jitter state, which is related to the inertia of the motor starting. This problem can be ignored when the test accuracy is not high.
3, rotation can not really achieve the complete waveform 360 ° acquisition problem. For the multi-pole magnetic ring magnetic field distribution measuring device produced by some manufacturers, some manufacturers test the angle and magnetic field test value corresponding to the acquisition point on your waveform. It can be observed that the tested waveform has leakage point phenomenon, and the collected waveform is not closed after amplification. This is mainly the design software control defects, for the general sine wave distribution of multi-pole magnetic field measurement, the impact is not great, but for similar saddle rectangular wave distribution of the magnetic field waveform measurement, the phenomenon is more prominent.
3. the user how to understand the quality of the device (inspection method)
1. The concentricity instrument is used to check the concentricity technical index of the chuck. This is the user's ability to conduct self-inspection. If the concentricity cannot be guaranteed to a certain level or the error is large, the device can determine that there is no guiding significance for use.
2. Inspection method of sampling drop point: record the reading of gaussmeter at the initial time, and check whether the reading of gaussmeter is completely consistent with the recorded value or the deviation is very small after the test is completed. For sine wave products, the sampling point is less likely to be found, but for the saddle waveform distribution of the magnet, the magnetic field change rate of the larger position of the measurement, can be found immediately.
3. Test of waveform at startup: This is generally difficult to find. We only observe it in the process when the user requires that the waveform with XY axis can be enlarged at will. If the software has the function of report enlargement, the data near the test starting point can be effectively enlarged to check whether the waveform has a "one" waveform or a "V" waveform.
Through the above inspection methods, users can quickly determine the reliability of the equipment, in order to correctly select the products that can guide the production. The second is the content of the relevant report, which users can evaluate by testing the content of the report, which is related to the software design of the enterprise.
4.Eternal TechnologyThe FE-2100R SeriesTable Magnetic Distribution MeasurementThe equipment combines the actual needs of multi-pole magnetic ring manufacturers and motor enterprise users, through careful design of the test bench and control of the motor, to achieve accurate measurement of the surface magnetic field distribution of excellent products. It is an indispensable tool for the correct evaluation of the magnetizing accuracy of the magnet and the quality inspection of the magnetic ring. The equipment can provide test reports such as XY coordinates, P polar coordinates, 3D magnetic field distribution and harmonic analysis relative to the fundamental wave to provide accurate magnetic field distribution data for motor design. The high concentricity design and the high precision level of the probe return are the guarantee of the quality of the equipment, and the product has strong comprehensive performance. According to the current domestic and foreign markets for a number of indicators of magnetic products, to meet the permanent magnet, permanent magnet motor stator or rotor, DC magnetic field coil, electromagnet and other quality inspection.
FE-2100RBAutomatic measurement of magnetic distributionDevice Reference Picture
Surface Magnetic Field Distribution Measurement Report
Software interface screenshot
surface magnetic field distribution measurement3D Display
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