2019
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05
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25
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76
1. Introduction:The traditional grinding machine spindle is directly started by the power frequency, and the spindle grinding wheel motor runs according to the traditional starting circuit. When there is a certain fluctuation in the grid voltage, the rotation speed of the grinding wheel spindle has a certain fluctuation, which affects the grinding precision of the workpiece. Therefore, considering the improvement of processing quality and processing efficiency, the application of variable frequency speed control technology to the grinding machine can achieve satisfactory results, but the gener...