摘要：References for theory analysis, quality prediction, and automatic control can be provided by testing the displacement variation of the media in mass finishing process with the parallel spindle using CCD laser displacement sensor, calculating the whole velocity and impact velocity of the media on workpieces, and then finding the distribution law of the media velocity. The media velocities under different test conditions were analyzed, and the probability distribution curves of the whole velocity and impact velocity were drawn accordingly. It is found that the whole velocity increases with increasing rotation speed of the drum or being far from the drum rotation center. But the effect of rotation speed of the drum on impact velocity is not significant. The media velocity is insensitive to the finishing depth inside the media. The probability density distribution of the whole velocity and impact velocity is not consistent at each sampling point. The majority obey the Gauss distribution and the extreme value distribution. The extreme value distribution of the media increases with the increase in the rotation speed, illustrating more intense dispersion of the test data and wider coverage of the media velocity.
关键词：Mass finishing; media; velocity; kinematic characteristic; probability density distribution
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