Abstract
In order to compare the vibration properties of different turning materials, we used the CNC lathe and carried out some turning experiments on the aluminum bar and nylon rod with the same dimension. By vibration signal analyzer and piezoelectric acceleration sensor, we picked the vibration signals of the upper tool surface under different turning parameters. By the frequency domain analyses, we have obtained the changing rule of the average value Ï of the maximum auto-power spectral density in all turning experiments of the two experimental schemes. Experimental studies show that: (1) when the spindle speed is 1000 r/min, the tool vibration corresponding to the two kinds of materials is the smallest. (2) With the increase of the feed rate, the self power spectrum values of tool vibration during aluminum turning continue to decrease, while the values increase during nylon turning. (3) When the spindle speed is more than 700r/min, both the average values Ï corresponding to the two turning material reduced and at last their values tended to the same.
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