绿色制造, 悬浮粉尘颗粒, 空间分布, 干切削

After analyzing the mechanism and influence factors of generation and dispersion of the machining dust, the present work proposed to use relative indexes to describe the characteristics of spatial distribution of the dust. Experiments were designed and conducted to measure the dust concentrations at several different spatial spots during machining processes at different cutting speeds near the machine tool. The intuitive contour lines of the concentrations were acquired through the data processing by cubic interpolation. And the CV(coefficient of variation) for the data at different direction or at the individual direction but different distance away from the cutting spot were calculated. The numerical analysis shows that the spatial concentration distribution of the dust has obvious directivity and gradient when the cutting speeds are low, while the dust concentration is relatively homogeneous at all the direction and the gradient is small when the cutting speeds are high. This finding will be used as a reference for the dust controlling. 