超高速点磨削力数学模型的建立与仿真

Mathematics modeling and simulation on grinding forces during ultra-high speed point grinding

结合超高速点磨削的特点,将磨粒简化为圆锥形,建立了超高速点磨削力数学模型。通过对磨削力的Matlab仿真,分析了磨削参数和点磨削变量角α和β对磨削力的影响。结果表明:点磨削力随着砂轮线速度的增加而减小,随工件速度、磨削深度、纵向进给速度的增加而增大。点磨削力随磨削变量角α和β的增大而降低,其中,β对降低磨削力的贡献要大于α。

By simplifying the geometric shape of abrasive grain in a cone-shape,and in consideration of the characteristics of ultra-high speed point grinding,the theory mathematics models was educed on ultra-high speed point grinding force.By MATLAB simulation,the effect of grinding parameters and variable angle αβ to grinding force were analyzed.The results showed that the forces during point grinding decreased with the increase of wheel velocity,and increased with the increase of workpiece speed,grinding depth,and vertical feed speed.The grinding forces during ultra-high speed point grinding decreased with the increase of grinding variable-angle α β,the variable-angle β was more significant than the variable-angle α for decreasing grinding forces.