40Cr超高速磨削工艺实验研究

Experimental Study on the Super-High Speed Grinding Process of 40Cr

采用CBN砂轮，在砂轮线速度为90～210m／s的磨削条件下，对40Cr进行了超高速磨削工艺实验．分析了在超高速磨削过程中砂轮周围气障对磨削过程的影响。讨论了砂轮线速度、切削深度、工件速度等工艺参数对磨削力、工件表面粗糙度、比磨削能的影响．实验表明，在高速超高速磨削过程中，砂轮速度提高使得磨削力大大减小，工件表面粗糙度值下降，工件表面质量得到提高；加大切削深度而工件表面粗糙度值增加不大，大大提高了磨削效率，同时也保证了工件表面质量．

A process test of the super-high speed grinding for 40Cr was done by CBN grinding wheel at the speed of 90-210 m/s . This paper analyzed the influence of the air bonds around the grinding wheel on the super-high speed grinding technological experiment process, and the influence of various process parameters, wheel speed, wheel depth of cut, workpiece velocity on the grinding force, surface roughness and the specific grinding energy were discussed. It has been shown that, during the super-high speed grinding, the grinding force is reducing greatly with higher wheel speed, while the surface roughness is reducing, so the workpiece gets better surface finishing; the wheel depth of cut is increasing and the surface roughness is increasing very little, the pro- ductive efficiency is rising greatly and the surface finishing of workpiece is guaranteed.