C标车外圆时间定额标准 车床时间定额标准设备型号C616650图示刚度系数L/D10时使用：K=0.0006（L/D）2+1车外圆机床型号光洁（粗植）度计算公式C6164T不=（0.000295D+0.0021）LK+0.655T不=（0.00049D+0.00328）LK+0.896T不=（0.000733D+0.00492）LK+1.37C6204T不=（0.00019D+0.00119）LK+0.895T不=（0.000395D+0.00187）LK+1.386T不=（0.000745D+0.00352）LK+2.01C6304T不=（0.000232D+0.00184）LK+1.065T不=（0.000438D+0.00329）LK+1.766T不=（0.000685D+0.00575）LK+2.45C6504T不=（0.000151D+0.00263）LK+2.135T不=（0.000302D+0.0047）LK+3.326T不=（0.000532D+0.00855）LK+4.64修正系数（K）塑料尼龙件铜铭、胶木件铸铁球墨铸铁45#、40Cr0.60.70.80.91锻件铸钢、调质钢淬火钢不锈钢断续切削1.11.31.41.51.4