C标卧车车床时间定额标准C标卧车车床时间定额标准 车床时间定额标准设备型号通用工步公式钻孔T不=0.00098dL+0.006(Ld)2K+1.76扩孔(划沉孔)T不=0.00117dLK+0.68铰孔T不=0.002dLK+0.98钻扩孔(综合)T不=0.00194dL+0.006(Ld)2K+2.29钻扩铰(综合)T不=0.00415dL+0.006(Ld)2K+3.2倒直角T不=0.018(HD)0.5K倒圆角T不=0.0216(RD)0.5K钻中心孔T不=0.136dK+0.225研中心孔T不=0.28d+0.66滚花T不=0.00092DL(0.6t+0.7)K+0.52 t 网纹距切断(实心)T不=R(110.38-0.743D)K+0.22 R=半径切断(空心)T不=(R-r)(49.5-0.135D)K+0.22 r=孔半径旋风铣梯型扣T不=(0.00944DS+0.00183)LK+1.71旋风铣蜗杆T不=(0.0113DM+0.00219)LK+1.71注:旋风铣限单头工件,6;4 K=0.851 / 11 / 1