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1、较刀较削切削用量选择表高速钢及硬质合金机较刀较孔时的进给（mm/r）刀具材料加工材料校刀直径 900MPa0.15-0.350.35 0.70.551.20.65-1.50.8-1.81.0-231.2-3.2高速钢皎刀铸铁铜及 铝合金HB 1700.4 0.80.651.31.0-2.0132.61.6-3.22.1422.6-5.0硬质合金较 刀未淬硬钢0.35 0.50.40.60.5-0.70.6-0.80.7-0.90.9-1.2淬硬钢0.25-0.350.30.40.35-0.450.4-0.5铸铁HB 1700.71.10.8 1.20.9-1.41.0-1.51.25-1.81
2、.5-3.2注：1.表内进给是用于加工通孔，加工盲孔时进给曷应取为0.205mm/r。2 .最大进给最用于在钻或扩孔之后，精较孔之前的粗较孔。3 .中等进给量用于：1）粗钱之后精较H7级精度的孔；2）精链之后精较H7级精度的孔；3）对硬质合金较刀，用 于精较H8-H9级精度的孔。4 .最小进给星用于：1）抛光或布磨之前的精较孔；2）用一把校刀较H8H9级精度的孔；3）对硬质合金较刀， 用于精较H7级精度的孔。高速钢较刀粗较削的切削速度m/min(粗锐)刀具规格 (mm)结构钢、格钢、集格钢f(mm/r)0.50.60.70.81L21.41.61.82222.533.54d0=5a p=0.0
3、52421319.317.6d0=10a p=0.07521.619.217.415.913.812.3dO=15a p=0.117.415.314.112.911.19.99.28.27.77.1d0=20a p=0.12518.216.114.713.511.610.39.38.67.97.4dO=25a p=0.12516.614.813.412.210.69.48.57.87.26.7d0=30ap=0.12512.911.29.98.98.27.67.16.66.25.45.14.6d0=40a p=0.1512.110.49.18.47.57.26.76.25.75.14.74.2
4、d0=50a p=0.1511.49.98.887.36.76.35.95.44.84.44d0=60a p=0.210.79.28.27.46.86.35.95.55.14.54.13.7d0=80a p=0.259.88.57.56.86.25.85.45.14.74.13.83.4刀具规格 (mm)灰铸铁 190HBf(mm/r)0.50.60.70.811.21.41.61.822.5345d0=5a p=0.0518.917.215.914.913.312.211.310.69.99.4d0=10ap=0.07517.916.315.114.112.611.510.79.48.9d0
5、=15a p=0.115.914.513.412.611.210.39.58.98.48d0=20ap=0.12516.515.11413.111.710.79.99.28.78.37.46.7d0=25a p=0.12514.713.412.411.310.49.58.88.27.77.46.66d0=30ap=0.12512.110.89.89.18.587.66.86.25.44.8d0=40a p=0.1511.510.39.48.78.17.67.36.55.95.14.6d0=50a p=0.1511.5109.28.57.97.57.16.35.854.5d0=60a p=0.210.79.68.78.17.67.16.86.15.54.84.3d0=80a p=0.25108.98.17.57.16.76.35.65.24.54高速钢较刀较削的切削速度m/min熊钱)结构碳钢、钻钢、银拈钢灰铸铁、可锻铸铁、铜合金精度等级加工表面粗糙度 RaQim)切削速度u(m/min)灰铸铁可锻铸铁铜合金H7-H83.2 1.64581515|H7-H81.60.82348s