孔加工的切削参数表格

1、孔加工的切削参数及加工余量1）孔加工的切削参数表1表4中列出了部分孔加工切削用量，供选择时参考。表1 高速钢钻头加工钢件的切削用量材料强度切削用量钻头直径b=520700MPa(35、45钢)b=700900MPa(15Cr、20Cr)b=10001100MPa(合金钢)c /(m/min)f/(mm/r)c/(m/min)f/(mm/r)c/(m/min)f/(mm/r)168250.050.112300.050.18150.030.086128250.10.212300.10.28150.080.1512228250.20.312300.20.38150.150.2522508250.30

2、.4512300.30.548150.250.35表2 高速钢钻头加工铸铁的切削用量材料硬度切削用量钻头直径160200HBS200400HBS300400HBSc /(m/min)f/(mm/r)c /(m/min)f/(mm/r)c /(m/min)f/(mm/r)1616240.070.1210180.050.15120.030.0861216240.120.210180.10.185120.08020.410180.180.255120.150.2225016240.40.810180.250.45120.20.3表3 高速钢铰刀铰孔的切削用量工件材料铸铁钢及

3、合金钢铝铜及其合金切削用量铰刀直径c/(m/min)f/(mm/r)c /(m/min)f/(mm/r)c /(m/min)f/(mm/r)610260.30.51.250.30.48120.30.51015260.511.250.40.58120.511525260.81.51.250.50.68120.81.52540260.81.51.250.40.68120.81.54060261.21.81.250.50.68121.52表4 镗孔切削用量工件材料铸铁钢及合金钢铝及其合金工序切削用量c/(m/min)f/(mm/r)c /(m/min)f/(mm/r)c /(m/min)f/(mm/

4、r)刀具材料粗加工高速钢合金202535500.40.45153050700.350.71001501002500.51.5半精加工高速钢合金203550700.150.451550951350.150.451002000.20.5精加工高速钢合金7090D1级<0.08D级0.120.151001350.020.151504000.060.12）孔加工的加工余量表5中列出在实体材料上的孔加工方式及加工余量，供选择时参考。表5 在实体材料上的孔加工方式及加工余量加工孔的直径直径钻粗加工半精加工精加工（H7、H8）第一次第二次粗镗扩孔粗铰半精镗精铰精镗32.9-3-43.9-4-54.8-

5、5-65.0-5.85-6-87.0-7.85-8-109.0-9.85-10-1211.0-11.8511.95-12-1312.0-12.8512.95-13-1413.0-13.8513.95-14-1514.0-14.8514.95-15-1615.0-15.8515.95-16-1817.0-17.8517.95-18-2018.0-19.819.819.9519.9020202220.0-21.821.821.9521.9022222422.0-23.823.823.9523.9024242523.0-24.824.824.9524.9025252624.0-25.825.825.

6、9525.9026262826.0-27.827.827.9527.9028283015.028.029.829.829.9529.9030303215.030.031.731.7531.9331.9032323520.033.034.734.7534.9334.9035353820.036.037.737.7537.9337.9038384025.038.039.739.7539.9339.9040404225.040.041.741.7541.9341.9042424530.043.044.744.7544.9344.9045454836.046.047.747.7547.9347.9048485036.048.049.749.7549.9349.9050504.攻螺纹的加工工艺1）底孔直径的确定攻螺纹之前要先打底孔，底孔直径的确定方法如下：对钢和塑性大的材料D孔D-P对铸铁和塑性小的材料D孔D-（