车削加工中硬质合及金高速钢镗刀粗镗孔的进给量
<DIV align=center><TABLE cellSpacing=0 cellPadding=0 width="98%" border=1>
<TBODY>
<TR>
<TD width=104 colSpan=2>
<DIV align=center>镗刀或镗杆</DIV></TD>
<TD width=445 colSpan=12>
<DIV align=center>加工材料</DIV></TD></TR>
<TR>
<TD width=55 rowSpan=4>
<DIV align=center>圆形镗刀直径或方形镗杆尺寸（mm）</DIV></TD>
<TD width=49 rowSpan=4>
<DIV align=center>镗刀或镗伸出长度（mm）</DIV></TD>
<TD width=205 colSpan=6>
<DIV align=center>碳素结构钢、合金结构、耐热钢</DIV></TD>
<TD width=239 colSpan=6>
<DIV align=center>铸铁、铜合金</DIV></TD></TR>
<TR>
<TD width=445 colSpan=12>
<DIV align=center>切削深度α<SUB>P</SUB>（mm）</DIV></TD></TR>
<TR>
<TD width=37>
<DIV align=center>2</DIV></TD>
<TD width=37>
<DIV align=center>3</DIV></TD>
<TD width=37>
<DIV align=center>5</DIV></TD>
<TD width=37>
<DIV align=center>8</DIV></TD>
<TD width=24>
<DIV align=center>12</DIV></TD>
<TD width=33>
<DIV align=center>20</DIV></TD>
<TD width=37>
<DIV align=center>2</DIV></TD>
<TD width=37>
<DIV align=center>3</DIV></TD>
<TD width=37>
<DIV align=center>5</DIV></TD>
<TD width=37>
<DIV align=center>8</DIV></TD>
<TD width=24>
<DIV align=center>12</DIV></TD>
<TD width=67>
<DIV align=center>20</DIV></TD></TR>
<TR>
<TD width=445 colSpan=12>
<DIV align=center>进给量f(mm/r)</DIV></TD></TR>
<TR>
<TD width=55>
<DIV>10</DIV></TD>
<TD width=49>
<DIV>50</DIV></TD>
<TD width=37>
<DIV>0.08</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=24>
<DIV>-</DIV></TD>
<TD width=33>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>0.12～0.16</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=24>
<DIV>-</DIV></TD>
<TD width=67>
<DIV>-</DIV></TD></TR>
<TR>
<TD width=55>
<DIV>12</DIV></TD>
<TD width=49>
<DIV>60</DIV></TD>
<TD width=37>
<DIV>0.10</DIV></TD>
<TD width=37>
<DIV>0.08</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=24>
<DIV>-</DIV></TD>
<TD width=33>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>0.12～0.20</DIV></TD>
<TD width=37>
<DIV>0.12～0.18</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=24>
<DIV>-</DIV></TD>
<TD width=67>
<DIV>-</DIV></TD></TR>
<TR>
<TD width=55>
<DIV>16</DIV></TD>
<TD width=49>
<DIV>80</DIV></TD>
<TD width=37>
<DIV>0.10～0.20</DIV></TD>
<TD width=37>
<DIV>0.15</DIV></TD>
<TD width=37>
<DIV>0.10</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=24>
<DIV>-</DIV></TD>
<TD width=33>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>0.20～0.30</DIV></TD>
<TD width=37>
<DIV>0.15～0.25</DIV></TD>
<TD width=37>
<DIV>0.10～0.18</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=24>
<DIV>-</DIV></TD>
<TD width=67>
<DIV>-</DIV></TD></TR>
<TR>
<TD width=55>
<DIV>20</DIV></TD>
<TD width=49>
<DIV>100</DIV></TD>
<TD width=37>
<DIV>0.15～0.30</DIV></TD>
<TD width=37>
<DIV>0.15～0.25</DIV></TD>
<TD width=37>
<DIV>0.12</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=24>
<DIV>-</DIV></TD>
<TD width=33>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>0.30～0.40</DIV></TD>
<TD width=37>
<DIV>0.25～0.35</DIV></TD>
<TD width=37>
<DIV>0.12～0.25</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=24>
<DIV>-</DIV></TD>
<TD width=67>
<DIV>-</DIV></TD></TR>
<TR>
<TD width=55>
<DIV>25</DIV></TD>
<TD width=49>
<DIV>125</DIV></TD>
<TD width=37>
<DIV>0.25～0.50</DIV></TD>
<TD width=37>
<DIV>0.15～0.40</DIV></TD>
<TD width=37>
<DIV>0.12～0.20</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=24>
<DIV>-</DIV></TD>
<TD width=33>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>0.40～0.60</DIV></TD>
<TD width=37>
<DIV>0.30～0.50</DIV></TD>
<TD width=37>
<DIV>0.25～0.35</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=24>
<DIV>-</DIV></TD>
<TD width=67>
<DIV>-</DIV></TD></TR>
<TR>
<TD width=55>
<DIV>30</DIV></TD>
<TD width=49>
<DIV>150</DIV></TD>
<TD width=37>
<DIV>0.40～0.70</DIV></TD>
<TD width=37>
<DIV>0.20～0.50</DIV></TD>
<TD width=37>
<DIV>0.12～0.30</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=24>
<DIV>-</DIV></TD>
<TD width=33>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>0.50～0.80</DIV></TD>
<TD width=37>
<DIV>0.40～0.60</DIV></TD>
<TD width=37>
<DIV>0.25～0.45</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=24>
<DIV>-</DIV></TD>
<TD width=67>
<DIV>-</DIV></TD></TR>
<TR>
<TD width=55>
<DIV>40</DIV></TD>
<TD width=49>
<DIV>200</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>0.25～0.60</DIV></TD>
<TD width=37>
<DIV>0.15～0.40</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=24>
<DIV>-</DIV></TD>
<TD width=33>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>0.60～0.80</DIV></TD>
<TD width=37>
<DIV>0.30～0.60</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=24>
<DIV>-</DIV></TD>
<TD width=67>
<DIV>-</DIV></TD></TR>
<TR>
<TD width=55>
<DIV>40×40</DIV></TD>
<TD width=49>
<DIV>150</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>0.60～1.0</DIV></TD>
<TD width=37>
<DIV>0.50～0.70</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=24>
<DIV>-</DIV></TD>
<TD width=33>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>0.70～1.2</DIV></TD>
<TD width=37>
<DIV>0.50～0.90</DIV></TD>
<TD width=37>
<DIV>0.40～0.50</DIV></TD>
<TD width=24>
<DIV>-</DIV></TD>
<TD width=67>
<DIV>-</DIV></TD></TR>
<TR>
<TD width=55>
<DIV>40×40</DIV></TD>
<TD width=49>
<DIV>300</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>0.40～0.70</DIV></TD>
<TD width=37>
<DIV>0.30～0.60</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=24>
<DIV>-</DIV></TD>
<TD width=33>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>0.60～0.90</DIV></TD>
<TD width=37>
<DIV>0.40～0.70</DIV></TD>
<TD width=37>
<DIV>0.30～0.40</DIV></TD>
<TD width=24>
<DIV>-</DIV></TD>
<TD width=67>
<DIV>-</DIV></TD></TR>
<TR>
<TD width=55>
<DIV>60×60</DIV></TD>
<TD width=49>
<DIV>150</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>0.90～1.2</DIV></TD>
<TD width=37>
<DIV>0.80～1.0</DIV></TD>
<TD width=37>
<DIV>0.60～0.80</DIV></TD>
<TD width=24>
<DIV>-</DIV></TD>
<TD width=33>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>1.0～1.5</DIV></TD>
<TD width=37>
<DIV>0.80～1.2</DIV></TD>
<TD width=37>
<DIV>0.60～0.90</DIV></TD>
<TD width=24>
<DIV>-</DIV></TD>
<TD width=67>
<DIV>-</DIV></TD></TR>
<TR>
<TD width=55>
<DIV>60×60</DIV></TD>
<TD width=49>
<DIV>300</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>0.70～1.0</DIV></TD>
<TD width=37>
<DIV>0.50～0.80</DIV></TD>
<TD width=37>
<DIV>0.40～0.70</DIV></TD>
<TD width=24>
<DIV>-</DIV></TD>
<TD width=33>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>0.90～1.2</DIV></TD>
<TD width=37>
<DIV>0.70～0.90</DIV></TD>
<TD width=37>
<DIV>0.50～0.70</DIV></TD>
<TD width=24>
<DIV>-</DIV></TD>
<TD width=67>
<DIV>-</DIV></TD></TR>
<TR>
<TD width=55>
<DIV>75×75</DIV></TD>
<TD width=49>
<DIV>300</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>0.90～1.3</DIV></TD>
<TD width=37>
<DIV>0.80～1.1</DIV></TD>
<TD width=37>
<DIV>0.70～0.90</DIV></TD>
<TD width=24>
<DIV>-</DIV></TD>
<TD width=33>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>1.1～1.6</DIV></TD>
<TD width=37>
<DIV>0.90～1.3</DIV></TD>
<TD width=37>
<DIV>0.70～1.0</DIV></TD>
<TD width=24>
<DIV>-</DIV></TD>
<TD width=67>
<DIV>-</DIV></TD></TR>
<TR>
<TD width=55>
<DIV>75×75</DIV></TD>
<TD width=49>
<DIV>500</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>0.70～1.0</DIV></TD>
<TD width=37>
<DIV>0.60～0.90</DIV></TD>
<TD width=37>
<DIV>0.50～0.70</DIV></TD>
<TD width=24>
<DIV>-</DIV></TD>
<TD width=33>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>0.70～1.1</DIV></TD>
<TD width=37>
<DIV>0.60～0.80</DIV></TD>
<TD width=24>
<DIV>-</DIV></TD>
<TD width=67>
<DIV>-</DIV></TD></TR>
<TR>
<TD width=55>
<DIV>75×75</DIV></TD>
<TD width=49>
<DIV>800</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>0.40～0.70</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=24>
<DIV>-</DIV></TD>
<TD width=33>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=37>
<DIV>0.60～0.80</DIV></TD>
<TD width=37>
<DIV>-</DIV></TD>
<TD width=24>
<DIV>-</DIV></TD>
<TD width=67>
<DIV>-</DIV></TD></TR></TBODY></TABLE></DIV>
<DIV>注: <BR>1.切削浓度较小，加工材料强度较低时，进给量取较大值，切削浓度较大、加工材料强度较高时，时给量取较小值。<BR>2.加工耐热钢及合金钢时，不采用大于1mm/r的进给量。<BR>3.加工断续表面及有冲击地加工时，表内进给量应乘系数0.75～0.85。<BR>4.加工淬硬钢时，表内进给量应乘系数k=0.8（当材料硬度为44～56HRC时）或k=0.5（当硬度为57～62HRC时）。<BR>5.可转位刀片的允许最大进给量不应超过其刀尖圆弧半径数值的80％</DIV>
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