钻削、扩削、铰削加工中标准群钻切削部分几何参数
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<DIV align=center>特点口诀<BR>三尖七刃锐当先,月牙弧槽分两边,一侧外刃宽分屑,横刃磨低空窄又尖。</DIV></TD></TR></TBODY></TABLE></DIV>
<DIV align=center> </DIV>
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<TR>
<TD width=54 rowSpan=3>
<DIV align=center>钻头直径d</DIV></TD>
<TD width=32 rowSpan=3>
<DIV align=center>尖高h</DIV></TD>
<TD width=32 rowSpan=3>
<DIV align=center>圆弧半径R</DIV></TD>
<TD width=32 rowSpan=3>
<DIV align=center>外刃长l</DIV></TD>
<TD width=30 rowSpan=3>
<DIV align=center>槽距l<SUB>1</SUB></DIV></TD>
<TD width=32 rowSpan=3>
<DIV align=center>槽宽l<SUB>2</SUB></DIV></TD>
<TD width=50 colSpan=2>
<DIV align=center>横刃长</DIV></TD>
<TD width=31 rowSpan=3>
<DIV align=center>槽深c</DIV></TD>
<TD width=33 rowSpan=3>
<DIV align=center>槽数z</DIV></TD>
<TD width=39 colSpan=2>
<DIV align=center>外刃锋角</DIV></TD>
<TD width=36>
<DIV align=center>内刃锋角2k′<SUB>r</SUB></DIV></TD>
<TD width=40 colSpan=2>
<DIV align=center>横刃斜角</DIV></TD>
<TD width=31 rowSpan=3>
<DIV align=center>内刃前角γ<SUB>or</SUB></DIV></TD>
<TD width=26 rowSpan=3>
<DIV align=center>内刃斜角τ</DIV></TD>
<TD width=29 rowSpan=3>
<DIV align=center>外刃后角α<SUB>o</SUB>f<SUB>1</SUB></DIV></TD>
<TD width=28 rowSpan=3>
<DIV align=center>圆弧后角α<SUB>o</SUB>f<SUB>2</SUB></DIV></TD></TR>
<TR>
<TD width=25>
<DIV align=center>Ⅰ </DIV></TD>
<TD width=25>
<DIV align=center>Ⅱ </DIV></TD>
<TD width=20>
<DIV align=center>Ⅰ</DIV></TD>
<TD width=20>
<DIV align=center>Ⅱ</DIV></TD>
<TD width=36>
<DIV align=center> </DIV></TD>
<TD width=23>
<DIV align=center>Ⅰ</DIV></TD>
<TD width=17>
<DIV align=center>Ⅱ</DIV></TD></TR>
<TR>
<TD width=50 colSpan=2>
<DIV align=center>b</DIV></TD>
<TD width=39 colSpan=2>
<DIV align=center>2k<SUB>r</SUB></DIV></TD>
<TD width=36>
<DIV align=center> </DIV></TD>
<TD width=40 colSpan=2>
<DIV align=center>ф</DIV></TD></TR>
<TR>
<TD width=294 colSpan=9>
<DIV align=center>mm</DIV></TD>
<TD width=33>
<DIV align=center>(条)</DIV></TD>
<TD width=229 colSpan=9>
<DIV align=center>(°)</DIV></TD></TR>
<TR>
<TD width=403 colSpan=13>
<DIV align=center> </DIV></TD>
<TD width=23>
<DIV align=center> </DIV></TD>
<TD width=130 colSpan=5>
<DIV align=center> </DIV></TD></TR>
<TR>
<TD>
<DIV>5~7</DIV></TD>
<TD>
<DIV>0.2</DIV></TD>
<TD>
<DIV>0.75</DIV></TD>
<TD>
<DIV>1.3</DIV></TD>
<TD>
<DIV>~</DIV></TD>
<TD>
<DIV>~</DIV></TD>
<TD>
<DIV>0.2</DIV></TD>
<TD>
<DIV>0.15</DIV></TD>
<TD>
<DIV>~</DIV></TD>
<TD>
<DIV>~</DIV></TD>
<TD>
<DIV>125</DIV></TD>
<TD>
<DIV>140</DIV></TD>
<TD>
<DIV>135</DIV></TD>
<TD>
<DIV>65</DIV></TD>
<TD>
<DIV>60</DIV></TD>
<TD>
<DIV>-10</DIV></TD>
<TD>
<DIV>20</DIV></TD>
<TD>
<DIV>15</DIV></TD>
<TD>
<DIV>18</DIV></TD></TR>
<TR>
<TD>
<DIV>>7~10</DIV></TD>
<TD>
<DIV>0.28</DIV></TD>
<TD>
<DIV>1</DIV></TD>
<TD>
<DIV>1.9</DIV></TD>
<TD>
<DIV>~</DIV></TD>
<TD>
<DIV>~</DIV></TD>
<TD>
<DIV>0.3</DIV></TD>
<TD>
<DIV>0.2</DIV></TD>
<TD>
<DIV>~</DIV></TD>
<TD>
<DIV>~</DIV></TD>
<TD>
<DIV>125</DIV></TD>
<TD>
<DIV>140</DIV></TD>
<TD>
<DIV>135</DIV></TD>
<TD>
<DIV>65</DIV></TD>
<TD>
<DIV>60</DIV></TD>
<TD>
<DIV>-10</DIV></TD>
<TD>
<DIV>20</DIV></TD>
<TD>
<DIV>15</DIV></TD>
<TD>
<DIV>18</DIV></TD></TR>
<TR>
<TD>
<DIV>>10~15</DIV></TD>
<TD>
<DIV>0.36</DIV></TD>
<TD>
<DIV>1.5</DIV></TD>
<TD>
<DIV>2.6</DIV></TD>
<TD>
<DIV>~</DIV></TD>
<TD>
<DIV>~</DIV></TD>
<TD>
<DIV>0.4</DIV></TD>
<TD>
<DIV>0.3</DIV></TD>
<TD>
<DIV>~</DIV></TD>
<TD>
<DIV>~</DIV></TD>
<TD>
<DIV>125</DIV></TD>
<TD>
<DIV>140</DIV></TD>
<TD>
<DIV>135</DIV></TD>
<TD>
<DIV>65</DIV></TD>
<TD>
<DIV>60</DIV></TD>
<TD>
<DIV>-10</DIV></TD>
<TD>
<DIV>20</DIV></TD>
<TD>
<DIV>15</DIV></TD>
<TD>
<DIV>18</DIV></TD></TR>
<TR>
<TD>
<DIV>>15~20</DIV></TD>
<TD>
<DIV>0.55</DIV></TD>
<TD>
<DIV>1.5</DIV></TD>
<TD>
<DIV>5.5</DIV></TD>
<TD>
<DIV>1.4</DIV></TD>
<TD>
<DIV>2.7</DIV></TD>
<TD>
<DIV>0.5</DIV></TD>
<TD>
<DIV>0.4</DIV></TD>
<TD>
<DIV>1</DIV></TD>
<TD>
<DIV>1</DIV></TD>
<TD>
<DIV>125</DIV></TD>
<TD>
<DIV>140</DIV></TD>
<TD>
<DIV>135</DIV></TD>
<TD>
<DIV>65</DIV></TD>
<TD>
<DIV>60</DIV></TD>
<TD>
<DIV>-10</DIV></TD>
<TD>
<DIV>25</DIV></TD>
<TD>
<DIV>12</DIV></TD>
<TD>
<DIV>15</DIV></TD></TR>
<TR>
<TD>
<DIV>>20~25</DIV></TD>
<TD>
<DIV>0.7</DIV></TD>
<TD>
<DIV>2</DIV></TD>
<TD>
<DIV>7.0</DIV></TD>
<TD>
<DIV>1.8</DIV></TD>
<TD>
<DIV>3.4</DIV></TD>
<TD>
<DIV>0.6</DIV></TD>
<TD>
<DIV>0.48</DIV></TD>
<TD>
<DIV>1</DIV></TD>
<TD>
<DIV>1</DIV></TD>
<TD>
<DIV>125</DIV></TD>
<TD>
<DIV>140</DIV></TD>
<TD>
<DIV>135</DIV></TD>
<TD>
<DIV>65</DIV></TD>
<TD>
<DIV>60</DIV></TD>
<TD>
<DIV>-10</DIV></TD>
<TD>
<DIV>25</DIV></TD>
<TD>
<DIV>12</DIV></TD>
<TD>
<DIV>15</DIV></TD></TR>
<TR>
<TD>
<DIV>>25~30</DIV></TD>
<TD>
<DIV>0.85</DIV></TD>
<TD>
<DIV>2.5</DIV></TD>
<TD>
<DIV>8.5</DIV></TD>
<TD>
<DIV>2.2</DIV></TD>
<TD>
<DIV>4.2</DIV></TD>
<TD>
<DIV>0.75</DIV></TD>
<TD>
<DIV>0.55</DIV></TD>
<TD>
<DIV>1</DIV></TD>
<TD>
<DIV>1</DIV></TD>
<TD>
<DIV>125</DIV></TD>
<TD>
<DIV>140</DIV></TD>
<TD>
<DIV>135</DIV></TD>
<TD>
<DIV>65</DIV></TD>
<TD>
<DIV>60</DIV></TD>
<TD>
<DIV>-10</DIV></TD>
<TD>
<DIV>25</DIV></TD>
<TD>
<DIV>12</DIV></TD>
<TD>
<DIV>15</DIV></TD></TR>
<TR>
<TD>
<DIV>>30~35</DIV></TD>
<TD>
<DIV>1</DIV></TD>
<TD>
<DIV>3</DIV></TD>
<TD>
<DIV>10</DIV></TD>
<TD>
<DIV>2.5</DIV></TD>
<TD>
<DIV>5</DIV></TD>
<TD>
<DIV>0.9</DIV></TD>
<TD>
<DIV>0.65</DIV></TD>
<TD>
<DIV>1</DIV></TD>
<TD>
<DIV>1</DIV></TD>
<TD>
<DIV>125</DIV></TD>
<TD>
<DIV>140</DIV></TD>
<TD>
<DIV>135</DIV></TD>
<TD>
<DIV>65</DIV></TD>
<TD>
<DIV>60</DIV></TD>
<TD>
<DIV>-10</DIV></TD>
<TD>
<DIV>25</DIV></TD>
<TD>
<DIV>12</DIV></TD>
<TD>
<DIV>15</DIV></TD></TR>
<TR>
<TD>
<DIV>>35~40</DIV></TD>
<TD>
<DIV>1.15</DIV></TD>
<TD>
<DIV>3.5</DIV></TD>
<TD>
<DIV>11.5</DIV></TD>
<TD>
<DIV>2.9</DIV></TD>
<TD>
<DIV>5.8</DIV></TD>
<TD>
<DIV>1.05</DIV></TD>
<TD>
<DIV>0.75</DIV></TD>
<TD>
<DIV>1</DIV></TD>
<TD>
<DIV>1</DIV></TD>
<TD>
<DIV>125</DIV></TD>
<TD>
<DIV>140</DIV></TD>
<TD>
<DIV>135</DIV></TD>
<TD>
<DIV>65</DIV></TD>
<TD>
<DIV>60</DIV></TD>
<TD>
<DIV>-10</DIV></TD>
<TD>
<DIV>25</DIV></TD>
<TD>
<DIV>12</DIV></TD>
<TD>
<DIV>15</DIV></TD></TR>
<TR>
<TD>
<DIV>>40~45</DIV></TD>
<TD>
<DIV>1.3</DIV></TD>
<TD>
<DIV>4</DIV></TD>
<TD>
<DIV>13</DIV></TD>
<TD>
<DIV>2.2</DIV></TD>
<TD>
<DIV>3.25</DIV></TD>
<TD>
<DIV>1.15</DIV></TD>
<TD>
<DIV>0.85</DIV></TD>
<TD>
<DIV>1.5</DIV></TD>
<TD>
<DIV>2</DIV></TD>
<TD>
<DIV>125</DIV></TD>
<TD>
<DIV>140</DIV></TD>
<TD>
<DIV>135</DIV></TD>
<TD>
<DIV>65</DIV></TD>
<TD>
<DIV>60</DIV></TD>
<TD>
<DIV>-10</DIV></TD>
<TD>
<DIV>30</DIV></TD>
<TD>
<DIV>10</DIV></TD>
<TD>
<DIV>12</DIV></TD></TR>
<TR>
<TD>
<DIV>>45~50</DIV></TD>
<TD>
<DIV>1.45</DIV></TD>
<TD>
<DIV>4.5</DIV></TD>
<TD>
<DIV>14.5</DIV></TD>
<TD>
<DIV>2.4</DIV></TD>
<TD>
<DIV>3.6</DIV></TD>
<TD>
<DIV>1.3</DIV></TD>
<TD>
<DIV>0.95</DIV></TD>
<TD>
<DIV>1.5</DIV></TD>
<TD>
<DIV>2</DIV></TD>
<TD>
<DIV>125</DIV></TD>
<TD>
<DIV>140</DIV></TD>
<TD>
<DIV>135</DIV></TD>
<TD>
<DIV>65</DIV></TD>
<TD>
<DIV>60</DIV></TD>
<TD>
<DIV>-10</DIV></TD>
<TD>
<DIV>30</DIV></TD>
<TD>
<DIV>10</DIV></TD>
<TD>
<DIV>12</DIV></TD></TR>
<TR>
<TD>
<DIV>>50~60</DIV></TD>
<TD>
<DIV>1.65</DIV></TD>
<TD>
<DIV>5</DIV></TD>
<TD>
<DIV>17</DIV></TD>
<TD>
<DIV>2.9</DIV></TD>
<TD>
<DIV>4.25</DIV></TD>
<TD>
<DIV>1.45</DIV></TD>
<TD>
<DIV>1.05</DIV></TD>
<TD>
<DIV>1.5</DIV></TD>
<TD>
<DIV>2</DIV></TD>
<TD>
<DIV>125</DIV></TD>
<TD>
<DIV>140</DIV></TD>
<TD>
<DIV>1350</DIV></TD>
<TD>
<DIV>65</DIV></TD>
<TD>
<DIV>60</DIV></TD>
<TD>
<DIV>-10</DIV></TD>
<TD>
<DIV>30</DIV></TD>
<TD>
<DIV>10</DIV></TD>
<TD>
<DIV>12</DIV></TD></TR></TBODY></TABLE></DIV>
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<DIV align=center> 备<BR> 注 </DIV></TD>
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<DIV align=center>1)Ⅰ-加工一般钢材;Ⅱ-加工铝合金<BR>2)参数值按直径范围值来定,允许偏差为<BR>3)钻铝合金时将前面、后面用油石背光至Ra0.80um以上<BR>4)本表图形系直径15~40mm的中型标准群钻</DIV></TD>
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<DIV align=center>近似<BR>比例</DIV></TD>
<TD width=158>
<DIV align=center>h≈0.03d<BR>r≈0.1dl≈0.2d(d≤15) .3d(0.3d>15)<BR>b≈0.03d(Ⅰ)<BR>≈0.02d(Ⅱ)</DIV></TD></TR></TBODY></TABLE></DIV>
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