压铸模铸造-未注公差尺寸的有关规定
<P>1 成形部位未注公差尺寸的极限偏差见表1(GB8844—88) </P><P style="TEXT-ALIGN: center" align=center><SPAN class=blk14 word-break:break-all?>表1 成形部位未注公差尺寸的极限偏差 (mm)</SPAN><BR>
<DIV align=center>
<TABLE class=table1 borderColor=#b5dba2 cellSpacing=0 cellPadding=0 width="78%" border=1>
<TBODY>
<TR>
<TD vAlign=top width="16%">
<P><SPAN word-break:break-all="word-break:break-all">基本尺寸</SPAN><BR></P></TD>
<TD vAlign=top width="16%">
<P><SPAN word-break:break-all="word-break:break-all">≤10</SPAN><BR></P></TD>
<TD vAlign=top width="16%">
<P><SPAN word-break:break-all="word-break:break-all">>10~50</SPAN><BR></P></TD>
<TD vAlign=top width="16%">
<P><SPAN word-break:break-all="word-break:break-all">>50~180</SPAN><BR></P></TD>
<TD vAlign=top width="16%">
<P><SPAN word-break:break-all="word-break:break-all">>180~400</SPAN><BR></P></TD>
<TD vAlign=top width="20%">
<P><SPAN word-break:break-all="word-break:break-all">>400</SPAN><BR></P></TD></TR>
<TR>
<TD vAlign=top width="16%">
<P><SPAN word-break:break-all="word-break:break-all">极限偏差</SPAN><BR></P></TD>
<TD vAlign=top width="16%">
<P><SPAN word-break:break-all="word-break:break-all">±0.03</SPAN><BR></P></TD>
<TD vAlign=top width="16%">
<P><SPAN word-break:break-all="word-break:break-all">±0.05</SPAN><BR></P></TD>
<TD vAlign=top width="16%">
<P><SPAN word-break:break-all="word-break:break-all">±0.10</SPAN><BR></P></TD>
<TD vAlign=top width="16%">
<P><SPAN word-break:break-all="word-break:break-all">±0.15</SPAN><BR></P></TD>
<TD vAlign=top width="20%">
<P><SPAN word-break:break-all="word-break:break-all">±0.20</SPAN><BR></P></TD></TR></TBODY></TABLE></DIV>
<P class=blk14><SPAN class=blk14b>2 成形部位转接圆弧未注公差尺寸的极限偏差</SPAN>见表2(GB8844—88)。
<P style="TEXT-ALIGN: center" align=center><SPAN class=blk14 word-break:break-all?>表2 成形部位转接圆弧未注公差尺寸的极限偏差 (mm)</SPAN><BR>
<DIV align=center>
<TABLE class=table1 borderColor=#b5dba2 cellSpacing=0 cellPadding=0 width="78%" border=1>
<TBODY>
<TR>
<TD colSpan=2>
<P style="TEXT-ALIGN: center" align=center><SPAN word-break:break-all="word-break:break-all">基本尺寸</SPAN><BR></P></TD>
<TD width="16%">
<P style="TEXT-ALIGN: center" align=center><SPAN word-break:break-all="word-break:break-all">≤6</SPAN><BR></P></TD>
<TD width="16%">
<P><SPAN word-break:break-all="word-break:break-all">>6~18</SPAN><BR></P></TD>
<TD width="16%">
<P style="TEXT-ALIGN: center" align=center><SPAN word-break:break-all="word-break:break-all">>18~30</SPAN><BR></P></TD>
<TD width="16%">
<P style="TEXT-ALIGN: center" align=center><SPAN word-break:break-all="word-break:break-all">>30~120</SPAN><BR></P></TD>
<TD width="17%">
<P style="TEXT-ALIGN: center" align=center><SPAN word-break:break-all="word-break:break-all">>120</SPAN><BR></P></TD></TR>
<TR>
<TD width="9%" rowSpan=2>
<P style="TEXT-ALIGN: center" align=center><SPAN word-break:break-all="word-break:break-all">极限偏差</SPAN><BR></P></TD>
<TD width="10%">
<P style="TEXT-ALIGN: center" align=center><SPAN word-break:break-all="word-break:break-all">凸圆弧</SPAN><BR></P></TD>
<TD width="16%">
<P style="TEXT-ALIGN: center" align=center><SPAN word-break:break-all="word-break:break-all">0</SPAN><BR>
<P style="TEXT-ALIGN: center" align=center><SPAN word-break:break-all="word-break:break-all">-0.15</SPAN><BR></P></TD>
<TD width="16%">
<P style="TEXT-ALIGN: center" align=center><SPAN word-break:break-all="word-break:break-all">0</SPAN><BR>
<P style="TEXT-ALIGN: center" align=center><SPAN word-break:break-all="word-break:break-all">-0.20</SPAN><BR></P></TD>
<TD width="16%">
<P style="TEXT-ALIGN: center" align=center><SPAN word-break:break-all="word-break:break-all">0</SPAN><BR>
<P style="TEXT-ALIGN: center" align=center><SPAN word-break:break-all="word-break:break-all">-0.30</SPAN><BR></P></TD>
<TD width="16%">
<P style="TEXT-ALIGN: center" align=center><SPAN word-break:break-all="word-break:break-all">0</SPAN><BR>
<P style="TEXT-ALIGN: center" align=center><SPAN word-break:break-all="word-break:break-all">-0.45</SPAN><BR></P></TD>
<TD width="17%">
<P style="TEXT-ALIGN: center" align=center><SPAN word-break:break-all="word-break:break-all">0</SPAN><BR>
<P style="TEXT-ALIGN: center" align=center><SPAN word-break:break-all="word-break:break-all">-0.60</SPAN><BR></P></TD></TR>
<TR>
<TD width="10%">
<P style="TEXT-ALIGN: center" align=center><SPAN word-break:break-all="word-break:break-all">凹圆弧</SPAN><BR></P></TD>
<TD width="16%">
<P style="TEXT-ALIGN: center" align=center><SPAN word-break:break-all="word-break:break-all">+0.15</SPAN><BR>
<P style="TEXT-ALIGN: center" align=center><SPAN word-break:break-all="word-break:break-all">0</SPAN><BR></P></TD>
<TD width="16%">
<P style="TEXT-ALIGN: center" align=center><SPAN word-break:break-all="word-break:break-all">+0.20</SPAN><BR>
<P style="TEXT-ALIGN: center" align=center><SPAN word-break:break-all="word-break:break-all">0</SPAN><BR></P></TD>
<TD width="16%">
<P style="TEXT-ALIGN: center" align=center><SPAN word-break:break-all="word-break:break-all">+0.30</SPAN><BR>
<P style="TEXT-ALIGN: center" align=center><SPAN word-break:break-all="word-break:break-all">0</SPAN><BR></P></TD>
<TD width="16%">
<P style="TEXT-ALIGN: center" align=center><SPAN word-break:break-all="word-break:break-all">+0.45</SPAN><BR>
<P style="TEXT-ALIGN: center" align=center><SPAN word-break:break-all="word-break:break-all">0</SPAN><BR></P></TD>
<TD width="17%">
<P style="TEXT-ALIGN: center" align=center><SPAN word-break:break-all="word-break:break-all">+0.60</SPAN><BR>
<P style="TEXT-ALIGN: center" align=center><SPAN word-break:break-all="word-break:break-all">0</SPAN><BR></P></TD></TR></TBODY></TABLE></DIV>
<P class=blk14><SPAN class=blk14b>3 成形部位未注角度和锥度偏差</SPAN>见表3(GB8844—88)。
<P style="TEXT-ALIGN: center" align=center><SPAN class=blk14>表3 成形部位未注角度和锥度偏差 (mm)</SPAN><BR>
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<TABLE class=table1 borderColor=#b5dba2 cellSpacing=0 cellPadding=0 width="78%" border=1>
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<TD width="30%">
<P style="TEXT-ALIGN: center" align=center>锥体母线或角度短边长度<BR>
<P style="TEXT-ALIGN: center" align=center>(mm)<BR></P></TD>
<TD width="14%">
<P style="TEXT-ALIGN: center" align=center>≤6<BR></P></TD>
<TD width="14%">
<P style="TEXT-ALIGN: center" align=center>>6~18<BR></P></TD>
<TD width="14%">
<P style="TEXT-ALIGN: center" align=center>>18~50<BR></P></TD>
<TD width="14%">
<P style="TEXT-ALIGN: center" align=center>>50~120<BR></P></TD>
<TD width="14%">
<P style="TEXT-ALIGN: center" align=center>>120<BR></P></TD></TR>
<TR>
<TD width="30%">
<P style="TEXT-ALIGN: center" align=center>极限偏差<BR></P></TD>
<TD width="14%">
<P style="TEXT-ALIGN: center" align=center>±30'<BR></P></TD>
<TD width="14%">
<P style="TEXT-ALIGN: center" align=center>±20'<BR></P></TD>
<TD width="14%">
<P style="TEXT-ALIGN: center" align=center>±15'<BR></P></TD>
<TD width="14%">
<P style="TEXT-ALIGN: center" align=center>±10'<BR></P></TD>
<TD width="14%">
<P style="TEXT-ALIGN: center" align=center>±5'<BR></P></TD></TR></TBODY></TABLE></DIV>
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