铣床夹具
<P align=center><IMG style="WIDTH: 333px; HEIGHT: 219px" height=257 src="http://www.chmcw.com/upload/news/RCL/13220_8fzmqr80.jpg" width=349 border=0></P><DIV align=left> </DIV>
<P align=center><IMG src="http://www.chmcw.com/upload/news/RCL/13220_opeiud81.jpg" border=0></P>
<P align=center><IMG src="http://www.chmcw.com/upload/news/RCL/13220_pc7z5o.jpg" border=0></P>
<P align=center><IMG style="FILTER: ; WIDTH: 424px; HEIGHT: 179px" height=375 alt="" hspace=0 src="http://www.chmcw.com/upload/news/RCL/13220_fzbbhf.jpg" width=500 border=0></P>
<P align=center> </P>
<P align=center></P>
<P><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''"> 铣床夹具主要用于加工平面、凹槽及各种成型表面。它主要由对刀装置（对刀块与塞尺）、定位元件、夹紧机构、定位键和夹具体组成。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial"> <BR> </SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">（一）铣床夹具的实例</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial"> <BR> </SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">（</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">1</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">）连杆铣给合面专用夹具，如图</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">2</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">所示，工件以底面及</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">φ20H8</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">孔在三个支承钉</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">2</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">及定位销</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">7</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">上定位，防转销</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">3</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">限制工件转动。拧紧螺母</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">6</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">，通过开口压板</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">5</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">夹紧工件。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial"> <BR> </SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">（</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">2</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">）圆周进给铣床夹具，如图</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">3</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">所示，该夹具在立式铣床上连续铣削拨叉上下两端面。工件以圆孔、端面及侧面在定位销</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">2</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">和挡销</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">4</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">上定位，由液压缸</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">6</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">驱动拉杆</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">1</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">通过开口垫圈</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">3</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">将工件夹紧。夹具上同时装夹</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">12</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">个工件。工件台由电动机通过蜗杆蜗轮机构带动回转。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">AB</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">扇形区是切区域，</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">CD</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">扇形区是装卸工件区域。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial"> <BR> </SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">（二）铣床专用夹具的设计特点和要求</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial"> <BR> 1</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">）由于铣削过程不是连续切削，极易产生铣削振动，铣削的加工余量一般比较大，铣削力也较大，且方向是变化的，因此设计时要注意，夹具要有足够的刚度和强度；</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black">②</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">夹具要有足够的夹紧力，夹紧装置自锁性要好；</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black">③</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">夹紧力应作用在工件刚度较大的部位上，且着力点和施力方向要恰当；</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black">④</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">夹具的重心应尽量低，高度与宽度之比不应大于</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">1-2.5</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">；</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black">⑤</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">要有足够的排屑空间。切屑和冷却液能顺利排出，必要时可设计排屑孔。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial"> <BR> 2</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">）为了调整和确定夹具相对于机床的位置及工件相对于刀具的位置，铣床夹具应设置定位键和对刀装置。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial"> <BR> </SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">定位键安装在夹具底面的纵向槽中，一般采用两个，其距离越远，定向精度越好（见图</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">2</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">）。定位键不仅可以确定夹具在机床上的位置，还可以承受切削扭矩，减轻螺栓的负荷，增加夹具的稳定怀，因此，铣平面夹具有时也装定位键。除了铣床夹具使用定位键外，钻床、镗床等专用夹具也常使用。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial"> <BR> </SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">定位键有矩形和圆形两种，圆形定位键（如图</SPAN><?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" /><st1:chmetcnv w:st="on" UnitName="C" SourceValue="4" HasSpace="False" Negative="False" NumberType="1" TCSC="0"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">4C</SPAN></st1:chmetcnv><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">所示）补偿贸易加工，便较易磨损，故用得不多。矩形定位键有两种结构形式，一种在键的侧面开有沟槽或台附（图</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">4b</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">），把键分为上、下两部分，其上部按</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">H7/h6</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">与夹具体底面上的槽或台附。下部与多才多艺床工作台上的</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">T</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">形槽配合。因工作台</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">T</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">形槽的公差为</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">H8</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">或</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">H7</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">，故尺寸</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">b</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">按</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">h8</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">或</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">h6</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">制造，以减少配合间隙，提高定向精度。另一种键为矩形（图</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">4)</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">上下两部分尺寸相同，它适用于定向烳工度要求不高的夹具。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial"> <BR> </SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">对于铣刨床夹具，当其固定在机床上后，还需要通过对刀装置来确定刀具相对于夹具定位元件的位置（见图</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">2</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">）。对刀装置的结构形式取决于工件加工表面的形状，图</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">5</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">为几种常见的对刀装置。图</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">a</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">用于铣平面；图</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">b</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">用于铣槽；图</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">c</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">、</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">d</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">用于铣削成形面。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial"> <BR> </SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">对刀时，在刀具与对刀块之间一塞尺，避免刀具与对刀块直接接触而损坏刀刃或造成对刀块过早磨损。塞尺有平塞尺和圆柱形塞尺两种，其厚度或直径一般为</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">3<st1:chmetcnv w:st="on" UnitName="mm" SourceValue="5" HasSpace="False" Negative="True" NumberType="1" TCSC="0">-5mm</st1:chmetcnv></SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">，公差</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">h6</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">。对刀块与塞尺均已标准化，可查</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">GB/T2240-91</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">和</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial">GB/T2244-91.</SPAN><SPAN style="FONT-SIZE: 9pt; COLOR: black; mso-ascii-font-family: ''''''''ˎ̥,Verdana,Arial''''''''; mso-hansi-font-family: ''''''''ˎ̥,Verdana,Arial''''''''">使用对刀块时，夹具总图上应标明塞的尺寸及对刀块工作表面与定位元件之间位置。对刀装置应设计在便于对刀的位置，并应在工件的切入一端。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: ˎ̥,Verdana,Arial"><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN></P>
页:
[1]