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bodyBgs[0] = "/images/banner/s1.jpg"; bodyBgs[1] = "/images/banner/s2.jpg"; bodyBgs[2] = "/images/banner/s3.jpg"; bodyBgs[3] = "/images/banner/s4.jpg"; bodyBgs[4] = "/images/banner/s5.jpg"; var randomBgIndex = Math.round( Math.random() * 4 ); //输出随机的背景图 document.write('<style>.banner{background:url(' + bodyBgs[randomBgIndex] + ') no-repeat 50% bottom}</style>'); //]]> </script> <section> <div class="banner" style="height:160px;"> </div> </section> <!-- 面包屑导航开始 --> <div class="container "> <nav class="sub_menu"> <ol class="breadcrumb"><span class="glyphicon glyphicon-list"></span> <li><a href="/">网站首页</a></li> <li><a title="技术文章" href="/bethel/NC">技术文章</a></li> <li><a title="数控文章" href="/bethel/news">数控文章</a></li> </ol> </nav> </div> <!--/sub_menu--><!-- 面包屑导航结束 --> <!-- 页面标题开始 --> <div class="title"> <h3><a>刀具补偿的目的及半径补偿、长度补偿的用法和指令<small></small></a></h3> </div> <!-- 页面标题结束 --> <hr class="featurette-divider"> <!-- 中部开始 --> <div class="container"> <!-- 正文 --> <div class="lead" id="print"> <p> <span lang="EN-US" style="text-indent: 21pt;">1 </span><span style="text-indent: 21pt; font-family: 宋体;"> </span><span style="text-indent: 21pt;"> </span><span style="text-indent: 21pt; font-family: 宋体;">刀具补偿的目的</span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">刀具补偿是补偿实际加工中所用的刀具与编程时使用的理想刀具或对刀时用的基准刀具之间的差值</span><span lang="EN-US">.</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">这个差值的存在</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">会导致实际加工出来的零件不符合图纸尺寸的要求</span><span lang="EN-US">. </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">如果数控系统不具备刀具补偿功能或不使用该功能编程</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">则只能按刀心轨迹进行编程</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">即在编程时给出刀具的中心轨迹</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">计算相当复杂</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">尤其是刀具磨损、重磨或换新刀时</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">必须重新计算刀心轨迹修改程序</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">这样既繁琐</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">又不能够保证加工精度</span><span lang="EN-US">. </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">而将刀具补偿功能应用于数控编程时</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">则只需按工件轮廓进行</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">数控系统会自动计算刀心轨迹并进行补偿</span><span lang="EN-US">. </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">另外</span><span lang="EN-US"> , </span><span style="font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">将此项补偿功能应用于没有更换刀具的情况时</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">如果刀具的半径和长度发生变动</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">把变动量作为加工余量进行技术处理</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">同样可以起到简化手工编程程序、提高数控加工效率的作用</span><span lang="EN-US">. </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">下面以</span><span lang="EN-US">FANUC</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">数控系统为例详细阐述刀具补偿功能在数控编程中的应用</span><span lang="EN-US">.</span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span lang="EN-US">2 </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman""> </span> <span style="font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">刀具半径补偿</span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span lang="EN-US">211 </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman""> </span> <span style="font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">刀具半径补偿功能</span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">铣削刀具的基准点和刀位点都在刀具的中心线上</span><span lang="EN-US">, </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">实际加工生成的零件轮廓是由刀刃的切削点形成的</span><span lang="EN-US">. </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">以端铣刀为例</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">刀位点位于刀具底部中心</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">切削点位于刀具的外圆</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">两者相差一个刀具半径值</span><span lang="EN-US">.</span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">为了加工出符合要求的零件轮廓</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">其加工程序要么偏离零件轮廓一个刀具半径值来编程</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">要么按零件轮廓编程</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">而让数控系统自动偏离零件轮廓一个刀具半径值</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">就是刀具半径补偿</span><span lang="EN-US">. </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">刀具所偏移的这段距离称为偏置</span><span lang="EN-US">. </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">数控系统使用刀具半径补偿功能</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">可以自动计算出偏置后的刀具轨迹</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">这样既能简化编程程序</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">又能够很容易地调整加工轮廓的尺寸</span><span lang="EN-US">.</span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span lang="EN-US">212 </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman""> </span> <span style="font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">刀具半径补偿指令</span><span lang="EN-US"> G41</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">、</span><span lang="EN-US">G42</span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span lang="EN-US">G17 </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">指令后的刀具半径补偿</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">补偿偏置量在</span><span lang="EN-US"> XY</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">平面上</span><span lang="EN-US">; G18 </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">指令后的刀具半径补偿</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">补偿偏置量在</span><span lang="EN-US"> XZ</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">平面上</span><span lang="EN-US">; G19 </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">指令后的刀具半径补偿</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">补偿偏置量在</span><span lang="EN-US">YZ</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">平面上</span><span lang="EN-US">. </span><span style="font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">刀具半径补偿平面与偏置平面相同</span><span lang="EN-US">.</span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">刀具半径补偿的指令格式为</span><span lang="EN-US">: G41 D ; G42D . G41 </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">是刀具半径左补偿指令</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">顺着刀具直线前进的方向看</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">刀具在左边</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">工件在右边</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">此时刀心在工件的左边</span><span lang="EN-US">, </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">离工件的轮廓相差一个刀具半径值</span><span lang="EN-US">, </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">需对刀具进行左补偿</span><span lang="EN-US">, </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">补偿值用</span><span lang="EN-US"> D </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">及后面的号码确定</span><span lang="EN-US">.G42</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">为刀具半径右补偿指令</span><span lang="EN-US">, </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">顺着刀具直线前进的方向看</span><span lang="EN-US">, </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">刀具在右边</span><span lang="EN-US">, </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">工件在左边</span><span lang="EN-US">, </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">此时刀心在工件的右边</span><span lang="EN-US">,</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">离工件的轮廓相差一个刀具半径值</span><span lang="EN-US">, </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">需对刀具进行右补偿</span><span lang="EN-US">, </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">补偿值用</span><span lang="EN-US">D</span><span style="font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">及后面的号码确定</span><span lang="EN-US">[1 ](</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">如图</span><span lang="EN-US">1) .</span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span lang="EN-US"><img src="/upload/images/201407/14049099948122.jpg" alt="" /><br /> <!--[endif]--></span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman""> </span> <span style="font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">各个刀具的偏置量存放在偏置存储器中</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">用</span><span lang="EN-US">D00</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">～</span><span lang="EN-US">D99 </span><span style="font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">来指定偏置号</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">如</span><span lang="EN-US">D01 </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">就是调用在刀具偏置表中第</span><span lang="EN-US"> 1 </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">号刀具的半径补偿值</span><span lang="EN-US">. </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">在多轴联动控制中</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">投影到补偿平面上的刀具轨迹受到补偿</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">补偿平面的切换必须在取消补偿的状态下进行</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">否则自动报警</span><span lang="EN-US">.</span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span lang="EN-US">213 </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman""> </span> <span style="font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">取消刀具半径补偿功能</span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span lang="EN-US">G40</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">为取消刀具半径补偿指令</span><span lang="EN-US">. </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">取消刀具半径补偿功能后</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">刀具中心轨迹与编程轨迹重合</span><span lang="EN-US">. </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">在一个程序结束之前</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">必须取消刀具半径补偿功能</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">否则刀具的终点定位将偏离一个刀具半径值</span><span lang="EN-US">[1 ].</span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span lang="EN-US">214 </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman""> </span> <span style="font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">使用刀具半径补偿功能时的注意事项</span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">一般情况下</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">刀具半径补偿号要在刀具半径补偿功能取消后才能变换</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">如果在补偿方式下变换补偿号</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">目的点的补偿量将按照新的给定值确定</span><span lang="EN-US">. </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">另外</span><span lang="EN-US"> , </span><span style="font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">刀具在做半径补偿时要防止过切现象</span><span lang="EN-US">.</span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span lang="EN-US">3 </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman""> </span> <span style="font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">刀具长度补偿</span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span lang="EN-US">311 </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman""> </span> <span style="font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">刀具长度补偿功能</span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">刀具基准点是用标准长度的刀具对刀时的刀位点</span><span lang="EN-US">. </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">工件坐标系的设定是以刀具基准点为依据的</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">零件加工程序中的指令值是刀位点的值</span><span lang="EN-US">. </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">由于各个刀具的长度不一致</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">其刀位点与基准点不一定重合</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">因此要应用刀具长度补偿功能</span><span lang="EN-US">. </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">使用刀具长度补偿功能后</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">改变刀具只需改变刀具长度补偿值</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">而不必变更零件的加工程序</span><span lang="EN-US">.</span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span lang="EN-US">312 </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman""> </span> <span style="font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">刀具长度补偿指令</span><span lang="EN-US"> G43</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">、</span><span lang="EN-US">G44</span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span lang="EN-US">G17 </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">指令后的刀具长度补偿</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">只能将刀具长度的补偿值补偿到</span><span lang="EN-US"> Z</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">轴</span><span lang="EN-US">; G18 </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">指令后的刀具长度补偿</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">只能将刀具长度的补偿值补偿到</span><span lang="EN-US"> Y</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">轴</span><span lang="EN-US">; G19 </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">指令后的刀具长度补偿</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">只能将刀具长度的补偿值补偿到</span><span lang="EN-US"> X</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">轴</span><span lang="EN-US">.</span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">刀具长度补偿分为正向偏置和负向偏置</span><span lang="EN-US"> (</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">如图</span><span lang="EN-US"> 2) . </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">所谓正向偏置</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">就是实际使用的刀具长度比编程时的标准刀具长</span><span lang="EN-US"> ,</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">指令格式为</span><span lang="EN-US"> G43 H , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">使刀具沿</span><span lang="EN-US"> Z</span><span style="font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">轴正方向移动</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">偏置量由</span><span lang="EN-US"> H</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">及后面的号码确定</span><span lang="EN-US">; </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">所谓负向偏置</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">就是实际使用的刀具长度比编程时的标准刀具短</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">指令格式为</span><span lang="EN-US"> G44 H ,</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">使刀具沿</span><span lang="EN-US"> Z</span><span style="font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">轴负方向移动</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">偏置量由</span><span lang="EN-US"> H </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">及后面的号码确定</span><span lang="EN-US">.</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">各个刀具的偏置量存放在偏置存储器中</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">用</span><span lang="EN-US"> H00</span><span style="font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">～</span><span lang="EN-US">H99 </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">来指定偏置号</span><span lang="EN-US">.</span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span lang="EN-US">313 </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman""> </span> <span style="font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">取消刀具长度补偿功能</span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span lang="EN-US">G49 </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">为取消刀具长度补偿指令</span><span lang="EN-US">. </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">刀具长度补偿功能一旦取消</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">之后的程序段便不再有补偿</span><span lang="EN-US">. </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">也可采用</span><span lang="EN-US"> G43 H00 </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">或</span><span lang="EN-US"> G44 H00 </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">来取消刀具长度补偿功能</span><span lang="EN-US">.</span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span lang="EN-US">314 </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman""> </span> <span style="font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">使用刀具长度补偿功能时的注意事项</span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">刀具长度补偿指令通常用在下刀和提刀的直线段程序</span><span lang="EN-US"> G00 </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">或</span><span lang="EN-US"> G01 </span><span style="font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">中</span><span lang="EN-US">.</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">使用多把刀具时</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">通常是每一把刀具对应一个刀具长度补偿号</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">下刀时使用</span><span lang="EN-US"> G43 </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">或</span><span lang="EN-US"> G44.</span><span style="font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">在实际使用中</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">鉴于习惯</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">一般仅使用</span><span lang="EN-US"> G43 </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">指令</span><span lang="EN-US"> , G44 </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">指令使用的较少</span><span lang="EN-US">. </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">正向或负向的移动通过变换</span><span lang="EN-US"> H</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">代码的正负值来实现</span><span lang="EN-US">.</span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span lang="EN-US">4 </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman""> </span> <span style="font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">编程举例</span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">例</span><span lang="EN-US">1 </span><span style="font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman""> 如图</span><span lang="EN-US"> 3 </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">所示</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">用</span> <span style="font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">Φ</span><span lang="EN-US">12 </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">的刀具加工距离工件上表面</span><span lang="EN-US"> 7 mm </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">的深凸模</span><span lang="EN-US">.</span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman""> </span> <span style="font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">程序如下</span><span lang="EN-US">:</span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span lang="EN-US"><img src="/upload/images/201407/14049100529997.jpg" alt="" /><br /> <!--[endif]--></span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">由上例可知</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">加入刀具半径补偿和长度补偿功能后</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">数控编程均可按图形轮廓的尺寸进行</span><span lang="EN-US">.</span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span lang="EN-US">5 </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman""> </span> <span style="font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">结语</span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">刀具补偿在数控加工中有着非常重要的地位</span><span lang="EN-US">, </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">对简化程序、正确编制程序能够起到很好的作用</span><span lang="EN-US">. </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">正确掌握刀具半径补偿和长度补偿功能</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">充分发挥其在数控编程中的作用</span><span lang="EN-US"> , </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">为加工出符合零件图纸要求的形状复杂的零件、提高零件加工的质量和效率有着深远的意义</span><span lang="EN-US">.</span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span lang="EN-US"><img src="/upload/images/201407/14049100695635.jpg" alt="" /><br /> <!--[endif]--></span></p> <p class="MsoNormal" align="center" style="margin-top:4.5pt;margin-right:0cm; margin-bottom:7.5pt;margin-left:0cm;text-align:center;line-height:13.5pt; mso-pagination:widow-orphan;mso-outline-level:1"><b><span style="mso-bidi-font-size: 10.5pt;font-family:宋体;mso-bidi-font-family:宋体;color:#666666;mso-font-kerning: 0pt">本文由<span lang="EN-US"> <a href="http://www.bethel-cnc.com/"><span lang="EN-US" style="color:#333333"><span 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<p>2024-11</p> </div> <h4><a title="五轴加工中心后处理算法研究和验证" href="/bethel/5-aix/show-2877.html" target="_blank">五轴加工中心后处理算法研究和验证</a></h4> <p>本文通过对五轴加工中心的三种类型的结构特点进行具体的运动分析，建立了数学模型推导出各类机床的后置处理算法。并通过UG NX进行建模并进行后处理与算法得到的后处理数据进行对比，证明了文中算法的正确性。通过所推导的数学公式得知，坐标的角度变换与转台的转动相关。所推导的数学模型为最基础… <a href="/bethel/5-aix/show-2877.html" target="_blank">[了解更多]</a></p> </div> <div class="news-list list-border list-border-w"> <div class="list-date"> <span>04</span> <p>2024-11</p> </div> <h4><a title="五轴刀具切削加工误差非线性插补" href="/bethel/5-aix/show-2871.html" target="_blank">五轴刀具切削加工误差非线性插补</a></h4> <p>为了提高五轴加工中心的刀具加工精度，本文提出了五轴联动数控刀具切削加工误差非线性插补方法。根据五轴联动数控刀具工作原理，分析误差产生原因，利用误差非线性插补方法，实现误差插补。实验结果表明：利用该方法进行误差插补后，机床刀具运行轨迹与理想插补轨迹贴合度高，且插补后误差明显减小，可… <a href="/bethel/5-aix/show-2871.html" target="_blank">[了解更多]</a></p> </div> <div class="news-list list-border list-border-w"> <div class="list-date"> <span>04</span> <p>2024-11</p> </div> <h4><a title="五轴加工中心后处理器仿真与优化" href="/bethel/5-aix/show-2864.html" target="_blank">五轴加工中心后处理器仿真与优化</a></h4> <p>随着五轴联动数控加工技术的广泛应用，文中针对五轴加工中心和五轴钻攻中心的后置处理器进行仿真分析，并提出一种以序列为基础的优化方法，优化后的后置处理器，可以使得数控加工节省时间百分比得到有效提升。虽然文中提出优化方法满足了预期要求，但受到研究条件的影响，该方法未来需要进一步完善。… <a href="/bethel/5-aix/show-2864.html" target="_blank">[了解更多]</a></p> </div> <div class="news-list list-border list-border-w"> <div class="list-date"> <span>04</span> <p>2024-11</p> </div> <h4><a title="立铣刀切削轨迹下五轴铣削力计算" href="/bethel/5-aix/show-2859.html" target="_blank">立铣刀切削轨迹下五轴铣削力计算</a></h4> <p>面向铣削工艺参数优选技术的工程需求，以复杂零部件多轴数控铣削为背景，文中提出了一种通用立铣刀真实切削轨迹下的五轴铣削力计算方法。 （１）建立了可同时表征球头铣刀、圆环铣刀和平底铣刀的通用立铣刀几何模型，计算得到不同类型立铣刀的切削微元长度和切削宽度。 （２）提出了一种快速求解… <a href="/bethel/5-aix/show-2859.html" target="_blank">[了解更多]</a></p> </div> <!-- 内容列表结束 --> </div> <!-- 相关文章结束 --> <!-- 页底推荐图文产品开始 --> <hr class="featurette-divider"> <!-- 页面标题开始 --> <div class="title"> <h3 class="wow bounceInDown" data-wow-delay="0.5s"><a href="/bethel/cnc">产品中心<small></small></a></h3> <span>——</span> </div> <!-- 页面标题结束 --> <div class="container"> <div 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