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面包屑導航結束 --> <!-- 頁面標題開始 --> <div id="n1l1njb9b" class="title"> <h3><a>討論數控車床加工曲面螺紋的辦法<small></small></a></h3> </div> <!-- 頁面標題結束 --> <hr class="featurette-divider"> <!-- 中部開始 --> <div id="n1l1njb9b" class="container"> <!-- 正文 --> <div id="n1l1njb9b" class="lead" id="print"> <p> <span lang="EN-US">1.</span><span style="font-family: 宋體;">前言</span></p> <p class="MsoNormal"><span lang="EN-US"> </span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">本文以如圖</span><span lang="EN-US">1</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">所示工件為例，介紹</span><span lang="EN-US">FANUC</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">系統宏程序的編程，探討非圓曲面螺紋的加工方法。已知橢圓的長半軸</span><span lang="EN-US">a=50</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">，短半軸</span><span lang="EN-US">b=20</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">，方程式</span><span lang="EN-US">:</span><span style="font-family: 宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">小圓直徑為</span><span lang="EN-US">5,</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">深度為</span><span lang="EN-US">1,</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">槽底直徑</span><span lang="EN-US">24,</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">寬</span><span lang="EN-US">10,</span><span style="font-family: 宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">螺距</span><span lang="EN-US">6</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">。</span></p> <p class="MsoNormal"><span lang="EN-US"><img src="/upload/images/201408/14068846830267.jpg" alt="" /><br /> <!--[endif]--></span></p> <p class="MsoNormal"><span lang="EN-US"> 2..</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">編程思路</span></p> <p class="MsoNormal"><span lang="EN-US"> </span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">非圓曲線的加工很容易，關鍵是螺紋。曲面螺紋的加工是刀具沿著曲面路徑加工而成。當刀具的切削起點有規律的變化，每次還沿著曲線的軌跡車螺紋，就形成了曲面異形螺紋。本例橢圓曲面圓弧螺紋的切削起點有規律的變化</span><span lang="EN-US">(</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">沿著</span><span lang="EN-US">R2. 5</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">小圓的圓周作等步距的變化</span><span lang="EN-US">)</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">，每次螺紋還都走橢圓曲線，最終形成橢圓面上圓弧螺紋，所以編程的關鍵是小圓的圓心坐標系與橢圓坐標系疊加起來找到與工件坐標系的關系，再計算出小圓圓心角的變化范圍和橢圓曲線的變化范圍，問題就迎刃而解了。</span></p> <p class="MsoNormal"><span lang="EN-US"> 3.</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">圓弧螺紋的切削加工</span></p> <p class="MsoNormal"><span lang="EN-US"> 3.1</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">刀具的選擇</span></p> <p class="MsoNormal"><span lang="EN-US"> </span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">該螺紋如果使用中</span><span lang="EN-US">5</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">的圓弧刀，圓弧刀要磨出一定的螺旋升角，防止刀具的后刀面與工件發生干涉。螺紋到達底部時切削刃與工件接觸過多，容易引起振動，切削高強度材料時容易崩刀。若使用</span><span lang="EN-US">93</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">“尖刀，排屑比較容易，加工牙型表面質量比較好，但螺紋曲面要平緩，牙型深度不宜過深</span><span lang="EN-US">.</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">防止刀具與工件發生干涉。</span></p> <p class="MsoNormal"><span lang="EN-US"> 3. 2</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">螺紋切削用量的選擇</span></p> <p class="MsoNormal"><span lang="EN-US"> </span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">螺紋切削時，在考慮刀具的壽命的同時要保證螺紋質量和最佳切削速度，合理的走刀次數和進刀量對螺紋的質量有決定性的影響，圓弧刀轉速取</span><span lang="EN-US">200</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">對</span><span lang="EN-US">min(</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">轉速公式</span><span lang="EN-US">N-1200/P-K)</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">，尖刀轉速可以高一些</span><span lang="EN-US">300r/min</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">，切削深度不宜過大，進給速度為一個螺距</span><span lang="EN-US">F=6</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">，當然轉速和吃刀量還要根據機床的剛性，刀具的強度和切削材料的強度等具體情況而定。</span></p> <p class="MsoNormal"><span lang="EN-US"> 3. 3</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">螺紋的切削指令選擇</span></p> <p class="MsoNormal"><span lang="EN-US"> FANUC</span><span style="font-family:宋體; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">系統螺紋的加工指令有</span><span lang="EN-US">G32, G92,G76, G35/G36</span><span style="font-family:宋體;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">，但對于非圓曲面螺紋的加工，數控車系統沒有現成的螺紋加工指令，只有利用</span><span lang="EN-US">G32</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">指令結合非圓曲線輪廓宏程序加工。</span><span lang="EN-US">G32</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">螺紋切削指令格式為</span><span lang="EN-US">:</span></p> <p class="MsoNormal"><span lang="EN-US"> G32x (U)_ z (w)_ F_ x (U) , z (w)</span><span style="font-family:宋體; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">為螺紋切削的終點坐標值，</span><span lang="EN-US">F</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">為導程</span></p> <p class="MsoNormal"><span lang="EN-US">3. 4</span><span style="font-family:宋體; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">編程加工方法</span></p> <p class="MsoNormal"><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">方法一，使用尖刀加工圓弧螺紋。</span></p> <p class="MsoNormal"><span lang="EN-US"><img src="/upload/images/201408/14068846970529.jpg" alt="" /><br /> <!--[endif]--></span></p> <p class="MsoNormal"><span lang="EN-US"> (1)</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">螺紋行程的確定</span></p> <p class="MsoNormal"><span lang="EN-US"> </span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">在數控加工螺紋時，由于車床伺服系統本身有滯后性，在螺紋的起始段和停止段發生螺距不規則現象，也就是車螺紋時起始時有一個加速過程，結束時有一個減速過程，所以車螺紋時設置導入量和到處量。如上圖將螺紋進，退刀點偏移工件一個螺距。</span></p> <p class="MsoNormal"><span lang="EN-US"> (2)</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">小圓圓心角和橢圓起始，終止角的變化范圍</span></p> <p class="MsoNormal"><span lang="EN-US"> </span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">通過繪圖軟件</span><span lang="EN-US">CAD</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">可以方便標出小圓</span><span lang="EN-US">1</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">圓心坐標</span><span lang="EN-US">02 (24. 0, 19. 02)</span><span style="font-family:宋體; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">，小圓</span><span lang="EN-US">1</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">到</span><span lang="EN-US">9</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">起始和終止角度的變化范圍在</span><span lang="EN-US">[25, 155]</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">之間，</span><span lang="EN-US">(</span><span style="font-family: 宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">比賽的時候不需要標出小圓的起始和終止角，直接取</span><span lang="EN-US">[0,180]).</span><span style="font-family:宋體;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">橢圓曲線的起始角</span><span lang="EN-US">a</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">和終止角</span><span lang="EN-US">R</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">為</span><span lang="EN-US">:a</span><span style="font-family: 宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">二</span><span lang="EN-US">arccos (24/51. 5) =62. 2 0 R =180- a =117. 7 0</span></p> <p class="MsoNormal"><span lang="EN-US"> (3)</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">坐標系的疊加</span></p> <p class="MsoNormal"><span lang="EN-US"> </span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">工件坐標系，橢圓坐標系和小圓坐標系的坐標原點分別為</span><span lang="EN-US">0, O1</span><span style="font-family:宋體; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">和。</span><span lang="EN-US">2(</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">如圖</span><span lang="EN-US">2</span><span style="font-family:宋體;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: 宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">任意切削點</span><span lang="EN-US">A</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">的確定，在小圓坐標系下圓的參數方程和在橢圓坐標系下橢圓的方程分別為</span><span lang="EN-US">:</span></p> <p class="MsoNormal"><span lang="EN-US"><img src="/upload/images/201408/14068847076077.jpg" alt="" /><br /> <!--[endif]--></span></p> <p class="MsoNormal"><span lang="EN-US"> </span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">橢圓中心</span><span lang="EN-US">O1</span><span style="font-family: 宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">在工件坐標系下對應的坐標為</span><span lang="EN-US">(-18, 0)</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">，所以</span><span lang="EN-US">A</span><span style="font-family: 宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">在工件坐標系下疊加后對應方程為</span><span lang="EN-US">:</span></p> <p class="MsoNormal"><span lang="EN-US"> Z=2. 5}cos B +51. 5}cos B 1.-18</span></p> <p class="MsoNormal"><span lang="EN-US"> X=2. 5}cos B +21. 5}sin B 1.</span></p> <p class="MsoNormal"><span lang="EN-US"> (4)</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">程序的編寫</span></p> <p class="MsoNormal"><span lang="EN-US"> 00001</span></p> <p class="MsoNormal"><span lang="EN-US"> G40G97G99S300M03</span></p> <p class="MsoNormal"><span lang="EN-US"> T0202(930</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">裝</span><span lang="EN-US">350</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">刀片外圓刀</span><span lang="EN-US">)</span></p> <p class="MsoNormal"><span lang="EN-US"> GOOZ6. 0</span></p> <p class="MsoNormal"><span lang="EN-US"> X38. 04</span></p> <p class="MsoNormal"><span lang="EN-US"> #1</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">二一</span><span lang="EN-US">25</span></p> <p class="MsoNormal"><span lang="EN-US"> N10#2=2.5}COS[#1](</span><span style="font-family:宋體;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">小圓坐標系中</span><span lang="EN-US">Z</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">坐標</span><span lang="EN-US">)</span></p> <p class="MsoNormal"><span lang="EN-US"> #3=2. 5}SIN [#1](</span><span style="font-family:宋體;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">小圓坐標系中</span><span lang="EN-US">X</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">坐標</span><span lang="EN-US">)</span></p> <p class="MsoNormal"><span lang="EN-US"> GOOX[19.02*2+2}#3]Z[#2+6](</span><span style="font-family:宋體;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">螺紋切削起點</span><span lang="EN-US">)</span></p> <p class="MsoNormal"><span lang="EN-US"> #4=62. 2 0(</span><span style="font-family:宋體;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">橢圓曲線的起始角度</span><span lang="EN-US">)</span></p> <p class="MsoNormal"><span lang="EN-US"> N20#5=51.5}COS[#4](</span><span style="font-family:宋體;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">橢圓坐標系中</span><span lang="EN-US">Z</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">坐標</span><span lang="EN-US">)</span></p> <p class="MsoNormal"><span lang="EN-US"> #6=21. 5}SIN [#4](</span><span style="font-family:宋體;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">橢圓坐標系中</span><span lang="EN-US">X</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">坐標</span><span lang="EN-US">)</span></p> <p class="MsoNormal"><span lang="EN-US"> G32X[2.0}#6+2.0}#3]Z[#5+#2</span><span style="font-family:宋體;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">一</span><span lang="EN-US">18. 0]F6. 0</span><span style="font-family:宋體;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">坐標系疊</span><span lang="EN-US">)</span></p> <p class="MsoNormal"><span lang="EN-US"> #4=#4+2. 0(</span><span style="font-family:宋體;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">橢圓遞增步距</span><span lang="EN-US">20)</span></p> <p class="MsoNormal"><span lang="EN-US"> IF [#4LE117. 7] GOT020(</span><span style="font-family:宋體;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">條件判斷</span><span lang="EN-US">2)</span></p> <p class="MsoNormal"><span lang="EN-US"> GOOX100</span></p> <p class="MsoNormal"><span lang="EN-US"> Z6. 0</span></p> <p class="MsoNormal"><span lang="EN-US"> X38. 04</span></p> <p class="MsoNormal"><span lang="EN-US"> #1=#1-1(</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">小圓弧遞減步距</span><span lang="EN-US">10)</span></p> <p class="MsoNormal"><span lang="EN-US"> IF[#1 GE-155]GOTO10(</span><span style="font-family:宋體;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">條件判斷</span><span lang="EN-US">)</span></p> <p class="MsoNormal"><span lang="EN-US"> GOOX100</span></p> <p class="MsoNormal"><span lang="EN-US"> 2100</span></p> <p class="MsoNormal"><span lang="EN-US"> M30</span></p> <p class="MsoNormal"><span lang="EN-US"> </span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">以上程序陰影部分橢圓曲線的程序也可以用橢圓的標準方程編寫，值得注意的是橢圓的標準方程和參數方程編程時，由于逼近橢圓曲線的方式不同的，為了減少螺紋的誤差，橢圓曲線和螺紋的編程方法要統一。橢圓曲線加工精度與步距有關，步距越小，橢圓的精度越局。</span></p> <p class="MsoNormal"><span lang="EN-US"> </span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">方法二，使用成型刀加工圓弧螺紋。</span></p> <p class="MsoNormal"><span lang="EN-US"> (1)</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">宏程序的調用</span></p> <p class="MsoNormal"><span lang="EN-US"> </span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">功能</span><span lang="EN-US">:</span><span style="font-family: 宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">當指定</span><span lang="EN-US">G65</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">時，調用以地址</span><span lang="EN-US">P</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">指定的用戶宏程序，數據</span><span lang="EN-US">(</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">自變量</span><span lang="EN-US">)</span><span style="font-family: 宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">能傳遞到用戶宏程序中。</span></p> <p class="MsoNormal"><span lang="EN-US"> </span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">格式</span><span lang="EN-US">:G65P (p) L (I)(</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">自變量賦值</span><span lang="EN-US">)</span></p> <p class="MsoNormal"><span lang="EN-US"> (p)</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">要調用的程序號</span></p> <p class="MsoNormal"><span lang="EN-US"> (I)</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">重復次數</span><span lang="EN-US">(</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">省略時默認為</span><span lang="EN-US">1)</span></p> <p class="MsoNormal"><span lang="EN-US"> (</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">自變量賦值</span><span lang="EN-US">):</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">傳遞到宏程序的數據</span></p> <p class="MsoNormal"><span lang="EN-US"> (2)</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">吃刀量和刀具軌跡</span></p> <p class="MsoNormal"><span lang="EN-US"> </span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">由于使用圓弧刀車螺紋時，越靠近底部吃刀刃越寬，切削力越大，也容易振動，根據機床，刀具的具體情況分配吃刀量，第一刀量可以多一點，最后一刀量少點，刀具的軌跡如圖</span><span lang="EN-US">4</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">所示</span><span lang="EN-US">(O1</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">為螺紋切削起點，圓弧刀對刀時</span><span lang="EN-US">Z</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">方向必須是圓弧刀的中心</span><span lang="EN-US">)</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">。</span></p> <p class="MsoNormal"><span lang="EN-US"><img src="/upload/images/201408/14068847196631.jpg" alt="" /><br /> <!--[endif]--></span></p> <p class="MsoNormal"><span lang="EN-US">(3)</span><span style="font-family:宋體; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">程序的編寫</span></p> <p class="MsoNormal"><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">主程序</span></p> <p class="MsoNormal"><span lang="EN-US">00003</span></p> <p class="MsoNormal"><span lang="EN-US">G40G99G97S200M03</span></p> <p class="MsoNormal"><span lang="EN-US">T0303 (} 5</span><span style="font-family: 宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">圓弧刀</span><span lang="EN-US">)</span></p> <p class="MsoNormal"><span lang="EN-US">GOOZ6. 0</span></p> <p class="MsoNormal"><span lang="EN-US">X35. 08</span></p> <p class="MsoNormal"><span lang="EN-US">G65P0006K0. 4 (K</span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">地址對應變量</span><span lang="EN-US">#6)</span></p> <p class="MsoNormal"><span lang="EN-US">G65P0006K0. 8</span></p> <p class="MsoNormal"><span lang="EN-US">G65P0006K1.1</span></p> <p class="MsoNormal"><span lang="EN-US">G65P0006K1.4</span></p> <p class="MsoNormal"><span lang="EN-US">G65P0006K1.7</span></p> <p class="MsoNormal"><span lang="EN-US">G65P0006K1.9</span></p> <p class="MsoNormal"><span lang="EN-US">G65P0006K2.0</span></p> <p class="MsoNormal"><span lang="EN-US">GOOX100</span></p> <p class="MsoNormal"><span lang="EN-US">2100</span></p> <p class="MsoNormal"><span lang="EN-US">M30</span></p> <p class="MsoNormal"><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">子程序</span></p> <p class="MsoNormal"><span lang="EN-US">00006</span></p> <p class="MsoNormal"><span lang="EN-US">#1=24</span></p> <p class="MsoNormal"><span lang="EN-US">N20#2=20/50}SQRT[50.0*50.0-#1}#1]</span></p> <p class="MsoNormal"><span lang="EN-US"> G32X [2. 0}#2-#6] Z [#1-18. 0] F6. 0</span></p> <p class="MsoNormal"><span lang="EN-US"> #1=#1-6. 0</span></p> <p class="MsoNormal"><span lang="EN-US"> IF[#1 GE-24]GOT020</span></p> <p class="MsoNormal"><span lang="EN-US"> GOOX100</span></p> <p class="MsoNormal"><span lang="EN-US"> Z6</span></p> <p class="MsoNormal"><span lang="EN-US"> X35. 08</span></p> <p class="MsoNormal"><span lang="EN-US"> M99</span></p> <p class="MsoNormal"><span lang="EN-US"> </span><span style="font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">上面程序也可使用單一循環修改刀補值的方法來實現，在機床的摩號中修改每一刀切削深度值，其程序省略。</span></p> <p class="MsoNormal" style="margin-top:3.75pt;margin-right:0cm;margin-bottom: 3.75pt;margin-left:0cm;text-indent:10.5pt;mso-char-indent-count:1.0;line-height: 13.5pt"><span lang="EN-US"> </span><span lang="EN-US" style="font-family: Tahoma;">4.</span><span style="font-family: 宋體;">加工辦法對比和剖析</span><span lang="EN-US" style="font-family: Tahoma;"><o:p></o:p></span></p> <p class="MsoNormal" align="left" style="margin: 3.75pt 0cm; line-height: 13.5pt;"><span lang="EN-US" style="font-family: Tahoma;"> </span><span style="font-family: 宋體;">從以上的加工辦法看，運用尖刀編程繁瑣，但加工表面質量十分好，有必要注意的是牙型深度不宜過大不然刀具與工件發作干與。運用直徑為</span><span lang="EN-US" style="font-family: Tahoma;">5MM</span><span style="font-family: 宋體;">的成型刀運用單一循環修正刀補值的辦法編程十分簡略，在技術競賽中十分實用，但有一定的局限性，有時沒有牙型形狀的刀子。當牙型深度過大乃至大于于小圓半徑時，有必要挑選小于小圓半徑的圓弧刀，選用尖刀的編程辦法，將上述辦法聯系起來就可以了。</span><span lang="EN-US" style="font-family: Tahoma;"><o:p></o:p></span></p> <p class="MsoNormal" align="left" style="margin: 3.75pt 0cm; line-height: 13.5pt;"><span lang="EN-US" style="font-family: Tahoma;"> 5.</span><span style="font-family: 宋體;">結束語</span><span lang="EN-US" style="font-family: Tahoma;"><o:p></o:p></span></p> <p class="MsoNormal" align="left" style="margin: 3.75pt 0cm; line-height: 13.5pt;"><span lang="EN-US" style="font-family: Tahoma;"> </span><span style="font-family: 宋體;">筆者巧用非圓曲線概括宏程序聯系</span><span lang="EN-US" style="font-family: Tahoma;">G32</span><span style="font-family: 宋體;">螺紋切削指令的辦法，解決了曲面螺紋編程疑問，只需改動變量賦值，曲線方程或成型刀的形狀，就能習慣同類零件非圓曲面螺紋的編程與加工，在生產中有著實際意義。</span><span lang="EN-US" style="font-family: Tahoma;"><o:p></o:p></span></p> <p class="MsoNormal"><span lang="EN-US"> </span><b style="line-height: 13.5pt; text-align: center;"><span style="mso-bidi-font-size: 10.5pt;font-family:宋體;mso-bidi-font-family:宋體;mso-font-kerning:0pt">本文由</span></b><span lang="EN-US" style="line-height: 13.5pt; text-align: center; font-family: 宋體;"> </span><b style="line-height: 13.5pt; text-align: center;"><u><span style="mso-bidi-font-size:10.5pt;font-family:宋體;mso-bidi-font-family:宋體; mso-font-kerning:0pt">伯特利</span></u></b><b style="line-height: 13.5pt; text-align: center;"><span style="mso-bidi-font-size: 10.5pt;font-family:宋體;mso-bidi-font-family:宋體;mso-font-kerning:0pt">技術文章 <span lang="EN-US"> </span>整理發表，文章來自網絡僅參考學習，本站不承擔任何法律責任。</span></b></p> <p class="MsoNormal" style="margin-top:4.5pt;margin-right:0cm;margin-bottom:7.5pt; margin-left:0cm;line-height:13.5pt;mso-pagination:widow-orphan;mso-outline-level: 1"><span style="font-family: 宋體; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;">伯特利數控一直以盡心、盡力、盡意的態度把握每一臺</span><b><span style="font-family: Arial; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> </span></b><b><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;font-family:宋體;mso-bidi-font-family:宋體;mso-font-kerning:0pt"><a ><span lang="EN-US">加工中心</span></a></span></b><b><span style="font-family: 宋體; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;">、</span></b><b><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;font-family:宋體;mso-bidi-font-family:宋體;mso-font-kerning:0pt"><a ><span 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