摘要：<span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;"><span style="font-size:small;">西安激光切割加工怎樣做到高精度</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;"><span style="font-size:small;"><a href="http://www.it147.com/timemodel/secondctg/2013-10-26/3147512/1.html" target="_blank">西安激光切割</a>是激光加工中技術(shù)應(yīng)用非常廣泛的加工方法，是激光加工行業(yè)中一項(xiàng)特彆重要的應(yīng)用技術(shù)，激光切割已廣泛地應(yīng)用於汽車、航空、化工、等工業(yè)部門中。</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;"><span style="font-size:small;">西安激光切割的原理是將激光束照射到工件表麵時(shí)釋放的能量來使工件融化並蒸發(fā)，以達(dá)到切割和雕刻的目的。切割精度是衡量激光切割機(jī)加工效果的一個(gè)重要組成部分，但是激光切割精度也不完全取決於設(shè)備本身，而是由多方麵因素組成。</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;"><span style="font-size:small;">其中，影響西安激光切割加工精度的幾個(gè)重要因素：</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-size:small;"><span style="font-family:'Times New Roman';"><span lang="EN-US">1</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">、激光束通過聚焦後的光斑的大小：激光束聚集後的光斑越小，激光切割加工精度越高，特彆是切縫較小，*小的光斑可達(dá)</span><span style="font-family:'Times New Roman';"><span lang="EN-US">0.01mm</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">。</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-size:small;"><span style="font-family:'Times New Roman';"><span lang="EN-US">2</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">、工作臺(tái)的走位精度決定著激光切割加工的重複精度，工作臺(tái)精度越高，切割的精度越高。</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-size:small;"><span style="font-family:'Times New Roman';"><span lang="EN-US">3</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">、工件厚度越大，精度越低，切縫越大。由於激光光束為錐形，切縫也是錐形，厚度</span><span style="font-family:'Times New Roman';"><span lang="EN-US">0.3MM</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">的材料比</span><span style="font-family:'Times New Roman';"><span lang="EN-US">2MM</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">的切縫小的多。</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-size:small;"><span style="font-family:'Times New Roman';"><span lang="EN-US">4</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">、工件材質(zhì)對(duì)<a href="http://www.it147.com/timemodel/secondctg/2013-10-26/3147512/1.html" target="_blank">激光切割精度</a>有一定影響。同樣情況下，不同材質(zhì)的切割精度也稍有不同</span><span style="font-family:'Times New Roman';"><span lang="EN-US">,</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">即使是同一材質(zhì)</span><span style="font-family:'Times New Roman';"><span lang="EN-US">,</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">如果材料的成分不同</span><span style="font-family:'Times New Roman';"><span lang="EN-US">,</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">切割的精度也會(huì)有差異。</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;"><span style="font-size:small;">那麼，<a href="http://www.it147.com/timemodel/secondctg/2013-10-26/3147512/1.html" target="_blank">激光切割</a>加工時(shí)怎麼才能做到高精度呢？以下是提高激光切割加工精度的幾個(gè)關(guān)鍵技術(shù)：</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;"><span style="font-size:small;">一、焦點(diǎn)位置控製技術(shù)。聚焦透鏡焦深越小，焦點(diǎn)光斑直徑就越小，因此控製焦點(diǎn)相對(duì)於被切材料表麵的位置十分重要。</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;"><span style="font-size:small;">二、切割穿孔技術(shù)。任何一種熱切割技術(shù)，除少數(shù)情況可以從板邊緣開始外，一般都必須在板上穿一小孔。早先在激光衝壓複合機(jī)上是用衝頭先衝出一孔，然後再用激光從小孔處開始進(jìn)行切割。</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-size:small;"><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">三、嘴設(shè)計(jì)及氣流控製技術(shù)。激光切割鋼材時(shí)，氧氣和聚焦的激光束是通過噴嘴射到被切材料處，從而形成一個(gè)氣流束。對(duì)氣流的基本要**進(jìn)入切口的氣流量要大，速度要高，以便足夠的氧化使切口材料充分進(jìn)行放熱反應(yīng)</span><span style="font-family:'Times New Roman';"><span lang="EN-US">;</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">同時(shí)又有足夠的動(dòng)量將熔融材料噴射吹出。</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-size:small;"><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">激光切割無毛刺，皺折、精度高，優(yōu)於等離子切割。對(duì)許多機(jī)電製造行業(yè)來說，由於微機(jī)程序的現(xiàn)代化激光切割係統(tǒng)能方便切割不同形狀與尺寸的工件</span><span style="font-family:'Times New Roman';"><span lang="EN-US">(</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">工件圖紙也可修改</span><span style="font-family:'Times New Roman';"><span lang="EN-US">)</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">，它往往比衝切、模壓工藝更被優(yōu)先選用；儘管它加工速度慢於模衝，但它冇有模具消耗，無需修理模具，還節(jié)約更換模具時(shí)間，從而節(jié)省加工費(fèi)用，降低產(chǎn)品成本，所以從總體上講在經(jīng)濟(jì)上更為合算。這也正是其受到歡迎的原因。</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span lang="EN-US"><span style="font-family:'Times New Roman';font-size:small;">&nbsp;</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span>