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<li><a title="數(shù)控文章" href="/bethel/news">數(shù)控文章</a></li> </ol> </nav> </div> <!--/sub_menu--><!-- 面包屑導(dǎo)航結(jié)束 --> <!-- 頁面標(biāo)題開始 --> <div id="n1l1njb9b" class="title"> <h3><a>龍門加工中心整機(jī)動(dòng)態(tài)特性分析<small></small></a></h3> </div> <!-- 頁面標(biāo)題結(jié)束 --> <hr class="featurette-divider"> <!-- 中部開始 --> <div id="n1l1njb9b" class="container"> <!-- 正文 --> <div id="n1l1njb9b" class="lead" id="print"> <p>1 數(shù)控<a target="_blank">龍門</a><a target="_blank">加工中心</a>整體方案</p><p>數(shù)控龍門<a target="_blank">加工中心</a>的平臺(tái)跨距大，作業(yè)速度快，整機(jī)性能對(duì)作業(yè)效率與加工質(zhì)量影響極大。橫梁結(jié)構(gòu)質(zhì)量大、剛度強(qiáng)是影響 整機(jī)靈活性與定位精度的重要部件。本次研究通過模擬雙橫梁結(jié)構(gòu)對(duì)數(shù)控龍門<a target="_blank">加工中心</a>整體方案進(jìn)行設(shè)計(jì)，圖1即為在設(shè)計(jì)軟件中模擬出的數(shù)控<a target="_blank">龍門加工中心</a>結(jié)構(gòu)示意圖。</p><p><img src="/upload/images/201810/15401878319086.png" title="15401878319086.png" alt="圖片.png"/></p><p>1.床身 2.靜橫梁一 3.靜橫梁二 4.動(dòng)橫梁</p><p>5.滑塊 6.滑枕 7.A\C雙擺銑頭 8.工件毛坯圖1 <a target="_blank">龍門加工中心</a>的結(jié)構(gòu)示意圖</p><p>2 <a target="_blank">機(jī)床</a>受力分析</p><p><a target="_blank">數(shù)控機(jī)床</a>加速快、進(jìn)給速度高，在進(jìn)行性能評(píng)估時(shí)不能忽略慣性對(duì)<a target="_blank">機(jī)床</a>的影響。本次研究利用ADAMS軟件的動(dòng)力學(xué)分析功能對(duì)機(jī)床受力情況進(jìn)行研究。首先建立龍門加工中心的動(dòng)力學(xué)模型，如圖2所示；然后在立柱與床身、地面之間分別施加約束，在床身與靜橫梁之間、滑塊與滑枕之間、靜橫梁動(dòng)與橫梁 之間分別建立直線移動(dòng)副；并將加速度設(shè)為g，分析此時(shí)數(shù)控 機(jī)床各部件的受力情況。當(dāng)機(jī)床部件沿著Y軸作加速度為g的直線運(yùn)動(dòng)時(shí)，ADAMS軟件分析靜橫梁在X軸與Y軸方向的受力均為85kN左右；當(dāng)機(jī)床部件沿著X軸運(yùn)動(dòng)時(shí)，ADAMS軟件分析動(dòng)橫梁在X軸與Z軸方向的受力均為34.5kN左右。再對(duì)傳統(tǒng)機(jī)床結(jié)構(gòu)在相同運(yùn)動(dòng)條件下各部件的受力情況進(jìn)行分析，橫梁在X軸方向的受力約為266kN，遠(yuǎn)超雙橫梁結(jié)構(gòu)下機(jī)床各部件 所承受的壓力。</p><p><img src="/upload/images/201810/15401878397194.png" title="15401878397194.png" alt="圖片.png"/></p><p>1.床身 2.橫梁 3.滑塊 4.滑枕 5.A\C雙擺銑頭 6.工件毛坯圖2 龍門加工中心的動(dòng)力學(xué)模型</p><p><br/></p><p>3 機(jī)床有限元模型及動(dòng)態(tài)特性</p><p>本文利用Hypermesh軟件構(gòu)建機(jī)床的有限元模型。首先建 立數(shù)控龍門加工中心的三維幾何模型，其次導(dǎo)入到處理軟件進(jìn)行求解分析，然后再導(dǎo)入Hypermesh軟件中，建立有限元模型。在 有限元模型中，可以運(yùn)用Ansys軟件對(duì)機(jī)床模態(tài)進(jìn)行解析，分析 機(jī)床的動(dòng)態(tài)特性。</p><p>動(dòng)態(tài)特性是指機(jī)床在運(yùn)行狀態(tài)下的穩(wěn)定性，是影響工件的加工質(zhì)量、刀具系統(tǒng)維護(hù)等的重要參數(shù)，尤其在現(xiàn)代機(jī)械加工行業(yè)，<a target="_blank">數(shù)控機(jī)床</a>的切削速度進(jìn)一步加快，動(dòng)態(tài)特性分析已經(jīng)成為機(jī)床設(shè)計(jì)與評(píng)估的重要內(nèi)容。通過機(jī)床的有限元模型對(duì)其動(dòng)態(tài)特性進(jìn)行分析，發(fā)現(xiàn)影響機(jī)床性能的因素主要包括以下幾個(gè)方面：</p><p>1）結(jié)合部的阻尼特性和剛性。組成龍門加工中心的零部件較多，各零部件間連接方式復(fù)雜多樣，零部件之間的連接區(qū)域稱為結(jié)合部，結(jié)合部的阻尼特性和剛性是影響機(jī)床整體動(dòng)態(tài)性能的重要因素。統(tǒng)計(jì)數(shù)據(jù)表明，機(jī)床振動(dòng)問題中約六成是由結(jié) 合部引起的。</p><p>2）靜態(tài)剛度是影響機(jī)床動(dòng)態(tài)特性的另一重要因素。由于滑枕位于橫梁中間位置時(shí)機(jī)床受力最大，變形最明顯，選擇這個(gè)位置作為靜態(tài)剛度的初試分析位置，可得到更嚴(yán)謹(jǐn)?shù)臏y試結(jié)果。</p><p>3）數(shù)控機(jī)床的加速快、進(jìn)給速度高，啟動(dòng)和運(yùn)行需要的驅(qū)動(dòng)力都較大，這一過程中機(jī)床性能也會(huì)受到影響。借助有限元 模型對(duì)機(jī)床動(dòng)態(tài)特性進(jìn)行預(yù)估和分析，能夠有效促進(jìn)機(jī)床結(jié)構(gòu)的優(yōu)化，對(duì)機(jī)床設(shè)計(jì)和制造具有極為重要的意義。</p><p><br/></p></div> <div id="n1l1njb9b" class="blank30"></div> <!-- tag --> <div id="n1l1njb9b" class="blank10"></div> 標(biāo)簽： <a href='/index.php?case=tag&act=show&tag=%E9%BE%99%E9%97%A8%E5%8A%A0%E5%B7%A5%E4%B8%AD%E5%BF%83' target='_blank'>龍門加工中心</a> <!-- 分類 --> <div id="n1l1njb9b" class="blank10"></div> 分類： <a href='/bethel/type/jnc/type-1.html' target='_blank'>加工中心</a> <div id="n1l1njb9b" class="blank30"></div> <!--自動(dòng)調(diào)用自定義字段--> <div id="n1l1njb9b" class="blank20"></div> <div id="n1l1njb9b" class="blank30"></div> <!-- 投票 --> <script src="/index.php?case=vote&act=view&aid=2256"></script> <!-- 自定義表單開始 --> <!-- 自定義表單結(jié)束 --> <div id="n1l1njb9b" class="blank60"></div> <!-- 上下頁開始 --> <div class="n1l1njb9b" id="page"> <strong>上一篇</strong><a href="/bethel/news/show_2255.html">數(shù)控龍門鏜銑加工中心ATT識(shí)碼系統(tǒng)維修</a> <div id="n1l1njb9b" class="blank10"></div> <strong>下一篇</strong><a href="/bethel/news/show_2257.html">落地鏜銑加工中心主軸箱平衡系統(tǒng)研究</a> </div> <!-- 上下頁結(jié)束 --> </div><!-- /container --> <!-- 相關(guān)文章開始 --> <div id="n1l1njb9b" class="blank60"></div> <!-- 頁面標(biāo)題開始 --> <div id="n1l1njb9b" class="title"> <h3><a><a href='/index.php?case=tag&act=show&tag=%E9%BE%99%E9%97%A8%E5%8A%A0%E5%B7%A5%E4%B8%AD%E5%BF%83' target='_blank'>龍門加工中心</a> <small>相關(guān)內(nèi)容</small></a></h3> <p></p> <span>——</span> </div> <!-- 頁面標(biāo)題結(jié)束 --> <hr class="featurette-divider"> <div id="n1l1njb9b" class="container list-container"> <!-- 內(nèi)容列表開始 --> <div id="n1l1njb9b" class="news-list list-border list-border-w"> <div id="n1l1njb9b" class="list-date"> <span>12</span> <p>2019-09</p> </div> <h4><a title="CNC龍門加工中心的專項(xiàng)修理方案" href="/bethel/news/show_2501.html" target="_blank">CNC龍門加工中心的專項(xiàng)修理方案</a></h4> <p>1 設(shè)備簡介 XK2130 數(shù)控龍門加工中心，武漢重型機(jī)床廠生產(chǎn)，2007 年到貨，2009 年9 月安裝調(diào)試完成投入生產(chǎn)，工作節(jié)奏為兩班制， 設(shè)備總體狀況良好，目前在用，未進(jìn)行過大修。2 設(shè)備現(xiàn)狀說明 目前設(shè)備的幾何精度及位置精度超差，使精密工件及精加工工件不能滿足圖紙要求… <a href="/bethel/news/show_2501.html" target="_blank">[了解更多]</a></p> </div> <div id="n1l1njb9b" class="news-list list-border list-border-w"> <div id="n1l1njb9b" class="list-date"> <span>21</span> <p>2020-10</p> </div> <h4><a title="龍門加工中心兩線一硬系列2" href="/bethel/cnc/show_2371.html" target="_blank">龍門加工中心兩線一硬系列2</a></h4> <p>優(yōu)秀的基本結(jié)構(gòu)是剛性的保證，高效率、大范圍加工如你所愿龍門系列 床身,立柱床身, 立柱在最佳位置上采取對(duì)于強(qiáng)力切削時(shí)的高頻振動(dòng)和扭轉(zhuǎn)施加了加強(qiáng)筋的強(qiáng)韌的結(jié)構(gòu)。X、Y軸導(dǎo)軌采用了高載性滾柱式導(dǎo)軌，Z軸導(dǎo)軌采用高剛高載性矩型滑軌，長期保持著高扭矩、高精度和高剛性。機(jī)床性能YUJIAN… <a href="/bethel/cnc/show_2371.html" target="_blank">[了解更多]</a></p> </div> <div id="n1l1njb9b" class="news-list list-border list-border-w"> <div id="n1l1njb9b" class="list-date"> <span>21</span> <p>2020-10</p> </div> <h4><a title="龍門加工中心方滑枕系列" href="/bethel/cnc/show_2368.html" target="_blank">龍門加工中心方滑枕系列</a></h4> <p>… <a href="/bethel/cnc/show_2368.html" target="_blank">[了解更多]</a></p> </div> <div id="n1l1njb9b" class="news-list list-border list-border-w"> <div id="n1l1njb9b" class="list-date"> <span>06</span> <p>2018-11</p> </div> <h4><a title="840D系統(tǒng)龍門加工中心深孔鉆削時(shí)刀具過載保護(hù)的研究" href="/bethel/news/show_2266.html" target="_blank">840D系統(tǒng)龍門加工中心深孔鉆削時(shí)刀具過</a></h4> <p>數(shù)控龍門加工中心有很多優(yōu)點(diǎn)，例如性能優(yōu)越，結(jié)構(gòu)簡單，剛性好，加工效率高，操作方便等，所以在機(jī)械制造領(lǐng)域，龍門加工中心應(yīng)用非常廣泛。轉(zhuǎn)向架是軌道客車上的一個(gè)重要部件，其上有很多深孔，我們用數(shù)控龍門加工中心加工深孔時(shí)，經(jīng)常出現(xiàn)刀具折斷。經(jīng)過分析得出，造成刀具折斷的原因是在深孔加工過程… <a href="/bethel/news/show_2266.html" target="_blank">[了解更多]</a></p> </div> <div id="n1l1njb9b" class="news-list list-border list-border-w"> <div id="n1l1njb9b" class="list-date"> <span>01</span> <p>2018-11</p> </div> <h4><a title="龍門加工中心整機(jī)動(dòng)態(tài)特性分析" href="/bethel/news/show_2256.html" target="_blank">龍門加工中心整機(jī)動(dòng)態(tài)特性分析</a></h4> <p>1 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