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　　隨著國(guó)家“十一五”節(jié)能減排政策的貫徹落實(shí)，門(mén)窗行業(yè)對(duì)于型材的節(jié)能效果也提出了新的要求。傳統(tǒng)的鋁合金門(mén)窗由于型材本身的特點(diǎn)—— 傳導(dǎo)散熱快，對(duì)于在冬季有效保持室內(nèi)溫度的要求不能有效的滿(mǎn)足，節(jié)能效果較差。新型的鋁塑門(mén)窗利用塑料型材 ( 隔熱性高于鋁型材 1250 倍 ) 將室內(nèi)外兩層鋁合金既隔開(kāi)又緊密連接成一個(gè)整體，比普通門(mén)窗熱量散失減少一半，降低取暖費(fèi)用 30% 左右，成為門(mén)窗行業(yè)新的發(fā)展趨勢(shì)。
　　門(mén)窗型材的變化推動(dòng)著門(mén)窗加工設(shè)備的種類(lèi)逐漸細(xì)化、品種逐漸多樣化，對(duì)生產(chǎn)工藝也有了更高的要求。門(mén)窗型材鋸切作為門(mén)窗生產(chǎn)流程的重要環(huán)節(jié)，其加工精度直接影響門(mén)窗的質(zhì)量與生產(chǎn)效率。目前鋁塑型材鋸切機(jī)床的加工精度較低，鋸切后的鋁型材主要靠后續(xù)的安裝彌補(bǔ)鋸切時(shí)的誤差，塑料型材靠后續(xù)的焊接彌補(bǔ)鋸
　濟(jì)南倫渠數(shù)控機(jī)電有限公司專(zhuān)業(yè)生產(chǎn)各種鋁塑加工設(shè)備，針對(duì)新型的切割鋸設(shè)備性能需求，提出了以西門(mén)子最新推出的小型 PLC S7-200 SMART 作為主控制器，同時(shí)采用了 SMART LINE 觸摸屏和 SINAMICS V60 伺服驅(qū)動(dòng)器。整套的西門(mén)子小型自動(dòng)化解決方案優(yōu)化了設(shè)備性能，調(diào)試也更加便利，其基本性能如下：
　　(1) 效率高：運(yùn)行速度可達(dá)每分鐘 20 米，切割 3mm 鋁板速度可達(dá)到 1.5 ～ 3m/min;
　　(2) 切力大：切割深度可達(dá) 3 ～ 8mm，切割口平滑，無(wú)毛邊，不變形;
　　(3) 精度高：能進(jìn)行準(zhǔn)確定位，定位精度可達(dá) 0.02mm;
　　(4) 性能穩(wěn)定：可 24 小時(shí)不間斷作業(yè)，廢品率低;
　　(5) 功能豐富：擁有斷點(diǎn)、斷電復(fù)位，加工時(shí)間預(yù)測(cè)等功能。
　　2.2 切割鋸原理結(jié)構(gòu)
　　鋁塑門(mén)窗雙頭切割鋸由機(jī)械系統(tǒng)和電氣系統(tǒng)構(gòu)成，前者包括鋸頭、固定機(jī)頭、移動(dòng)機(jī)頭、移動(dòng)機(jī)頭拖動(dòng)裝置、床身、托料架等機(jī)械結(jié)構(gòu)，后者由電氣箱、電氣控制操作臺(tái)等電氣系統(tǒng)及氣動(dòng)系統(tǒng)組成，用于實(shí)現(xiàn)對(duì)型材定尺定角度切割下料設(shè)備的控制。鋁塑門(mén)窗雙頭切割鋸上的切割刀具使用硬質(zhì)合金齒鋸片，切削速度快、效率高、加工精度高。該機(jī)也可用于木料加工，其兩個(gè)機(jī)頭可單獨(dú)工作也可同時(shí)工作，一次切出需要的長(zhǎng)度及切口角度。
　　(1) 鋸頭。鋸頭部分由左、右鋸頭組成。左鋸頭為固定鋸頭，右鋸頭隨拖板在圓導(dǎo)軌上左右移動(dòng)。拖板與導(dǎo)軌之間有直線運(yùn)動(dòng)副。鋸頭的左右運(yùn)動(dòng)輕快、靈活，保證了運(yùn)動(dòng)的平穩(wěn)性。鋸片的進(jìn)給由雙作用氣液阻尼缸完成。其氣動(dòng)控制系統(tǒng)具有無(wú)極調(diào)速的功能，根據(jù)加工需要，可調(diào)節(jié)其進(jìn)給及返回的速度，使之具有慢速進(jìn)給快速返回的功能;
　　(2) 床身。床身由低碳鋼矩形鋼管焊接而成，焊接后經(jīng)時(shí)效處理，保證了床身的剛度及穩(wěn)定性;
　　(3) 工作臺(tái)。固定工作臺(tái)和左鋸頭裝在一起，活動(dòng)工作臺(tái)隨拖板在導(dǎo)軌上可左右水平移動(dòng)。

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