φ1300滾輪滑座式熱鋸機的設(shè)計【說明書+CAD】
1300滾輪滑座式熱鋸機的設(shè)計【說明書+CAD】,說明書+CAD,1300滾輪滑座式熱鋸機的設(shè)計【說明書+CAD】,滾輪,滑座式熱,鋸機,設(shè)計,說明書,仿單,cad
VII遼寧科技大學(xué)本科生畢業(yè)設(shè)計(論文)1300熱鋸機摘要從分析不同熱鋸機的優(yōu)缺點著手,借鑒國內(nèi)外先進(jìn)的經(jīng)驗,并結(jié)合中國國情以及實際工作狀況,設(shè)計了1300滾輪滑座式熱鋸機。該熱鋸機結(jié)構(gòu)簡單、新穎、緊湊,傳動受力合理。運轉(zhuǎn)準(zhǔn)確可靠,制造成本低,備件費用低,安裝維修方便,各部位潤滑良好、密封結(jié)構(gòu)完善,裝備工藝性好,并總結(jié)了熱鋸機床在軋件生產(chǎn)中的作用及提出可能出現(xiàn)的問題,并介紹了該熱鋸機的設(shè)計思路及具體的設(shè)計步驟,并在參照了部分鋼廠現(xiàn)行的熱鋸機的結(jié)構(gòu)基礎(chǔ)上,做了有效而實際性的改進(jìn)。該滾輪滑座式熱鋸機的鋸片是由電動機通過皮帶傳動的。由皮帶帶動鋸片轉(zhuǎn)動能夠有效緩解振動,并且能夠使電動機遠(yuǎn)離軋件,減小高溫軋件對電機的熱輻射,同時也起到過載保護(hù)作用。本文詳細(xì)介紹了滾輪滑座式熱鋸機的結(jié)構(gòu)特點及工作原理,精心選擇了熱鋸機的結(jié)構(gòu)參數(shù)和力能參數(shù),并對熱鋸機各部分的選擇進(jìn)行了有理有據(jù)的分析并進(jìn)行了校核,使的整個熱鋸機的設(shè)計達(dá)到了畢業(yè)設(shè)計的要求。關(guān)鍵詞:熱鋸機 ;滾輪滑座式; 機構(gòu)參數(shù) ;力能參數(shù)1300 Heat SawAbstractBeginning of the advantages and defects on the roller slide type mill,using the experience of home and abroad for reference,thinking of our Chinese real status and real work conditions, a 1300 roller slide heat saw type mill is designed.The structure features and work principles of the mill are systematically expounded Particularly the structure of the heat saw is simple,new,and compact able,the transmission is reasonable forced.Accurate and reliable operation of heat saw,manufacture low-cost,low cost of spare parts,installation and maintenance convenience,each part is well lubricated,sealing well structured,the assembly process is good,and summed up the heat saw in rolled piece of production to the problems which may arise,introduced the heat saw design and specific steps to design and refer to the existing basis of the structure,made effective and practical improvements.The hot-sheer mills organ parameters and force parameters are selected meticulously.Analyses all kinds of parts of the roller slide heat saw type hot sheer mill and inspect them.The Design of Mill achieves the requirement of the design project for graduation.Keywords:heat saw;roller slide type;organ parameters;force parameters目 錄1 緒論11.1 鋸切機的分類11.1.1 按鋸切時鋼材處于靜止或運動狀態(tài)分為11.1.2 按鋸座能否移動分為11.1.3 按鋸片的進(jìn)鋸方式分為11.2 方案選擇21.2.1 設(shè)計給定條件32 總體方案設(shè)計42.1 熱鋸機的主傳動機構(gòu)方案設(shè)計42.2 熱鋸機的進(jìn)鋸機構(gòu)方案設(shè)計42.3 熱鋸機的橫移機構(gòu)方案設(shè)計43 熱鋸機的參數(shù)設(shè)計53.1 熱鋸機結(jié)構(gòu)參數(shù)設(shè)計53.1.1 鋸片直徑53.1.2 鋸片厚度及加盤直徑53.1.3 鋸軸高度及鋸片行程53.2 熱鋸機主要工藝參數(shù)設(shè)計63.2.1 鋸片圓周速度63.2.2 進(jìn)鋸速度64 熱鋸機鋸切功率的計算及電機的選擇74.1 鋸切作用力的計算74.1.1 鋸切力計算74.1.2 正壓力計算74.1.3 進(jìn)鋸阻力的計算84.2 鋸切功率的計算84.2.1 塑性變形和形成鋸屑的功率的計算94.2.2 金屬鋸槽側(cè)壁摩擦功率的計算94.2.3 其它功率的計算104.3 熱鋸機進(jìn)鋸電機的選擇104.3.1 類型選擇104.3.2 外殼結(jié)構(gòu)形式選擇104.3.3 電機電壓和轉(zhuǎn)速選擇104.3.4 電機容量選擇105 帶傳動設(shè)計115.1 確定計算功率115.2帶型的選擇115.3 確定帶輪的基準(zhǔn)直徑115.3.1 初選小帶輪的基準(zhǔn)直徑115.3.2 驗算皮帶的速度125.3.3 設(shè)計大帶輪直徑125.3.4 確定中心距并選擇帶的基本長度125.4 驗算主動輪的包角145.5 確定傳動帶的根數(shù)145.6 確定傳動帶的預(yù)緊力155.7 計算帶傳動的壓軸力166 進(jìn)鋸機構(gòu)齒輪設(shè)計176.1 按齒根彎曲強度設(shè)計176.1.1確定公式內(nèi)的各計算數(shù)值176.1.2齒輪幾何尺寸計算186.2齒條長度確定197 進(jìn)鋸機構(gòu)功率的計算及電機選擇207.1 進(jìn)鋸機構(gòu)靜力矩計算207.1.1 計算進(jìn)鋸機構(gòu)移動時產(chǎn)生的摩擦力矩207.1.2 計算鋸切時產(chǎn)生的負(fù)荷力矩217.1.3 進(jìn)鋸靜力矩計算21 7.2 起動力矩計算217.2.1 啟動時靜力矩的計算227.2.2 啟動時需克服的動力矩計算227.3 進(jìn)鋸機構(gòu)功率的計算及電機的選擇238 鋸切機構(gòu)主軸的設(shè)計及校核248.1 主軸設(shè)計248.1.2 軸的結(jié)構(gòu)設(shè)計258.2 主軸受力分析計算268.2.1 計算H面內(nèi)的力278.2.2 計算V面內(nèi)的力288.3 主軸的彎矩及扭矩計算298.3.1 在H面內(nèi)的彎、扭矩計算298.3.2 在V面內(nèi)的彎、扭矩計算298.3.3 合成彎矩及扭矩計算308.4 主軸校核308.4.1 軸上載荷的計算308.4.2 由彎扭合成應(yīng)力校核主軸強度318.4.3 軸的疲勞強度校核329 主軸軸承校核計算379.1 軸的主要參數(shù)承379.1.3 軸承的附加軸向力計算379.1.4 軸承軸向載荷及當(dāng)量動載荷的計算389.2 軸承壽命的計算3810.1 減速器的選擇3910.2 減速器校核3910.2.1 熱功率校核3911 潤滑方式4112 經(jīng)濟分析及環(huán)境保護(hù)4212.1 經(jīng)濟分析4212.2 環(huán)境保護(hù)4312 .2.1 廢水治理4312.2.2 固體廢物處理和綜合利用4312.2.3 噪聲處理43結(jié) 論44致 謝45參考文獻(xiàn)46第 57 頁遼寧科技大學(xué)本科生畢業(yè)設(shè)計(論文)1 緒論根據(jù)據(jù)切時軋件溫度的不同,鋸切機可分為熱鋸機機和冷鋸切機兩種形式。對于各種復(fù)雜斷面的型鋼在軋制后高溫情況下如用剪切機剪切定尺,切口要產(chǎn)生明顯的壓扁和彎曲,超出所要求的公差變動范圍。如果在冷壓狀態(tài)下用成型刀片剪切也不能保證剪切質(zhì)量。在這隨著軋制品種的改變,需要經(jīng)常更換刀片,很不方便,因此,切斷面復(fù)雜的高溫鋼材,如重軌、鋼軌薄管坯等通常采用鋸切機。鋸切機是用于切段各種復(fù)雜斷面的型鋼的重要的輔助設(shè)備之一。在很多情況下,整個軋鋼車間的生產(chǎn)量往往因為鋸切機的能力限制而受到影響。普通鋸切機是帶有能分離切屑的尖齒圓鋸盤。根據(jù)結(jié)構(gòu)不同,又分為如下各種情況:1.1 鋸切機的分類1.1.1 按鋸切時鋼材處于靜止或運動狀態(tài)分為: 普通熱鋸機和飛鋸。1.1.2 按鋸座能否移動分為: 移動鋸和固定鋸。1.1.3 按鋸片的進(jìn)鋸方式分為:擺式鋸:占據(jù)面積小,但鋸切行程受到限制。缺點:剛性差,振動大。進(jìn)鋸方式:手動或電動。鋸片傳動方式:皮帶傳動。杠桿式鋸:結(jié)構(gòu)簡單。缺點:不易用高壓水沖刷掉屑,出屑困難,適用于生產(chǎn)效率低的小型車間或?qū)iT為取樣。進(jìn)鋸方式:皮帶傳動。風(fēng)動送料固定鋸:結(jié)構(gòu)簡單,重量輕,事故少。單機生產(chǎn)效率高。缺點:鋸切質(zhì)量上存在較嚴(yán)重的斜頭、扁頭、彎頭等質(zhì)量問題,同時不能用于多臺鋸切機聯(lián)合鋸切,所以生產(chǎn)質(zhì)量高時,裝置兩臺軋機又較困難,只能另置一條生產(chǎn)線。進(jìn)料方式:氣缸送料。傳動方式:V帶傳動?;彿譃榛迨交鶕?jù)和滑輪式滑座鋸。前種的上滑臺、滑座通常是燕尾槽形滑板加工精度高,進(jìn)鋸機構(gòu)往往采用曲柄搖桿式。這種結(jié)構(gòu)給鋸切機帶來一系列缺點: 1)由于上下滑動,滑板表面潤滑不良,加上鋸屑易濺入滑動導(dǎo)軌面板極易損壞。2)曲柄式搖桿機構(gòu)進(jìn)鋸系統(tǒng)的鋸片行程小不能變速,生產(chǎn)率低,進(jìn)鋸機構(gòu)受到較大阻力時不能自動減速,因此鋸片易磨損。由于上述缺點,這種鋸切機的事故較多,而且滑板消耗較大,更換頻繁。因此不適用于中小軋機生產(chǎn)發(fā)展的需要。滾輪式滑座鋸由于滾輪代替了上滑板,摩擦力減小不易磨損,所以它逐漸淘汰了滑板式滑鋸。四連桿式熱鋸機優(yōu)點:工作行程大,工藝性能好,生產(chǎn)率高。隨著軋鋼生產(chǎn)的發(fā)展對連鑄及軋鋼生產(chǎn)線的熱鋸機的生產(chǎn)率和鋸切斷面質(zhì)量提出了越來越高的要求,但是現(xiàn)有的滑板式和四連桿式熱鋸機的生產(chǎn)率相比之下不高且鋸切質(zhì)量也不宜滿足要求,且鋸片壽命短。回轉(zhuǎn)鋸它是國外研制出的一種新式高效生產(chǎn)率的熱鋸機。優(yōu)點:鋸切時間短,質(zhì)量好,鋸切壽命長,能耗少,能鋸切大及特大的鋼坯,且鋸切期間的噪聲作用時間短,有較大的經(jīng)濟效果。1.2 方案選擇經(jīng)過對上述六種熱鋸機的結(jié)構(gòu)分析及優(yōu)缺點比較,并結(jié)合實際情況,查閱了國內(nèi)外有關(guān)熱鋸機特別是滾輪滑座式熱鋸機的有關(guān)資料,故對1300熱鋸機進(jìn)行了滾動滑座式方案設(shè)計及計算。 本熱鋸機具有以下幾個特點:(1) 鋸片由電動機通過皮帶帶動鋸片轉(zhuǎn)動,通過滾輪實現(xiàn)熱鋸機的送進(jìn)操作。(2) 通過滾輪實現(xiàn)熱鋸機的送進(jìn)操作。為使上滑臺在下滑座上滾動,下滑座上裝有支撐輥,支撐輥滾軸的兩端做成方形,并裝配在下滑座上的方槽中。(3) 送進(jìn)機構(gòu)通過送進(jìn)電動機,送進(jìn)齒輪和送進(jìn)齒條實現(xiàn),使上滑臺往復(fù)運動。(4) 軋件定尺長度改變后,必須通過橫移機構(gòu)調(diào)整熱鋸機之間的距離因此采用車輪式橫移機構(gòu)。(5) 橫移機構(gòu)電動機經(jīng)齒輪、蝸輪減速機、圓錐齒輪傳動輪軸,在輪軸的兩端裝有兩個主動車輪,然后和另一側(cè)的被動行走輪共同使熱鋸機橫移。為使橫移時行走平穩(wěn),前面的兩個車輪具有凸緣,后面的兩個車輪為平輪。1.2.1 設(shè)計給定條件(1) 鋸片的直徑:1300mm(2) 鋸片的最大行程:1000mm(3) 鋸片厚度:6-9mm(4) 進(jìn)給速度(前進(jìn)/后退):20-300mm/s(5) 鋸片的圓周速度:90-120m/s(6) 鋸切機構(gòu)采用皮帶傳動;進(jìn)鋸機構(gòu)采用齒輪齒條傳動;2 總體方案設(shè)計2.1 熱鋸機的主傳動機構(gòu)方案設(shè)計滾輪滑座式熱鋸機的鋸片是由電動機通過皮帶傳動的。由皮帶帶動鋸片轉(zhuǎn)動能夠有效緩解振動,并且能夠使電動機遠(yuǎn)離軋件,減小高溫軋件對電機的熱輻射,同時也起到過載保護(hù)作用。2.2 熱鋸機的進(jìn)鋸機構(gòu)方案設(shè)計送進(jìn)運動是通過送進(jìn)電機,經(jīng)送進(jìn)減速器,送進(jìn)齒輪和齒條實現(xiàn)的,這將使上滑臺往復(fù)運動。通過滾輪實現(xiàn)熱鋸機的送進(jìn)操作。為使上滑臺在下滑座上滾動,在下滑座上裝有支撐軌,每個支撐軌內(nèi)部裝有軸承。在上滑臺的地面裝有滑板,通過它們使整個上滑臺被支撐在下滑座的滾輪上。滾輪呈的V形槽狀,與其接觸的滑板也做成的V形,以防止上滑臺在送進(jìn)時產(chǎn)生側(cè)向移動。因為直流減速機結(jié)構(gòu)緊湊、體積小、承受過載能力強、能耗低性能優(yōu)越且保護(hù)性能好等特點,故采用直流電動機。2.3 熱鋸機的橫移機構(gòu)方案設(shè)計軋件定尺長度改變后,必須通過橫移機構(gòu)調(diào)整熱鋸機之間的距離此種熱鋸機采用車輪式橫移機構(gòu)。橫移機構(gòu)電動機,經(jīng)齒輪、蝸輪減速機、圓錐齒輪傳動輪軸,在輪軸兩端裝有兩個主動車輪具有凸緣,后面兩個車輪為平輪。采用車輪式橫移機構(gòu),必須裝有將熱鋸機夾緊在軌道上的夾持器,以防止熱鋸機在工作時因行走輪移動而改變軋材的定尺長度。3 熱鋸機的參數(shù)設(shè)計3.1 熱鋸機結(jié)構(gòu)參數(shù)設(shè)計熱鋸機結(jié)構(gòu)參數(shù)包括鋸片直徑、鋸片厚度、加盤直徑、鋸軸高度H、鋸片最大行程L等。3.1.1 鋸片直徑鋸片直徑是熱鋸機最主要的結(jié)構(gòu)參數(shù)。鋸片直徑D決定于被鋸切軋件的斷面尺寸,要保證鋸切最大高度軋件時,鋸軸上滑臺和夾盤能在軋件上自由通過。同時,為使被鋸切斷面能夠被完全鋸斷,鋸片下緣應(yīng)比軌道表面最少低40-80mm(新鋸片可達(dá)100-150mm),鋸片直徑允許重磨量5%-10%。本課題鋸片直徑D=1300。D=10A+300 式中A-方剛邊長(A=100mm)3.1.2 鋸片厚度及加盤直徑鋸片厚度過大將增加鋸切功率損耗,鋸片厚度過小會降低鋸片強度,并增加鋸切時鋸片的變形,一般情況下以經(jīng)驗公式選擇=(0.18-0.20) 本課題 D=1300mm,(6.50,7.21),課題中(6,9),所以選取=7.0mm。鋸片用夾盤和螺栓加緊裝在鋸軸上。當(dāng)鋸片直徑一定時,夾盤直徑過大,鋸片能鋸切的軋件最大高度減??;夾盤直徑過小,據(jù)切時鋸片變形和軸向振動加大,導(dǎo)致鋸片壽命降低。由經(jīng)驗公式:=(0.35-0.50)D,即(455,650),選取=550。3.1.3 鋸軸高度及鋸片行程鋸軸高度H為鋸軸軸心到軌道上表面的高度。滾輪滑座式熱鋸機軋件不動,熱鋸機向被切軋件移動,為此H不能太小,否則會在熱鋸機送進(jìn)鋸切過程中將被切件推開而不能進(jìn)行鋸切;同時當(dāng)鋸片直徑一定時鋸軸高度H又不能過大,否則會無法保證鋸片重磨后的最小直徑下緣應(yīng)低于軌道上表面的要求。由經(jīng)驗公式H=,即H(530,605),選取H=550mm。鋸片行程L由被鋸切軋件的最大寬度和并排鋸切的最多根數(shù)而定。本課題中L=1000mm。3.2 熱鋸機主要工藝參數(shù)設(shè)計熱鋸機主要工藝參數(shù)包括鋸片圓周速度V、進(jìn)鋸速度U等。3.2.1 鋸片圓周速度提高鋸片圓周速度V可以在同樣送進(jìn)速度U的條件下,減少每個鋸齒所鋸切的切屑厚度,從而減少每齒的受力。換言之,如果每齒所能承受的載荷一定,則提高V可為提高U創(chuàng)造條件,也可提高生產(chǎn)率。但隨著V的增加,由于離心力而引起的徑向拉應(yīng)力也將增加,從而降低了鋸齒所能承受的鋸切能力。因此,一般應(yīng)用的鋸片圓周速度V一般在100-200m/s以下,140m/s。課題中圓周速度V=90-120m/s,選取鋸片圓周速度V=100m/s。3.2.2 進(jìn)鋸速度進(jìn)鋸速度U根據(jù)被切軋件斷面的大小,進(jìn)鋸速度U也應(yīng)做相應(yīng)調(diào)整,一般取U=30-300mm/s。由經(jīng)驗公式U=,式中f-熱鋸機生產(chǎn)率;h-軋件高度;f=4000-6000/s,由經(jīng)驗公式得U=50/s4 熱鋸機鋸切功率的計算及電機的選擇4.1 鋸切作用力的計算鋸片傳動功率在鋸切軋件時,軋件作用在鋸片上的力有: 4.1.1 鋸切力計算由1得鋸切圓周力式中;P-據(jù)切時單位鋸切力(kg/mm),當(dāng)鋸切溫度為800-850時,P=(5.5+0.32s);S-鋸口寬度相當(dāng)于鋸片厚度,=0.70mm;U-進(jìn)鋸速度,U=50mm/s;h-軋件斷面高度,h=100mm;V-鋸片圓周速度,V=100m/s;代入公式得:4.1.2 正壓力計算由1得R=(15-18)代入公式得:4.1.3 進(jìn)鋸阻力的計算由受力分析圖得: ;代入公式得: ;則有: ;代入公式進(jìn)鋸阻力的水平分力為: 上抬力: ;代入公式得: 由此得作用在鋸片上的合力S有: ;代入得: ;與水平方向呈50.285。4.2 鋸切功率的計算由文獻(xiàn)1知鋸片的傳動功率由三部分組成: 式中:N-消耗于鋸齒使軋件產(chǎn)生塑性變形和形成鋸屑的功率;N-鋸片被鋸切金屬鋸槽側(cè)壁摩擦所消耗的功率;N-空載功率,包括機械傳動效率、鋸屑甩出所消耗的功率及空氣阻力等;4.2.1 塑性變形和形成鋸屑的功率的計算由文獻(xiàn)1,11-17得: ;式中: 鋸機生產(chǎn)率,f=5000mm/s; 鋸切時單位鋸切力(kg/mm),當(dāng)鋸切溫度為800-850時 mm/s;代入數(shù)據(jù)有: 4.2.2 金屬鋸槽側(cè)壁摩擦功率的計算 由文獻(xiàn)1,11-21知: ; 式中: 軋件與鋸片側(cè)面摩擦系數(shù),取 ; 鋸片圓周速度(m/s); 軋件對鋸片側(cè)面的直壓力,Q=; f-鋸片振擺值,由鋸片直徑與鋸切生產(chǎn)率決定,由文獻(xiàn)1,表11-5查得f=1.4; c-鋸片柔度,由文獻(xiàn)1,11-5可知c=0.016mm/kg;則: ;4.2.3 其它功率的計算 影響的因素很多,一般來講鋸機消耗于傳動件的功率和軸承摩擦、空氣阻力、把鋸屑甩出等所消耗的功率與總功率是成比例增加的。所以可以按以下公式計算。 ;計算時k=(0.1,0.3),取k=0.2。帶入數(shù)據(jù)得: =0.2(42.494+51.471)=18.793(kw);故綜上所述;即: N=42.494+51.471+18.793=112.758(kw)4.3 熱鋸機進(jìn)鋸電機的選擇4.3.1 類型選擇由于工作條件所限,本熱鋸機的鋸片要求負(fù)載基本平衡,對啟動制動無特殊條件要求,且要求長期運行。因此選擇了Y系列三相異步電動機作為鋸片軸部分的電機。4.3.2 外殼結(jié)構(gòu)形式選擇該熱鋸機所處的生產(chǎn)車間內(nèi)空氣中有較多的灰塵等,因此采用封閉式電動機。4.3.3 電機電壓和轉(zhuǎn)速選擇根據(jù)使用要求和現(xiàn)場條件選用依據(jù)文獻(xiàn)4,表9-2-8選擇電動機電壓為380V,轉(zhuǎn)速n=1480r/min。4.3.4 電機容量選擇由前面的計算得鋸片功率傳動中鋸切功率N=112.785kw。綜上由文獻(xiàn)4,表9-2-8查得選用Y315M-4型號電動機,額定功率P=132kw,轉(zhuǎn)速n=1480r/min,額定電壓為380V。5 帶傳動設(shè)計5.1 確定計算功率計算功率是根據(jù)傳遞功率P,并考慮到載荷性質(zhì)和每天工作時間等影響因素確定的即: ;式中: -計算功率,單位:kw; P-傳遞的額定功率,單位:kw; -工況系數(shù),由文獻(xiàn)3,表8-7查得;帶入數(shù)據(jù)計算得: 5.2帶型的選擇 根據(jù)計算功率和小帶輪轉(zhuǎn)速選定帶型為D型V帶。5.3 確定帶輪的基準(zhǔn)直徑5.3.1 初選小帶輪的基準(zhǔn)直徑 由文獻(xiàn)3,表8-6及表8-8選取,為提高V帶的壽命,應(yīng)選取較大直徑。因此;由得: 式中: -小帶輪轉(zhuǎn)速; -大帶輪轉(zhuǎn)速;;帶入數(shù)據(jù)得: ;代入得: 5.3.2 驗算皮帶的速度V 由文獻(xiàn)3,8-13得 帶入數(shù)據(jù)得: ;因為文獻(xiàn)3查得5m/sV30m/s合適,因此滿足要求。5.3.3 設(shè)計大帶輪直徑 由文獻(xiàn)3查得: 帶入數(shù)據(jù)有: 由文獻(xiàn)3,表8-8查得: 5.3.4 確定中心距并選擇帶的基本長度(1) 由文獻(xiàn)3查得中心矩大可以增大帶輪的包角同時減少單位時間內(nèi)帶的循環(huán)次數(shù),這有利于提高帶的壽命。但中心矩過大會加劇帶的波動,降低帶傳動的平穩(wěn)性同時也會增加帶傳動的整體尺寸。根據(jù)文獻(xiàn)3,8-20初選中心矩為: 帶入數(shù)據(jù)有: 即: 因此取得: (2) 根據(jù)已確定的中心矩,由帶傳動的幾何關(guān)系計算V帶所需的基準(zhǔn)長度。由文獻(xiàn)2,8-22得: 帶入數(shù)據(jù)有: 計算得: 根據(jù)文獻(xiàn)2,表8-2選取V帶的基準(zhǔn)長度;(3) 計算中心矩a及其變動范圍由文獻(xiàn)3,8-23得帶傳動的實際中心距為: 代入數(shù)據(jù)得: 解得: 則中心矩變化范圍為: 帶入數(shù)據(jù)得: 由此求得中心矩變化范圍為: 5.4 驗算主動輪的包角由文獻(xiàn)3,8-25查得應(yīng)使包角滿足: 帶入數(shù)據(jù)得: 解得: 滿足設(shè)計要求。5.5 確定傳動帶的根數(shù)由文獻(xiàn)3,8-26查得: 式中: 帶入數(shù)據(jù)得: 因此取得Z=9(根)。由機械設(shè)計書中查得傳動帶的根數(shù)一般不大于10根,因此滿足設(shè)計要求。5.6 確定傳動帶的預(yù)緊力由文獻(xiàn)3,8-27查得單根V帶的最小預(yù)緊力為: 式中: q-傳動帶單位長度質(zhì)量,由文獻(xiàn)3查得q=0.61kg/m;帶入數(shù)據(jù)得: 解得: 由文獻(xiàn)2查得:對于新安裝的V帶初拉力為: 對于運轉(zhuǎn)后的V帶初拉力為: 5.7 計算帶傳動的壓軸力由文獻(xiàn)2,8-28得: 帶入數(shù)據(jù)得: 6 進(jìn)鋸機構(gòu)齒輪設(shè)計6.1 按齒根彎曲強度設(shè)計進(jìn)鋸機構(gòu)采用開式齒輪齒條傳動,故采用漸開線標(biāo)準(zhǔn)直齒圓柱齒輪。根據(jù)(GB10095-88),精度等級采用8級。由文獻(xiàn)3,表10-1選擇齒輪材料為40Cr(調(diào)質(zhì)),硬度為241-286HBS。齒條材料為45鋼(調(diào)質(zhì)),硬度為217-255HBS。強度極限,屈服極限,初選齒輪齒數(shù)為。由文獻(xiàn)3,10-5得彎曲強度的設(shè)計公式為: 6.1.1確定公式內(nèi)的各計算數(shù)值1)由文獻(xiàn)3,圖10-24c查得齒輪齒條的齒根彎曲疲勞極限分別為: 2) 由文獻(xiàn)3,圖10-18查取彎曲疲勞壽命系數(shù): 3)計算彎曲疲勞許用應(yīng)力取彎曲疲勞安全系數(shù)s=1.4,由文獻(xiàn)3,10-12得: 帶入數(shù)據(jù)計算得: 4) 計算載荷系數(shù)K 由文獻(xiàn)3查得: 使用系數(shù): 動載系數(shù): 齒間載荷系數(shù): 齒向載荷分配系數(shù): 那么帶入數(shù)據(jù)求得: 5)查取齒形系數(shù)由文獻(xiàn)3,表10-5查得: 6)查取應(yīng)力校正系數(shù)由文獻(xiàn)3,圖10-18查得: 7) 計算齒輪模數(shù)代入數(shù)據(jù)計算得: 根據(jù)計算結(jié)果由文獻(xiàn)2,表10-1查得標(biāo)準(zhǔn)模數(shù)m=10。6.1.2齒輪幾何尺寸計算計算分度圓直徑: 計算齒輪寬度: 6.2齒條長度確定選取,則齒條長度為: 代入數(shù)據(jù)計算得: 由計算結(jié)果知道齒條長度大于鋸片行程,因此符合設(shè)計要求。7 進(jìn)鋸機構(gòu)功率的計算及電機選擇7.1 進(jìn)鋸機構(gòu)靜力矩計算由文獻(xiàn)4,11-25查得: 式中: 7.1.1 計算進(jìn)鋸機構(gòu)移動時產(chǎn)生的摩擦力矩由文獻(xiàn)4,11-26可知: 式中: 故綜上所述: 7.1.2 計算鋸切時產(chǎn)生的負(fù)荷力矩由文獻(xiàn)4,11-27得: 式中: 其他參數(shù)同上;則代入數(shù)據(jù)計算得: 7.1.3 進(jìn)鋸靜力矩計算 7.2 起動力矩計算由文獻(xiàn)4,11-27查得起動力矩: 式中: 7.2.1 啟動時靜力矩的計算由文獻(xiàn)4得: 7.2.2 啟動時需克服的動力矩計算由文獻(xiàn)4,11-30查得: 式中: 包括: 由文獻(xiàn)4中查得: 所以有: 帶入數(shù)據(jù)有: 綜上帶入數(shù)據(jù)有: 7.3 進(jìn)鋸機構(gòu)功率的計算及電機的選擇由機械公式得: 帶入數(shù)據(jù)有: 因為直流減速機結(jié)構(gòu)緊湊、體積小、承受過載能力強、能耗低、性能優(yōu)越,且保護(hù)性能好等優(yōu)點,因而采用直流電動機。由文獻(xiàn)4,表9-2-3查得選用Z2-51型號電動機。參數(shù)名稱額定功率(p)額定轉(zhuǎn)速(n)最高轉(zhuǎn)速(n)參數(shù)值2.2kw750r/min1500r/min8 鋸切機構(gòu)主軸的設(shè)計及校核8.1 主軸設(shè)計鋸片軸半裝配圖 圖8-1已知電機軸的傳遞功率,轉(zhuǎn)速n=1480r/min,主軸通過皮帶和電機相接,則主軸傳遞功率為。選擇主軸材料為45鋼經(jīng)調(diào)質(zhì)處理,由3,表15-1查得,其性能參數(shù)為: 由文獻(xiàn)3,15-2初步估算軸的最小直徑: 式中由機械設(shè)計書查得: ;帶入數(shù)據(jù)得: 圓整后取60mm.考慮到鋸片受到較大的沖擊載荷,且軸上開有鍵槽,故采用保守設(shè)計,軸最外端直徑為d=90mm。8.1.2 軸的結(jié)構(gòu)設(shè)計 軸的結(jié)構(gòu)設(shè)計圖 圖8-2擬定軸上零件裝配方案,如上圖所示。根據(jù)軸向定位要求確定軸的各段直徑和長度。通過裝配圖可看到最小直徑應(yīng)該是安裝鋸片的一端。根據(jù)鋸片的工作原理知,鋸切時產(chǎn)生很大的扭轉(zhuǎn)和彎矩,所以鋸片的夾盤要通過軸與孔的過盈配合來傳遞扭矩??梢酝ㄟ^加粗軸的直徑來滿足彎矩要求。將軸徑加粗到100mm。為了增大鋸片的穩(wěn)定性,確定軸與夾盤配合段的軸長為146mm.為了緊固夾盤要有軸肩,高度一般?。篽=(0.07-0.1)d;取h=12.5mm.此處軸肩直徑為125mm。初選滾動軸承,因軸承同時受到徑向力和軸向力作用,選用雙列調(diào)心滾子軸承22326,其基本尺寸為:為了滿足皮帶輪的軸向固定要求,軸的左端用軸套固定,右端用螺栓和軸端擋板來固定。通過鍵來傳遞扭矩,選擇鍵型號為:GB1096-97,基本尺寸為:。由文獻(xiàn)3,表15-2取軸端倒角為:。其余各處圓角見零件圖。8.2 主軸受力分析計算因為在鋸切的過程中,鋸齒在鋸割時,同時受到塑性變形阻力、鋸切力及剪切塑性變形阻力的作用。這些力將會傳遞到主軸上,對主軸產(chǎn)生彎矩和扭矩。在這些力的作用下,由于主軸由兩個軸承支承,對外和電機相連,對主軸產(chǎn)生一定的扭矩。主軸受力分析圖 圖8-3圖中: 由之前對鋸片受力的計算得: 帶入數(shù)據(jù)計算得: 式中: 由之前對帶輪的設(shè)計計算得: 帶入數(shù)據(jù)計算得: 式中: 8.2.1 計算H面內(nèi)的力由文獻(xiàn)4,8-12得: 即: 帶入數(shù)據(jù)計算得: 由文獻(xiàn)4,8-13得: 即: 帶入數(shù)據(jù)計算得: 由以上兩式計算得: 8.2.2 計算V面內(nèi)的力由文獻(xiàn)4,8-14得: 即: 帶入數(shù)據(jù)得: 由文獻(xiàn)4,8-15得: 即: 帶入數(shù)據(jù)計算得: 由以上兩式計算得: 8.3 主軸的彎矩及扭矩計算8.3.1 在H面內(nèi)的彎、扭矩計算由文獻(xiàn)4,8-16B點彎矩: 帶入數(shù)據(jù)計算得: 由文獻(xiàn)4,8-17C點彎矩: 帶入數(shù)據(jù)計算得: 8.3.2 在V面內(nèi)的彎、扭矩計算由文獻(xiàn)4,8-18B點彎矩: 帶入數(shù)據(jù)計算得: 由文獻(xiàn)4,8-19C點彎矩: 帶入數(shù)據(jù)計算得: 8.3.3 合成彎矩及扭矩計算由機械設(shè)計式得: 帶入數(shù)據(jù)計算得: 扭矩計算: 帶入數(shù)據(jù)計算得: 8.4 主軸校核8.4.1 軸上載荷的計算由主軸的機構(gòu)圖和計算簡圖再結(jié)合主軸的彎矩圖及扭矩圖,可以看出C處是主軸的危險截面。相關(guān)數(shù)據(jù)見下表:表8.1載荷水平面H豎直面V支反力R彎矩M合彎矩扭矩T8.4.2 由彎扭合成應(yīng)力校核主軸強度由機械設(shè)計書中,進(jìn)行校核計算式,一般只對軸上承受最大彎矩和最大扭矩的截面進(jìn)行(即危險截面)強度校核。根據(jù)文獻(xiàn)4,6-1-5查得: ;式中: 帶入數(shù)據(jù)計算得: 由計算結(jié)果知: 因而符合設(shè)計要求。8.4.3 軸的疲勞強度校核判斷軸的危險截面。從應(yīng)力集中對軸的疲勞強度的影響可知,截面的應(yīng)力集中最大;從所受載荷的角度,截面的應(yīng)力最大,但是應(yīng)力卻不集中,因而不必進(jìn)行校核計算。故而只需對截面處的左右兩側(cè)進(jìn)行校核即可。1) 截面左側(cè)疲勞強度校核由文獻(xiàn)3,表15-4查得抗彎截面系數(shù): 由文獻(xiàn)3,表15-4查得抗扭截面系數(shù): 則截面左側(cè)彎矩為: 截面上的扭矩為: 截面上的彎曲應(yīng)力為: 帶入數(shù)據(jù)計算得: 截面上的扭轉(zhuǎn)切應(yīng)力為: 帶入數(shù)據(jù)計算得: 軸的材料為45鋼調(diào)質(zhì)處理,由文獻(xiàn)3,表15-1查得: 截面上由于軸肩而形成的理論應(yīng)力集中系數(shù)按文獻(xiàn)3,附表3-2查取。由于: 經(jīng)插值法求得: 又由附圖3-1查得軸的材料的敏性系數(shù)為: 故有效應(yīng)力集中系數(shù)為; 帶入數(shù)據(jù)計算得: 由附圖3-2得尺寸系數(shù)由附圖3-3得扭轉(zhuǎn)尺寸系數(shù);軸按磨削加工,由附圖3-4得表面質(zhì)量系數(shù)為:軸的表面未經(jīng)強化處理,即。則由機械設(shè)計式3-12及3-14b得綜合系數(shù)為: 帶入數(shù)據(jù)計算得: 有由3-1及3-2得碳鋼的特性系數(shù)為: 于是計算安全系數(shù)的值,由文獻(xiàn)4式(15-6)(15-8)得: 帶入數(shù)據(jù)計算求得: 故綜上所述安全。2) 截面右側(cè)疲勞強度校核抗彎截面系數(shù)W按表15-4中公式計算得; 抗扭截面系數(shù)由機械設(shè)計式得: 彎矩M及彎曲應(yīng)力為: 扭矩及扭轉(zhuǎn)切應(yīng)力為: 過盈配合處的,由附表3-8用插值法求出,并取,于是有: ;軸按磨削加工,由附圖3-4得表面質(zhì)量系數(shù)為: 由此可得綜合系數(shù)為: 帶入數(shù)據(jù)計算得: 從此可得軸在截面右側(cè)的安全系數(shù)為: 帶入數(shù)據(jù)計算求得: 故該軸在危險截面的右側(cè)也是足夠的。因此綜上所述所設(shè)計的軸符合強度設(shè)計要求。9 主軸軸承校核計算9.1 軸的主要參數(shù)承由主軸的設(shè)計可知選用的軸承型號為雙列調(diào)心滾子軸承22326,其基本尺寸為:9.1.2 軸承徑向載荷的計算由機械設(shè)計式: 帶入數(shù)據(jù)計算得: 9.1.3 軸承的附加軸向力計算由機械設(shè)計式得: 式中:Y-計算系數(shù),查得Y=1.7帶入數(shù)據(jù)計算得: 9.1.4 軸承軸向載荷及當(dāng)量動載荷的計算由上式計算可得因為,所以左端壓緊右端放松。因此有: ;因為所以由文獻(xiàn)6機械設(shè)計手冊書查得所以由文獻(xiàn)5,13-8a得當(dāng)量動載荷: 式中:帶入數(shù)據(jù)計算得: 9.2 軸承壽命的計算由文獻(xiàn)3,13-5得軸承壽命: 式中: C-基本額定動載荷C=942kN; n-主軸轉(zhuǎn)速,n=1376r/min; P-當(dāng)量動載荷; -指數(shù),對于滾子軸承=10/3;帶入數(shù)據(jù)計算得: 故綜上所述軸承設(shè)計符合要求。10 減速器的選取及校核10.1 減速器的選擇由前面的設(shè)計已知,進(jìn)鋸機構(gòu)電機的輸出轉(zhuǎn)速,低速軸最大工作扭矩,而減速器傳動比為i=39.27。則按照強度條件選擇減速器,由文獻(xiàn)中式16.1-16.15查得: 式中: 代入公式得: 由文獻(xiàn)的減速器。型號為:HWT125-40-1 環(huán)面蝸桿減速器。10.2 減速器校核10.2.1 熱功率校核由文獻(xiàn)6,表18-4知當(dāng)i=40,減速器許用輸入熱功率,故不需要采用強制冷卻措施。10.2.2 軸懸臂負(fù)荷的校核 當(dāng)減速器輸出軸裝有帶輪時、齒輪或鏈板時需要校核軸伸懸臂負(fù)荷。本設(shè)計的輸出軸裝有齒輪,因此需要進(jìn)行校核。 由文獻(xiàn)6,18-3有: 式中: 帶入數(shù)據(jù)計算得: 故綜上該減速器負(fù)荷要求。11 潤滑方式常用的潤滑方式有稀油潤滑(礦物油潤滑)和甘油潤滑(潤滑脂潤滑)兩種。1.稀油潤滑一般用于要求對摩擦面實行液體或半液體摩擦的地方,以及除了潤滑外,還需要冷卻、清洗摩擦表面的地方。2.甘油潤滑的主要目的是減少摩擦以及保護(hù)摩擦表面不受腐蝕和防止外來水、氧化鐵皮等污物進(jìn)入。轉(zhuǎn)速較低或不經(jīng)常工作的摩擦面。常用甘油潤滑油潤滑不能循環(huán),因此消耗的油脂不能回收,但甘油潤滑設(shè)備比較簡單。稀油潤滑可以循環(huán)使用,但設(shè)備復(fù)雜。一般情況下,凡是甘油潤滑可以滿足要求的機械設(shè)備,可以不用稀油潤滑。稀油潤滑仍然是軋鋼車間主要的潤滑型式,由于稀油潤滑能有效的減少摩擦,有良好的潤滑效果,排散熱量冷卻工作表面以及保護(hù)工作表面不受腐蝕等作用。因此到目前為止軋鋼車間在所有齒輪嚙合部位、減速機、人字齒輪機座以及大部分軋機的軸承都還是采用稀油循環(huán)潤滑。不過近幾年發(fā)展起來一種新的潤滑方式油氣潤滑,它是以壓縮空氣為動力將稀油沿管道輸送到各潤滑點。其適用于潤滑滾動軸承,尤其在重負(fù)荷軋機軋輥軸承上得到廣泛應(yīng)用。油氣潤滑的優(yōu)點:(1)有利于環(huán)境保護(hù)。沒有油霧,周圍環(huán)境不受污染。(2)精密計量。油和空氣兩個成分都可分別精確計量,按照不同的需要輸送到每一個潤滑點。(3)與油的粘度無關(guān),凡是能流動的油都可以輸送。因為它不需要霧化,所以不存在高粘度霧化困難的問題。(4)可以監(jiān)控。潤滑系統(tǒng)的工作狀況很容易實現(xiàn)電子監(jiān)控。特別適合用于滾動軸承,尤其是重負(fù)荷的軋機軋輥軸承,氣冷效果好,可降低軸承的運行溫度,延長壽命。(5)耗油量小。僅為耗脂量的1/101/20。12 經(jīng)濟分析及環(huán)境保護(hù)12.1 經(jīng)濟分析根據(jù)市場調(diào)查,估計未來12年的投入與收入,列于表7.1。 表7.1 投資回收期 (單位:萬元)時間123456789101112投資300250150年收入200250300250300300300300300累積收入-300-550-700-500-25050300600900120015001800根據(jù)表7.1,可知:投資回收期: =(6-1)+(1/2.5) =5.4年式中 行業(yè)投資回收期,中小型機械年。因為 , 所以可以投資。12.2 環(huán)境保護(hù)車間的主要污染源及污染物為含氧化鐵皮和少量礦物油的濁廢水;廢乳化液;含塵廢氣;含微量SO2的煙氣;氧化鐵皮;管切頭和廢管;各種噪聲。本設(shè)計采取了以下措施治理上述污染物。12 .2.1 廢水治理1.凈環(huán)水循環(huán)使用,為保持水質(zhì)穩(wěn)定,有少量排水補入濁環(huán)水系統(tǒng)。2.含有氧化鐵皮和少量礦物油,經(jīng)沖渣溝進(jìn)入旋流沉淀池,經(jīng)沉淀后部分廢水返回用于沖渣溝沖氧化鐵皮,其余水送化學(xué)除油器加藥絮凝沉淀,除油器出水經(jīng)冷卻塔冷卻降溫后循環(huán)使用。3.旋流沉淀池鐵皮及沉降污泥用抓斗英文原文The first chapter saw knowledge introduction1889 - pool shell is a founded in 1889 in Japan sawing machine manufacturer, has made Japans first lathe.1898 - Company Profile: the company (August Moessner GmbH German Moessner + Co. KG) was founded in 1898, is located in the town 30 kilometers east of Stuttgart, Shah (Eschache), is a famous German manufacturing precision sawing machine.1919 - the long history of German BEHRINGER GmbH by Auguste BEHRINGER was founded in 1919, initially only a mechanical repair plant. After World War II built a foundry, and begin production of sawing machine. Today, the company still covers the production from raw materials to the entire process of the machine. At present, BEHRINGER the third generation of the family has taken over the management of the company. Superior quality of band saw machine is the companys leading product design, manufacturing, using the latest technology. The bed is firm, the saw bow heavy and hard, sawing efficient, accurate, durable system.1927 - Shanghai wood wing machinery company by Shanghai Woodworking Machinery Factory assets restructuring and the establishment, the original Shanghai woodworking machinery factory founded in 1927, is Chinas earliest woodworking machinery manufacturing enterprises, is one of the original mechanical and electrical industry key enterprises. The company inherited the intangible assets of Shanghai woodworking machinery factory brand and technology, technology, production, sales to retain part of backbone personnel. There are nearly a hundred kinds of products, product line is divided into saws, planers.1933 - the United States of America DOALL company in 1933 by Mr. Leighton A.Wilkie invented the worlds first sawing machine, the invention of the bimetal saw blade, hard alloy saw blade, high carbon steel blade, super powder alloy saw blade, saw blade is coated with titanium nitride. DOALL is famous for its quality.1944 - the Swedish company HAKANSSON is the worlds second production of double metal band saw blade enterprises, a long history, stable product quality, HAKANSSON band saw blade quality and cheap quality to make it become the majority of small and medium-sized enterprises preferred.1937 - Jinan two saw group, which was founded in 1937 from the old state-owned heavy group, China developed the first heavy Longmen planer has, has priority to domestic machine industry, Chinas first fully automatic car covering parts stamping line, so that the two machine tool group has become an important supplier of automobile manufacturers at home and abroad. The American car manufacturer general enterprise headquarters as well as in Canada, Thailand, Britain, Shanghai and Shandong, a plurality of stamping production line from all two saw group.1940 - in the spring is in the air., Baihua son to fight beautiful season, Chongqing saw factory all staff with the heavy machine deep kindness and good beginning, keeping pace with the times, pioneering and innovative, forge Pinbo, selfless contribution, created a brilliant new heavy machine, composed a colorful picture of heavy machine. Founded in April 1, 1940, Chongqing machine factory is the national machinery industry key enterprises focus, the birthplace of gear machine in china. After half century and hard Pinbo, from a small factory to grow as complete tooth facilities throughout the countrys largest production base, industry pacesetter.1946 - Amada Amada Corporation was founded in 1946, headquartered in japan. After years of development, the company has become one of the most professional manufacturer in the world of sheet metal machinery industry sales, product has been leading the world in sheet metal industry. Company main products: CNC punching, laser cutting machine, bending machine, shearing machine, band saw machine, all kinds of sheet metal mold etc. Amada International Trading (Shenzhen) Co., Ltd belong to the AMADA group company, the main business scope is to build the sales network in Chinas Southern China region, providing technical consulting, customer service, a full range of services to our customers.1951 - Hunan machine tool factory is one of the key enterprises of Chinas machine tool industry, the factory was founded in 1951, China has a long history, the largest metal saw and band saw factory specializing in the production of. Later in 1968, Hunan machine tool plant introduced from abroad the band sawing machine, and then copy. It should be said that the information is spirit, thinking ahead, the earliest start. The first batch of more than ten, the band saw blade is made of foreign exchange to buy, ten dollars per metre, three metre long band saw the value of five hundred or six hundred yuan. Due to the double metal band saw blade belongs to the tool consumables, unable to buy domestic production only band sawing machine, stranding. At present, Hunan machine tool factory main products are bow saw, circular saw, band saw machine, grinding machine, sand line (belt cutting machine and double metal band saw a series of five seats more than 70 varieties, products sold at home and abroad, favored by the majority of users.1958 - three - door saber-toothed tiger electromechanical Manufacturing Co. Ltd. (formerly Zhejiang three machine tool plant) was founded in 1958, has nearly fifty years of mechanical processing and manufacturing history, is the first production of one of the metal bow sawing machine manufacturing and the band sawing machine enterprises, is currently the focus of one of the production enterprises of our country metal band saw bed, China Machine Tool Industry Association member units, units of permanent sawing machine.1965 - Belgium HACO group was founded in 1965, is one of the worlds largest sheet metal equipment manufacturers, in dozens of countries around the world set up production plants. The main products: three axis machining center; 4 axis machining center; 5 axis machining center CNC sawing machine; double; single head saw; angle machine.1966 - Haian KingNet Machinery Manufacturing Co., Ltd. was founded in 1966, covers an area of 20 acres, the former state-owned Haian second machinery repair factory restructuring, has developed and produced a series of workers and peasants threshing machine, 5TFS-50 type tangential flow double drum half duplex thresher threshing machine, 5TJ-70 type, 9ST-1000 type feed processing complete sets of equipment and other machinery products, industrial products are G72 hack sawing machine, semi-automatic horizontal band sawing machine.1970 - Cangzhou Weite sawing machine annex production limited company is located in Cangzhou, founded in 1970, specializing in the production of all kinds of sawing machine protective cover, series of conveyor types towline, lamps and other machine annex.1972 - Cangzhou Yunhua CNC sawing machine annex limited enterprise: founded in 1972, the enterprise is sawing machine corporation members. With the progress and production facilities and strong scientific and technological strength, rich production experience and strict quality management scale, at home and abroad in the industry is the evaluation of large enterprises. The company specializes in the production of CNC sawing machine, sawing machine facilities and other kinds of conventional, sawing machine annex and parts.1982 - Shanghai min Chuan Juli brand band sawing machine, Mingawa founded in 1982, is the first domestic R & D, production of one of the band sawing machine. As a permanent member of the National Association of sawing machine. Products have been awarded the national new technology and new product exposition gold medal.1984 - Boye North saw Industry Co., Ltd. (former Hebei machine factory), batch production in 1984 the band sawing machine sawing machine, the largest professional factory, with various models of horizontal, vertical semi-automatic, fully automatic band sawing machine.1985 - Zhejiang Kaida Machinery Tools Co., Ltd., founded in 1985, specializing in the research and production of machine tools and the band sawing machine, has the abundant technical force, excellent equipment and advanced production technology, is a professional manufacturer of sawing machine. Company production of Al Qaeda brand of horizontal, vertical, vertical column type, Longmen type series automatic, semi-automatic metal band sawing machine, with high technology content, high efficiency and energy saving, reasonable structure, stable quality and so on. Zhejiang Chenlong sawing machine Limited by Share Ltd (formerly Chenlong sawing machine group) was founded in 1985, has a plant area of 66000 square meters, the total assets of 110000000 yuan, is one of the largest machine manufacturer at present, is the deputy director of China sawing industry association unit. With strong technical strength, sophisticated production equipment and advanced production technology, the enterprises first implementation of 6S management, passed the ISO9001 quality system certification, ISO14001 environmental system certification and OHSAS18001 occupation health and safety certification in the industry, and unremittingly for continuous improvement.1987 - Zhejiang julihuang sawing machine Group Co., Ltd. was founded in 1987, specializing in the production of julihuang sawing machine. brand series of products through the ISO9001 quality system certification, with advanced technology, stable performance, repeatedly by the municipal, provincial, national prize, has been awarded 8 National patents. Zhejiang Yandang Mountain Machine Tool Co., Ltd. was founded in 1987, specializing in metal band sawing machine and stone cutting band sawing machine, double metal band saw blade, diamond saw blade, hard alloy saw blade research and production.1988 - Zhejiang Weiren Machinery Co. Ltd. (Zhejiang Jinyun Qiujing Machinery Factory) was founded in 1988, has a plant area of 23000 square meters. Total assets of 18000000 yuan, is a professional manufacturer of cutting machine tools, key enterprises in the county. Wei Ren (the original refinement) card machine (GB4028 - 42120 horizontal series, large vertical, double column series.1990 - Zibo city Zichuan Hongjie machinery factory was founded in 1990, the company successfully developed the worlds first double column cylinder guide metal band sawing machine. Fill a blank cutting the industry at home and abroad. Beishouqinglai put on the market, it is a revolution of the sawing industry. Numerical control efficiency is China saw the development trendIn the traditional sense of metal cutting are often thought of as a simple cutting blanking process. With the development of modern manufacturing industry toward high efficiency, high precision and economic direction, cutting as the cutting point, has become the important link in the process of machining parts. Sawing can save material, reduce two processing capacity and improve the production efficiency, therefore saw especially automation machine has been widely used in iron and steel, machinery, automobile, shipbuilding, petroleum, mining and aerospace and other fields of national economy.Hacksawing machine, circular sawing machine, band saw is the three main forms of the sawing machine, band saw machine is gradually replacing the traditional bow saws and circular sawing machine and began to dominateAlthough the band sawing machine development, popularization of the relatively short history, but significant technical progress. The last century 60s cut 150mm steel 45 needs 15 20min, today only 1.5 2min, 30 years the efficiency is improved by 10 times. In the material utilization rate of band sawing machine also has obvious advantages, such as cutting off 100mms No. 45 steel mouth, saw compared to raw materials can be saved 56% band sawing machine with the bow, compared with the circular sawing machine to save raw materials up to 87.5%. Therefore, has the characteristics of high cutting speed, high precision, material loss is small, the band sawing machine. In addition, this machine, wide adaptability, low power consumption, simple operation, easy maintenance and the angle can be cut, and thus has more and more extensive application.The band sawing machine, double column band sawing machine with optimal performance. Double column band sawing machine with double guide column double hydraulic cylinder overall saw frame structure, using the method of parallel sawing, stiffness and lasting, which saw frame work stability, improve the saw belt life. With the rapid development of Chinas national economy in recent years, the band sawing machine gradually began to spread, there are a few manufacturers through technological innovation, developed a double upright band sawing machine. The developed countries in Europe and America, hacksaw machine has been eliminated, and the band saw rapid popularization, this trend is particularly evident in germany. The world number one saw German manufacturer BEHRINGER (BEHRINGER) Company as an example, its production of double upright band sawing machine has a history of over 20 years, has been the development of nearly 100 models, reached the technical level is high.The countrys largest production base of the band sawing machine Jinyun is the largest band sawing machine production base, a total of associated enterprise 64, production of the enterprises have more than 30 people, production accounted for 70% of the domestic market share. The face of fierce market competition, increase the countys band sawing machine industry technical innovation, promote structural adjustment and industrial upgrading. As the industry leading enterprises, Chenlong sawing machine group has established a special NC R & D center, spent huge sums of money to hire a batch of domestic top technical personnel engaged in high-precision special special product development. Recently, G5325-65-750 aluminum steel composite board saw cutting vertical band sawing machine project has been approved by the national technology innovation project identification, paper honeycomb Slitter G42130 160 Longmen main on horizontal band saw machine through the provincial-level new product appraisal band sawing machine. At the same time, the county also strengthen cooperation with domestic and foreign enterprises, the introduction of capital technology and equipment, to achieve industrial upgrading. Zhejiang Yuanda saw Industry Co., Ltd. in cooperation with Czech is a professional enterprise, the introduction of foreign investment of about 3000000 US dollars, both sides to jointly invest about 78000000 yuan to build the new band sawing machine production line, the project has started construction. Chenlong sawing machine group and Taiwan a famous Professional Company cooperation, the introduction of advanced technology and equipment in Taiwan company, development and production of one of the largest type of band sawing machine G42150, with remarkable results. The county to actively encourage enterprises to explore the international market, Chenlong sawing machine, julihuang, effective tool, Albert saw several industry leading enterprises delegation to participate in the India, Thailand, Malaysia International Machine Tool Fair and Canton Fair, products have been favored foreign, signed a large number of orders. 1-4 months of this year, the county band sawing machine export volume of 184000 dollars, year-on-year growth of 600%, export performance of enterprises from last years 1 increased to 4 . In the county town, registered the first saw the collective trademark. This is the pot town saw cluster Baotuan transformation key step to upgrade an. 23 enterprises to participate in the association can be used pot town saw trademark, which will play an important role in promoting regional brand influence.Structure and working principle of the second quarter sawing machine Sawing machine is in circular saw blade, saw band or blade for cutting, sawing circular metal material, the material, pipe material and profile of the machine tool. The machining precision sawing machines are generally not very high, much preparation workshop for cutting various bar, pipe, profile. The driving wheel and the driven wheel blade, saw blade cutting direction by the rail control rack control. By adjusting the rotation bearing the band saw blade adjusting straightening after sweeping cut the sawing away. By the hydraulic cylinder piston rod support rail control frame falling into sawing, sawing machine is equipped with a manual or hydraulic clamping and locking mechanism, and the hydraulic control valve switch.Physical construction: The main components of sawing machine with sitting; bed, column; the saw beam and the transmission mechanism; guide device; clamping; tensioning device; the feeding frame; hydraulic transmission systems; electric control system; lubrication and cooling system;Foundation: The box structure base is welded of steel plates, the bed, the column is fixed on the base cavity, the larger space, front left for the electric button control box, for electrical distribution box on the right side of the hydraulic oil tank, the steel plate welded, cavity is provided with a hydraulic station, hydraulic line, right side cutting coolant tank and pump the bottom four corners, foundation bolt.Lathe bed: The bed is cast iron, is fixed on the pedestal, column by column size, round column as a saw frame moving guide rail, is used to support the saw beam lifting movement, and ensure the accurate orientation, small cylindrical play a supporting role, so as to ensure the normal cutting blade. The middle clamping vise and manual feeding mechanism, have to undertake the work table finished parts connected vise clamping device for the front, left side of the clamping screw rod through the hydraulic clamping cylinder rod inner hole, turn the handwheel or press the button, the left jaw movement to the left or right.The saw beam and the transmission mechanism: Made of thick steel plate cutting and welding, good rigidity, the right side is fixed with a worm gear box, the gear box is fixedly connected with the driving wheel saw beam above, two synchronous rotation, the driven wheel and a saw blade tensioning position. Rotary motion by the main motor, belt pulley, worm by two speed drive for transfer to the driving wheel, driving wheel, saw blade driven by the driven wheel to achieve, saw blade speed is three (for sawing machines vary, some by adjusting the frequency converter speed regulation to realize the saw belt velocity).The saw blade guide device: Installed in the guide saw beam plate consists of left, right guiding arm and the guide head, left, right guiding arm can move along the dovetail (or the right guiding arm is fixed on the upright post cover), adjust the distance between the two guide arm than the size of the workpiece width about 40mm. The guide device is used to change the blade installation angle, the blade and table vertically, in order to ensure the accuracy of cutting, saw blade vibration is reduced, on the left and right guide arms are respectively provided with a set of guide wheels (rolling bearing) guide block and wear-resisting, guide blade back also wear-resistant alloy.Gripper mechanism: Right jaw is fixed on the bed, the clamping screw rod through hydraulic clamping cylinder bore, the left jaw to move along a guide rail connected by screw around, connection when left vice from the workpiece in 10-30MM. Hand control panel clamp or clamp pine by clamp, the clamp or loosen workpieces.Tensioning device: The tensioning device is composed of a slide seat, skateboard, wire rod, when the saw blade tension, torque wrench clockwise rotation tensioning saw blade, in the work of the state. Such as sawing machine in long time shutdown, torque wre
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