【正文】
6401===iii(3) 分配減速器的各級傳動比按展開式布置,查閱有關(guān)標(biāo)準(zhǔn),取 i11=,則i22=5。第3章 傳動結(jié)構(gòu)設(shè)計 基本傳動數(shù)據(jù)計算 減速器的分配傳動比電動機(jī)型號為Y,滿載轉(zhuǎn)速為960 r/min。 功率計算刀的速度小于曲軸處的線速度。又由于本切斷機(jī)切斷的最大剛筋粗度為:mm。為了保證鋼筋能夠被完全剪斷,需要加剪切應(yīng)力應(yīng)超過材料本身的許應(yīng)剪應(yīng)力。由于傳動系統(tǒng)作的是回轉(zhuǎn)運動,而鋼筋切斷機(jī)的執(zhí)行機(jī)構(gòu)需要的直線往復(fù)運動,為了實現(xiàn)這種轉(zhuǎn)換,可以采用曲柄滑塊機(jī)構(gòu),盤行凸輪移動滾子從動件機(jī)構(gòu),齒輪齒條機(jī)構(gòu)。然后采用兩級齒輪減速,因為齒輪傳動可用來傳遞空間任意兩軸間的運動和動力,并具有功率范圍大,傳動效率高,傳動比準(zhǔn)確,使用壽命長,工作安全可靠等特點。第2章 電機(jī)選擇 傳動方案簡述:選擇三級減速,先是一級帶減速,再兩級齒輪減速。,又該裝置無離合器因此鋼筋的前進(jìn)的速度較高。其工作原理為電機(jī)轉(zhuǎn)動帶動曲軸轉(zhuǎn)動,鋼筋觸動到與倒臺相連定齒板,錘頭將擊打刀架,所以切刀將鋼筋切斷。下切實剪切系統(tǒng)的形式比較多,按照刀具的驅(qū)動形式答題可以分為:擺動式,錘擊式,液壓式。所以就導(dǎo)致鋼筋前進(jìn)的速度不能太大。在鋼筋通過倆切斷齒輪中間的縫隙時進(jìn)入承料架并觸動定長開關(guān)時,這樣電磁鐵就帶動離合器飛輪軸與主動齒輪軸相連接,主動齒輪旋轉(zhuǎn)一周,切斷齒輪將旋轉(zhuǎn)三分之一周,與此同時切斷鋼筋。而按照鋼筋切斷機(jī)的剪切方式有大致可以分為二種形式:旋轉(zhuǎn)式剪切,下移式剪切,現(xiàn)在對它們的工作原理進(jìn)行分別介紹。畢業(yè)設(shè)計是對三年大學(xué)所學(xué)知識的一個總結(jié)和綜合運用,也是走上工作崗位前的一次模擬訓(xùn)練。要求所要切斷鋼筋的最大直徑15mm,切斷速度為16次/分。面對競爭日益激烈的我國建筑機(jī)械市場,加強(qiáng)企業(yè)的經(jīng)營管理,加大科技投入,重視新技術(shù)、新產(chǎn)品的研究開發(fā),提高產(chǎn)品質(zhì)量和產(chǎn)品售后服務(wù)水平,積極、主動走向市場,使企業(yè)的產(chǎn)品不斷地滿足用戶的需求,盡快縮短與國外先進(jìn)企業(yè)的差距,無疑是我國鋼筋切斷機(jī)生產(chǎn)企業(yè)生存與發(fā)展的必由之路。國內(nèi)外切斷機(jī)的對比:由于切斷機(jī)技術(shù)含量低、易仿造、利潤不高等原因,所以廠家?guī)资陙砘揪S持現(xiàn)狀,發(fā)展不快,與國外同行相比具體有以下幾方面差距。關(guān)鍵詞:建筑 切斷 齒輪 鋼筋 曲柄滑 Abstract The article introduces a kind of architectural lie type steel cutting machines. Its operating principles are: It use electric motors level triangle belt transmission and secondary gear transmission to slowdown. Then, it drives the crank rotate, The crank connected to slide block and moving blades in the slippery way make the back and forth straight line sport, makes the moving blades and the fixed blade shear and cut steel. According to the working environment choice the type of electric motors, using horizontal installation, protection of the electrical, squirrelcage threephase asynchronous motor. Option three slowdown,first level belt slowdown, followed by the secondary gear deceleration. First level with the introduction of automated, because it has a buffer, absorb shock and operate smoothly, small noise, and can protect the over loading. Then introduce a secondary gear deceleration slowdown, because gear transmission can be used to transmit arbitrary space between the two axis movement and momentum, and the scope of power, transmission efficient transmission accurately, long using life, such as safe and reliable character. Power output by electric motors through slow down transmission system to import power to the executive body. As the system make rotation movement, The steel cutting machine needs the back and forth straight line sport ,in order to achieve this transformation, we can use c slidercrank institutions or gear and rack. I decided to consider realistic conditions using slidercrank as the executing machinery.Key words :cutting architectural reinforcing steel dar gear slidercrank 目 錄中文摘要……………………………………………………………………….1英文摘要……………………………………………………………………….2引言……………………………………………………………………………..3 概述..................................................................................................................................1 題目的選取...............................................