【正文】 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(diǎn)。 2 3 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。畢業(yè)設(shè)計(jì)是對 三年大學(xué)所學(xué)知識的一個總結(jié)，也是走上工作崗位前的一次模擬訓(xùn)練。要求切斷鋼筋的最大直徑 50mm，切斷速度為 26 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： 切斷 建筑 鋼筋 齒輪 曲柄滑塊lie type steel cutting machines’designing Abstract： This 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. Keywords ： cutting architectural reinforcing steel dar gear slidercrank 目 錄 第 1 章 引言 ...............................................................................................................................1 概述 ..................................................................................................................................1 題目的選取 ......................................................................................................................1 鋼 筋切斷機(jī)的原理 ..........................................................................................................1 第 2 章 電機(jī)選擇 ........................................................................................................................2 切斷鋼筋需用 力計(jì)算 ......................................................................................................2 功率計(jì)算 ..........................................................................................................................3 第 3 章 傳動結(jié)構(gòu)設(shè)計(jì) ................................................................................................................5 基本傳動數(shù)據(jù)計(jì)算 ..........................................................................................................5 分配傳動比 .....................................................................................................................5 計(jì)算機(jī)構(gòu)各軸的運(yùn)動及動力參數(shù) ........................................................................ 5 帶傳動設(shè)計(jì) .......................................................................................................................6 帶型的確定 .....................................................................................................................6 帶輪基準(zhǔn)直徑 .................................................................................................................6 帶速的確定 .....................................................................................................................6 中心距、帶長及包角的確定 .........................................................................................6 確定帶的根數(shù) .................................................................................................................7 張緊力 ............................................................................................................................ 7 作用在軸上的載荷 .........................................................................................................7 帶輪結(jié)構(gòu)與尺寸見零件圖 .............................................................................................7 齒輪傳動設(shè)計(jì) ...................................................................................................................8 第一級齒輪傳動設(shè)計(jì) ......................................................................................................8 第二級齒輪傳動設(shè)計(jì) .....................................................................................................12 軸的校核 ..........................................................................................................................15 一軸的校核 .....................................................................................................................15 三軸的校核 .....................................................................................................................19 平 鍵的校核 .......................................................................................................................22 軸承的校核 ...................................................................................................................23 初選軸承型號 .................................................................................................................23 壽命計(jì)算 .........................................................................................................................24 第 4 章 總結(jié) ...........................