【正文】 tions 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 臥式鋼筋切斷機(jī)設(shè)計(jì) 目 錄 中文摘要 ……………………………………………………………………… .1 英文摘要 ……………………………………………………………………… .2 引言 ……………………………………………………………………………..3 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(dòng)結(jié)構(gòu)設(shè)計(jì) ................................................................................................................5 基本傳動(dòng)數(shù)據(jù)計(jì)算 ..........................................................................................................5 分配傳動(dòng)比 .....................................................................................................................5 計(jì)算機(jī)構(gòu)各軸的運(yùn)動(dòng)及動(dòng)力參數(shù) ........................................................................ 5 帶傳動(dòng)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(zhǎng)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(dòng)設(shè)計(jì) ...................................................................................................................8 第一級(jí)齒輪傳動(dòng)設(shè)計(jì) ......................................................................................................8 輪傳動(dòng)設(shè)計(jì) .....................................................................................................12 軸的校核 ..........................................................................................................................15 .....................................................................................................................15 .....................................................................................................................19 平 鍵的校核 .......................................................................................................................22 軸承的校核 ...................................................................................................................23 選軸承型號(hào) .................................................................................................................23 .........................................................................................................................24 第 4章 總結(jié) ..............................................................................................................................27 參考文 獻(xiàn) ...................................................................................................................................28 致謝 ............................................................................................................................................29 臥式鋼筋切斷機(jī)設(shè)計(jì) 臥式鋼筋切斷機(jī)設(shè)計(jì) 1 引言 1． 1 概述 鋼筋切斷機(jī)是鋼筋 在 加工 的過程中 必不可少 的設(shè)備 ，它主要用 于 房屋建筑、橋梁、隧道、電站、大型水利等工程中對(duì)鋼筋的定長(zhǎng)切斷。由于傳動(dòng)系統(tǒng)作 的是回轉(zhuǎn)運(yùn)動(dòng) ,而鋼筋切斷機(jī)的執(zhí)行機(jī)構(gòu)需要的直線往復(fù)運(yùn)動(dòng) ,為了實(shí)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(dòng)滾子從動(dòng)件機(jī)構(gòu) ,齒輪齒條機(jī)構(gòu)。兩級(jí)齒輪減速的主要優(yōu)點(diǎn)是 齒輪傳動(dòng)可用來傳遞 空間任意兩軸間的動(dòng)力 和運(yùn)動(dòng) ，并 且 具有功率范圍大，傳動(dòng)比準(zhǔn)確， 傳動(dòng)效率高， 使用壽命長(zhǎng)，工作安全可靠等 一系列 特點(diǎn)。選擇三級(jí)減速，先是一級(jí)帶減速，再 采用兩級(jí)齒輪減速。