【正文】 十四周：完善 開題報(bào)告， 撰寫設(shè)計(jì)說明書 (論文 )，查重、修改論文； 第十五周：最終完成設(shè)計(jì)說明書 (論文 )，打印圖紙、文件，參加答辯。 特色與創(chuàng)新 行改革，采用刷棉輥為刷輥式采棉機(jī)的主動(dòng)刷輥方式。 ，而且生產(chǎn)的成本也得到了下降。 “三絲問題” 指導(dǎo)教師 意 見 指導(dǎo)教師簽名： 年 月 日 教研室意見 院部意見 主任簽名： 年 月 日 教學(xué)院長(zhǎng)簽名： 年 月 日 南京工程學(xué)院畢業(yè)設(shè)計(jì)說明書（論文） 畢業(yè)設(shè)計(jì)說明書（論文）中文摘要 南京工程學(xué)院畢業(yè)設(shè)計(jì)說明書（論文） 畢業(yè)設(shè)計(jì)說明書（論文）外文摘要 Title The design of head and overall frame for Brush roller cotton picker Abstract Cotton picking machine is still one of the aspects of cotton industry in the longterm problem of The cotton picker design involves the 4MSG3 type cotton picker, a new brush roll cotton picker,Study its basic structure and working principle,and the various parts of its parameters, such as cotton brush roll angle, length and radius, arrangement and quantity were designed and this new type of cotton picker, a pair of rollers arranged in parallel as brush cotton picking parts, the passive harvesting method, improved active brush roller way cotton picker further solve the too many impurities in the picking process ,the cleaning difficulties after the cotton picking .though greatly improved but still not be able to catch up with the quality of labor. Keywords Cotton picking machine brush roll cotton picking 南京工程學(xué)院畢業(yè)設(shè)計(jì)說明書（論文） 目 錄 前 言 .......................................................................................................................................1 第一章 緒論 ............................................................................................................................3 研究刷輥式采棉機(jī)的背景及意義 .................................................................................3 研究背景 ...........................................................................................................3 研究意義 ...........................................................................................................4 國(guó)內(nèi)外研究現(xiàn)狀 ...........................................................................................................5 國(guó)內(nèi)研究現(xiàn)狀 ....................................................................................................5 國(guó)外研究現(xiàn)狀 ....................................................................................................6 第二章 棉株特性及采棉機(jī)工作原理 .........................................................................................8 總述 ............................................................................................................................8 棉株特性 ...........................................................................................................8 棉株的植株特性 .................................................................................................8 棉鈴的開放程度 .................................................................................................9 采摘頭（摘采裝置）的基本構(gòu)成 ..................................................................................9 采摘部件的工作原理 .................................................................................................. 12 第三章 運(yùn)動(dòng)方案設(shè)計(jì)與選取 .................................................................................................. 13 總體方案確定 ............................................................................................................ 13 各種數(shù)據(jù)參數(shù) ............................................................................................................ 13 主要結(jié)構(gòu)參數(shù) ............................................................................................................ 14 刷棉輥長(zhǎng)度及半徑 ........................................................................................... 14 縱向刷板 ......................................................................................................... 16 第四章 結(jié)構(gòu)設(shè)計(jì) ................................................................................................................... 18 采棉裝置刷棉輥間距的確定 ....................................................................................... 18 采棉裝置采棉通道距離的確定 .................................................................................... 19 刷棉輥轉(zhuǎn)速的確定 ..................................................................................................... 19 第五章 3D 建模與裝配 .......................................................................................................... 21 單一零件建模過程 ..................................................................................................... 21 螺紋孔制作過程 ......................................................................................................... 21 零件裝配過程 ............................................................................................................ 22 第六章 強(qiáng)度校核 ................................................................................................................... 24 螺紋緊固件聯(lián)接的基本類型及應(yīng)用 ............................................................................. 24 低速鏈強(qiáng)度計(jì)算 ........................................................................................................ 24 第七章 全文總結(jié)與展望 ......................................................................................................... 29 全文總結(jié) ................................................................................................................... 29 研究展望 ................................................................................................................... 30 參考文獻(xiàn) ............................................................................................................................... 31 致謝 ....................