自動(dòng)打印機(jī)設(shè)計(jì)

..JIANGXIAGRICULTURALUNIVERSITY機(jī)械原理課程設(shè)計(jì)題目：自動(dòng)打印機(jī)設(shè)計(jì)學(xué)院：姓名：學(xué)號(hào)：專業(yè)：班級(jí)：指導(dǎo)教師：職稱：XXXX年X月..目錄TOC\o"1-3"\h\u1設(shè)計(jì)題目························································11.1設(shè)計(jì)題目：自動(dòng)打印機(jī)設(shè)計(jì)····································11.2設(shè)計(jì)數(shù)據(jù)與要求··············································11.3設(shè)計(jì)任務(wù)······················································12自動(dòng)打印機(jī)運(yùn)動(dòng)方案的擬定········································22.1工藝動(dòng)作分解··················································22.2運(yùn)動(dòng)循環(huán)圖····················································23機(jī)械運(yùn)動(dòng)方案的選擇和評(píng)定·········································33.1機(jī)械運(yùn)動(dòng)方案的評(píng)定標(biāo)準(zhǔn)········································33.2送料夾緊機(jī)構(gòu)的選型············································43.3打印機(jī)構(gòu)的選型···············································53.4輸出機(jī)構(gòu)的選型···············································64機(jī)械傳動(dòng)方案的擬定···············································74.1傳動(dòng)部件類別及其特點(diǎn)········································74.2執(zhí)行機(jī)構(gòu)的運(yùn)動(dòng)參數(shù)··········································94.3原動(dòng)機(jī)的運(yùn)動(dòng)參數(shù)············································94.4機(jī)械的傳動(dòng)方案············································104.5機(jī)械傳動(dòng)系統(tǒng)運(yùn)動(dòng)尺寸計(jì)算···································104.6機(jī)械執(zhí)行機(jī)構(gòu)運(yùn)動(dòng)尺寸計(jì)算···································105機(jī)械運(yùn)動(dòng)簡圖···················································11設(shè)計(jì)總結(jié)·······················································12參考文獻(xiàn)·······················································12附錄···························································13..1設(shè)計(jì)題目1.1設(shè)計(jì)題目：自動(dòng)打印機(jī)設(shè)計(jì)在某商品包裝好的紙盒上，為了某種需求而在商品上打印一種印記。它的主要?jiǎng)幼饔腥齻€(gè)：送料到達(dá)打印工位，然后打印記號(hào)，最后將產(chǎn)品輸出。1.2設(shè)計(jì)數(shù)據(jù)與要求紙盒尺寸：長100~150mm，寬70~100mm高30~50mm產(chǎn)品重量：5~10N自動(dòng)打印機(jī)的生產(chǎn)率：80次/min要求機(jī)構(gòu)的構(gòu)造簡單緊湊，運(yùn)動(dòng)靈活可靠，易于制造加工。1.3設(shè)計(jì)任務(wù)按工藝動(dòng)作要求擬定運(yùn)動(dòng)循環(huán)圖；進(jìn)展送料夾緊機(jī)構(gòu)、打印機(jī)構(gòu)和輸出機(jī)構(gòu)的選型；機(jī)械運(yùn)動(dòng)方案的評(píng)定和選擇；按選定的原動(dòng)機(jī)和執(zhí)行機(jī)構(gòu)的運(yùn)動(dòng)參數(shù)擬定機(jī)械傳動(dòng)方案；對(duì)機(jī)械傳動(dòng)系統(tǒng)和執(zhí)行機(jī)構(gòu)進(jìn)展運(yùn)動(dòng)尺寸計(jì)算；畫出機(jī)械運(yùn)動(dòng)簡圖。2自動(dòng)打印機(jī)運(yùn)動(dòng)循環(huán)圖方案的擬定2.1工藝動(dòng)作分解送料由送料機(jī)構(gòu)將紙盒推至打印部位，送料機(jī)構(gòu)回程。材料夾緊定位夾緊機(jī)構(gòu)從初始位置出發(fā)，到達(dá)紙盒上方。夾緊機(jī)構(gòu)夾緊紙盒，停歇一段時(shí)間，夾緊機(jī)構(gòu)回程。輸出材料輸出機(jī)構(gòu)將紙盒推出，輸出機(jī)構(gòu)回到初始位置。2.2運(yùn)動(dòng)循環(huán)圖3機(jī)械運(yùn)動(dòng)方案的選擇和評(píng)定3.1機(jī)械運(yùn)動(dòng)方案的評(píng)定標(biāo)準(zhǔn)平面連桿機(jī)構(gòu)優(yōu)點(diǎn)：1、制造方便2、易獲得較高的精度3、構(gòu)件之間的接觸靠幾何封閉來維系缺點(diǎn)：1、設(shè)計(jì)較為復(fù)雜2、機(jī)構(gòu)構(gòu)造復(fù)雜，工作效率低3、易發(fā)生自鎖現(xiàn)象凸輪機(jī)構(gòu)優(yōu)點(diǎn)：1、構(gòu)造簡單、緊湊、設(shè)計(jì)方便2、可實(shí)現(xiàn)從動(dòng)件任意預(yù)期運(yùn)動(dòng)缺點(diǎn)：1、點(diǎn)、線接觸易磨損2、凸輪輪廓加工困難3、行程不大3.2送料夾緊機(jī)構(gòu)的選型送料夾緊機(jī)構(gòu)方案一送料夾緊機(jī)構(gòu)方案二送料夾緊機(jī)構(gòu)采用方案二，送料夾緊機(jī)構(gòu)所走行程不大，應(yīng)用凸輪機(jī)構(gòu)更易加工。3.3打印機(jī)構(gòu)的選型打印機(jī)構(gòu)方案一打印機(jī)構(gòu)方案二打印機(jī)構(gòu)采用方案一，該機(jī)構(gòu)造型更穩(wěn)定，進(jìn)展打印時(shí)比方案二打印效果更穩(wěn)定，應(yīng)用機(jī)構(gòu)工作壽命更長3.4輸出機(jī)構(gòu)的選型輸出機(jī)構(gòu)方案一輸出機(jī)構(gòu)方案二輸出機(jī)構(gòu)采用方案二，方案二相比方案一而言，更易加工，綜合造價(jià)也更低。4機(jī)械傳動(dòng)方案4.1傳動(dòng)部件類別、特點(diǎn)及其選擇〔1〕帶傳動(dòng)〔2〕齒輪傳動(dòng)〔3〕蝸桿傳動(dòng)〔4〕鏈傳動(dòng)類別帶傳動(dòng)齒輪傳動(dòng)蝸桿傳動(dòng)鏈傳動(dòng)特點(diǎn)傳動(dòng)平穩(wěn)、構(gòu)造簡單、本錢低、使用維護(hù)方便、有良好的撓性和彈性、過載打滑。瞬時(shí)傳動(dòng)比不準(zhǔn)確、帶壽命低、軸上載荷較大、傳動(dòng)裝置外部尺寸大、效率低。構(gòu)造緊湊、工作可靠、傳動(dòng)平穩(wěn)、效率高、壽命長、能保證恒定的傳動(dòng)比，而且其傳遞的功率和適用的速度圍大。故齒輪機(jī)構(gòu)廣泛用于機(jī)械傳動(dòng)中。但是齒輪機(jī)構(gòu)的制造安裝費(fèi)用高、低精度齒輪傳動(dòng)的噪聲大。可以得到很大的傳動(dòng)比，比交織軸斜齒輪機(jī)構(gòu)緊湊。兩輪嚙合齒面間為線接觸，其承載能力大大高于交織軸斜齒輪機(jī)構(gòu)。蝸桿傳動(dòng)相當(dāng)于螺旋傳動(dòng)，為多齒嚙合傳動(dòng)，故傳動(dòng)平穩(wěn)、噪音很小。鏈傳動(dòng)平均傳動(dòng)比準(zhǔn)確,傳動(dòng)效率高，軸間距離適應(yīng)圍較大，能在溫度較高、濕度較大的環(huán)境中使用；但鏈傳動(dòng)一般只能用作平行軸間傳動(dòng)，且其瞬時(shí)傳動(dòng)比波動(dòng)，傳動(dòng)噪聲較大。傳動(dòng)部件的選擇：自動(dòng)打印機(jī)選擇帶傳動(dòng)和齒輪傳動(dòng)，帶傳動(dòng)和齒輪傳動(dòng)都比擬穩(wěn)定，且?guī)鲃?dòng)本錢低，更換也較簡單。4.2執(zhí)行機(jī)構(gòu)的運(yùn)動(dòng)參數(shù)紙盒取長100mm，寬100mm，高50mm。執(zhí)行構(gòu)件動(dòng)作時(shí)間分配軸轉(zhuǎn)角送料夾緊機(jī)構(gòu)初始位置停頓推程定位停歇回程完畢位置停歇1/9s2/9s6/9s2/9s1/9s30°60°180°60°30°打印機(jī)構(gòu)初始位置停頓推程打印停歇回程完畢位置停歇3/9s2/9s2/9s2/9s3/9s90°60°60°60°90°輸出機(jī)構(gòu)推程回程6/9s6/9s180°180°4.3原動(dòng)機(jī)的運(yùn)動(dòng)參數(shù)自動(dòng)打印機(jī)的生產(chǎn)率：80次/min選擇電機(jī)如下：型號(hào)功率/kw電流/A轉(zhuǎn)速/〔r/min〕滿載效率/%功率因素/(cos/)Y2-132S-637.496081.00.76堵轉(zhuǎn)電流/實(shí)際電流堵轉(zhuǎn)轉(zhuǎn)矩/額定轉(zhuǎn)矩最大轉(zhuǎn)矩/額定轉(zhuǎn)矩6.52.12.14.4機(jī)械的傳動(dòng)方案4.5機(jī)械傳動(dòng)系統(tǒng)運(yùn)動(dòng)尺寸計(jì)算電動(dòng)機(jī)轉(zhuǎn)速是960r/min,生產(chǎn)率是80個(gè)/min，所以傳動(dòng)比是12:1。帶輪一與帶輪二傳動(dòng)比為4，帶傳動(dòng)一與齒輪一傳動(dòng)比為1，齒輪一與齒輪二之間傳動(dòng)比為1，齒輪二與齒輪三之間傳動(dòng)比為4，其余齒輪傳動(dòng)比為1。所選齒輪模數(shù)m=3,壓力角α=20°，齒頂高系數(shù)為1.0，標(biāo)準(zhǔn)直齒圓柱齒輪的頂隙系數(shù)為0.25，堆齒輪的頂隙系數(shù)為0.2。帶輪一為皮帶輪，直徑為140mm，那么帶輪二的直徑為560mm。齒輪一齒數(shù)為18，其余齒輪齒數(shù)為72。4.6機(jī)械執(zhí)行機(jī)構(gòu)運(yùn)動(dòng)尺寸計(jì)算送料夾緊機(jī)構(gòu)：其推塊與擋板之間的最短距離為100mm。打印機(jī)構(gòu)：打印部位和底板最短距離為50mm。輸出機(jī)構(gòu)：短桿長度為400mm，超過紙盒長度。5機(jī)械運(yùn)動(dòng)簡圖設(shè)計(jì)總結(jié)由于實(shí)力有限，各方面軟件應(yīng)用能力不強(qiáng)，因而未能使該課程設(shè)計(jì)更加完善。但通過一個(gè)禮拜的課程設(shè)計(jì)，在瀏覽其它學(xué)校的課程設(shè)計(jì)以及圖書館的檔案資料時(shí)，發(fā)現(xiàn)自己對(duì)機(jī)械行業(yè)的知識(shí)確確實(shí)實(shí)了解的不是很多。很多專業(yè)術(shù)語看不懂，很多圖也不知道怎么畫出來的，公式數(shù)據(jù)也不知道如何調(diào)整。剛開場(chǎng)由于對(duì)自動(dòng)打印機(jī)的名字了解的不夠，以為是平常見到的打印機(jī)，因此在看了一天半的打印機(jī)機(jī)構(gòu)方面的書，信心滿滿的打算開場(chǎng)設(shè)計(jì)時(shí)，才發(fā)現(xiàn)自己要設(shè)計(jì)的打印機(jī)根本不是平常所見，而是一種用于紙盒打印的打印機(jī)。但總歸還是有不少的收獲的，至少在下次設(shè)計(jì)時(shí)，可以少走很多彎路。也由于在設(shè)計(jì)時(shí)遇見了許多問題，也使我認(rèn)識(shí)了自己的很多缺乏之處。參考文獻(xiàn)[1]文緯吳克堅(jiān)機(jī)械原理〔第七版〕高等教