【正文】 800mm/min 橫向 15～ 800mm/min 垂向 6～ 270mm/min 工作臺(tái)快速進(jìn)給范圍 縱向 2100mm/min 本科生 畢業(yè) 設(shè)計(jì) 4 重點(diǎn)工序的夾具、刀具、檢具的設(shè)計(jì)及設(shè)備的選擇 27 橫向 2100mm/min 垂向 880mm/min 主電機(jī)功率 4kw 進(jìn)給電機(jī)功率 機(jī)床外形尺寸 165015401920 mm 機(jī)床重量 1800Kg 電壓 /頻率 380/50V/Hz 本科生 畢業(yè) 設(shè)計(jì) 5 結(jié)論 28 5 結(jié)論 本次畢業(yè)設(shè)計(jì)主要介紹了柴油機(jī)凸輪軸的加工工藝 過(guò)程， 以柴油機(jī) F3000凸輪軸為例進(jìn)行了詳細(xì)的工藝設(shè)計(jì)， 根據(jù)畢業(yè)設(shè)計(jì)任務(wù)要求對(duì)柴油機(jī)凸輪軸的毛坯設(shè)計(jì)、熱處理工藝、機(jī)械加工工藝及重點(diǎn)工序的夾具、檢具、刀具進(jìn)行了設(shè)計(jì)，最后對(duì)重點(diǎn)工序的設(shè)備進(jìn)行了選擇。 通過(guò) 這次工藝設(shè)計(jì)，讓我對(duì)機(jī)加工藝方面的知識(shí)有了更加深刻的理解 。 凸輪軸作為配氣機(jī)構(gòu)的關(guān)鍵部件，其外形復(fù)雜，技術(shù)要求很高，因此在加工過(guò)程中 合理的選材、合理的 定位基準(zhǔn)的選擇 、合理的熱處理工藝 、 專用夾具檢具刀具的設(shè)計(jì) 以及設(shè)備的選擇 變得非常重要， 在本次設(shè)計(jì)過(guò)程中， 選用的材料為 45 鋼棒材，第二道工序銑端面打中心孔 凸輪軸實(shí)際加工選取的粗基準(zhǔn) 為凸輪軸支承軸頸的毛坯外柱圓面及其一個(gè)側(cè)面， 然后后面的加工精基準(zhǔn)的選擇是中心孔。凸輪軸的熱處理主要是正火和淬火 ，凸輪軸的支承軸頸和進(jìn)排氣凸輪表面進(jìn)行中頻淬火，凸輪頂部淬火層不小于 4 等。在 專用刀具夾具檢具方面 及設(shè)備選擇上 ，主要選取了銑鍵槽工藝進(jìn)行詳細(xì)介紹，刀具設(shè)計(jì)上主要介紹了鍵槽銑刀以及它的技術(shù)要求和使用說(shuō)明；檢具設(shè)計(jì)上主要介紹了鍵槽塞規(guī)以及它的公差帶的計(jì)算；夾具設(shè)計(jì)上主要介紹了 銑鍵槽夾具的部件及原理；設(shè)備選擇上主要介紹了立式銑床 X5030C 技術(shù)參數(shù)。 本畢業(yè)設(shè)計(jì)以柴油機(jī) F3000 凸輪軸加工工藝為例，制定 了 相應(yīng)工藝， 繪制了工藝圖，可 直接指導(dǎo)生產(chǎn)過(guò)程加工， 根據(jù)工藝生產(chǎn)的 產(chǎn)品加工質(zhì)量達(dá)到產(chǎn)品圖紙要求、加工效率 得到 高、生產(chǎn)成本 得到降低， 對(duì)企業(yè)的實(shí)際生產(chǎn)有著重要的意義。 本科生 畢業(yè) 設(shè)計(jì) 參考文獻(xiàn) 29 參考文獻(xiàn) [1] 劉云 .車用柴油機(jī)技術(shù)現(xiàn)狀及發(fā)展趨勢(shì)［ J］ .濰坊學(xué)院學(xué)報(bào)， 2021， 5(4). 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[13] 周龍 寶 .內(nèi)燃機(jī)學(xué) [M].北京：機(jī)械工業(yè)出版社 .2021. 重慶科技學(xué)院本科生 畢業(yè) 設(shè)計(jì) 致謝 30 致謝 四年的大學(xué)美好生活就快走入尾聲，我的校園生活就要?jiǎng)澤暇涮?hào)。從這里走出，對(duì)我的人生來(lái)說(shuō)，將是踏上一個(gè)新的征程，要把所學(xué)的知識(shí)應(yīng)用到實(shí)際工作中去。 首先，我要感謝重慶科技學(xué)院對(duì)我的四年培養(yǎng)，讓我學(xué)到許許多多的知識(shí)，感謝各位 老師在這四年對(duì)我孜孜不倦的教誨，在此致以我深深的謝意。 本次論文的開(kāi)題到最后的定稿成文，我遇到了很多關(guān)于工藝上的問(wèn)題，在指導(dǎo)老師和同學(xué)幫助下得到了解決，在此我要感謝我的導(dǎo)師賀澤龍副教授，他在至始至終給我無(wú)私的指導(dǎo)和幫助，悉心地對(duì)我的產(chǎn)品圖和工藝圖以及論文的修改進(jìn)行指導(dǎo)。 由于我的學(xué)術(shù)水平有限，所寫論文不足之處在所難免，懇請(qǐng)各位老師和學(xué)友批評(píng)和指正！ 重慶科技學(xué)院本科生 畢業(yè) 設(shè)計(jì) 致謝 31 為你提供優(yōu)秀的畢業(yè)論文參考資料，請(qǐng)您刪除以下內(nèi)容， O(∩ _∩ )O 謝謝！?。?A large group of tea merchants on camels and horses from Northwest China39。s Shaanxi province pass through a stop on the ancient Silk Road, Gansu39。s Zhangye city during their journey to Kazakhstan, May 5, 2021. The caravan, consisting of more than 100 camels, three horsedrawn carriages and four support vehicles, started the trip from Jingyang county in Shaanxi on Sept 19, 2021. It will pass through Gansu province and Xinjiang Uygur autonomous region, and finally arrive in Almaty, formerly known as AlmaAta, the largest city in Kazakhstan, and Dungan in Zhambyl province. The trip will cover about 15,000 kilometers and take the caravan more than one year to plete. The caravan is expected to return to Jingyang in March 2021. Then they will e back, carrying specialty products from Kazakhstan A small art troupe founded six decades ago has grown into a household name in the Inner Mongolia autonomous region. In the 1950s, Ulan Muqir Art Troupe was created by nine young musicians, who toured remote villages on horses and performed traditional Mongolian music and dances for nomadic families. The 54yearold was born in Tongliao, in eastern Inner Mongolia and joined the troupe in says there are 74 branch troupes across Inner Mongolia and actors give around 100 shows every year to local nomadic people. I can still recall the days when I toured with the troupe in the early 39。80s. We sat on the back of pickup trucks for hours. The sky was blue, and we couldn39。t help but sing the folk songs, Nasun says. The vastness of Inner Mongolia and the lack of entertainment options for people living there, made their lives lonely. The nomadic people were very excited about our visits, Nasun recalls. We didn39。t have a formal stage. The audience just sat on the grass. Usually, the performances became a big party with local people joining in. For him, the rewarding part about touring isn39。t just about sharing art with nomadic families but also about gaining inspiration for the music and dance. Ulan Muqir literally translates as red burgeon, and today39。s performers of the troupe still tour the region39。s villages and entertain nomadic families, but their fame has spread around the world. On May 16 and 17, nearly 100 singers and dancers from the troupe performed at Beijing39。s Poly Theater. Their show, titled Ulan Muqir on the Grassland, depicted the history and development of the art troupe. Being from the region allowed me to embrace the culture of Inner Mongolia and being a member of the troupe showed me where I belonged, Nasun, the art troupe39。s president, who is also a renowned tenor, tells China Daily. During a tour in 1985, he went to a village and met an elderly local man, who told him a story about his friendship with a solider from Shenyang, capital of Northeast China39。s Liaoning province, decades ago. The solider gave the old man a handmade saddle when they bid farewell. The story inspired Nasun to write Carved Saddle, a song that later became one of his most popular numbers. Now, every year, Nasun recruits young singers and dancers for the troupe. The troupe has also designed a new repertoire, which is mostly based on the daily lives of Mongolian people, especially the lives of nomadic families, and has bined contemporary musical elements with folk songs of the region. Haimu, a 25yearold khoomei (a local variant of overtone singing) singer, joined the troupe three years ago. Along with a sixmember band, he performs fast songs and soft ones that he writes－ all while playing the horsehead fiddle.Although I learned the piano since childhood and grew up lis