【正文】 方案一 4工藝路線方案二 4工藝方案的分析與比較 4（四）、機(jī)械加工余量、工序尺寸及毛坯尺寸的確定 5 底面和兩側(cè)面 5 內(nèi)孔216。32H7 8工序五：鉆M8 10工序六：磨削 12工序七：刮研 12三、課程設(shè)計(jì)心得體會(huì) 13四、參考文獻(xiàn) 14序 言 本課程設(shè)計(jì)是學(xué)生在學(xué)完機(jī)械制造工藝學(xué)課程的一個(gè)綜合性和實(shí)踐性很強(qiáng)的教學(xué)環(huán)節(jié)，通過課程設(shè)計(jì)，能綜合運(yùn)用所學(xué)基本理論以及在生產(chǎn)實(shí)習(xí)中學(xué)到的實(shí)踐知識(shí)進(jìn)行工藝及結(jié)構(gòu)設(shè)計(jì)的基本訓(xùn)練，掌握機(jī)械制造過程中的加工方法、加工裝備等基本知識(shí)，提高學(xué)生分析和解決實(shí)際工程問題的能力，為后續(xù)課程的學(xué)習(xí)及今后從事科學(xué)研究、工程技術(shù)工作打下較堅(jiān)實(shí)的基礎(chǔ)。（2）學(xué)會(huì)使用手冊(cè)以及圖表資料。數(shù)控車床根據(jù)其功能，刀架上可安裝的刀具數(shù)量—般為4把、6把、8把、10把12把、20把、24把，有些數(shù)控車床可以安裝更多的刀具。（二）零件的工藝分析 此刀架有兩組加工表面 以Ф32孔為中心的加工表面 這一組加工表面包括：銑削Ф32孔兩端面，側(cè)面需保留尺寸60mm，加工Ф32孔，以及孔中心距底面距離55177。由于零件年產(chǎn)量為4000件，藝術(shù)與大批量生產(chǎn)的水平，而且零件的輪廓尺寸不大，可采用鑄造成行。 粗基準(zhǔn)的選擇 對(duì)本零件來說，從Ф32孔的側(cè)面作為粗基準(zhǔn)，利用底面，是工件支承Ф32孔端面做主要定位。經(jīng)比較可見，先加工表面，然后再進(jìn)行加工孔，這樣的話位置精度輕易保證，并且定位及夾裝都比較方便。16，深10，銑4X216。（四）、機(jī)械加工余量、工序尺寸及毛坯尺寸的確定 此刀架的材料為45鋼，硬度為207～241HBW，生產(chǎn)類型為大批量生產(chǎn)，可采用鑄造毛坯。30mm擴(kuò)：絞：216。刀具：刀片材料為YT15，Kr=60186。=80186。但已知銑削寬度為64mm，故應(yīng)根據(jù)銑削寬度≤90mm，選擇d。當(dāng)使用YT15，（，XA5032型立式銑床說明書）時(shí)，fz=—但因?yàn)椴捎脤?duì)稱端銑，故取 fz= 4）選擇銑刀磨鈍標(biāo)準(zhǔn)以及刀具壽命，：由于銑刀直徑d。=100mm，z=5，vf=200mm/min，近似為： Pcc=根據(jù)XA5032型立銑說明書（），機(jī)床主軸允許的功率為： Pcm==≥ （可采用）即：ap=，vf=235mm/min，n=300r/min，vc=，fz=。為80mm，ae為60mm。 2）決定銑削深度ap，故選擇在一次走刀內(nèi)銑完， 則ap= 3）決定每齒進(jìn)給量fz，采用對(duì)稱端銑以提高進(jìn)給量。各修正系數(shù)為：Kmv=Kmo= Kgv=Kgn=Kgv=故 vc=vtKv=300=240m/min N=ntkgn=7001=560r/min vf=vftXKvt=1801=144mm/min根據(jù)XA5032型立銑說明書（）選擇： nc=600r/min ， vfc=150mm/min 因此實(shí)際切削速度vc和每齒進(jìn)給量fzc為： 校驗(yàn)機(jī)床功率，當(dāng)σb=5601000Mpa，ae≤72mm，ap≤，d。16，深10，加工孔4216。由《切削用量簡(jiǎn)明手冊(cè)》=，由《切削用量簡(jiǎn)明手冊(cè)》=。確定切削速度：由《切削用量簡(jiǎn)明手冊(cè)》=18m/min。m，Pe==，=8830N由于上面所算出的數(shù)據(jù)小于機(jī)床的各個(gè)相應(yīng)得參數(shù)，故機(jī)床符合要求。故鉆床主軸的轉(zhuǎn)速為：n=～由Z525的說明書的參數(shù)可取的n=392r/min。在工藝部分中，我們涉及到要確定各工序的安裝工位和該工序需要的工步，加工該工序的機(jī)車及機(jī)床的進(jìn)給量，切削深度，主軸轉(zhuǎn)切削速度，該工序的夾具，刀具及量具，還有走刀次數(shù)和走刀長(zhǎng)度，最后計(jì)算該工序的基本時(shí)間，輔助時(shí)間和工作地服務(wù)時(shí)間。在此，衷心感謝老師的幫助和指導(dǎo)。重慶機(jī)電職業(yè)技術(shù)學(xué)院課程設(shè)計(jì)任務(wù)書 機(jī)械設(shè)計(jì)與制造 專 業(yè) 2012 年級(jí) 5 班 xxxxxxx 一、設(shè)計(jì)題目設(shè)計(jì)下圖所示“刀架”零件（課程設(shè)計(jì)指導(dǎo)書圖520）的機(jī)械加工工藝規(guī)程（生產(chǎn)綱領(lǐng)：4000件）。、機(jī)械加工工序卡片。llYou cannot miss out the Autumn of Arxan. It is definitely the best with brightlycolored scenery full of emotions. s time for the wild fruits to ripe. The picturesque Arxan in Autumn is indeed a fairyland only exists in a dream that satisfies all your fantasies. If its Day on February 14, characterized by bouquets of roses, chocolates and romantic candlelight dinners, than they do about their homegrown day for lovers. Even Qixi is nowadays referred to as the Chinese Valentine39。is going on in Beijing, the exhibit aims to show the world this brilliant section of history. The Silk Road is a series of trade and cultural transmission routes that were central to cultural interaction through regions of the Asian continent. It connected the West and East by linking traders, merchants, pilgrims, monks, soldiers, nomads, and urban dwellers from China and India to the Mediterranean Sea during various periods of time. I met my dear hubby in 2009 the second year I was in my school and it was the first year when he came here. We became colleagues. And there was nothing special happening during that year. He was just a kind and humble brother graduated from the same college as me. But we did not know each other till he became my colleague and his office desk was just in front of me. There was only a glass between us. So actually we could see each other when we both look up. But it is not the main reason that really draws us close. How we bee close to each other was something seems quite natural. We went out to play badminton with other colleagues and we sometimes chatted for a while. He is a man of few words but somehow sometimes will say something really humorous. Then one day, to my great surprise, I found a pot of beautiful flower on my desk. It was just the flower I had talked about with my colleague the other day, and I thought it was her who put the flower there. But the truth is not. It was the humble guy sitting in front of me. He just simply said ,”well, I caught sight of this flower and thought that it’s beautiful and you may like it”. I wonder why I was moved because of these simple words and present. Maybe it is the sincerity and the true self that impress me. I thanked him and some colleagues walked past my desk would appreciate the beautiful flower and they noticed that something romance happened there. Then later on, there wer