【正文】 含義 抬刀 下刀 編程原點(diǎn) 起刀點(diǎn) 走刀方向 走刀線(xiàn)相交 爬斜坡 鉸孔 行切 10 外輪廓走刀路徑 數(shù)控加工走刀路線(xiàn)圖 零件圖號(hào) NC01 工序號(hào) 工步號(hào) 程序號(hào) 0100 機(jī)床型號(hào) YHM1100(A) 程序段號(hào) 加工內(nèi)容 銑輪廓周邊 共2頁(yè) 第 2 頁(yè) 編程 校對(duì) 審批 符號(hào) 含義 抬刀 下刀 編程原點(diǎn) 起刀點(diǎn) 走刀方向 走刀線(xiàn)相交 爬斜坡 鉸孔 行切 8 程序編制 從零件圖樣到編制零件加工程序和制作控制介質(zhì)的全部過(guò)程稱(chēng)為程序編制，程序編制在工業(yè)生產(chǎn)中是十分重要的，所以要編制好零件的加工程序，此零件采用銑床加工，要注意程序編制時(shí)，要符合數(shù)控銑床的程序編制特點(diǎn)，同時(shí)要注意一些指令的使用，和數(shù)控車(chē)床是不一樣的。s misery, the cow told him to turn its hide into a pair of shoes after it died. The magic shoes whisked Niulang, who carried his two children in baskets strung from a shoulder pole, off on a chase after the empress. The pursuit enraged the empress, who took her hairpin and slashed it across the sky creating the Milky Way which separated husband from wife. But all was not lost as magpies, moved by their love and devotion, formed a bridge across the Milky Way to reunite the family. Even the Jade Emperor was touched, and allowed Niulang and Zhinu to meet once a year on the seventh night of the seventh month. This is how Qixi came to be. The festival can be traced back to the Han Dynasty (206 BCAD 220). Traditionally, people would look up at the sky and find a bright star in the constellation Aquila as well as the star Vega, which are identified as Niulang and Zhinu. The two stars shine on opposite sides of the Milky Way. Customs In bygone days, Qixi was not only a special day for lovers, but also for girls. It is also known as the Begging for Skills Festival or Daughters39。s 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。本設(shè)計(jì)采用常規(guī)的設(shè)計(jì)方法、選用普通的材料以及應(yīng)用大量標(biāo)準(zhǔn)件（其種類(lèi)的比例達(dá)到 41/(41+24)=%），具有很好的經(jīng)濟(jì)性，并且有較高的精度。 主軸轉(zhuǎn)速 主軸轉(zhuǎn)速的計(jì)算公式如下： V=Dn/1000 式中 V 主軸轉(zhuǎn)速 D 刀具的直徑 N 切削速度 切削速度在機(jī)械手冊(cè)上可以查到，主軸轉(zhuǎn)速如下： 粗銑輪廓時(shí)，主軸轉(zhuǎn)速為 800，精銑的時(shí)候?yàn)?1200。 切削用量的確定 切削用量一般包括背吃刀量，進(jìn)給速度，主軸轉(zhuǎn)速等，具體安排見(jiàn)下面的分析。 所以根據(jù)以上的介紹可以知道，該零件選擇精密虎鉗進(jìn)行夾緊以及定位。如將 卡爪調(diào)轉(zhuǎn) 180176。 4 機(jī)床的潤(rùn)滑系統(tǒng)均采用定時(shí)，定量自動(dòng)集中供油潤(rùn)滑系統(tǒng)，可確保每個(gè)潤(rùn)滑部位都得到充分潤(rùn)滑 夾具的選擇 三爪卡盤(pán) 根據(jù)零件的形狀及加工方法可知 ，零件不能用三爪卡盤(pán)來(lái)裝夾，因?yàn)槿ūP(pán)的特點(diǎn)是：三爪卡盤(pán)是靠其法蘭盤(pán)上的螺紋直接旋裝在車(chē)床主軸上。裝夾第二次，完成下表面的加工，所以根據(jù)工序集中的原則，按照裝夾次數(shù)劃分為兩道工序 ，減少了設(shè)備的數(shù)量，減少了操作工人及生產(chǎn)面積；減少了工序數(shù)目，簡(jiǎn)化了生產(chǎn)計(jì)劃工作，縮短了生產(chǎn)周期。 鉸孔 鉸孔是用鉸刀從工件壁上切除微量金屬層，以提高孔的尺寸精度和表面質(zhì)量的加工方法。 2 毛坯的選擇 工藝設(shè)計(jì)時(shí)，毛坯的選擇是指確定毛坯的種類(lèi)、制造方法以及余量確定后的毛坯尺寸。復(fù)雜零件的工藝設(shè)計(jì)及程序的編制已是時(shí)代的必須，它的發(fā)展將推動(dòng)我國(guó)工業(yè)的發(fā)展。需要熟練的技術(shù)工人。 凸臺(tái)加工方案 方案 Ⅰ 粗車(chē) — 半精車(chē) 方案 Ⅱ 粗車(chē) — 半精車(chē) — 精車(chē) 根據(jù)零件的精度要求，凸臺(tái)達(dá)到 78級(jí)精度，要進(jìn)行精加工。 根據(jù)基準(zhǔn)統(tǒng)一原則， 以平面 B 為基準(zhǔn)加工孔等， 同時(shí) 保證 與平面 A 的 對(duì)稱(chēng)度要求，同時(shí)保證尺寸的要求。 4 工藝參數(shù)、刀夾具與機(jī)床的選擇 機(jī)床的選擇 根據(jù)零件的形狀與結(jié)構(gòu)選擇 YHM1100(A) 數(shù)控銑床 ，它 適用于鉆、銑、鏜等工序及復(fù)雜的二、三維凸凹型腔和表面的自動(dòng)加工，配合多軸 NC 回轉(zhuǎn)工作臺(tái)可對(duì)工件實(shí)現(xiàn)多面體及特殊曲面和復(fù)雜型腔，孔位的殼體和模具加工。三爪卡盤(pán)裝夾方便能自動(dòng)定心，但其定心準(zhǔn)確度不高，約為 ～ 。同時(shí)，四爪卡盤(pán)比三爪卡盤(pán)的夾緊力大，所以常用來(lái)安裝較大的圓形工件。 都采用環(huán)行加工的方法，一層一層的銑削，可以提高零件的精度，也為最后的精加工做好準(zhǔn)備。 所以確定加工余量為：凸臺(tái) 進(jìn)行多次加工， 粗加工余量為 2 mm。 6 進(jìn)給量 進(jìn)給量的計(jì)算公式如下： f=nzfz 式中 ： f 進(jìn)給量 n 切削速度 fz 每齒進(jìn)給量 具體看工序表。 ll wait in the line for one hour to get a ticket, and another two hours at the site, to only see a tiny bit of the place due to the crowds. Last year, 428 million tourists traveled in China over the weeklong holiday in October. Traveling during this period is a matter that needs thorough preparation. If you are short on time to plan the uping Golden Week it may not be a bad idea to avoid some of the most crowded places for now. There is always a place so fascinating that everyone yearns for. Arxan is a place like this. The beauty of Arxan is everlasting regardless of the changing of four seasons. Bestowed by nature, its spectacular seasonal landscape and mountains are just beyond word. Arxan is a crucial destination for the remended travelling route, China Inner Mongolia Arxan — Hailar — Manzhouli. It is also the joint of the four prairies across the SinoMongolian border, where people gravitate towards the exotic atmosphere mixed with Chinese, Russian, and Mongolia elements. As a historic site for the Yitian Battle, Arxan still embodies the spirit of Genghis Khan. Walking into Arxan, you will be amazed by a kaleidoscope of geous colors all the year round the Spring azaleas blooming red in the snow, the Summer sea wavering blue in the breeze, the Autumn leaves painted in yellow covering volcanic traces, and the Winter woods shining white on the vast alpine snowscape. Hinggan League Arxan city is situated in the far eastern area of Inner Mongolia Autonomous Region. Its full name Haren Arxan means hot holy water in the Mongolian language. Arxan is a tourism city in the northern frontier with a blend of large forest, grand prairies, vast snowfield, heaven lake cluster, thermium, as well as volcanic cluster. It is a rare and unique ecotourism base filled with healthy sunshine, clean air and unspoiled green. Nestled close to the country3