【正文】 床功率允許的條件下選擇一個(gè)合理的切削速度。 薄壁零件的裝夾：薄壁零件容易變形，普通三爪卡盤受力點(diǎn)少，采用開縫套筒或扇形軟卡爪，可使工件均勻受力，減小變形。 （ 2）主軸轉(zhuǎn)速： 車直線和圓弧輪廓時(shí)的主軸轉(zhuǎn)速。）→切削螺紋實(shí)際外徑Φ → 切削Φ 26→切削Φ 36→切削圓弧部分→切削Φ 34→切削錐度部分→切削Φ 56,最后切削螺紋。外螺紋車刀，刀尖角取為 59176。 （ 2）確定換刀點(diǎn)：為使其各車刀在換刀過程中不致碰撞到尾座上的頂尖，故確定換刀點(diǎn)距離車床主軸軸線 60mm，即在正 X 方向距離對(duì)刀點(diǎn) 30mm，距離坯件右端端面0 mm，即在 Z 方向與對(duì)刀點(diǎn)一致。 參考文獻(xiàn) 書籍：（ 1） 張超英等 ,數(shù)控機(jī)床加工工藝、編程及操作實(shí)訓(xùn) ,北京； 高等教育出版社， 2021， 9 （ 2）王洪主 編，數(shù)控加工程序編制，北京；機(jī)械工業(yè)出版社， （ 3） 古文生 主編，數(shù)控機(jī)床及應(yīng)用，北京； 電子工業(yè) 出版社， （ 4）董兆偉主編，數(shù)控機(jī)床編程技術(shù)，北京； 機(jī)械工業(yè)出版社， ag an employment tribunal clai Emloyment tribunals sort out disagreements between employers and employees. You may need to make a claim to an employment tribunal if: you don39。s about how he felt and I would like to speak to him first to find out what his experience was. Uefa has opened disciplinary proceedings against CSKA for the racist behaviour of their fans during City39。二十年的人生軌跡深深淺淺，突然就感覺到有些事情，非做不可了。 A person39。 From the corner at the beginning of deep friendship。下面六個(gè)方法有助于你更完滿透徹地敞開心扉。 3. Ask your heart what it wants 傾聽內(nèi)心 We’re often confused at the next step to take, making pros and cons lists until our eyes bleed and our brains are sore. Instead of always taking this approach, what if we engaged a new part of ourselves that isn’t usually involved in the decision making process?我們常對(duì)未來猶疑不定，反復(fù)考慮利弊直到身心俱疲。 From: The supersonic descent could happen as early as Sunda. The weatheThe balloon will slowly drift to the edge of space at 120,000 feet (Then, I would assume, he will slowly step out onto something resembling an Olympic diving platform. Below, the Earth bees the concrete bottom of a swimming pool that he wants to land on, but not too hard. Still, he39。如果我們一味逃避生活中的悲傷，悲傷只會(huì)變得更強(qiáng)烈更真實(shí) —— 悲傷原本只是稍縱即逝的情緒，我們卻固執(zhí)地耿耿于懷 By utilizing our breath we soften our experiences. If we dam them up, our lives will stagnate, but when we keep them flowing, we allow more newness and greater experiences to 。t start planning... Those years, those days of do, finally, like youth, will end in our life. 此刻，天空是陰暗的，空氣里有著剛下過雨之后的清新因子。想要的，不想要的，界限明確，好像沒有什么可以撼動(dòng)自己。 Junior high school, thought to have a crush on just means that the real growth, but over the past three years later, his writing of alumni in peace, suddenly found that isn39。s governing body, has also ordered an immediate investigation into the referee39。t appealed against the disciplinary action your employer has taken against you. However, if you win your case, the tribunal may reduce any pensation awarded to you as a result of your failure to appeal. Remember that in most cases you must make an application to an employment tribunal within three months of the date when the event you are plaining about happened. If your application is received after this time limit, the tribunal will not usually accept i. If you are worried about how the time limits apply to you If you are being represented by a solicitor at the tribunal, they may ask you to sign an agreement where you pay their fee out of your pensation if you win the case. This is known as a damagesbased agreement. In England and Wales, your solicitor can39。 數(shù)控技術(shù)是未來制造業(yè)不可缺少的一部分，將在經(jīng)濟(jì)發(fā)展與社會(huì)進(jìn)步的今天發(fā)揮重要作用， 作為跨世紀(jì)的新一代，我們有理由相信，我國(guó)機(jī)械制造業(yè)會(huì)更加輝煌 ,祖國(guó)的明天也會(huì)更加美好 。 對(duì)刀 （ 1）將粗車用 90176。 用 2 號(hào)刀車螺紋。編程中還可以對(duì)直線、圓弧采用不同的主軸轉(zhuǎn)速。 七、零件加工編程實(shí)例 （一）零件的工藝分析 圖 2 零 件 分析零件圖樣： 如圖 2 所示 ,該零件包括有圓柱、圓錐、順圓弧、逆圓弧及雙線螺紋等表面；其多個(gè)直徑尺寸有較嚴(yán)的尺寸公差和表面粗糙度值等要求；球面 SΦ 50mm 的尺寸公差還兼有控制該球面形狀（線輪廓）誤差的作用。當(dāng)零件精度要求較高時(shí)，通常留 ~ mm （直徑值）的精車余量。大后角用于：切 削軟材料；切削易加工硬化的材料。凸三角形、四方形和 80176。 耐熱性 數(shù)控刀具材料應(yīng)在高溫下保持較高的硬 度、耐磨性、強(qiáng)度和韌性，并有良好的抗擴(kuò)散、抗氧化能力。切削刀具從低值易耗品過渡到全面進(jìn)入“三高一專（高效率、高精度、高可靠性和專用化）”的數(shù)控刀具時(shí)代，實(shí)現(xiàn)了向高科技產(chǎn)品的飛躍。 數(shù)學(xué)處理 編程前，根據(jù)零件的幾何特征，先建立一個(gè)工件坐標(biāo)系，根據(jù)零件圖紙的要求，制定加工路線，在建立的工件坐標(biāo)系上，首先計(jì)算出刀具的運(yùn)動(dòng)軌跡。通常在一次安裝中，不允 許將零件某一部分表面加工完畢后，再加工零件的其他表面。 （三） 工序與工布的劃分 工序的劃分 ： 在數(shù)控機(jī)床上加工零件，工序可以比較集中，在一次裝夾中盡可能完成大部分或全部工序。 零件圖形的數(shù)學(xué)處理及編程尺寸設(shè)定值的確定。 驅(qū)動(dòng)裝置，他是數(shù)控機(jī)床執(zhí)行機(jī)構(gòu)的驅(qū)動(dòng)部件，包括主軸驅(qū)動(dòng)單元、進(jìn)給單元 、主軸電機(jī)及進(jìn)給電機(jī)等。 主 要內(nèi)容有關(guān)于數(shù)控車床的編程方法、編程的注意事項(xiàng)、加工工藝分析、刀具的選用、刀位軌跡計(jì)算 二、數(shù)控概述 （一）數(shù)控機(jī)床簡(jiǎn)介 數(shù)控機(jī)床是數(shù)字控制機(jī)床（ Computer n