【文章內容簡介】 號刀精車全部外形。 （四）選擇刀具及對刀 粗、精車用刀 具： （ 1）硬質合金 90176。外圓車刀，副偏角以為 60176。，斷屑性能應較好。 （ 2） 硬質合金 60176。外螺紋車刀，刀尖角取為 59176。 30′，刀尖圓弧半徑取為 。 對刀 （ 1）將粗車用 90176。外圓車刀安裝在絕對刀號自動轉位刀架的 1 號刀位上，并定為1 號刀。 （ 2）將精車外形（含外螺紋）用 60176。外螺紋車刀安裝在絕對刀號自動轉位刀架的2 號刀位上，并定為 2 號刀。 （ 3）在對刀過程中，同時測定出 2 號刀相對于 1 號刀的刀位偏差。 （五）確定工件坐標系、對刀點和換刀點 加工坐標系如圖 3 所示： O 為坐標原 圖 3 坐標點示意圖 確定對刀點及換刀點位置： （ 1）確定對刀點：確定對刀點距離車床主軸軸線 30 mm，距離坯件右端端面 140 mm；其對刀點在正 X 和正 Z 方向并處于消除機械間隙狀態(tài)。 （ 2）確定換刀點：為使其各車刀在換刀過程中不致碰撞到尾座上的頂尖，故確定換刀點距離車床主軸軸線 60mm，即在正 X 方向距離對刀 點 30mm，距離坯件右端端面0 mm，即在 Z 方向與對刀點一致。 八、結論 通過這次 畢業(yè)設計，使我對大學三年所學的知識有了一次全面的綜合運用，例如：數(shù)控編程、工藝分析，這些對今后畢業(yè) 工作 發(fā)展 都有很大的幫助。 數(shù)控技術是未來制造業(yè)不可缺少的一部分，將在經(jīng)濟發(fā)展與社會進步的今天發(fā)揮重要作用， 作為跨世紀的新一代，我們有理由相信，我國機械制造業(yè)會更加輝煌 ,祖國的明天也會更加美好 。 九、謝辭 通過此次的論文，我學到了很多知識，跨越了傳統(tǒng)方式下的教與學的體制束縛，在論文的寫作過程中，通過查資料和 搜集有關的文獻，培養(yǎng)了自學能力和動手能力。并且由原先的被動的接受知識轉換為主動的尋求知識，這可以說是學習方法上的一個很大的突破。在以往的傳統(tǒng)的學習模式下，我們可能會記住很多的書本知識，但是通過畢業(yè)論文，我們學會了如何將學到的知識轉化為自己的東西，學會了怎么更好的處理知識和實踐相結合的問題。 此次論文的寫作過程，我收獲了很多，即為大學四年劃上了一個完美 的句號，也為將來的人生之路做好了一個很好的鋪墊。 再次感謝我的大學和所有幫助過我并給我鼓勵的老師，同學和朋友，謝謝你們。 參考文獻 書籍：（ 1） 張超英等 ,數(shù)控機床加工工藝、編程及操作實訓 ,北京； 高等教育出版社， 2022， 9 （ 2）王洪主編，數(shù)控加工程序編制，北京；機 械工業(yè)出版社， （ 3） 古文生 主編，數(shù)控機床及應用，北京； 電子工業(yè) 出版社， （ 4）董兆偉主編，數(shù)控機床編程技術，北京； 機械工業(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。t agree with the disciplinary action your employer has taken against you your employer dismisses you and you think that you have been dismissed unfairly. For more informu, take advice from one of the anisations listed under Further help. Employment tribunals are less formal than some other courts, but it is still a legal process and you will need to give evidence under an oath or affirmation. Most people find making a claim to an employment tribunal challenging. If you are thinking about making a claim to an employment tribunal, you should get help straight away from one of the anisations listed under Further help. ation about dismissal and unfair dismissal, see Dismissal. You can make a claim to an employment tribunal, even if you haven39。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。t charge you more than 35% of your pensation if you win the case. you39。re clear about the terms of the agreement. It might be best to get advice from an experienced adviser, for example, at a Citizens Advice Bureau. To find your nearest CAB, including those that give advice by , click on nearest CAB. For more information about making a claim to an employment tribunal, see Employment tribunals. The (lack of) air up there Cay man Islandsbased Webb, the head of Watch m Fifa39。s antiracism taskforce, is in London for the Football Association39。s 150th anniversary celebrations and will attend City39。s Premier League match at Chelsea on Sunday. I am going to be at the match tomorrow and I have asked to meet Ya ya Toure, he told BBC Sport. For me it39。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。s 21 win. Michel Platini, p