【正文】 廣泛。 一般盤類零件由外圓、錐面、圓弧 槽、孔、螺紋等構(gòu)成，所以刀具也從基本常見的外圓車刀、端面車刀、縱向槽刀、橫向槽刀、鏜孔車刀、螺紋車刀以及特殊形狀的成型車刀中選擇。盤類零件的結(jié)構(gòu)特點(diǎn)是最大外徑較大，長度較短，被加工工件各部分直徑落差較大。 對于盤類零件加工時(shí)，由于它在徑向加工時(shí)受機(jī)床夾緊力的限制，切削深度不宜過大。為了使被加工零件的表面粗糙度能夠保持一致，在轉(zhuǎn)速的選擇上可以采用數(shù)控系統(tǒng)所具有的恒線速指令。 盤類零件在數(shù)控加工時(shí)比普通機(jī)床加工時(shí)會產(chǎn)生更多的熱量，因?yàn)閿?shù)控加工相對普通機(jī)床加工的切削速度要快，切削區(qū)的溫度較高，切 削車刀的磨損也比較嚴(yán)重。 根據(jù)工件毛坯情況及圖樣上的技術(shù)要求，考慮工件路線首先要保證加工精度的前提，符合加工 工藝的原則，以最短的加工路徑完成零件的加工，該零件可先粗加工車削工藝臺，即粗車外圓、車端面、鉆孔，調(diào)頭車端面并作為基準(zhǔn)，車削外圓 Φ 150 ㎜及倒角至尺寸，鏜錐孔及鏜孔 ?40㎜至精度要求。 加工工件的刀具和工藝卡 畢 業(yè) 論 文 第 21 頁 共 25 頁 零件圖號 31 數(shù)控車床加工工藝卡 機(jī)床型號 CKA6150 零件名稱 盤 機(jī)床編號 刀具表 量具表 刀具號 刀補(bǔ)號 刀具名稱 刀具參數(shù) 量具名稱 規(guī)格（ mm/mm） T01 01 93186。外圓精車刀 D型刀片 千分尺 150～ 175/ 50～ 75/ T04 04 91186。 車削工件工藝臺和鉆孔的程序： 00001 N1 G99 M03 S800 T0101 G00 G00 M08 畢 業(yè) 論 文 第 22 頁 共 25 頁 G90 G94 G00 M05 M00 N2 G99 M03 S300 T0808 G00 G00 G01 G00 M09 M05 M30 車削工件外圓、端面、鏜孔的程序： O0002 N1 G50 S1500 G99 G96 S500 M03 T0101 G00 G00 M08 G94 G90 G00 M09 M05 M00 N2 G99 G97 S1000 M03 T0202 G00 畢 業(yè) 論 文 第 23 頁 共 25 頁 M08 G00 G90 G00 Z1 G01 G00 M09 M05 M00 N3 G99 M03 S1000 T0404 G00 G00 X33 M08 G71 G71 P10 Q20 N10 G00 G41 G01 N20 G00 G40 G00 Z250 M09 M05 M00 N4 G99 M03 S1200 T0404 G00 M08 G00 G70 P10 Q20 G00 M09 M05 畢 業(yè) 論 文 第 24 頁 共 25 頁 M30 精加工外輪廓的程序 O0003 N1 G99 M03 S1000 T0101 G00 G00 M08 G94 Z0 G71 G71 P10 Q20 N10 G00 G42 G01 G01 Z2 G03 G02 G01 G01 N20 G00 G40 G00 M09 M05 M00 N2 G99 M03 S1200 T0202 G00 G00 M08 G70 P10 Q20 G00 M09 M05 M30 畢 業(yè) 論 文 第 25 頁 共 25 頁 結(jié) 束 語 數(shù)控實(shí)訓(xùn)過程可歸納為以下幾步：零件圖分析 → 擬定工藝方案 → 編程并輸入 \→ 對刀 → 仿真 → 加工零件。而應(yīng)選定幾個(gè)有代表性表面的工件來練習(xí)，亦可在此基礎(chǔ)上不斷變換練習(xí)。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 Fur ther 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 charge you more than 35% of your pensation if you win the case. You are 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 e mail, click on nearest CAB. For more information about making a claim to an employment tribunal, see Employment tribunals. The (lack of) air up there Watch m Cay man Islandsbased Webb, the head of Fifa39。s 150th anniversary celebrations and will attend City39。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 governing body, has also ordered an immediate investigation into the referee39。s plaint. In a statement the Russian side added: We found no racist insults from fans of CSKA. Age has reached the end of the beginning of a word. May be guilty in his seems to passing a lot of different life became the appearance of the same day?；蛟S是愧疚于自己似乎把轉(zhuǎn)瞬即逝的很多個(gè)不同的日子過成了同一天的樣 子；或許是追溯過去，對自己那些近乎偏執(zhí)的怪異信念的醒悟，這些天以來，思緒一直很凌亂， 在腦海中不斷糾纏。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。 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。 Then in high school, think don39。t remember his appearance. Baumgartner the disappointing news: Mission aborted. r plays an important role in this mission. Starting at the ground, conditions have to be very calm winds less than 2 mph, with no precipitation or humidity and limited cloud cover. The balloon, with capsule attached, will move through the lower level of the atmosphere (the troposphere) where our daytoday weather lives. It will climb higher than the tip of Mount Everest ( miles/ kilometers), drifting even higher than the cruising altitude of mercial airliners ( miles/ kilometers) and into the stratosphere . As he crosses the boundary layer (called the tropopause),e can expect a lot of turbulence. We often close ourselves off when traumatic events happen in our lives。我們假裝一切仿佛都不曾發(fā)生，以此試圖忘卻傷痛，可就算隱藏得再好，最終也還是騙不了自己。下面六個(gè)方法有助于你更完滿透徹地敞開心扉。如果我們一味逃避生活中的悲傷，悲傷只會變得更強(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 。 5.