【正文】 s Government on highway construction control area were delineated and issue a public notice, * * County People39。 life is a simple, calm and peaceful. Always not to choose their own path and regret, life is like a train, the scenery and then the United States will retreat, the passage of time and encounter will eventually drifting further and further away, before is always himself. 25, everyone has a weakness, weakness is true humanity. That has no weakness, a shallow person. That people think there is no weakness, mostly false. Life has shortings, there are shortings is the real life. That no 第 24 頁 共 116 頁 one regret, or childish or numbness or Self deception. It is in tolerance of weakness and so on to accept, people live happily. Hello, everyone! I am a party member. The title of my speech is: study and implement the party39。t wait for old just miss. Time to return, seize every moment, again painstakingly again tired also Those struggling to fly. 23, life could not Yimapingchuan, even flat pavement, inevitably there will be a few pieces of roadblocks. Some of the rocks around the past, while others have to move it out. Just move others put the stone is very easy, because the stone from the appearance we can discern。 to get, must work to。 how do you treat people, does not represent how others treat you, if cannot see through this point, only inviting worry. 18, time is like a sponge in the water, as long as you are willing to squeeze, the total water is still there. Every life, after the ups and downs The best test of live, to life, survival and continuation, do not stop the struggle in the joys and sorrows of life on the road, so that different soul to bear life beat, acceptance of 第 22 頁 共 116 頁 suffering. 19, indifferent to heart, calmly in table, elegant and fortable life, do not take what is so important. The pursuit will be disappointed。t envy him A sum of, don39。t envy who. Like a person is a kind of feeling, not like a person is true. The truth is easy to explain, I feel Is unspeakable. The best travel life is that you in a strange place found a long lost touched. 11, happy life not in the bustling in, and in the peace of mind。 you pain, no one can understand. Then you only tears to smile. 8, each people have youth, Each youth are a story, the life of the world never gets easier, I want what, wish the world all know, as has been the same。 and when we are in a negative state of mind, you will find many depressed things。t be narrowminded. Poke to care, is a kind of 第 19 頁 共 116 頁 openminded, a free and easy. 5, I am not afraid of others behind me a knife, I afraid to look back and see stab me, is my intention to treat people。 not unrewarding perfunctorily, but calm attitude of life of unrestrained selfconfidence. Plain living, there is no noise noisy, no earthly troubles, more did not fill in the discontent of desire, some just a calm, a calm. 3, memory of heart will not good things to erase the, life is a When no movie, pain is a beginning, the struggle is a kind of process, death is a kind of ending. Give up this giving up is the helpless, do not give up the abandoned, do not give up this giving up is ignorance, do not give up should not give up is persistent. 4, a thing figured is heaven, think impassability is hell. Since the living, to live better. Sometimes we because of too narrowminded, too care around the chores and penny wise and pound foolish, not worth the candle. Some things to attract trouble and worry, pletely depends on how we look at and deal with it. Don39。 to implement , do not want to, dare not, not with disciplinary ruler to supervision。 并根據(jù)小組的整體完成情況給予一定的加分。 （ 1）繪制零件圖，進(jìn)行零件工藝分析 12 天內(nèi)完成，（ 2）工藝路線的擬定（包括定位基準(zhǔn)的選擇、加工方法的確定等 24 天內(nèi)完成，（ 3）確定工序（確定加工余量，計(jì)算工序尺寸，每個(gè)人一個(gè)切削用量的計(jì)算） 23 天完成，填寫工藝卡、工序卡 ，繪制零件 毛坯 合 圖 （ 4） 確定夾具設(shè)計(jì)方案繪制草圖 24 天完成）（ 5）進(jìn)行定位誤差和夾緊力的計(jì)算，繪制裝配圖和零件圖 ，編寫設(shè)計(jì)說明書。要求字跡工整、清晰 ，內(nèi)容詳實(shí)，分析合理，計(jì)算 有 據(jù)，數(shù)據(jù)可靠。 對(duì)于確認(rèn)為抄襲的課程設(shè)計(jì) ， 一律為不及格，重修時(shí)最高分不高于 80 分。 七、 機(jī)械制造技術(shù)基礎(chǔ) 課程設(shè)計(jì)主要參考資料 第 8 頁 共 116 頁 楊叔子主編 《機(jī)械加工工藝手冊(cè)》 機(jī)械工業(yè)出版社 2020（電子版） 王光斗 《機(jī)床夾具設(shè)計(jì)手冊(cè)》 上?？茖W(xué)技 術(shù)出版社 2020（電子版） 崇凱 《 機(jī)械制造技術(shù)基礎(chǔ)課程設(shè)計(jì)指南 》 化學(xué)工業(yè)出版社 2020 第 9 頁 共 116 頁 附件 1 說明書目錄 目 錄 1．序言 2 . 計(jì)算生產(chǎn)綱領(lǐng)、確定生產(chǎn)類型 （確定生產(chǎn)類型） 3 零件的 工藝分析 （確定工藝特點(diǎn)） 4. 確定毛坯 確定毛坯種類 、毛坯尺寸 及 公差 定位基準(zhǔn)的選擇 制定工藝路線 表面加工方法選擇 工藝路線 的確定 (加工階段的劃分、加工順序的安排 熱處理工序、輔助工序的安排 ) 機(jī)械加工余量、工序尺寸及公差的確定 加工設(shè)備及工藝裝備的選擇 機(jī)床的選擇 夾具的選擇 刀具的選擇 量具的選擇 切削用量及時(shí)間定額的確定（本次設(shè)計(jì)只確定 1 道工序的切削用量和時(shí)間定額 ,可采用查表法或計(jì)算法確定。 裝配圖的標(biāo)題欄規(guī)格、形式如下： 9）夾具總圖上技術(shù)要求的編寫、零件明細(xì)表與一般機(jī)械裝配圖相同。 6）夾具的裝配工藝性和夾具零件（尤其是夾具體）的可加工性要好。 4）要保證夾具與機(jī)床的相對(duì)位置及刀具與夾具的相對(duì)位置的正確性。 2）注意投影的選擇。 （ 5）畫夾具裝配圖。 K的大小可由有關(guān)手冊(cè)查得，一 般 K=~。 （ 4）計(jì)算所需的夾緊力，設(shè)計(jì)夾緊機(jī)構(gòu)。在確定設(shè)計(jì)方案的基礎(chǔ)上，應(yīng)按照加工精度的高低，需要消除不定項(xiàng)的數(shù)目以及粗精加工的需要，按有關(guān)標(biāo)準(zhǔn)正確的選擇定位元件。設(shè)計(jì)方案的確定是一項(xiàng)十分重要的設(shè)計(jì)程序，方案的優(yōu)劣往往決定于夾 具設(shè)計(jì)的成功與失敗，因此必須充分地進(jìn)行研究 和討論，以確定最佳方案，而不應(yīng)急于繪圖，草率從事。 （四）工藝裝備設(shè)計(jì) 要求學(xué)生為 給定 加工 零件 設(shè)計(jì) 所必須的 夾具 夾具 1套。見圖中的加工表面用粗實(shí)線表 示。 （ 7）填寫機(jī)械加工工藝卡片及工序卡片。在機(jī)床、刀具，加工余量等已確定的基礎(chǔ)上，要求學(xué)生用公式計(jì)算一道工序的切削用量， （每個(gè)學(xué)生各計(jì)算一道工序的切削用量，不能重復(fù)） 其余各工序的切削用量則可由手冊(cè)查得。其工序間尺寸公差，按經(jīng)濟(jì)精度確定。機(jī)床 設(shè)備的選用應(yīng)當(dāng)既要保證加工質(zhì)量，又要經(jīng)濟(jì)合理。 （ 2）選擇定位基準(zhǔn)，進(jìn)行必要的工序尺寸算。正確的選擇毛坯的制造方式，可以使得整個(gè)工藝過程經(jīng)濟(jì)合理，故應(yīng)慎重進(jìn)行，在通常情況下，應(yīng)主要以 生產(chǎn)性質(zhì)來決定。 四、 設(shè)計(jì)的要求 生產(chǎn)綱領(lǐng)為中批或大批生產(chǎn)。學(xué)生通過設(shè)計(jì)夾具的訓(xùn)練，應(yīng)當(dāng)獲得根據(jù)被加工零件的加工要求，設(shè)計(jì)出高效、省力、既經(jīng)濟(jì)合理又能保證加工質(zhì)量的夾具的能力。 三、 設(shè)計(jì)的目的 機(jī)械制造 基礎(chǔ) 課程設(shè)計(jì)是在學(xué)完了機(jī)械制造技術(shù)基礎(chǔ) 之后進(jìn)行的下一個(gè)教學(xué)環(huán)節(jié)。它一方面要求學(xué)生通過設(shè)計(jì)獲得綜合運(yùn)用所學(xué)過的課程進(jìn)行工藝和結(jié)構(gòu)設(shè)計(jì)的基本能力，另外，也為以后作好畢業(yè)設(shè)計(jì)進(jìn)行一次綜合訓(xùn)練和準(zhǔn)備。 ? 學(xué)會(huì)使用手冊(cè)及圖表資料。 設(shè)計(jì)的要求包括以下幾部分： 零件圖 一張 毛坯 圖 一張 機(jī)械加工工藝卡片 、 工序卡片 一套 第 4 頁 共 116 頁 所有加工工序工序圖 一 套 工藝裝備設(shè)計(jì) 一套 工藝裝備主要零件圖 一張 課程設(shè)計(jì)說明書 一份 按照教學(xué)計(jì)劃規(guī)定，機(jī)械制造 基礎(chǔ) 課程設(shè)計(jì)總學(xué)時(shí)數(shù) 為 ，其進(jìn)度和時(shí)間大致分配如下： 熟悉零件，畫零件圖 約占 8% 選擇加工方案，確定工藝路線和工藝尺寸，填寫工藝卡片 、 工序卡片 約占 25% 工藝裝備設(shè)計(jì)（畫總裝圖及主要零部件圖） 約占 45% 編寫設(shè)計(jì)說明書 約占 14% 準(zhǔn)備及答辯 約占 8% 五、 設(shè)計(jì)的內(nèi)容與步驟