【正文】 , N 6: B 0 B 1450 B 1075 GY SR1 。 , N 7: B 3744 B 13973 B 13973 GY L4 。 , N 8: B 2255 B 2254 B 2255 GX L4 。 , N 9: B 5543 B 0 B 5543 GX L1 。 , N 10: B 0 B 100 B 100 GY L4 。 , N 11: DD 第 35 頁(yè) 共 39 頁(yè) 四、設(shè)計(jì)總結(jié) 、設(shè)計(jì)心得 本次設(shè)計(jì)是在李必文老師的悉心指導(dǎo)和幫助下完成的。他淵博的知識(shí)、勤奮的工作作風(fēng)、務(wù)實(shí)的學(xué)習(xí)和工作態(tài)度、積極進(jìn)取的勇氣和魄力、以及對(duì)學(xué)生從嚴(yán)要求的治學(xué)態(tài)度都深深感染了我，值得我終身學(xué)習(xí)。他無(wú)私的奉獻(xiàn)精神是我畢生學(xué)習(xí)和追求的目標(biāo)。在今后的學(xué)習(xí)和生活之中，老師的教海必將激勵(lì)我不斷奮發(fā)向上同時(shí)也要感謝與我相關(guān)的課題組的同學(xué)，他們?cè)谠O(shè)計(jì)中給了我很大的幫助，和他們的一討論時(shí)常使我的思路豁然開朗，他們給了 我很多很好的設(shè)計(jì)性建議，使我的設(shè)計(jì)加快了進(jìn)程。在此向所有給予我?guī)椭椭С值睦蠋熀屯瑢W(xué)們表示深深的謝意。 通過(guò)這一學(xué)期的學(xué)習(xí)和對(duì)有關(guān)資料的喪閱，我運(yùn)用所學(xué)的專業(yè)知識(shí)和從與專業(yè)相關(guān)聯(lián)的課程為出發(fā)點(diǎn)，設(shè)計(jì)了刀其零件的工藝、編制了刀具零件的加 I_程序，井復(fù)習(xí)了所學(xué)軟件 AUTOCAD、PROIE 的運(yùn)用，同時(shí)學(xué)習(xí)了其他一些相關(guān)軟件的應(yīng)用。在設(shè)計(jì)思想中盡可能體現(xiàn)了我所學(xué)的、掌握和了解的知識(shí)。其次我從這次課程設(shè)計(jì)中獲益匪淺，在以后的工作中，肯定會(huì)遇到許多困難，但回想起這設(shè)計(jì)經(jīng)歷的時(shí)候，我就萌發(fā)出那種和困難做斗爭(zhēng)的勇氣。 當(dāng)然由于設(shè)計(jì)一經(jīng)驗(yàn)的不足，在設(shè)計(jì)過(guò)程中難免有不足和缺點(diǎn)，但是我覺(jué)得得到教訓(xùn)也算是一種收獲吧。 第 36 頁(yè) 共 39 頁(yè) 、未來(lái)展望 中國(guó)第一把插齒刀是 20 世紀(jì) 60 年代出現(xiàn)的，這說(shuō)明了在技術(shù)發(fā)展中，我們還遠(yuǎn)比不上發(fā)達(dá)國(guó)家。 目前國(guó)內(nèi)刀具技術(shù)的整體發(fā)展水平與歐洲國(guó)家仍有較大差距。但近年來(lái)國(guó)內(nèi)工具廠通過(guò)不斷進(jìn)行技術(shù)改造，刀具設(shè)計(jì)制造水平已有長(zhǎng)足進(jìn)步，某些技術(shù)領(lǐng)域和產(chǎn)品品種已接近或達(dá)到國(guó)外先進(jìn)水平，如汽車變速箱齒輪滾刀、發(fā)動(dòng)機(jī)連桿拉刀、壓縮機(jī)專用拉刀、復(fù)合齒形漸開線花鍵拉刀、剃齒刀等刀具品種已達(dá)到較高質(zhì)量水平，具有了一定的市場(chǎng) 競(jìng)爭(zhēng)能力。中國(guó)加入WTO 后，國(guó)內(nèi)工具行業(yè)機(jī)遇與挑戰(zhàn)并存，為了抓住機(jī)遇，迎接挑戰(zhàn)，國(guó)內(nèi)工具制造廠必須進(jìn)一步加大技術(shù)改造力度，盡快提高自身發(fā)展水平，縮小與發(fā)達(dá)國(guó)家的差距，通過(guò)市場(chǎng)競(jìng)爭(zhēng)求生存、圖發(fā)展 。作為當(dāng)代機(jī)械設(shè)計(jì)制造及其自動(dòng)化專業(yè)的大學(xué)生，更應(yīng)該學(xué)好專業(yè)知識(shí)，為以后走向工作崗位更好的為我國(guó)的制造技術(shù)的發(fā)展貢獻(xiàn)力量。 設(shè)計(jì)此齒輪滾刀重點(diǎn)在于參數(shù)計(jì)算和工藝設(shè)計(jì)。參數(shù)計(jì)算過(guò)程涉及到變位系數(shù)的選取以及齒形的修正。工藝設(shè)計(jì)過(guò)程中除了要了解加工程和原理之外，還要了解加工的經(jīng)濟(jì)性，所以工藝設(shè)時(shí)要充分的考慮到現(xiàn)場(chǎng)加工的 條件，以及工人的加工水平。另外還要了解加工機(jī)床的性能。綜合、全面的做好一個(gè)設(shè)計(jì)是需要多方面的知識(shí)的，對(duì)于我現(xiàn)在這種水平來(lái)說(shuō)，還有很多方面的因素沒(méi)有考慮周全，也可以說(shuō)經(jīng)驗(yàn)不足。所以我很盡力的、很用心的去完成這個(gè)設(shè)計(jì)，盡量使自己能從中多學(xué)到知識(shí)和經(jīng)驗(yàn)。 第 37 頁(yè) 共 39 頁(yè) 參考文獻(xiàn) [1] 袁哲俊、劉華明主編 . 刀具設(shè)計(jì)手冊(cè) . 北京：機(jī)械工業(yè)出版社， 1996 [2] 樂(lè)兌謙主編 . 金屬切削刀具 . 北京：機(jī)械工業(yè)出版社， 1988 [3] 袁哲俊、劉華明、唐宜勝合編 . 齒輪刀具設(shè)計(jì) . 北京：新時(shí)代出版社， 1983 [4] 天津齒輪機(jī)床研究所編 . 齒輪工手冊(cè) . 天津：天津人民出版社， 1976 [5] 王勤思、李必文發(fā)表于制造技術(shù)與機(jī)床 .基于 SolidWorks 的鏈輪滾刀精鏟刀的設(shè)計(jì)與加工 .2022 [6] 李必文、廖衛(wèi)獻(xiàn)、周榮安、王湘江發(fā)表 .線切割加工錐度時(shí)刀位點(diǎn)的精確控制 [7] 蔣冬梅發(fā)表 .三種馬格型單頭斜齒梳齒刀的設(shè)計(jì)制造 [8] 傅水根主編 . 機(jī)械制造工藝基礎(chǔ) . 北京：清華出版社， 1998(2022 重印 ) [9] 大連理工大學(xué)工程圖學(xué)教研室主編 . 機(jī)械制圖（第 6 版） . 北京：高等教育出版社， 2022 [10] 于永泗、齊民主編 .機(jī)械工程材料 (第 8 版 ).大連：大連理工大學(xué)出版社 .2022 [11] 四川省機(jī)械工業(yè)局 .復(fù)雜刀具設(shè)計(jì)手冊(cè) .北京：機(jī)械工業(yè)出版社 .1985 [12] 孫桓、陳作模主編 . 機(jī)械原理 (第 7 版 ) . 北京：高等教育出版社， 2022 [13] 王先逵主編 . 機(jī)械制造工藝學(xué) . 北京：機(jī)械工業(yè)出版社， 1995(2022 重印 ) A boxer that only has front legs refuses to let his disability hold him back as he charges across a beach with his fourlegged ，他同其他四條腿的伙伴們一同在海灘上盡情狂奔。 In an adorable video showing his first trip to the beach, Duncan Lou Who can been seen excitedly galloping along the sand and paddling in the Duncan Lou Who 的狗第一次來(lái)到海邊的場(chǎng)景，他興奮地在沙灘上飛奔、或是趟水嬉戲。 His exciting day trip was filmed by Panda Paws Rescue, a Washington statebased charity that cares for Duncan and other dogs with special Panda Paws Rescue 拍攝，該組織專門 照料 Duncan 以及其他有特殊需求的狗。 Despite only having front limbs, the boxer is able to not only balance, but also run really fast and play with the other dogs that joined him for the ， Duncan 不僅能讓自己保持平衡，還能快速奔跑，和其余同他一起遠(yuǎn)足的狗 狗玩耍。 He was born with deformed back legs, which were later removed to make the dog more fortable. Duncan 出生時(shí)，它的后肢就是畸形的，此后為了讓他舒服些 ,只能進(jìn)行截肢。 His owners, who posted the video on YouTube, said he has a wheelchair but doesn39。t like to use 傳到了 YouTube 上，他們說(shuō)有一把供 Duncan 使用的輪椅，但是他并不愛用。 39。We let him be free and just walk on his two legs. There is some slow motion in this video, but none of the video has been sped up, this gives you an idea of how fast Duncan really it,39。 his owners said. “我們讓他自由地用兩條腿行走。視頻中有些特意制作的慢鏡頭，但是沒(méi)有任何一處做過(guò)加速處理，你們可以通過(guò)視頻感受到 Duncan 跑得有 多快。 ”主人們說(shuō)。 The thrill of running through the surf was clear to see, as Duncan raced people and dogs across the sand, with his tail wagging excitedly. Duncan 踏著浪花，在沙灘上同其他人及狗賽跑，還興奮地?fù)u著尾巴，他的喜悅之情顯而易見。 Duncan39。s owners have described him as a 39。trooper39。, adding on charity39。s Facebook page: 39。He39。s happy, healthy and as far as he knows, normal too.39。主人們用 “騎兵 ”一 第 38 頁(yè) 共 39 頁(yè) 詞來(lái)形容 Duncan，他們?cè)诮M織的 Facebook 中寫道： “他很快樂(lè)，也很健康；而且在他自己看來(lái)，他是條正常的狗。 ”39。It would be the best if he had four legs, of course, but his body wasn39。t built to have back legs and that39。s OK. He and we have just adapted.39。 “他如果能有四條腿當(dāng)然最好，但是他天生就失去了后肢，這也沒(méi)什么關(guān)系，無(wú)論是他還是我們都已經(jīng)適應(yīng)了這一點(diǎn)。 ” I39。m thankful to PSG for giving me the opportunity to continue but I feel now is the right time to finish my career, playing at the highest level. If you had told me as a young boy I would have played for and won trophies with my boyhood club Manchester United, proudly captained and played for my country over one hundred times and lined up for some of the biggest clubs in the world, I would have told you it was a fantasy. I39。m fortunate to have realised those this day, one of my proudest achievements is captaining my country. I knew every time I wore the Three Lions shirt, I was not only following in a long line of great players, I was also representing every fan that cared passionately about their country. I am honoured to represent England both on and off the wouldn39。t have achieved what I have done today without my family. I39。m grateful for my parents39。 sacrifice, which made me realise my dreams. I owe everything to Victoria and the kids, who have given me the inspiration and support to play at the highest level for such a long period. I also want to thank Simon Fuller and his team for their continued support. I want to thank all my teammates, the great managers that I had the pleasure of learning from. I also want to thank the fans who have all supported me and given me the strength to succeed. Nothing will ever pletely replace playing the game I love, however I feel like I39。m starting a new adventure and I39。m genuinely excited about what lies ahead. I39。m fortunate to have been given many opportunities throughout my career and now I feel it39。s my time to give back.