【正文】 = 槽深 h H=s(LRr)=35 Theory of Machines and Mechanisms 30 撥盤軸徑 1d d1=2(Ls)=12 槽輪軸徑 2d d2=2(LRr)=12 槽頂側(cè)壁厚 b B=1~5mm 經(jīng)驗(yàn)所得此處取 B=2mm 鎖止弧半徑 0r r0=Rrb=23 運(yùn)動(dòng)分析 如圖 、圖 、圖 是槽輪邊緣的任意點(diǎn)的運(yùn)動(dòng)規(guī)律分析圖，根據(jù)圖中所給出的位移、速度、加速度的分析數(shù)據(jù)可得出槽輪做間歇運(yùn)動(dòng)，速度和加速度（角速度和角加速度）周期相同，而位置的周期是他們周期的 2 倍。 設(shè)計(jì)過程中 方案 可 采用蝸輪蝸桿的減速機(jī)構(gòu)，但是考慮的傳輸效率問題，改為變速機(jī)構(gòu)采用一級(jí)直齒圓柱齒輪的減速，但是 考慮到 機(jī)構(gòu)尺寸 問題和 在實(shí)際情況中可能因?yàn)槭芰Φ仍?，?dǎo)致傳動(dòng)的不通暢或者零件的快速磨損 等 ， 在 改進(jìn)時(shí)如果采用多級(jí)齒輪變速會(huì)減輕這一問題。 圓盤間歇轉(zhuǎn)動(dòng)部分：因?yàn)樵谙到y(tǒng)的原始要求中需要有間歇轉(zhuǎn)動(dòng)的特性，而工位為 6個(gè)，所以在設(shè)計(jì) 過程中我們首先想到了可以實(shí)現(xiàn)間歇轉(zhuǎn)動(dòng)的典型機(jī)構(gòu) ——槽輪機(jī)構(gòu)。此外，經(jīng)過大家的反復(fù)考慮與討論，采用了凸輪機(jī)構(gòu)來完成壓蓋和換蓋過程。 由于槽輪間歇 機(jī)構(gòu)較為復(fù)雜， pro/e建模和仿真的能力尚 不成熟 ， 中間有些小問題是無法避免的。 凸輪的設(shè)計(jì)在仿真時(shí)，出現(xiàn)加速度變化較為劇烈，雖然用了一些方式減輕了剛性沖擊，但是沖擊問題 仍然存在，所以在凸輪設(shè)計(jì)時(shí)， 我們采用了倒角銜接 的方式設(shè)計(jì)以消除這一問題 ，也因此出現(xiàn)微小誤差，是我們無法克服的 。 綜上所訴，我們的設(shè)計(jì)方案是在我們力所能及范圍內(nèi)是可行并且最優(yōu)化了的。 六角槽輪建模： 出基本圖形 ， 再 采用一次拉伸 新建 “零件 ”，通 過 “旋轉(zhuǎn)工具 ”、 “拉伸工具 ”、 “去除材料 ”和 “陣列 ”的命令，建立槽輪的模型，如 下 圖所示。裝配圖如下圖所示。 2) 傳動(dòng)桿的一端與槽輪相對(duì)的兩個(gè)槽間建立凸輪副連接，如圖所示。點(diǎn)擊“反向”，點(diǎn)擊“輪廓”選項(xiàng)卡，設(shè)置參數(shù)如圖 所示： 4) 點(diǎn)擊“機(jī)構(gòu)分析”，設(shè)置參數(shù)如圖 。 Theory of Machines and Mechanisms 36 圖 “輪廓”選項(xiàng)卡參數(shù)設(shè)置 圖 機(jī)構(gòu)分析定義參數(shù)設(shè)置 圖 運(yùn)行電動(dòng)機(jī) 圖 定義起始 十一、 設(shè)計(jì)小結(jié) 到此， 我們總算完成了對(duì)旋轉(zhuǎn)灌裝機(jī)的設(shè)計(jì)。我們?cè)谡n堂上掌握是僅僅是專業(yè)課的理論知識(shí)，如何去鍛煉我們的實(shí)踐能力，如何把我們的所學(xué)的專業(yè)基礎(chǔ)課程理論知識(shí)運(yùn)用到實(shí)踐中去。在做本次課程設(shè)計(jì)的過程中，我們感觸最深的當(dāng)屬如何把學(xué)過的理論知識(shí)運(yùn)用于實(shí)際，并且實(shí)踐，培養(yǎng)了我們運(yùn)用所學(xué)的理論和方法去發(fā)現(xiàn)、分析和解決工程實(shí)際問題的能力，而Theory of Machines and Mechanisms 37 且還加深了我們對(duì)各類機(jī)械機(jī)構(gòu)的認(rèn)識(shí)。我們不能單靠課本理論，這在實(shí)際運(yùn)用中會(huì)出現(xiàn)差別。同時(shí)在凸輪設(shè)計(jì)，連桿運(yùn)動(dòng)分析，運(yùn)動(dòng)簡(jiǎn)圖的繪制等過程中，我們學(xué)會(huì)了運(yùn)用計(jì)算機(jī)分析設(shè)計(jì)各類凸輪機(jī)構(gòu)，用 pro/E軟件對(duì)機(jī)構(gòu)桿件的運(yùn)動(dòng)進(jìn)行調(diào)試和分析，真正做到了學(xué)以致用，理論聯(lián)系實(shí)際。這次課程設(shè)計(jì)是分組進(jìn)行，通過彼此的討論，發(fā)表自己的想法，接受隊(duì)友的意見，雖然期間少不了爭(zhēng)吵，但是大家始終堅(jiān)信團(tuán)結(jié)就是力量，團(tuán)隊(duì)合作，自己逐漸認(rèn)識(shí)到集體的重要性意見正確采納 別人的意見想法。在此我要向我的隊(duì)友說，因?yàn)橛辛四銈儯易兊酶墒?，我相信這些知識(shí)和能力對(duì)自己今后的學(xué)習(xí)肯定是有用的。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 information 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. If you are thinking about signing up for a damagesbased agreement, you should make sure you39。s antiracism taskforce, is in London for the Football Association39。s Premier League match at Chelsea on Sunday. I am going to be at the match tomorrow and I have asked to meet Yaya Toure, he told BBC Sport. Theory of Machines and Mechanisms 39 For me it39。s 21 win. Michel Platini, president of European football39。s actions. CSKA said they were surprised and disappointed by Toure39。 May be back in the past, to oneself the paranoid weird belief disillusionment, these days, my mind has been very messy, in my mind constantly. Always feel oneself should go to do something, or write something. Twenty years of life trajectory deeply shallow, suddenly feel something, do it. 一字開頭的年齡已經(jīng)到了尾聲?？傆X得自己自己似乎應(yīng)該去做點(diǎn)什么，或者寫點(diǎn)什么。 The end of our life, and can meet many things really do? 而窮盡我們的一生，又能遇到多少事情是真正地非做不可？ During my childhood, think lucky money and new clothes are necessary for New Year, but as the advance of the age, will be more and more found that those things are optional。t really grow up, it seems is not so important。t want to give vent to out your inner voice can be in the high school children of the feelings in a period, but was eventually infarction when graduation party in the throat, later again stood on the pitch he has sweat profusely, looked at his thrown a basketball hoops, suddenly found himself has already can39。 Originally, this world, can produce a chemical reaction to an event, in addition to resolutely, have to do, and time. 原來，這個(gè)世界上，對(duì)某個(gè)事件能產(chǎn)生化學(xué)反應(yīng)的，除了非做不可的堅(jiān)決，還有，時(shí)間。s time, your ideas are always special to clear. Want, want, line is clear, as if nothing could shake his. Also once seemed to be determined to do something, but more often is he backed out at last. Dislike his cowardice, finally found that there are a lot of Theory of Machines and Mechanisms 40 love, there are a lot of miss, like shadow really have been doomed. Those who do, just green years oneself give oneself an arm injection, or is a selfrighteous spiritual. 一個(gè)人的時(shí)候，自己的想法總是特別地清晰。也曾經(jīng)好像已經(jīng)下定了決心去做某件事，但更多的時(shí)候是最后又打起了退堂鼓。那些曾經(jīng)所謂的非做不可，只是青蔥年華里自己給自己注射的一支強(qiáng)心劑，或者說，是自以為是的精神寄托罷了。 Those were broken into various shapes of stationery。 Have declared the end of the encounter that haven39。突然想到那件藍(lán)格子襯衫；那些被折成各種各樣形狀的信紙；那段從街角深巷伊始的友誼；還有那場(chǎng)還沒有開始就宣告了 終結(jié)的邂逅計(jì)劃 …… 那些年那些天的非做不可，終于和青春一樣，都將在我們的人生中謝幕。ll be traveling fast, so despite the distance, it will not be like Theory of Machines and Mechanisms 41 diving into the deep end of a pool. It will be like he is diving into the shallow end. Skydiver preps for the big jump When he jumps, he is expected to reach the speed of sound 690 mph (1,110 kph) in less than 40 seconds. Like hitting the top of the water, he will begin to slow as he approaches the more dense air closer to Earth. But this will not be enough to stop him pletely. If he goes too fast or spins out of control, he has a stabilization parachute that can be deployed to slow him down. His team hopes it39。t. Baumgartner still will free fall at a speed that would cause you and me to pass out, and no parachute is guaranteed to work higher than 25,000 feet (7,620 meters). cause there Theory of Machines and Mechanisms 42