【正文】 序，滿足凸輪軸轉(zhuǎn)角對(duì)應(yīng)的性能要 求。此外三個(gè)機(jī)構(gòu)之間還要滿足隨著凸輪軸轉(zhuǎn)角不同完成動(dòng)作的過程不同且相互配合。 （圖 ） 對(duì)比機(jī)構(gòu)：利用定軸輪系進(jìn)行減速，雖然能夠達(dá)到要求，但是 9 齒輪的 配合級(jí)數(shù)過多，配合齒輪的齒數(shù)相差過大， 傳動(dòng)鏈比較長(zhǎng) ，所占用的總體空間比較大，如（圖 ）： （圖 ） 送料機(jī)構(gòu)： 方案一： 采用 對(duì)心曲柄滑塊機(jī)構(gòu) 如下圖，由于在空間上軸與軸之間的距離較大，并且曲柄回轉(zhuǎn)中心的位置不一定與工作臺(tái)在一個(gè)平面內(nèi)，這 是采用該種機(jī)構(gòu)要考慮的首要問題；用錐齒輪可以解決該問題；優(yōu)點(diǎn)是容易設(shè)計(jì)，加工成本低；機(jī)構(gòu)簡(jiǎn)圖如（圖 ）： （圖 ） 對(duì)比機(jī)構(gòu)：方案二： 10 如下圖，采用槽輪機(jī)構(gòu)進(jìn)行送料；這種機(jī)構(gòu)的優(yōu)點(diǎn)是不需要用錐齒輪換向，直接將主軸的轉(zhuǎn)動(dòng)轉(zhuǎn)換成為滑塊的往復(fù)運(yùn)動(dòng)；缺點(diǎn)是槽輪的加工精度要求較高，加工成本較高。先把回轉(zhuǎn)運(yùn)動(dòng)動(dòng)力轉(zhuǎn)化為齒條的上下運(yùn)動(dòng)，再通過齒輪傳遞給連接刀具的齒條，從而使刀具進(jìn)行進(jìn)刀。但是此種機(jī)構(gòu)增加了運(yùn)動(dòng)傳遞路徑。兩個(gè)傳送輪的半徑分別設(shè)定為 145 和 100，使的 H 的轉(zhuǎn)速降到 1000r/min。當(dāng)運(yùn)動(dòng)開始時(shí)，即：當(dāng) B 點(diǎn)位于極位 B1 時(shí)， A 點(diǎn)與極位 C1 點(diǎn)之間的距離為 40，使滑塊循環(huán)推動(dòng)工件從而達(dá)到送料效果。從 180 度到 360 度為回程。 從而得到圖（ ）所示工作循環(huán)圖： 24 圖（ ） 25 七、 proe 運(yùn)動(dòng)分析 送料機(jī)構(gòu)：送料機(jī)構(gòu)為曲柄滑塊機(jī)構(gòu)，在給定曲柄一個(gè)角速度后，從動(dòng)件（滑塊）的運(yùn)動(dòng)規(guī)律，三維模型見附錄（圖 ）； （ 1）滑塊的位移曲線見附 錄（圖 ）； （ 2）滑塊的速度曲線見附錄（圖 ）； （ 3）滑塊的加速度曲線見附錄（圖 ）； 定位機(jī)構(gòu)的 proe 實(shí)體效果圖：見附錄（圖 ）； 夾緊機(jī)構(gòu)的 proe 實(shí)體效果圖：見附錄（圖 ）； 進(jìn)刀機(jī)構(gòu)的 proe 實(shí)體效果圖：見附錄（圖 ）； 減速機(jī)構(gòu)的 proe 實(shí)體效果圖：見附錄（圖 ）； 錐齒輪傳動(dòng) proe 效果圖 : 見附錄（圖 ）； 總裝配實(shí)體效果圖：見附錄（圖 ）。此次課程設(shè)計(jì)碰到了很多的問題，平時(shí)我們的學(xué)習(xí)中總是注意技巧性，但在實(shí)際應(yīng)用中，所有的數(shù)據(jù)都得自己設(shè)計(jì)，然后計(jì)算。實(shí)踐出真知，通過親自動(dòng)手制作，使我們掌握的知識(shí)不再是紙上談兵。 40 參考文獻(xiàn) [1]牛鳴岐 王保民 余述凡《機(jī)械原理課程設(shè)計(jì)手冊(cè)》重慶大學(xué)出版社， [2]孫桓 陳作模 葛文杰《機(jī)械原理》第七版，高等教育出版社， [3]林清安 Proe/ENGINNEER Wildfire 系列教程 g an employment tribunal claim Employment tribunals sort out disagreements between employers and employees. You may need to make a claim to an employment tribunal if: ? you don39。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 Watch mCayman Islandsbased Webb, the head of Fifa39。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 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。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。 Then in high school, think don39。 42 A person39。嫌惡過自己的怯懦，最終卻發(fā)現(xiàn)有很多 緣分 ，有很多錯(cuò)過，好像冥冥之中真的已經(jīng)注定。 From the corner at the beginning of deep friendship。 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. The supersonic descent could happen as early as Sunda. The weatheThe balloon will slowly drift to the edge of space at 120,000 feet ( Then, I would assume, he will slowly step out onto something resembling an Olympic diving platform. Below, the Earth bees the concrete bottom of a swimming pool that he wants to land on, but not too hard. Still, he3