購買設(shè)計(jì)請(qǐng)充值后下載，，資源目錄下的文件所見即所得，都可以點(diǎn)開預(yù)覽，，資料完整，充值下載可得到資源目錄里的所有文件。。?！咀ⅰ浚篸wg后綴為CAD圖紙，doc,docx為WORD文檔，原稿無水印，可編輯。。。具體請(qǐng)見文件預(yù)覽，有不明白之處，可咨詢QQ:12401814
黑龍江工程學(xué)院本科生畢業(yè)設(shè)計(jì)
附 錄
Rumsfeld diaphragm spring clutch of production
Car exquisite machine that mankind create, it change and change world of us. At present, the car recoverable amount in the whole world passes over 700 million ownly. Since entering the WTO, the auto industry of our country has demonstrated the momentum developed at full speed, the status in our country's national economic development of auto industry comes more and more outstandingly, own through becoming the pillar industry of our country. Science and technology is the first productivity of promoting the development of society, accelerate sending in the auto industry of our country Paces of the exhibition, further shorten with the disparity among the trades of developed country, standing in the breach will strengthen science and technology Input, improve the independent innovation ability of enterprises.
With the development at full speed of science and technology, the performance of the car engine is improved rapidly. Rotational speed of the engine that at present and spraining The square is generally relatively high, such as 05 sections of maximum power 78KW/5750rpm of Citroen zx, the biggest torsion 42Nm / 420rpm BMW53oi maximum power 170KW/5900rp m, the biggest torsion 300Nm/3500rpm; The torsion change is with the treasure 5 series of horse are examples, in 1983, its biggest torsion of engine was 206Nm, rose to by 2003 500Nm, in 20 years, its torsion increased by 1 time. Should pay attention to footboard strength and engine of the car clutch The torsion is directly proportional to, the increase of the torsion leads to the fact footboard strength increases; And the increase of footboard strength, will cause the driver to be easy Reduce appropriately. So improve in the performance of the car engine - Under the situation that the torsion increases, how to reduce the vapour Car footboard strength of clutch, comfortableness to raise driver, now car clutch design, need, consider A question.
Because the traditional diaphragm spring clutch is unavoidable in the course of using will be produced and worn and torn, this phenomenon Will lead to the fact that compress tightly strength to increase actually, therefore the separation strength of separating clutch increases correspondingly, enable the clutch pedal Strength increases.
Diaphragm pull in the spring out of the support of the parts and no support ring or just a support ring , its structure is simpler and less the parts of the compact, the number and quality are few ； diaphragm pull spring is in central and down the offer is on the same size under the conditions for a relatively large diameter diaphragm spring, and improve the pressure force on the turn of the matrix, and don't build upon, in turn carry the same moment, but the size of the smaller structure ；In or separate state, the shape of a small, the stiffness, the more efficient ； pull in more than to push the lever type of the lever, and the supporting reduce friction loss and transmission higher efficiency, upon the lighter, in state or division, the structure of the spring and the clutch diaphragm build supporting always keep in touch, in the ring will wear support after a gap and build upon the freedom of travel, will not emerge and noise ；Longer life.
拉式膜片彈簧離合器的產(chǎn)生
汽車是人類創(chuàng)造的精美機(jī)器，它改變了和正在改變著我們的世界。目前，全世界汽車保有量己經(jīng)超過七億輛。入世以來，我國汽車工業(yè)呈現(xiàn)出了飛速發(fā)展的勢(shì)頭，汽車工業(yè)在我國國民經(jīng)濟(jì)發(fā)展中的地位越來越來突出，己經(jīng)成為了我國的支柱性產(chǎn)業(yè)?？萍际峭苿?dòng)社會(huì)發(fā)展的第一生產(chǎn)力，要加快我國汽車工業(yè)發(fā)展的步伐，進(jìn)一步縮短與發(fā)達(dá)國家行業(yè)間的差距，首當(dāng)其沖就是要加大科技的投入，提高企業(yè)的自主創(chuàng)新能力。
隨著科技的飛速發(fā)展，汽車發(fā)動(dòng)機(jī)的性能迅速提高。目前發(fā)動(dòng)機(jī)轉(zhuǎn)速及扭矩一般都較高，如富康05款最大功率78KW/5750rpm，最大扭矩42Nm /420rpBMW53oi最大功率170KW/5900rp m，最大扭矩300Nm/3500rpm;扭矩變化以寶馬5系列為例，1983年，其發(fā)動(dòng)機(jī)最大的扭矩為206Nm，到2003年就增加到500Nm，在20年中，其扭矩增加了1倍。要注意汽車離合器的踏板力與發(fā)動(dòng)機(jī)扭矩成正比，扭矩的增加導(dǎo)致踏板力增大;而踏板力的增大，會(huì)導(dǎo)致駕駛員舒適度降低。所以在汽車發(fā)動(dòng)機(jī)的性能提高—扭矩增加的情況下，如何減小汽車離合器的踏板力，提高駕駛員的舒適性，是現(xiàn)在汽車離合器設(shè)計(jì)需要考慮的一個(gè)問題。
由于傳統(tǒng)的膜片彈簧離合器在使用過程中不可避免會(huì)產(chǎn)生磨損，這一現(xiàn)象會(huì)導(dǎo)致實(shí)際壓緊力增大，因而分離離合器的分離力也相應(yīng)增大，使離合器踏板力增加。
拉式膜片彈簧離合器取消了中間支承各零件，并不用支承環(huán)或只用一個(gè)支承環(huán)，使其結(jié)構(gòu)更簡(jiǎn)單、緊湊，零件數(shù)目更少，質(zhì)量更少；拉式膜片彈簧是中部與壓盤相壓在同樣壓盤尺寸的條件下可采用直徑較大的膜片彈簧，提高了壓緊力與傳遞轉(zhuǎn)矩的能力，且并不增大踏板力，在傳遞相同的轉(zhuǎn)矩時(shí)，可采用尺寸較小的結(jié)構(gòu)；在接合或分離狀態(tài)下，離合器蓋的變形量小，剛度大，分離效率更高；拉式的杠桿比大于推式的杠桿比，且中間支承減少了摩擦損失，傳動(dòng)效率較高，踏板操縱更輕便，無論在接合狀態(tài)或分離狀態(tài)，拉式結(jié)構(gòu)的膜片彈簧大端與離合器蓋支承始終保持接觸，在支承環(huán)磨損后不會(huì)形成間隙而增大踏板自由行程，不會(huì)產(chǎn)生沖擊和哭聲；使用壽命更長(zhǎng)。
4