汽車發(fā)動(dòng)機(jī)缸蓋三面銑專用機(jī)床設(shè)計(jì)(本科畢業(yè)論文設(shè)計(jì)).doc
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汽車發(fā)動(dòng)機(jī)缸蓋三面銑專用機(jī)床設(shè)計(jì)(本科畢業(yè)論文設(shè)計(jì)),摘要制造業(yè)是一個(gè)國(guó)家或地區(qū)經(jīng)濟(jì)發(fā)展的重要支柱,其發(fā)展水平標(biāo)志著該國(guó)家或者地區(qū)的經(jīng)濟(jì)實(shí)力,科學(xué)水平,生活水準(zhǔn)和國(guó)防實(shí)力。國(guó)際市場(chǎng)的競(jìng)爭(zhēng)歸根結(jié)底是各國(guó)制造生產(chǎn)能力的競(jìng)爭(zhēng)。當(dāng)前世界已進(jìn)入知識(shí)經(jīng)濟(jì)時(shí)代,知識(shí)經(jīng)濟(jì)與以往經(jīng)濟(jì)形態(tài)的不同主要在于對(duì)知識(shí),特別是對(duì)知識(shí)的創(chuàng)新與利用的依賴。發(fā)動(dòng)機(jī)缸蓋是內(nèi)燃機(jī)中的重要部件,結(jié)構(gòu)形狀復(fù)雜,工作...
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制造業(yè)是一個(gè)國(guó)家或地區(qū)經(jīng)濟(jì)發(fā)展的重要支柱,其發(fā)展水平標(biāo)志著該國(guó)家或者地區(qū)的經(jīng)濟(jì)實(shí)力,科學(xué)水平,生活水準(zhǔn)和國(guó)防實(shí)力。國(guó)際市場(chǎng)的競(jìng)爭(zhēng)歸根結(jié)底是各國(guó)制造生產(chǎn)能力的競(jìng)爭(zhēng)。當(dāng)前世界已進(jìn)入知識(shí)經(jīng)濟(jì)時(shí)代,知識(shí)經(jīng)濟(jì)與以往經(jīng)濟(jì)形態(tài)的不同主要在于對(duì)知識(shí),特別是對(duì)知識(shí)的創(chuàng)新與利用的依賴。
發(fā)動(dòng)機(jī)缸蓋是內(nèi)燃機(jī)中的重要部件,結(jié)構(gòu)形狀復(fù)雜,工作時(shí)受熱和受力情況也比較復(fù)雜。用普通銑床加工比較麻煩,而且效率不高,精度低。因此設(shè)計(jì)專用機(jī)床來(lái)進(jìn)行加工。文章就是主要論述了關(guān)于發(fā)動(dòng)機(jī)缸蓋三面銑床的夾具和主銑削頭部分的設(shè)計(jì)過(guò)程,包括方案論證,參數(shù)計(jì)算,以及材料選擇等內(nèi)容。設(shè)計(jì)以要加工零件的主要尺寸參數(shù)精度參數(shù)和生產(chǎn)量為設(shè)計(jì)標(biāo)準(zhǔn),參考現(xiàn)有的機(jī)床布局和零件來(lái)設(shè)計(jì),盡量達(dá)到實(shí)用化,根據(jù)設(shè)計(jì)要求主銑削頭高度要可調(diào),可采用整個(gè)銑削頭可動(dòng)的方式。由于零件的加工余量小,生產(chǎn)量高,因此主軸轉(zhuǎn)速高,因此采用發(fā)動(dòng)機(jī)直接驅(qū)動(dòng)的方式。夾具部分為了保護(hù)基準(zhǔn)面,在基準(zhǔn)面上布置四個(gè)小油缸,靠活塞的上下運(yùn)動(dòng),來(lái)減輕零件在裝夾時(shí)對(duì)基準(zhǔn)面的碰撞磨損,從而保證加工精度。夾具的夾緊采用液壓油缸驅(qū)動(dòng),為了減少油缸的數(shù)目,使控制方便,夾具采用一端固定,一端運(yùn)動(dòng)的方式。在兩個(gè)頂尖中間留有間隙,為裝夾和卸載提供了空余空間。
關(guān)鍵字:缸蓋 , 銑床 , 三面 , 夾具
Abstract
Manufacturing is an important pillar of economic development of a country or region. The level of development that the country or rigion’s economic strength,technological level, standard of living and national defense strength. In the international market compitition States manufaturing capacity. The world has entered the era of the knowledge economy ,knowledge-based economy and the different psttens mainly on lnowledge,especially for the knowledge innovation and the use of direct dependency.
The engine housing is an important part of the gas engine,with complicated structural shape. The case of being heated and stress is complicated on the job. It is difficult to marking with plain milling machine and furthermore efficiency is very low ,dicuss about press of engine cylinder top on three face milling with special parameter count as well as stock option and others. Design is according to main dimension parameter, precision parameter ,and output of the given part as design criteria. Both reference in being rool latout and part came desihn, as best as one can run up to utility melt. According to the desihn repuirements,the head height of main milling can be tunable ,and employ wholly milling head movability and principal transverse direction employ slipway rack. Due to admittance of part is extra small and that output is very high wherefore speed of mainshaft damand high. Then employ limit speed relatively upper angular countact bearing as main,in order to reduce wholly milling cephalic weight and predigest structure employ belt driven by round,with frequency modulation motor driven. The part was be nuped at datum plane,thus secure machining precision. Intensify of the press employ hydraulic ram drove,in order to reduce the number of oil cylinder and brought convenience control. Press employ fast at an eng, one eng kinetic mode . in the top two middle gaps left due to the provsion of spare loading and unloading spsce.
Keywords: cylinder lid, production miller, three face, press
目 錄
摘 要 I
Abstract II
目 錄 III
1 緒論 1
1.1 機(jī)械制造業(yè)在國(guó)民經(jīng)濟(jì)發(fā)展中的重要地位 1
1.2 制造業(yè)的發(fā)展趨勢(shì) 1
1.3 發(fā)動(dòng)機(jī)缸蓋三面銑削專用機(jī)床在發(fā)動(dòng)機(jī)工業(yè)中的重要性 5
1.4 發(fā)動(dòng)機(jī)缸蓋三面銑床的發(fā)展?fàn)顩r 5
1.5 本次課題的研究意義 5
2 發(fā)動(dòng)機(jī)缸蓋三面銑削專用組合機(jī)床設(shè)計(jì)的方案論證 6
2.1 加工原理 6
2.2 方案比較及選型 7
2.2.1 方案1 7
2.2.2 方案2 8
2.2.3 方案3 9
2.2.4 方案4 9
3.總體布局設(shè)計(jì) 10
4.主軸箱的設(shè)計(jì) 11
4.1 主軸的有關(guān)計(jì)算 11
4.1.1 端銑刀的主要結(jié)構(gòu)參數(shù)選擇 11
4.1.2 銑削方式的選擇 12
4.1.3 軸的材料與熱處理 12
4.2 主軸的傳動(dòng)方式 13
4.2.1 齒輪傳動(dòng) 13
4.2.2 帶傳動(dòng) 13
4.2.3 電動(dòng)機(jī)直接驅(qū)動(dòng)方式 14
4.3 主軸箱的布置 14
4.3.1 主軸支承選擇 14
4.3.2 主軸箱的裝配圖 14
4.3.3 主軸箱的布置 16
4.4 電動(dòng)機(jī)的選擇 17
5 動(dòng)力滑臺(tái)的設(shè)計(jì) 18
5.1 動(dòng)力滑臺(tái)的選型 18
5.2 滑臺(tái)參數(shù)確定 19
5.2.1滑臺(tái)的主參數(shù)——滑臺(tái)臺(tái)面寬度 19
5.2.2 液壓滑臺(tái)進(jìn)給力的確定 19
5.2.3 進(jìn)給液壓內(nèi)徑的確定 19
5.2.4 快速行程速度和液壓泵流量的確定 19
5.2.5 工作進(jìn)給速度的確定 20
5.2.6 液壓滑臺(tái)工作循環(huán)的選擇 20
5.3 液壓滑臺(tái)的結(jié)構(gòu) 21
5.3.1活塞杠的安裝形式 21
5.3.2 導(dǎo)軌形式 21
5.3.3 控制擋鐵形式 21
6 夾具設(shè)計(jì) 23
6.1 夾具的基本知識(shí) 23
6.2 夾具方案 23
6.2.1 準(zhǔn)備工作 23
6.2.2 基本方案 23
6.3 油缸選擇 25
6.4 夾具導(dǎo)軌 25
6.4.1 導(dǎo)軌的作用和要求 25
6.4.2 導(dǎo)軌的結(jié)構(gòu)設(shè)計(jì) 26
6.5 夾具的尺寸設(shè)計(jì) 29
6.5.1 夾具基準(zhǔn)面的尺寸計(jì)算 29
6.5.2夾具頂尖行程的確定 30
6.5.3 小油缸之間的距離的確定 30
6.5.4 夾具外形尺寸 30
7 結(jié)束語(yǔ) 31
參考文獻(xiàn) 32