畢業(yè)設(shè)計----汽車變速箱上端面鉆孔組合機床設(shè)計(留存版)

　　

【正文】 0 =40，=63mm，=120mm =480r/min，=252r/min（2）傳動軸Ⅰ——主軸3：m=3，A=，u=520/252 取=26，=51，=153mm =78mm，=252r/min，=520r/min 主軸4，5，6均與主軸3相同，由傳動軸Ⅰ帶動（3）主軸1——傳動軸Ⅱ：m=3，A=，=21，u=43/21 =43，=63mm，=129mm =520r/min，=254r/min 主軸2與主軸1一樣傳動軸Ⅲ和主軸7與8之間的傳動與其一樣（4）傳動軸Ⅱ——傳動軸Ⅰ：m=3，A=125mm，u=40/43 =40，=43，=120mm，=129mm =252r/min，=234r/min（5）驅(qū)動軸——手柄軸：m=3，A=92mm，u=21/40 =120mm，=63mm=21，=40，=480r/min，=252r/min（6）傳動軸Ⅳ——油泵軸：m=2，A=70mm，u==24，=46，=48mm，=92mm，=480r/min，=232r/min（7）手柄軸——傳動軸Ⅳ：m=2，A=70mm，u= =46=42，=84mm，=92mm=252r/min，=232r/min軸9是驅(qū)動軸，軸10是傳動軸I，軸11是傳動軸II，軸12是傳動軸III傳動軸直徑計算：經(jīng)過公式簡單計算可得各傳動軸直徑均取30mm多軸箱坐標(biāo)計算：該多軸箱安裝在動力箱上，坐標(biāo)原點靠近主軸箱左側(cè)（對著多軸箱正面看）的定位銷孔上，其尺寸是距多軸箱側(cè)邊E=25mm，距多軸箱低邊H=30mm。 組合機床是由一些通用部件和專用部件組成的。(3)本道工序加工部位的尺寸，精度、表面粗糙度、形狀位置尺寸精度及技術(shù)要求，還包括本道工序?qū)η暗拦ば蛱岢龅囊螅ㄖ饕付ㄎ换鶞?zhǔn)）。對切削深度的選取，因在實體上鉆孔，故其數(shù)值均為加工孔徑的一半。特別是數(shù)字程序控制的發(fā)展，為發(fā)展這種機床創(chuàng)造了更有利的條件。機械驅(qū)動的動力部件具有性能穩(wěn)定，工作可靠等優(yōu)點。(2)具有回轉(zhuǎn)工作臺的機床，這種機床的夾具和工件可繞垂直軸線回轉(zhuǎn)，在回轉(zhuǎn)工作臺上每個工位通常都裝有工件。(3)組合機床的通用部件是經(jīng)過周密設(shè)計和長期生產(chǎn)實踐考驗的，又有專門廠成批制造，因此結(jié)構(gòu)穩(wěn)定、工作可靠，使用和維修方便。（4）、液壓裝置的設(shè)計 液壓滑臺、定位夾緊裝置均為液壓控制。本設(shè)計論文包括以下幾大部分內(nèi)容：中英文摘要、緒論、第一章 機床總體設(shè)計、第二章 多軸箱部件設(shè)計、第三章 多軸箱零件校核及總結(jié)和參考文獻。 bination machine has many advantages , such as high efficiency , high accuracy and low cost . It is posed of some general parts , such as bed ,column ,work able ,power unit ,and some special parts designed according to different work piece machining need. The preface of a lot of works can be pleted on the bination machine, but in regard to the majority current usage of bination machine, then and primarily used for the flat surface to process and the bore to process two big work preface. The main part including :(1) Formulating technological plan We,ve learned the characteristic of the part designed ,accuracy and specification ,locating and fixing ,productivity and machining structure by the practice .Then the technological operation and work order can be determined which can be finished in bination machine.(2) Combination machine frame design determines the interrelation of the different part in the machining tool ,select general parts and tool oriented .Then pute cut feed and productivity finally draw a sketch map of the machine .(3) Combination machine parts design including headstock、proper transmission layout 、shaft and gear move freely without interference which ensure the stability and accuracy during transmission ,then design dedicated select bearings and engine etc.(4)Hydraulic pressure equipment design slipway and locating and fixing device are all controlled by hydraulic pressure .It adopts many hydraulic control valves ,which ensure the stability ,circulation and accuracy . In addition ,the thesis deals with amount of ponents devices and calculations ,including :(1) Choice of the main shaft and disposal of transmission , by doing so to ensure the accuracy of ponents machining in process when the main shaft rotating。組合機床雖然有很多優(yōu)點，但也還有缺點：(1)組合機床的可變性較萬能機床低，重新改裝時有10%~20%的零件不能重復(fù)利用，而且改裝時勞動量較大。在工作臺中央安裝立柱，立柱上安裝動力部件，而在工作臺的周圍還安裝有臥式動力部件，工件和夾具則安裝在回轉(zhuǎn)工作臺上，這種機床一般都是復(fù)合式的。提高生產(chǎn)率的主要方法是改善機床布局，增加同時加工的刀具，減少加工余量，提高切削用量，提高工作可靠性以及縮短輔助時間等。為了滿足其加工精度的要求，我們首先要對加工的零件做工藝方案的分析，制定組合機床工藝方案是設(shè)計組合機床最重要的步驟之一。1