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畢業(yè)設(shè)計說明書（論文）中文摘要

　　　從企業(yè)實際需求出發(fā)，在全面分析被加工零件的結(jié)構(gòu)特點、尺寸精度、被加工孔相互之間位置精度、表面粗糙度和技術(shù)要求的基礎(chǔ)上，指出采用現(xiàn)有設(shè)備不僅工人勞動強(qiáng)度大，生產(chǎn)率低，而且零件加工精度難以保證。根據(jù)實際需要，研制出了4孔單工位組合鉆床。首先通過分析比較，確定了4孔單工位組合鉆床的配置型式及結(jié)構(gòu)的最佳方案，遵循機(jī)械設(shè)計中標(biāo)準(zhǔn)化、通用化、系列化原則，給出機(jī)床的總體設(shè)計，繪制出代表機(jī)床總體設(shè)計的被加工零件工序圖、加工示意圖、機(jī)床聯(lián)系尺寸圖和生產(chǎn)率計算卡。對機(jī)床的關(guān)鍵部分:主軸箱和夾具的結(jié)構(gòu)進(jìn)行了創(chuàng)新設(shè)計。由于在這臺組合鉆床上需同時加工4個孔，雖然間距小，而且孔的排列分散，但是孔的數(shù)量不多，可采用常規(guī)方法排箱實現(xiàn)孔的工序集中的加工方案。鉆床的主軸箱傳動系統(tǒng)通過采用推力球軸承和圓錐滾子軸承等結(jié)構(gòu)方面的創(chuàng)新設(shè)計，完成排箱設(shè)計。組合鉆床夾緊機(jī)構(gòu)，采用了移動式壓板聯(lián)動偏心夾緊機(jī)構(gòu)。減少了裝卸零件所用時間，提高了生產(chǎn)效率。
　　　
　　　
關(guān)鍵詞   組合鉆床 主軸箱 夾具設(shè)計 傳動設(shè)計

畢業(yè)設(shè)計說明書（論文）外文摘要

Title   Design a combination drilling machine which can boring   screw thread bottom bore in two profiles of the diesel motor cylinder
Abstract
In view of the actual conditions of enterprises and on the basis of overall analyzing workpiece structure features，accuracy of size, surface roug-        hness, accuracy of distance between drilled holes and other technical r-    equirements,  this article points out that the existing equipments used to manufacture workpieces may result in lower productivity,greater inte-      nsity of labour and worse working accuracy. Therefore, it is necessary to develop a new type of 4 hole single working position combination drilling machine.Through analysis and comparison, the article has determined the best project of the structure and the disposition of the 4 holes combination drilling m- achine. According to thepriciple of standardization, genera-        lization and serialization in machine design, the article offers the master design of the drilling machine，the  process  drawing  of workpiece, the working  diagram, the connection dimentional drawing of the drilling mac-    hine and the calulating card of productivity. In some key parts of the drilling machine, there are certain new designs on the structure of the spindle box and the fixture. With 4 hole drilled simultaneously on the drilling machine, in addition to small spacing between holes and dispersive arrangement of hole position, the 4 holes drilling program cannot be com-    pleted in con- ventional way. In the transmission system of 4 hole drilling machine are used some new structural designs such as pin bearings and pos-   ition-change- able gears，so that the arrangement of hole position,which cannot be finished in conventional way, can be accompl- ished. The combina-      tion drilling machine is applied a fast spiral pinch machinery whose fea-    tures are not only shortens the time consumed in loading and unloading workpiece but also enhances productivity.

Key Words   Combination drilling machine   Spindle box   Design of fixture   Design of transmission system

目   錄

　　1 緒論……………………………………………………………………………………1
　　1.1 論文背景及研究意義………………………………………………………………1
　　1.2 組合機(jī)床及發(fā)展概況………………………………………………………………1
　　1.3 本文研究的主要內(nèi)容………………………………………………………………3
　　2 組合機(jī)床的總體設(shè)計…………………………………………………………………4
　　2.1 單工位組合鉆床工藝方案的制定…………………………………………………4
　　2.2 組合鉆床配置型式及結(jié)構(gòu)方案的制定……………………………………………5
　　2.3 主要參數(shù)的確定……………………………………………………………………5
　　2.4 組合機(jī)床三圖一卡的設(shè)計…………………………………………………………7
　　3 主軸箱的設(shè)計…………………………………………………………………………15
　　3.1 繪制主軸箱原始依據(jù)圖……………………………………………………………16
　　3.2 主軸箱傳動系統(tǒng)的設(shè)計及計算……………………………………………………16
　　3.3 主軸箱通用軸類零件選擇…………………………………………………………22
　　3.4 主軸及傳動軸軸承型號的選用……………………………………………………23
　　4 組合機(jī)床夾具設(shè)計……………………………………………………………………28
　　4.1 定位支撐系統(tǒng)設(shè)計…………………………………………………………………29
　　4.2 導(dǎo)向裝置的設(shè)計……………………………………………………………………32
　　4.3 夾緊機(jī)構(gòu)設(shè)計………………………………………………………………………33
　　4.4 夾具體結(jié)構(gòu)設(shè)計……………………………………………………………………35
　　結(jié)束語……………………………………………………………………………………36
　　致謝………………………………………………………………………………………38
　　參考文獻(xiàn)…………………………………………………………………………………40