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鹽城工學(xué)院畢業(yè)設(shè)計(jì)說(shuō)明書 2009
雙缸柴油機(jī)汽缸體鉆削組合機(jī)床總體及夾具設(shè)計(jì)
摘要：柴油機(jī)汽缸體為大批量生產(chǎn)的零件，為了提高生產(chǎn)效率，滿足被加工零件的精度要求及保證加工精度的穩(wěn)定性，本課題設(shè)計(jì)了一臺(tái)用于雙缸柴油機(jī)汽缸體雙面鉆孔的組合機(jī)床。本文介紹了該組合機(jī)床總體設(shè)計(jì)和夾具設(shè)計(jì)的思路與內(nèi)容。第一部分是總體設(shè)計(jì)，首先，進(jìn)行了總體方案論證，采用單工位雙面鉆削組合機(jī)床，刀具選用高速鋼麻花鉆，并根據(jù)切削用量的選擇，計(jì)算切削力、切削扭矩及切削功率，確定主軸直徑、外伸尺寸、接桿型號(hào)，選擇滑臺(tái)、動(dòng)力箱等通用部件，再確定動(dòng)力部件的工作循環(huán)及工作行程，完成機(jī)床聯(lián)系尺寸的制定。最后繪制了三圖一卡。第二部分是夾具設(shè)計(jì)，經(jīng)過(guò)對(duì)被加工零件的全面分析，定位方案采用三面定位，導(dǎo)向采用固定鉆模板可換鉆套導(dǎo)向，夾緊裝置采用液壓夾緊機(jī)構(gòu)，直接夾壓于工件上，反應(yīng)快捷，夾壓平穩(wěn)可靠，夾具體為框架式結(jié)構(gòu)，有良好的剛性，使夾具能長(zhǎng)期保持可靠的精度和穩(wěn)定性。該組合機(jī)床不僅能保證鉆孔精度，還能提高加工效率，降低工人的勞動(dòng)強(qiáng)度。設(shè)計(jì)的夾具定位可靠、夾壓穩(wěn)定、操作方便，達(dá)到了設(shè)計(jì)要求。
關(guān)鍵詞：組合機(jī)床；鉆孔；總體設(shè)計(jì)；夾具設(shè)計(jì)
The overall and jig design of the overall and jig the combined machine-tool for drilling the body of two-cylinder diesel
Abstract：The cylinder block of diesel is a product which nedds mass production. In order to prove the production efficiency,and meet the precision requeste of the components processed and the precision stability, this topic design a combined machine-tool to be used in the two-cylinder diesel engine with both sides drilling holes. It introduces the design of overall and jig of this combined machine-tool. The first part is overall design. First, it carries out the argumentation of the overall plan, adopte the combined machine-tool with single location double faces drilling, selecte the high-speed steel twist drill. According to the cutting parameters, it calculates the cutting force, the cutting torque and the cutting power, determined spindle diameter, the extend size and the link-pole model, chose sliding table, the power box and so on, then determine the operating cycle and the stroke of the power part, formulate the relation size of the machine-tool. Finally, it figures out the productivity which satisfies the request. The second part is the jig design, after analyse the workpiece, the location plan adopte three-face location; the guiding equipment used the fixed drill plate with replaceable drill bush; the clamp uses the hydraulic pressure device, it directly presses on the workpiece, which responds quickly, fixes steadily and reliably; the jig-body utilize the frame structure, possess fine rigidity, causes the jig to maintain good long-term precision. This combined machine-tool not only guarante the drill hole precision, but also enhance the processing efficiency, reduce workers' labor intensity. The jig orients reliably, clamps stably, operates easily, and meets it the design request well.
Key words：Combined machine-tool; Drill hole; Overall design;Jig design