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邵陽學(xué)院畢業(yè)(論文)
內(nèi)容提要
本次進行的是429發(fā)動機曲軸箱銑主軸孔卡瓦槽夾具設(shè)計。銑削加工一般切削力較大,且是多刀齒斷續(xù)切削,其大小和方向瞬時急劇地變化,尤其是刀齒切入和切出的過程中會在工件上產(chǎn)生沖擊和振動。所以,設(shè)計銑床夾具時應(yīng)特別考慮工藝系統(tǒng)的剛度,夾具要有足夠大的夾緊力。夾具上一般有確定與刀具間相對位置的對刀裝置和確定它在車床工作臺方向的定位鍵,這也是銑床夾具結(jié)構(gòu)的主要特征。
本次夾具設(shè)計的內(nèi)容為:
(1)研究原始資料,明確設(shè)計要求;
(2)擬定夾具結(jié)構(gòu)方案,繪制夾具結(jié)構(gòu)草圖;
①確定定位方案,選擇定位元件;
②確定工件的夾緊方案;
③確定夾具其它組成部分的結(jié)構(gòu)形式;
④確定夾具的形式和夾具的總體結(jié)構(gòu)。
(3)繪制夾具的裝配草圖和裝配圖;
(4)繪制夾具的零件圖。
經(jīng)過設(shè)計和討論,終于圓滿地完成了設(shè)計任務(wù)。本次設(shè)計整個設(shè)計過程條理清晰,能讓讀者明白整個過程。力求結(jié)構(gòu)合理,計算準確,經(jīng)濟可靠。本設(shè)計的創(chuàng)新之處在于簡化了銑床夾具的結(jié)構(gòu)設(shè)計,使其結(jié)構(gòu)更簡便,同時也能滿足設(shè)計要求,可以用于實際生產(chǎn)中。
關(guān)鍵詞:定位;夾緊 夾具
Abstract
This time carries on is 429 engine crankcase mill host axle hole bottom wall and anchor packer trough jig design. The milling processing general cutting force is big, is precisely the multi-knife tooth off and on cuts, its size and the direction instant change suddenly, in particular the knife tooth cuts into in the process which and cuts to be able on the work piece to have the impact and the vibration. Therefore, designs time the milling jig should consider specially the craft system the rigidity, the jig must have the enough big clamping force.
This design general steps :
(1) original research data clearly design requirements ;
(2) Prepare jig program structure, the structure of the draft map jig;
①Determine positioning program choices positioning components;
② Determine Jig;
③ Identify specific kits and other devices;
④ mapping jig master plan .
After the design and discussion, and finally the successful completion of the design task. The current design of the entire design process lucid, readers can understand the whole process. To structured, accurate calculation, the economy reliable. The design innovations to simplify the structure of the drilling template design to the structure simpler, but also to meet the design requirements. However, because I lack the experience and knowledge of the limitations of the design process inevitably some mistakes, the jig work and the availability of actual practice has yet to be tested, ask your leadership, teachers, students valuable advice and insights, I would like to express my sincere gratitude!
Keyword : Positioning;jig ;clamp