氣門搖桿軸支座工藝及其夾具設(shè)計(jì)

摘  要
    本次畢業(yè)設(shè)計(jì)題目是某基座零件的工藝及其夾具設(shè)計(jì)，設(shè)計(jì)過(guò)程中綜合應(yīng)用了機(jī)械制圖，機(jī)械設(shè)計(jì)，機(jī)械制造工程學(xué)和互換性與測(cè)量技術(shù)基礎(chǔ)等相關(guān)課程知識(shí)。本畢業(yè)設(shè)計(jì)在氣門搖桿軸支座工藝規(guī)程設(shè)計(jì)過(guò)程中，詳細(xì)地分析了氣門搖桿軸支座的加工工藝，通過(guò)工藝方案的比較與分析選擇了符合技術(shù)要求的加工工序，并對(duì)各個(gè)加工工序進(jìn)行了計(jì)算，最終形成了機(jī)械加工工藝過(guò)程卡和機(jī)械加工工序卡。本設(shè)計(jì)進(jìn)行了兩套鉆孔專用夾具的設(shè)計(jì)，闡述了定位方案的選擇、夾緊方案的確定、夾具體與鉆模設(shè)計(jì)，運(yùn)用AutoCAD和proe完成了此專用夾具的裝配圖和零件圖以及三維模型繪制。

關(guān)鍵詞：零件加工；工藝規(guī)程設(shè)計(jì)；鉆孔；專用夾具；CAD
 
Design of Process and Fixture of valve Rocker Shaft Pedestal
Abstract
The graduation design task is design of process and fixture of a base parts. This design is comprehensively applied the knowledge of correlated curriculum such as mechanical drawing, mechanical design, mechanical manufacturing and basic technology of exchangeability measurement act. This graduation design detailed analysis process of valve rocker shaft pedestal. Process what is in keeping with technical requirements is selection through comparing and analyzing process scheme, to obtain the machinery process card and mechanical processes card. This design designed two drill hole jig fixture of rocker shaft pedestal, expounds about the positioning scheme selection, determine the clamping schemes. Brilling jig design and fixture pedestal design. Use AutoCAD and Pro/ENGINEER completed the assembly part drawing and the 3-D modeling of this special fixture.

Key Words: Parts processing; Process flow design; drill hole; Dedicated fixture; CAD

 
目  錄
1 緒論 1
1.1機(jī)械制造工藝與夾具設(shè)計(jì)的發(fā)展概況 1
1.2機(jī)械制造工藝與夾具設(shè)計(jì)相關(guān)技術(shù)的國(guó)內(nèi)外現(xiàn)狀 1
1.3選題意義和關(guān)鍵問(wèn)題 2
1.3.1 選題的背景 2
1.3.2選題意義 2
1.3.3關(guān)鍵問(wèn)題 2
2 機(jī)械加工工藝與夾具設(shè)計(jì)概述 4
2.1 機(jī)械加工工藝過(guò)程中的基本概念 4
2.2機(jī)械加工工藝規(guī)程設(shè)計(jì)的基本準(zhǔn)則 4
2.3機(jī)床夾具概述 5
2.4　工件在夾具中的定位 6
2.5工件在夾具中的夾緊 6
2.5.1夾緊裝置的組成 6
2.5.2夾緊裝置的基本要求 7
2.5.3常用夾緊機(jī)構(gòu) 7
3 氣門搖桿軸支座機(jī)械加工工藝規(guī)程設(shè)計(jì) 8
3.1  零件分析 8
3.1.1 零件作用 8
3.1.2 零件工藝分析 8
3.2 工藝規(guī)程定性設(shè)計(jì) 9
3.2.1基準(zhǔn)選擇 9
3.2.2確定加工方法、工藝路線制定 9
3.3工藝規(guī)程定量設(shè)計(jì) 11
3.3.1機(jī)械加工余量、工藝尺寸及毛坯尺寸的確定 11
3.3.2切削余量及基本工時(shí)的確定 12
4 氣門搖桿軸支座專用鉆孔夾具設(shè)計(jì) 17
4.1鉆夾具的結(jié)構(gòu)形式與設(shè)計(jì)要點(diǎn) 17
4.1.1鉆床夾具的典型結(jié)構(gòu)形式 17
4.1.2鉆床夾具的設(shè)計(jì)要點(diǎn) 17
4.2氣門搖桿軸支座專用鉆孔夾具總體結(jié)構(gòu)方案 19
4.3鉆模與夾具體的設(shè)計(jì) 19
4.3.1鉆模的設(shè)計(jì) 19
4.3.2夾具體設(shè)計(jì) 19
4.4夾具工作能力的計(jì)算 20
4.5使用操作說(shuō)明 20
5 夾具零件的三維模型 21
5.1 鉆、擴(kuò) MM孔夾具 21
5.2鉆2× MM孔夾具 23
結(jié)論 27
致謝 28
參考文獻(xiàn) 29
畢業(yè)設(shè)計(jì)（論文）知識(shí)產(chǎn)權(quán)聲明 30
畢業(yè)設(shè)計(jì)（論文）獨(dú)創(chuàng)性聲明 31