【正文】 0 軸類零件的定位基準(zhǔn)與裝夾方法 ........................................................................... 12 擬定加工零件的工藝路線 ............................................................................................ 13 5 毛坯尺寸、工序尺寸和機(jī)械加工余量的確定 ....................................................................... 17 工序尺寸及公差的確定 ................................................................................................ 17 設(shè)備及工藝裝備的確定 ................................................................................................ 20 切削用量及工時(shí)定額的確定 ........................................................................................ 20 6 鉆 4φ 22 孔專用夾具設(shè)計(jì) ..................................................................................................... 26 指出加工過程中的問題 ................................................................................................ 26 機(jī)床夾具的作用 ....................................................................................................... 26 鉆床夾具的類型 ....................................................................................................... 26 原創(chuàng)通過答辯畢業(yè)設(shè)計(jì)說明書論文 194535455 優(yōu)秀畢業(yè)設(shè)計(jì)（論文） 通過答辯 鉆夾具選擇的原則 ................................................................................................... 27 夾具的設(shè)計(jì) .................................................................................................................... 27 定位基準(zhǔn)的選擇 ....................................................................................................... 27 定位方案的確定 ....................................................................................................... 28 定位元件的確定 ....................................................................................................... 28 切削力及夾緊力計(jì)算 ............................................................................................... 28 鉆套、連接元件及鉆模板的設(shè)計(jì) ............................................................................ 29 夾具體的設(shè)計(jì) ........................................................................................................... 30 夾具精度分析 ........................................................................................................... 30 夾具設(shè)計(jì)及操作的簡要說明 ................................................................................... 30 7 車曲軸軸頸專用夾具設(shè)計(jì) ........................................................................................................ 31 問題的指出 .................................................................................................................... 31 車夾具的選擇與設(shè)計(jì) ..................................................................................................... 31 夾具設(shè)計(jì) ........................................................................................................................ 31 選擇定位基準(zhǔn) .......................................................................................................... 31 確定定位元件 .......................................................................................................... 31 夾緊裝置的設(shè)計(jì)要求 .............................................................................................. 32 夾具體的設(shè)計(jì) .......................................................................................................... 32 夾具精度分析 .......................................................................................................... 33 夾具設(shè)計(jì)及操作的簡要說明 ................................................................................... 33 8 結(jié)論與展望 ............................................................................................................................... 34 結(jié)論 ............................................................................................................................... 34 不足之處及未來展望 ................................................................................................... 34 畢業(yè)設(shè)計(jì)小結(jié) ............................................................................................................................... 35 致謝 ............................................................................................................................................... 36 參考文獻(xiàn) ....................................................................................................................................... 37 原創(chuàng)通過答辯畢業(yè)設(shè)計(jì)說明書論文 194535455 優(yōu)秀畢業(yè)設(shè)計(jì)（論文） 通過答辯 1 緒論 本課題的研究內(nèi)容 和 意義 機(jī)械的加工工藝及夾具設(shè)計(jì)是在完成了大學(xué)的全部課程之后，進(jìn)行的一次理論聯(lián)系實(shí)際的綜合運(yùn)用，使我對專業(yè)知識 、技能有了進(jìn)一步的提高，為以后從事專業(yè)技術(shù)的工作打下基礎(chǔ)。 machining processing。 關(guān)鍵詞： 曲軸；加工工藝；工序；專用夾具 原創(chuàng)通過答辯畢業(yè)設(shè)計(jì)說明書論文 194535455 優(yōu)秀畢業(yè)設(shè)計(jì)（論文） 通過答辯 Abstract This paper is the design of line machining technology of the three dimension modeling and parts of Crankshaft parts. According to desire, the author designed the fixture of the workpiece. Three dimension modeling described the process of the workpiece. Then auto generated the puter program according to the modeling. The Crankshaft ponents as a class of axis, its main processing surface are the plane and the cylindrical. According to the machinefinishing technological requirement, after following the first surface then the hole principle, and is clear about the hole and the plane processing divides the rough machining and the precision work stage guarantees the working accuracy. The datum choice takes the cylindrical surface by the support surface, takes the fine datum by the support two center holes, had determined in its processing39。 在零件的夾具設(shè)計(jì)中，主要是根據(jù)零件加工工序要求，分析應(yīng)當(dāng)限制的自由度的數(shù)量，進(jìn)而根據(jù)零件的表面特征選定定 位元件，再分析所選定位元件能否限定應(yīng)限自由度。按照機(jī)械加工工藝要求，需遵循先面后孔的原則，并且為了保證加工精度將孔與平面的加工明確劃分成粗加工和精加工階段。 曲軸作為軸類零件，其主要加工表面是外圓及端面。 原創(chuàng)通過答辯畢業(yè)設(shè)計(jì)說明書論文 194535455 優(yōu)秀畢業(yè)設(shè)計(jì)（論文） 通過答辯