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南京理工大學(xué)泰州科技學(xué)院 畢業(yè)設(shè)計說明書(論文) 作 者: 劉劍超 學(xué) 號： 05010125 系　部: 機械工程系 專 業(yè): 機械工程及自動化 題 目: 車床變速用撥叉加工工藝及關(guān)鍵工序工 裝設(shè)計 教授 龔光容 指導(dǎo)者： 評閱者： 2009 年 6 月 畢業(yè)設(shè)計說明書（論文）中文摘要 車床變速用撥叉是某企業(yè)產(chǎn)品的主要零件之一。于是需要設(shè)計關(guān)鍵工序的專用夾具及加工用組合機床，而且夾具采用液壓驅(qū)動，組合機床采用液壓滑臺。工藝設(shè)計以保證質(zhì)量穩(wěn)定、生產(chǎn)可靠為原則。對工件進(jìn)行加工時，為了保證加工要求，首先要使工件相對于刀具及機床有正確的位置，并使這個位置在加工過程中不因外力的影響而變動。為此，在進(jìn)行機械加工前，首先要將工件裝夾好。用夾具裝夾工件有下列優(yōu)點：能穩(wěn)定地保證工件的加工精度；能提高勞動生產(chǎn)率；能擴大機床的使用范圍；能降低成本。 關(guān)鍵詞 撥叉 工藝設(shè)計 機床 加工過程 畢業(yè)設(shè)計說明書（論文）外文摘要 Title Variable-speed lathe processing with fork and key process equipment design Abstract Variable speed lathe with a fork is the product of one of the main parts. So the key processes necessary to design a special fixture and the combination of processing machine tools, fixtures and the use of hydraulic drives, hydraulic slide combination of the use of Taiwan machine tool. Process design to ensure stable quality, reliable production of principle. Processing of the workpiece, the processing requirements in order to ensure, first of all to the workpiece and the machine tool relative to a correct position, and this location is not in the process due to the impact of external changes. To this end, during the pre-machining the first workpiece to a good setup. Workpiece clamping fixture with the following advantages: can guarantee the stability of the machining accuracy of workpiece; will increase labor productivity; to expand the use of machine tools; to reduce costs. Keywords fork Process design Machine tool Process