齒爪式21窄機(jī)體加工工藝及（鉆孔）夾具設(shè)計(jì)（全套設(shè)計(jì)含CAD圖紙）,齒爪式,21,機(jī)體,加工,工藝,鉆孔,夾具,設(shè)計(jì),全套,cad,圖紙 I 四川職業(yè)技術(shù)學(xué)院 Sichuan Vocational and Technical College 畢業(yè)設(shè)計(jì)（論文） 題 目 齒爪式 21 窄機(jī)體加工工藝及（鉆孔）夾具設(shè)計(jì) 所屬系部 機(jī)械工程系 所屬專業(yè) 機(jī)械設(shè)計(jì)與制造 所屬班級 學(xué) 號 學(xué)生姓名 指導(dǎo)教師 起訖日期 2012.092013.04 四川職業(yè)技術(shù)學(xué)院教務(wù)處制 3 摘 要 齒爪式 21 窄機(jī)體零件零件的主要加工表面是平面及孔系。一般來說，保證平面的 加工精度要比保證孔系的加工精度容易。因此，本設(shè)計(jì)遵循先面后孔的原則。并將孔 與平面的加工明確劃分成粗加工和精加工階段以保證孔系加工精度。基準(zhǔn)選擇以變速 箱箱體的輸入軸和輸出軸的支承孔作為粗基準(zhǔn)，以頂面與兩個(gè)工藝孔作為精基準(zhǔn)。主 要加工工序安排是先以支承孔系定位加工出頂平面，再以頂平面與支承孔系定位加工 出工藝孔。在后續(xù)工序中除個(gè)別工序外均用頂平面和工藝孔定位加工其他孔系與平面。 支承孔系的加工采用的是坐標(biāo)法鏜孔。整個(gè)加工過程均選用組合機(jī)床。夾具選用專用 夾具，夾緊方式多選用氣動夾緊，夾緊可靠，機(jī)構(gòu)可以不必自鎖，因此生產(chǎn)效率較高， 適用于大批量、流水線上加工，能夠滿足設(shè)計(jì)要求。 本文是對齒爪式 21 窄機(jī)體零件加工應(yīng)用及加工的工藝性分析，主要包括對零件圖 的分析、毛坯的選擇、零件的裝夾、工藝路線的制訂、刀具的選擇、切削用量的確定、 加工工藝文件的填寫。選擇正確的加工方法，設(shè)計(jì)合理的加工工藝過程。此外還對零 件的兩道工序的加工設(shè)計(jì)了專用夾具. 機(jī)床夾具的種類很多，其中，使用范圍最廣的通用夾具，規(guī)格尺寸多已標(biāo)準(zhǔn)化， 并且有專業(yè)的工廠進(jìn)行生產(chǎn)。而廣泛用于批量生產(chǎn)，專為某工件加工工序服務(wù)的專用 夾具，則需要各制造廠根據(jù)工件加工工藝自行設(shè)計(jì)制造。本論文夾具設(shè)計(jì)的主要內(nèi)容 是設(shè)計(jì)鉆孔夾具。 關(guān)鍵詞：齒爪式 21 窄機(jī)體，加工工藝，加工方法，工藝文件，夾具 4 Abstract 21 double rotor body parts parts of the main plane of the surface and pore system. In general, the plane guarantee processing precision than that of holes machining precision easy. Therefore, this design follows the surface after the first hole principle. Plane with holes and the processing clearly divided into roughing and finishing stages of holes to ensure machining accuracy. Datum selection to the gearbox input shaft and the output shaft of the supporting hole as a rough benchmark, with top with two holes as a precision technology reference. Main processes arrangements to support holes for positioning and processing the top plane, and then the top plane and the supporting hole location hole processing technology. In addition to the follow-up processes individual processes are made of the top plane and technological hole location hole and plane processing. Supported hole processing using the method of coordinate boring. The whole process of processing machine combinations were selected. Selection of special fixture fixture, clamping means more choice of pneumatic clamping, clamping reliable, institutions can not be locked, so the production efficiency is high, suitable for large batch, line processing, can meet the design requirements. This article is on the 21 double rotor body parts processing application and processing technology and analysis, including the parts of the plan, the choice of blank, the clamping, the craft route making, tool selection, the determination of cutting conditions, processing documents. Choose the correct processing methods, design the reasonable process. In addition to the parts of the two process designing special fixture. Machine tool fixture of many kinds, among them, the most widely used common fixture, size specifications have been standardized, and a professional production plant. While widely used in batch production, specially for a workpiece processing services for the fixture, it needs each factory according to workpiece machining technology to design and manufacture. In this paper, the fixture design is the main content of the design truck center hole clamp. Key words: 21 double rotor body, processing technology, processing method, process documentation, fixture 5 目 錄 摘 要 2 ABSTRACT 3 1 序言 6 2 零件的分析 8 2.1 零件的工藝分析 8 3 零件的工藝要求 8 3 工藝規(guī)程設(shè)計(jì) 9 3.1 加工工藝過程 9 3.2 確定各表面加工方案 9 3.2.1 影響加工方法的因素 9 3.3 加工方案的選擇 10 3.3 確定定位基準(zhǔn) 10 3.2.1 粗基準(zhǔn)的選擇 10 3.2.1 精基準(zhǔn)選擇的原則 11 3.4 工藝路線的擬訂 11 3.4.1 工序的合理組合 12 3.4.2 工序的集中與分散 12 3.4.3 加工階段的劃分 13 3.4.4 加工工藝路線方案的比較 13 3.5 零件的偏差，加工余量，工序尺寸及毛坯尺寸的確定 15 3.5.1 毛坯的結(jié)構(gòu)工藝要求 15 3.5.2 零件的偏差計(jì)算 16 3.6 確定切削用量及基本工時(shí)（機(jī)動時(shí)間） 17 3.7 時(shí)間定額計(jì)算及生產(chǎn)安排 20 4 鉆孔夾具設(shè)計(jì) 22 41 研究原始質(zhì)料 22 42 定位基準(zhǔn)的選擇 22 6 43 切削力及夾緊力的計(jì)算 22 44 誤差分析與計(jì)算 23 4.5 零、部件的設(shè)計(jì)與選用 24 4.5.1 定位銷選用 24 4.5.2 夾緊裝置的選用 24 4.5.3 鉆套、襯套、鉆模板設(shè)計(jì)與選用 25 46 夾具設(shè)計(jì)及操作的簡要說明 26 總結(jié) 27 參考文獻(xiàn) 28 致 謝 29