下軸的工藝及夾具設計【全套設計含CAD圖紙】,全套設計含CAD圖紙,工藝,夾具,設計,全套,cad,圖紙 摘 要 本設計是基于下軸零件的加工工藝規(guī)程及一些工序的專用夾具設計。下軸零件的主要加工表面是平面及槽系。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，本設計遵循先面后槽的原則。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槽系加工精度。基準選擇以下軸的輸入軸和輸出軸的支承孔作為粗基準，以結合面與兩個工藝孔作為精基準。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)工序中除個別工序外均用頂平面和工藝孔定位加工其他孔系與平面。夾具選用專用夾具，夾緊方式多選用氣動夾緊，夾緊可靠，機構可以不必自鎖。因此生產(chǎn)效率較高。適用于大批量、流水線上加工。能夠滿足設計要求。 關鍵詞：下軸類零件；工藝；夾具； ABSTRACT The design is based on the body parts of the processing order of the processes and some special fixture design. Body 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 box 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. Key words: Angle gear seat parts; fixture; II 目 錄 摘 要 II ABSTRACT III 第一章 加工工藝規(guī)程設計 1 1.1 零件的分析 1 1.1.1 零件的作用 1 1.1.2 零件的工藝分析 1 1.2 下軸加工的主要問題和工藝過程設計所應采取的相應措施 2 1.2.1 孔和平面的加工順序 2 1.2.2加工方案選擇 2 1.3 下軸加工定位基準的選擇 3 1.3.1 粗基準的選擇 3 1.3.2 精基準的選擇 3 1.4 下軸加工主要工序安排 3 1.5 機械加工余量、工序尺寸及毛坯尺寸的確定 5 1.6確定切削用量及基本工時（機動時間） 6 1.7 時間定額計算及生產(chǎn)安排 15 第2章 銑16開口槽夾具設計 17 2.1設計要求 17 2.2夾具設計 17 2.2.1 定位基準的選擇 17 2.2.2 切削力及夾緊力的計算 17 2.3定位誤差的分析 20 2.4夾具設計及操作的簡要說明 21 結 論 22 參考文獻 23 致　　謝 25 4