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空氣壓縮機氣缸體加工工藝及半精銑底面夾具設計

摘  要

本設計是基於空氣壓縮機氣缸體零件的加工工藝規程及▲一些工序的專用夾具設∞計。空氣壓縮機氣缸體零件的主要加工表面是平面ξ　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，本設計遵循先面後孔的原則。並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。基準選擇以空氣壓縮機氣缸體的輸入軸和輸出軸的支承孔作為粗∩基準，以頂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。在後續工序中除個①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法鏜孔。整個加工過程均選用組合機床。夾具選用專用夾卐具，夾緊※方式多選用手動夾緊，夾緊可靠，機構可以不必自鎖，因此生產效率↙較高，適用於大批量、流水線∏上加工，能夠滿足設計」要求。

關鍵詞：空氣壓縮機氣缸體類零件；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: box type parts process; fixture;