航空液压壳体深孔加工工艺研究

Processing Technology Research on Deep Hole in Aviation Hydraulic Shell

航空液压产品中的壳体类零件的主阀套孔具有大长径比的特点,该类零件材料主要是高强度铝合金,内孔加工属于比较典型的深孔加工,其尺寸公差、几何公差等要求严格,表面粗糙度值低,对加工刀具的结构有较多限制,这给零件的精加工带来很大的困难。通过研究壳体深孔加工的工艺路线安排、加工工艺参数及加工刀具选取等,经过镗削、研磨和珩磨等各种加工方式的多次试验,最终选择用铰削加工来保证壳体深孔加工精度要求,解决了十余种军工重点型号大尺寸液压壳体零件的加工瓶颈,对于同类壳体深孔加工具有借鉴意义。

Aviation hydraulic products in the shell parts of the main valve sleeve hole have the characteristic of large length to diameter ratio. The main parts material is high strength aluminum alloy, and the inner hole machining belongs to the typical deep hole processing. Because of the strict size and form tolerance, the surface roughness value is low, and the structure of cutting tool has more restriction while often bring great difficulty in parts of the finishing. After all kinds of boring, grinding, honing, and so on, all kinds of processing methods of test have been clone for many times, choose ream machining deep hole machining accuracy requirement. Ensure that the shell can solve more than ten kinds of military indus- try focuing on models of large size hydraulic shell parts processing bottleneck, and it has the significant reference for similar deep holes processing shell.