摘要
针对某型航空发动机燃油喷嘴结构尺寸微小、材料硬度较高、切削加工困难等问题,介绍了微细电解加工的原理和实验装置,制备了微细棒状工具电极和三角形钩状成形电极,利用分层电解铣削进行粗加工快速去除工件多余材料,再利用环形扫描电解铣削进行旋流室全锥面的精加工,实现了发动机喷嘴微小尺寸旋流室的微细电解加工成形,达到加工精度和表面质量要求。研究表明,微细电解铣削加工是加工金属材料微小结构的有效可行的方法。
Aimed at fuel injection nozzles of a type of aero engine are difficult to cut with traditional machining methods because of the following problems of micro-sized and hard material,the principle and set-up of electrochemical micromachining and device were introduced. A micro-rod tool electrode and a triangle-hooked electrode were made. Rough machining process with layered electrochemical milling was used to remove remained material of the part,and finish machining process with swirl-scanning electrochemical milling was applied to machine the full surface of the swirl chamber. The micro-sized swirl chamber with high precision and good surface roughness of an aero engine nozzle was achieved with electrochemical micromachining technology. Study results show that electrochemical milling micromachining is a feasible and effective method to machine micro-structures of metal parts.
出处
《机床与液压》
北大核心
2016年第7期66-68,共3页
Machine Tool & Hydraulics
基金
"十二五"兵器预研支撑基金项目(62201070712)
陕西省科技厅项目(2014JM2-5072
2014SZS20-Z02
2014SZS20-P06)
陕西省教育厅项目(2013JK1013
13JS043)
关键词
燃油喷嘴
旋流室
微细电解加工
微细电极
Fuel injection nozzle
Swirl chamber
Electrochemical micromachining
Micro electrode
