开式整体叶盘通道侧铣粗加工技术的研究  

A Study of the Rough Milling Technique of Blisk-tunnel

作　　者：任军学[1] 田卫军[1] 田荣鑫[1] 姜振南[1] 

机构地区：[1]西北工业大学现代设计与集成制造技术教育部重点实验室。西安710072

出　　处：《机械科学与技术》2008年第10期1220-1224,共5页Mechanical Science and Technology for Aerospace Engineering

基　　金：航空科学基金项目(2007ZE53061);国家科技支撑计划项目(2008BAF32B10)资助

摘　　要：整体叶盘从锻造毛坯到最终零件加工成型,需要切除大量的多余材料。本文提出了一种开式整体叶盘通道区域五坐标粗加工刀具轨迹规划方法。该方法通过生成整体叶盘薄壁叶片的直纹包络面,以确定叶盘通道粗加工区域的边界轮廓;基于直纹面五轴侧铣加工刀具轨迹双点偏置生成方式,利用投影法规划开式整体叶盘通道区域粗铣加工的刀心点轨迹与刀轴矢量方向。加工实践表明,开式整体叶盘的粗加工效率提高30%以上,同时,显著优化了后续半精加工和精加工工序的环境。In this study, attention is focused on the rough milling of aeroengine blisk-tunnel. Generally, a big portion of the raw materials need to be removed by roughing before the finishing process can be performed. The ruled surface is used to approximate the freeform surface of blades, and the boundary contour of the roughing region is determined. Then based on the double point offset method used for flank milling of ruled surface, the tool center paths and the tool axis paths for 5-axis roughing blisk tunnel are generated. Our method can improve the machining effi- ciency by about 30%, and the environment of sequential semi-finishing and finishing is optimized greatly.

关 键 词：开式整体叶盘 直纹面 刀具轨迹生成 

分 类 号：V261[航空宇航科学与技术—航空宇航制造工程]