摘要
为了提高开式整体叶盘的粗加工稳定性,在粗加工阶段,提出采用将自由曲面蜕变为直纹面的方式简化开式整体叶盘通道开槽加工的难度,实现稳定切削。讨论了直纹面逼近自由曲面的算法,提出了一种新的刀轴矢量计算方法,并基于直纹面给出了开式整体叶片通道四坐标侧铣粗加工数控编程方法,规划出了无干涉的刀位轨迹。实例验证表明,采用该方法可快速有效地实现开式整体叶盘的开槽粗加工,并可提高开式整体叶盘加工中的稳定性。
In order to improve the stability of slot rough machining for open blisks, the ruled surface was used to approximate the freeform blade surface, which can reduce the computational complexity of slot rough machining for open blisks with freeform blade surfaces. The method of using a ruled surface to approximate the freeform surface was discussed. A new algorithm for generating tool axis vector was presented, and the 4-axis NC side milling method was further developed. The roughing paths planed by the new method are collision-free with surrounding surfaces and obstacles. The demonstration shows that the side rough milling method can improve the cutting stability for open blisks greatly.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2007年第16期1917-1920,共4页
China Mechanical Engineering
基金
西北工业大学青年教师创新基金资助项目(M016216)
关键词
整体叶盘
开槽
侧铣
粗加工
自由曲面
blisk
slot machining
side milling
rough milling
freeform surface
