火箭喷管等倾角螺旋槽铣削加工中刀具干涉分析

为解决具有多种母线轮廓的喷管外表面上铣削加工等倾角螺旋槽（斜航线）的难题，研究和开发了专用的六轴控制、四轴联动的数控机床和专门的数据处理系统，当用片铣刀进行铣槽加工时，由于是用直线段包络斜航线，存在刀具干涉问题；刀具干涉会引起螺旋槽长度方向和高度方向上的两种误差，因此对刀具干涉问题进行了系统的分析和研究，并提出了一种选择片铣刀直径的计算依据。

Analysis of cutter interference on milling loxodrome grooves on rocket nozzle

There are two kinds of the cutter interference errors while milling the loxodrome grooves on the rocket engine nozzle with the four axis simultaneous move CNC milling machine. One is the error on the direction in the length of the loxodrome,and the other is the error on the height direction. Both of them are analyzed in this paper. A criterion is developed for selecting the cutter diameter in order to decrease the interference error.All of the conclusions have been proved feasible through the manufacture progress.