CAJ | 학술논문

　　针对离心式通风机中闭式叶轮通道的五轴数控粗加工，提出了一种用圆锥面截取叶轮流道的分层加工方法，该圆锥面由叶轮子午面内的直母线绕叶轮轴线回转形成，这种分层方法可以使每一截面的加工区域均由4条曲线围成，保证每一层刀具路径的形状相似。在此基础上，给出了适合流道分层加工的等参数环切和螺旋加工2种刀具路径规划方法。该方法简单、效率高，非常适合于通道类零件的粗加工。
　　침대리심식통풍궤중폐식협륜통도적오축수공조가공，제출료일충용원추면절취협륜류도적분층가공방법，해원추면유협륜자오면내적직모선요협륜축선회전형성，저충분층방법가이사매일절면적가공구역균유4조곡선위성，보증매일층도구로경적형상상사。재차기출상，급출료괄합류도분층가공적등삼수배절화라선가공2충도구로경규화방법。해방법간단、효솔고，비상괄합우통도류령건적조가공。
A new layered milling method ,using conical surface for layering the channel ,is presented for 5‐axis NC rough machining of centrifugal ventilator closed impeller channel .The conical surface is formed by rotating the straight line of blade on meridian plane around the impeller axis .T his layered method can make each processing region of conical section consist of four curves and have similar topology shape .Then ,the contour parallel tool path and the spiral tool path which are suitable for layered machining ,are described .This method is very suitable for rough machining of channel parts , and is also simple and efficient .