每齿进给量指的是多齿铣刀每旋转一个齿间角时，铣刀相对工件在进给方向上的位移。
高速切削试验表明：切削速度的提高和每齿进给量的减少有利于改善加工表面粗糙度。
The experiment showed that the high quality surface roughness was easy to obtain by increasing the cutting speed and decreasing the feed engagement.
通过试验，找出了切削深度、切削速度、每齿进给量等切削用量及切出角影响面铣刀寿命的规律。
Tests are conducted to find the rules how such cutting parameters as cutting depth, cutting speed and feedrate per blade as well as the cutting angle affect on the life of face mill.
文章首先以导出的锯痕深度公式为依据，说明每齿进给量与锯切表面光洁度两者之间确实是相互矛盾的。
According as formula of cutting surface mark deepness from educing, the paper explain that is really one another contradiction between tooth feed rate and cutting surface roughness.
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