Based on the shift analyses of CATT cylinder gear, the paper dlscusses the condition on wh ich CATT cylinder does not interfere with its tooth flank s cur-vature,and introduces the adjusting formula for cutter head radius.

• 本文通过对CATT齿轮径向变位原理的分析，论述了CATT齿轮在啮合过程中不发生曲率干涉的条件，从而得出了刀盘半径的调整公式。