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本文提出一种用曲线代替增大分度齿形角渐开线作端面齿形的新型插齿刀。该插齿刀的铲形齿形是渐开线，理论上无齿形误差，可加大前后角来改善插齿刀的切削性能，而不会对齿形精度产生影响。
In this paper, a new type of gear shaper with curved profile instead of increasing involute of split profile angle for end profile is proposed. The shaper tooth profile is involute involute, in theory, no tooth-shaped error, can increase the front and rear corners to improve shaper cutter cutting performance, and will not affect the accuracy of the profile.