螺旋槽成形铣削时普遍存在根切现象，在很大程度上影响到加工精度和几何形状。

Usually, there exist undercutting phenomena in helical groove milling process, which affect the accuracy and geometrical shape greatly.

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螺旋锥齿轮副的成形法大轮，利用合适的成形铣刀，在通用的立式加工中心上，可以实现热处理后硬齿面的高速铣削。

For spiral bevel gears' formate gear, using proper figurate cutting tool and generic CNC machining center, the gear's hard tooth-surface can be milled with high speed.

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在圆柱螺旋曲面的盘形铣刀成形铣削加工工艺中，工件上的螺旋曲面实质上就是盘形铣刀切削刃回转面螺旋进给运动所形成的包络。

In the forming technique of cylindrical spiral curved surfaces, the contour of workpiece is virtually the result that disk shaped milling tools feed into the workpiece and move around its axis.

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