采用成形铣削加工叶轮型面，保证了加工精度，提高了生产效率。
The application of process of vane wheel profile forming can ensure the machining accuracy and improve the productive efficiency.
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.
柴油机气缸体主轴承盖安装定位面的成形铣削是一种能达到较高效率和质量的工艺方法。
The form milling on the fixing orientating face of the main bearing cap of cylinder blocks is a good maching method which can get a high efficiency and good quality.
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