求翻译：直齿轮轴的加工是通过车床、铣床等设备经过一定的工序来完成的，它要求的加工精度比较高，要先对工件进行粗加工，再经过半精加工得到半成品，最后再经过精加工，使工件达到技术要求的精度。该零件加工工序复杂，如果加工前有了好的工艺设计，不仅可以完成各项加工要求和需要，保证加工精度，还可以事半功倍，大大的提高加工效率，有效降低加工成本。是什么意思？

Gear shaft machining lathes, milling machines and other equipment after a certain process to complete, it requires relatively high machining accuracy, the workpiece first roughing, semi-finished products after the semi-finishing, and finally after finishing so that the workpiece to the accuracy of t

Spur gear shaft through the processing is turning, milling, and other equipment after a%2