A new method for processing the hexagonal hole in the axle by hot backward extrusion on the friction press was proposed,which threw away the traditional milling or slotting method.

• 对轮轴上六方孔的加工提出了摒弃传统的铣插加工方法,采用在摩擦压力机上进行热反挤压成型,并就可能出现的缺陷及防止措施进行了探讨。