Spherical pre-forging die for small heads of crankshafts

一种曲轴小头球形预锻模具

Abstract

本发明公开了一种曲轴小头球形预锻模具,主要包括上模、下模和位于上模和下模之间的小头型腔,型腔周边设置有由飞边桥部和飞边仓部所构成的飞边槽;所述小头型腔为球形,使得锻件材料流动合理,型腔充满,进而减少材料消耗,提高材料利用率,杜绝小头折纹,提高锻件合格率,从而使生产效益最大化。
The invention discloses a spherical pre-forging die for small heads of crankshafts. The spherical pre-forging die mainly comprises an upper die, a lower die and a small head cavity located between the upper die and the lower die, wherein a flash gutter comprising a flash land part and a flash cavity part is arranged on the periphery of the cavity; the small head cavity is spherical, so that a forging material flows reasonably, the cavity is filled, then the material consumption is reduced, the material utilization rate is increased, small head wrinkles are eliminated, the forging percent of pass is increased, and the production benefit is maximized.

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