POWDER METALLURGY PRESS DIE FOR MANUFACUTURING HELICAL GEAR

摘要

The present invention relates to a powder metallurgy press mold. More specifically, male spiral gear teeth are formed on an outer surface in a longitudinal direction; an upper punch is attached to a bottom; and a guide punch, including a bearing assembly attached to the upper surface, is rotated in a guide die including female spiral gear teeth formed on an inner surface such that the present invention is structurally simple and produces stable rotation due to a relatively large diameter of the guide punch. As the upper punch is not attached to the guide die, but is attached to a bottom of the guide punch to secure space; the present invention is capable of making easy the movement of a hopper during formation work.