FIELD: technological processes, metal working.
SUBSTANCE: invention is related to metal plastic working and may be used to manufacture parts of gear type by means of die forging. Billet is produced with polyhedral central opening, which has number of facets same as number of gear teeth. Specified billet is produced by extrusion in matrix. Matrix has internal contour of gear teeth. Angles of polyhedral profile of billet opening are located in axes that pass through the centre of gear teeth. Then closed upsetting of produced billet is carried out in holder. Holder is arranged with the possibility of its installation in central polyhedral opening of billet with gap to provide for separate flowing of billet metal inside and outside in process of closed upsetting.
EFFECT: reduced number of operations and simplified design of used technological accessories.
3 dwg, 1 ex
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