POWDER COMPACTING METHOD OF HELICAL GEAR AND DEVICE THEREFOR

PROBLEM TO BE SOLVED: To easily execute powder compacting of a helical gear or a helical gear with a boss. SOLUTION: A projection 21 for engaging to a green compact is installed on the upper end of a lower punch and sliding (turning) of the lower punch and a green compact is restricted, in the time...

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Bibliographische Detailangaben
Hauptverfasser:	SHOBU TSUGINORI, MOTAI OSAMU
Format:	Patent
Sprache:	eng
Schlagworte:	CASTING MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER PERFORMING OPERATIONS POWDER METALLURGY PRESSES PRESSES IN GENERAL TRANSPORTING WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To easily execute powder compacting of a helical gear or a helical gear with a boss. SOLUTION: A projection 21 for engaging to a green compact is installed on the upper end of a lower punch and sliding (turning) of the lower punch and a green compact is restricted, in the time of raising the lower punch, a die 10 is turned synchronously to a twisting angle of tooth shape grooves. The green compact is not turned by being restricted with the lower punch of no- turning, on one side, because the die 10 is relatively lowered while turning, the green compact is released reasonably from screwing to the tooth shape groove 11 of the die, and it is drawn off smoothly.