Metal deforming – By use of closed-die and coacting work-forcer – Forcing work into or within closed die; e.g. – forging
Patent
1982-09-24
1985-01-15
Combs, E. Michael
Metal deforming
By use of closed-die and coacting work-forcer
Forcing work into or within closed die; e.g., forging
10 57, 10 59, 72356, 72361, B21G 312, B21G 316, B21K 172
Patent
active
044932022
ABSTRACT:
In a railroad spike forging machine of the type comprising a steel stock pointing roller assembly which longitudinally feeds pointed spike blanks along a centerline to a head forming station, a main die of hardened tool steel having a die zone defined between its leading edge and an intermediate point of said first longitudinal dimension, and a wipe zone defined between said intermediate point and the trailing edge of the die by a transversely extending entrance wall surface to the die zone, whereby a transverse wiping of the channel is enabled in said wipe zone. Further, a sensing means generates position signals from the rotation of a pointer roller, and a spike positioning mechanism comprises a first hydraulic cylinder operable transversely to extend a stop mechanism in response to a first position signal, thereby to stop forward motion of a spike blank at an appropriate distance downstream of the die leading edge. A spike ejection mechanism comprises a second hydraulic cylinder operable transversely to extend a side wiping assembly across the wipe zone in response to a second position signal.
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Combs E. Michael
Olsen Warren E.
Semmes David H.
Stafford Rail Products, Inc.
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