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US 4,907,436 AGranted
Step forging press
AssigneeEfco, Inc.
InventorMyron I. Korytko
Life of this patent
Estimating the term…
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AssigneeEfco, Inc.
InventorMyron I. Korytko
Estimating the term…
A forging press comprising a base with a pressure roller mounted in spaced relation to the base and in conjunction with the latter defining a pressure zone, with a mechanism for conveying work between the base and the roller through the zone. The work conveying mechanism includes a plurality of discrete generally relatively movable die segments coacting with a confining frame, for maintaining the die segments in assembled but movable relation relative to one another, and providing for the aforesaid movement responsive to pressure applied to the die segments by the roller and the formation or step forging by the die segments of an associated work blank into a produced part, during passage of the mechanism and the work blank through the zone. Each die segment includes a roller pressure end and a molding end, and a pressure transmitting insert movably coacts with the roller pressure end of each die segment, and provides for mating relation of the insert with the roller, during movement of the work through the zone, whereby the part is generally smoothly forged from the work blank into finished to close to finished condition.
A forging press comprising a base, a pressure roller spaced from said base and in conjunction with the latter defining a pressure zone, means for conveying work between said base and said roller through said zone, said means including a plurality of discrete die segments coacting with confining means for confining said die segments and providing for formation by said die segments of an associated work blank into a produced part during passage through said zone, said die segments including a roller pressure end and a molding end, and means on each die segment movably coacting with said roller pressure end and having a concave surface thereon adapted for disposal in confronting relation with said roller and movably coacting with said roller pressure end, and adapted for generally complementary surface-to-surface mating relation with the confronting convex surface of said roller during movement of said work through said zone, whereby the part is smoothly forged from the associated work blank, said roller having a diameter which is larger as compared to the dimension of the defining chord of said concave surface of the last mentioned means.
A forging press comprising a base, a pressure roller spaced from said base and in conjunction with the latter defining a pressure zone, means for conveying work between said base and said roller through said zone, said means including a plurality of discrete die segments coacting with confining means for confining said die segments and provided for formation by said die segments of an associated work blank into a produced part during passage through said zone, each of said die segments including a roller pressure end and a molding end, and means on each die segment movably coacting with said roller pressure end and having a concave surface thereon adapted for disposal in confronting relation with said roller and movably coacting with said roller pressure end, and adapted for generally complementary surface-to-surface mating relation with the confronting convex surface of said roller during movement of said work through said zone, whereby the part is smoothly forged from the associated work blank, said roller having a diameter which is larger as compared to the dimension of the defining chord of said concave surface of the last mentioned means, and wherein said roller is mounted in a housing, and including tie rod means coacting between said housing and said base for resisting movement of said housing and roller away from said base during movement of the work through said zone, means for adjusting the permissible position of said housing and roller relative to said base and upon said adjustment providing for slack-free coaction of said tie rod means to said base and to said housing in the adjusted position of the roller and housing with respect to the base, and wherein said adjusting means comprises a movable wedge mechanism for selectively coacting between said base and said tie rod means for maintaining a tight relationship between the tie rod means and said base in any adjusted position of said housing and roller relative to said base, and wherein said wedge mechanism comprises a movable wedge member operative to move reciprocally, a wedge adjusting platen secured to said tie rod means, and a wedge block mounted on said platen and coacting with said wedge member for forcing said platen outwardly relative to said base upon predetermined movement of said wedge member with respect to said wedge block, thus tightening said tie rod means relative to said housing and roller and said base.
Dependencies are inferred from the claim text.