B - Operations – Transporting – 21 – B
Patent
B - Operations, Transporting
21
B
78/1
B21B 45/02 (2006.01) B21K 1/10 (2006.01) B21K 21/16 (2006.01)
Patent
CA 1080520
AXLE SPINDLE FORMING APPARATUS AND METHOD ABSTRACT OF THE DISCLOSURE Apparatus and a method disclosed for forming an axle spindle from a hollow axle blank incorporate a hollow punch hav- ing a metallic body with an inner work surface defining a work opening and a mandrel fixed within the work opening projecting toward an open end thereof from a closed end of the opening. During forming, the punch is moved relative to the axle blank in the direction the mandrel projects so that the mandrel is re- ceived within the hollow axle blank as the work surface of the punch body forms the blank about the mandrel to provide a spin- dle. Preferably, several punches of this type are utilized to complete the spindle forming process on the axle blank. Each punch preferably has an elongated annular shape with a round in- ner work surface and a round outer surface on the mandrel so that the formed spindle is of a round shape. One of the punches which causes outward material movement has an undercut on its mandrel to facilitate punch withdrawal. The forming is best performed by a hot forging operation on a heated axle blank end and the hollow punch body has a sufficient length so it extends past the heated portion of the blank end before deformation begins. A pair of co- operable gripper dies include gripping portions for locating the axle blank during the forging and define an elongated opening with a round cross section for slidably receiving and guiding the punch body during the movement that forges the axle spindle. A lubrication passage in the punch supplies a lubricant between the punch body work surface and the mandrel.
296028
Dutton John P.
Zawacki Joseph H.
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