Casting die
AssigneeAE Piston Products Limited
InventorGordon L. Allen
Life of this patent
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Abstract
The die for the production of piston blanks having high dimensional accuracy comprises an integral body and crown forming part with separate internal and pin boss bore cores and a single runner and feeder. Metal utilisation is greatly increased and fettling costs are greatly reduced.
Claims6
A gravity casting die for the production of piston blanks, the die comprising a single body portion having a generally cylindrical cavity, a crown forming portion fixed relative to the body portion, at least one aperture passing through the body portion for molten metal access into the cavity, molten metal guidance means associated with said at least one aperture, a feeder associated with the crown forming portion, gudgeon pin boss cores, said cores being slidably engagable into their required position and a removable internal core which when in position in the body portion defines a 3-dimensional, piston shaped cavity bounded by the surfaces of the body cavity, the crown portion, the pin boss cores and the internal core.
Dependencies are inferred from the claim text.