Patent ID: 6772819
Filing Date: 2004-08-10
Classification: B22D

Abstract:
A casting machine for producing an as-cast product in horizontally split metal molds that can be closed to define a cavity and by pouring a molten metal from a holding furnace into the cavity, comprising:a metal drag held horizontally at a fixed position; a plurality of upwardly-facing cylinders disposed around the metal drag and mounted on a floor or a base, each cylinder having a cylinder rod that extends upwardly and retracts; and a cope die base mounted for vertical movement on the distal ends of the cylinder rods of the upwardly-facing cylinders for horizontally holding a metal cope at a position above the metal drag so that the metal cope is mated with the metal drag to define the cavity when the cope die base is lowered by the upwardly-facing cylinders; detecting means for detecting vertical displacements of the metal cope at horizontally separate points from the metal drag; calculating means electrically coupled to the detecting means for calculating a displacement differential between the displacements of the meal cope at the horizontally separate points; and means for adjusting the extension of the cylinder rods to cancel the displacement differential to horizontally hold the metal cope based on the displacement differential from the calculating means.