The upper and lower plates or castings that constitute a The assembly of the upper and lower die shoes (punch and die holders), usually including the guide pins, guide pin bushings, and heel blocks. This assembly takes many forms, shapes, and sizes and is frequently purchased as a commercially available unit. Also, two (or, for a mechanical upsetter, three) machined dies used together during the production of a die forging.... More (punch and A block used as an adapter in order to permit the use of forging dies that otherwise would not have sufficient height to be used in the particular unit or to permit the use of dies in a unit where the shank sizes are different.). Also a plate or The forging operation in which metal is progressively formed to general desired shape and contour by means of an impression die (used when only one block operation is scheduled). upon which a A block used as an adapter in order to permit the use of forging dies that otherwise would not have sufficient height to be used in the particular unit or to permit the use of dies in a unit where the shank sizes are different. is mounted, functioning primarily as a base for the complete The machined recess in a die that gives the forging its shape. assembly. This plate or block is bolted or clamped to the A plate to which dies can be fastened; the assembly is secured to the top surface of a press bed. In press forging, such a plate may also be attached to the ram. or the face of the A machine tool with a stationary bed and a slide or ram that has reciprocating motion at right angles to the bed surface; the ram is guided in the frame of the machine. The main reciprocating member of a press, guided in the press frame, to which the punch or upper die is fastened..