Sheet Metal Stamping Simulation

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.

Source: The OHIO State University

A press has a press frame, a bolster plate and a ram. The bolster plate (or bed) is a large block of metal upon which the bottom portion of a die is clamped; the bolster plate is stationary. Large presses (like the ones used in the automotive industry) have a die cushion integrated in the bolster plate to apply blank holder forces. This is necessary when a single acting press is used for deep drawing. The ram is also a solid piece of metal that is clamped to the top portion of a (progressive) stamping die and provides the stroke (up and down movement). This action causes the die to produce parts from the metal being fed through it.

Source: Wikipedia