power press

A power press, often referred to as a punch press, is a machine designed to alter the size or shape of materials, typically sheet metal, by applying pressure through a die. The die's design dictates the final form of the workpiece. These machines consist of a punch, attached to a reciprocating ram, and a die clamped to a base.1

Power presses are driven by electric motors and use mechanisms like cranks, toggles, or cams to convert rotary motion into the ram's back-and-forth movement. They often incorporate a flywheel to store and deliver energy, reducing the motor's required capacity. Presses are integral to various metal forming processes, including shearing, blanking, forming, drawing, and bending, and can range from small workbench units to massive machines weighing hundreds of tons. Hydraulic presses, a type of press, use a confined liquid to generate large compressive forces for tasks like metal forming.123