Increasing quantities, a higher level of accuracy and higher material strengths – the requirements in sheet metal forming are clearly defined.

A knuckle joint press is a press machine that uses a knuckle joint mechanism to generate a high force over a short stroke. The knuckle joint mechanism is a four-bar linkage that consists of two connecting rods and a knuckle pin. When the connecting rods are driven, the knuckle pin is forced to move in a circular path, which causes the press ram to descend.

Knuckle joint presses are typically used for high-speed, high-precision metal forming applications, such as blanking, piercing and coining. They are also used in some plastic forming and composite materials forming applications.

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