Abstract: A rotary cutting tool comprises a rotary die cylinder having an axis of rotation, a pair of sides and a cylindrical surface, a die plate positioned around the cylindrical surface of the die cylinder and rigidly attached to the die cylinder at a first location, and an adjustable slide assembly operatively connecting the die plate to the die cylinder at a second location, and slidable with respect to the die cylinder between a retracted position and an extended position. The adjustable slide assembly is slidable along either a first direction around the axis of rotation of the die cylinder or a second direction parallel to the axis of rotation of the die cylinder. Adjustment of the adjustable slide assembly adjusts the position of the die plate with respect to the cylinder. The cylinder may be formed as a single piece assembly or as a first piece and a bar attached to the first piece. The bar can be machined to define in combination with the first piece the cylindrical surface.

Abstract: A rotary cutting tool with easy to adjust rotary die plates comprises a rotary die cylinder, a die plate adjustably mounted to the rotary die cylinder, an external eccentric mounted on the rotary die cylinder having a first axis of rotation with respect to the cylinder and having a central opening offset from the first axis, and an internal eccentric mounted in the central opening. Rotation of the external eccentric urges the internal eccentric to move with respect to the cylinder, and the die plate moves in response to motion of the internal eccentric.