Apparatus for mechanical machining by plastic deformation or for assembling a pair of components, and relative machine tool comprising such an apparatus

Machine tool for mechanical machining by plastic deformation comprising at least one apparatus for mechanical machining by plastic deformation, said apparatus comprising:

• a support unit configured to support a workpiece;
• a first punch and a second punch opposite each other and arranged on opposite sides of the support unit, the first punch and the second punch being movable from and toward the support unit along a direction of action to switch between an operating position in which exert compression forces on the workpiece adapted to plastically deform the workpiece and a resting position in which are spaced from the support unit, said compression forces generating reaction forces opposite to the compression forces;
• actuation members adapted to control the movement of the first punch and of the second punch from and toward the support unit along the direction of action;
• a floating element, movable along the direction of action, adapted to support the first punch and the second punch from opposite sides of the support unit along the direction of action, said floating element being configured to receive said reaction forces
• wherein the actuation members comprise first actuation members configured to move the floating element along the direction of action, and second actuation members configured to move at least one of the first punch and the second punch along the direction of action with respect to the floating element.

Apparatus for mechanical machining by plastic deformation, comprising:

• a support unit configured to support a workpiece;
• a first punch and a second punch opposite each other and arranged on opposite sides of the support unit, the first punch and the second punch being movable from and toward the support unit along a direction of action to switch between an operating position in which exert compression forces on the workpiece adapted to plastically deform the workpiece and a resting position in which are spaced from the support unit, said compression forces generating reaction forces opposite to the compression forces;
• actuation members adapted to control the movement of the first punch and of the second punch from and toward the support unit along the direction of action;
• a floating element, movable along the direction of action, adapted to support the first punch and the second punch from opposite sides of the support unit along the direction of action, said floating element being configured to receive said reaction forces;
• wherein the support unit comprises a mould in which the workpiece can be inserted, the first punch and the second punch being configured to exert said compression forces on the workpiece to plastically deform the workpiece against the mould;
• wherein at least one of the first punch and the second punch comprises a counter-mould configured to couple with the mould of the support unit when the first and the second punch are in the operating position.