A method for material forming uses a movable tool and a drive unit the method including moving the drive unit to provide kinetic energy to the tool, for the tool to strike a work material, so as to form the work material the method including providing an impact head between the drive unit and the movable tool, and providing the kinetic energy to the tool by the drive unit striking the impact head, the impact head (extending in the direction of the stroke from an impact end to a base region, where the base region is closer to the tool than the impact end. The method includes arranging the impact head so that the impact end has laterally, in relation to the direction of the stroke, a smaller extension than the base region.

A workpiece processing apparatus comprises a base member formed with a hydraulic chamber fillable with liquid, a punch and a piston. The hydraulic chamber has a workpiece processing chamber and a hydraulic-pressure generation chamber. The punch is movable between an initial position which is apart from the workpiece processing chamber and a received position at which the punch is partially received in the workpiece processing chamber. When the punch is moved from the initial position to the received position, the punch presses the workpiece into the workpiece processing chamber. The piston is partially received in the hydraulic-pressure generation chamber and receives a pressing force directed into the hydraulic-pressure generation chamber in a course of movement of the punch from the initial position to the received position, and the piston is moved in accordance with the pressing force and increases hydraulic pressure of the liquid.

A method for material forming and/or cutting by means of a tool and a drive unit. The method includes moving the drive unit to provide kinetic energy to the tool, for the tool to strike a work material, so as to form and/or cut the work material when the tool is operatively disassociated from the drive unit before the tool strikes the work material.