Adjustable coupling for a stamping and forming tool as well as stamping and/or forming machine with adjustable coupling

An adjustable coupling for a stamping and forming tool for connecting a stamp with a drive ram so that a force transfer from the drive ram to the stamp can take place such that the stamp causes a stamping and/or forming process on a workpiece, comprising:

• a ram element and a stamp element, which are connected with each other in such a way that they are movable to each other in a longitudinal direction between the stamp and the drive ram,
• wherein an adjusting screw is arranged between the ram element and the stamp element, which cooperates with an adjusting wedge, wherein a position of which into a direction of a shaft of the adjusting screw in the longitudinal direction is based on an angular position of the adjusting screw,
• wherein the adjusting wedge rests, on longitudinally opposite sides, with a first adjusting surface against a first stop surface of the ram element and with a second adjusting surface against a second stop surface of the stamp element,
• wherein at least one of the combinations of the first adjusting surface and the first stop surface or of the second adjusting surface and the second stop surface is formed obliquely relative to the direction of the shaft of the adjusting screw, and
• wherein the adjusting wedge is self-locking and/or the adjusting screw is connected to a clamping device which fixes the angular position of the adjusting screw.