A tool coupling includes a first member, having a male coupling portion extending along a first axis, and a second member, having a female coupling portion extending along a second axis. The male coupling portion has front and rear drive members defining male front and rear footprints in respective first and second transverse mating planes. The female coupling portion has front and rear drive passages defining front and rear peripheral profiles in respective first and second transverse passage planes. The front and rear drive members respectively occupy the front and rear drive passages, and at least one of the front and rear drive members prevents rotation of the second member about the second axis. On imaginary rotation of the front peripheral profile by any angle about the second axis and axial projection thereof, the front peripheral profile overlaps (i.e., at least partially crosses) the rear footprint.

A tool coupling includes a first member, having a male coupling portion extending along a first axis, and a second member, having a female coupling portion extending along a second axis. The male coupling portion has front and rear drive members defining male front and rear footprints in respective first and second transverse mating planes. The female coupling portion has front and rear drive passages defining front and rear peripheral profiles in respective first and second transverse passage planes. The front and rear drive members respectively occupy the front and rear drive passages, and at least one of the front and rear drive members prevents rotation of the second member about the second axis. On imaginary rotation of the front peripheral profile by any angle about the second axis and axial projection thereof, the front peripheral profile overlaps (i.e., at least partially crosses) the rear footprint.

A device for perforating and/or fluting and/or punching for rotary presses and/or rotary printing presses has a rotation cylinder with a holding device that fixes a base plate of a flexible and dimensionally stable material to the rotation cylinder. Fixing rods are arranged at a distance from each other in the peripheral direction of the rotation cylinder, the rods holding a flexible tool support supporting at least one machining tool on the rotation cylinder such that tool support lies directly or indirectly on the base plate. The fixing rods are respectively formed from at least one multi-jointed hinge bar having a first hinge bar which holds the hinge bar on the rotation cylinder. A second hinge bar is articulated to the first hinge bar so that, when the hinge bars are superimposed and/or closed, the tool support is clamped and/or received between the bars.