Abstract: A method and tool for producing workpieces with small corner radii in relation to the cutting thickness and with greatly reduced draw-in by precision cutting in a precision cutting tool includes clamping the workpieces between two tool parts consisting of a respective top and bottom cutting dies and of a top and a bottom cutting punch. The workpiece is machined in a one-stage arrangement in at least two successive cutting sequences in different cutting directions with the following partial steps: (A) cutting out a semifinished product, matched to the workpiece geometry, in a first cutting operation in a vertical working direction with slight draw-in, and (B) finish cutting of the semifinished product, produced in step (A), in at least one further cutting operation in a working direction opposed to step (A), wherein the draw-in of partial step (A) is filled again at least in the corner region.

Abstract: The incomplete compound die cut along the circumference of the precision blanking is performed with a specially shaped cutting edge of cutting punch (11) and/or the die plate (5) in such a way that the precision blanking (1) remains initially connected by a material bonding to at leas one partial connecting part on the material strip (2), either on the upper or lower plane at a level relative to the material strip. It is then moved together with the material strip in the running direction of the strip to a subsequent removal stage (ejector), in which the precision blanking and the material strip are separated from each other perpendicular to the running direction of the material strip towards the bottom by breaking out the connecting part without a vertical shear force component and without being pressed back, wherein the removed precision blanking (1) is discharged through a discharge chute (9) in the die plate.

Abstract: The incomplete compound die cut along the circumference of the fine-blanked part is carried out with a specially shaped cutting edge of cutting punch (11) and/or cutting plate (5) such that the fine-blanked part (1) initially remains bonded to at least one partial connecting part on the material strip (2), either on the upper or lower plane at a level relative to the material strip. It is then moved together with the material strip in the running direction of the strip to a subsequent removal stage (ejector), in which the fine-blanked part and material strip are separated from each other perpendicular to the running direction of the material strip towards the bottom by braking the connecting part without a vertical shear force and without pressing, wherein the removed fine-blanked part (1) is fed through a chute (9) in the cutting plate.

Abstract: A method for the production of stamped part in a tool, particularly a fine cutting tool, by means of at least one stamp which is used to press the stamped part from a strip of material. According to the inventive method, the stamped part is moved from the material strip to a discharge element after it has been pressed from the material strip.

Abstract: The invention relates to a method and a tool for producing workpieces with small corner radii in relation to the cutting thickness and with greatly reduced draw-in by precision cutting in a precision cutting tool (3) of a precision cutting machine, in which method the workpiece is clamped between two tool parts consisting of a respective top and bottom cutting die and of a top (10) and a bottom cutting punch (20), and the cutting is effected in interaction with the top (10) and the bottom cutting punch (20). The object of the invention is to improve a method and a tool for producing workpieces in such a way that the precision cutting can also be applied to parts with small corner radii and sharp-edged corners at a greater sheet thickness without restricting the functioning of the parts and while simultaneously ensuring economical advantages.

Abstract: A method for the production of stamped part in a tool, particularly a fine cutting tool, by means of at least one stamp which is used to press the stamped part from a strip of material. According to the inventive method, the stamped part is moved from the material strip to a discharge element after it has been pressed from the material strip.