Importance

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Abstract

Apparatus for the production of sunken shapes in the form of regular or irregular cogs and/or markings on the outer circumference of rotationally symmetrical sheet-metal workpieces. The apparatus includes at least one rotatable spindle with a workpiece holder and at least one applicable pressure roller, with a punch ring which can be superimposed in the spindle's axial direction onto the outer circumference of the workpiece, is concentric with the workpiece, and is rotatable therewith, at least one embossing punch which is held radially displaceably in a corresponding sliding guide in the punch ring and whose length in the radial direction is greater than the radial thickness of the punch ring by at least the radial depth of the indentations, and an intermediate ring which radially externally surrounds the punch ring and the one or more punches guided therein, is mounted floatingly on the punch ring, and can have a radially inwardly directed force applied to it unilaterally by the pressure roll.

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First Claim