Patent ID: 8375761
Filing Date: 2013-02-19
Classification: B21D,B21H

Abstract:
1. A method for producing an internally and externally toothed cup-shaped component from an untoothed cup-shaped sheet material component, the untoothed cup-shaped component having a center axis and the resulting toothed cup-shaped component having teeth that run parallel to the center axis of the cup-shaped component, the method comprising: sliding the untoothed cup-shaped sheet material component onto a pick-up mandrel formed with external alternating teeth and grooves corresponding to teeth and grooves to be produced on the cup-shaped sheet material component, the pick-up mandrel being mounted to a linearly movable ram element; rolling an external profile onto the cup-shaped sheet material component by pressing the cup-shaped sheet material component together with the pick-up mandrel through a set of profile rollers rolling in parallel to the center axis of the cup-shaped sheet material component while exerting a radial pressure, thereby pressing the material into the grooves of the pick-up mandrel; during the rolling step, displacing each profile roller of the set of profile rollers toward the pick-up mandrel, the relative motion of the profile rollers and the pick-up mandrel being toward an open end of the cup-shaped sheet material component; controlling radial displacement of each profile roller of the set of profile rollers by means of adjusting elements during the rolling step; thereby generating the toothed cup-shaped component due to a pressure relief; and removing the thereby cup-shaped toothed component from the mandrel.