Patent ID: 6253589
Filing Date: 2001-07-03
Classification: B21D,B21H,Y10T

Abstract:
Flow-turning device (1; 101) for producing an internally geared wheel (17) having two sets of internal toothing, said flow-turning device having a first (2; 102) and a second (4; 104) shaping tool each having an external toothing (3, 6), in which device the two shaping tools (2, 4; 102, 104) can be coupled to each other in a rotationally secure manner for flow-turning, the flow-turning device having pressure rollers (10) for flow-turning a workpiece (9) sitting on the shaping tools (2, 4; 102, 104) which are connected to each other, and having holding means (16; 116) which secure the workpiece (9) against rotation during the flow-turning of the first internal toothing on the first shaping tool (2; 102), characterised in that at least one shaping tool (2; 102) has a helical toothing (3), and in that there is provided at least one stripping element (18) which is movable in the longitudinal direction and which, after the mutual coupling of the two shaping tools (2, 4; 102, 104) has been released, pushes the completed internally geared wheel (17) off of one shaping tool (2; 102) with helical toothing (3) with relative rotation between shaping tool (2; 102) and internally geared wheel (17).