Method of forming a splined component
AssigneeMAGNA Powertrain AG & Co KG
InventorsHarold Vahle, Saso Cekalov
Life of this patent
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Abstract
A method of manufacturing a torque-transmitting component includes providing a flat blank to a transfer press having a plurality of stations and performing a plurality of pressing operations, in which the flat blank is formed into a cup shape, rough splines are formed on the cup shape, and the rough splines are further pressed to define smooth splines. The component includes a continuous smooth inner diameter defined by a punch of the transfer press and a plurality of smooth splines defined by a die of the transfer press. The minor diameter of the splines is not machined to form the splines.
Claims11
A method of manufacturing a torque-transmitting component, the method comprising the steps of:
- providing a flat annular blank having a flat profile to a transfer press having a first station, second station, third station, and fourth station, the first, second, third, and fourth stations including a first, second, third, and fourth die and a first, second, third, and fourth punch, respectively;
- at the first station of the transfer press, drawing the blank between the first die and the first punch and forming an unfinished component having a radial flange segment and an axial hub segment, the unfinished component being in the form of a first cup-shaped preform;
- transferring the first preform to the second station and pressing the first preform between the second die and the second punch and defining a second preform of the unfinished component having a chamfer portion disposed between the flange segment and the hub segment;
- transferring the second preform to the third station and pressing the second preform between the third die and the third punch and defining a rough splined preform of the unfinished component having a plurality of rough splines extending radially outward from the hub segment;
- and
- transferring the rough splined preform to the fourth station and pressing the rough splined preform between the fourth die and the fourth punch and defining a smooth splined component having a final radial flange segment and a final axial hub segment;
- wherein the smooth splined component includes, along the final axial hub segment, a constant inner diameter, a smooth minor outer diameter, and a smooth major outer diameter.
Dependencies are inferred from the claim text.