US 12,134,120 B2
Method for obtaining face teeth on an inner ring of a wheel hub and associated tool
Maurizio Bertola, Piscina (IT); Fulvio Carlo Nicastri, Garzigliana (IT); and Paolo A Re, Nichelino (IT)
Assigned to AKTIEBOLAGET SKF, (SE)
Filed by AKTIEBOLAGET SKF, Gothenburg (SE)
Filed on Jan. 28, 2022, as Appl. No. 17/586,843.
Claims priority of application No. 102021000002189 (IT), filed on Feb. 3, 2021.
Prior Publication US 2022/0241844 A1, Aug. 4, 2022
Int. Cl. B21K 1/30 (2006.01); B21D 53/26 (2006.01); B21J 5/12 (2006.01); B21J 9/02 (2006.01); F16D 1/10 (2006.01)
CPC B21K 1/30 (2013.01) [B21D 53/265 (2013.01); B21J 5/12 (2013.01); B21J 9/025 (2013.01); F16D 1/10 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for obtaining a plurality of finished teeth, the method comprising:
forming, on an annular collar of an inner ring of a wheel hub, a plurality of annular roughed-out teeth comprising a plurality of first radially extending teeth arranged annularly and a plurality of first radial concavities alternating annularly with the plurality of first radially extending teeth, wherein the plurality of annular rouged-out teeth are formed coaxial with an axis of symmetry (A) of the annular collar, wherein the axis A coincides with an axis of symmetry (B) of the wheel hub; and
calibrating the plurality of annular roughed-out teeth with a shaping tool, the shaping tool comprising a pressing head comprising a plurality of annular calibration teeth, wherein calibrating the plurality of annular roughed-out teeth comprises:
pressing the shaping tool against the plurality of annular roughed-out teeth of the annular collar with a predetermined axial force (F), thereby engaging the plurality of annular calibration teeth with the plurality of annular roughed-out teeth to form the plurality of finished teeth,
wherein the pressing head is coaxial with the axis (A) when pressed against the annular collar;
wherein the plurality of annular calibration teeth of the pressing head comprise:
a plurality of second radial teeth arranged annularly; and
a plurality of second radial concavities alternating annularly with the plurality of second radial teeth, the plurality of second radial concavities delimited by a plurality of bottom walls, each bottom wall comprising a respective second rounded circumferential profile,
wherein the plurality of finished teeth comprise:
a plurality of third radially extending teeth comprising a plurality of ridges comprising a respective first rounded circumferential profile; and
a plurality of third concavities alternating annularly with the plurality of third radially extending teeth, wherein each respective first rounded circumferential profile is defined by each respective second rounded circumferential profile.