US 12,337,373 B2
Method and device for producing a rolling bearing cage from a sleeve-like blank
Dennis Hahn, Solingen (DE); Giovanni Sorrentino, Neuss (DE); and Christian Schwahlen, Haan (DE)
Assigned to HSP SCHWAHLEN GMBH, (DE)
Appl. No. 18/577,094
Filed by HSP SCHWAHLEN GMBH, Langenfeld (DE)
PCT Filed May 9, 2022, PCT No. PCT/EP2022/062399
§ 371(c)(1), (2) Date Jan. 5, 2024,
PCT Pub. No. WO2023/280454, PCT Pub. Date Jan. 12, 2023.
Claims priority of application No. 10 2021 117 777.4 (DE), filed on Jul. 9, 2021.
Prior Publication US 2024/0316615 A1, Sep. 26, 2024
Int. Cl. B21D 53/12 (2006.01); B21D 22/18 (2006.01); B23P 15/00 (2006.01); F16C 33/54 (2006.01)
CPC B21D 53/12 (2013.01) [B21D 22/18 (2013.01); B23P 15/003 (2013.01); F16C 33/543 (2013.01); Y10T 29/49668 (2015.01); Y10T 29/49671 (2015.01); Y10T 29/49691 (2015.01)] 8 Claims
OG exemplary drawing
 
1. A method for producing a rolling bearing cage from a sleeve-shaped blank, comprising the steps of:
step A: providing the sleeve-shaped blank extending along an axis;
step B: rolling a wall portion to be formed of said blank while changing an angle of said wall portion to be formed relative to said axis of said blank to create a rolled wall portion; and
step C: introducing rolling element seats into said rolled wall portion,
wherein the step B comprises the following sub-steps:
sub-step B-2: moving a rolling tool and/or said blank such that said rolling tool rolls on a path along the inner circumference and/or along the outer circumference of said wall portion to be formed and forms said wall portion to be formed while reducing a thickness of said wall portion as well as changing an inner circumference and/or an outer circumference of said wall portion; and
sub-step B-4: repeating sub-step B-2 until a desired shape of said wall portion to be formed has been obtained, wherein said angle is changed with each repetition.