US 11,788,605 B2
Modular high precision gear box arrangement
Ingo Schulz, Gerolzhofen (DE)
Assigned to AKTIEBOLAGET SKF, Gothenburg (SE)
Appl. No. 17/795,591
Filed by AKTIEBOLAGET SKF, Gothenburg (SE)
PCT Filed Jan. 29, 2021, PCT No. PCT/EP2021/052180
§ 371(c)(1), (2) Date Jul. 27, 2022,
PCT Pub. No. WO2021/156155, PCT Pub. Date Aug. 12, 2021.
Claims priority of application No. 102020201340.3 (DE), filed on Feb. 4, 2020.
Prior Publication US 2023/0096956 A1, Mar. 30, 2023
Int. Cl. F16H 57/033 (2012.01); F16H 1/28 (2006.01); F16H 57/023 (2012.01)
CPC F16H 1/2863 (2013.01) [F16H 57/023 (2013.01); F16H 2001/2872 (2013.01); F16H 2057/0335 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A modular high precision gear box arrangement comprising at least a first gear box and a second gear box, wherein:
the first gear box comprises a first rotatable hollow wheel, a second fixed hollow wheel and at least one double planet having a first planet stage with at least one first planet and a second planet stage with at least one second planet, wherein one first planet of the first planet stage and one second planet of the second planet stage are arranged on a planet shaft, wherein the at least one first planet of the first planet stage meshes with the first hollow wheel and the at least one second planet of the second planet stage meshes with the second hollow wheel, and wherein the first hollow wheel is coupled with an output; and
the second gear box comprises a fixed hollow wheel being the second hollow wheel of the first gear box and at least one planet being arranged at the second planet stage of the at least one double planet of the first gear box, wherein the at least one planet is the second planet of the at least one double planet of the first gear box, and wherein the second gear box further comprises an input for driving the planet shaft, wherein the input is arranged centrically or eccentrically to a central rotation axis of the gear box arrangement,
wherein:
the second gear box comprises a sun and a third planet stage with at least two third planets, a first one of the at least two third planets being arranged on the planet shaft in a first plane and a second one of the at least two third planets being arranged opposite the first one of the at least two third planets in the first plane, and
the sun meshes with the at least two third planets and the input is arranged centrically and is coupled to the sun.