Set of components for the assembly of true-pitch rolling-contact planetary transmissions
AssigneeSchaeffler Technologies AG & Co. KG
InventorsSebastian Weis, Waldemar Heier, Patrick Lindemann
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Abstract
A set of components for the assembly of true-pitch rolling-contact planetary transmissions, in particular for electromechanical actuators of rear axle steering systems, comprises at least one threaded spindle, a number of planet rollers which can be placed onto the threaded spindle, at least one cage designed for guiding the planet wheels and provided as a drive element, and a plurality of different spindle nuts provided for receiving the planet wheels. The spindle nuts differ from one another in terms of the play that the planet rollers located between the threaded spindle and the spindle nut have.
Claims17
A kit of components configured for an assembly of true-lead rolling-contact planetary transmissions, comprising:
- a threaded spindle,
- a plurality of planet rollers arranged onto the threaded spindle,
- at least one cage configured for guiding the planet rollers and as a drive element, and
- a plurality of selectable spindle nuts configured for receiving the plurality of planet rollers, each of the plurality of selectable spindle nuts defining a different play of the plurality of planet rollers, the plurality of planet rollers arranged between a selected one of the plurality of selectable spindle nuts and the threaded spindle,
- wherein:
- the plurality of selectable spindle nuts comprises at least three different variants of spindle nuts, and the at least three different variants of spindle nuts define at least three different plays of the planet rollers,
- a first one of the at least three different variants of spindle nuts is configured to produce contacts with play between the spindle nut and the plurality of planet rollers,
- a second one of the at least three different variants of spindle nuts is configured to produce preloaded contacts between the spindle nut and the plurality of planet rollers, and
- a third one of the at least three different variants of spindle nuts is configured to produce a transitional play between the spindle nut and the plurality of planet rollers.
A kit for a planetary screw drive assembly, comprising:
- a threaded spindle,
- a plurality of planet rollers configured to engage with the threaded spindle to convert rotational movement to axial movement, and
- a plurality of selectable spindle nuts, each of the plurality of selectable spindle nuts having a groove profile defined by a first groove and a second groove configured to engage the plurality of planet rollers, and a defined distance between the first groove and the second groove varies amongst the plurality of selectable spindle nuts so as to vary a play of the plurality of planet rollers within the planetary screw drive assembly,
- wherein a first nut of the plurality of selectable spindle nuts produces preloaded contacts between the first nut and the plurality of planet rollers, and a second nut of the plurality of selectable spindle nuts produces contacts with play between the second nut and the plurality of planet rollers.
A kit for a planetary screw drive assembly, comprising:
- a threaded spindle,
- a plurality of planet rollers arranged onto the threaded spindle,
- at least one cage configured for guiding the planet rollers and as a drive element, and
- a plurality of selectable spindle nuts configured for receiving the plurality of planet rollers, each of the plurality of selectable spindle nuts defining a different play of the plurality of planet rollers, the plurality of planet rollers arranged between a selected one of the plurality of selectable spindle nuts and the threaded spindle, and
- the plurality of selectable spindle nuts comprises at least three different variants of spindle nuts, and the at least three different variants of spindle nuts define at least three different plays of the planet rollers.
Dependencies are inferred from the claim text.