Ball screw drive
AssigneeSFS intec Holding AG
InventorsHanspeter Kuster, Marijo Zach, Andreas Kalb, Stefan Frei, Pascal Hutter
Life of this patent
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Abstract
A ball screw having a spindle nut (21), a threaded spindle, and a retaining element (23) is provided. The retaining element (23) is connected in a form-fitting, play-free manner to the threaded nut (21) by a projection (24) which fits around the outside of the threaded nut (21) in an end region. The threaded nut (21) and the retaining element (23) functioning as a force transmission member are first positioned precisely during manufacture and then connected by a form-fitting, in particular play-free connection, in particular by caulking, crimping, clinching or other deformation processes.
Claims4
A method for producing a ball screw which has a threaded spindle, a threaded nut, and a retaining element, the method comprising:
- first positioning the threaded nut and the retaining element which functions as a force transmission member together precisely during manufacture without deformation of the threaded nut or the retaining element by axially pushing the retaining element into a defined fit position on the spindle nut body against a stop region in which an axial end of the threaded nut contacts a surface of the retaining element and a projecting region of the retaining element that fits over the end of the threaded nut extends axially beyond the stop region, and
- then connecting said retaining element by a form-fitting connection via a radial application of force at least in some sections of the projecting region axially spaced from the stop region to at least one of caulk, crimp, clinch, or deform material of the projecting region onto the threaded nut without affecting a position of the stop region.
Dependencies are inferred from the claim text.