Threaded nut of a ball screw drive, and method for producing same
AssigneeSchaeffler Technologies AG & Co. KG
InventorsMario Kreutzer, Richard Baier, Claus Pfeffer, Thomas Kandler, Bastian Kettler
Life of this patent
Estimating the term…
Abstract
The disclosure relates to a threaded nut of a ball screw drive. The threaded nut includes an inner sleeve made of sheet metal and an outer sleeve made of sheet metal. The inner and outer sleeves are nested axially in one another to form a nut sleeve. A thread of the nut sleeve is helically wound about a longitudinal axis of the threaded nut and forms a ball groove on the inner circumference of the inner sleeve. The outer sleeve is provided along the thread with at least one outer hole into which material of the inner sleeve is molded.
Claims20
A threaded nut of a ball screw drive, the threaded nut comprising:
- an inner sleeve constructed of sheet metal, and
- an outer sleeve constructed of sheet metal, the inner sleeve and outer sleeve nested axially in one another to form a nut sleeve having a thread, the thread helically wound about a longitudinal axis of the threaded nut and forming a ball groove on an inner circumference of the inner sleeve, and
- the outer sleeve having at least one outer hole along the thread, and a material of the inner sleeve is molded into the at least one outer hole.
A threaded nut of a ball screw drive, the threaded nut comprising:
- an inner sleeve constructed of sheet metal, and
- an outer sleeve constructed of sheet metal, the inner sleeve and the outer sleeve nested axially in one another to form a nut sleeve having a thread, the thread helically wound about a longitudinal axis of the threaded nut and forming a ball groove on an inner circumference of the inner sleeve, and
- the outer sleeve having an outer hole along the thread, and a material of the inner sleeve extends into the outer hole.
A method for producing a threaded nut, the method comprising:
- providing an outer sleeve constructed of sheet metal, the outer sleeve having an outer hole,
- providing an inner sleeve constructed of sheet metal,
- inserting the inner sleeve within the outer sleeve to form a nut sleeve,
- inserting the nut sleeve into a die,
- moving a forming tool into the nut sleeve so as to simultaneously form:
- i) a helically wound ball groove on an inner circumference of the inner sleeve, ii) a helically wound inner ridge on an outer circumference of the inner sleeve, the helically wound inner ridge formed within the outer hole of the outer sleeve, and iii) a helically wound groove on an inner circumference of the outer sleeve, the helically wound groove engaged with the helically wound inner ridge.
Dependencies are inferred from the claim text.