Ball screw drive
A ball screw drive ( 10 ) including a threaded spindle ( 12 ) and a spindle nut ( 14 ) which at least partially coaxially encloses the threaded spindle ( 12 ) and has a stop at an axial end face ( 18 ). A multiplicity of balls can circulate in the space ( 16 ) between the threaded spindle ( 12 ) and the spindle nut ( 14 ). A radial stop element ( 22 ) is connected to the threaded spindle ( 12 ) in a force-fitting manner and adapted to interact with the complementary axial end face ( 18 ) of the spindle nut ( 14 ). A bearing element is provided for receiving a first longitudinal end of the spindle nut ( 12 ). The radial stop element ( 22 ) and the bearing element are designed in combination as an integral bearing/stop element ( 24 ) which has two anti-rotation features ( 26, 28 ).
1. A ball screw drive ( 10 ), comprising:
a threaded spindle ( 12 ),
a spindle nut ( 14 ) which at least partially coaxially encloses the threaded spindle ( 12 ) and has a stop on an axial end face ( 18 ),
a plurality of balls that are adapted to circulate in the space ( 16 ) between the threaded spindle ( 12 ) and the spindle nut ( 14 );
an integral bearing/stop element ( 24 ) connected to the threaded spindle ( 12 ) in a force-fitting manner, adapted to interact with the axial end face ( 18 ) of the spindle nut ( 14 );
the integral bearing/stop element receives a first longitudinal end of the threaded spindle ( 12 );
first and second anti-rotation features ( 26 , 28 ) are located on the integral bearing/stop element ( 24 ); and
the second anti-rotation feature ( 28 ) is formed such that the bearing/stop element ( 24 ) is adapted to be connected to a further receptacle in a force-fitting manner.
2. The ball screw drive ( 10 ) according to claim 1 , wherein the first anti-rotation feature ( 26 ) is formed such that an angular relationship between the threaded spindle ( 12 ) and the bearing/stop element ( 24 ) is adapted to be adjusted and subsequently fixed in a force-fitting manner.
3. The ball screw drive ( 10 ) according to claim 1 , wherein the first anti-rotation feature ( 26 ) is comprised of a system including a polygon ( 30 ) integrally formed on the threaded spindle ( 12 ) or a gear wheel arranged or integrally formed radially on an outside of the threaded spindle, said polygon or gear wheel interacts with an internally toothed bore ( 32 ) of the bearing/stop element ( 24 ).
4. The ball screw drive ( 10 ) according to claim 3 , wherein a pitch of the internally toothed bore is an integer multiple of a pitch of the polygon ( 30 ) or of the gear wheel arranged radially on the outside of the threaded spindle.
5. The ball screw drive ( 10 ) according to claim 1 , wherein the stop ( 20 ) on the axial end face ( 18 ) of the spindle nut ( 14 ) comprises a projection, a cantilever or a clearance.
6. The ball screw drive ( 10 ) according to claim 1 , further comprising at least one radial stop ( 34 ) on the bearing/stop element ( 24 ) and comprises a projection, a cantilever, or a clearance.