TOLERANCE RING WITH STOP
A tolerance ring is an intermediate element for a shaft/hub connection that is positioned in a groove between shaft and hub and that produces a force-fitting connection between these two elements. It has substantially the shape of a hollow cylinder, wherein the lateral surface thereof has embossments in the form of radially inwardly and/or outwardly pointing elevations. Here, provision is made at one longitudinal end of a flange-like collar, which is applied in a radial plane with respect to the central longitudinal axis. The tolerance ring is preferably manufactured in one piece with the flange-like collar from metal as a deep-drawn part, preferably being manufactured from aluminum or an aluminum alloy. An assembly method for such a tolerance ring, and a ball screw drive, and a screw drive, having such a tolerance ring are also provided.
1 . A tolerance ring, comprising:
a substantially hollow-cylindrical basic shape with a first axial longitudinal end and a second axial longitudinal end and with a central longitudinal axis;
a lateral surface of the hollow cylinder has embossments in the form of comprising embossments formed of at least one of radially inwardly or outwardly pointing elevations; and
a flange-shaped collar applied at the second axial longitudinal end in a radial plane with respect to the central longitudinal axis.
2 . The tolerance ring as claimed in claim 1 , wherein the tolerance ring with the flange-shaped collar is formed in one piece from metal as a deep-drawn part.
3 . The tolerance ring as claimed in claim 1 , wherein the tolerance ring is comprised manufactured from aluminum or an aluminum alloy.
4 . The tolerance ring as claimed in claim 1 , wherein a transition region from the hollow-cylindrical basis shape to the flange-shaped collar is smooth.
5 . The tolerance ring as claimed in claim 1 , wherein the embossments in the lateral surface are realized as surface structures which are corrugated, fluted or embossed in a ribbed manner.
6 . A method for securing in a defined end position a flat ring element that is to be attached to the threaded spindle of a ball screw drive, the method comprising the steps of:
providing a threaded spindle having a substantially cylindrical thread-free end portion;
providing a target position on said end portion of the threaded spindle, said target position has a longitudinal stop which is configured to limit a movement of the flat ring element in a first axial direction;
pushing the flat ring element onto the end portion until the longitudinal stop is reached; and
bringing a tolerance ring as claimed in claim 1 onto the end portion of the threaded spindle, with the flange-shaped collar at a front, until the collar, in a defined manner, presses the ring element against the longitudinal stop and fixes said ring element in the target position.
7 . The method as claimed in claim 6 , further comprising, for securing the ring element, pressing a region of the flange-shaped collar in a punctiform or areal manner against the end portion of the threaded ring.
8 . The method as claimed in claim 7 , further comprising providing an encircling incision in the end portion of the threaded spindle in a region of the target position, into which encircling incision the transition region of the tolerance ring engages after being pressed on.
9 . The method as claimed in claim 6 , wherein the threaded spindle provided with the tolerance ring is connected to a hub.
10 . A ball screw drive, comprising:
a threaded spindle which has an outer thread and a spindle nut which engages around said spindle and which has an inner thread;
thread flights are configured as mutually complementary ball grooves which, in a fitted state between threaded spindle and spindle nut, receive a multiplicity of balls, said balls being kept in endless ball circulation by a ball return guide which bridges one or more thread turns;
at one longitudinal end, the threaded spindle has a substantially cylindrical thread-free end portion with a target position, said target position being provided with a longitudinal stop which is configured to limit a movement of a ring element provided there in a first axial direction; and
a tolerance ring as claimed in claim 1 that is pushed onto the end portion of the threaded spindle and defines an end position of a ring element.
11 . A screw drive, comprising:
a threaded spindle which has an outer thread and a spindle nut which engages around said spindle and which engages with the outer thread of said spindle via a complementary inner thread;
at one longitudinal end, the threaded spindle has a substantially cylindrical thread-free end portion with a target position, said target position being provided with a longitudinal stop which is configured to limit a movement of a ring element provided there in a first axial direction; and
a tolerance ring as claimed in claim 1 is pushed onto an end portion of the threaded spindle and defines an end position of a ring element.