Sliding block for an articulated spindle
View Patent ↗An articulated spindle ( 3 ) which is arranged in particular in a drive of a rolling mill, comprises a coupling sleeve for establishing a connection to an articulated head, or an articulated head ( 4 ) for establishing a connection to a coupling sleeve ( 2 ), wherein the tongue ( 1 ) of the coupling sleeve ( 2 ) engages with a cylindrical opening ( 5 ) of the articulated head ( 4 ) that is located transverse to the rotational axis. A sliding block ( 19 ) is arranged between the articulated head and the tongue ( 1 ), said block being formed by two sliding bodies ( 21, 22 ), which have rotational body contours ( 23, 24 ) in two portions, said sliding bodies being arranged rotatably in a rotational body-shaped recess ( 25, 31 ) adjusted to the shape of the sliding bodies ( 21, 22 ) such that they can perform a pivoting motion in the articulated head ( 4 ). The articulated spindle ( 3 ) is characterized in that the rotational body contours ( 23, 24 ) are designed to be concave or convex and the recess ( 25 ) is designed to be accordingly convex or concave.
1. A joint spindle arranged in a drive of a rolling mill, comprising:
a wobbler for effecting a connection to a joint head, or a joint head for effecting a connection to a wobbler, wherein the joint head has a cylindrical opening that extends through the joint head in a direction transversely to an axis of rotation, and the wobbler has a tongue that engages in the cylindrical opening of the joint head; and
a sliding block arranged between the joint head and the tongue, the sliding block being formed by two sliding bodies that have rotational body contours in partial areas, which sliding bodies being arranged rotatably in a recess in the opening in the joint head, which opening is adapted to the shape of the sliding bodies so that the sliding bodies can pivot in the joint head, wherein the sliding bodies each have a long side that extends in the direction that the opening extends through the joint head and a short side, wherein the contours are convex or concave in the direction of the long side of the sliding bodies and transverse to a longitudinal direction of the spindle, the contour of each of the sliding bodies being shaped to extend smoothly and continuously from a first outer end of the long side to a second, opposite outer end of the long side, and the recess is correspondingly shaped convex or concave.
2. The joint spindle according to claim 1 , wherein the contours have in the partial areas have a drum shape or, a one-sheeted hyperboloid shape.
3. The joint spindle according to claim 2 , wherein the shape of the drum is obtained by a rotation of a curve having a spherical, elliptical, or parabolic curvature.
4. The joint spindle according to claim 1 , wherein the sliding block is under stress relative to the recess receiving it.
5. The joint spindle according to claim 4 , wherein the stress is determined by the shapes of the contours of the rotational bodies of the sliding block and the recess.
6. The joint spindle according to claim 4 , further comprising adjusting means for adjusting the stress of the sliding block relative to the recess, the adjusting means adjusting a distance of the two sliding bodies relative to each other.
7. The joint spindle according to claim 6 , wherein the adjusting means includes an adjusting belt.
8. A sliding block for use in a joint spindle having a joint head with a cylindrical opening that extends through the joint head in a direction transversely to an axis of rotation, the sliding block being formed by two sliding bodies that have rotational body contours in partial areas, which sliding bodies being arranged rotatably in a recess in the joint head adapted to the shape of the sliding bodies so that the sliding bodies can pivot in the joint head, wherein the sliding bodies each have a long side that extends in the direction that the opening extends through the joint head and a short side, wherein the contours are convex or concave in the direction of the long side of the sliding bodies and transverse to a longitudinal direction of the spindle, the contour of each of the sliding bodies being shaped to extend smoothly and continuously from a first outer end of the long side to a second, opposite outer end of the long side, and the recess is correspondingly shaped convex or concave.