A roll as well as a ring for such a roll

Abstract

In a first aspect, the invention relates to a ring, preferably in the form of a lock nut, made for combi rolls, which ring includes at least one spring device (12) in which a mechanical compression spring (18) is included that acts between, on one hand, a front press body (19) that is movable to and fro in order to constantly forward a spring force generated by the compression spring and, on the other hand, a support body (20), which may assume a fixed position, but which is adjustably movable by way of a screw (26) in order to alter the tension in the compression spring. In another aspect, the invention relates to a combi roll in which the ring according to the invention is included.

Description

technical field [0001] In a first aspect, the invention relates to a roll comprising a drivable roll shaft and two axially spaced apart stop rings, one of which is fixed and the other is a lock nut, a plurality of other rings being mounted Between the snap rings, one or more of these other rings are roller rings. [0002] Rolls of this type substantially as described above are referred to as composite rolls by those skilled in the art. In practice, such rolls are used for hot or cold rolling of long and narrow metal products, such as metal wire, rod, pipe, etc. For this purpose, these roll collars or rings, ie rings for performing metal forming, unlike spacer rings or the like, are formed with a plurality of circumferential grooves generally having a semicircular cross-sectional shape. Background technique [0003] An important factor for the long-term proper functioning of such rolls is that the different rolls and spacer rings are fixed in a reliable manner relative to e...

AI Technical Summary

Problems solved by technology

However, this solution was not successful due to the positioning of the springs in the roller ring and spacer ring set etc. and due to fatigue problems

In fact, the tension or spring force of the Belleville spring in question should be possible to readjust, i.e. by means of a set of screws, but due to its positioning inside the set of removable rings, the spring is continuously subjected to a force which makes The spring deforms or rather flattens, which leads to relaxation or fatigue to the point that the spring loses the force in the frictional joint between the rings during operation and keeps the rings momentarily pressed against each other with no slipping Reliable ability

Furthermore, the inclined springs wear against the adjacent rings in such a way that they become worn in a rather short time due to the fact that the springs have (circular) line contact rather than surface contact with the rings

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