Patent GB-585918-A (GB)
Title: Improvements in or relating to straightening by skew rolling
IPC: B21D3/04
Filed: 1943-06-23
Abstract: 585,918. Straightening by skew rolling. SUTTON, J. B. June 23, 1943, No. 10134. [Class 83 (iv)] Skew roll straightening is effected by means of groups of three concave rolls 1, 2, 3 and 4, 5, 6, Fig. 1b, in combination with intermediate deflecting rolls that may be either single rolls or a group of two, 8, 9. The groups of three rolls are or may be provided with axial, lateral and angular adjustments. The housing comprises end sections 10 connected by side sections 11 and the primary rolls 1, 4 that are longer than the secondary rolls 2, 3 and 5, 6 are mounted in yokes 15, 16, on a side section 11, that are angularly adjustable by screws and hand wheels 18a, 19a on an end section 10, being clamped after adjustment by bolts and arcuate slots 17. These rolls are driven through universal joints 35 and wobblers 20, 21, the axial movement at the driving end resulting from angular adjustment being taken care of by a wide pinion 32 forming part of a spur gear reduction train mounted in a separate housing 13 supported by an outboard column 14. The gearing is driven by a bevel gear pair from an electric motor 12. The secondary rolls are mounted in yokes 45, Figs. 9 and 11, angularly adjustable in offset heads 46 of slides 47 being clamped after adjustment by nuts 61 on reduced stems 60 in conjunction with wedges 64 controlled by right-and left-hand threads on spindles universally connected at 55 to hand wheels mounted on the end sections 10. Similar connections 54 operate worms 58 engaging pinions 59 to effect the adjustment. Relative adjustment between the wedges and the nuts 61 provides adjustment of the yokes transversely to the pass line normally to provide compensation for wear. The slides 47 are guided by keys in ways formed in the side sections 11 and in caps 44, and adjustment is effected by screws 49 bevel geared to a crossshaft 41 having a hand wheel 42. This adjustment along convergent paths is described in Specification 578,747: If individual adjustment of the two secondary rolls is required, the connecting shaft 41 is omitted and'the spindles 50 are extended to carry hand wheels and graduated dials are fitted to facilitate adjustment. In a modification, the primary rolls are arranged below and the secondary rolls above the pass line. The guides for the slides 47 of the secondary rolls may be mounted as shown at 92, Fig. 16, in two-part casings 94, 95 formed with slideways adjustable along ways formed on blocks 101 secured to the side sections 11, gib clamping being provided at 102, 105. The rolls are thus adjustable relatively to the primary rolls along the axis of the pass. The pinions 98 are in this case connected through lateral telescopic shafts to the common operating shaft corresponding to the shaft 41, Fig. 9. The intermediate rolls may be adjustably mounted as described in U.S.A. Specification 1,832,631. In a further modification, the yokes supporting the primary rolls are carried by blocks slidable in a slot in the housing parallel to the axis of the pass, and adjustment transversely may be, provided by means of interchangeable spacing blocks of different thicknesses.