High-precision guide and guard beam

Abstract

The invention discloses a high-precision guide and guard beam. The high-precision guide and guard beam comprises a frame, two longitudinal adjusting devices symmetrically arranged left and right, and a transverse adjusting device; the two longitudinal adjusting devices are symmetrically arranged on the left side and the right side of the frame; the transverse adjusting device is used for adjusting horizontal movement of the frame; the transverse adjusting device includes a lead screw; the lead screw is mounted on the lower side of the frame through a fixing device; two ends of the lead screw are respectively fixed at two ends of the lower side through a locking nut and a first back cover; the lead screw is provided with a second gland for positioning and two positioning devices symmetrically arranged on two sides of the lead screw; and a thrust bearing and a rolling needle thrust bearing are arranged between the locking nut and the second back cover in sequence. The high-precision guide and guard beam has the characteristics of firm lead screw positioning, convenience to rotate the lead screw and higher production efficiency.

Description

technical field [0001] The invention belongs to the technical field of rolling mill equipment, and in particular relates to a high-precision guide beam. Background technique [0002] The rolling mill guide beam is located on both sides of the roll to install the beam of the rolling mill guide device. The size of the rolled piece in the finishing rolling area is relatively small, and the rigidity of the rolled piece is poor. Flying steel, large size deviation of rolled pieces and other problems. Therefore, the adjustment accuracy of the guide crossbeam and the stability of the fixed guide device are particularly important in steel rolling production. [0003] There are roughly two types of existing rolling mill guide beams. The first type is as figure 1 As shown, there is a gap between the frame and the stopper, and the bolts are easy to loosen under the impact load when the guide beam is working, causing the frame to move easily in the horizontal direction, and the outer e...

AI Technical Summary

Problems solved by technology

[0003] There are roughly two types of existing rolling mill guide beams. The first type is as figure 1 As shown, there is a gap between the frame and the stopper, and the bolts are easy to loosen under the impact load when the guide beam is working, causing the frame to move easily in the horizontal direction, and the outer edge of the bushing is easy to wear, which will cause the screw to appear. Axial movement

At the same time, due to the machining error and wear of the copper nut on the lead screw and the lead screw, the axial clearance between the copper nut and the lead screw is relatively large

The second type, such as figure 2 As shown, the disadvantage is that the beam is fixed on the rolling mills on both sides and cannot be adjusted vertically; the screw is supported and fixed by two bearings. This structure is improved compared to the above structure, but the deep groove ball bearing axial clearance Larger, the axial movement of the screw is larger

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