Inclined roller type rolling mill and method for rolling thereby

Abstract

This invention provides a cross-rolling rolling machine that is of a simple construction, low installation cost and high reliability, while preventing position displacement within the gaps of the roll-chocks, and a rolling method by using the cross-rolling rolling machine. When rolling the material to be rolled, working roll-chocks 3, 4 are forced towards working rolls 1 by springs 21 while performing the rolling operation. Or, back-support roll-chocks 5, 6 are forced towards working rolls 2 by springs 25 while performing the rolling operation.

Description

technical field [0001] The present invention relates to an invention of an inclined-roll mill and a method of rolling with an inclined-roll mill. Background technique [0002] The feature of the inclined-roll mill is a rolling mill that rolls a rolling stock while the upper and lower work rolls are placed at an inclined state. Figure 12(a) and Figure 12(b) show the positional relationship between the upper and lower work rolls and the rolled piece. Fig. 12(a) is a plan view, and Fig. 12(b) is a side view. As shown in FIG. 12( a ), the upper and lower work rolls 101 are arranged such that the center of the rolling stock S in the width direction is taken as the center of inclination (slant point) c at a predetermined inclination angle (intersection angle) θ (variable). In this way, as shown in Figure 12(b), there is a difference between the opening degree a of the upper and lower work rolls 101 near the oblique point c and the opening degree b of the upper and lower work rol...

AI Technical Summary

Problems solved by technology

However, it is not possible to provide a lubricant inlet in the sliding part between the bearing seat and the hydraulic cylinder because the hole that supplies the lubricant to the hydraulic cylinder must be penetrated.

If the bearing seat is squeezed by the hydraulic cylinder, the sliding pressure will increase, and the cost of repair will increase due to the increased wear of the bearing block and the hydraulic cylinder.

[0022] As described in the above-mentioned Patent Document 4, in the method of measuring the shrinkage of the rolling stand caused by the rolling load in advance and minimizing the distance between the bearing housing and the rolling stand, when the rolling load is small, that is, When the deformation of the stand is small, there is a gap between the chock and the mill stand, and sometimes the position of the chock cannot be completely stabilized.

If the distance between the bearing housing and the rolling mill frame is set too small, sometimes there will be equipment failures such as the bearing housing being clamped by the housing, the rolls not turning, and the bearing burning.

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