JPS58167008A - Rolling mill equipped with roll grinding device - Google Patents

Abstract

PURPOSE:To obtain a titled mill capable of grinding roll in on-line state and improving productivity, by mounting a roll grinding device onto a connecting body used for holding and connecting work roll chocks, and constituting the device interlocked to a roll shifting device movably together with the roll shift. CONSTITUTION:In a roll-shifting-type rolling mill having work rolls 2, 2' and back-up rolls 3, 3' incorporated respectively in a housing 1 and made shiftable in their axial directions respectively, chocks 4, 4' of the work rolls are supported and connected with each other by holding them from both sides with the aids of shifting beams 6, 6', and the work rolls 2, 2' are shifted in their axial directions by a long shifting cylinder 7. Further, a grinding material case 9, used for moving a grinding material 8 back and forth in order to grind the roll 2 while rolling, is attached to a grinding material supporting bed 10 which is fixed to said shifting beam 6 through a cylinder 11 used for fixing the bed 10, thereby the grinding device is moved to follow up the shift of the work roll. And the uniform grinding is performed by making the material 8 movable in the direction of the roll axis with the aid of a short stroke cylinder 12 attached to the shifting beam 6.

Description

[Detailed description of the invention] The present invention relates to a rolling mill with a single abrasive material.

The present invention relates to a rolling mill equipped with a device suitable for polishing a dovecote in which the lug moves in the axial direction, that is, the lug shifts during rolling.

Hot rolling, one hot step) Strip finish rolling KsI-
At the same time, the work causes wear on the FEIi material and Ogravity. This is due to the increase in deformation resistance as low-1 rolling of FF1ll# progresses due to the energy reduction of Kinto O rolling equipment. Proportionally, vh is also 42) J:t. I
2- When the rail wear occurs, the specified dimensions, depending on the width of the
Rolled products with the same shape and appearance cannot be obtained. Therefore, it is inevitable that the next rolled material can only be rolled with the same width or narrower width.--The rolling schedule until the reclassification is as follows.
Since the width is unilaterally restricted from wide to narrow, and it is necessary to arrange the rolled materials in advance in order of width, the front and back processes and the final
The production efficiency is reduced because it is necessary to periodically remove the wheels from the rolling mill and perform polishing. Online skill polishing is a way to solve these problems. This is achieved by modifying the surface of the rolls during the rolling process and always maintaining the surface of the rolls as close to that immediately after the rolls were reassembled, thereby achieving zero-free rolling schedules and changing the shape of the rolled products. There are nine things that make it possible to maintain a constant level at all times.

On the other hand, the roll shift rolling mill, which is well known for producing high-precision, high-quality rolled materials, is also equipped with the above-mentioned online roll polishing device. W-
The characteristics of the shift rolling mill are that by moving the rolls in the axial direction, a moment that is substantially the same as the bending moment that occurs in the roll during rolling is generated by a contact stress distribution load, and that the shift rolls are moved in the axial direction. Limited to roll and round case 1
- The wear profile can be controlled by shifting the wear area of the roll. Therefore, if the roll polishing device is designed as a separate entity from the roll and roll bearing box, the wear profile can be controlled by shifting the wear part of the roll. from.

If the abrasive surface is greatly removed, a uniform ■-ru surface cannot be expected. Therefore, the one-wheel polishing device must be integral with the mill, roll, and roll bearing box, which must be moved with the roll shift. However, it is difficult to install the abrasive material support base in the space formed by the conventional rolling mill main body housing, solenoid, and roll bearing box because it requires rigidity to withstand the polishing pressure. Atsue.

The purpose of the present invention is to enable on-line polishing in a fermentation rolling mill, to make rolling schedules flexible, to reduce the number of roll changes, and to improve rolling productivity. A connecting body that holds and connects the roll bearing box is provided to secure space and also to allow a roll polishing device to be attached to the connecting body.

The present invention will be explained based on FIGS. 1 to 5.

This rolling mill is comprised of four rolls, with a pair of upper and lower work rolls 2, 2' and reinforcing rolls 3, 3' incorporated inside a housing 1. Each roll 2.2', 3.
3' are held by a work roll bearing box 4.4' and a reinforcing roll bearing box 5.5', respectively, and can move up and down.

The work roll bearing box 4.4' is connected to the shift beam 6.4'.
A long shift cylinder 7 is provided between the shift beam 6 and the housing 1, and is sandwiched from both sides by 6', and is supported and connected to the shift beam 6. The long shift cylinder 7 is provided between the shift beam 6 and the housing 1. During rolling, an abrasive case 9 and an abrasive support 10 having a device (for example, a cylinder) for moving the abrasive and the abrasive 8 forward, forward, and backward are connected to an abrasive support fixed cylinder 1.
1, it is fixed to the shift beam 6 and moves as shown in FIG. 3 following the work cool shift. During polishing work, the work roll is shifted to the 9th position, and the abrasive material 8 is pressed against the paper work roll 2 by the cylinder pressure of the abrasive material case 9, thereby performing roll polishing. 1+, the cylinder 12 is installed on the shift beam 6 and moves beyond the gap between the No. 9 abrasive materials to eliminate unpolished areas between the grinders and improve the abrasiveness.
It is possible to move in the axial direction. When changing roles,
The abrasive material case 9 is retracted from the inner window of the housing l by the elastic connector 13 attached to the entrance guide 14, which maintains the abrasive pressure constant and retracts the grinder, resulting in the state shown in FIG. 5, and the work begins. 0 has a structure that does not interfere with the roll bearing box 4.4' and the reinforcing roll bearing box 5.5'.
The above is mainly true for upper work rolls, but the same applies to lower work rolls.

In this example, while pressing the abrasive material onto the a-ru surface,
Since it is possible to feed the abrasive material in the axial direction along its surface, local wear of the abrasive material itself can be prevented, and the wear of the threaded portion of the roll surface is gradually reduced, making it possible to maintain the state almost the same as immediately after the roll was reassembled. can. In addition, since the work is a shift operation, the control function of the wear profile of the rolling material passing section can be updated by simply polishing minute ridges on the surface of the roll.

According to the present invention, rolling schedules can be made flexible, the number of roll changes can be reduced, and rolling productivity can be improved.

[Brief explanation of drawings]

Figure 1 is an overall front view of the rolling mill, Figure 2 is ■-■ of Figure 1.
A cross-sectional view taken in the direction of the arrows, FIG.
This figure is a cross-sectional view taken along the line MM in FIG. 2, and FIG. DESCRIPTION OF SYMBOLS 1...Housing, 2...Work snow ring, 3...Reinforcement ■-le, 4...Work roll bearing box, S...Reinforcement roll bearing box, 6...Shift beam, 7...Long shift ) Tarinder, 8... Abrasive material, 9... Abrasive material case, 10
... Abrasive material support stand, 11... Abrasive support stand fixed cylinder, 12... Shicoat stroke cylinder, 13
...Banghaya l mouth second brutality j! -3rd mouth 4th mouth 5th prisoner

Claims (1)

[Claims] L During rolling, the 1-roll that can move in the axial direction and the bearing box that pivotally supports the opposing roll shafts on the working side and the driving side are mutually IAK.
A connecting body that is held and coupled and moves in conjunction with a moving I-ru;
- A self-rolling machine equipped with a polishing device, characterized in that the connecting body is equipped with an abrasive material marked with #, in a rolling mill having a polishing neck capable of polishing.