JPH03106506A - Adjusting method for making roll caliber center and pass line center of rolling mill coincident - Google Patents

Abstract

PURPOSE:To make a caliber center and pass line center coincident by diving on a housing the point in a constant distance from the end face of a roll, driving on a base plate the point where the constant distance is added to the distance of the roll end face from the pass line center to caliber center and fixing at the point where the both coincide. CONSTITUTION:A point showing the position in a constant distance measured toward the external part in the roll axial direction from the end face of the roll 3 integrated in a housing 1 is divided on the housing. A point showing the distance where the constant distance measured toward the roll axial direction external part from the end face of the roll is added to the distance from the reference point showing a preset pass line center 20 to the roll end face from the caliber center of the above roll is divided on a base plate 19. The housing is fixed to the base plate at the position where the point divided on the above housing and that divided on the base plate coincide. Thus the caliber center and pass line center can be made coincident correctly and yet in a short time.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to an adjustment method for aligning the center of a roll caliber and the center of a pass line in a rolling mill. [Prior art] When rolling long steel, the housing containing the rolling rolls is separated from the base plate, and the rolls are replaced together with the housing. Then, at a roll shop, the old roll is removed from the housing, a new roll is installed, the housing is attached to the base plate, and rolling is performed. In the roll reshuffling in the above-mentioned long steel rolling, the fifth
As shown in the figure, the center 32 of the housing 31 and the roll 33
The relative positions of the center 32 of the housing 31 and the center 34 of the roll 33 change each time the rolls are rearranged. This is the result of an accumulation of dimensional tolerances in the width of the bearing that supports the roll 33, manufacturing errors in the chock that holds the bearing, and manufacturing errors in fixed parts to prevent the roll from moving in the axial direction. The maximum cumulative error is 2 mm. Therefore, if you always align the center of the housing with the center of the pass line, consider the case where the force river is at the center of the roll.
A maximum deviation of 2 mm will occur between the center of the caliber and the center of the pass line, and in rolling steel bars, where the deviation between the center of the bus line and the center of the caliber is only 0.2 mm at most, this deviation can be avoided. Correction is an important element. [Problems to be Solved by the Invention] Conventionally, as a method for correcting the discrepancy between the center of the pass line and the center of the caliber, a worker looks into the roll from a guide device for the rolled material installed before and after the rolling stand. The position of the housing was adjusted until the caliber could be seen through this guide device.
For this reason, it took time to correct the position, and accurate alignment was not always possible, which had a negative effect on the dimensions and shape of the rolled steel bar. This invention solves the above-mentioned problems of the prior art,
The purpose of this invention is to provide an m adjustment method that allows the center of the bus line and the center of the caliber to easily match. [Means for Solving the Problems] An adjustment method for aligning the center of the roll caliber of the rolling mill and the center of the bus line according to the present invention is to adjust the center of the roll caliber of the rolling mill according to the present invention by adjusting a certain distance measured outward in the axial direction of the roll from the end face of the roll incorporated in the housing. The housing is marked with a point indicating the position of the bus line, and the distance from the center of the caliber of the roll to the end face of the roll is measured from the reference point set in advance on the base plate indicating the center of the bus line. The center of the caliber and the center of the pass line are used to fix the housing to the base plate at a position where the point marked on the housing matches the point marked on the base plate. This is a method to match. [Operation] The method of aligning the center of the caliber and the center of the pass line according to the present invention includes marking a point on the housing indicating a position at a certain distance measured outward in the axial direction of the roll from the end face of the roll incorporated in the housing. The base plate has a distance from a preset reference point indicating the center of the pass line to the distance from the center of the caliber of the roll to the end surface of the roll plus a certain distance measured from the end surface of the roll toward the outside in the roll axis direction. The indicated points are used as a scale, and the housing is fixed to the base plate at a position where the scale points on the housing and the base plate match. This was done for the following reasons. The distance from the scale on the housing to the center of the roll's caliber is the sum of the distance from the center of the caliber to the end of the roll plus a certain distance measured from the end of the roll, and since that distance is known, If you measure this known distance from a reference point indicating the center of the pass line, mark that point on the base plate, and match the point marked on the housing with the point marked on this base plate, you will inevitably find the center of the caliber. It will be located in the center of the bus line. Therefore, even if the axial position of the rolls changes within the housing each time the rolls are rearranged,
A point indicating the position measured a certain distance from the end face of the roll is marked on the housing each time, and the distance from the center of the caliber of the roll to the end face of the roll is measured from this point and the reference point indicating the center of the pass line of the base plate. By matching the points that indicate the distance plus a certain distance, you can accurately match the center of the bus line and the center of the caliber. [Example] An adjustment method for aligning the center of the roll caliber and the center of the bus line in a rolling mill according to an example of the present invention will be explained with reference to FIGS. 1 to 4. FIG. 1 is a front view showing a state in which a roll 3 having a caliper 2 is assembled into a housing 1. first,
A gauge 5 for measuring a certain distance (A) is applied to the end surface 4 of the assembled roll 3, and a point at a distance of A from the end surface 4 of the roll 3 is measured on the scale plate 7 provided at the bottom 6 of the housing 1. The indicator 8 of the gauge 5 indicates this. Scale plate 7
is made of stainless steel and has a width of 30 mL and a thickness of 3 mm, and as shown in Figure 2, scale lines 9 are drawn on its surface corresponding to each position in the roll axis direction of the caliper 2 of the roll 3. ．． The scale plate 7 can be moved in the axial direction of the roll 3 by a scale plate position adjustment device 10, as shown in FIG. That is, FIG. 3 is a side view of the scale plate position Tt adjustment device 10, and the operating state of this scale plate position adjustment device 10 will be explained as follows. That is, when the position adjustment screw 11 is turned, the adjustment bolt 12 rotates, but since this adjustment bolt 12 is not designed to move forward or backward, the adjustment nut screwed onto the adjustment bolt 12 rotates. 13 moves back and forth within a hollow part 15 provided in the support member 14. A connecting pin 16 is vertically attached above the adjusting nut 13, and as the adjusting nut 13 moves back and forth, this connecting pin l6 moves back and forth within a long hole l7 provided in the support member l4. ．． and,
By fitting this connection pin 16 into a hole 18 provided in the scale plate 7, the scale plate 7 can be moved back and forth. With this scale plate position y4 adjustment device 10,
Align the scale line 9 of the scale plate 7 with the position of the indicator 8 of the gauge 5. Normally, when the caliber is located at the center of the roll axis, the scale line 9 to be matched should be the scale line 9 corresponding to the caliper 2 located at the center. The scale should be set to &l9, which corresponds to caliper 2, which is located closest to . In this state, the housing 1 is fixed to the base plate 19 as shown in FIG. An indicator needle 2l is provided to indicate the distance from the caliber position corresponding to the scale I19 (distance A+B=C in the case of FIG. 1).
Then, while moving the housing 1 in and out (left and right in FIG. 4) using the hydraulic cylinder 22, the scale line 9 corresponding to the position of the indicator 8 of the gauge 5 on the scale plate 7 on the housing 1 is placed on the base plate l9. Align with indicator needle 21. In this way, the center of the caliber (the center of the caliber at or near the center of the roll) can match the center of the pass line, but if this caliber wears out and another caliber installed on the same roll is used, The housing 1 may be moved so that the scale line 9 corresponding to the caliber and the indicator needle 21 coincide with each other.The center of the roll caliber and the center of the pass line of the rolling mill according to one embodiment of the present invention are made to coincide with each other. Since the adjustment method is performed as described above, the center of the caliber and the center of the pass line can be brought into alignment accurately and in a short time, and the dimensions and shape of the bar can also be improved. [Effects of the Invention] With this invention, the center of the caliber and the center of the pass line can be aligned accurately and in a short time.

[Brief explanation of drawings]

Fig. 1 is a front view of the housing showing a state in which a fixed position is measured from the end face of the roll in an adjustment method for aligning the center of the roll caliber and the center of the pass line in a rolling mill according to an embodiment of the present invention, and Fig. 2 is a scale plate. The plan view and Figure 3 are the scale plate positions! l
II1 is a side view of the device; FIG. 4 is a plan view of the housing showing a state in which the indicator needle is aligned with the scale plate of the adjustment method for aligning the center of the roll caliber and the center of the pass line in a rolling mill according to an embodiment of the present invention; The figure is a front view of the housing showing that the center of the housing and the center of the roll do not match. DESCRIPTION OF SYMBOLS 1... Housing, 2... Caliber, 3... Roll, 5... Gauge, 7... Scale plate, 9... Scale line, 10... Scale plate position adjustment device,

Claims (1)

[Claims] The housing is marked with a point indicating the position at a certain distance measured outward in the axial direction of the roll from the end face of the roll incorporated in the housing, and the base plate is marked with a reference point indicating the center of the pass line set in advance. A point indicating the distance from the center of the caliber of the roll to the end face of the roll plus a certain distance measured from the end face of the roll toward the outside in the axial direction of the roll is marked on the scale, a point marked on the housing and a point marked on the base plate. An adjustment method for matching the center of a roll caliber of a rolling mill with the center of a pass line, the method comprising fixing a housing to a base plate at a position where they match.