JP3200992B2 - Rolling roll support structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support structure for a rolling roll in a rolling mill.

[0002]

2. Description of the Related Art As is well known, in a rolling mill, various methods for ensuring uniformity of the thickness of a rolled material in a sheet width direction, for example, a roll bending method for bending the axis of a rolling roll, and a rolling A roll shift method for shifting in the direction, a method in which the crown shape of a rolling roll is variable and controlled, and the like have been put to practical use, but among them, a roll cross method for crossing the axes of upper and lower rolling rolls is effective. It is said.

[0003]

By the way, both ends of the rolling roll are rotatably supported by bearings, and the bearings are mounted on an axle box, and these axle boxes are displaced vertically with respect to the housing. Although it is possible to mount the roll roll, the roll cross rolling mill adopting the above-mentioned roll cross method has a complicated structure for supporting the roll because the axle box must be displaced not only in the vertical direction but also in the rolling direction. It had to become something.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a roll roll supporting structure suitable for use in a roll cloth rolling mill.

[0005]

According to the present invention, an end of a rolling roll is rotatably supported by a bearing, the bearing is mounted on an axle box, and the axle box is vertically displaceable with respect to a housing. In the supporting structure of the rolling roll to be mounted, the bearing is configured to support the rolling roll in a pivotally mounted state, and the bearing is provided with an eccentric ring in which an outer diameter center axis and an inner diameter center axis are eccentric. The eccentric ring is rotatable with respect to the axle box about its outer diameter center axis, and the inner diameter center axis of the eccentric ring and the center axis of the bearing and the rolling roll. And the rolls can be crossed.

[0006]

In the present invention, the bearing for rotatably supporting the rolling roll also rotatably supports the rolling roll, and the bearing is mounted on the shaft box via an eccentric ring. And when the eccentric ring is rotated with respect to the axle box, the eccentric ring itself does not displace in any direction with respect to the axle box, but the rolling roll supported inside the eccentric ring is used for the bearing. The end portion is simultaneously displaced in the vertical direction and the rolling direction with respect to the axle box. That is, only the end of the rolling roll is displaced in the rolling direction without displacing the axle box in the rolling direction. The upper and lower rolling rolls can be crossed by displacing both ends of the rolling rolls in opposite directions.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of a rolling roll 1 whose both ends are supported by the support structure of the present embodiment (an intermediate portion is omitted), FIG. 2 is an enlarged view of one end thereof, and FIGS. FIG. 3 is a cross-sectional view of a portion (a cross-sectional view taken along line III-III and a cross-sectional view taken along line IV-IV in FIG. 1). The rolling roll 1 in this embodiment has a tapered piston 2 built therein so as to be movable in the axial direction of the rolling roll 1, and is configured to control the crown shape by moving the piston 2 by hydraulic pressure. Taper piston roll.

[0008] Both ends of the above-mentioned rolling roll 1 are rotatably supported by bearings 3 as in the conventional case, and the bearings 3 are mounted on an axle box 4, and the axle box 4 is attached to a housing (not shown). It is mounted so that it can be displaced in the up and down direction.
In this embodiment, the gap between the rolls is adjusted. In this embodiment, the rolling roll 1 is supported so as to be rotatable with respect to the bearing 3, and the bearing 3 is connected to the eccentric ring 5.
Are mounted on the axle box 4 via the.

That is, the bearing 3 is provided so that the bearings 6 are arranged along an imaginary spherical surface G as shown in FIG. It is not only rotatably supported around O1 but also rotatable in any direction, that is, supported so that the axis O1 of the rolling roll 1 can be inclined with respect to the bearing 3.

In addition, as shown in FIGS. 3 and 4, the eccentric ring 5 has an eccentric outer diameter center axis O2 and an inner diameter center axis O3 so that the thin portion 5a and the thick portion 5b face each other. Is a hollow cylindrical body. The eccentric ring 5 has its outer diameter center axis O2 aligned with the center axis O4 of the axle box 4 and is rotatable with respect to the axle box 4 about these axes O2 and O4. It is installed. The end of the rolling roll 1 is supported inside the eccentric ring 5 via the bearing 3. Naturally, both the central axis O5 of the bearing 3 and the central axis O1 of the rolling roll 1 are connected to the eccentric ring 5. Of the central axis O3.

As described above, the rolling roll 1 is rotatably and rotatably supported by the bearing 3, and the bearing 3 is mounted on the shaft box 4 via the eccentric ring 5, so that the eccentric ring 5 is formed. The upper and lower rolling rolls 1, 1 are rotated without rotating the axle box 4 in the rolling direction by rotating with respect to the axle box 4.
Can be crossed.

That is, when the eccentric ring 5 is rotated with respect to the axle box 4, the eccentric ring 5 itself is not displaced in any direction with respect to the axle box 4, but is supported inside the eccentric ring 5. The bearing 3 and the rolling roll 1 are rotated around the center axis O2 of the outer diameter of the eccentric ring 5 and the rolling roll 1 is rotated.
Are simultaneously displaced in the vertical direction and the rolling direction with respect to the axle box 4, and at the same time, the rolling roll 1 is connected to the bearing 3 and the eccentric ring 5.
And the axis O1 is inclined with respect to the shaft box 4. Therefore, if the axle box 4 is displaced in the up-down direction so as to compensate for the up-and-down displacement of the rolling roll 1 accompanying the rotation of the eccentric ring 5, the axle box 4 is not displaced in the rolling direction. Further, the rolling roll 1 can be displaced only in the rolling direction without displacing the rolling roll 1 in the vertical direction.

As shown in FIGS. 3 and 4, for example, the upper roll 1 is displaced to the left at one end, the lower roll 1 is displaced to the right at one end, and the upper roll 1 is reversed at the other end. Is displaced to the right and the lower roll 1 is displaced to the left, and if the eccentric amounts thereof are set to be equal, the two rolls 1, 1 can be crossed at the center position in the longitudinal direction. It is possible to control the thickness of the material in the width direction. In this case, the cross angle between the two rolling rolls 1 and 1 can be freely set by adjusting the amount of eccentricity at both ends of each rolling roll 1 and the amount of eccentricity adjusts the amount of rotation of the eccentric ring 5. This makes it possible to make optimal settings. Of course, the two rolling rolls 1 and 1 can be made parallel without crossing each other.

As described above, according to the above structure, the rolling rolls 1 and 1 can be crossed by rotating the eccentric ring 5 without moving the axle box 4 in the rolling direction.
The structure of the bearing portion can be sufficiently simplified as compared with a conventional general roll-cross type rolling mill in which it is indispensable to move the axle box 4 itself in the rolling direction, and it can contribute to a reduction in equipment costs and maintenance costs. .

The above embodiment is applied to a rolling roll having a configuration in which a crown shape is controlled by moving a built-in taper piston. The supporting structure of the present invention is such a rolling roll. Roll rolls in various rolling mills, such as a roll cross type, a bending roll type, or a roll shift type, or any combination of them. Needless to say, it can be widely applied to other types. And since the present invention has a simple structure that does not require the axle box to be moved in the rolling direction,
This is particularly preferable when employed in a case where a roll cross and a roll bending are performed simultaneously or a case where a roll cross and a roll shift are performed simultaneously.

[0016]

As described above, according to the present invention, the rolling roll is supported in a rotatable and rotatable state by a bearing, and the bearing is provided with an eccentric ring rotatable with respect to the axle box. Since it is a structure attached to the axle box through, the rolling roll can be displaced in the rolling direction without displacing the axle box in the rolling direction by rotating the eccentric ring with respect to the axle box. In addition to the fact that the rolling rolls can be crossed, there is an effect that the structure of the bearing portion can be greatly simplified as compared with a conventional roll cross rolling mill.

[Brief description of the drawings]

FIG. 1 is a plan view omitting an intermediate portion of a rolling roll supported by a structure according to an embodiment of the present invention.

FIG. 2 is an enlarged sectional view showing the same structure.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rolling roll 3 Bearing 4 Shaft box 5 Eccentric ring O1 Center axis of rolling roll O2 Outer diameter center axis of eccentric ring O3 Inner diameter center axis of eccentric ring O4 Center axis of shaft box O5 Center axis of bearing

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B21B 31/26 B21B 13/14 B21B 31/07

Claims (1)

(57) [Claims] 1. A rolling roll supporting structure in which an end portion of a rolling roll is rotatably supported by a bearing, the bearing is mounted on an axle box, and the axle box is mounted on the housing so as to be vertically displaceable. The bearing is adapted to support the rolling roll in a pivotally mounted state, and the bearing is mounted on the axle box via an eccentric ring in which an outer diameter center axis and an inner diameter center axis are eccentric. The eccentric ring is rotatable with respect to the axle box about its outer diameter center axis, and the center axis of the eccentric ring is aligned with the center axes of the bearing and the rolling roll to cross the rolls. And a support structure for a rolling roll.