JPH08243608A - Planetary rolling mill - Google Patents

Abstract

PURPOSE: To facilitate the controls of large draft and plate crown to a rolling stock to be rolled by a mechanism that many planetary work rolls with a small diameter, which are revolved around the outer periphery of a master roll, are rotated by a rotational means. CONSTITUTION: Upper side and lower side fixed master rolls 1 and 4 and upper side and lower side planetary work rolls 3 and 5 are arranged symmetrically up and down to a plate material 9. The crown of the upper side fixed master roll 1 in an orientation differs from that in a position obtained by rotating by an angle θ. It is curved in a projecting shape in a certain position, however, when the roll is rotated by 180 deg., it is curved in a recessed shape. The same thing can be said to the lower side fixed master roll 4. The upper side and the lower side planetary work rolls 3 and 5 are revolved around the outer peripheries of the upper side and the lower side fixed master rolls 1 and 4 while rotating by rotational means. However, by rotating and adjusting places to be pressed by the upper side and the lower side fixed master rolls 1 and 4, a plate crown can be controlled from recessed bending to projecting bending.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a planetary rolling machine provided with a large-diameter fixed parent roll and a large number of small-diameter planetary work rolls arranged on the outer periphery thereof.

[0002]

2. Description of the Related Art A conventional planetary rolling machine of this type has, for example, a structure as shown in FIG. In FIG. 6, 21 is an upper parent roll, 22 is a lower parent roll, 2
3 is an upper planetary work roll, 24 is a lower planetary work roll, 25 is a pushing roll, 26 is a looper, and 27 is a smoothing roll.

That is, an upper parent roll 21 which is also called a satellite planetary rolling mill and is a large diameter backup roll.
A large number of upper planetary work rolls 23 having a small diameter are arranged around the same, a lower planetary work roll 24 is similarly arranged around the lower parent roll 22, and the work rolls 23, 24 are revolved and rotated to roll the material to be rolled. The plate material 28 is rolled.

[0004]

In the conventional planetary rolling machine shown in FIG. 6, the plate 28 has the advantage of being subjected to reduction by a large number of planetary work rolls 23, 24 and achieving a large working rate in one pass. However, there is a problem that the plate crown cannot be controlled. The present invention is intended to solve such a problem. That is, an object of the present invention is to provide a planetary rolling machine capable of large reduction and easily controlling a plate crown.

[0005]

In order to achieve the above object, the present invention provides a large diameter fixed parent having different crowns at a fixed position and a position rotated from the fixed position by an angle about an axis. A roll and a plurality of small-diameter planetary work rolls arranged on the outer periphery of the parent roll and revolving around the outer periphery of the parent roll while rotating, and also having a rotation drive means for rotating the planetary work roll. And

[0006]

According to the present invention, a large diameter fixed parent roll having different crowns at a fixed position and a position rotated from the fixed position by an angle about the shaft is disposed on the outer circumference of the parent roll. With a large number of small diameter planetary work rolls that revolve around the outer periphery of the parent roll while rotating on its own axis, and since it has a rotation drive means for rotating the planetary work rolls, for large reduction of the material to be rolled, conventional It is possible in the same way as a planetary rolling machine.For control of the plate crown, rotate the parent roll to the desired crown,
Crown control is very easy because the parent roll need only be fixed in position and used.

[0007]

FIG. 1 is a side view showing an embodiment of the present invention. In FIG. 1, 1 is a large-diameter upper fixed parent roll, 2 is its axis, and 3 is a large number of small-diameter upper sides that are arranged on the outer periphery of the upper parent roll 1 and revolve around the outer periphery of the parent roll 1. Planet work rolls 4, a large-diameter lower fixed parent roll, 5 are arranged on the outer circumference of the parent roll 4, and a large number of lower planet work rolls of small diameter that revolve around the outer circumference of the parent roll 4 while rotating. 6 is a pushing roller, 7 is a looper, 8 is a smoothing roll, and 9 is a plate material to be rolled.

The upper fixed parent roll 1, the lower fixed parent roll 4, the upper planetary work roll 3 and the lower planetary work roll 5 are vertically symmetrical with the plate material 9 as a sakai. Here, the curved shape of the upper fixed parent roll 1, that is, the crown is different between the fixed position A and the position rotated from the fixed position A about the shaft 2 by a certain angle θ. The same applies to the lower fixed parent roll 4.

FIG. 2 is a front view showing the shape of the upper fixed parent roll 1 of FIG. 1 at a fixed position A. That is, it is convexly curved at this position.

FIG. 3 is a front view showing the shape of the upper fixed parent roll 1 of FIG. 1 at a position rotated from the fixed position A by 180 degrees. In other words, it is concavely curved at this position.

In this way, the curved upper fixed parent roll 1
Is fixed, and the upper work roll 3 surrounds the upper work roll 3 by rotating the position of the fixed upper fixed parent roll 1 under pressure.
The plate crown can be controlled from bending convex to bending concave. The same applies to the lower fixed parent roll 4 and the lower planetary work roll 5.

FIG. 4 is a partially cutaway front view showing the rotating mechanism of the upper planetary work roll 3 of FIG. 1, and FIG. 5 is a partially cutaway side view of FIG. 4 and 5, 10 is a drive transmission gear, and 11 is a small gear meshing with the drive transmission gear, which is connected to the shaft of the upper planetary work roll 3.

[0013]

As described above, according to the present invention,
A large diameter fixed parent roll having a different crown at a fixed position and a position rotated by a certain angle about the axis from the fixed position, and the parent roll is arranged on the outer circumference of the parent roll while rotating. It is provided with a large number of small diameter planetary work rolls that revolve around the outer periphery, and since it has a rotation drive means for rotating the planetary work rolls, it is possible to perform large reduction on the material to be rolled, as with the conventional planetary rolling machine. As for the control of the plate crown, it suffices that the fixed parent roll is rotated to the desired crown position and the parent roll is fixed and used at that position, so that the crown control is extremely easy. Is big.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a front view showing the shape of the upper fixed parent roll of FIG. 1 at a certain position.

FIG. 3 is a front view showing the shape at a position rotated by a certain angle from the fixed position.

4 is a partially cutaway front view showing a rotation drive mechanism of the upper planetary work roll of FIG. 1. FIG.

5 is a partially cutaway side view of FIG. 4. FIG.

FIG. 6 is a side view showing an example of a conventional technique.

[Explanation of symbols]

 1 Upper fixed parent roll 2 Axis 3 Upper planetary work roll 4 Lower fixed parent roll 5 Lower planetary work roll A Fixed position θ Certain angle

Claims (1)

[Claims] 1. A large diameter fixed parent roll having different crowns at a fixed position and a position rotated from the fixed position by an angle about a shaft, and is arranged on the outer periphery of the parent roll to rotate. However, the planetary rolling machine is provided with a large number of small-diameter planetary work rolls that revolve around the outer circumference of the parent roll, and has a rotation drive means for rotating the planetary work rolls.