JPH06277709A - Universal mill - Google Patents

Abstract

PURPOSE:To provide a height adjusting device for universal mills with which the height adjustment in the vertical direction of vertical rolls of a universal mill is rapidly changed by remote control and also adjustable range is widened. CONSTITUTION:The high adjusting device 37, which is composed of an upper liner 32 having a slope on its bottom, lower liner 31 which is oppositely brought into contact with the slope of the upper liner 32 by having a slope on its top and a driving device 35 for advancing and retreating with which the distance between the top of the upper liner 32 and the bottom of the lower liner 31 is made variable by sliding both the liners 31, 32 between mutual slopes, is arranged between the bottom of a housing 28 and the top of a sole plate 27.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a height adjusting device of a universal rolling mill, and more particularly, to a vertical roll of a universal rolling mill having a pair of horizontal rolls and a pair of vertical rolls having the same roll center position. The present invention relates to a height adjusting device for a universal rolling mill that can be arbitrarily changed on a rolling line.

[0002]

2. Description of the Related Art Conventionally, in order to produce an H-section steel by hot rolling from a bloom or a beam blank produced mainly by continuous casting, a material to be rolled can be efficiently targeted to a desired dimension,
In order to finish the shape, generally, as shown in FIGS. 5A and 5B, a breakdown rolling mill 11, a rough universal rolling mill group 14 including a combination of a rough universal rolling mill 12 and an edger rolling mill 13, and A dedicated manufacturing facility is used in combination with the finishing universal rolling mill 15 arranged downstream of this.

In this manufacturing facility, the rolled material such as the slab 1 shown in FIG. 6 (1), the bloom 2 shown in FIG. 6 (2) and the beam blank 3 shown in FIG. 6 (3) is first shown in FIG. Breakdown rolling mill 1 having a plurality of hole types 4 as shown
One roll is sequentially passed through to be processed until it has a shape suitable for intermediate rolling performed in a later step. Next, as shown in FIG. 8 (1), the roughly shaped material to be rolled has one or more rough universal rolling mills 12 each having a substantially H-shaped shape with horizontal and vertical rolls, and FIG. As shown in FIG. 2), after one or more intermediate rollings with one or more edger rolling machines 13 having upper and lower horizontal rolls each having a substantially H-shaped shape, as shown in FIG. Finishing Universal Rolling Machine 1 with H-shape by horizontal and vertical rolls 1
In No. 5, it is rolled in one pass into an H-shaped steel product having a desired size.

As shown in FIG. 9, a universal rolling mill used in rough rolling and finish rolling used in rolling the H-shaped steel, as shown in FIG. 9, has a pair of horizontal rolls 4 for vertically sandwiching a material to be rolled.
1 and 42, and a pair of vertical rolls 45 and 46 that sandwich the material to be rolled from side to side. Then, as shown in FIGS. 10 and 11, the center of the width of the flange 18f of the H-shaped steel 18 coincides with the roll centers of the vertical rolls 45 and 46, and the center of the rolls of the vertical rolls 45 and 46 is measured before and after the universal rolling mill. The vertical distance to the roll surface of the roller table 19 placed on the table is the width B of the flange 18f.
It is almost equal to 1/2. Therefore, even if the height Wi of the web 18w of the H-section steel 18 is the same, the flange 1
8f width B changes (eg web height = 700m
m, flange width = 300 mm from H-section steel, web height = 700 mm, flange width = 250 mm), and H-section steel 1
Since the center of the width B of the flange 18f of 8 and the roll center of the vertical rolls 45 and 46 deviate, it is necessary to remove the universal rolling mill from the line once and adjust the vertical level of the vertical rolls 45 and 46 in the roll shop. . Therefore, in this case, it is necessary to adjust the level by replacing the liner plate on the lower surface of the housing with a universal rolling mill whose height has been adjusted in advance, and it takes a lot of time and labor, so the rolling line can be used for a long time. There was a problem that productivity had to be significantly reduced because it had to be stopped for a long time.

Therefore, as a device for solving such a problem, there is a height adjusting device for a universal rolling mill introduced in Japanese Patent Laid-Open No. 59-174205. As shown in FIG. 14, this height adjusting device inserts a liner 86 between the projection 87 formed on the roll chock 84 of the vertical rolls 45 and 46 and the chock guide 82, and inserts and removes the liner 86 to move the vertical roll. Height adjusting devices have been introduced that move 45 and 46 up and down.

However, the above-mentioned Japanese Patent Laid-Open No. 59-1742.
Since the height adjusting device disclosed in Japanese Patent Publication No. 05 is a so-called offline type in which the vertical level cannot be adjusted unless the vertical roll is taken out from the housing of the rolling mill together with the roll chock, the level adjustment is still troublesome. There was a problem of this. Further, there is a problem that the upper and lower levels can be adjusted only by the thickness of the liner, and the adjustment range is very narrow and the practicability is poor.

In view of this, in this regard, in the newly established rolling mill, table rollers are arranged in front of and behind the universal rolling mill so as to elevate and lower the material to be rolled according to the change of the flange width of the H-section steel, and the universal rolling mill is installed. A lifting device is installed between the main body of the machine and the sole plate that mounts and fixes this universal rolling machine, and this device eliminates the deviation of the roll center according to the flange width. Measures are taken so that H-shaped steel having a width can be rolled.

However, in the existing equipment, in order to provide an expensive lifting mechanism for the entire table roller corresponding to the as-roll length of the material to be rolled during rolling, the equipment cost is significantly increased and it cannot be easily modified. was there. Further, in the existing rolling mill, there is a limit to the space for arranging the vertical roll elevating device, and the present situation is to deal with it by partially changing the vertical rolls or the stands.

Therefore, in order to solve such a problem, the applicant of the present invention has previously described, as shown in FIG. 12, the housing 28 of the universal rolling mill and the vertical rolls 45 and 46.
The wedge-shaped slide plates 83a to 83d, which are arranged in opposite directions to each other, are provided in the upper and lower gaps formed between the slide plates 83a to 83d.
The universal rolling mill in which the driving means 80a to 80d for moving back and forth in each gap are connected is introduced.

Further, the applicant of the present invention, as shown in FIG.
The universal rolling mill housing 28 is attached and detached to and from the sole plate 27 via the liner plate 70. An attachment / detachment mechanism is used to move the housing 27 up and down together with the vertical rolls 45 and 46. The universal rolling mill provided with the spacer liner mounting mechanism 88 for moving the spacer liner 52 into and out of the gap generated therebetween has been introduced.

[0011]

However, in the conventional example shown in FIG. 12, the vertical rolls 45 and 4 are operated by remote control.
6 can be moved up and down, but the housing 27 needs to be machined, which makes it difficult to apply it to the existing universal rolling mill. Also, in the conventional example shown in FIG. 13, the vertical rolls 45 and 46 can be moved up and down by remote control, but the height is only the pitch of the thickness of the liner plate 70 inserted between the sole plate 27 and the lower surface of the housing 28. There was a problem that the adjustment range could not be adjusted and the adjustment range was extremely narrow.

An object of the present invention is to solve such a conventional problem, and it is possible to quickly change the vertical height adjustment of a vertical roll of a universal rolling mill by remote control. In addition, it is an object of the present invention to provide a universal rolling mill that can have a wide adjustment range and that is provided with a height adjusting device that does not require processing on the housing.

[0013]

In order to achieve this object, a universal rolling mill according to the present invention has a height adjusting device interposed between an upper surface of a sole plate and a housing and an inclined surface on the lower surface. An upper liner having an upper surface, an upper surface having an inclined surface, a lower liner facing and in contact with the inclined surface of the upper liner, an upper surface of the upper liner and a lower surface of the lower liner by sliding both liners between the inclined surfaces. And an advancing / retreating drive device for changing the distance.

[0014]

According to the present invention, in order to raise the housing with respect to the sole plate, the raising / lowering mechanism once raises the housing to a height higher than the predetermined raising position, and the advancing / retreating drive device is operated to operate the upper liner and Move relative to the lower liner. This relative movement can increase the total thickness of the upper liner and the lower liner if both liners move up the inclined surface. The height of the direction can be adjusted. Here, the housing is lowered by the elevating mechanism to apply the load of the housing on the upper surface of the upper liner, and the work of raising the housing with respect to the sole plate is completed. The lowering operation of the housing may be carried out by reversing the relative movement of the both liners and reducing the total thickness of both liners.

As described above, by raising and lowering the housing, the roll center of the vertical roll can be set to the center in the height direction of the material to be passed, and this setting is performed by the operation of the raising and lowering mechanism and the forward / backward drive device. It can be done easily.

[0016]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is an overall front view in which a part of a universal rolling mill according to an embodiment of the present invention is omitted, and FIG.
FIG. 3 is a side view in which a part of FIG. 1 is omitted, and FIGS. 3 and 4 are diagrams showing a main part of the universal rolling mill shown in FIG.

As shown in FIGS. 1 and 2, a sole plate 27, which is a component of the present invention, is fixed on a pair of foundations 26 fixed to the ground, and the upper ends of both sole plates 27 are fixed. Are integrally formed with flanges 27a in opposite directions. An upper liner 32 having a base portion 29 forming a part of the housing 28 and having an inclined surface on the lower surface on the upper surfaces of these flanges 27a;
It is placed via a lower liner 31 which has an inclined surface on the upper surface and is in contact with the inclined surface of the upper liner 32 so as to face it.
That is, the housing 28 includes both the liners 31 and 3
It is mounted on the sole plate 27 via the plate 2. More specifically, the lining plate 33 is interposed between the upper liner 32 and the base portion 29, and the lining plate 34 is also interposed between the lower liner 31 and the flange 27a.

An advancing / retreating member 36, which is connected to an advancing / retreating drive device 35 composed of a cylinder device installed on the base portion 29, is connected to the upper liner 32, and the upper liner 3 is connected to the advancing / retreating member 36.
2 is configured to be slidable on the lower liner 31 in the direction of moving up and down the inclined surface. Due to this sliding, the total thickness of the upper liner 32 and the lower liner 31 changes, and the housing 28 moves up and down with respect to the sole plate 27. Therefore, the liners 31 and 32, the advancing / retreating drive device 35, and the advancing / retreating member 36 constitute a height adjusting device 37 which is a constituent member of the present invention.

The housing 28 has an upper chock 3
8 and the lower chock 39 are respectively supported so as to be able to move up and down.
And 42 are installed. The housing 28 supports the respective chocks 43 on the left and right sides of the material 44 to be rolled so as to be movable in the width direction of the material 44 to be rolled, and the chock 43 individually supports the vertical rolls 45 and 46. ing. Thus, each roll 41, 42, 45 and 46
Of the rolling material 44 corresponds to changes in the rolling dimension of the material 44 to be rolled. The housing 28 itself and each roll 4
Since the configurations of 1, 42, 45 and 46 are well known, detailed description thereof will be omitted.

The lower surface of the base portion 29 of the housing 28 forms an inclined surface with the outer end of the base portion 29 positioned higher, and below the base portion 29, another lower flange 47 of the housing 28 is provided. Are integrally molded. A horizontal hole 48 is formed through the housing 28 between the base portion 29 and the lower flange 47. In the slide guide 49 on the inner surface of the hole 48, a slide block 51 having a lower portion longer than an upper portion is housed so as to be movable back and forth toward the sole plate 27.
A spacer liner 52 having an inclined surface corresponding to the inclined surface of the lower surface of the flange 27a is fixed to the upper surface of the lower outer end of the slide block 51. By pressing the flange 27a of the sole plate 27 from below by the spacer liner 52, the flange 27a is sandwiched between the spacer liner 52 and the base portion 29, so that the housing 28 is fixed to the sole plate 27. There is.

At the back of the slide block 51, a cylinder device 54 is supported on a support member 53 fixed to the housing 28 by means not shown, and an advancing / retreating member 55 that is advanced and retracted by the cylinder device 54 is provided on the slide block 51. The spacer liner 52 can be retracted from the lower surface of the flange 27a of the sole plate 27 by driving the cylinder device 54.

Further, a wheel 56 is rotatably mounted on the lower surface of the housing 28, and a lifting mechanism 57 is fixed to the sole plate 27 below the wheel 56.
The cylinder device which is erected as is arranged. An elevating rail 58 is attached to the upper end of the piston rod of this cylinder device, and this supports the wheel 56 from below, and the housing 2 is expanded and contracted by the piston rod.
8 is configured to be able to move up and down.

Next, a specific operation of rolling the H-section steel using the universal rolling mill according to this embodiment will be described with reference to the drawings. First, as shown in FIG. 5, the material 44 to be rolled which is roughly shaped by the breakdown rolling mill 11 is formed.
Is a rough universal rolling machine 12 at the roller table 19.
Be transported to.

At this time, the rough universal rolling mill 12 sets the rolls 41, 4 to a height corresponding to the size of the H-shaped steel to be manufactured.
2, 45 and 46 are placed and fixed on the flange 27a of the sole plate 27 by the following method so that they are positioned. First, the elevating mechanism 57 is operated to move the elevating mechanism 57.
The piston rod housed in the cylinder is raised to raise the elevation rail 58, and the elevation rail 58 supports the wheels 56 of the rough universal rolling mill 12 from below,
Further, the piston rod is raised to position the housing 28 above the upper surface of the flange 27a of the sole plate 27.

Next, in this state, the housing 28 is moved to a predetermined position on the elevating rail 58 using the wheels 56 by another traction device (drive device) not shown, and the rough universal rolling mill 12 is moved to a predetermined position. To be installed. Then
The direction in which the upper liner 32 and the lower liner 31 move up the inclined surface by remote control so that the roll centers of the vertical rolls 45 and 46 housed in the housing 28 have a height corresponding to the dimensions of the H-shaped steel to be manufactured. The upper liner 3
2 and the lower liner 31 are moved relative to each other and fixed at a desired position. In other words, the relative movement of the upper liner 32 and the lower liner 31 can increase the total thickness of the liners 31 and 32, and thus the height of the housing 28 relative to the sole plate 27 can be set. As a result, the roll center height of the vertical rolls 45 and 46 can be easily adjusted according to the dimensions of the H-section steel to be manufactured. On the other hand, the horizontal rolls 41 and 42 adjust the roll center height by the same method as the conventional one.

Next, the piston rod housed in the cylinder of the lifting mechanism 57 is lowered to bring the lower surface of the base portion 29 of the housing 28 into the lining plate 33, the upper liner 32, the lower liner 31, and the lining plate 34.
It is placed on the flange 27a of the sole plate 27 via. Next, the cylinder device 54 is actuated to move the slide block 51 forward in the direction of approaching the sole plate 27, the spacer liner 52 is inserted into the lower surface of the flange 27a, and the spacer liner 52 presses the flange 27a from below. In this way, the upper surface of the flange 27a is formed by the base portion 29 via the lining plate 33, the upper liner 32, the lower liner 31 and the lining plate 34, and the lower surface of the flange 27a is formed by the lower flange 47 via the spacer liner 52. Fix by pinching. Then, the lifting mechanism 57 is returned to the original position.

In the rough universal rolling mill 12, as shown in FIG.
As shown in, the lower end of the flange 44f of the material to be rolled 44 is on the roller table 19, and the center of the flange width and the roll centers of the vertical rolls 45 and 46 of the rough universal rolling mill 12 are aligned. That is, the sole plate 2
7 from the upper surface of the flange 27a of the vertical rolls 45 and 46
Distance H ₁ to the roll center of the
The distance H ₂ from the lower surface of the roller to the roll centers of the vertical rolls 45 and 46 has a constant value.

In FIG. 2, the rough universal rolling mill 1
2 is placed on the flange 27a of the sole plate 27,
The distance from the lower surface of the housing 28 to the upper surface of the flange 27a of the sole plate 27 is h. The material 44 to be rolled conveyed to the rough universal rolling mill 12 is rolled here until it has a predetermined cross-sectional shape. After that, the rolled material 44 is processed by the edger rolling mill 13
And, through the finishing universal rolling mill 15, it is formed into an H-section steel having a predetermined size. At this time, the finishing universal rolling mill 15 is also provided with a height adjusting device similar to that of the rough universal rolling mill 12, and by the same method, the roll center of the vertical roll is raised according to the dimensions of the H-shaped steel to be manufactured. Set to Also, the roll center of the horizontal roll is set to a height according to the dimensions of the H-section steel manufactured by the same method as the conventional method.

Next, the height of the web is the same as that of the H-section steel.
The flange width is increased by 2α with respect to the H-section steel.
Rolling shaped steel using the same rough universal mill 12
The case will be described. The rough universal rolling machine
In the case of No. 12, as described above, the flap of the sole plate 27 is
Rolls of vertical rolls 45 and 46 from the upper surface of
Distance H to the center₁And the bottom of the housing 28
Distance from the roll center of the vertical rolls 45 and 46 to
Distance H₂Is a constant value. Therefore, the H-shaped steel frame
When rolling such as changing the width of the lunge
Is below the flange 44f of the rolled material 44 according to the changed value.
From the end to the upper surface of the flange 27a of the sole plate 27
Distance H ₃Will be changed. For this reason,
To continue using the Versal rolling mill 12 as it is, H type
Vertical rolls 45 and 46 are installed according to the width of the steel flange.
With respect to the upper surface of the flange 27a of the rule plate 27.
You need to let it go.

Here, the horizontal rolls 41 and 42 do not pose a particular problem because they can be freely and relatively quickly moved up and down by adjusting the roll rolling mechanism. H increased by 2α in flange width compared to the previously rolled H-section steel
In order to roll the shaped steel, as shown in FIGS. 3 and 4, from the lower surface of the housing 28, the flange 2 of the sole plate 27 is
It is necessary to increase the distance to the upper surface of 7a by α to be h + α.

In this case, first, the cylinder device 54 is operated to move the slide block 51 into the sole plate 27.
And the spacer liner 52 from the space between the base portion 29 of the housing 28 and the lower flange 47.
And the housing 28 is released from the sole plate 27. Next, the elevating mechanism 57 is operated to operate the elevating rail 5.
8 and the wheels 56 of the rough universal rolling mill 12 are supported from below by the elevating rails 58, and the piston rod is further raised to move the housing 28 to the sole plate 27.
It is located above the upper surface of the flange 27a.

Next, in this state, both liners 31 and 32 are moved in the direction in which both liners 31 and 32 rise on the inclined surface until the total thickness of the upper liner 32 and the lower liner 31 becomes α thicker than the above by remote control. After moving relative to, fix. In this way, the housing 28 was further raised by α from the upper surface of the flange 27a of the sole plate 27, and the distance from the lower surface of the housing 28 to the upper surface of the flange 27a of the sole plate 27 was set to h + α. The horizontal rolls 41 and 42 adjust the roll center height in the same manner as the conventional one.

Then, the piston rod housed in the cylinder of the lifting mechanism 57 is lowered to move the housing 28.
The lower surface of the base portion 29 of the lining plate 33, the upper liner 32, the lower liner 31 and the lining plate 3
4 is placed on the flange 27a of the sole plate 27 via the base plate 4 and the base portion 29 and the lower flange 47 in the same manner as described above.
Thus, the housing 28 is fixed to the sole plate 27 with the flange 27a interposed therebetween, and then the elevating mechanism 57 is returned to the original position.

As described above, since the roll center heights of the vertical rolls 45 and 46 can be arbitrarily adjusted by the remote operation of the height adjusting device 37, it is possible to easily achieve the roll chance free of the flange width of the H-section steel. Became possible. Therefore, the horizontal rolls 41 and 42, the vertical roll 4
It became unnecessary to change the combination of Nos. 5 and 46 and the liner plate below the sole plate 27, and it was possible to shorten the line stop time and significantly improve the operation rate.

Since the edger rolling mill 13 is composed of only horizontal rolls arranged above and below and the roll center position of the horizontal rolls can be freely changed, there is no roll chance for the flange width. There is no particular problem in achieving it. Next, after the H-shaped steel having a web height of 700 mm and a flange width of 200 mm is rolled using the rough universal rolling machine 12 provided with the height adjusting device 37 according to the present embodiment, the web height =
When H-section steel with 700 mm and flange width = 250 mm was rolled, the gap between the lower surface of the housing 28 and the upper surface of the sole plate 27 could be changed in about 5 minutes. This is about one-fifth of the time required in the prior art, and the line stop time was extremely shortened. Furthermore, it was confirmed that the quality and dimensions of the obtained product (H type steel) had no problem at all.

In this embodiment, the method of increasing the distance from the lower surface of the housing 28 to the upper surface of the flange 27a of the sole plate 27 has been described, but the present invention is not limited to this.
It goes without saying that the height adjusting device according to the present invention can be applied to the case where the distance from the lower surface of the housing 28 to the upper surface of the flange 27a of the sole plate 27 is narrowed. In this case, if the upper liner 32 and the lower liner 31 are moved relative to each other in the direction in which the liners 31 and 32 descend on the inclined surface, the total thickness of the upper liner 32 and the lower liner 31 may be reduced by a necessary value. Good.

Further, the height adjusting device 37 according to the present invention is
The lower liner 31 may be fixed and the upper liner 32 may be moved relatively, or the upper liner 32 may be fixed and the lower liner 31 may be moved relatively. Also, both liners 31 and 32 may be moved relative to each other. In addition, although the universal rolling mill provided with the height adjusting device 37 is described in the present embodiment, the height adjusting device according to the present invention is not limited to this and is provided between the sole plate and the housing of the existing universal rolling mill. The device 37 may be installed.

[0038]

As described above, in the universal rolling mill according to the present invention, the height adjusting device has the upper liner having the inclined surface on the lower surface and the inclined surface of the upper liner having the inclined surface on the upper surface. The upper liner and the lower liner are composed of a lower liner that is in contact with the upper liner and a lower drive unit that slides the two liners between the inclined planes to change the distance between the upper surface of the upper liner and the lower surface of the lower liner. By moving both liners relative to each other in the direction of moving up the inclined surface, the total thickness of both liners can be increased, and the housing can be raised by the increased thickness with respect to the sol plate. Further, by moving the both liners relative to each other in the direction in which the upper liner and the lower liner go down the inclined surface, the total thickness of both liners can be reduced, and the housing is lowered by the reduced thickness with respect to the sol plate. I can do it.
As described above, the housing can be easily moved up and down by operating the elevating mechanism and the advancing / retreating drive device. As a result, the roll center of the vertical roll can be easily set to the center in the height direction of the material to be passed. . As a result, it is possible to quickly change the height adjustment of the vertical rolls of the universal rolling mill in the vertical direction by remote control,
It is possible to provide a universal rolling mill that can have a wide adjustment range and that has a height adjusting device that does not require processing on the housing.

[Brief description of drawings]

FIG. 1 is an overall front view with a part of a universal rolling mill according to an embodiment of the present invention omitted.

FIG. 2 is a side view with a part of the universal rolling mill shown in FIG. 1 omitted.

FIG. 3 is a view showing a main part of the universal rolling mill shown in FIG.

FIG. 4 is a view showing a main part of the universal rolling mill shown in FIG.

FIG. 5 is a schematic diagram of rolling equipment for H-section steel.

FIG. 6 (1) is a sectional view of a slab. (2) is
It is sectional drawing of a bloom. (3) is a sectional view of the beam blank.

FIG. 7 is a diagram showing a shape of a hole type used in rolling H-shaped steel.

FIG. 8 (1) is a diagram showing a rolling situation by a rough universal rolling mill. (2) is a figure which shows the rolling condition by the rolling mill by an edger rolling mill. (3) is a figure which shows the rolling condition by a finish universal rolling mill.

FIG. 9 is a diagram showing an arrangement state of rolls of a universal rolling mill.

FIG. 10 is a front view of H-section steel.

FIG. 11 is a view showing a relationship between a flange width center of H-section steel and a roll center of a vertical roll.

FIG. 12 is a sectional view showing a part of a conventional universal rolling mill.

FIG. 13 is a sectional view showing a part of a conventional universal rolling mill.

FIG. 14 is a cross-sectional view showing a part of a conventional universal rolling mill.

[Explanation of symbols]

 11 Breakdown rolling mill 12 Rough universal rolling mill 13 Edger rolling mill 14 Rough universal rolling mill group 15 Finishing universal rolling mill 26 Foundation 27 Sole plate 28 Housing 29 Base part 31 Lower liner 32 Upper liner 35 Forward / backward drive device 36 Forward / backward member 37 High Adjusting device 41 Horizontal roll 42 Horizontal roll 44 Rolled material 45 Vertical roll 46 Vertical roll 47 Lower flange

Claims (1)

[Claims] 1. A housing of a universal rolling mill, comprising a pair of horizontal rolls for sandwiching a material to be rolled from above and below and a pair of vertical rolls for sandwiching the material to be rolled from left and right,
In a universal rolling mill, which is mounted on an upward surface of a sole plate via a height adjusting device, and is provided with an elevating mechanism for elevating the downward surface of the housing, wherein the height adjusting device has an inclined surface on the lower surface. An upper liner having an upper surface, an upper surface having an inclined surface, a lower liner facing and in contact with the inclined surface of the upper liner, an upper surface of the upper liner and a lower surface of the lower liner by sliding both liners between the inclined surfaces. The universal rolling mill is characterized by comprising an advancing / retreating drive device that makes the distance of the variable.