JPS59209408A - Lateral supporter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Those skilled in the art of rolling mills will understand that cluster rolling mills and
9. The basic type of rolling mill and its various configurations and permutations are known, including what is referred to as a J mill.

Typical examples of this are U.S. Pat.
No., tjS2,479,974, tjS2,909,
No. 088, same! No. 13,128,650, No. 3,52
No. 3,439, No. 3,580,035, No. 3,6
No. 4,197,731, No. 4.248,073, No. 4.270,377, and No. 4,289,013). Three basic four-high rolling mills have evolved into rolling mills with various design features, but the basic components are generally the same. A pair of work rolls are mounted to engage the metal strip. The resulting gap between the rolls is such as to reduce the thickness of the strip as it passes through the rolling mill.

The work roll typically has a small diameter compared to the other rolls in the pressure Kfi. This is small) The roll is small)
This is because the effect of reducing the thickness for the +7p is even greater. Additionally, work rolls are typically loosely journaled at each end. That is, its ends are guided into vertical slots rather than mounted on fixed bearings.

Although the work rolls can be restrained and restricted in their vertical movement in a variety of ways, a common arrangement is for the work rolls to contact intermediate support rolls. The backing roll is typically three or more times larger in diameter, and the backing roll is often a driven roll, transmitting rotational motion to the work roll by friction. An even larger supporting roll is used behind the intermediate roll, thus making it possible to form a rolling allowance of six stages in one roll.

Although such rolls are sufficient to restrain the work roll vertically and, together with various roll bending and shaping devices, can impart the desired shape to the work roll in the strip, they are not susceptible to lateral forces. must also be addressed. That is, it is a force that opposes the lateral force component of the drive torque from the intermediate roll or support roll. For this reason, side support roll devices have been proposed, such as those described in U.S. Pat. No. 4,270,377. In this case, (Stri.
Side support rolls are provided on each side of the work roll (to allow rolling in both directions of the roll), each side support roll being restrained both vertically and laterally by two support roller assemblies. be done. Each bearing roller assembly includes an axial array of relatively short rollers mounted on a shaft by roller bearings. The shaft itself is supported at the bearing opening by a fixed structure.

Although this method does provide lateral support, it also has some undesirable characteristics. One is that the diameter dimensions of the two bearing roller assemblies are limited due to the vertical space available between the intermediate roller and the rolling strip.

The bearing roller assembly and its support members are relatively difficult to manufacture and expensive to manufacture. If the entire installation requires the use of small diameter bearing assemblies, this means that their replacement is relatively frequent and costly, as well as long mill downtimes. Alternatively, other expensive and complicated means must be provided to protect the bearing roller assembly from damage. Since the load capacity of small bearings is small, loading of rolling forces is quite common.

Other types of lateral force supports have similar problems, resulting in complex support systems having multiple rolls and other complex mechanical devices.

It is an object of this invention to be able to effectively counteract the components of lateral forces generated in rolling mills without limiting the types of work roll dimensions that can be utilized.
71 to provide a strong lateral support device.

Briefly, the invention relates to a rolling mill operation of the type having a substantially rigid frame supporting the rolls, and at least one vertically supported roll having an axis of rotation substantially in the same plane as the axis of the work rolls. Provide lateral support for the rolls. The apparatus includes a transverse support roll, a support roller assembly having a plurality of axially spaced rollers along an axis, and a support roller assembly having a frame contacting surface and contacting one side of the work roll. a substantially rigid mounting having means for rotatably supporting the transverse support roll and the rollers of the support roller assembly in contact with the transverse support roll; and the position of the supporting means is adjusted to align the centers of rotation of the work roll, the lateral support roll and the support row 2 assembly, thus directing the lateral resultant force to the work roll. It is composed of a combination of an axis line and a means for decomposing the frame into opening lines.

BRIEF DESCRIPTION OF THE DRAWINGS In order to provide a detailed understanding of the manner in which these and other objects are achieved in accordance with the invention, reference is now made to the drawings to illustrate a particularly preferred embodiment.

FIG. 11 is a side view of a typical rolling mill incorporating the apparatus of the present invention. Most of the rolling mills shown in Figure 1 are conventional, and their type is not particularly important to this invention.

Accordingly, this rolling mill will be described generally with the understanding that the invention is applicable to various other types of rolling mills.

The rolling mill shown in FIG. 1 includes a large frame 10 having pedestal flanges 11 which provide support for the rolling mill. Viewed from the side, the frame has a generally rectangular elongated opening 114 which receives and receives the upper and lower roller assemblies 16,18. One or both of these assemblies are intended for the purpose of accommodating work rolls of different dimensions and adjusting different dimensional relationships so that strips with different initial thicknesses can be processed. , hydraulic or other means20.
By 2J] Ti: Directly to the town 4J. Such a device is described in U.S. Pat. No. 3,974,674. It can be passed between the work rolls 25, 2 (3) alternately in the direction of the drawing force.
i￥: L < By means of a device consisting of support rolls shown, pressure is applied, shaped and constrained and passed through the opening of the work roll 25, 26 in the direction shown. The work roll is supported vertically by an intermediate roll 29.3o, which has a much larger diameter than roll 25.26. The intermediate roll is further supported vertically by a much larger support roll 32,33.

Support rolls 32,33 are supported by roller assemblies 16,18 described in connection with FIG.

As previously mentioned, the work rolls 25, 26 are attached to the strip 2
A gap sized between the work rolls 25.26 so as to be able to achieve the desired thickness reduction of 8. The rolls 29.30, 32.33 are very well suited to provide the vertical restraint as well as the pressure necessary to set up. However, as the stream passes between rolls 25.26, rolls 291.26, which are normally power driven rolls. ? o,! =19F Due to the frictional engagement, a lateral force is applied to the work roll. As previously mentioned, sets or other types of configurations of two or more transverse support rolls in contact with each side of each work roll have traditionally been used for this purpose. There is.

In this invention, lateral restraint on the roll 25 is provided by support rolls 34.35 on each side of the roll 25 and sets of bearing holes 37.38 on the outside of each roll 34.35, respectively.

These are also shown in Figures 3, 4, 5 and @7. As is common practice in this field, 25.29
．． Elongated rolls such as those shown at 32, 34, and 35 are represented by a circle drawn by a single line, and a set of bearing rollers 37, 38 is represented by a circle drawn by two concentric lines.

Lateral support for the work roll 26 is likewise provided by lateral support rolls 40.41 on either side of the work roll 26 and support roller assemblies 43.44 on the outside of the rolls 40, 41, respectively.

As is common with bearing roller assemblies, each assembly is supported by a glaze mounted on a framework, each having a support between an adjacent pair of bearing rollers, and an axial direction mounted in a bearing. It consists of a set of spaced apart rollers. The purpose of this arrangement is to carry the forces from the rolls 34, 35, 40, 41 and transmit them to the shaft via the roller assembly and the bearings just mentioned, and from this shaft to the framework supporting this shaft. The purpose is that the frame 10 will ultimately absorb such forces, so that the frame itself can abut the member forming part of the frame 10 to which it is attached. Frame 10 is constructed to be sufficiently robust to withstand such forces without noticeable deformation. However, since only one lateral support roll 34 or 35 is provided for the work roll 25 and one roll 40 or 41 is not provided for the work roll 26, in the direction of passage of the strip 28 Accordingly, unless the axes of rotation of each set of rolls are precisely aligned, resultant forces can occur that distort or push the rolls out of position. For this reason, when the strip is moving in the direction shown in FIG. , the axis of roll 26 must be aligned with the axis of roll 40.43. If this is not the case, the resultant force vector will almost certainly result in damage, or at least premature failure, of the component.

For this reason, the invention provides a device for supporting these parts and adjusting their mutual relationship. A diagram of this part of the structure is shown in Figure 13. The illustration shows strip 28
Only the inferior sacrum portion of the device on the underside is shown. Third
As can be seen, the work roll 26 contacts one yellow support roll 40.4, which contact the rollers of the dog support roller assembly 43.44. roll 4
1 and bearing roller assembly 44 are supported on a generally I-shaped cluster arm end support 46. .

Similarly, roll 40 and bearing roller assembly 43 are supported on cluster arm end supports 47. Support 4
6 is mounted on a shaft 48, and the support 47 is mounted on a shaft 49. As will be explained later, the shaft 48.4 is supported in such a way that the position of its center axis can be adjusted, so that the distance of the position of the axis from the strip can be varied so that the work rolls and supports can be adjusted. Adjust the relationship between the roll axes.

As seen in FIGS. 3, 5 and 7, arm 46
．． 47 is attached to the framework 51.52. Each of these frameworks has an arcuate surface 54,55, which forms the framework 10.
It is designed so that it comes into contact with the billow block attached to the frame L', which allows the force from the support roll to be directly applied to the frame L'.
Knee transmission. As shown in t53 diagram, roll 40.41
has an end bearing mounted in an end block 57.58 that fits into an elongated U-shaped opening 59.60 in the support 46.47. The bearings, end blocks and rolls are thus free to move toward and away from the axis of rotation of the work roll 26, but are restrained from vertical movement by the supports.

FIG. 5 shows various aspects of the structure of this invention.
A detailed explanation of this invention can be given when the diameter of the roll is changed. As can be seen in this figure, a bearing assembly 37 is attached to a cluster arm end support 67 which is supported by an axle 69, which cluster arm end support 66 supports a bearing roller assembly 38, and which supports an axle 69. It is supported by 68.

Shafts 68 and 69 each have splined sleeves 70° and 71
Each sleeve is a relatively short member that enters a mating splined opening in the movable intermediate roll axial box 75.1B. The center of the axis 68,69 will be
It is sufficiently eccentric so that the center of support of the associated cluster arm end support also changes. Sleeves 70, 71
The rotational position of 68 is determined by removing the retaining block from the outside, pulling the splined sleeve axially, rotating it a predetermined amount until the teeth re-engage, and reinserting the splined sleeve. or 6
It can be easily changed by doing this while supporting 9. This is a relatively quick and easy procedure as it is accomplished without adding any load to the machine. Preferably, the housing adjacent each splined sleeve is provided with markings, such as the arrows shown, and each sleeve is provided with indicia to enable adjustment of the predetermined amount to be accomplished. As shown, shafts 48,49 are similarly supported in splined sleeves 73,74, respectively.

arcuate surfaces 64 on which the frames of the bearing roller assemblies 37, 38 respectively contact replaceable pillow blocks 61, 62 mounted on members integrally connected with the frame 10 of the lifting machine;
．． 65 would be allowed.

The $5 diagram shows two cases in the upper part of the diagram.

The right side shows the case where the work roll has a radius R3 and the intermediate roll has a radius R1, and the work roll 25 and the roll 35
and the central axes of turns 11j of bearing roller assembly 38 are aligned. It is assumed that the equivalent rolls on the other side of this case are similarly aligned. Forces acting through the center of rotation of work roll 25 act generally along an inclined line through the center of rotation of roll 35, 38, arcuate surface 64, pillow block 62, and frame. Forces applied in opposite directions of the strips pass through the aligned centers as well.

Assuming that we have inserted a smaller work roll with a radius of 1 < 4, and further assume that we have removed the intermediate roll 29 and made it thinner to its radius R2, the net effect is that the center of rotation of the work roll 25 is directed upward. I don't mind moving. Of course, this upward movement widens the gap,
This involves lowering the entire upper part 16 of the machine, or F
It means that you need to have 1 lll 1 part. However, this raising and lowering has a similar effect on the entire device above the plane of the l-1) knob, and therefore,
It has no effect on the relationships described here.

A rise relative to the center of rotation of the work roll 25 results in disadvantages. This disadvantage is better illustrated in the vector diagram of FIG. As can be seen in this vector diagram, the angle θ2 caused by this change in radius generates a shearing force vector F3 that passes through the axis of roll 34 and pushes it downward, causing the axis of roll 25. There is a tendency to further deviate from the consistent state. If left in this condition, the bearings supporting the rolls at each end will not last long or other parts of the equipment will be damaged.

Therefore, when changing or grinding a roll and its radius is noticeably affected, at the same time the rotational position of the splined sleeve 70.71.73.74 is adjusted and
adjusting the center of support for all of the cluster earths, end supports, and thus raising and lowering the bearing roller assembly and its associated lateral support rolls;
The axes are realigned so that the forces are resolved and the lateral resultant force passes through the center of rotation, eliminating force vector F3. In the example shown in FIGS. 5 and 6, it is necessary to lower the arms 66,67.

Because surfaces 54, 55, 65, and 64 are not fixed to any part of the frame and because they are curved, these surfaces touch the associated pillow block in line with the lateral resultant force. New positions can be easily assumed. .

Therefore, the force is directly transmitted to the frame via the center line of the roll and does not cause riparian damage. Once the dimensions of the various parts involved are known, determining the amount of rotation required for this plined sleeve (to compensate for known changes in the radius of the work roll or intermediate roll) is a relatively simple geometrical exercise. That's a problem. Furthermore, in order to deal with work rolls of different diameters,
It will be appreciated that horizontal adjustments may also be required. This can be done by replacing the pillow blocks 61 and 62. Alternatively, mechanically adjustable means may be provided in place of the pillow block.

FIG. 7 is a partial side view taken along line 7--7, showing the position of shaft 49 and splined sleeve 74, behind which is intermediate roll 3o. As can be seen, the sleeve 74 is held in place by an end block 76 which can be easily removed to allow the splined sleeve to be pulled out axially. FIG. 7 also shows the framework 52 of the bearing roller assembly with the brush 243. An intermediate ground of the framework 52 at the opening of the roller has a contact surface 55;
This touches on the related Piro~Pro7ri.

As can be seen from the above description, the eccentric splined sleeve adjusting force formula described here uses only the - pair of support rollers as the ultimate support for lateral forces from work rolls of a wide variety of diameters. This provides the very important advantage of being able to This allows for a much wider selection of work roll diameters, which in itself is a very significant improvement.

Furthermore, the structural teeth of this invention have a much larger set of bearings a-
Although this increase in size could not be achieved with the space available in conventional configurations that required two sets of bearing roller assemblies, Due to the increased dimensions of the bearing roller assembly,
Lifespans are dramatically reduced, with expected lifespans being a non-linear function of size and increasing disproportionately to the amount of increase. For this reason, replacement of the bearing roller assembly, which is a very expensive part of the rolling mill, is a significant concern.

Hitherto, rolling mills that are generally symmetrical, i.e., the various rolls including the work rolls, have been used in rolling mills that are approximately the same above and below the plane of the
The present invention has been described with respect to a rolling mill that can be viewed as a mirror image.

However, the usefulness of the invention is not limited to this type of configuration. Some examples of other devices that can utilize this invention are ffs 8, 9, 10 and 11.
As shown in the figure. These are not intended to be exhaustive of the cases in which the invention may be utilized.

In the embodiment of FIG. 8, the work rolls 25,26 act on the strip passing in only one direction, which is a useful arrangement in many cases. The embodiment of FIG. 9, where asymmetrical thickness reduction, lamination or other processing is desired, is used on the upper side of the strip on a working roll 25, and on the lower side of the strip on a somewhat larger intermediate roll. is directly affected by

The embodiments shown in FIGS. 10 and 11 are similar to FIG. 9 in that only the upper surface of the strip 7 is subjected to the action of a small work roll, and the lower surface is subjected to the action of an intermediate roll in the case of FIG. 10. Therefore, in the case of FIG. 11, it is supported directly by a larger support roll. Any of these embodiments may be turned upside down or upside down.

Although a preferred embodiment has been described to illustrate the invention, it will be apparent to those skilled in the art that various modifications may be made within the scope of the invention.

[Brief explanation of the drawing]

FIG. 1 is a side view of a typical rolling mill using the support device of the present invention. FIG. 2 is a schematic diagram showing the arrangement of rolls in the apparatus of FIG. 1 in an enlarged side view; FIG. 3 is an enlarged side view of a portion of the apparatus of FIG. 1 including the apparatus of the present invention; FIG. 4 is an enlarged bottom view, partially in section, taken along line 4--4 in FIG. FIG. 5 is an enlarged side view of the support device of the present invention, illustrating its ability to be adjusted. FIG. 6 is a schematic representation of the bracing device of the invention, showing the associated force vectors. FIG. 7 is a partial cross-sectional view taken along line 7--7 in FIG. 5. Figures 8-11 are simplified side views of another roll machine in which the apparatus of the present invention can be used. (Explanation of main symbols) 10,,,frame 25.2B0. , work roll 29.30. ,,,vertical support rolls 34.35.40,41. ,,lateral support roll 37.
38.43.44. ,, bearing roller assembly 46.47.
66, B7. ,, cluster arm end support 48.49.68.69. ,, axis 70.71.73.74. ,, Splined Sleeve Patent Applicant's Representative 1;

Claims (1)

Claims: 1) A rolling mill of the type having a substantially rigid frame supporting the rolls and at least one vertical support roll having an axis of rotation substantially in the same plane as the axis of the work rolls. A lateral support device for a work roll, comprising: a lateral support roll; a support roller assembly having a plurality of axially spaced apart rollers along an axis; and a support roller assembly having a surface in contact with the frame;
a substantially rigid member having means for rotatably supporting said lateral support roll in contact with one side of said work roll and a roller of a curved support roller assembly in contact with said lateral support roll; The mounting includes a structure that aligns the centers of rotation of the work roll, the lateral support roll, and the support roll assembly with a means for supporting the structure to direct the lateral resultant forces on the work roll. Disassembled into the axis line and the opening line of the frame. and means for adjusting the position of said supporting means so as to adjust the position of said supporting means. 2. A lateral support device according to claim 1, wherein the attachment comprises a generally L-shaped member in construction having a generally vertical leg and a lateral load-bearing leg. including;
The horizontally extending leg has an elongated opening for receiving a rear NI bearing for rotatably supporting the horizontal support roll, and the vertical leg is on the opposite side of the horizontally extending leg. a lateral support device having a curved surface in contact with said frame; 3) In the lateral support device as set forth in claim 2, the attachment means means for supporting the structure is attached to the frame along an axis parallel to the work roll; a shaft further spaced from the path of the strip than the axes of the transverse support roll and the support roller, the adjusting means being mounted on the shaft and the mounting comprising an eccentric member supporting the structure; Lateral support device. 4) In the lateral support device according to claim 3, a second lateral support roll provided in mirror image relationship on the opposite side of the work roll, a support roller assembly, and a mounting structure. and a lateral support device having means for adjusting. 5) A lateral support device according to claim 3, comprising: a second work roll, a lateral support roll, a support roller assembly provided in mirror image relationship on the opposite side of the path of the strip; The attachment is a lateral support device with structure and means for adjustment. 6) A frame, a pair of opposing work rolls provided on both sides of the strip passage, and a main intermediate roll and a main intermediate roll provided for each work roll, the axis of rotation of which is substantially in the same plane as the work rolls. , four lateral support rolls, one on each side of each work roll and in rolling contact with the associated work roll;
four sets of support rollers in rolling contact with one transverse support roll; four support means each supporting one support roll and one set of support rollers respectively and having surfaces in contact with said frame; and means for adjustably supporting the means to enable the axis of rotation of each pair of support rolls in contact with each other and the set of support rollers to be aligned in a single plane with the axis of the associated work roll. Device. 7) a work roll adjacent to the path of the strip, at least one larger support roll having an axis of rotation vertically aligned with the axis of the work roll, and flanking and in contact with the work roll; a set of support rollers that are adjacent to and in contact with the transverse support roll; and a set of support rollers that adjustably support the set of the transverse support roll and the support roller; rolling apparatus having means for ensuring that the rotational axes of the rolls lie in the same plane with each other and with the work rolls. 8) In the rolling apparatus according to claim 7, a second lateral support roll located on the opposite side of the work roll and in contact with the work roll; and the second lateral support roll. a second set of support rollers which are in contact with the rolls, and adjustably support said second lateral support roll and said second set of support rollers so that their rotational axes are mutually aligned. 9) A rolling device having a work roll adjacent to the passage of the strip and a rotation axis vertically offset from the axis of the work roll. at least one larger support roll; a lateral support roll located beside the work opening and in contact with the work roll; and a lateral support roll located beside the lateral support roll and in contact with the lateral support roll. A rolling apparatus having a set of support rollers and means for adjustably supporting said set of said transverse support rolls and said support rollers so that their axes of rotation lie in the same plane with each other and with said work rolls. 10) In the rolling apparatus according to claim 9, a second work roll on the opposite side of the strip path and a first-mentioned work roll, a transverse first roll and a support roller are provided. a second lateral support roll disposed adjacent to said second work roller in mirror image relationship with said set of support rollers, and said second support roll and support row/union set; and means for adjusting the set.