TWI247633B - Cross-rolling rolling machine and method of using same - Google Patents

Abstract

This invention provides a cross-rolling rolling machine that is of a simple construction, low installation cost and high reliability, while preventing position displacement within the gaps of the roll-chocks, and a rolling method by using the cross-rolling rolling machine. When rolling the material to be rolled, working roll-chocks 3, 4 are forced towards working rolls 1 by springs 21 while performing the rolling operation. Or, back-support roll-chocks 5, 6 are forced towards working rolls 2 by springs 25 while performing the rolling operation.

Description

1247633 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cross roll rolling mill and a rolling method using the cross roll rolling mill. [Prior Art] The cross roll rolling mill is characterized in that the material to be rolled is rolled in a state in which the upper and lower work rolls are formed to intersect. Fig. 1 2 (a) and Fig. 1 2 (b) show the positional relationship between the upper and lower work rolls and the material to be rolled. Fig. 1 2 (a) is a plan view, and Fig. 12 (b) is a side view. As shown in Fig. 1 2 ( a ), the upper and lower work rolls 1 0 1 are arranged such that the center portion in the width direction of the material S to be rolled is the intersection center (intersection point) c at a specified intersection angle 0 (variable). And the state of intersection. Thereby, as shown in Fig. 12 (b), the opening degree a of the upper and lower work rolls 1 0 1 near the intersection c is different from the opening degree b of the upper and lower work rolls 1 0 1 near the roll end, and works up and down. The degree of opening of the roll 101 is related to the distribution in the width direction of the material S to be rolled, and is a quadratic curve as shown in Fig. 13 . If the crossing angle 0 is increased, the inclination of the convexity under the quadratic curve becomes steep, and if the crossing angle β is decreased, the inclination of the convexity below the secondary curve becomes gentle. When the crossing angle 0 is 0, the opening degree of the upper and lower work rolls becomes constant. The cross rolling mill has the previous rolling mill. During the rolling, as shown in Fig. 14 (a), the upper and lower work rolls 1 0 1 and the upper and lower back rollers 10 are caused by the rolling load. In the bending of 2, the thickness distribution of the material to be rolled S tends to be thick at the center portion and thick at the end edge. However, in the cross roll rolling mill, by setting the aforementioned crossing angle 0 to an optimum value, the opening degree of the upper and lower work rolls 1 〇 1 of 5 312 / invention specification (supplement) / 93-05/93107638 1247633 is made. Formed as the optimal quadratic curve to compensate the bending amount of the upper and lower work rolls 1 0 1 and the upper and lower back idle rolls 1 0 2 so that the rolled material S can be rolled as shown in Fig. 14 (b). The wide-width plate thickness distribution after the system is nearly uniform, and the plate thickness accuracy can be improved. Therefore, in recent years, whether it is hot rolling or cold rolling, it is inclined to provide a plurality of cross roll rolling mills. Fig. 15 shows an outline of the main constitution of the cross roll rolling mill. Here, it is said that one side of the motor on which the upper and lower work rolls 1 0 1 are driven is the drive side, and the part on the opposite side of the operator on the work side is the operation side. The rotating shaft of the upper work roll 1 0 1 is supported to be rotatable by a pair of upper work roll chocks 1 0 3 on the drive side and the operation side. The rotary shaft of the lower work roll 1 Ο 1 is supported to be rotatable by a pair of lower work rolling light bearing seats 1 0 4 on the drive side and the operation side. Further, the rotation axis of the upper back roller 10 2 disposed above the upper work roll 1 0 1 is supported to be rotatable by the pair of upper back roller chocks 1 0 5 on the drive side and the operation side. The rotating shaft of the lower back idler 1 0 2 disposed under the lower work roll 1 Ο 1 is supported to be rotatable by a pair of lower back idler chocks 106 on the drive side and the operation side. In the cross roll rolling mill, unlike the conventional rolling mill, the upper and lower backing roller bearing housings are held in the conveying direction of the material S to be rolled and the reverse direction thereof, and the upper and lower back roller bearing housings are operated up and down. The cross heads 1 0 7 and 1 0 8 in the form of roll chocks 1 0 3 and 104 are driven by the conveying direction of the material S to be rolled as indicated by the large arrow in Fig. 15. 7, 1 0 8, combined drive upper work roll 1 Ο 1 and upper back idle roll 1 0 2, lower work roll 1 Ο 1 and lower back idle roll 1 0 2, set to the aforementioned intersection angle 0. The combined work upper work roll 1 〇1 and upper back idle roll 6 312 as shown in Fig. 15 / invention manual (supplement) / 93-05/93107638 1247633 1 〇 2, lower work roll 1 01 and lower back support The method of the roller 1 Ο 2 is called a pair-crossing mode, and the manner of driving only the upper and lower work rolls 1 0 1 is a separate way of working rolling. Further, it is said that the cross head is disposed on either of the drive side and the operation side, and the cross head side is arranged to be crossed, and the side of the opposite side is pivoted in a single cross mode (the cross side of the drive side of the upper roll) At the time of the operation of the lower roll, there is a crosshead). The cross roll rolling machine shown in Fig. 15 corresponds to the above, in which the upper work roll 1 0 1 and the upper back idle roll are hung from the conveyance direction of the material S to be rolled and the reverse direction thereof. In the form of the upper working roll chock 1 0 3 on the drive side of the 1 0 2 and the upper bearing post 1 〇 5, the cross head 1 0 7 is arranged and the conveying direction from the material S to be rolled and its opposite direction The cross head 1 0 8 is disposed in the form of a lower work roll chock 1 〇 4 and a lower back idler chock 1 0 6 disposed on the operation side of the lower work roll 1 0 1 and the lower back idle roll 1 0 2 . On the contrary, it is also possible to arrange the cross heads on the driving side of the upper work roll and the upper back idle roller, and the lower work roll and the lower back idler. Further, it is said that the cross heads are arranged on both the drive side and the operation side on the upper and lower sides so that the cross heads of the two sides intersect, and the mode in which the pivot is not provided is the double cross mode. Hereinafter, the case of the paired crossover method and the single crossover method will be described. However, as the basic function, the work roll single cross mode and the double cross mode are also the same. Therefore, the cross roll rolling machine of the present invention includes This is the case. Fig. 16 (a) and Fig. 16 (b) show schematic views of the cross roll rolling mill of Fig. 15 as viewed from the operation side. The cross roll rolling mill is a paired crossover mode and a single crossover mode. In the cross roll rolling mill, it is placed on the upper work roll 1 ο 1 and above from the conveyance direction of the material to be rolled 312 / invention specification (supplement) / 93-05/93107638 1247633 S and its opposite direction. A pair of intersecting heads (not shown) are disposed in the form of the upper work roll chocks 1 0 3 on the driving side of the backing roll 1 0 2 and the upper back roll chocks 1 0 5 . Further, the lower work roll chock 1 0 4 and the lower back support which are disposed on the operation side of the lower work roll 1 Ο 1 and the lower back idle roll 1 0 2 from the conveyance direction of the material S to be rolled and the reverse direction thereof A pair of crossheads 1 0 8 are arranged in the form of a roller bearing housing 106. Here, each of the crossheads 10 8 is supported so as to be freely movable in the conveyance direction of the material to be rolled with respect to the rolling mill casing 100. The drive of each of the crossheads 1 〇 8 is performed by a screw 1 1 5 screwed to a nut 1 16 fixed to the rolling mill housing 100. The opposing portion of the light b-bearing bearing 1 0 4 side of each of the intersecting heads 1 0 8 is fixed in the horizontal direction (up and down direction in Fig. 16 (b)) as shown in Fig. 16 (b). The curvature forms a curved surface T. A curved surface T corresponding thereto is formed in each of the lower cross head bushings 1 1 3 . The curved 'curved surface T' and the crosshead 1 0 8 are slid in the horizontal direction and are free to rotate. On the other hand, the lower cross head bushing sleeve 113 is abutted by a flat portion thereof to a bearing bushing sleeve 1 1 7 provided on the lower work roll chock 104. Further, in the opposing portion on the side of the lower back roller bearing housing 106 of each of the intersecting heads 1 0 8 , the same curved surface as the curved surface T which is curved with a constant curvature is formed in the horizontal direction. Each of the lower cross head bushings 1 1 4 formed with the curved surface T corresponding thereto is a bearing housing bushing which is provided on the lower back idler bearing housing 1 〇6 by a flat portion thereof At the same time, the curved surface T of the other surface and the intersecting head 108 are slid in the horizontal direction to be freely rotatable. Each of the intersecting heads 108 and the cross-head bushings 1 1 3 and 1 1 4 are formed such that the sliding faces forming the curved curved surface T are mutually slid, and the cross-angle Θ can be changed. The upper work roll 1 Ο 1 and the upper back roll 1 Ο 2 are placed in the direction of conveyance of the material S to be rolled and the direction opposite thereto, in which the assembly 8 312 / invention specification (supplement) / 93-05/93107638 1247633 is placed. The cross heads of the upper working roll chocks 1 0 3 and the upper back idler chocks 1 0 5 on the driving side also have the same configuration as the cross heads 1 0 8 respectively, and the upper working roll chocks 10 3 and the facing portion of the upper back roller bearing housing 105 are formed with a curved surface Τ, and a cross-head sleeve (not shown) having a curved surface is provided on each of the curved surfaces. On the other hand, a pair of upper work roll pivot blocks are provided on the rolling mill housing 100 in such a manner as to face the upper work roll chocks 10 3 disposed on the operation side of the upper work rolls 1 0 1 . 1 0 9. In the upper working portion of each of the upper work roll pivot blocks 1 0 9 , the opposing portions on the side of the bearing housing 10 0 are formed in a curved plane with a constant curvature in the horizontal direction, and each of the curved faces corresponding thereto is formed. The upper work roll pivot block bushing sleeve 1 1 〇 is made up of the flat portion of the upper work roll. The bearing housing sleeve (not shown) provided on the roller/housing 1 0 3 is simultaneously rotatable in the horizontal direction by the curved surface 另一 of the other surface and the upper work roll pivot block 109. Further, a pair of upper back roller pivot blocks are provided on the rolling mill casing 100 in such a manner as to face the upper back roller bearing housing 105 disposed on the operation side of the upper back roller 102. 1 1 1. In the opposing portion of the upper back roller bearing housing 1 0 5 of each of the upper back roller pivot blocks 1 1 1 , a curved surface is formed with a constant curvature in the horizontal direction, and each of the curved faces corresponding thereto is formed. The upper back roller pivot block bushing sleeve 11 2 is connected by the flat portion thereof to the upper back support light bearing seat 105, and the curved surface of the other side is connected with the upper back support light b pivot block Π1 It can be rotated in the horizontal direction. In addition, on the driving side of the lower work roll 1 Ο 1 and the lower back idle roll 1 0 2, a lower work roll pivot block, a lower work roll pivot block bushing sleeve, a lower back idler pivot block and a lower back are also provided. 9 312/Inventive Manual (Repair)/93-05/9310763 8 1247633 Roller pivot block bushing. However, in general, in the rolling of the material S to be rolled by the machine, as disclosed in Patent Document 1, the work rolls 101 are biased toward the material to be rolled with respect to the backing roll 1 0 2 . S carrying direction. Here, this is referred to as a misalignment. In Fig. 16 (a), the amount of misalignment relative to the center of the rolling mill is C1, and the amount of deflection of the backing roller is C 2 . It is generally said that the total of C1 and C 2 is a bias amount. By the offset, a horizontal component (also referred to as a partial component) is generated in the direction of the arrow e in Fig. 16 (a) of the conveyance direction of the material S to be rolled. The direction of the arrow e coincides with the direction of the work roll offset. Further, in the upper and lower backing rolls 1 0 2, a horizontal component force is generated in the direction of the arrow f opposite to the conveyance direction of the material S to be rolled. The direction of the arrow f is in the same direction as the offset of the backing roller. Then, the upper and lower work roll chocks 1 0 3 and 1 0 4 are pressed against the conveyance direction of the material S to be rolled, and the upper and lower back roll chocks 1 0 5 and 1 0 6 are pressed in opposite directions, up and down. The work roll chocks 1 0 3, 1 0 4 are topped to the rolling mill casing 1 0 0 in the conveying direction of the material S to be rolled, and the upper and lower back roller chocks 1 0 5, 1 0 6 are topped It is stabilized by the rolling mill casing 1000 which is connected to the inlet side of the material S of the material to be rolled. However, as shown in Fig. 16 (a) and Fig. 16 (b), because the rolling bearing housings 1 0 3, 1 0 4, 1 0 5, 1 0 6 and the rolling mill housing 1 0 0 Between (correctly between the bearing bushing sleeve set on the upper work roll chock 1 0 3 and the work roll pivot block bushing 1 1 0, in the lower work roll chock 1 0 4 Between the bearing bushing sleeve 1 1 7 and the cross head bushing sleeve 1 1 3 , between the upper back roller bearing housing 1 0 5 and the upper back roller pivot block bushing sleeve 1 1 2, and under Between the back roller bearing housing 1 0 6 and the lower cross head bushing sleeve 1 1 4), there is a gap 10 312 / invention manual (supplement) / 93-05/93107638 1247633 d, so if not for each roller bearing housing 1 〇3,1 Ο 4,1 Ο 5,1 Ο 6 Positioning in the conveying direction of the material S to be rolled, when the rolling load is small, that is, when the rolling force due to the bias is small, the rolling is performed. In the case of changing the cross angle β, etc., in the rolling mill casing 100, the upper and lower work roll chocks 1 〇 3, 1 0 4 or the upper and lower back roll chocks 1 0 5, 1 0 6 will be rolled. The direction in which the material S is transported or the direction opposite thereto If the offset is uneven on the left and right sides (the operation side on the opposite side to the driving side), the difference in opening degree between the upper and lower work rolls 1 〇 1 is generated in the width direction of the material S to be rolled. The problem that the material to be rolled S is meandering and bending is particularly serious when the problem of cracking is broken. In order to prevent the occurrence of such a situation, as disclosed in Patent Document 2 and Patent Document 3, a device for guiding a bearing housing (roller/bearing seat) toward a conveyance direction of a material to be rolled by a hydraulic cylinder is proposed, or as disclosed in Patent Document 4 It is disclosed that the amount of shrinkage of the rolling mill casing caused by the rolling load is predicted to minimize the interval between the rolling light bearing housing and the rolling mill housing. Here, the shrinkage of the rolling mill casing refers to the rolling load acting in the vertical direction of the rolling mill casing in the middle of the casing, as shown in Fig. 17 (b), in the vertical direction of the casing. The deformation of the material to be rolled which is generated in the conveying direction in the conveying direction, that is, the contraction between the inlet side and the outlet side of the casing. Patent Document 1: Japanese Laid-Open Patent Publication No. Hei 8 - 1 9 7 1 1 0 Patent Document 2: Japanese Patent Laid-Open Publication No. Hei 9 - 2 8 5 8 0 6 Patent Document 3: Japanese Patent Laid-Open 2 Ο Ο 1 - Japanese Patent Application Laid-Open No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. Replenishment) /93-05/93]07638 1247633 The cylinder has the roll bearing housing facing the rolling mill casing. It is necessary to install the hydraulic cylinder in a very special place, so it becomes a special >' cylinder structure. Set the cost of the problem. This problem is particularly significant in retrofitting existing rolling mills. In addition, the piping for supplying the hydraulic pressure to the hydraulic cylinder does not hinder the transportation of the material, and it is necessary to have no space for the rolling mill casing and the roll shaft. Further, it is necessary to provide a space for the piping support portion, and it is also problematic in connection with the special cylinder structure of the hydraulic cylinder described above, and the reliability of the situation such as oil leakage, and the maintenance or maintenance problems. Moreover, in order to ensure the repair time, there is also a problem of reduced equipment. Usually, around the hot rolling mill, there are a large amount of roll cooling water, such as cooling water for the Kun Kun bearing housing. It is preferable to arrange a lubricant supply port in a sliding portion between the roll chock and the casing or between the bearing housing and the cylinder in such a manner that the lubricant is not used by the cooling water. However, in order to arrange the supply port of the lubricant in the sliding portion between the bearing housing and the hydraulic cylinder, the hole for supplying the lubricant must be penetrated in the hydraulic cylinder, so that it is not present at all. Further, when the hydraulic cylinder is in contact with the roll chock, the sliding pressure is increased, and the wear amount of the bearing bush sleeve and the cylinder face is increased. Therefore, the cost of the repair is also increased. Further, as in the above-described Patent Document 4, in the method of predicting the shrinkage amount of the rolling mill casing by the rolling load, in order to minimize the gap between the roll chock and the rolling mill casing, the rolling load is small. That is, in the case where the amount of the machine is small, there is a gap between the roll chock and the rolling mill casing 3 12 / invention manual (supplement) / 93-05/93107638 narrow, and the bearing is rolled. Another easy rate of production, rolling flow steam rolls, must be applied to the resulting shell gap, 12 1247633 and there is no way to completely stabilize the roll chock. Further, when the interval between the rolling stand and the rolling mill casing is set to be too narrow, the rolling bearing seat is instead caught by the casing, and there is a problem that the roll does not rotate, and the equipment such as the bearing is broken. . Accordingly, the present invention has been made in view of the above problems, and an object thereof is to provide a cross roll rolling mill having a simple structure, a low installation cost, and a high reliability, which can be displaced in the gap of each roll chock. Rolling method for cross roll rolling mill. [Summary of the Invention] 1 . The cross roll rolling mill of the present invention is a cross roll rolling mill having a work roll chock rotatably supporting a roll and a back support base rotatably supporting the back roll, and is characterized in that: During the rolling process, the spring of the work roll bearing housing is forced in the direction in which the work rolls are offset. 2 . The cross roll rolling machine of the present invention is used in 1. In the described invention, it is characterized in that, in the process of rolling the material to be rolled, the spring of the backing bearing housing is forced in the direction in which the backing is biased. 3 . The cross roll rolling machine of the present invention is used in 1. With 2 . The document I described is characterized in that a lubricant is supplied between the spring holder and the bearing sleeve sleeve, and between the fork and the cross-head sleeve. 4) The rolling method using the cross roll rolling mill of the present invention is a cross roll rolling mill for a work roll bearing housing rotatably supporting a work roll and a backing roll bearing seat of a rotatable holding back roller The rolling side is characterized in that, when rolling the material to be rolled, the above-mentioned 312/invention specification (supplement)/93-05/93107638 reimbursing roller shaft is burned by the spring side to prevent and make the work roll The shaft material is rolled, and the above-mentioned cloth and the branching method are used. The work 13 1347633 roll chock is forced to roll in the direction of the above-mentioned work roll offset in the rolling. 5 . A rolling method using the cross roll rolling mill according to the present invention is characterized in that: in the rolling of the material to be rolled, the backing roller bearing housing is urged by the spring side Rolling is performed in the direction in which the above-mentioned backing rolls are displaced during rolling. 6 . The rolling method using the cross roll rolling mill of the present invention is based on 4.  With 5 . In the invention described, the lubricant is supplied between the spring holder and the bearing housing bushing, and between the cross head and the cross head bushing sleeve. [Embodiment] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Fig. 1 (a) and Fig. 1 (b) show a first embodiment of a cross roll rolling mill according to the present invention, and Fig. 1 (a) is a schematic view of a cross roll rolling mill viewed from the operation side, Fig. 1 ( b) is the AA arrow view in Figure 1(a). In the cross roll rolling mill shown in Fig. 1 (a), the lower roll is first described, and the operation of the lower work roll 1 and the lower back idle roll 2 is carried from the conveyance direction of the material to be rolled and the reverse direction thereof. A pair of intersecting heads 8 are disposed in the form of a lower working roll chock 4 that rotatably supports the lower work roll 1 and a lower back roll chock 6 that rotatably supports the lower back roll 2. Here, each of the crossheads 8 is supported to be freely movable in the conveyance direction of the material to be rolled with respect to the rolling mill casing 30. The drive of each of the crossheads 8 is performed by a screw 15 that is screwed to the nut 16 fixed to the rolling mill housing 30. The opposite direction 卩 on the lower work roll chock 4 side of each cross head 8 is as shown in Fig. 1 (b), in the horizontal direction (up and down direction in Fig. 1 (b)) with a certain 14 312 / invention specification (补)/93-05/93107638 1247633 The curvature forms a curved surface τ, and each lower cross-head sleeve 13 corresponding to the curved surface τ is formed by its flat portion abutting on the lower work roll chock 4 The bearing bushing bushing is provided at the same time, and the curved face of the other face is rotatably connected to the crosshead 8 in the horizontal direction. Further, in the opposing portion of the lower back roller bearing housing 6 side of each of the intersecting heads 8, the same curved surface as the above-described cymbal which is curved with a constant curvature is formed in the horizontal direction, and each of the curved surfaces corresponding thereto is formed. The lower cross head bushing sleeve 14 is a bearing seat bushing sleeve (not shown) provided on the lower back idler bearing housing 6 by a flat portion thereof, and the curved face and the cross head 8 of the other side are simultaneously It can be rotated in the horizontal direction. Each of the intersecting heads 8 and the cross-head bushings 13 and 14 are formed to be able to change the crossing angle by sliding the sliding surfaces of the curved surfaces to each other. In the state shown in Fig. 1 (a), the lower work roll chock 4 is biased in the conveyance direction of the material to be rolled (the same direction as the horizontal direction component e occurs) by the cross head bushing 13 The positioning is performed in the position of the position, and the lower back roller bearing housing 6 is in the opposite direction to the conveying direction of the material to be rolled by the cross head bushing 14 (the same direction as the horizontal component force f occurs) Positioning is performed in a biased state. In order to prevent the positional deviation of the lower work roll chock 4, the cross head bushing 1 3 on the inlet side of the conveyed direction of the material to be rolled is provided to the rolling mill casing 30 (the direction in which the material to be rolled is conveyed) The outlet side) forces the bearing housing limiting device of the working roll chock 4 to be 8 . In other words, the cross head bushing sleeve 1 on the inlet side of the conveyance direction of the material to be rolled is provided with a direction in which the middle and lower work rolls are displaced toward the rolling of the material to be rolled, and the bearing of the lower work roll chock 4 is forced. Block limiting device 18. The bearing seat limiting device 18, as shown in Fig. 1(b), is a cross headliner 15 312/invention specification (supplement)/93-05/93107638 1247633 sleeve 13 3, thin sleeve 2 The spring 21 and the spring retainer 19 are formed. The spring holder 19 is pressed against the bearing housing bushing 1 by the spring 21, whereby the lower work roll chock 4 is forced in the direction of the rolling mill housing 30. The spring 2 1 is preferably a disc spring. It can be applied as long as it is an elastomer or has the same function, and is not limited to a disc spring. The cross head bushing 13 and the spring retainer 19 are provided with through holes for supplying grease, and the lubricant supplied between the cross head and the cross head bushing is supplied to the spring retainer through the through hole. The sliding surface with the bearing bushing sleeve. On the other hand, with respect to the operation side shown in Fig. 1 (a), on the drive side (not shown), the lower work roll pivot block sleeve (not shown) on the inlet side of the material to be rolled in the conveyance direction is provided. There is a bearing housing restricting device (not shown) that urges the lower work roll chock (not shown) in the direction of the rolling mill casing 30 (the direction in which the material to be rolled is conveyed). The bearing seat limiting device has a bearing seat limiting device with the operating side. 8 identical composition. Next, the upper work roll 1 is described as being disposed on the rolling mill casing 30 in such a manner as to face the upper work roll chock 3 rotatably supporting the upper work roll 1 disposed on the operation side of the upper work roll 1. There is a pair of upper work roll boring shaft blocks 9. The opposing portions on the upper work roll chock 3 side of the pole block 9 are respectively wound, and the curved surface T is formed with a constant curvature in the horizontal direction, and the upper work roll pivots corresponding to the curved surface T are formed. The block lining sleeve 10 is a bearing seat lining sleeve (not shown) which is arranged on the upper work roll chock 3 by a flat portion thereof, and the curved surface T of the other side and the upper work roll pivot block 9 is topped in the horizontal direction and is free to rotate. Further, in opposition to the upper back idler bearing 5 of the backing roller 2, which is rotatably supported on the operating side of the upper backing roller 2, rotatably supports 16 312 / invention specification (supplement) / 93-05 / 93107638 1247633 In a manner, a pair of upper back roller pivot blocks 11 are provided on the rolling mill casing 30. The opposing portions on the side of the upper back support 1 of the upper back roller pivot block 1 are formed with a constant curvature in the horizontal direction, and the upper faces of the curved faces T corresponding thereto are formed. The roller pivot block bushing sleeve 12 is connected by the flat portion thereof to the upper back roller bearing housing 5, and the curved surface of the other surface is connected with the upper back support light pivot block 11 in the horizontal direction. Free to rotate. In the state shown in Fig. 1 (a), the upper work roll chock 3 is positioned in a state in which the upper work roll pivot block bushing sleeve 1 is offset in the conveyance direction of the material to be rolled, The backing roller bearing housing 5 is positioned in a state in which it is displaced in a direction opposite to the conveying direction of the material to be rolled by the upper back roller pivot block sleeve 1 2 . In order to prevent the positional deviation, the upper work roll pivot block bushing 10 on the inlet side of the material to be rolled in the direction of conveyance is provided to the rolling mill casing 30 (the direction of the conveyance direction of the material to be rolled) Forced to work on the bearing housing limiting device 1 of the bearing housing 3. In other words, the upper work roll pivot block sleeve 10 on the inlet side of the conveyed direction of the material to be rolled is provided with a direction in which the upper work roll 1 is being rolled toward the rolled material, and the upper work roll is forced. The bearing housing of the bearing housing 3 limits the device 18. The upper bearing housing limiting device 18 has the same configuration as the bearing housing limiting device 18 that forces the lower working chock 4 . The housing restricting device 18 is composed of an upper work roll pivot block sleeve 1 〇, a thin sleeve (not shown), a spring (not shown), and a spring retainer (not shown). The spring retainer (not shown) is pressed against the bearing housing bushing by a spring (not shown), whereby the upper work roll chock 3 is forced in the direction of the rolling mill casing 30. 17 312/Invention Manual (Repair)/93-05/93107638 1247633 On the work roll pole shaft block sleeve 1 ο, spring retainer (not shown) is provided with a through hole for grease supply The lubricant between the roll pivot block 9 and the upper work roll pivot block sleeve 10 is supplied to the surface of the spring retainer through the through hole, in other words, to the spring retainer and the bearing sleeve sleeve. Sliding surface. On the other hand, the operation side is shown in Fig. 1 (a), and is placed on the drive side (not shown) to be placed on the upper work roll 1 and the upper back idle roll 2 from the conveyance direction of the material to be rolled and the reverse direction. The upper side of the drive roll rotatably supports the upper work roll chock (not shown) and the upper back roll chock (not shown) rotatably supporting the upper back roll 2, and is arranged A pair of crossheads (not shown). Then, the opposing portions on the roll chock side are worked on each of the crossheads, and the curved surface T is formed with a constant curvature in the horizontal direction, and each of the upper cross-head sleeves corresponding to the curved surface T is formed. The flat portion is connected to the bearing seat bushing sleeve provided on the upper working rolling bearing housing, and the curved surface of the other surface is rotatably connected to the cross head (not shown) in the horizontal direction. Further, the opposing portions on the bearing housing side are back-backed on the respective cross heads, and the curved surface T curved with a constant curvature is formed in the horizontal direction, and the upper cross-head sleeves corresponding to the curved surface T are formed. The bearing seat liner sleeve (not shown) provided on the upper back roller bearing housing by the flat portion thereof, and the curved surface T of the other surface and the upper back roller crosshead (not shown) The horizontal direction support is free to rotate. In order to prevent the positional deviation of the upper work roll chock, the upper work roll cross head bushing on the inlet side of the material to be rolled is provided with a rolling mill casing 30 (the direction in which the material to be rolled is conveyed) On the exit side) forced work on the rolling 18 312 / invention manual (supplement) / 93-05 / 93107638 1247633 bearing housing limiting device (not shown). In other words, the upper work roll cross head bushing on the inlet side of the material to be rolled in the direction of conveyance is provided with a bearing for rolling the material to be rolled, and the upper work roll 1 is biased, and the bearing of the upper work roll chock is forced. Block restriction device. This chock restricting device has the same configuration as the chock restricting device 1 8 on the operating side. According to the first embodiment of the cross roll rolling mill described above, the upper and lower work roll chocks 3 and 4 on the operation side and the drive side are biased in the roll direction by the simple mechanism of the spring 2 1 (the upper and lower work rolls are to be wound up) The bearing blocks 3, 4 are forced in the conveying direction of the material to be rolled, so as to prevent the upper and lower work roll chocks 3, 4 from being in the gap between the upper work roll pivot block sleeve 10 and the cross head bushing 13 The positional deviation prevents malfunctions such as meandering, bending, and breaking of the material to be rolled. Next, a second embodiment of the cross roll rolling mill of the present invention will be described with reference to Figs. 2(a) and 2(b). Fig. 2 (a) shows a second embodiment of the cross roll rolling mill of the present invention, Fig. 2 (a) is a schematic view of the cross roll rolling mill viewed from the operation side, and Fig. 2 (b) is Fig. 2 ( A) B-B arrow view. The cross roll rolling mill shown in Fig. 2 (a) is a direction in which the upper and lower backing rolls 2 are further disposed in the rolling process of the rolled material, and the bearings of the upper and lower back roller bearing blocks 5, 6 are forced. The aspect of the seat limiting device 2 2 is different from the cross roll rolling mill shown in Fig. 1(a). The details will be described below. In the cross roll rolling mill shown in Fig. 2 (a), the lower roll is first described; the operation of arranging the lower work roll 1 and the lower back idle roll 2 from the conveyance direction of the material to be rolled and the reverse direction thereof The lower slewing support of the lower work roll of the lower work roll 1 and the rotatably support the lower back support 2 19 312 / invention manual (supplement) / 93-05/93107638 1247633 In the form of a roller bearing block 6, a pair of crossheads 8 are arranged. Here, each of the crossheads 8 is supported so as to be freely movable in the conveyance direction of the material to be rolled with respect to the rolling mill casing 30. The drive of each of the crossheads 8 is carried out by means of a screw 15 screwed to a nut 16 fixed to the rolling mill housing 30. The opposing portions on the lower work roll chock 4 side of each of the intersecting heads 8 form a curved surface T with a constant curvature in the horizontal direction, and each of the lower cross-head sleeves 1 3 corresponding to the curved surface T is formed. The flat portion is connected to the bearing bushing sleeve 17 provided on the lower work roll chock 4, and the curved surface T of the other surface and the cross head 8 are lapped in the horizontal direction to be freely rotatable. Further, the opposing portions on the side of the bearing housing 6 on the lower back of each of the intersecting heads 8 also form a curved surface T having a constant curvature in the horizontal direction, and each of the lower cross-head sleeves 1 having the curved surface T corresponding thereto is formed. 3, the plane portion is connected to the lower back roller bearing housing 6, and the curved surface T of the other surface is rotatably connected to the cross head 8 in the horizontal direction. Each of the intersecting heads 8 and the intersecting lining sleeves 1 3 and 14 are formed so as to be able to change the crossing angle by sliding each other with the curved sliding surfaces. In the state shown in Fig. 2 (a), the lower work roll chock 4 is offset by the cross head assembly and the conveyance direction of the material to be carried out (the same direction as the horizontal component force e is generated). In the state of being positioned, the lower back roller bearing housing 6 is biased in the opposite direction to the conveying direction of the material to be rolled (the same direction as the horizontal component force f is generated) by the cross head bushing 14 Positioning is performed in the bit state. In order to prevent the positional deviation of the lower work roll chock 4, the cross head bushing sleeve 1 3 on the inlet side of the conveyed direction of the material to be rolled is provided to the rolling mill casing 30 (the direction in which the material to be rolled is conveyed) Exit side) Forced 20 312 / Invention manual (supplement) / 93-05 / 93107638 1247633 Forced bearing housing limiting device 1 8 of the work roll chock 4 . In other words, the cross head bushing sleeve 13 on the inlet side of the conveyance direction of the material to be rolled is provided with a bearing seat for pressing the work roll holder 4 in a direction in which the material to be rolled is rolled and the middle and lower work rolls 1 are displaced. Limiting device 18. The bearing housing limiting device 18 has the same configuration as that shown in FIG. 1( b ), and is composed of a cross-head bushing sleeve 13 , a thin sleeve 2 0 , a spring 2 1 , and a spring retainer 19 . . The spring holder 19 is pressed against the bearing housing bushing 17 by the spring 21, whereby the lower working roll chock 4 is forced in the direction of the rolling mill casing 30. The cross head bushing 13 and the spring retainer 19 are provided with through holes for supplying grease, and the lubricant supplied between the cross head and the cross head bushing is supplied to the spring retainer through the through hole. The surface, in other words, the sliding surface of the spring retainer and the bearing bushing sleeve 17. Further, in order to prevent the positional deviation of the lower back roller bearing housing 6, the cross head bushing sleeve 14 on the outlet side of the material to be rolled in the conveying direction is provided with a rolling mill casing 30 (rolled material). The conveying direction of the inlet side) forces the bearing seat restriction device 2 of the lower roller bearing housing 6 . In other words, the cross head bushing sleeve 14 on the outlet side of the conveyance direction of the material to be rolled is provided to press the material to be rolled, and the lower back roller 2 is biased in the direction in which the lower back roller 2 is biased. Housing restraint 2 2 . As shown in Fig. 2(b), the bearing housing limiting device 2 2 is composed of a cross-head bushing sleeve 14, a thin bushing sleeve 24, a spring 25, and a spring retainer 23. The spring retainer 2 3 is pressed against the bearing housing bushing 2 by the spring 25, whereby the lower back roller bearing housing 6 is forced in the direction of the rolling mill housing 30. In the cross head bushing sleeve 14 and the spring retainer 23, there is a through hole 21 312 / invention manual (supplement) / 93-05 / 93〗 07638 1247633 for grease supply, for the cross head and the cross head bushing The lubricant between the cylinders is supplied to the surface of the spring holder 23 through the through hole, in other words, the sliding surface of the spring holder and the bearing sleeve sleeve 26 is supplied. On the other hand, the operation side is shown on Fig. 2 (a), and the lower work roll pivot block sleeve (not shown) on the discharge side of the material to be rolled in the conveyance direction (not shown) is provided on the drive side (not shown). A bearing housing restricting device (not shown) for pressing the lower work roll chock (not shown) to the rolling mill casing 30 (the conveying direction of the material to be rolled). This chock restricting device has the same configuration as the chock restricting device 18 on the operating side. In addition, the lower back roller pivot block sleeve (not shown) on the outlet side of the material to be rolled in the conveyance direction is provided to the rolling mill casing 30 (the inlet side of the material to be rolled) A housing restricting device (not shown) for pressing the lower back roller and bearing housing (not shown). The bearing housing limiting device has the same configuration as the bearing housing limiting device 2 2 on the operating side. Next, the upper work roll 1 will be described; a pair of upper work roll pivot blocks 9 are provided on the rolling mill housing 30 in such a manner as to face the upper work roll chocks 3 rotatably supporting the upper work rolls 1. . The opposing portions on the upper work roll chock 3 side of each of the upper work roll pivot blocks 9 form a curved surface T with a constant curvature in the horizontal direction, and each upper work roll pivot block corresponding to the curved surface T is formed. The lining sleeve is a bearing seat bushing sleeve (not shown) which is arranged on the upper working roll bearing block 3 by a flat portion thereof, and the curved surface T of the other surface and the upper working scepter pivot block 9 It can be rotated in the horizontal direction. In addition, on the rolling mill housing 30 in a manner opposite to the upper back idler bearing housing 22 312/invention specification (supplement)/93-05/93107638 1247633 5 that rotatably supports the upper backing roller 2 A pair of upper back roller pivot blocks 1 1 are provided. At the opposite surface of the upper back support of the upper back roller pivot block 1 1 , a curved surface is formed with a certain curvature in the horizontal direction, and the upper back roller pivots of the curved surface are formed. The block sleeve 1 2 is connected to the upper back roller bearing housing 5 by its flat portion, and the curved surface 另一 of the other surface and the upper back supporting pivot block 11 are supported to be freely rotatable in the horizontal direction. In the state shown in Fig. 2 (a), the upper work roll chock 3 is positioned by the upper work rolling of the pivot block bushing sleeve 10 in a state in which the conveyance direction of the material to be rolled is displaced. The backrest bearing housing 5 is positioned in a state in which it is displaced in a direction opposite to the conveying direction of the material to be rolled by the upper backing bar pivot block sleeve 1 2 . In order to prevent the positional deviation of the upper work roll chock 3, the upper work roll pivot block lining sleeve 10 is provided on the inlet side of the material to be rolled in the direction of conveyance, and is provided to the rolling mill casing 30 (rolled The conveying direction of the material is on the outlet side) forcing the bearing housing limiting device 1 of the upper work roll chock 3 . In other words, the upper work roll pivot block sleeve 10 on the inlet side of the conveyed direction of the material to be rolled is provided with the direction of the upper middle work roll 1 being biased to the workpiece to be rolled, and the upper work roll chock 3 is forced. The housing limiter 1 8 . The chock restricting device 18 has the same configuration as the chock restricting device 18 for pressing the lower work chock 4 . The housing limitation device 18 is composed of an upper work roll pivot block sleeve 1 〇, a thin sleeve (not shown), a spring, and a spring retainer. The spring retainer (not shown) is pressed against the bearing housing bushing by a spring (not shown), whereby the rolling bearing housing 3 is forced to work in the direction of the rolling mill housing 30. Upper work roll pivot block bushing 1 〇, spring retainer (not shown) 23 312 / invention manual (supplement) / 93-05/93107638 1247633 with through hole for grease supply, supply work roll Lubricant between the pivot block 9 and the upper work roll pivot block sleeve 10 is supplied to the surface of the spring retainer through the through hole, in other words, the sliding surface of the spring retainer and the bearing sleeve sleeve. Further, in order to prevent the positional deviation of the upper back roller bearing housing 5, the upper back roller pivot block bushing sleeve 1 2 on the outlet side of the material to be rolled in the conveying direction is provided with a rolling mill housing 30. (The inlet side of the conveyance direction of the material to be rolled) Forces the bearing housing restriction device 2 2 of the upper back support light bearing housing 5. In other words, the upper back roller pivot block sleeve 1 2 on the outlet side of the conveyance direction of the material to be rolled is provided with a direction in which the upper and lower back rollers 2 are displaced toward the material to be rolled, and the upper back rest is forced. The bearing housing limiting device 2 of the bearing housing 5 is. The bearing housing limiting device 2 2 has the same configuration as that of Fig. 2 (b). On the other hand, the operation side is shown with respect to Fig. 2 (a), and on the drive side (not shown), the upper work roll rotatably supporting the upper work roll 1 is held from the conveyance direction of the material to be rolled and the reverse direction thereof. A pair of crossheads (not shown) are disposed in the form of a bearing housing (not shown) and an upper back roller bearing housing (not shown) that rotatably supports the upper back roller 2. Then, the opposing portions on the roll chock side are worked on each of the crossheads, and the curved surface T is formed with a constant curvature in the horizontal direction, and each of the upper cross-head sleeves corresponding to the curved surface T is formed. The flat portion is connected to the bearing sleeve sleeve provided on the upper work roll chock, and the curved surface of the other surface and the cross head (not shown) are supported to be freely rotatable in the horizontal direction. Further, on the respective intersecting heads, the opposing portions on the backing roller and the bearing housing side are also formed with a curved surface T that is curved with a constant curvature in the horizontal direction, and an intersecting head bushing sleeve is formed to which the curved surface T corresponding thereto is formed. Department 24 312 / Invention Manual (Repair) / 93-05/93107638 1247633 The flat portion is attached to the upper back roller bearing housing, while the curved surface of the other surface and the cross head bushing sleeve (not shown) are horizontal. The direction support is free to rotate. In order to prevent the positional deviation of the upper work roll chock, the cross head bushing sleeve on the inlet side of the material to be rolled in the conveyance direction is provided to the rolling mill casing 30 (the direction of the conveyance direction of the material to be rolled) A bearing housing limiting device (not shown) that forces the upper work roll chock. In other words, the cross head bushing sleeve on the inlet side of the direction in which the material to be rolled is conveyed is provided with a bearing seat restricting means for pressing the material to be rolled to bias the upper work roll 1 in a direction biasing the upper work roll chock. This chock restricting device has the same configuration as the bearing block restricting device 18 on the operating side. Further, in order to prevent the positional deviation of the upper back roller bearing housing, the cross head bushing sleeve on the outlet side of the material to be rolled in the conveying direction is provided to the rolling mill casing 30 (the conveying direction of the material to be rolled) On the inlet side) a bearing housing limiting device (not shown) for forcing the upper idler bearing housing. The shaft retaining means has the same configuration as the bearing retainer 2 2 on the operating side. According to the second embodiment of the cross roll rolling mill described above, in addition to the upper and lower work roll chocks 3, 4 by the simple mechanism of the springs 2 1 and 25, the upper and lower backs are further reported to the bearing blocks 5, 6 Pressing the biasing direction (for example, moving the working bearing housings 3, 4 to the direction of conveyance of the material to be rolled, and pushing the backrest bearing housings 5, 6 in opposite directions), thereby preventing the rolling bearing housings The positional deviation in the gaps of 3, 4, 5, and 6 prevents malfunctions such as meandering, bending, and breaking of the material to be rolled. In addition, by directly supplying the lubricant to the sliding portion of the spring retainer and the bearing sleeve sleeve, the lubricant 25 312 / invention manual (supplement) / 93-05/93107638 1247633 will not be cooled by the cooling water, the bearing housing The cooling water such as cooling water flows to maintain a good lubrication state, and the cost of repair and maintenance of the spring retainer and the bushing sleeve can be reduced. Hereinafter, the reason why the upper and lower work roll chocks 3, 4 are not only forced by the springs 25, but also the upper and lower backs of the bearing blocks 5, 6 are urged to the rolling mill casing 30 is explained in detail. Up and down work, report the bearing housing 3, 4 or the upper and lower back bearing bearing housings 5, 6, as shown in Figure 4, with the upper working roller * frame shaft block sleeve 10, cross lining sleeve 13 The upper back roller pivot block bushing sleeve 2, the gap d between the cross head bushing sleeves 1 4, the positional deviation occurs in the conveying direction of the material to be rolled or the opposite direction thereof, resulting in the upper working roll 1 With respect to the destruction of the parallelism between the upper back roller 2 or the lower work roll 1 and the lower back roller 2, the upper work roll 1 and the upper back roll 2 or the lower work roll 1 and the lower back roll 2 slightly intersect. . The angle of intersection of the upper work roll 1 and the upper back idle roll 2 is referred to as the roll cross angle. Alternatively, the intersection angle of the lower work roll 1 and the lower back idle roll 2 is referred to as a roll cross angle. When such a roll cross angle occurs, a force (thrust) in the direction of the axial direction is generated between the upper and lower work rolls 1 and the upper and lower back rolls 2. Figure 3 shows the relationship between the roll cross angle and the thrust coefficient (divided by the thrust divided by the rolling load). In the pair of cross rolling mills, the work rolls 1 and the backing rolls 2 normally have their respective central axes in a parallel positional relationship. However, as can be seen from Fig. 3, the minute rolls accompanying the destruction of the parallelism are known. The thrust coefficient changes greatly with the change of the cross angle. Therefore, if the rolling cross angle is slightly increased, there will be a case where a large thrust force is generated. As shown in Figure 4, the rolling mill is used in each rolling light bearing housing 3, 4, 5, 6 and 26 312 / invention manual (supplement) / 93-05/9310763 8 1247633 pivot block bushing or cross head There is a gap d between the lining sleeves 1 Ο, 1 3, 1 2, and 14 4, and the roll cross angle is variable. The variation of the roll cross angle depending on the gap d is usually uncontrollable. For example, in the example of the rolling mill shown in the above-mentioned FIG. 1 (a), FIG. 1 (b) and the conventional example of FIG. 14 (a) and FIG. 14 (b), the maximum occurrence during rolling is 0 .  0 4 degree roll • Cross angle. Fig. 5 shows the relationship between the roll crossing angle, the difference load, and the thrust in the case where the lower work roll 1 and the lower back idle roll 2 intersect. Here, the "difference load" means a difference obtained by subtracting the load on the driving side from the load on the operation side. As shown in Figure 5, even at 0.  A light cross angle of 0 4 degrees also produces a thrust of 1 2 0 0 k N. The thrust is as shown in Fig. 6, which is used to balance the difference in load between the operating side and the driving side for balancing the moments of the rolls 1, 2 in the front view of the rolling mill. As shown in Fig. 5, when the thrust is 1 2 0 0 k N, the differential load changes to 6 0 0 k N. When the differential load changes to 60 k k N, if the spring coefficient of the rolling mill casing is 1 500 k n / mm, the vertical direction on the operating side and the driving side (rolling load) The difference in the direction of action produces approximately 4 Ο μ m (two 600/15000 x 1000). Then, it is assumed that, as shown in Fig. 6, as in the case where the material to be rolled S is being rolled, even if the material to be rolled S passes through the center of the width direction of the upper and lower work rolls 1, the drive must be driven because of the compensation of the differential load. The opening degree contraction of the upper and lower work rolls 1 on the side is equivalent to the amount of about 40 // m. Usually, when rolling a material to be rolled, the operator uses a change in the differential load at the start of rolling of the next rolled material after rolling a rolled material, and adjusts it to zero. The method of the grade (the difference in the opening degree between the operation side and the drive side of the upper and lower work rolls). However, in the case of cross-roll rolling 27 312 / invention manual (supplement) / 93-〇 5/93107638 1247633 machine-like work roll chocks 3, 4 or back-trailer bearing blocks 5, 6 are carried in the material being rolled The positional deviation of the direction occurs for the above reason, and the differential load is generated by the thrust of the rolling contact angle generated thereby, and the level value is also changed only in the amount of the differential load according to the thrust. . Further, in the aforementioned gap d, the positions of the work roll chocks 3, 4 or the back roller bearing blocks 5, 6 are not fixed but are variable. In this way, if the position of the working bearing 3, 4 or the back bearing bearing housings 5, 6 is changed within the gap d, even if the same size of the rolled material of the same size is rolled under the same conditions In the case, the thrust, the differential load, and the grade value to be obtained lose their reproducibility. Therefore, even if the rolling is continued in this state, bending or meandering occurs in the material to be rolled, especially in the case of intermittent rolling such as hot rolling, or worse, the end of the material to be rolled. The reason for pulling in. Therefore, a better method is to use the spring 2 5 not only to press the upper and lower work roll chocks 3, 4, but also to push the upper and lower back roll chocks 5, 6 in the direction of the rolling mill casing 30 to prevent each roll and bearing. The positions of the seats 3, 4, 5, 6 are offset within the gap d. It can suppress the generation of the intersection angle (roller crossing angle) between the upper and lower work rolls 1 and the upper and lower back rolls 2, and suppress the generation of the thrust accompanying this, and can more effectively prevent the meandering, bending, and cracking of the material to be rolled. Disconnected and other faults. Next, the state in which the work rolls 1 and the backing rolls 2 are incorporated into or pulled out of the rolling mill will be described with reference to Figs. 1(a) and 2(a). The work roll 1 and the back roll 2 are incorporated or removed in a direction perpendicular to the paper surface of Fig. 1 (a) and Fig. 2 (a). In order to prevent mechanical interference when the work roll 1 and the backing roll 2 are assembled or unplugged, the cross head 8 is screwed through the screw 1 which is screwed into each other 28 312 / invention manual (supplement) / 93-05/93107638 1247633 5 and the screw 15 side of the nut 16 rotates to open from the roll chocks 4, 6 by 2 to 5 m ι. Then, after the work roll 1 and the backing roll 2 are assembled, the cross head 8 is closed, and the gap between the spring retainer 19 and the bearing bushing sleeve 17 and the spring retainer 23 and the bearing bushing sleeve 26 is It is set to zero. The gap between the spring retainer 19 and the thin sleeve 2 0, the spring retainer 2 3 and the thin sleeve 2 4, when the rolling load is applied, taking into account the rolling mill casing 30 as shown in Fig. 17 ( b) The contraction to the narrowing direction of the above gap is set to 1.  0 m m~ 2 .  0 m m. When the rolling load is applied, the shrinkage of the rolling mill casing 30 is matched, and the gap becomes small, and the springs 2 1 and 25 are compressed between the roller chocks 4 and 6. As the force acting on the springs 21, 25 in this compressed state, it is preferable that one bearing housing is 2 0 0 to 3 0 0 k N . If it is lower than 200 k N, the force for pressing the roll chocks 4 and 6 in the direction of the rolling mill casing 30 is insufficient, and if it exceeds 300 k N, excessive force is applied to The rotation of the bearing (not shown) in the bearing housings 4 and 6 is damaged. In order to fully utilize the function of the bearing housing limiting device 18 of the present invention, lubrication is important. The lubricating portion is between the spring retainer 19 and the bearing bushing sleeve 17 and between the crosshead 8 and the crossover bushing sleeve 13. In particular, it is important that the cross head 8 and the cross head bushing 13 are supplied with a lubricant on a surface where the curved surface sliding surfaces slide with each other. Further, in any of the first embodiment and the second embodiment, it is shown that only one of the operation side and the drive side is moved to the inlet side and the outlet side of the material to be rolled in the conveyance direction. Single cross rolling mill, but the pivot block 9, 1 1 etc. which becomes the center of rotation when the cross angle is changed 29 31W invention specification (supplement) /93-05/93107638 1247633 is fixed to the rolling mill casing 30 When the working rolls 1 and the backing rolls 2 are incorporated in the rolling mill such as the cross head 8, the gap cannot be opened. Thereby, the gaps between the spring retainer on the side of the pivot block 9, 1 1 and the bearing bushing sleeve on the side of the roll chocks 3, 5 can be prevented from being carried out in the rolling mill for the work roll 1 and the backing roll 2 When the rolling and the bearing blocks 3 and 5 are involved in the joining and pulling out, it is only necessary to generate a slight gap in the state in which the rolling load is not applied. The gap is preferably 0 · 2~1.  0 in m. If it is less than 0 · 2 m m, there is interference when the work roll 1 and the backing roll 2 are incorporated into and pulled out of the rolling mill, and if it exceeds 1.  0 mm, in the case of the rolling load, even if the rolling mill casing 30 shrinks, the spring retainer still cannot reach the bearing bushing sleeve of each of the roll chocks 3, 5, and there is a possibility that the pressing force cannot be applied. In either of the first embodiment and the second embodiment, the gap is set to zero.  4 mm. (Example) FIG. 1(a) and FIG. 1 of the present invention are applied to the first to seventh stages (F1 to F7) of the finishing rolling mill 46 of the hot rolling line 40 shown in FIG. (b) The case of the paired cross rolling mill (only the bearing seat limiting device for the forced work roll chock) is rolled, as shown in Fig. 16 (a) and Fig. 16 (b) In the case where the cross rolling mill was rolled, the positional shift amount of the work roll chock was compared. In the hot rolling line 40 shown in Fig. 7, the component symbol 41 is a heating furnace, 42 is a sizing press, 43 is a rough rolling mill, and 44 is a end shear. 45 is a descaling device, 47 is a cooling zone, and 48 is a winding device. Figure 8 shows the positional offset of the rolling load of the fourth stage F 4 and the lower working roll chock on the side of the operation of the cross head side 30 312 / invention specification (supplement) / 93-05 / 93107638 1247633 (transport direction) The relationship on the entrance side). Further, the working roll of the fourth stage of the present embodiment has a diameter of about 630 mm, the diameter of the backing roll is about 155 mm, and the crossing angle is Ο.  Ο 2~1 .  Ο 4 degrees, the rolling speed is 350~550mpm. Referring to Fig. 8, before the bearing seat limiting device is provided, that is, the conventional cross rolling mill is applied, in the rolling mill casing, the lower working roller bearing housing 1 〇4 is in the rolling mill casing 100 The maximum side of the inlet side of the material to be rolled is 1 .  Positional offset of 2 m m. On the other hand, after the bearing seat restricting device is provided, that is, the paired cross rolling mill shown in Fig. 1 (a) and Fig. 1 (b) of the present invention is applied, the lower working roll is not related to the rolling load. The position of the bearing housing 4 is offset at zero.  Below 1 m m. It can be seen that the positional deviation of the lower work roll chock 4 can be prevented. Further, the position of the lower work roll chocks 4, 104 is as shown in Fig. 10, and the eddy current distance sensor 50 is embedded in the thin sleeve 20, and the thirst distance sensing is measured. The distance between the device 50 and the lower working bearing housing 4, 104 is obtained. The output signal of the eddy current distance sensor 50 is taken into the amplifier 5 1. By the output of the amplifier 51, the activity of the lower working bearing 4, 104 can be constantly monitored. Further, the first to seventh stages (F1 to F7) of the finishing rolling mill 46 of the hot rolling line 40 shown in Fig. 7 are applied to Figs. 1(a) and 1(b) of the present invention. ) The paired cross rolling mill shown (only the bearing seat limiting device for the forced work roll chock is set) and the paired cross rolling mill shown in Fig. 2(a) and Fig. 2(b) (setting the forced work rolling) The bearing housing limiting device for the light bearing housing and the bearing housing limiting device for the forced backing roller bearing housing) are rolled 31 31/inventive manual (supplement)/93-05/93107638 1247633, with the application of the conventional diagram 1 6 ( a ), the case of rolling the pair of machines shown in Fig. 16 (b), compare and review the error of the differential load. Fig. 9 shows the relationship between the rolling I difference load in the actual hot rolling operation of the fourth stage F4. In the case where the chock restricting device is not provided, it is found that there is a differential load of approximately 6,000 kN by the paired cross-rolling I shown in Fig. 16 (a) and Fig. 16 (b). On the other hand, in the case of the bearing housing limiting device of the work roll chock, that is, the error of the load of the pair of cross rolling mills shown in Fig. 1 (a) and Fig. 1 (b) is reduced to 400. k N. In addition, at the same time, the case of the bearing housing limiting device of the bearing housing and the pressing of the backrest bearing housing limiting device, that is, the case of applying the paired cross rolling mill of Fig. 2 (a) and the drawing of the present invention, The error of the differential load is reduced below. As described above, the application of the present invention to a hot rolling line is described. For example, the present invention is also applicable to the cold rolling line 60 rolling mill 6 6 shown in Fig. 11. In Fig. 11, the symbol 6 1 is the inlet side back 65, the 6 7 is the tensioning roller, the 63 is the welding machine, the 6 4 is the supply tray breaking machine, and the 6 9 is the winding disk. In addition, the present invention is also applicable to the intersection of the double crossover, the cross rolling mill, the work roll, and the industrial use. As described above, the cross roll rolling mill and the fork roll according to the present invention. The rolling method of the rolling mill is forced by the simple mechanism roller bearing seat of the spring to prevent the positional deviation of the working rolling in the gap, thereby preventing the snake 312/invention specification of the rolled material ( Replenishment) /93-05/93107638 Cross-rolling i-load and the same, that is, the situation of the machine should be forced to apply this condition, the differential straight-rolled bearing housing 2 (b) shows the example of 1 50kN, but The finishing road, 6 2, 68 is the cut single cross. Rolling mill. Use this intersection to report the failure of the bearing housing, the chord, 32 1247633 rupture, etc. In addition, in addition to the work roll chock, the back support is forced by the simple mechanism of the spring to the biasing direction of the roll to prevent the position of the seat in the gap from shifting, and the cross angle of the work rolling is suppressed as much as possible (rolling cross The generation of the horns, and the generation of the mate, is suppressed as much as possible, and the failure of the meandering of the material to be rolled is prevented more effectively. In addition, as a forced work to report the bearing housing or the further pressing mechanism, it is possible to avoid the need to provide hydraulic cylinders and oil pressure in a narrow space of the roll chock without using interference, so that it can be inexpensive and highly reliable. Device. Moreover, the lubricant for supplying the lubricant to the spring retainer and the bearing bushing sleeve has no cooling water condition due to the cooling water of the roll, the cooling water of the bearing seat, etc., and can maintain a good lubrication state, and can reduce the repair of the spring retaining cylinder. Maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1(a) shows the first cross-roller of the present invention. Fig. 1 (a) shows the cross roll rolling mill viewed from the operating side as Fig. 1 (b) a) AA arrow view. Figure 2 (a) shows the second embodiment of the cross-roller rolling mill of the present invention. Figure 2 (a) shows the cross-rolling mill from the operating side. Figure 2 (b) is the BB in Figure 2(a). Arrow view. Fig. 3 is a graph showing changes in thrust coefficient with respect to the intersecting cross angle of the work roll and the backing. 312/Invention Manual (supplement)/93-05/93107638 The Xingkun bearing seat relies on the thrust of the roll rolls and the backing rolls, and the bending of the rolling machine casing of the backing roll. The embodiment of the holder and the bushing which are lubricated and flowed by the direct moving part are as shown in the figure, and the figure is shown in the figure. (Roll roll 33 1247633 Figure 4 shows the work roll chock or back roll chock A top view showing a situation in which a positional shift occurs. Fig. 5 is a graph showing the relationship between the differential load and the thrust generated in the case where the work roll chock or the back idler chock has a positional shift. Fig. 7 is a schematic view showing the structure of the hot rolling line in the case of the thrust. Fig. 8 is a schematic view showing the rolling load of the fourth stage (stand) F4. A graph showing the relationship between the positional shift amount of the lower work roll chock on the operation side of the head side. Fig. 9 is a graph showing the relationship between the rolling load and the difference load in the actual hot rolling operation of the fourth stage F4. Figure 10 is the measurement of the working roll chock BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic configuration diagram of a cold rolling line. Fig. 1 2 (a) and Fig. 1 2 (b) are schematic diagrams of a cross roll rolling mill. Fig. 1 3 shows The distribution of the opening of the upper and lower work rolls with respect to the direction of the rolled material. Figure 14 (a) is an explanatory view of a conventional rolling mill. Figure 1 4 (b) is the principle of the cross roll rolling mill Fig. 15 is a schematic configuration diagram of a main structure of a cross roll rolling mill. Fig. 16 (a) shows a cross-rolling rolling mill of a conventional example, and Fig. 16 (a) is viewed from the operation side. A schematic view of the cross roll rolling mill, Fig. 16 (b) is the AA arrow view in Fig. 16(a). 34 312/invention description §: (supplement) /93-05/93107638 1247633 Fig. 1 7 ( a), Fig. 17 (b) is a diagram showing the deformation state of the rolling mill casing. (Component symbol description) a Opening degree b Opening degree c Cross center (intersection point) C 1~C 2 Deviation amount d Clearance F1~F7 1st to 7th S rolled material T curved surface 交叉 crossing angle 1 upper and lower working rolls 2 upper and lower backing rolls 3 upper working rolling bearing 4 lower working roll chock 5 Back support I Kunming bearing seat 6 Lower back roller bearing housing 8 Cross head 9 Upper work roll pivot block 10 Upper work rolling pivot block bushing sleeve 11 Upper back roller pivot block 12 Upper back roller pivot block Liner sleeve 13 lower cross head sleeve 14 lower cross head sleeve 35

W invention manual (supplement) /93-05/9310763 8 1247633 15 screw 16 nut 17 bearing bushing sleeve 18 bearing block limiting device 19 spring retainer 20 thin bushing sleeve 2 1 spring 22 bearing seat limiting device 23 spring Retainer 24 Thin lining sleeve 25 Spring 26 Bearing lining sleeve 30 Rolling mill casing 40 埶 Rolling line 4 1 Heating furnace 42 Precision processing press 43 Rough rolling mill 44 End shear 45 Descaling device 46 Finishing mill 4 7 Cooling zone 4 8 Winding device 50 Full-flow distance sensor 5 1 Amplifier 312 / invention manual (supplement) / 93-05/93107638

36 1247633 60 Cold rolling line 6 1 Inlet side circuit 62 > 65, 6 7 Tensioning roll 6 3 Welding machine 64 Feeding plate 66 Finishing rolling mill 68 Cutting machine 69 Crimping plate 1 00 Rolling machine Shell 10 1 Upper and lower work rolls 1 02 Upper and lower back rolls 103 Upper work roll chocks 1 04 Lower work roll chocks 1 05 Upper back roll chocks 10 6 Lower back roll chocks 1 07 \ 1 08 Cross. Fork heads 1 09 Upper work roll pivot block 110 Upper work roll frame shaft block bushing 111 Upper back roll pivot block 112 Upper back roll pivot block bushing 113 Lower cross head sleeve 114 Lower cross head bushing Cylinder 115 screw 116 nut 312 / invention manual (supplement) / 93-05 / 93107638 37 1247633 117 bearing bushing sleeve

312/Invention Manual (supplement)/93-05/93107638 38

Claims (1)

1247633 Picking up, patent application scope: 1. A cross roll rolling machine, which is a cross-roll rolling with a work rolling light bearing seat that rotatably supports a work roll, and a backing roll bearing seat that rotatably supports the back support The machine is characterized in that: a spring is provided which, in the process of rolling the material to be rolled, forces the work roll chock in the direction in which the work roll is displaced. 2. The cross roll rolling mill according to claim 1, wherein a spring is further provided, and in the process of rolling the material to be rolled, the back is forced in the direction of the backing roller and the offset Check the bearing housing. 3. The cross roll rolling mill of claim 1 or 2, wherein a lubricant is supplied between the spring retainer and the bearing bushing sleeve, and between the crosshead and the crossover bushing sleeve. 4. A rolling method using a cross roll rolling mill for cross roll rolling using a work rolling bearing housing rotatably supporting a work roll and a backing roll bearing housing rotatably supporting the backing roll The rolling method of the machine is characterized in that: during the rolling of the material to be rolled, the work roll chock is urged by the spring to the direction in which the work roll is displaced during the rolling process, and rolling is performed. 5. A method of rolling using a cross-rolling-rolling mill according to item 4 of the patent application, wherein, in the rolling of the material to be rolled, the backing roller bearing shell is urged by a magazine edge Rolling is performed while the above-mentioned backing roller is displaced in the rolling process. 6 · For the use of cross-roller rolling mills according to Clause 4 or 5 of the patent application 39 312 / invention specification (supplement) / 93-05 / 93107638 1247633 rolling method, wherein the spring retainer and the bearing bushing Lubricant is supplied between the barrels and between the crossheads and the cross-head sleeves. 40 3丨2/Invention Manual (supplement)/93-05/93107638