CN1761539A - Method and apparatus for rolling metallic plate material - Google Patents
Method and apparatus for rolling metallic plate material Download PDFInfo
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- CN1761539A CN1761539A CN 200480007505 CN200480007505A CN1761539A CN 1761539 A CN1761539 A CN 1761539A CN 200480007505 CN200480007505 CN 200480007505 CN 200480007505 A CN200480007505 A CN 200480007505A CN 1761539 A CN1761539 A CN 1761539A
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- 238000005096 rolling process Methods 0.000 title claims abstract description 371
- 239000000463 material Substances 0.000 title claims description 20
- 238000000034 method Methods 0.000 title abstract description 22
- 238000004364 calculation method Methods 0.000 claims description 74
- 239000002184 metal Substances 0.000 claims description 66
- 238000005452 bending Methods 0.000 claims description 37
- 238000003801 milling Methods 0.000 claims description 26
- 239000007769 metal material Substances 0.000 abstract 3
- 238000003825 pressing Methods 0.000 description 15
- 238000005516 engineering process Methods 0.000 description 9
- 230000002153 concerted effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 238000003556 assay Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000004043 responsiveness Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Abstract
The invention provides a rolling method for a flat-rolled metal material and a rolling apparatus for the method each capable of stably producing a flat-rolled metal material free from camber or having an extremely light camber. The method is a rolling method of a flat-rolled metal material executed by using a rolling mill including at least work rolls and backup rolls. The apparatus is a rolling mill for this method. A rolling direction force acting on roll chocks on the operator side and the driving side of the work roll is measured, the difference of the rolling direction force between the operator side and the driving side is calculated and a left-right swivelling component of roll gap of the rolling mill is controlled on the basis of this difference.
Description
Technical field
The present invention relates to the milling method and the rolling device of sheet metal, particularly, relate to make and do not have bending (camber), the sheet metal milling method and the rolling device of perhaps crooked extremely slight sheet metal.
Background technology
In the rolling process of sheet metal, promptly there is not the state of left and right sides curvature to be rolled there to be bending rolled plate, be not only for fear of the bad and dimensional accuracy of the flat shape of rolling stock badly, advance and afterbody obstacle (Kao Twisted り for fear of rocking) such limp (logical plate) fault also is very important.Moreover, in the present invention, in order to make narration simple, about the operation side of the rolling press about when being the front with rolling direction and driving side be also referred to as sometimes.
For such problem, open in the flat 4-305304 communique the spy and to disclose following technology, i.e. going into side and going out side at rolling press, be equipped with the device of the width position of measuring rolling stock, according to the bending of this measured value calculation rolling stock, and adjust and be provided in rolling press and go into the position of edger roll of side to revise the crooked control technology of this bending.
In addition, open in the flat 7-214131 communique the spy and to disclose following technology,, control the left and right difference of the mill opening of this rolling press, promptly press down the crooked control technology of leveling promptly according to being provided in the left and right difference of load that rolling press is gone into side and gone out the edger roll of side.
In addition, open the spy and to disclose following technology in the 2001-105013 communique, promptly analyze the measured value of the left and right difference of rolling load, control the left and right difference of mill opening then, promptly press down leveling, perhaps control the crooked control technology of the position of side rails.
In addition, open in the flat 8-323411 communique the spy and to disclose following method,, and go out side side rails constraint rolling stock promptly with the edger roll and the side rails of going into side, thus the method for carrying out crooked control.
But, above-mentioned spy open that flat 4-305304 communique is put down in writing, relate to by the width position of rolling stock and measuring in the invention of the crooked control technology that realizes, revising the bending produced is its basic way, and the generation of bending is prevented trouble before it happens to be practically impossible.
Open in the invention of that flat 7-214131 communique is put down in writing, as to relate to the edger roll load left and right difference of going into out side based on rolling press crooked control technology the spy, when having existed on the rolling stock of going into side under the crooked situation, this external cause that just becomes into the edger roll load difference of side disturbs, thereby is difficult to obtain high control precision.In addition, for fear of the situation that the rolling stock front end collides edger roll, the edger roll that goes out side must be kept out of the way when the rolling stock front end leads to plate in advance, is difficult to implement crooked control from the rolling stock front end.
In addition, the spy open that the 2001-105013 communique is put down in writing, relate in the invention of the bending control that realizes by rolling load left and right difference, rolling stock to go into side plate thick inhomogeneous on plate width direction, or the Temperature Distribution of rolling stock is under uneven situation on the plate width direction, infer crooked method precision extreme difference from the left and right difference of rolling load, very impracticable.
The spy open that flat 8-323411 communique is put down in writing, relate to by going into the side edger roll, going into the side side rails and go out in the invention of the bending control that the side side rails realizes, can retrain out the side rolling stock fully if go out the side side rails, then can use side and be bent into zero, but in order successfully to implement rolling operation, must using the side side rails in advance, to be wider than the rolled stock flitch wide, thereby will produce bending on rolling stock with this well-to-do amount.
We can say the problem of above-mentioned these conventional arts, finally is owing to the method that does not have high accuracy and measure, control because of various reasons the bending that produces without delay causes.
Summary of the invention
So, the objective of the invention is to advantageously solve the problem points of the conventional art that relates to above bending control, provide simultaneously and can not rely on rolling radical ground, stably make the milling method and the rolling device of the sheet metal that does not have the extremely slight sheet metal of bending or bending consistently.
The aim of the present invention that is used to solve the problem points of implementing such conventional art is as follows.
(1) a kind of milling method of sheet metal, it is the sheet metal milling method that utilizes the rolling press of the sheet metal that has the operation roll at least and strengthen roll to carry out, it is characterized in that, mensuration acts on the power of the rolling direction of the operation side of aforementioned operation roll and the roll chock of driving side (ロ one Le チ ヨ Star Network), calculate the operation side of this rolling direction power and the difference of driving side, and according to this difference, the left and right sides non-symmetric component of the mill opening of control rolling press.
(2) as the milling method of (1) described sheet metal, it is characterized in that, and then, measure the bending be rolled material, and according to this bending, learn the control desired value of the difference of the operation side of this rolling direction power and driving side.
(3) a kind of rolling device of sheet metal, it is the rolling device that comprises the rolling press of the sheet metal that has the operation roll at least and strengthen roll, it is characterized in that, rolling direction at the roll chock of the operation side of aforementioned operation roll and driving side is gone into side and is gone out the side both sides, possesses the load detecting device of the power that is used to measure the rolling direction that acts on this operation roll chock.
(4) as the rolling device of (3) described sheet metal, it is characterized in that, go into side in the rolling direction of aforementioned operation roll chock, go out any one party of side to have the device that is used for pushing this operation roll chock along rolling direction.
As the rolling device of (4) described sheet metal, it is characterized in that (5) device that is used for pushing along rolling direction aforementioned operation roll chock is a hydraulic means.
(6) as the rolling device of (4) or (5) described sheet metal, it is characterized in that, go into side and go out in the side in the rolling direction of aforementioned operation roll chock, with be the setover opposite side of a side of aforementioned operation roll of benchmark to strengthen roll, possess the device that is used for pushing aforementioned operation roll chock along rolling direction.
(7) as the rolling device of any described sheet metal of (3) to (6), it is characterized in that, and then, possesses the calculation apparatus that acts on the difference of the operation side of rolling direction power of aforementioned operation roll chock and driving side according to the measured value calculation that obtains by aforementioned load detecting device, calculate according to the calculation value of the difference of the operation side of this rolling direction power and driving side aforementioned rolling press mill opening left and right sides non-symmetric component controlled quentity controlled variable calculation apparatus and control the control device of the mill opening of aforementioned rolling press according to the calculation value of the left and right sides non-symmetric component controlled quentity controlled variable of this mill opening.
(8) as the rolling device of any described sheet metal of (3)～(6), it is characterized in that, and then, the crooked determinator of measuring the bending that is rolled material possessed.
(9) as the rolling device of any described sheet metal of (3)～(6), it is characterized in that, and then, possesses the calculation apparatus that acts on the difference of the operation side of rolling direction power of this operation roll chock and driving side according to the measured value calculation that obtains by aforementioned load detecting device, calculate the calculation apparatus of left and right sides non-symmetric component controlled quentity controlled variable of the mill opening of aforementioned rolling press according to this calculation value, control the control device of the mill opening of aforementioned rolling press according to the calculation value of the left and right sides non-symmetric component controlled quentity controlled variable of this mill opening, mensuration be rolled material bending crooked determinator and learn the calculation apparatus of control desired value of the difference of the operation side of this rolling direction power and driving side according to the crooked measured value that obtains by this bending determinator.
Description of drawings
Fig. 1 is the figure of preferred example of the rolling device of the rolling device of milling method of the sheet metal of the present invention of showing that schematically relevant (1) is put down in writing or the sheet metal of the present invention that (7) are put down in writing.
Fig. 2 is other the figure of preferred example of the rolling device of the rolling device of milling method of the sheet metal of the present invention of showing that schematically relevant (1) is put down in writing or the sheet metal of the present invention that (7) are put down in writing.
Fig. 3 is the figure of preferred example of the rolling device of the sheet metal of the present invention of showing that schematically (3) are put down in writing.
Fig. 4 is other the figure of preferred example of the rolling device of the sheet metal of the present invention of showing that schematically (3) are put down in writing.
Fig. 5 is the figure of preferred example of the rolling device of the sheet metal of the present invention of showing that schematically (4) or (5) are put down in writing.
Fig. 6 is the figure of preferred example of the rolling device of the sheet metal of the present invention of showing that schematically (6) are put down in writing.
Fig. 7 is other the figure of preferred example of the rolling device of the sheet metal of the present invention of showing that schematically (6) are put down in writing.
Fig. 8 is the figure that schematically shows the preferred example of the rolling device of the milling method of being put down in writing about (2) of the present invention or the rolling device of the present invention that (9) are put down in writing.
Fig. 9 is the figure that schematically shows the preferred example of the rolling device of the milling method of being put down in writing about (2) of the present invention or the rolling device of the present invention that (9) are put down in writing.
Figure 10 is the figure of variation that has showed the relation of rolling direction power left and right difference that wearing and tearing by roll etc. cause and amount of bow.
The specific embodiment
Below, the working of an invention form is described.
Generally, as the rolling reason that produces bending because of sheet material, can enumerate the roll seam set bad, be rolled material go into thick left and right difference of side plate or deformation drag left and right difference etc., but no matter under the situation of any reason, finally, owing to produce left and right difference in the extensional because of the rolling rolling direction that produces, the therefore preceding sliding rate and the rate that retreats change on plate width direction, rolling stock go out side speed and go on the side speed to produce left and right difference, and produce crooked.At this moment, for example be easy to generate crooked rolling stock leading section when rolling, because the rolling rolling stock length that goes out side that has been through with is shorter, therefore going out on the side speed to produce left and right difference under the state more freely, but in order to go on the side speed to produce left and right difference, be present in the rolling stock integral body of side must be in horizontal plane rigid rotating.But, when leading section is rolling, owing to,, produce the moment of the above-mentioned rigid rotating of opposing therefore by the weight of rolling stock self and the friction of roller-way generally going into the residual not rolling stock that has than length of side.This moment, owing to pass to the operation roll of rolling press as reaction force, so can on the rolling direction power that acts on operation roll chock portion, produce left and right difference, thus finally supported.
The milling method of the sheet metal of being put down in writing according to (1) of the present invention, owing to measure the power of rolling direction of the roll chock of the operation side act on the operation roll and driving side, calculate the difference of the rolling direction power of the rolling direction power of operation side and driving side then, therefore be rolling direction power left and right difference, can detect above-mentioned leading section main when rolling from this value by the moment of going into the effect of side rolling stock.This moment, only when having produced the left and right difference that becomes the extensional that crooked reason occurs, produce as described above, and since extensional produce roughly simultaneously this moment also produce, therefore by to the direction of dwindling the rolling direction power left and right difference, operate the left and right sides non-symmetric component of the mill opening of this rolling press, promptly press down leveling, just the generation of bending can be prevented trouble before it happens.
Above-mentioned principle, be only second to rolling stock leading section easy when rolling produce crooked rolling stock tail end when rolling too, when tail end is rolling, because the rolling rolling stock length that goes out side that has been through with is longer, therefore in the time will producing the left and right difference of extensional and preceding sliding rate, mainly produce its moment of opposing from going out the side rolling stock, because this moment is delivered to the operation roll as reaction force, therefore in this case too, by measuring the left and right difference that calculation acts on the rolling direction power of operation roll chock, just can detect the generation of the left and right difference of extensional, by to the direction of dwindling this rolling direction power left and right difference, operate the left and right sides non-symmetric component of the mill opening of this rolling press, promptly press down leveling, just the generation of the bending of tail end can be prevented trouble before it happens.
As described above such, in the method for the present invention that (1) is put down in writing, because detection assay is by the left and right difference that becomes the rolling extensional that causes that produces crooked immediate cause, and directly implement to be used for its homogenising press down the leveling operation, therefore can realize in fact not having crooked produce or crooked extremely slight rolling.
Such as (1) the record, by following method, promptly measure the power of the rolling direction on the roll chock of the operation side act on the operation roll and driving side, calculate the difference of the rolling direction power of the rolling direction power of operation side and driving side then, it is rolling direction power left and right difference, and operate the milling method that presses down leveling of this rolling press towards the direction of dwindling this rolling direction power left and right difference, just can realize in fact not having crooked produce rolling.
But, in said method, produced in wearing and tearing under the situation of the left and right difference of roller diameter or the left and right difference of coefficient of friction etc. because of roll, owing to therefore rolling direction power left and right difference might be offset, even if press down leveling so exist, can not fully prevent the mystery of crooked generation towards the direction operation of dwindling rolling direction power left and right difference.
So, in the milling method of the sheet metal of being put down in writing in (2) of the present invention, following scheme has been proposed, promptly in order to eliminate above-mentioned mystery, mensuration acts on the power of rolling direction of the roll chock of the operation side of operation roll and driving side, calculate the operation side of this rolling direction power and the difference of driving side, according to this difference, it is rolling direction power left and right difference, when implementing to press down leveling control, set the control desired value of rolling direction power left and right difference, and implement to press down leveling control in the mode that becomes this control desired value.And this controls desired value, is made as zero usually, but measure rolling back or rolling in the bending that is rolled material, and, learn the milling method of this control desired value according to this bending actual value.By controlling desired value according to the crooked actual value study after rolling like this, and to the control desired value of rolling this study of setting of this work step (パ ス), next work step or next material, thereby the wearing and tearing of modifying factor roll etc. and the skew of the rolling direction power left and right difference that produces, and can carry out correct detection assay by the left and right difference that becomes the rolling extensional that causes that produces crooked immediate cause, operate by the leveling of implementing to be used for that presses down its homogenising, just can realize in fact not having crooked the generation, perhaps crooked extremely slight rolling.
Secondly, the present invention to the rolling device of the relevant milling method that is used for the sheet metal of the present invention that enforcement (1) put down in writing describes.
In the rolling device of the sheet metal of being put down in writing in (3) of the present invention, because the both sides that go into side and go out side in the rolling direction of the roll chock of the operation side of operation roll and driving side possess load detecting device, therefore the directionality of the load measured value by considering to go into the side both sides is calculated and is made a concerted effort, no matter masterpiece is used to into the rolling direction force that spendes any direction of side, can try to achieve to act on operation side and driving side roll chock separately.And then, by calculating these rolling direction power that act on operation side roll chock and acting on the difference of the rolling direction power of driving side roll chock, just can implement the milling method of the sheet metal (1) put down in writing.
In the rolling device of the sheet metal of being put down in writing in (4) of the present invention, go into side, go out any one party of side, have the device that is used for the operation roll chock is pushed to rolling direction in the rolling direction of operation roll chock.Constitute by being made as such device, when when the operation roll chock is rolled under the state of rolling direction pushing, as described above like that when the left and right difference owing to extensional makes moment act on the operation roll from rolling stock, can directly detect, therefore can make it become responsiveness and the better crooked control system of precision as the rolling direction power left and right difference that acts on the operation roll chock.
In the rolling device of the sheet metal of being put down in writing in (5) of the present invention, the device that is used for the operation roll chock is pushed to rolling direction is a hydraulic means.By using hydraulic means push-press working roll chock, this thrust can be controlled the lower degree that in rolling operation, does not have obstacle that reaches, thereby and it can be controlled to such an extent that the higher vibration that reaches the rolling direction that alleviates the operation roll chock can make the degree of bearing block position stabilisation.
And then in the rolling device of the sheet metal of being put down in writing in (6) of the present invention, go into side and go out in the side in the rolling direction of operation roll chock, with be the opposite side of a side of reference offset operation roll to strengthen roll, possess and be used for the device of this operation roll chock along the rolling direction pushing.By such configuration, the biasing component that produces as the horizontal direction component of rolling load because of operation roll biasing, work to identical direction with in aforementioned means, making its thrust that works, therefore the thrust that should pay for the rolling direction position stability that makes this operation roll chock diminishes, can be with the pressing device miniaturization.If the rolling direction thrust with respect to the operation roll chock is excessive, then with respect to give by thickness of slab control function etc. rolling in the tracing ability of depressing position control on problem might take place, but by suppressing to avoid taking place such problem by the thrust of this rolling direction pressing device effect for less.
In the rolling device of the sheet metal of being put down in writing in (7) of the present invention, except the rolling device of any 1 sheet metal of being put down in writing of (3) to (6), also possess the calculation apparatus that calculation acts on the difference of the operation side of rolling direction power of operation roll chock and driving side, therefore can detect moment that left and right difference by the extensional of the rolling direction that becomes crooked reason causes, act on the operation roll from rolling stock.And then, owing to be equipped with according to the left and right difference that acts on the rolling direction power of operation roll chock, calculation is used for the calculation apparatus with the left and right sides non-symmetric component controlled quentity controlled variable of the mill opening of the rolling press of extensional left and right sides equalization, with calculation value according to the left and right sides non-symmetric component controlled quentity controlled variable of this mill opening, control the control device of the mill opening of this rolling press, therefore the generation of the left and right difference of extensional can be prevented trouble before it happens, and can rollingly not have bending or crooked extremely slight sheet metal.
Secondly, the present invention to the rolling device of the relevant milling method that is used for the sheet metal of the present invention that enforcement (2) put down in writing describes.
In the rolling device of the sheet metal of being put down in writing in (8) of the present invention, with (3) record rolling device of the present invention similarly, rolling direction at the roll chock of the operation side of operation roll and driving side goes into side and goes out these both sides of side to possess load detecting device, therefore the directionality of the load measured value by considering to go into out the side both sides is calculated and is made a concerted effort, no matter masterpiece is used to into going out any direction of side, also can be in the hope of acting on the rolling direction power of operation side and driving side roll chock separately, and can calculate the rolling direction power that acts on these operation side roll chocks and act on the difference of the rolling direction power of driving side roll chock.And then, owing to possessed crooked determinator, therefore can carry out study based on the crooked actual control desired value that is rolled material after rolling.Moreover, the rolling device that (8) are put down in writing, with the rolling device of (4)～(6) records similarly, be to possess the device of roll chock being pushed to rolling direction.
In the rolling device of the sheet metal of being put down in writing in (9) of the present invention, except the rolling device that (8) are put down in writing, also possesses the calculation apparatus that calculation acts on the difference of the operation side of rolling direction power of operation roll chock and driving side, therefore can detect that left and right difference by the extensional of the rolling direction that becomes crooked reason causes, act on the moment of operation roll from rolling stock, owing to possess according to the measured value that is rolled the bending of material, learn the calculation apparatus of control desired value of the difference of the operation side of this rolling direction power and driving side, therefore even if making owing to roll wear etc. under the situation that the difference of the rolling direction power that acts on this operation roll chock has been offset, also can be by revising the amount of this skew based on the study of crooked actual value, and calculate suitable control desired value.And then, owing to be equipped with according to the difference and this control desired value that act on the rolling direction power of operation roll chock, calculation is used for the calculation apparatus with the left and right sides non-symmetric component controlled quentity controlled variable of the mill opening of the rolling press of extensional left and right sides equalization, with the control device of controlling the mill opening of this rolling press according to the calculation value of the left and right sides non-symmetric component controlled quentity controlled variable of this mill opening, therefore the generation of the left and right difference of extensional can be prevented trouble before it happens, and can rollingly not have bending or crooked extremely slight sheet metal.Moreover, the rolling device that (9) are put down in writing, with rolling device that (4)～(6) are put down in writing similarly, be to possess the device of roll bearing being pushed to rolling direction.
Secondly, with reference to accompanying drawing, further specifically describe example of the present invention.
In Fig. 1, the rolling device of the milling method of the present invention that relevant (1) is put down in writing or the preferred example of the rolling device of the present invention that (7) are put down in writing have been showed.
Rolling press, possess the last operation roll 1 that is supported on the operation roll chock 5, be supported on strengthen going up going up of operation roll 1 strengthen going up on the roll chock 5 strengthen roll 3, be supported on down the following operation roll 2 on the operation roll chock 6 and be supported on strengthen under following reinforcement roll 4 on the following reinforcement roll chock 7 of operation roll 2, and possess hold-down devices 13.Moreover sheet metal 21 is rolled along rolling direction 22.
Moreover, in Fig. 1, constituting though only illustrate the device of operation side basically, driving side also possesses same device.
Act on the rolling direction power of the last operation roll 1 of rolling press, basically support by last operation roll chock 5, go into side load detecting device 10 and on last operation roll chock 5, be equipped with the operation roll chock to go out side load detecting device 9 with last operation roll, by these load detecting devices 9,10, can measure and act on the power of last operation roll chock 5 between the fixing protrusion piece (プ ロ ジ エ Network ト Block ロ Star Network) of rolling direction parts such as (figure do not show) and last operation roll chock 5.These load detecting devices 9,10 are made as the structure of measuring compression stress usually, and are because it is simple that device is constituted, therefore very desirable.In last operation roll rolling direction power calculation apparatus 14, calculation goes out the difference that side load detecting device 9 and last operation roll are gone into the measurement result that side load detecting device 10 obtains by last operation roll, and calculation acts on the rolling direction power of operation roll chock 5.And then, for the rolling direction power that acts on down operation roll 2, also go out the measured value that side load detecting device 11 and time operation roll are gone into side load detecting device 12 according to the following operation roll that goes out side and go into side that is provided in down operation roll chock 6, by following operation roll rolling direction power calculation apparatus 15, calculation acts on down the rolling direction power of operation roll chock 6.
Secondly, in operation roll rolling direction is made a concerted effort calculation apparatus 16, obtain operation roll rolling direction power calculation apparatus 14 result in and following operation roll rolling direction power calculation apparatus 15 result in and, and calculate out and act on up and down the rolling direction of operation roll and make a concerted effort.Process as described above, operation side just, driving side also constitutes with identical device implements calculation, and its result is as the operation roll rolling direction of driving side with joint efforts 17 and obtain.Then, by operation side-driving side rolling direction power difference calculation apparatus 18, the resulting in and the difference that results in of driving side of computational tasks side, and calculate thus and act on the operation side of the rolling direction power on the operation roll chock and the difference of driving side.
Secondly, according to resulting in of the difference of the operation side of this rolling direction power and driving side, in pressing down leveling controlled quentity controlled variable calculation apparatus 19, be made as suitable desired value with acting on the operation side of rolling direction power of operation roll chock and the difference of driving side, calculation is used to prevent the left and right sides non-symmetric component controlled quentity controlled variable of the mill opening of crooked rolling press.At this,, for example, calculate controlled quentity controlled variable by having considered the PID that ratio (P) gain, integration (I) gain, differential (D) gain according to the left and right difference of aforementioned rolling direction power.Then, result in according to this controlled quentity controlled variable, the left and right sides non-symmetric component of the mill opening by pressing down leveling control device 20 control rolling presses can realize not having crooked the generation thus, and is perhaps crooked extremely slight rolling.
; in said apparatus constitutes; till obtaining the resulting in of operation side-driving side rolling direction power difference calculation apparatus 18; basically just operation side and driving side are lumped together the plus-minus calculation of the output of totally 8 load detecting devices, said apparatus constitutes and the order of calculation is also harmless even if therefore at random change.For example, also can be earlier with the output addition that goes out the side load detecting device up and down, then calculate itself and the difference of going into the addition result of side, calculate the difference of operation side and driving side at last, the operation side of the output of the load detecting device of each position of all right initial calculation and the difference of driving side, to add up to up and down then, calculation is at last gone into side and is gone out the difference of side.
In Fig. 2, showed other preferred example of the rolling device of the milling method of the present invention that relevant (1) is put down in writing or rolling device of the present invention that (7) are put down in writing.In the example of Fig. 2, compare with the example of Fig. 1, omitted the checkout gear and the calculation apparatus of the rolling direction power that acts on down the operation roll chock.Generally, not necessarily act on operation roll up and down equably, at this moment change movement, the situation of reverse on operation roll up and down, can not occur being inclined to for series because of the left and right difference of extensional acts on the moment of operation roll from rolling stock.Thereby, by in pressing down leveling controlled quentity controlled variable calculation apparatus 19, setting suitable ride gain, can realize to act on the good bending control of the left and right difference of the rolling direction power of the operation roll of any one party up and down.
In addition, in the example of Fig. 1, Fig. 2, though the left and right sides non-symmetric component of mill opening is directly to control parameter, in such extremely gently the pressing down under the rolling situation of skin-pass, the situation that rolling load is carried out rolling operation as desired value is a lot.In this case, the left and right difference that also can calculate rolling load as the control desired value provides.Promptly, become according to the left and right difference that acts on the rolling direction power of operation roll chock, to the direction of its elimination is calculated the controlled quentity controlled variable of the left and right difference of rolling load, and, finally control the left and right sides non-symmetric component of mill opening by it is implemented rolling load control as desired value.
In Fig. 3, showed the preferred example of the rolling device of the present invention that (3) are put down in writing.In the rolling device of Fig. 3, support the operation roll chock along vertical direction by the roll balance gear that is built in the protrusion piece 24,25 that is fixed on the housing 23 (figure does not show).Moreover, rolling device hold-down devices 13 and on strengthen possessing rolling load detecting device 26 between the roll.And, in order to measure the power of the rolling direction that acts on operation roll chock 5, going out between side protrusion piece 24 and the last operation roll chock 5 to be equipped with the operation roll to go out side load detecting device 9, going between side protrusion piece 25 and the last operation roll chock 5 to be equipped with the operation roll to go into side load detecting device 10.In addition, in order to measure the power of the rolling direction that acts on down operation roll chock 6, go out to be equipped with between side protrusion piece 24 and the following operation roll chock 6 following operation roll to go out side load detecting device 11, going into to be equipped with between side protrusion piece 25 and the following operation roll chock 6 following operation roll to go into side load detecting device 12.Like this, by going into side, going out the side both sides and be equipped with load detecting device, no matter power in the operation roll chock, can correctly be measured the size of this power along any directive effect of rolling direction.
In Fig. 4, showed other preferred example of rolling device of the present invention that (3) are put down in writing.In the rolling device of Fig. 4, last reinforcement roll chock 7 is the forms that last operation roll chock 5 wrapped in the inside, in this case, in order to measure the rolling direction power that acts on operation roll chock 5, last operation roll chock 5 and on strengthen being equipped with between the roll chock 7 the operation roll go out side load detecting device 9 and on the operation roll go into side load detecting device 10.At this moment, by in the going into side, go out the side both sides and be equipped with load detecting device of operation roll chock, no matter power in the operation roll chock, can correctly be measured the size of this power along any directive effect of rolling direction.
In Fig. 5, showed the preferred example of the rolling device of the sheet metal of the present invention that (4) or (5) are put down in writing.In the rolling device of the sheet metal of Fig. 5, go into side and last operation roll at last operation roll chock 5 are gone into side load detecting device 10 and are adjacent to have into side operation roll chock pressing device 27, with the pushing force of regulation operation roll chock 5 are gone out the thruster pressure from going into side direction.By being made as such formation, can make the rolling direction position stability of operation roll chock 5, can improve the responsiveness and the precision of the mensuration of the rolling direction power that acts on operation roll chock 5 simultaneously.Moreover, in the rolling device of Fig. 5, going into side operation roll chock pressing device 27 is hydraulic means, by being made as such formation, even if the operation roll chock is under the situation of rolling direction moment ground vibration when nipping as rolling stock, stable thrust is worked, thereby make the action of operation roll chock stable.
In Fig. 6, showed the preferred example of the rolling device of the sheet metal of the present invention that (6) are put down in writing.In the rolling device of the sheet metal of Fig. 6, last operation roll is to going out side direction biasing △ x, is equipped with into side operation roll chock pressing device 27 in the side of going into of last operation roll chock 5.By being made as such configuration, because act on the bias force of operation roll 1 works to the direction that goes out the thruster pressure along going up operation roll chock 5 from last reinforcement roll 3, therefore can alleviate power, can be made into small-sized and cheap equipment into side operation roll chock pressing device 27.In addition, owing to can alleviate simultaneously the power of operation roll chock 5 in the clamping, therefore can also control other the outer factor of disturbing of control less.Moreover, in the rolling device of the sheet metal of Fig. 6, go into side load detecting device 10 though omitted last operation roll, but this is the sensor (figure does not show) that offers as the pressure of the work oil of the hydraulic cylinder of going into side operation roll chock pressing device 27 of Fig. 6 of hydraulic means by be equipped with measuring, and hydraulic means is substituted the example of making load detecting device.
In Fig. 7, showed other preferred example of the rolling device of the sheet metal of the present invention that (6) are put down in writing.In the rolling device of the sheet metal of Fig. 7, except the example of Fig. 6, be equipped with side operation roll chock position control 28 in the side that goes out of last operation roll chock.This goes out side operation roll chock position control 28 also is hydraulic means, in the rolling device of Fig. 6, in form clamp operation roll chock 5 with the hydraulic cylinder of going into side and going out side, under the situation of using out side operation roll chock position control 28, be equipped with side operation roll chock position detecting device 29 and carry out Position Control, the chucking power that becomes bearing block is by going into the structure that side operation roll chock pressing device is paid.By being made as such structure, just can paying the amount of bias that to adjust the operation roll or and strengthen the additional control ability of the small angle of cut etc. between the roll.
, in Fig. 5,6,7 example, though showed at rolling press and go into the example that side is equipped with operation roll chock pressing device, it is also harmless on the contrary it to be provided in out side.Just, must keep with the relative position of Fig. 6,7 operation roll biasing and concern.
In addition, in Fig. 5,6,7 example, only showed near the example the last operation roll chock, but be applicable to down that the example of situation of operation roll chock is also basic identical.
Secondly in Fig. 8, the rolling device of the milling method of the present invention that relevant (2) are put down in writing or the preferred example of the rolling device of the present invention that (9) are put down in writing have been showed.Moreover, though only having showed the device of operation side basically, Fig. 8 constitutes, also there is same device in driving side.Act on the rolling direction power of the last operation roll 1 of rolling press, basically supported by last operation roll chock 5, but on last operation roll chock, be equipped with the operation roll chock to go out side load detecting device 9 and last operation roll is gone into side load detecting device 10, can measure to act on last operation roll chock along the power between the fixing protrusion piece of rolling direction parts such as (figure do not show) and the last operation roll chock.Simple for device is constituted, preferably these load detecting devices are made as the structure of measuring compression stress usually.In last operation roll rolling direction power calculation apparatus 14, calculation goes out the difference that side load detecting device 9 and last operation roll are gone into the measurement result that side load detecting device 10 obtains by last operation roll, and calculation acts on the rolling direction power of operation roll chock 5.And then, for the rolling direction power that acts on down operation roll 2, according to the following operation roll that goes out side and go into side that is provided in down operation roll chock 6 go out side load detecting device 11 and down the operation roll go into the measured value of side load detecting device 12, by following operation roll rolling direction power calculation apparatus 15, calculation acts on down the rolling direction power of operation roll chock 6.Secondly, in operation roll rolling direction is made a concerted effort calculation apparatus 16 down, obtain operation roll rolling direction power calculation apparatus 14 result in and following operation roll rolling direction power calculation apparatus 15 result in and, and calculation acts on up and down the rolling direction of operation roll and makes a concerted effort.The process of implementing, operation side just, driving side also constitutes with identical device implements calculation, and its result is as the operation roll rolling direction of driving side with joint efforts 17 and obtain.Then, by resulting in and the difference that results in of driving side of operation side-driving side rolling direction power difference calculation apparatus 18 computational tasks sides, and calculate operation side and the difference of driving side, i.e. the rolling direction power left and right difference of the rolling direction power act on the operation roll chock thus.
Secondly, in control desired value calculation apparatus 31, the control desired value of calculation rolling direction power left and right difference describes this calculation method.Usually, the control desired value of rolling direction power left and right difference is zero, controls the left and right sides non-symmetric component of the mill opening of rolling press by the mode that becomes this control desired value with rolling direction power left and right difference, can prevent crooked generation.But under the situation of the left and right difference of left and right difference that has produced roller diameter because of the wearing and tearing of roll etc. or coefficient of friction, therefore rolling direction power left and right difference is offset probably, and at this moment, the control desired value is not zero, and must change to suitable value.Figure 10 is the figure of variation that has showed the relation of rolling direction power left and right difference that wearing and tearing by roll etc. cause and amount of bow.As shown in figure 10, rolling direction power left and right difference and amount of bow concern straight line A, because of the almost parallel ground displacements as concerning straight line B such as wearing and tearing of roll.At this moment, be zero in order to make amount of bow, control desired value A ' must be changed to control desired value B '.In addition, the such rolling direction power left and right difference and the displacement that concerns straight line of amount of bow and control desired value change, by measure rolling in or rolling after amount of bow can judge at an easy rate.Promptly, if implemented the result of control as shown in Figure 10 in the mode that becomes control desired value A ', crooked actual value is made as and is not zero, but crooked actual value C, the relation of rolling direction power left and right difference and amount of bow then, can think skew for as straight line B, therefore control desired value B ' as long as in this work step, next work step or next material rolling, change to.In addition, because the skew of the rolling direction power left and right difference that this roll wear causes might increase and change along with rolling radical, therefore must learn always and change the control desired value.Moreover, the α among the figure
A, and α
B, be respectively the inclination that concerns straight line A and B of rolling direction power left and right difference and amount of bow, be fixed number by the decisions such as deformation drag of size, rolling condition and the rolling stock of rolling press.Under these tilt situation about changing because of roll wear etc., must distinguish in advance by preliminary experiment etc.Just, though because of rolling condition and rolling material change, as long as term harmonization, the then α of first approximation
AAnd α
BAbout equally, also can be made as α
A=α
B(=α).But, since exist according to rolling condition through the time ground situation about changing, therefore also can measure α termly
BValue.
So in the present invention, by following method, be rolled the study of the control desired value of direction power left and right difference.As shown in Figure 8, possess crooked determinator 30 in the back of rolling press, in can being rolled or the mensuration of the bending that is rolled material after rolling, the value of the amount of bow of mensuration is transmitted to control desired value calculation apparatus 31.At control desired value calculation apparatus 31, according to the measured value of this amount of bow, use the bright method of stating, desired value is controlled in calculation in this work step, next work step or next material rolling.This controls desired value, must increase and study and change along with rolling radical, therefore for example, needs only with each work step of following numerical expression (1) or every rolling stock ground study.
C
(n)＝C
r (n-1)*γ+C
(n-1)*(1-γ)………(1)
Wherein, C
(n)Be the control desired value of n work step or n root rolling stock, C
r (n)Be the control desired value according to the crooked actual value correction of n work step or n root rolling stock, γ is study gain (0～1.0).
According to resulting in of the difference of the operation side of this control desired value of calculating by above mode and this rolling direction power and driving side, in pressing down leveling controlled quentity controlled variable calculation apparatus 19, calculation is used to prevent the left and right sides non-symmetric component controlled quentity controlled variable of the mill opening of crooked rolling press.Moreover in the stage of not surveying rolling first amount of bow, the control desired value is as long as set the value or zero of for example touching the rolling direction power left and right difference that produces when roll (キ ス ロ one Le) pins.In addition,, utilize and considered that for example ratio (P) gain, integration (I) gain, the PID of differential (D) gain calculates the left and right sides non-symmetric component controlled quentity controlled variable of mill opening with respect to the left and right difference of aforementioned rolling direction power and the control desired value of trying to achieve at this by numerical expression (1).Result in according to this controlled quentity controlled variable then,, can realize not having crooked produce or crooked extremely slight rolling by left and right sides non-symmetric component by the mill opening that presses down leveling control device 20 control rolling presses.Moreover, in this work step, when change control desired value, as long as in rolling, dynamically change the control desired value in the stage of having surveyed amount of bow.
In Fig. 9, showed other preferred example of the rolling device of the milling method of the present invention that relevant (2) are put down in writing or rolling device of the present invention that (9) are put down in writing.In the example of Fig. 9, compare with the example of Fig. 8, omitted the checkout gear and the calculation apparatus of the rolling direction power that acts on down the operation roll chock.Generally act on the moment of operation roll from rolling stock because of the left and right difference of extensional, not necessarily act on operation roll up and down equably, at this moment change movement for series, though be not inclined to situation about reversing on the operation roll up and down, might be offset the zero point of rolling direction power left and right difference.At this moment by measure rolling in or rolling after the bending that is rolled material, and according to changing crooked actual value, mode to the control desired value of the rolling setting study of this work step, next work step or next material, also can revise the skew of rolling direction power left and right difference, therefore can realize to act on the good bending control of the left and right difference of the rolling direction power of either party operation roll up and down.
, in the example of Fig. 8, Fig. 9, with the example that in Fig. 5,6,7 example, illustrates similarly, also can go into side and be equipped with operation roll chock pressing device at rolling press, it is also harmless on the contrary it to be provided in out side.Just, must keep with the relative position of Fig. 6,7 operation roll biasing and concern.
In addition, similarly also Fig. 5,6,7 example can be applicable to down the operation roll chock.
Embodiment
With rolling press shown in Figure 8, the embodiment when being suitable for the plate rolling method of (2) of the present invention being put down in writing describes.The study of control desired value that will be output as the rolling direction power left and right difference on basis with the crooked determinator 30 of rolling press back is made as study gain gamma 0.3, the control desired value at initial stage is made as zero implements.Moreover the fixed number α of the inclination that concerns straight line of expression rolling direction power left and right difference and amount of bow sets the fixed number of the scope of 0.5～20tonf/ (mm/m) according to rolling condition and each rolling stock material.
In table 1, control desired value and crooked measured value have been showed with respect to the rolling direction power left and right difference of the rolling radical of representing.As shown in table 1, the crooked measured value of every 1m as can be known no matter in the rolling radical of any representative, all is suppressed in 0.15mm/m or less like this value below it.In addition, along with rolling radical increases, the control desired value of rolling direction power left and right difference is because of the study based on crooked measured value changes as can be known.The variation of such control desired value, be considered to cause by the wearing and tearing of strengthening roll, operation roll etc., in the method for the study of as plate rolling method of the present invention, not controlling desired value, implement control owing to comprise these source of errors, therefore compare with method of the present invention, be envisioned that crooked can the change greatly.
(table 1)
As shown above, can confirm following situation, promptly as plate rolling method of the present invention, pass through according to the crooked actual value after rolling, study control desired value, and to the mode of the control desired value of rolling this study of setting of next work step, can revise the skew of rolling direction power left and right difference, and correctly detection assay by the left and right difference of the rolling extensional that causes that becomes the crooked immediate cause that produces, by implement to be used for its homogenising press down the leveling operation, just can not exist with ... rolling radical ground and realize extremely slight rolling of bending consistently.
Industrial utilizability
By adopting milling method Yi and the rolling device of sheet metal of the present invention, can decide by Wen, and And do not exist with ... Zha radical processed ground consistently Zao processed do not have bending, or crooked extremely slight sheet metal, And can realize the productivity Yi of Zha operation processed of sheet metal and the significantly raising of qualification rate.
Claims (9)
1. the milling method of a sheet metal, it is the milling method that utilizes the sheet metal that the rolling press of the sheet metal that has the operation roll at least and strengthen roll carries out, it is characterized in that, mensuration acts on the power of rolling direction of the roll chock of the operation side of aforementioned operation roll and driving side, calculate the operation side of this rolling direction power and the difference of driving side, and according to this difference, the left and right sides non-symmetric component of the mill opening of control rolling press.
2. the milling method of sheet metal as claimed in claim 1 is characterized in that, and then, measure the bending be rolled material, and according to this bending, learn the control desired value of the difference of the operation side of this rolling direction power and driving side.
3. the rolling device of a sheet metal, it is the rolling device that comprises the rolling press of the sheet metal that has the operation roll at least and strengthen roll, it is characterized in that, rolling direction at the roll chock of the operation side of aforementioned operation roll and driving side is gone into side and is gone out the side both sides, possesses the load detecting device of the power that is used to measure the rolling direction that acts on this operation roll chock.
4. the rolling device of sheet metal as claimed in claim 3 is characterized in that, goes into side in the rolling direction of aforementioned operation roll chock, goes out any one party of side, has the device that is used for pushing along rolling direction this operation roll chock.
5. the rolling device of sheet metal as claimed in claim 4 is characterized in that, the device that is used for pushing along rolling direction aforementioned operation roll chock is a hydraulic means.
6. as the rolling device of claim 4 or the described sheet metal of claim 5, it is characterized in that, go into side and go out in the side in the rolling direction of aforementioned operation roll chock, with be benchmark and, possess the device that is used for pushing aforementioned operation roll chock to strengthen roll along rolling direction with the opposite side of a side of aforementioned operation roll biasing.
7. as the rolling device of claim 3 to any described sheet metal of claim 6, it is characterized in that, and then, possesses the calculation apparatus that acts on the difference of the operation side of rolling direction power of aforementioned operation roll chock and driving side according to the measured value calculation that obtains by aforementioned load detecting device, calculate according to the calculation value of the difference of the operation side of this rolling direction power and driving side aforementioned rolling press mill opening left and right sides non-symmetric component controlled quentity controlled variable calculation apparatus and control the control device of the mill opening of aforementioned rolling press according to the calculation value of the left and right sides non-symmetric component controlled quentity controlled variable of this mill opening.
8. as the rolling device of any described sheet metal of claim 3～6, it is characterized in that, and then, the crooked determinator of measuring the bending that is rolled material possessed.
9. as the rolling device of any described sheet metal of claim 3～6, it is characterized in that, and then, possesses the calculation apparatus that acts on the difference of the operation side of rolling direction power of this operation roll chock and driving side according to the measured value calculation that obtains by aforementioned load detecting device, calculate the calculation apparatus of left and right sides non-symmetric component controlled quentity controlled variable of the mill opening of aforementioned rolling press according to this calculation value, control the control device of the mill opening of aforementioned rolling press according to the calculation value of the left and right sides non-symmetric component controlled quentity controlled variable of this mill opening, mensuration be rolled material bending crooked determinator and learn the calculation apparatus of control desired value of the difference of the operation side of this rolling direction power and driving side according to the crooked measured value that obtains by this bending determinator.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003077025 | 2003-03-20 | ||
| JP077025/2003 | 2003-03-20 | ||
| JP028743/2004 | 2004-02-05 |
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| Publication Number | Publication Date |
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| CN1761539A true CN1761539A (en) | 2006-04-19 |
| CN100398226C CN100398226C (en) | 2008-07-02 |
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ID=36707305
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800075055A Expired - Lifetime CN100398226C (en) | 2003-03-20 | 2004-03-12 | Method and apparatus for rolling metallic plate material |
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| Country | Link |
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| CN (1) | CN100398226C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102107219B (en) * | 2009-12-25 | 2012-12-19 | 鞍钢股份有限公司 | Hydraulic control method for asymmetric roller bending of rolling mill |
| CN104023864A (en) * | 2012-06-26 | 2014-09-03 | 新日铁住金株式会社 | Sheet metal rolling device |
| CN112243394A (en) * | 2018-05-29 | 2021-01-19 | 日本制铁株式会社 | Rolling mill and setting method of rolling mill |
| CN113056337A (en) * | 2019-01-25 | 2021-06-29 | 普锐特冶金技术日本有限公司 | Rolling equipment and rolling method |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5949084B2 (en) * | 1976-03-26 | 1984-11-30 | 住友金属工業株式会社 | Inter-stand tension control method for steel bar wire rod rolling mill |
| JPS5724402Y2 (en) * | 1976-11-12 | 1982-05-27 | ||
| JPS5973109A (en) * | 1982-10-20 | 1984-04-25 | Kawasaki Steel Corp | Method for controlling width camber in temper rolling |
| JPS59110408A (en) * | 1982-12-15 | 1984-06-26 | Sumitomo Metal Ind Ltd | Camber correcting method |
| JPS6046812A (en) * | 1983-04-04 | 1985-03-13 | Nippon Steel Corp | Tension meter device in rolling mill |
| JPS59189012A (en) * | 1983-04-12 | 1984-10-26 | Ishikawajima Harima Heavy Ind Co Ltd | Device for controlling lateral deviation of rolling material |
| CN2093045U (en) * | 1990-11-21 | 1992-01-15 | 唐山钢铁公司带钢厂 | Ultra-high pressure fine-adjusting device for rolling of rolling mill |
| JPH07214131A (en) * | 1994-02-07 | 1995-08-15 | Nippon Steel Corp | Rolling controller |
| JP4551027B2 (en) * | 2001-05-24 | 2010-09-22 | 新日本製鐵株式会社 | Zero point adjustment method for sheet rolling mill |
-
2004
- 2004-03-12 CN CNB2004800075055A patent/CN100398226C/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102107219B (en) * | 2009-12-25 | 2012-12-19 | 鞍钢股份有限公司 | Hydraulic control method for asymmetric roller bending of rolling mill |
| CN104023864A (en) * | 2012-06-26 | 2014-09-03 | 新日铁住金株式会社 | Sheet metal rolling device |
| CN104023864B (en) * | 2012-06-26 | 2016-05-11 | 新日铁住金株式会社 | The rolling device of sheet metal |
| CN112243394A (en) * | 2018-05-29 | 2021-01-19 | 日本制铁株式会社 | Rolling mill and setting method of rolling mill |
| CN113056337A (en) * | 2019-01-25 | 2021-06-29 | 普锐特冶金技术日本有限公司 | Rolling equipment and rolling method |
| CN113056337B (en) * | 2019-01-25 | 2023-11-28 | 普锐特冶金技术日本有限公司 | Rolling equipment and rolling method |
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| Publication number | Publication date |
|---|---|
| CN100398226C (en) | 2008-07-02 |
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