CN100998993A - Bidimensional decomposition rolling mill - Google Patents
Bidimensional decomposition rolling mill Download PDFInfo
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- CN100998993A CN100998993A CN 200610128349 CN200610128349A CN100998993A CN 100998993 A CN100998993 A CN 100998993A CN 200610128349 CN200610128349 CN 200610128349 CN 200610128349 A CN200610128349 A CN 200610128349A CN 100998993 A CN100998993 A CN 100998993A
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Abstract
A 2D decomposed roller holder is composed of machine frame, upper roller holder, lower roller holder, upper and lower roller system with tower structure, and symmetric two press-down units. It features that said upper roller holder is composed of overlapped the first roller holder linked with said press-down unit and the second one linked with said upper roller system.
Description
Technical field
The present invention relates to a kind of cold rolling mill that is used for production strip material, particularly just reduce roll two-dimensional directional amount of deflection, can make rolling strip material have a kind of Bidimensional decomposition rolling mill of very high transverse gage precision characteristic.
Background technology
In the strip material was produced, the thickness and precision of product and plate shape glacing flatness were the important indicators of reflection product quality.The thickness automatic control technology has developed into very high level in recent years, palette shape flatness Control Technology is among the research always, and still there is serious lateral thickness difference problem in the milling train of prior art various ways when the strip of rolling big flakiness ratio.The lateral thickness difference of strip material depends on the size and shape of roll work roll gap, and the one of the main reasons that influences the work roll gap is the flexural deformation of roll, under the effect of huge roll-force, the flexural deformation that roll produces has changed the shape of work roll gap, therefore produces lateral thickness difference.
In recent years, prior art is devoted to study the flexural deformation that reduces roll always, comprises roll design method and roll shape method of adjustment.The roll design method is to design original roller type by metastable rolling load for foundation, wears into the CVC milling train of sigmoid curve etc. as VC variable convex roll, with working roll, compensates for the influence of the flexural deformation of roll to the work roll gap by roll design.But milling train its roll-force in the operation of rolling changes, the factor of influence of rolled power is a lot, sotck thinkness, width difference, rolled piece mechanical performance are inhomogeneous, rolling condition changes the fluctuation that (as mill speed, temperature, friction condition, front and back tension change etc.) etc. all can cause roll-force, also fluctuate along with the fluctuation of roll-force with regard to the flexural deformation that causes roll, original roller type can not adapt to this fluctuation, so the roll design method can't thoroughly solve the lateral thickness difference problem of strip material.
The HC milling train is a kind of milling train that adopts the roll shape method of adjustment, and its operation principle and structure are to grow up on the basis of traditional four-high mill.Its structure is to increase by two breast rolls that can move as rightabout in the axial direction between the upper and lower working roll of roller system and backing roll, by moving axially of breast roll plate shape is controlled, and plays certain effect.But because the screwdown gear of this version is positioned at the roll neck place (as shown in Figure 1) of roll, working roll bears a bigger additional flexure stress all the time, therefore makes the working roll amount of deflection become big, causes the bad and edge thinning of plate deformation.In order to reduce bending of work roll, the HC milling train in use generally need cooperate roll-bending device, and the HC milling train also exists the bending of work roll distortion along with roll-force changes and technological deficiencies such as variation in addition.
Sendzimir 20 roller widestrip mills also are to adopt the roll shape method of adjustment to solve the milling train of strip material lateral thickness difference problem, and Fig. 2 is the structural representation of Sendzimir 20 roller widestrip mills.Sendzimir 20 roller widestrip mills comprise whole frame, compositions such as tower rollers system, roll transmission device, screwdown gear, roll shape adjustment and compensation arrangement up and down.Frame 10 as a whole foundry goods, process 8 plum blossom shape through holes in the single-casting, in order to backing roll 32 to be installed, act on the roll-force on the working roll 31, being radial by intermediate calender rolls 33 is distributed on each backing roll 32, and each backing roll 32 is the form of many fulcrums beam, and roll-force is passed to whole frame 10 along the bearing block (saddle) of barrel length direction by backing roll 32.Its roll shape is regulated and is turned round by hydraulic motor and worm screw that screwed eccentric hoop moves on each saddle.The eccentric hoop that on purpose turns round corresponding saddle according to milled sheet shape situation makes bent spindle, to eliminate local or overall inhomogeneous deformation.Simultaneously, depress than defectives such as narrowing toward each end generation edge thinnings, an end of first intermediate calender rolls is processed into taper at the intermediate portion.This shows, Sendzimir 20 roller widestrip mills are that a plurality of bracing or strutting arrangements are set on the backing roll of milling train, and by numerous monitorings, control appliance control bracing or strutting arrangement moves the distortion of revising backing roll or working roll, this method makes the rolling mill structure complexity on the one hand, volume increases, cost rises suddenly, on the other hand owing to be to adopt the roll shape of backing roll is carried out passive adjustment, control, adjustment process is very complicated, and uncertain factor is many, in fact be difficult to realize effective roll shape distortion correction, therefore also do not solve the lateral thickness difference problem of strip material well; The rigidity of this milling train is very big, the as a whole foundry goods of frame because the restriction of physical dimension relation, milling train to depress adjusting range little, adjust, complicated operation, the thickness of rolled band steel is restricted, broken belt curling round the roll fault appears and after, difficult treatment and time-consuming.
Milling train industry striving direction for many years is exactly the lateral thickness difference problem that how to reduce rolled parts.Stressed and produce in the parts of amount of deflection deformation at mill milling, mainly be working roll, backing roll and roller base, interact, transmit roll-force between them.In recent years, along with the appearance of changing into the novel rolling mill that acts on the roller base top at working roll axle journal place of the active position of screwdown gear and adjusting device by the past, plate shape control problem has obtained good solution, and the dimensional accuracy of the lateral cross section of its rolled parts has obtained significantly improving.Milling train industry striving direction for many years is exactly the lateral thickness difference problem that how to reduce rolled parts.Stressed and produce in the parts of amount of deflection deformation at mill milling, mainly be working roll, backing roll and roller base, interact, transmit roll-force between them.Multi-roll mill for tower rollers system, roll-force through working roll, intermediate calender rolls and backing roll transmission exists vertical stress component and horizontal component, wherein horizontal component not only can make the distortion that working roll, intermediate calender rolls and backing roll produce horizontal direction, also further makes roller base produce the distortion of horizontal direction.The distortion of roller base horizontal direction can make bending of work roll distortion aggravation, changes the shape of work roll gap, influences the plate shape glacing flatness of strip material.
In the processing process of roller base, because roller base is very huge and longer, open the hole thereon, be difficult to guarantee the glacing flatness and the precision in hole, if will process a plurality of parallel via holes on a roller base, its precision just more be cannot say for sure to demonstrate,prove.
Summary of the invention
Technical problem to be solved of the present invention is the two-dimentional deflection deformation problem at roll in the prior art, a kind of cold rolling mill of novel control two dimension deflection degree is provided, this Bidimensional decomposition rolling mill not only can reduce the deflection deformation of vertical direction, and can reduce the deflection deformation of horizontal direction, simultaneously, it is little that roller base is decomposed into volume, the lightweight roller base that respectively decomposes, thereby can improve the precision of processing, guarantee the glacing flatness in hole, when assembling, therefore pad adjustment between can leaning on has again reduced the lateral thickness difference of rolled parts, has improved the dimensional accuracy of rolled parts.Can be used in the production of strip material.
For this reason, the invention provides a kind of Bidimensional decomposition rolling mill, comprise frame, the frame content is equipped with topping roll seat and lower roller base, described upper and lower roller base connects top roll system and the lower roll system that is positioned to pyramidal structure respectively in multi-point support beam mode, wherein, described frame is to surround the framework integral body that constitutes by panel, backboard, top board and base plate, and backboard and panel surface offer charging aperture and the discharging opening for the rolled parts turnover respectively; Be arranged with two screwdown gears between the top board of described frame and the described topping roll seat, described screwdown gear is that axis direction is arranged and is pressed on the described topping roll seat by the breading cap mode along described top roll, and what two screwdown gears acted on described topping roll seat acts on described topping roll seat at a distance of the distance between two force positions farthest at a distance of the distance between two nearest force positions less than described topping roll system; Described topping roll seat is for vertically to divide the two stacked first topping roll seat of establishing and the second topping roll seats, the described first topping roll seat to be connected with described screwdown gear, and the described second topping roll seat is to be connected with described top roll.
In technique scheme, be provided with horizontal cushion block between described first topping roll seat and the described second topping roll seat; The described second topping roll seat is the separated roller seat of left and right symmetry on axial cross section; The described second topping roll seat on the axial cross section is being separated roller seat more than 2; Be vertically installed with the horizontal support device that is used to reduce topping roll seat horizontal direction deflection degree between the lateral surface of the described second topping roll seat and described backboard, the panel respectively; Described horizontal support device is one or two; A described horizontal support device is arranged on the sidewall that described topping roll seat is positioned at the backboard of described frame or panel between two parties, and a described horizontal support device acts on described topping roll seat and acts on described topping roll seat less than described topping roll seat at a distance of the distance between two force positions farthest at a distance of the distance between two force positions farthest; Described two horizontal support device are symmetricly set on described topping roll seat and are positioned on the sidewall of the backboard of described frame and panel, and two horizontal support device act on described topping roll seat and act on described topping roll seat less than described topping roll seat at a distance of the distance between two force positions farthest at a distance of the distance between two nearest force positions; Described horizontal support device is a cushion block; Described cushion block is to be made up of two wedge shape parts, and the inclined plane of described two wedge shape parts fits tightly relatively.
Between described lower roller base and the described base plate also level be provided with the vertical support device that is used to support vertical rolling active force; Described vertical support device is one or two; A described vertical support device is arranged on the below of described lower roller base between two parties, and it is to act on described lower roller base at a distance of the distance between two force positions farthest at a distance of the distance between two force positions farthest less than described bottom roll that described vertical support device acts on described lower roller base; Described two vertical support devices are symmetricly set on the below of described lower roller base, and it is to act on described lower roller base at a distance of the distance between two force positions farthest at a distance of the distance between two nearest force positions less than described bottom roll that described two vertical support devices act on described lower roller base.
Described lower roller base is for vertically to divide two stacked first lower roller base of establishing and second lower roller bases, described first lower roller base to be positioned at the below of described second lower roller base, and described second lower roller base is to be connected with described lower roll; Be provided with horizontal cushion block between described first lower roller base and described second lower roller base; Described second lower roller base is the separated roller seat of left and right symmetry on axial cross section; Described second lower roller base on the axial cross section is being separated roller seat more than 2; Be vertically installed with the horizontal support device that is used to reduce lower roller base horizontal direction deflection degree respectively between the lateral surface of described second lower roller base and described backboard, the panel; Described horizontal support device is one or two; A described horizontal support device is arranged on the below of described lower roller base between two parties, and it is to act on described lower roller base at a distance of the distance between two force positions farthest at a distance of the distance between two force positions farthest less than described bottom roll that a described horizontal support device acts on described lower roller base; Described two horizontal support device are symmetricly set on the below of described lower roller base, and it is to act on described lower roller base at a distance of the distance between two force positions farthest at a distance of the distance between two nearest force positions less than described bottom roll that described two horizontal support device act on described lower roller base.
The beneficial effect that the present invention brings is as follows:
The present invention not only can reduce the deflection deformation of vertical direction, and can reduce the deflection deformation of horizontal direction, simultaneously, because roller base is decomposed, makes that decomposing handling ease realizes, and volume weight all reduces to cause the raising of the precision of processing.Simultaneously, when assembling, the thickness by cushion block between adjusting can meet the requirements of precision, so the precision of assembling has also improved.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is the roll force analysis figure of prior art;
Fig. 2 is the structural representation of Sendzimir 20 roller widestrip mills;
Fig. 3 is the perspective view of first embodiment of the invention;
Fig. 4 is the lateral sectional view in the A-A cross section of Fig. 3;
Fig. 5 is the lateral sectional view in the C-C cross section of Fig. 3;
Fig. 6 is the stressed schematic diagram of topping roll seat;
Fig. 7 is provided with horizontal support device B-B sectional view for sidewall;
Fig. 8 is a stand stretch schematic diagram of the present invention;
Fig. 9 a, Fig. 9 b are screwdown gear and topping roll seat pressing schematic diagram;
Figure 10 is the stressed schematic diagram of lower roller base when a vertical support device is set;
Figure 11 is provided with the structural representation of screwdown gear for the many rows of the present invention;
Figure 12 is a plurality of structural representations that screwdown gear is set of the present invention one row;
Figure 13 is the force analysis figure of topping roll seat;
Figure 14 is the force analysis figure of lower roller base;
Figure 15 is the structural representation of fourth embodiment of the invention;
Figure 16 is the lateral sectional view of Figure 15.
Description of reference numerals:
The 10-frame; 20,20A, 20B-screwdown gear;
The 21-presses lever; The 22-ball ring;
The last tower rollers of 30-system; Tower rollers system under the 40-;
50-topping roll seat; The 60-lower roller base;
70-vertical support device; The 80-horizontal support device;
The 100-rolled parts; The 11-panel;
The 12-backboard; The 13-top board;
The 14-base plate; The 121-charging aperture;
The 111-discharging opening; The 31-top working roll;
32-upper support roller; The 41-bottom working roll;
42-lower support roller; 321-axle core;
The 322-back lining bearing; 51-topping roll seat outermost brace summer;
The 50a-first topping roll seat; The 50b-second side topping roll seat;
The 90-pad; 61-lower roller base outermost brace summer.
The specific embodiment
Fig. 3 is the perspective view of first embodiment of the invention, and Fig. 4 is the lateral sectional view in the A-A cross section of Fig. 3, and Fig. 5 is the lateral sectional view in the C-C cross section of Fig. 3.As Fig. 3, Fig. 4, shown in Figure 5, present embodiment is a twelve high mill, agent structure comprises frame 10, frame 10 contents are equipped with topping roll seat 50 and lower roller base 60, topping roll seat 50 and lower roller base 60 again respectively with multi-point support beam mode be connected tower rollers be 30 and following tower rollers be 40, also comprise screwdown gear 20 and horizontal support device 80.Frame 10 is to surround the framework integral body that constitutes by panel 11, backboard 12, top board 13 and base plate 14.Backboard 12 surfaces offer the charging aperture 121 that enters for rolled parts 100, and panel 11 surfaces offer discharging opening 111.Frame 10 can be a monoblock cast frame, or the whole frame that pieces together by connected modes such as welding.Last tower rollers is 30 to comprise a top working roll 31, several live-rollers and several upper support rollers 32; Following tower rollers is 40 to comprise a bottom working roll 41, several live-rollers and several lower support rollers 42, and top working roll 31 and bottom working roll 41 are symmetricly set on the upper and lower both sides of rolled parts 100.Topping roll seat 50 and lower roller base 60 are the multi-point support girder construction, generally more than two strong points (as shown in Figure 4) at least, the multi-point support beam of topping roll seat 50 and 32 support and connection of upper support roller, the multi-point support beam of lower roller base 60 and 42 support and connection of lower support roller, upper and lower roller base all can move up and down in the window of frame 10, and drives upper and lower tower rollers and fasten down and move the width of adjusting the work roll gap.Particularly, each upper support roller 32 is formed with several back lining bearings 322 on it by being installed in support roll shaft core 321, axle core 321 is affixed with the brace summer of topping roll seat 50, and back lining bearing 322 outer rims and top working roll 31 are fitted, and roll with top working roll 31 during work; The structure of lower support roller 42 is identical with upper support roller 32.
In the present embodiment, topping roll seat 50 is the roller bases that original roller base are decomposed into split, be the vertically up and down first topping roll seat 50a and the second topping roll seat 50b of two-layer setting, as shown in Figure 3, the first topping roll seat 50a is connected with screwdown gear, and the second topping roll seat 50b is connected with top roll system.Back cushion sheet 90 is adjusted between the first topping roll seat and the second topping roll seat.
In the above-described embodiments, the second topping roll seat 50b can also resolve into a plurality of decomposition roller bases again, it on axial cross section the separated roller seat of left and right symmetry, the second topping roll seat on the axial cross section is being separated roller seat more than 2, as shown in Figure 5, the second topping roll seat can be decomposed into left 50b1, middle 50b2, right 50b3.Present embodiment resolves into several little structures with a big roller base, be convenient to processing, because for too big too heavy object, opening the hole thereon is to be difficult to guarantee precision, to open a plurality of through holes thereon still more, also to guarantee the required precisions such as the depth of parallelism between each through hole simultaneously, with regard to more difficult reaching, the present invention decomposes it, each through hole of processing in each split, afterwards, in its assembling, the pad that adds in the middle of during again by each split part assembling is adjusted the indexs such as the depth of parallelism in each hole, like this, just improve machining accuracy and installation accuracy, therefore reduced the error of rolled parts cross sectional thickness, having improved the dimensional accuracy of rolled parts, is a kind of high-precision milling train.
Present embodiment screwdown gear 20 is two screwdown gear 20A, 20B, be separately positioned between frame top board 13 and the topping roll seat 50, axis direction along top working roll 31 is arranged, and is pressed together on the topping roll seat 50, is used to the adjustment that roll-force is provided and realizes roll gap between upper and lower working roll.Screwdown gear 20 comprises presses lever 21 and the ball ring 22 that is fixed on the topping roll seat 50, shown in Fig. 9 a and 9b, can be provided with hydraulic cylinder or electronic pressue device on the presses lever 21; Presses lever 21 also can adopt depress spiro rod, and depress spiro rod passes the top board 13 of frame 10, and is screwed onto on the top board 13; Presses lever 21 can also both adopt depress spiro rod to be spirally connected and pass on top board 13, adopted again hydraulic cylinder to be set thereon or electronic pressue device is finely tuned.By the length of adjusting screwdown gear 20 topping roll seat 50 is moved up and down to adjust roll gap in the window of frame 10.Screwdown gear 20 is two 20A, 20B in the present embodiment, arranges along the axis direction of top working roll 31, be symmetricly set on to be positioned on the topping roll seat 50, and and the tight pressing of topping roll seat 50 employings breading cap mode.The just common used ball ring of breading cap.When rolled parts during by the roll gap between the upper and lower working roll, working roll is applied roll-force, roll-force passes to by the back lining bearing that contacts with its rolling through working roll and supports the roll shaft core, supports the roll shaft core roll-force is passed to upper and lower roller base respectively by the affixed brace summer of itself and roller base respectively.The suffered roll-force of topping roll seat acts on the frame top board by screwdown gear 20 at last.The frame top board can produce drag simultaneously, and this drag acts on the rolled parts by screwdown gear 20, topping roll seat, upper support roller and top working roll again, and realization is rolling to rolled parts.Fig. 6 is the stressed schematic diagram of topping roll seat, as shown in Figure 6, in the transmittance process of the rolling power, the brace summer of upper support roller 32 by topping roll seat 50 roller base 50 that makes progress applies active force f upwards, upper support roller 32 acts among the active force f that topping roll seat 50 makes progress, have two force position S0, S0 ' farthest, the distance between these two force position S0, S0 ' farthest is SL0; Screwdown gear 20 simultaneously upwards roller base 50 apply downward directed force F, act on two screwdown gear 20A, the 20B in the downward directed force F of topping roll seat 50, there are two immediate force position S1, S1 ', concerning screwdown gear 20A, 20B, the power maximum that is subjected in the operation of rolling of S1, S1 ' point, the distance between these two immediate force position S1, the S1 ' is SL1.In the present embodiment technical scheme two screwdown gear 20A, 20B are symmetricly set on topping roll seat 50 and make on the position of SL1＜SL0.This moment is because S1, S1 ' on screwdown gear 20A, the 20B put stressed maximum, can think roughly that S1, S1 ' are the main stress point of screwdown gear, as long as this main stress point S1, S1 ' are positioned at the topping roll seat farthest within two stress point S0, the S0 ', just can make roller base beyond S1, S1 ' point, produce the stressing conditions of cantilever beam, so just can reduce the thickness difference of rolled parts, reduce deflection degree.
On the basis of technique scheme, screwdown gear 20A, 20B can also be carried out many row's settings at the end face of topping roll seat 50,20A, 20B are positioned at the axis outermost, as shown in figure 11.Between this external screwdown gear 20A, 20B, the one or more screwdown gear that can also arrange along the axis direction of top working roll 31, two above-mentioned screwdown gear 20A, 20B are outermost two screwdown gears, its situation remains these outermost two screwdown gear 20A, 20B and is symmetricly set on topping roll seat 50 and makes on the position of SL1＜SL0, as shown in figure 12.Equally, the above-mentioned a plurality of screwdown gears that have been provided with are carried out many row's settings at the end face of topping roll seat 50,20A, 20B still are positioned at the axis outermost.
The version of the topping roll seat that adopts in conjunction with Fig. 3, technical scheme shown in Figure 4, the active force that top roll system acts on the topping roll seat is that upper support roller 32 acts on the active force on the topping roll seat 50, and two affixed outermost contact points of brace summer that force position S0, S0 ' farthest is 32 cores of upper support roller 321 and topping roll seat 50.Screwdown gear 20 acts on that two immediate force position S1, S1 ' are the most inboard contact points that two screwdown gear 20A, 20B contact with topping roll seat 50 on the topping roll seat 50.Therefore the position of screwdown gear 20 in the present embodiment technical scheme is two screwdown gear 20A, 20B to be acted on topping roll seat 50 at a distance of two nearest force positions the topping roll seat is set and acts on topping roll seat 50 in two force positions farthest.
As shown in Figure 5, be vertically installed with horizontal support device 80A, the 80B that is used to reduce topping roll seat horizontal direction deflection degree between the lateral surface of the second topping roll seat of topping roll seat 50 and backboard 12, the panel 11 respectively.Horizontal support device can be hydraulic cylinder, electronic pressue device or cushion block.Present embodiment is an example with the cushion block, sets forth it position is set.Horizontal support device can be for one or more.Fig. 7 respectively is provided with a horizontal support device B-B sectional view respectively for the two side.As shown in Figure 7, be positioned at topping roll seat 50 on the sidewall of panel and backboard horizontal support device 80A, 80B are set between two parties, be used to bear horizontal roll-force and reduce the horizontal deflection degree.In the transmittance process of roll-force, the brace summer of upper support roller 30 in the top roll system by topping roll seat 50 roller base 50 that makes progress applies the active force p of level, upper support roller 30 acts among the horizontal applied force p of topping roll seat 50, have two active force C0, C0 ' farthest, the distance between these two force position C0, C0 ' farthest is CL0; Horizontal support device 80A or 80B simultaneously upwards roller base 50 apply active force P, because what adopt is that single horizontal support device 80A or 80B support, it acts among the active force P of topping roll seat 50, have two force position C1, C1 ' farthest, these two farthest the distance of force position C1, C1 ' be CL1; And make CL0＜CL1, can produce the stressing conditions of cantilever beam this moment, the horizontal deflection degree that reduced the topping roll seat.
Being symmetrical arranged on the sidewall of horizontal support device 80 at topping roll seat 50 is two, the force analysis of this moment is similar to the situation of two screwdown gears among Fig. 6, so, as long as two horizontal support device on this sidewall act on the topping roll seat 50 distance at a distance of two nearest force positions acts in the horizontal applied force on the topping roll seat 50 two force positions farthest less than upper support roller 30 distance, just can make the stressing conditions that produces cantilever beam on the topping roll seat 50, just reduce the horizontal deflection distortion of topping roll seat 50, improved the precision of rolled parts.Equally, as the analysis of front to screwdown gear, horizontal support device can also be carried out many rows in the mode of these two horizontal support device and is provided with, and has improved the precision of rolled parts equally.
In such scheme, also can between two horizontal support device on 50 1 sidewalls of topping roll seat, one or more horizontal support device be set again as required, can reach the effect that improves precision equally.In like manner, also can on sidewall above-mentioned a plurality of horizontal support device be carried out many rows is provided with.
In the present embodiment, the cushion block shape can also be that two wedge shape parts shown in Figure 5 are formed except common cushion block as shown in Figure 7, and the inclined plane of two wedge shape parts fits tightly relatively; Be arranged to move support in vertical direction applying and opposite direction relative to two inclined planes that fit tightly according to the size of rolling active force.Certainly, above-mentioned wedge shape part can also be fitted according to horizontal direction, that is to say to be arranged to relative to two inclined planes that fit tightly to fit in the horizontal direction and move support in the other direction according to the size of rolling active force.Adopting the wedge shape part mainly is the slit of being convenient to adjust horizontal direction, need not be as before, and the cushion block that prepare different-thickness carries out the adjustment of position, changes trouble, adopts the wedge shape part, does not need to change the adjustment that just can satisfy different slits.
Figure 13, Figure 14 are the force analysis figure of upper and lower roller base.Topping roll seat 50 of the present invention is the multi-point support girder construction, be arranged between screwdown gear 20 and the upper support roller 32, the multi-point support beam is connected with upper support roller 32, each brace summer all bears active force f1 and f2 upwards, two screwdown gears 20 are pressed together on the topping roll seat 50, and upwards roller base 50 applies downward directed force F.As shown in figure 13, when the most inboard contact point S1 that screwdown gear 20 contacts with topping roll seat 50 is positioned at outside the outer rim S0 of outermost brace summer of topping roll seat multi-point support beam, active force f1 and f2 upwards all is positioned at downward effect F, the bending moment that all active forces produced all will make the middle part of topping roll seat 50 produce flexural deformation upwards, obviously the distortion of topping roll seat 50 is bigger at this moment, and the distortion of topping roll seat 50 will further cause upper support roller 32 and top working roll 31 flexural deformations aggravation.As shown in figure 14, when the most inboard contact point that contacts with topping roll seat 50 when screwdown gear 20 is positioned at the outer rim of outermost brace summer of topping roll seat multi-point support beam, as analyzing reference point, name a person for a particular job the active force that makes progress that topping roll seat 50 is subjected to of the directed force F of screwdown gear 20 is divided into and is positioned at the inboard active force f1 of directed force F point and is positioned at active force f2 two parts outside the directed force F point with the directed force F point of screwdown gear 20.Wherein, active force f1 has the middle part that makes topping roll seat 50 to produce the bending moment that is bent upwards distortion, active force f2 then makes the two ends of topping roll seat 50 produce the bending moment that is bent upwards distortion, promptly the direction of two bending moments is opposite, that is to say that the bending moment relativity power f1 that active force f2 produces is a countertorque, will reduce the flexural deformation at topping roll seat 50 middle parts.Solid line shown in Figure 14 is the practical distortion of topping roll seat 50, and dotted line is the distortion of scheme shown in Figure 13.Obviously, when screwdown gear 20 was positioned at the outermost brace summer of topping roll seat multi-point support beam, the exercising result of all active forces reduced the flexural deformation of topping roll seat 50.From technique scheme as can be seen, the screwdown gear 20 that the present invention will be pressed together on the topping roll seat 50 is arranged in the outermost brace summer of topping roll seat multi-point support beam, the flexural deformation of topping roll seat 50 obviously reduces, the topping roll seat 50 that flexural deformation is less and then reduced upper support roller 32 and top working roll 31 flexural deformations finally makes rolled parts obtain less lateral thickness difference.
Fig. 8 is a stand stretch schematic diagram of the present invention, and Fig. 9 a, Fig. 9 b are screwdown gear and topping roll seat pressing schematic diagram, and wherein Fig. 9 a is the pressing schematic diagram of normal condition, and Fig. 9 b is the pressing schematic diagram of stand stretch situation.Adopt breading cap to be connected the ball ring mode that breading cap is just usually said in the present embodiment between screwdown gear 20 and the topping roll seat 50.Presses lever 21 on the screwdown gear 20 contacts support with ball ring 22 on being installed in topping roll seat 50 in the sphere mode, wherein frame top board 13 is withstood in the upper end of presses lever 21, the lower end is a curved end 211, the lower surface of ball ring 22 and topping roll seat 50 are affixed, upper surface is a concave surface 221, curved end 211 and concave surface 221 tight pressings, and curved end 211 can be on concave surface 221 move left and right.During work, roll-force passes to frame 10 through top working roll 31, upper support roller 32, topping roll seat 50 and screwdown gear 20, and top board 13 deforms under huge roll-force effect.The resistance to deformation power of top board 13 generations simultaneously acts on the rolled parts by topping roll seat 20, upper support roller 32 and top working roll 31.Top board 13 distortion cause its middle part to raise up, and top board 13 surface tilt will make presses lever 21 deflections.Because the curved end 211 of presses lever 21 lower ends can move on the concave surface 221 of ball ring 22, institute so that 21 inclinations of whole presses lever be supported between frame top board 13 and the topping roll seat 50, as shown in Figure 8.At this moment, the directed force F that 20 pairs of topping roll seats 50 of screwdown gear apply can be decomposed into horizontal direction component Fx and vertical direction component Fy, the horizontal direction component Fx equal and opposite in direction of two screwdown gears 20, direction is opposite, making a concerted effort of horizontal direction is zero, on the topping roll seat 50 that the vertical direction component Fy of two screwdown gears 20 then vertically acts on, the active force that imposes on the topping roll seat 50 with upper support roller 32 equates.So no matter how frame top board 13 is out of shape, screwdown gear 20 applies vertically downward active force to topping roll seat 50 all the time, the distortion of opposing topping roll seat 50, the deflection of topping roll seat 50, upper support roller 32 and even top working roll 31 and the deflection of frame top board 13 are had nothing to do, that is to say that the bending of work roll distortion is not subjected to the influence of roll-force fluctuation.
As can be seen from the above analysis, the distortion of frame top board 13 can not cause the active force of 20 pairs of topping roll seats 50 of screwdown gear to change, even when the distortion of frame top board 13 causes distance between frame top board 13 and the topping roll seat 50 to increase more greatly, also only can cause moving on the rigidity of topping roll seat 50, upper support roller 32 and even top working roll 31.In actual production, the automatic control of rolled parts thickness can be accomplished very high control accuracy, so the influence that moves on the rigidity of top working roll of the present invention 31 rolled parts thickness can be eased by control technology.Particularly, the presses lever 21 of screwdown gear 20 can adopt hydraulic cylinder or electronic pressue device or depress spiro rod device, when the deflection of presses lever 21 can not compensate variable in distance between frame top board 13 and the topping roll seat 50, high-precision automaton is regulated the length of presses lever 21 by correctly detecting the roll gap width, topping roll seat 50 is moved up and down in the window of frame 10 to adjust roll gap, thereby eliminated the distortion of working roll to greatest extent, guarantee that rolled parts has high-precision transverse gage, produces high-precision product.
Figure 11 is the situation that a plurality of many rows are provided with for screwdown gear.Figure 12 is the situation of a plurality of settings of a row for screwdown gear.
Equipment in the present embodiment frame also can be inverted use, and promptly upper and lower system is inverted and uses.
Embodiment 2
Present embodiment is on the basis of embodiment 1, has increased some optional features, further improves the precision of rolled parts.
In the present embodiment, lower roller base 60 also adopts the branch body structure as the topping roll seat is identical among the embodiment 1.Lower roller base is for vertically to divide two stacked first lower roller base of establishing and second lower roller bases, described first lower roller base to be positioned at the below of described second lower roller base, and described second lower roller base is to be connected with described lower roll.Be provided with horizontal cushion block between first lower roller base and described second lower roller base; Second lower roller base is the separated roller seat of left and right symmetry on axial cross section; Second lower roller base on the axial cross section is being separated roller seat more than 2.Like this, a big roller base is resolved into several little structures, be convenient to processing, because for too big too heavy object, opening the hole thereon is to be difficult to guarantee precision, will open a plurality of through holes thereon still more, also to guarantee the required precisions such as the depth of parallelism between each through hole simultaneously, with regard to more difficult reaching, the present invention decomposes it, each through hole of processing in each split, afterwards, in its assembling, the middle pad that adds is adjusted the indexs such as the depth of parallelism in each hole during again by each split part assembling, like this, machining accuracy and installation accuracy have just been improved, therefore having reduced the error of rolled parts cross sectional thickness, improved the dimensional accuracy of rolled parts, is a kind of high-precision milling train.
Also be horizontally disposed with between lower roller base 60 and the framework soleplate 14 and be useful on the vertical support device 70 that supports vertical rolling active force, vertical support device 70 can be the cushion block of different size specification, thickness forms series, realize the adjustment of roll line by the cushion block of different size thickness, vertical support device 70 also can adopt hydraulic means or electronic pressue device.Vertical support device 70 can be for one or more.
Figure 10 is the stressed schematic diagram of lower roller base when a vertical support device is set, and as shown in figure 10, a vertical support device 70 is set between two parties between lower roller base 60 and base plate 14.In the transmittance process of the rolling power, lower support roller 42 applies downward active force f by the brace summer of lower roller base 60 to lower roller base 60, lower support roller 42 acts among the downward active force f of lower roller base 60, have two force position X0 farthest, the distance between these two force position X0 farthest is XL0; Vertical support device 70 applies directed force F upwards to lower roller base 60 simultaneously, and vertical support device 70 acts in the directed force F that lower roller base 60 makes progress, and has two force position X1 farthest, and the distance between these two force position X1 farthest is XL1.Vertical support device 70 is arranged on the position that lower roller base 60 makes XL1＜XL0.That is to say that this vertical support device 70 acts on lower roller base and acts on lower roller base at a distance of the distance between two force positions farthest at a distance of the distance between two force positions farthest less than bottom roll system.
When vertical support device 70 is two that arrange along the axis direction of bottom working roll 41, and when being symmetricly set on the below of lower roller base 60, the situation of its force analysis two screwdown gears as shown in Figure 6, two vertical support devices act on lower roller base and act on lower roller base at a distance of the distance between two force positions farthest at a distance of the distance between two nearest force positions less than bottom roll system at this moment, so still can make the stressing conditions that produces cantilever beam on the lower roller base 60, reduce the vertical deflection deformation of lower roller base 60, improved the precision of rolled parts.Equally, as the analysis of front to screwdown gear, the vertical support device can also carry out many rows in the mode of these two horizontal support device and be provided with, and has improved the precision of rolled parts equally.
In such scheme, also can between above-mentioned two the vertical support devices below the lower roller base 60, one or more vertical support device be set again as required, can reach the effect that improves precision equally.In like manner, also above-mentioned a plurality of horizontal support device can be carried out many rows is provided with.
In the present embodiment, the vertical support device also can adopt the cushion block of being made up of two wedge shape parts, and the inclined plane of two wedge shape parts fits tightly relatively; Be arranged to move support in vertical direction applying and opposite direction relative to two inclined planes that fit tightly according to the size of rolling active force.Certainly, above-mentioned wedge shape part can also be fitted according to horizontal direction, that is to say to be arranged to relative to two inclined planes that fit tightly to fit in the horizontal direction and move support in the other direction according to the size of rolling active force.Adopting the wedge shape part mainly is the slit of being convenient to adjust horizontal direction, need not be as before, and the cushion block that prepare different-thickness carries out the adjustment of position, changes trouble, adopts the wedge shape part, does not need to change the adjustment that just can satisfy different slits.
Equally, can also respectively be symmetrical arranged two horizontal support device at two sidewalls of lower roller base 60, two horizontal support device of this on each sidewall act on lower roller base and act on lower roller base at a distance of the distance between two force positions farthest at a distance of the distance between two nearest force positions less than bottom roll system.Horizontal support device can also be two above-mentioned horizontal support device to be carried out many rows be provided with.
Equally, also can between two above-mentioned horizontal support device, one or more horizontal support device be set as required again, can reach the effect that improves precision equally.In like manner, also above-mentioned a plurality of horizontal support device can carried out many row's settings.
In the present embodiment, above-mentioned horizontal support device can adopt hydraulic cylinder, electronic pressue device or cushion block.The cushion block that cushion block can also be made up of two wedge shape parts, the inclined plane of two wedge shape parts fits tightly relatively; Be arranged to move support in vertical direction applying and opposite direction relative to two inclined planes that fit tightly according to the size of rolling active force.Certainly, above-mentioned wedge shape part can also be fitted according to horizontal direction, that is to say to be arranged to relative to two inclined planes that fit tightly to fit in the horizontal direction and move support in the other direction according to the size of rolling active force.Adopting the wedge shape part mainly is the slit of being convenient to adjust horizontal direction, need not be as before, and the cushion block that prepare different-thickness carries out the adjustment of position, changes trouble, adopts the wedge shape part, does not need to change the adjustment that just can satisfy different slits.
The resultant effect of technique scheme of the present invention reduces the flexural deformation of the vertical direction of upper and lower roller base on the one hand, reduce simultaneously the flexural deformation of the horizontal direction of upper and lower roller base again, and then reduce the distortion of upper and lower backing roll and upper and lower bending of work roll, on the other hand the flexural deformation of frame is converted to the rigid displacement of upper and lower roller base and even upper and lower working roll, upper and lower bending of work roll distortion is not fluctuateed with the variation of roll-force.Huge roll-force when aforesaid buckling of frame distortion is worked from milling train, specifically, in the transmittance process of roll-force, frame, roller base, backing roll and working roll all can produce corresponding distortion, and the distortion of its mid frame is undoubtedly maximum.Stand stretch causes the distortion aggravation of roller base, backing roll and working roll on the one hand, on the other hand because the deformation extent of frame depends on roll-force, roll-force is big more, the deformation extent of frame is big more, then make the deformation extent of roller base, backing roll and working roll relevant with roll-force, i.e. bending of work roll distortion is fluctuateed along with the variation of roll-force.In order to solve above-mentioned distortion, prior art generally becomes very big with the rigid design of frame, but the distortion of frame can only reduce, and can not eliminate fully.
The present invention has broken through the tactic pattern of traditional milling train, proposed to be provided with screwdown gear with vertical, horizontal support device is respectively with last, the lower roller base pressing, and to screwdown gear 20, horizontal support device 80, the technical scheme that the position of vertical support device 70 limits as described above, reduce the flexural deformation of the vertical direction of roller base on the one hand by the position of screwdown gear and vertical support device, reduce the flexural deformation of the horizontal direction of roller base by the position of screwdown gear and horizontal support device, and then reduce bending of work roll and be out of shape, pressing structure by screwdown gear and topping roll seat 50 breading cap modes converts the distortion of frame the rigid displacement of roller base and even working roll on the other hand, and the bending of work roll distortion is not fluctuateed with the variation of roll-force.
Embodiment 3
Figure 15 is the structural representation of third embodiment of the invention, and Figure 16 is the lateral sectional view of Figure 15.As Figure 15, shown in Figure 16, present embodiment structurally is that with the difference of first embodiment screwdown gear 20 adopts depress spiro rods, and depress spiro rod passes frame top board 13, and is screwed onto on the frame top board 13.Another difference is in the quantity of vertical support device 70 identical with screwdown gear 20 with the position among the figure.
Compared with prior art, the present invention has the following advantages:
Screwdown gear of the present invention is positioned at the outermost brace summer of topping roll seat 50 multi-point support beams, and position limiting mode as the aforementioned, has reduced the level of roller base, vertical deflection deformation, and then reduces backing roll and bending of work roll distortion; Simultaneously, screwdown gear and topping roll seat are by the pressing of breading cap mode, no matter how the frame top board is out of shape, screwdown gear applies vertically downward active force to topping roll seat 50 all the time, make the deflection of topping roll seat and even top working roll not be subjected to the influence of roll-force fluctuation, thereby guaranteed the shape of working roll bus, the lateral thickness difference of strip material is significantly reduced.
The present invention can make the design of original roller type obtain simplifying, and the control of rolling middle roll shape is also greatly simplified.Because the bending of work roll distortion is not fluctuateed with the fluctuation of roll-force basically, all influence factors in the original roller type design such as flexural deformation, flattening deformation, thermal expansion and wearing and tearing of roll or the like, just can not consider this most important factor of flexural deformation, and thermal expansion and wearing and tearing are to change factor slowly, and roll shape control is greatly simplified.
Volume of the present invention is little, and is in light weight, cost is low, can reduce the Workshop Production area thus, reduce factory building height, reduces the span and the tonnage of overhead traveling crane, reduces the tonnage of grinding machine and auxiliary equipment thereof, thereby reduces investment.
The present invention is not only limited to six rollers, the twelve high mill of the foregoing description, and is suitable too to the milling train of other multiple roll configurations.In addition, frame of the present invention is not limited to whole machine frame rolling mill, is suitable for too for the open-type frame.The present invention also can be turned upside down the equipment in the frame, still can realize improving the effect of the precision of rolled parts.
It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not break away from the spirit and scope of technical solution of the present invention.
Claims (21)
1, a kind of Bidimensional decomposition rolling mill, comprise frame, the frame content is equipped with topping roll seat and lower roller base, described upper and lower roller base connects top roll system and the lower roll system that is positioned to pyramidal structure respectively in multi-point support beam mode, it is characterized in that, described frame is to surround the framework integral body that constitutes by panel, backboard, top board and base plate, and backboard and panel surface offer charging aperture and the discharging opening for the rolled parts turnover respectively; Be arranged with two screwdown gears between the top board of described frame and the described topping roll seat, described screwdown gear is that axis direction is arranged and is pressed on the described topping roll seat by the breading cap mode along described top roll, and what two screwdown gears acted on described topping roll seat acts on described topping roll seat at a distance of the distance between two force positions farthest at a distance of the distance between two nearest force positions less than described topping roll system; Described topping roll seat is for vertically to divide the two stacked first topping roll seat of establishing and the second topping roll seats, the described first topping roll seat to be connected with described screwdown gear, and the described second topping roll seat is to be connected with described top roll.
2, Bidimensional decomposition rolling mill as claimed in claim 1 is characterized in that, is provided with horizontal cushion block between described first topping roll seat and the described second topping roll seat.
3, Bidimensional decomposition rolling mill as claimed in claim 1 is characterized in that, the described second topping roll seat is the separated roller seat of left and right symmetry on axial cross section.
4, Bidimensional decomposition rolling mill as claimed in claim 1 is characterized in that, the described second topping roll seat on the axial cross section is being separated roller seat more than 2.
5, Bidimensional decomposition rolling mill as claimed in claim 1 is characterized in that, is vertically installed with the horizontal support device that is used to reduce topping roll seat horizontal direction deflection degree between the lateral surface of the described second topping roll seat and described backboard, the panel respectively.
6, Bidimensional decomposition rolling mill as claimed in claim 5 is characterized in that, described horizontal support device is one or two.
7, Bidimensional decomposition rolling mill as claimed in claim 6, it is characterized in that, a described horizontal support device is arranged on the sidewall that described topping roll seat is positioned at the backboard of described frame or panel between two parties, and a described horizontal support device acts on described topping roll seat and acts on described topping roll seat less than described topping roll seat at a distance of the distance between two force positions farthest at a distance of the distance between two force positions farthest.
8, Bidimensional decomposition rolling mill as claimed in claim 6, it is characterized in that, described two horizontal support device are symmetricly set on described topping roll seat and are positioned on the sidewall of the backboard of described frame and panel, and two horizontal support device act on described topping roll seat and act on described topping roll seat less than described topping roll seat at a distance of the distance between two force positions farthest at a distance of the distance between two nearest force positions.
As claim 5,6,7 or 8 described Bidimensional decomposition rolling mills, it is characterized in that 9, described horizontal support device is a cushion block; Described cushion block is to be made up of two wedge shape parts, and the inclined plane of described two wedge shape parts fits tightly relatively.
10, Bidimensional decomposition rolling mill as claimed in claim 1 is characterized in that, between described lower roller base and the described base plate also level be provided with the vertical support device that is used to support vertical rolling active force.
11, Bidimensional decomposition rolling mill as claimed in claim 10 is characterized in that, described vertical support device is one or two.
12, Bidimensional decomposition rolling mill as claimed in claim 11, it is characterized in that, a described vertical support device is arranged on the below of described lower roller base between two parties, and it is to act on described lower roller base at a distance of the distance between two force positions farthest at a distance of the distance between two force positions farthest less than described bottom roll that described vertical support device acts on described lower roller base.
13, Bidimensional decomposition rolling mill as claimed in claim 11, it is characterized in that, described two vertical support devices are symmetricly set on the below of described lower roller base, and it is to act on described lower roller base at a distance of the distance between two force positions farthest at a distance of the distance between two nearest force positions less than described bottom roll that described two vertical support devices act on described lower roller base.
14, Bidimensional decomposition rolling mill as claimed in claim 1, it is characterized in that, described lower roller base is for vertically dividing two stacked first lower roller base of establishing and second lower roller bases, described first lower roller base is positioned at the below of described second lower roller base, and described second lower roller base is to be connected with described lower roll.
15, Bidimensional decomposition rolling mill as claimed in claim 14 is characterized in that, is provided with horizontal cushion block between described first lower roller base and described second lower roller base.
16, Bidimensional decomposition rolling mill as claimed in claim 14 is characterized in that, described second lower roller base is the separated roller seat of left and right symmetry on axial cross section.
17, Bidimensional decomposition rolling mill as claimed in claim 14 is characterized in that, described second lower roller base on the axial cross section is being separated roller seat more than 2.
18, Bidimensional decomposition rolling mill as claimed in claim 14 is characterized in that, is vertically installed with the horizontal support device that is used to reduce lower roller base horizontal direction deflection degree respectively between the lateral surface of described second lower roller base and described backboard, the panel.
19, Bidimensional decomposition rolling mill Bidimensional decomposition rolling mill as claimed in claim 18 is characterized in that, described horizontal support device is one or two.
20, Bidimensional decomposition rolling mill as claimed in claim 19, it is characterized in that, a described horizontal support device is arranged on the below of described lower roller base between two parties, and it is to act on described lower roller base at a distance of the distance between two force positions farthest at a distance of the distance between two force positions farthest less than described bottom roll that a described horizontal support device acts on described lower roller base.
21, Bidimensional decomposition rolling mill as claimed in claim 19, it is characterized in that, described two horizontal support device are symmetricly set on the below of described lower roller base, and it is to act on described lower roller base at a distance of the distance between two force positions farthest at a distance of the distance between two nearest force positions less than described bottom roll that described two horizontal support device act on described lower roller base.
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| CN 200610128349 CN100998993A (en) | 2006-12-07 | 2006-12-07 | Bidimensional decomposition rolling mill |
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| CN 200610128349 CN100998993A (en) | 2006-12-07 | 2006-12-07 | Bidimensional decomposition rolling mill |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102430754A (en) * | 2010-09-29 | 2012-05-02 | 山东莱芜金石集团有限公司 | Vertical rolling mill |
| CN102744253A (en) * | 2012-02-05 | 2012-10-24 | 吉林大学 | Board rolling device |
| CN102764767A (en) * | 2012-08-21 | 2012-11-07 | 中冶赛迪工程技术股份有限公司 | Roller bearing block structure for rolling mill |
| CN109604339A (en) * | 2018-08-13 | 2019-04-12 | 襄阳博亚精工机器有限公司 | A kind of roller box |
| CN113814276A (en) * | 2021-11-24 | 2021-12-21 | 太原科技大学 | Plate shape regulating and controlling method based on tension-temperature control |
-
2006
- 2006-12-07 CN CN 200610128349 patent/CN100998993A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102430754A (en) * | 2010-09-29 | 2012-05-02 | 山东莱芜金石集团有限公司 | Vertical rolling mill |
| CN102744253A (en) * | 2012-02-05 | 2012-10-24 | 吉林大学 | Board rolling device |
| CN102764767A (en) * | 2012-08-21 | 2012-11-07 | 中冶赛迪工程技术股份有限公司 | Roller bearing block structure for rolling mill |
| CN109604339A (en) * | 2018-08-13 | 2019-04-12 | 襄阳博亚精工机器有限公司 | A kind of roller box |
| CN109604339B (en) * | 2018-08-13 | 2023-09-01 | 襄阳博亚精工机器有限公司 | Roller box |
| CN113814276A (en) * | 2021-11-24 | 2021-12-21 | 太原科技大学 | Plate shape regulating and controlling method based on tension-temperature control |
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