CN108500083A - The more stock board product roll leveller processing parameter setting methods of small lot - Google Patents
The more stock board product roll leveller processing parameter setting methods of small lot Download PDFInfo
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- CN108500083A CN108500083A CN201810196653.XA CN201810196653A CN108500083A CN 108500083 A CN108500083 A CN 108500083A CN 201810196653 A CN201810196653 A CN 201810196653A CN 108500083 A CN108500083 A CN 108500083A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers
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Abstract
The more stock board product roll leveller processing parameter setting methods of small lot belong to plank aligning field.It is characterized in：1 determines plank temperature difference range, and material yield strength and elasticity modulus at this temperature are determined every definite value；2 determine that plate thickness is poor, i.e. standard thickness and maximum, minimum thickness value；3 structure straightening process describe space, including S2, SN‑1, B1, BN, traverse desirable process combination all in space；4 ought provide one group of S2, SN‑1, B1, BN, according to straightening equipment structure, the positional value of N number of straightening roll can determine.5 calculate remnant curvature according to related roll straightening continuous bend algorithm to the plank of certain material and size；6 pinpoint in a certain S different temperatures range fixed-point value, thickness range2、SN‑1、B1、BN, obtain different remnant curvature C；7 determine maximum C in different remnant curvature C, for remnant curvature C under the straightening processR；8 replace straightening process, arrive new CR, in all CRIn be minimized, be optimal remnant curvature CF, CFCorresponding S2、SN‑1、B1、BNFor optimised process.
Description
Technical field
The invention belongs to plank straightening technology fields, and in particular to a kind of more stock board product roll levellers of small lot
Processing parameter setting method.
Background technology
Currently, being especially in various specialty metal plank productions in sheet metal, the more specifications of small lot become plate product
Vital point in production.Small lot, changes in process parameters is larger in production process on rolling line for more stock board products,
There are temperature differences and thickness difference between single batch and individual plate product, keep roll leveller processing parameter setting difficult, to
Cause traditional general straightening process setting method that can not adapt to production requirement.
Invention content
The object of the present invention is to provide a kind of more stock board product roll leveller processing parameter setting methods of small lot,
For plate thickness error, temperature error existing for small lot plank, roll leveller technique initialization method is optimized, is met small quantities of
Measure the plank aligning production requirement of more specifications.
As shown in Figure 1, 2, 3, in roll leveller production, matter is aligned using the remnant curvature of plate product as to product
Amount and precision evaluation parameter, be for the setting technological parameter in the roll straightening equipment of N number of straightening roll, influencing remnant curvature on
Arrange the 1st roller drafts S2, the upper last 1 roller drafts S of rowN-1And front roller positional value B1With back roller positional value BN。
The present invention is implemented, it is characterised in that includes the following steps：
1) by the temperature for the temperature sensor measurement plank being arranged before straightener, model of the plank there are temperature difference is determined
It encloses, within the scope of temperature difference, a temperature samples value is taken every 10 degrees Celsius, material under different temperatures is determined according to sample value
Yield strength and elasticity modulus.
2) by the thickness for the thickness transducer sheet material measurement being arranged before straightener, model of the plank there are thickness difference is determined
It encloses, standard thickness value H, the thickness thickness value H+i and tri- values of thinnest part thickness value H-i of plank is taken within the scope of thickness difference.
3) build a straightening process space is described, the space include on arrange the 1st roller drafts S2, upper last 1 roller of row
Drafts SN-1, front roller positional value B1With back roller positional value BN, determine the range in space, the 1st roller drafts S arranged on2, take
The corresponding value of the elastic curvature value of ranging from 0~5 times of value；The upper last 1 roller drafts S of rowN-1, value range is 0~1.5 times of elasticity
Curvature value respective value, front roller positional value B1With back roller positional value BN, value range is according to mechanical design structure decision.Root
Precision is depressed according to straightener, four process values take a value every definite value 0.1mm, traverse desirable technique groups all in space
It closes.
S is calculated first2Range, wherein elastic curvature value calculation formula is：
In formula--- it is elastic limit curvature, σsFor yield strength, h is plate thickness；E is elasticity modulus,
Its top roller S can be calculated by following formula2Corresponding bending curvature maximum value is：
It is S for No. 2 roller drafts2When, the bending curvature of corresponding plank；
It is plank when not being bent that plank, which corresponds to bending curvature minimum value, and curvature 0 so far obtains S2Corresponding curvature
Value range, in the range according to formulaS can be obtained2Value range.
4) straightening process generator is designed, principle is as shown in figure 4, describe the boundary in space according to straightening process, one by one
Straightening process setting combination is generated, and be possible to straightening process combination in space can be traversed.When providing one group of straightening process,
On arrange the 1st roller drafts S2, the upper last 1 roller drafts S of rowN-1And front roller positional value B1With back roller positional value BN, upper roller system
Be placed in a roller system box, roller be tied to form straight line arrangement, admittedly can each straightening roll of the row of acquiring drafts, computational methods are such as
Under：For upper row's roller system, after the drafts of known No. 2 roller and N-1 rollers, according to formulaCalculate the drafts of other upper roller systems；The computational methods of the drafts of lower roll
For： Side roller adjustment is not considered, then S1=0, SN=0.
Consider the adjustment of side roller, S1'=B1SN'=BN.No. 2 roller calculates as follows with amount under N-1 roll-ins：
For the drafts of No. 2 roller：
After the roller adjustment of sideWherein S2′、S3' for the pressure of No. 2 roller and No. 3 roller after the roller position change of side
Lower amount, since No. 3 roller drafts is not influenced by side roller, i.e. S3=S3′
And because
Under the influence of the roller of sideSimilarly
5) after determining N number of straightening roll press quantity, according to related roll straightening continuous bend algorithm, to certain material and ruler
Very little plank calculates remnant curvature C, and circular is as follows, since known each roller corresponds to drafts Si, obtain each roller
Corresponding bending curvatureBending curvature is at No. i-th straightening roll： SiFor drafts at No. i-th straightening roll；
Original residual curvature at No. i-th straightening roll
In formula--- for original residual curvature at No. i-th straightening roll, each straightening roll can be obtained and correspond to the original residual of plank
Remaining curvature valueAnd N rollers are correspondingThe as final residual curvature of plank：
6) for three fixed-point values of different-thickness range under the different each fixed-point values of temperature range and same temperature,
In a certain S2、SN-1、B1、BNUnder technique, the remnant curvature C of different plate products is obtainedR。
7) in different remnant curvature CRIn, determine maximum CR, which is the remnant curvature C under the straightening processRF。
8) one group of new straightening process of setting repeats above step and obtains new remnant curvature CRF, in all different CRF
In be minimized, the minimum value be optimum process under remnant curvature CFValue.CFIt is worth corresponding S2、SN-1、B1、BNValue is
Best process value is as shown in Figure 5.
Advantages of the present invention and good effect are：
The characteristics of stock boards more for small lot on rolling line, due to rolling line production process technology Parameters variation compared with
There are temperature differences and thickness difference between single batch and individual plate product caused by big, and then influence roll leveller technological parameter
A kind of the problem of setting and straightening quality, it is proposed that more stock board product roll leveller processing parameter setting sides of small lot
Method, solve straightening process caused by temperature error and thickness error in more specification small lot plank straightening process calculate it is inaccurate
The problem of, the straightening quality of the precision and plank of straightening process setting is improved, residual stress after the aligning of plank is reduced.
Description of the drawings
Fig. 1 is roll leveller schematic diagram.
Fig. 2 is that straightening roll arranges schematic diagram in up-down rollers system.
Fig. 3 is forward and backward side roller positional value B in lower roll system1、BNSchematic diagram.
Fig. 4 is straightening process product process schematic diagram.
Fig. 5 is to solve optimum process and remnant curvature flow diagram.
In figure, A-upper roller system B-lower roll system
1-No. 1 roller, also 2-No. 2 rollers of front roller, also on arrange the 1st roller
3 one No. 3 rollers, 4 one No. 4 rollers
Mono- N-1 rollers of N-1 also above arrange last 1 roller N, mono- N rollers, also back roller
B1One front roller positional value BNOne back roller positional value.
Specific implementation mode
The present invention by length and width, it is thick be respectively 10 meters, 2 meters, for 0.3 meter of certain Q345 sheet metal, illustrate implementation process.
1. first by the temperature sensor being arranged before straightener, plank to be aligned is measured in entire plank not same district
The value in domain is 500 degree to 600 degree in present case.According to temperature range, mechanics (is passed through by query material performance database
Performance test obtains data), σ is then can be obtained into every 10 DEG C of difference assignment according to temperature in material yield strengthSAnd springform
Amount E see the table below.
2. by the depth information of thickness gauge sheet material measurement before straightener, range of the plank there are thickness difference is determined, measure
The plate thickness is 30.5mm to 29.5mm.The standard thickness value 30mm of plank, thickness thickness value are taken within the scope of thickness difference
Hmax=30.5mm, thinnest part thickness value Hmin=29.5mm, totally three are worth.
3. structure straightening process describes space, determines the range in space, the 1st roller drafts S is arranged on2, value range 0
~5 timesThe upper last 1 roller drafts S of rowN-1Value range be 0~1.5 timesFront roller positional value B1Value range -25
~+25mm and back roller BNValue range -25~+25mm is Machine Design value.Precision is depressed according to straightener, sets four
Process value can then traverse desirable process combination all in space every 0.1mm definite value values.S is calculated first2Range,
It is middle elasticity curvature value calculation formula be：
Its top roller S can be calculated by following formula2Corresponding bending curvature maximum value is 5 times of position
It is the case where plank is not bent that plank, which corresponds to bending curvature minimum value, and curvature 0 so far obtains S2It is corresponding bent
The value range of rateIn the range for the bending curvature arbitrarily determined, according to formulaIt calculates
S2Value rangeSimilarly, the drafts S of N-1 rollersN-1Value range is
4. by straightening process generator, provide one group of straightening process include on arrange the 1st roller drafts S2, upper last 1 roller of row
Drafts SN-1And front roller positional value B1With back roller BN, after the drafts of known No. 2 rollers and N-1 rollers, according to formulaCalculate the drafts of other upper roller systems, the calculating of the drafts of lower roll：S1=0, SN=0.
Consider the adjustment of side roller, S1'=B1SN'=BN, No. 2 rollers calculate as follows with amount under N-1 roll-ins：
For the drafts of No. 2 rollers：
S2′、S3' for the drafts after No. 2 rollers of side roller position change and No. 3 rollers
S3=S3′
For the drafts of N-1 rollers：
SN-2′、SN' for the drafts after side roller position change N-2 rollers and N rollers
SN-2=SN-2′
So far, the corresponding drafts of all rollers has been obtained.
5. after determining N number of straightening roll press quantity, remnant curvature can be calculated to the plank of certain material and size.
Bending curvature is at i straightening rolls:SiFor drafts at i straightening rolls, due to SiIt is known that calculating
It can obtain
Original residual curvature at i straightening rolls
The corresponding original curvature of each roller is obtained by above formula, and the corresponding original curvature of N rollers is the final residual of plank
Curvature value：
6. for three fixed-point values of different-thickness range under the different each fixed-point values of temperature range and same temperature,
In a certain S2、SN-1、B1、BNUnder technique, the remnant curvature C of different plate products is obtainedR。
7. in different remnant curvature CRIn, determine maximum CR, which is the remnant curvature C under the straightening processRF。
8. one group of new straightening process of setting repeats above step and new remnant curvature C can be obtainedRF, all different
CRFIn be minimized, the minimum value be optimum process under remnant curvature CFValue, CFIt is worth corresponding S2、SN-1、B1、BNValue is
For best process value.
Claims (1)
1. the more stock board product roll leveller processing parameter setting methods of small lot, it is characterized in that：1) it is being rectified by setting
The temperature of temperature sensor measurement plank before straight machine, determines range of the plank there are temperature difference, within the scope of temperature difference, every
10 degrees Celsius take a temperature samples value, and the yield strength and elasticity modulus of material under different temperatures are determined according to sample value；
2) by the thickness for the thickness transducer sheet material measurement being arranged before straightener, range of the plank there are thickness difference is determined,
The standard thickness value H of plank, thickness thickness value H+i and thinnest part thickness value H-i totally three values are taken within the scope of thickness difference；
3) build a straightening process space is described, the space include on arrange the 1st roller drafts S2, the upper last 1 roller drafts of row
SN-1, front roller positional value B1With back roller positional value BN, determine the range in space, the 1st roller drafts S arranged on2, value range
For the corresponding value of 0~5 times of elasticity curvature value, the upper last 1 roller drafts S of rowN-1, value range is 0~1.5 times of elastic curvature value
Respective value；Front roller positional value B1With back roller positional value BN, value range is determined according to mechanical design structure, according to aligning
Machine depresses precision, and four process values take a value every definite value 0.1mm, then can traverse desirable process combination all in space,
S is calculated first2Range, wherein elastic curvature value calculation formula is：
In formula--- it is elastic limit curvature；σsFor yield strength；H is plate thickness；E is elasticity modulus；
It can be calculated by following formula and arrange the 1st roller drafts S thereon2Corresponding bending curvature maximum value is：
It is S for No. 2 roller drafts2When, the bending curvature of corresponding plank；It is plank that plank, which corresponds to bending curvature minimum value,
When not being bent, curvature 0 so far obtains S2The value range of corresponding curvature, in the range according to formula
To S2Value range；
4) straightening process generator is designed, the boundary in space is described according to straightening process, generates straightening process setting combination one by one,
And be possible to straightening process combination in space can be traversed, when providing one group of straightening process, on arrange the 1st roller drafts S2, on
Arrange last 1 roller drafts SN-1And front roller positional value B1With back roller positional value BN, upper roller system is placed in a roller system box,
Roller is tied to form straight line arrangement, admittedly can each straightening roll of the row of acquiring drafts, computational methods are as follows：For upper row's roller system,
After the drafts of known No. 2 roller and N-1 rollers, according to formulaIt calculates
The drafts of other upper roller systems；The computational methods of the drafts of lower roll are：No
Consider the adjustment of side roller, then S1=0, SN=0；
Consider the adjustment of side roller, S1'=B1SN'=BN, No. 2 roller calculates as follows with amount under N-1 roll-ins：
For the drafts of No. 2 roller：
After the roller adjustment of sideWherein S2′、S3' for the drafts of No. 2 roller and No. 3 roller after the roller position change of side,
Since No. 3 roller drafts is not influenced by side roller, i.e. S3=S3′
And because
Under the influence of can obtaining side rollerIt can similarly obtain
After determining N number of straightening roll press quantity, according to related roll straightening continuous bend algorithm, to the plate of certain material and size
Material can calculate remnant curvature C, and circular is as follows, since known each roller corresponds to drafts Si, then can obtain each
The corresponding bending curvature of rollerBending curvature is at No. i-th straightening roll：SiTo be depressed at No. i-th straightening roll
Amount；
Original residual curvature at No. i-th straightening roll
In formula--- for original residual curvature at No. i-th straightening roll, the original residual song that each straightening roll corresponds to plank can be obtained
Rate valueAnd N rollers are correspondingThe as final residual curvature of plank：
6) for three fixed-point values of different-thickness range under the different each fixed-point values of temperature range and same temperature, at certain
One S2、SN-1、B1、BNUnder technique, the remnant curvature C of different plate products can be obtainedR；
7) in different remnant curvature CRIn, determine maximum CR, which is the remnant curvature C under the straightening processRF；
8) one group of new straightening process of setting repeats above step and new remnant curvature C can be obtainedRF, in all different CRFIn
It is minimized, the remnant curvature C under the optimum process which isFValue, CFIt is worth corresponding S2、SN-1、B1、BNValue is most
Good process value.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111487869A (en) * | 2020-04-24 | 2020-08-04 | 中冶赛迪工程技术股份有限公司 | Straightening control method and device |
| CN113680850A (en) * | 2021-09-24 | 2021-11-23 | 中冶赛迪工程技术股份有限公司 | Method for setting rolling reduction of straightener |
| CN113941620A (en) * | 2021-10-14 | 2022-01-18 | 中冶南方工程技术有限公司 | Pressing schedule setting method of parallel roll system integral adjustment type straightening machine |
| CN114602998A (en) * | 2022-03-01 | 2022-06-10 | 太原科技大学 | Side roller setting method of roller straightener based on side roller neural network and fuzzy technology |
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| CN106270001A (en) * | 2016-08-30 | 2017-01-04 | 中冶南方工程技术有限公司 | The acquisition methods of upper row's roller drafts of a kind of roll-type stretch bending-straightening machine and device |
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| CN101417297A (en) * | 2008-12-11 | 2009-04-29 | 太原科技大学 | Straightening scheme of metal plate-belt roll type combination straightening machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113680850A (en) * | 2021-09-24 | 2021-11-23 | 中冶赛迪工程技术股份有限公司 | Method for setting rolling reduction of straightener |
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| CN114602998A (en) * | 2022-03-01 | 2022-06-10 | 太原科技大学 | Side roller setting method of roller straightener based on side roller neural network and fuzzy technology |
| CN114602998B (en) * | 2022-03-01 | 2023-08-15 | 太原科技大学 | Edge roll setting method of roll straightener based on edge roll neural network and fuzzy technology |
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