CN101151111A - Automatic control method of roll type pipe correction machine - Google Patents
Automatic control method of roll type pipe correction machine Download PDFInfo
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- CN101151111A CN101151111A CNA2006800107290A CN200680010729A CN101151111A CN 101151111 A CN101151111 A CN 101151111A CN A2006800107290 A CNA2006800107290 A CN A2006800107290A CN 200680010729 A CN200680010729 A CN 200680010729A CN 101151111 A CN101151111 A CN 101151111A
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- 238000000034 method Methods 0.000 title claims abstract description 49
- 238000005096 rolling process Methods 0.000 claims description 105
- 238000003801 milling Methods 0.000 claims description 72
- 230000000694 effects Effects 0.000 abstract description 24
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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
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- B21D3/02—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers
- B21D3/04—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers arranged on axes skew to the path of the work
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Abstract
Automatic control method of a roll type pipe correction machine producing a stabilized correction effect. At the time of correcting a pipe by crushing it by means of a straightener equipped with three or more stands each having a pair of hole type rolls, automatic control of first through fourth steps is carried out. First step: the relation between a set value of the offset amount and the bending amount of a pipe measured on the exit side of the correction machine is calculated previously. Second step: the bending amount of the pipe is measured on the exit side of the correction machine. Third step: when the bending amount measured in the second step is out of a target range, a variation of the offset amount for limiting the bending amount of the pipe on the exit side of the correction machine within the target range is calculated according to the relation calculated in the first step. Fourth step: a set value of the offset amount at the time of correcting the next pipe is determined according to the variation of the offset amount calculated in the third step.
Description
Technical field
The present invention relates to be used to correct the autocontrol method of the roll type pipe correction machine of pipes such as steel pipe, particularly, relate to the autocontrol method of the roll type pipe correction machine that can obtain stable rectification effect.
Background technology
Implement various processing in order to obtain specified quality and carry out finishing by the pipe of various tubulation manufactured.Correction process is one of this finishing procedure, and its purpose is to eliminate the bending of the pipe that produces and makes that it is straight, and the profile of pipe is become positive circle from ellipse.
As shown in Figure 1, normally used roll type pipe correction machine (straightener) has and is provided with a pair of concave roll R that faces mutually, the milling train of R more than 3.Roll type pipe correction machine make the concave roll that is arranged on the #2 milling train to R, R with respect to be arranged on concave roll on #1,3 milling trains to R, R with regulation amount of bias (concave roll of #2 milling train to the concave roll of the pass center of R, R and #1,3 milling trains to the distance between the pass center of R, R) biasing, and R, R are come its rectification with the rolling quantity stipulated (the interval H between the trench bottom of the target outer diameter D of the pipe P of #1～3 milling train entrance sides and a pair of concave roll R, the R that faces mutually) rolled tube P with the concave roll that is arranged on #1～3 milling trains.In addition, be arranged on concave roll R on the #4 milling train and have function as guide roller.
The amount of bias of the concave roll of #2 milling train, rolling quantity are the key factors of the rectification effect of decision pipe P.Therefore, up to the present, about the setting of amount of bias and rolling quantity, various inventions are disclosed.
For example, following invention being disclosed in patent documentation 1: is determined at the load that produces on the concave roll that is arranged on each milling train, sets amount of bias and rolling quantity, so that this load becomes the appropriate value that has pre-determined.
In addition, following invention is disclosed in patent documentation 2: the wear extent of prediction concave roll, set amount of bias, rolling quantity etc. according to the wear extent that dopes.
Have, disclose following invention in patent documentation 3: the theoretical formula according to the deformation dynamics of pipe in correcting process is set amount of bias and rolling quantity.
Patent documentation 1: TOHKEMY 2001-179340 communique
Patent documentation 2: Japanese kokai publication hei 2-207921 communique
Patent documentation 3: the special fair 4-72619 communique of Japan
But invention disclosed finally also is based on the prediction that can obtain good pipe rectification effect and sets amount of bias and rolling quantity in the patent documentation 1～3, can not reflect that pipe is in the actual flexion amount at arbor press outlet side place, oval amount.Therefore,, can not stablize rectification effect, be difficult to amount of bow, oval amount are controlled in the target zone even adopt these inventions.
In fact, in patent documentation 1～3 invention disclosed, in order to reflect pipe in the amount of bow at the outlet side place of arbor press, oval amount, the operator is with the degree of crook of Visual Confirmation pipe, oval degree, based on operator's experience and intuition manually setting amount of bias, rolling quantity.Set amount of bias, rolling quantity owing to be based on operator's experience as described above and intuition with manual, so rectification effect is still unstable.
Summary of the invention
The present invention is the autocontrol method of roll type pipe correction machine, this roll type pipe correction machine has the milling train that is provided with a pair of concave roll of facing mutually more than 3, make the concave roll that is arranged at least 1 milling train to respect to being arranged on concave roll on other milling trains, and rolled tube is come its rectification with the concave roll that is arranged on each milling train to biasing.And, comprise the 1st step～the 4th step that the following describes.In addition, in this manual, " control automatically " is meant the control of using control device to carry out automatically.That is to say that the present invention uses 1st step～4th step of control device shown in automatically below the control.
In the 1st step, calculate the setting value of amount of bias and the relation of the amount of bow of the pipe that records at the place of outlet side at least of roll type pipe correction machine in advance.That is to say, for a plurality of pipes of having set various different amount of bias δ o respectively and having corrected, by measuring amount of bow r separately at the roll type pipe correction machine outlet side, thus calculate in advance both relation, be the function f of δ o=f (r).
In the 2nd step, measure the amount of bow of pipe at the place of outlet side at least of roll type pipe correction machine, that is, measure the amount of bow r1 of this pipe P that has corrected.
In the 3rd step, when the amount of bow r1 of the pipe that records in the 2nd step at roll type pipe correction machine outlet side place is in outside the target zone, based on the setting value of the amount of bias of in the 1st step, calculating, with the amount of bow of the pipe that records at the place of outlet side at least of roll type pipe correction machine concern δ o=f (r), calculate the change amount that makes the amount of bow of pipe be in needed amount of bias in the target zone at roll type pipe correction machine outlet side place.That is to say, if make the desired value (being in the arbitrary value in the target zone) of the amount of bow of pipe be r ', then obtain the setting value δ o that becomes the amount of bias of target in order to obtain this desired value r ' by δ o '=f (r) ', therefore, if making the setting value of the amount of bias of this pipe of having corrected is δ o1, then the change amount Δ δ o of Bi Yao amount of bias is calculated by Δ δ o=δ o '-δ o1.
In the 4th step,, determine to correct the setting value of the amount of bias in root pipe down P ' time based on the change amount Δ δ o of the amount of bias of in the 3rd step, calculating.That is to say, be δ o2 if make the setting value of the amount of bias of correcting root pipe down P ' time, and then δ o2 is determined by δ o2=δ o1+ Δ δ o.At this moment, in order to prevent to disperse, also can be multiplied by 0～1 mitigation coefficient to Δ δ o.
As described above, the autocontrol method of roll type pipe correction machine of the present invention is measured the amount of bow of pipe at arbor press outlet side place, and the amount of bias when change corrects the root pipe is so that this measured value is in the target zone of amount of bow.That is to say that the pipe that records of feedback changes amount of bias in the amount of bow at arbor press outlet side place.Therefore, can stably correct the bending of pipe.In addition, " amount of bow of pipe " is by length (mm/m) regulation at the determination object position of the side-play amount/pipe at tube section center.The amount of bow of pipe for example can be measured like this: be used for the external diameter meter of radially measuring external diameter of pipe a plurality of in roll type pipe correction machine outlet side configuration, calculate the position at tube section center in each measuring outside diameter position of directly upwards measuring based on this external diameter meter, calculate the variation of center to the length of tube direction.
Pipe is in the amount of bow of roll type pipe correction machine outlet side, and then is the change amount of necessary amount of bias, changes according to the amount of bow of pipe at the roll type pipe correction machine entrance side.That is to say, the amount of bow at roll type pipe correction machine entrance side place than the pipe of last time having corrected when the amount of bow of this entrance side is big, make amount of bias bigger than last time amount of bias; On the contrary, in the amount of bow at entrance side place than the pipe of last time having corrected in the amount of bow at this entrance side place hour, make amount of bias littler than last time amount of bias.Therefore, in order to obtain more stable rectification effect, preferably, measure the amount of bow of pipe at the roll type pipe correction machine entrance side, this amount of bow that feedovers changes amount of bias.
Therefore, in optimal way of the present invention, in the 1st step, calculate in advance amount of bias setting value, with the relation of the amount of bow of the pipe that records at roll type pipe correction machine entrance side and outlet side place.That is to say,,, calculate δ o=f (ri, function f ro) in advance by measuring amount of bow ri and ro respectively at roll type pipe correction machine entrance side and outlet side place for a plurality of pipes of having set various different amount of bias δ o respectively and having corrected.
In the 2nd step, the amount of bow ro1 of the pipe P that this that measure roll type pipe correction machine outlet side place corrected, and measure the amount of bow ri2 of the pipe P ' that then will correct at roll type pipe correction machine entrance side place.
In the 3rd step, when the amount of bow ro1 of the pipe P that has corrected when this of the roll type pipe correction machine outlet side place that records in the 2nd step is in outside the target zone, concern δ o=f (ri based on the amount of bow of the setting value of the amount of bow ri2 of the pipe that then will correct at the roll type pipe correction machine entrance side place that in the 2nd step, records and the amount of bias in the 1st step, calculated and the pipe of measuring at roll type pipe correction machine entrance side and outlet side place, ro), calculate the change amount that makes the amount of bow of pipe be in needed amount of bias in the target zone at roll type pipe correction machine outlet side place.That is to say, by δ o '=f (ri2, ro ') obtains in order to obtain pipe at the desired value ro ' of the amount of bow at roll type pipe correction machine outlet side place and become the setting value δ o ' of the amount of bias of target, therefore, if making the setting value of the amount of bias of this pipe of having corrected is δ o1, then the change amount Δ δ o of Bi Yao amount of bias is calculated by Δ δ o=δ o '-δ o1.
In addition, pipe is in the amount of bow at roll type pipe correction machine outlet side place, and then is the change amount of necessary amount of bias, changes according to the temperature of pipe at roll type pipe correction machine entrance side place.That is to say that pipe is when the temperature at roll type pipe correction machine entrance side place is higher than the temperature of the pipe of last time having corrected, because easy deformation, make amount of bias littler for this reason than last time amount of bias; Otherwise pipe and was last time compared the increasing amount of bias when the temperature at entrance side place is lower than the temperature of the pipe of last time having corrected.Therefore, in order to obtain more stable rectification effect, preferably, measure the temperature of pipe at roll type pipe correction machine entrance side place, the temperature that feedforward records also changes amount of bias.
Therefore, in optimal way of the present invention, in the 1st step, calculate the relation of the temperature of the setting value of amount of bias, the pipe that records with the amount of bow of the pipe that records at roll type pipe correction machine outlet side place and at the roll type pipe correction machine entrance side in advance.That is to say, for a plurality of pipes of setting various different amount of bias δ o respectively and having corrected, by amount of bow r that measures roll type pipe correction machine outlet side place and the temperature T of measuring roll type pipe correction machine entrance side place, concern δ o=f (r, function f T) thereby calculate these in advance.
In the 2nd step, the amount of bow r1 of the pipe P that this that measure roll type pipe correction machine outlet side place corrected, and measure the temperature T 2 of the pipe P ' that then will correct at roll type pipe correction machine entrance side place.
In the 3rd step, when the amount of bow r1 of the pipe P that has corrected when this of the roll type pipe correction machine outlet side place that records in the 2nd step is in outside the target zone, temperature T 2 based on the pipe P ' that then will correct at the roll type pipe correction machine entrance side place that in the 2nd step, records, and the temperature of the amount of bow of the setting value of the amount of bias of in the 1st step, calculating and the pipe that records at roll type pipe correction machine outlet side place and the pipe that records at roll type pipe correction machine entrance side place concern δ o=f (r, T), calculate the change amount that makes the amount of bow of pipe be in needed amount of bias in the target zone at roll type pipe correction machine outlet side place.That is to say, by δ o '=f (r ', T2) obtain in order to obtain pipe at the desired value r ' of the amount of bow of roll type pipe correction machine outlet side and become the setting value δ o ' of the amount of bias of target, therefore, if making the setting value of the amount of bias of this pipe of having corrected is δ o1, then the change amount Δ δ o of Bi Yao amount of bias calculates with Δ δ o=δ o '-δ o1.
Have again, the present invention is the autocontrol method of roll type pipe correction machine, this roll type pipe correction machine has the milling train that is provided with a pair of concave roll of facing mutually more than 3, make the concave roll that is arranged at least 1 milling train to respect to being arranged on concave roll on other milling trains to biasing, and with the concave roll that is arranged on each milling train rolled tube is come it is corrected, this method contains the 1st step～the 4th step that the following describes.
In the 1st step, calculate in advance rolling quantity setting value, with the relation of the ellipse amount of the pipe that records at the place of outlet side at least of roll type pipe correction machine.That is to say,,, calculate both function g that concerns δ c=g (φ) in advance by measure oval amount φ respectively at roll type pipe correction machine outlet side place for a plurality of pipes of setting various different rolling quantity δ c respectively and having corrected.
In the 2nd step, measure the ellipse amount of pipe at roll type pipe correction machine outlet side place.That is, measure the ellipse amount φ 1 of this pipe P that has corrected.
In the 3rd step, when the ellipse amount φ 1 of the pipe that records in the 2nd step at roll type pipe correction machine outlet side place is in outside the target zone, based on the setting value of the rolling quantity of in the 1st step, calculating, with the ellipse amount of the pipe that records at the place of outlet side at least of roll type pipe correction machine concern δ c=g (φ), calculate the change amount that makes the ellipse amount of pipe be in needed rolling quantity in the target zone at roll type pipe correction machine outlet side place.That is to say, if make the desired value (being in the arbitrary value in the target zone) of the ellipse amount of pipe be φ ', then obtain the setting value δ c ' that becomes the rolling quantity of target in order to obtain this desired value φ ' by δ c '=g (φ '), therefore, if making the setting value of the ellipse amount of this pipe of having corrected is δ c1, then the change amount Δ δ c of Bi Yao rolling quantity is calculated by Δ δ c=Δ δ c '-δ c1.
In the 4th step, the setting value of the rolling quantity in root P ' time under determining to correct based on the change amount Δ δ c of the rolling quantity of in the 3rd step, calculating.That is to say, be δ c2 if make the setting value of the rolling quantity of correcting root pipe down P ' time, and then δ c2 is determined by δ c2=δ c1+ Δ δ c.At this moment, in order to prevent to disperse, also can be multiplied by 0～1 mitigation coefficient to Δ δ c.
As described above, the autocontrol method of roll type pipe correction machine of the present invention is measured the ellipse amount of pipe at the outlet side place of arbor press, and the rolling quantity when root pipe is down corrected in change is so that this measured value is in the target zone of oval amount.That is to say that the ellipse amount of pipe at arbor press outlet side place that feedback is surveyed changes rolling quantity, therefore, can stably correct the ellipse of pipe.
Have, so-called " the ellipse amount of pipe " is meant the value with the maximum gauge-minimum diameter (mm) in the tube section or (maximum gauge-minimum diameter)/average diameter * 100 (%) definition again.The ellipse amount of pipe for example can be measured like this: be provided for from the external diameter meter of the external diameter of a plurality of pipes of radially measuring the roll type pipe correction machine outlet side, based on each measuring outside diameter value radially of making by this external diameter instrumentation, calculate maximum gauge and minimum diameter, and then when the ellipse amount of latter's definition, calculate average diameter.
Pipe is in the ellipse amount at roll type pipe correction machine outlet side place, and then is the change amount of necessary rolling quantity, changes according to the ellipse amount of pipe at roll type pipe correction machine entrance side place.That is to say, when the ellipse amount at roll type pipe correction machine entrance side place is bigger than the ellipse amount of the pipe of last time having corrected, make rolling quantity bigger than last time rolling quantity; Otherwise,, then make rolling quantity littler than last time rolling quantity if the ellipse amount at entrance side place is littler than the ellipse amount of the pipe of last time having corrected.Therefore, in order to obtain more stable rectification effect, preferably, measure the ellipse amount of pipe at roll type pipe correction machine entrance side place, this ellipse that feedovers is measured and is changed rolling quantity.
Therefore, in optimal way of the present invention, in the 1st step, calculate in advance rolling quantity setting value, with the relation of the ellipse amount of the pipe that records at roll type pipe correction machine entrance side and outlet side place.That is to say, for the various different rolling quantity δ c that set roll type pipe correction machine entrance side and outlet side place respectively and a plurality of pipes of having corrected, by measuring the ellipse amount φ i and the φ o at roll type pipe correction machine entrance side and outlet side place respectively, calculate the function g that these concern δ c=g (φ i, φ o) in advance.
In the 2nd step, measure this pipe P that has corrected at the ellipse amount φ at roll type pipe correction machine outlet side place o1, and measure the pipe P ' that then will correct at the ellipse amount φ at roll type pipe correction machine entrance side place i2.
In the 3rd step, when the ellipse amount φ o1 of the pipe P that has corrected when this of the roll type pipe correction machine outlet side place that records in the 2nd step is in outside the target zone, ellipse amount φ i2 based on the pipe that then will correct at the roll type pipe correction machine entrance side place that in the 2nd step, records, and the ellipse amount of the setting value of the rolling quantity of in the 1st step, calculating and the pipe that records at roll type pipe correction machine entrance side and outlet side place concern δ c=g (φ i, φ o), calculate the change amount that makes the ellipse amount of pipe be in needed rolling quantity in the target zone at roll type pipe correction machine outlet side place.That is to say, by δ c '=g (φ i2, φ o ') obtains in order to obtain pipe at the desired value φ o ' of the ellipse amount at roll type pipe correction machine outlet side place and become the setting value δ c ' of the rolling quantity of target, therefore, if making the setting value of the rolling quantity of this pipe of having corrected is δ c1, then the change amount Δ δ c of Bi Yao rolling quantity is calculated by Δ δ c=δ c '-δ c1.
In addition, pipe is in the ellipse amount at roll type pipe correction machine outlet side place, and then is the change amount of necessary rolling quantity, changes according to the temperature of pipe at roll type pipe correction machine entrance side place.That is to say, when the temperature at roll type pipe correction machine entrance side place is higher than the temperature of the pipe of last time having corrected, because distortion easily, makes rolling quantity littler than last time rolling quantity for this reason; Otherwise, if the temperature at entrance side place is lower than the temperature of the pipe of last time having corrected, and last time compared, strengthen rolling quantity.Therefore, in order to obtain more stable rectification effect, preferably, measure the temperature of pipe at roll type pipe correction machine entrance side place, the temperature that feedforward records changes rolling quantity.
Therefore, in optimal way of the present invention, in the 1st step, the relation of the temperature of the ellipse amount of the setting value of calculating rolling quantity in advance and the pipe that records at roll type pipe correction machine outlet side place and the pipe that records at the roll type pipe correction machine entrance side.That is to say, by measuring the ellipse amount φ of a plurality of pipes set the various different rolling quantity δ c at roll type pipe correction machine outlet side place respectively and to have corrected, measure the temperature T at roll type pipe correction machine entrance side place, calculate these in advance and concern δ c=g (φ, function g T).
In the 2nd step, the ellipse amount φ 1 of the pipe P that this that measure roll type pipe correction machine outlet side place corrected, and measure the temperature T 2 of the pipe P ' that then will correct at roll type pipe correction machine entrance side place.
In the 3rd step, when the ellipse amount φ 1 of the pipe P that has corrected when this of the roll type pipe correction machine outlet side place that records in the 2nd step is in outside the target zone, temperature T 2 based on the pipe P ' that then will correct at the roll type pipe correction machine entrance side place that in the 2nd step, records, and the temperature of the ellipse amount of the setting value of the rolling quantity of in the 1st step, calculating and the pipe that records at roll type pipe correction machine outlet side place and the pipe that records at roll type pipe correction machine entrance side place concern δ c=g (φ, T), calculate the change amount that makes the ellipse amount of pipe be in needed rolling quantity in the target zone at roll type pipe correction machine outlet side place.That is to say, by δ c '=g (φ ', T2) obtain in order to obtain pipe at the desired value φ ' of the ellipse amount at roll type pipe correction machine outlet side place and become the setting value δ c ' of the rolling quantity of target, therefore, if making the setting value of the rolling quantity of this pipe of having corrected is δ c1, then the change amount Δ δ c of Bi Yao rolling quantity calculates with Δ δ c=δ c '-δ c1.
According to the present invention, can provide the autocontrol method of the roll type pipe correction machine that can obtain stable rectification effect.
Description of drawings
Fig. 1 is a key diagram of roughly representing the general structure of roll type pipe correction machine.
Fig. 2 is the key diagram of apparatus structure of autocontrol method of roughly representing to be used to use the roll type pipe correction machine of an embodiment of the present invention.
Fig. 3 is a key diagram of schematically representing the schematic configuration of external diameter meter shown in Figure 2.
The curve map of an example of the relation of Fig. 4 amount of bow that is configured in right amount of bias of concave roll on the #2 milling train and arbor press outlet side that to be expression calculated and stored by operation control device shown in Figure 2.
Fig. 5 is the curve map of an example of the effect of the expression autocontrol method relevant with setting amount of bias embodiment.
The curve map of an example of the relation of Fig. 6 ellipse amount that is arranged on right rolling quantity of concave roll on the #2 milling train and arbor press outlet side that to be expression calculated and stored by operation control device shown in Figure 2.
Fig. 7 is the curve map of an example of the effect of the expression autocontrol method relevant with setting value rolling quantity embodiment.
Fig. 8 is the curve map of an example of the effect of the expression autocontrol method relevant with setting value rolling quantity another embodiment.
Fig. 9 is the curve map of an example of the effect of the expression autocontrol method relevant with setting value rolling quantity another embodiment.
Figure 10 is the curve map of an example of the effect of expression the present invention autocontrol method relevant with setting value amount of bias another embodiment.
Figure 11 is the curve map of expression the present invention autocontrol method relevant with setting value rolling quantity a embodiment again.
Description of reference numerals
1 roll type pipe correction machine
2,3 external diameter meters
4 radiation thermometers
5 operation control devices
The P pipe
The R concave roll
The specific embodiment
Below, explain with reference to accompanying drawing and to be used to implement best mode of the present invention.
Fig. 2 is the figure of apparatus structure that roughly represents to be used to use the autocontrol method of roll type pipe correction machine of the present invention.
As shown in Figure 2, the autocontrol method of present embodiment be used in roll type pipe correction machine (below, abbreviate " arbor press " as) on 1, this roll type pipe correction machine 1 has and is provided with a pair of concave roll faced mutually more than 3 to R, the milling train of R is (in illustrated example, be #1～#3 milling train totally 3 milling trains), make the concave roll that is arranged at least 1 milling train (being the #2 milling train in illustrated example) to R, R is with respect to being arranged on concave roll on other milling trains (being #1～#3 milling train) to R in illustrated example, R setovers, and with the concave roll that is arranged on each milling train # 1～#3 rolled tube P is come its rectification.
Be provided with the external diameter meter 2 of the external diameter that is used for the pipe P after the rectification of a plurality of radially mensuration at arbor press 1 outlet side.
Fig. 3 is the schematic diagram of schematic configuration of the external diameter meter 2 of expression present embodiment.As shown in Figure 3, the external diameter meter 2 of present embodiment has light-projecting portion 21 and light accepting part 22; Above-mentioned light-projecting portion 21 is made of LASER Light Source and scanning optics, and a scan edge (scanning abreast with the illustrated blank direction of arrow) laser beam, one side are to pipe P throw light; Above-mentioned light accepting part 22 is made of light-gathering optics and photo-electric conversion element, relatively disposes across pipe P and light-projecting portion 21, is used to receive above-mentioned laser beam.Become size to calculate the external diameter of pipe P by laser beam managing the time conversion that P blocking.
Have again, in Fig. 3, for convenience, external diameter meter 2 is made into and only has a pair of light-projecting portion 21 and light accepting part 22, but in fact have 22 pairs of a plurality of light-projecting portions 21 and light accepting parts, 22 pairs of these a plurality of light-projecting portions 21 and the light accepting parts light-projecting portion 21 separately and the optical axis of light accepting part 22 (projection and receive the direction of laser beam) are different, thus, can make progress in a plurality of footpaths and measure the external diameter of managing P.
In the present embodiment,,, calculate the position of the kernel of section of correcting preceding pipe P again, be provided with and have and the external diameter meter 3 of external diameter meter 2 with spline structure at the external diameters of arbor press 1 entrance side at a plurality of pipe P before radially measure correcting as optimal way.In addition, as optimal way, be provided for measuring the radiation thermometer 4 of pipe P temperature at arbor press 1 entrance side.
In operation control device 5, input external diameter meter 2 and 3 output signal (measuring outside diameter value and the kernel of section position finding value of pipe P) and the thermometric value of radiating thermometer 4, the setting value of the amount of bias when next one pipe P is corrected in computing and the setting value of rolling quantity.Then, the concave roll of operation control device 5 control arbor presses 1 is to the position of R, R, so that can obtain the setting value of the amount of bias that calculates and the setting value of rolling quantity.Below, the operation content in the operation control device 5 is carried out specific description.
The operation content of the setting value of the amount of bias when correcting next root pipe P at first, is described.Operation control device 5 is calculated the concave roll that is arranged on the #2 milling train in advance to the setting value of the amount of bias of R, R and the relation of the amount of bow of the pipe P that records at arbor press 1 outlet side place.That is to say, for the #2 milling train, to many pipe P that set various different amount of bias δ o respectively and corrected, measure their amount of bow r at arbor press 1 outlet side place respectively, thus, that calculates and store both in advance concerns δ o=f (r) function f.In addition, import the variation of the kernel of section position of the pipe P that comes, measure amount of bow r to pipe P length direction by calculating from external diameter meter 2.
That is to say that in fact the relation of the amount of bow r at amount of bias δ o and arbor press 1 outlet side place changes the external diameter of the radical of the inclination angle of R, R, the pipe P that corrected and pipe P, wall thickness etc. according to the concave roll that is arranged on the #2 milling train.For this reason, calculate and store a plurality of function f 1...fns corresponding with the value of these various parameters.For example, employing serves as the input data, serves as the inputoutput data of a plurality of combinations of output data with amount of bias δ o with the amount of bow r and the above-mentioned various parameter at arbor press 1 outlet side place, and make its learning neural network nonlinear models such as (neural network), thus, determine (identify) if the amount of bow r at input arbor press 1 outlet side place and above-mentioned various parameter, the nonlinear model of output and their corresponding amount of bias δ o just.
To be expression be arranged on concave roll on the #2 milling train to the amount of bias δ o (mm) of R, the R curve map with an example of the relation of the amount of bow r (mm) at arbor press 1 outlet side place by what operation control device 5 was calculated and stored to Fig. 4.In example shown in Figure 4, regulation r=a * δ o
2+ b * δ o+c.Wherein, a, b, c are for example obtained by least square method, a=0.0813, b=-1.009, c=3.6924.
As shown in Figure 4, amount of bias δ o is when compare when too small crooked correct amount deficiency with near suitable amount of bias (in example shown in Figure 4,6mm).And amount of bias δ o produces the phenomenon of buckling when comparing with suitable amount of bias when excessive, can not correct bending.
Then, the amount of bow r1 of operation control device 5 this pipe P that has corrected of measuring arbor presses 1 outlet side place.Then, when the amount of bow r1 that records is in outside the target zone (for example, in example shown in Figure 4, amount of bow is during greater than 0.6mm/m), as described above, based on the amount of bow of the setting value of the amount of bias of calculating in advance and the pipe that records at arbor press 1 outlet side concern δ o=f (r), calculate the change amount that makes the amount of bow of pipe be in needed amount of bias in the target zone at arbor press 1 outlet side place.That is to say, if make the desired value of the amount of bow of pipe be r ' (for example, in example shown in Figure 4, amount of bow r '=0.6mm/m as desired value), then obtain in order to obtain this desired value r ' setting value δ o ' as the amount of bias of target by δ o '=f (r '), therefore, be δ o1 if make the setting value of the amount of bias of this pipe P that has corrected, then the change amount Δ δ o of Bi Yao amount of bias is calculated by Δ δ o=Δ δ o '-δ o1.
At last, operation control device 5 is based on the change amount Δ δ o of the above-mentioned amount of bias of calculating like that, determines to correct the setting value of the amount of bias in next root pipe P ' time.That is to say, be δ o2 if make the setting value of the amount of bias of correcting next root pipe P ' time, and then δ o2 is determined by δ o2=δ o1+ Δ δ o.In order to prevent to disperse, also can be multiplied by 0～1 mitigation coefficient to δ o.
Fig. 5 is the curve map of an example of effect of the autocontrol method of expression present embodiment, and Fig. 5 (a) expression pipe is in the change of the amount of bow at arbor press 1 outlet side place, the change of the setting value of the amount of bias at Fig. 5 (b) expression # 2 milling train place.In example shown in Figure 5,, use the autocontrol method of present embodiment for the pipe of having corrected later at the 5th piece.In addition, the desired value of amount of bow being set at 0.5mm/m, is above-mentioned mitigation coefficient settings 0.5.
As shown in Figure 5, improve gradually in the amount of bow of the 5th pipe of having corrected later on, owing to reached desired value 0.5mm/m at the 8th piece pipe of having corrected, therefore the setting value of the amount of bias after is fixed.
The operation content of the setting value of the rolling quantity when correcting next root pipe P then, is described.Operation control device 5 is calculated the setting value of the right rolling quantity of the concave roll that is arranged on each milling train # 1～#3 and the relation of the ellipse amount of the pipe P that records at arbor press 1 outlet side place in advance.That is to say, measure respectively to each milling train # 1～#3 set various different rolling quantity δ c respectively and a plurality of pipe P of having corrected at the ellipse amount φ at arbor press 1 outlet side place, thus, calculate and store both function g that concerns δ c=g (φ) in advance.In addition, ellipse amount φ in the present embodiment is the value of calculating like this: based on a plurality of external diameters radially of the pipe P that comes from 2 inputs of external diameter meter, (maximum gauge-minimum diameter)/average diameter * 100 (%) equalization on the tube section of the length direction central portion (position with 50% length of total length) that makes pipe P on the length of tube direction.
In fact the relation of the ellipse amount φ at rolling quantity δ c and arbor press 1 outlet side place changes the external diameter of the radical of the inclination angle of R, R, the pipe P that corrected and pipe P, wall thickness etc. according to the concave roll that is arranged on each milling train.Therefore, calculate and store a plurality of function g1...gns corresponding with the value of these various parameters.For example, employing serves as the input data, serves as the inputoutput data of a plurality of combinations of output data with rolling quantity δ c with the ellipse amount φ and the above-mentioned various parameter at arbor press 1 outlet side place, and make nonlinear models such as its learning neural network, thus, determine (identify) if go out the ellipse amount φ at input arbor press 1 outlet side place and above-mentioned various parameter, the nonlinear model of the output rolling quantity δ c corresponding just with them.
To be expression be arranged on concave roll on the #2 milling train to the rolling quantity δ c (mm) of R, the R curve map with an example of the relation of the ellipse amount φ (%) at arbor press 1 outlet side place by what operation control device 5 was calculated and stored to Fig. 6.In example shown in Figure 6, regulation φ=a * δ c
2+ b * δ c+c.Wherein, a, b, c are for example obtained by least square method, a=0.0348, b=-0.4909, c=2.1251.
As shown in Figure 6, compare when too small, become the oval correction deficiency when rolling quantity δ c and near suitable rolling quantity (in example shown in Figure 6,7mm); And compare with suitable rolling quantity when excessive as rolling quantity δ c, produce outer surface angle of departure phenomenon, can not correct ellipse.
Then, the ellipse amount φ 1 of operation control device 5 this pipe P that has corrected of measuring arbor presses 1 outlet side place.Then, when the ellipse amount φ 1 that determines is in outside the target zone (for example, in example shown in Figure 6, oval amount was greater than 0.4% o'clock), as described above, based on the ellipse amount of the setting value of the rolling quantity of calculating in advance and the pipe that records at arbor press 1 outlet side place concern δ c=g (φ), the ellipse amount of calculating the pipe that makes arbor press 1 outlet side place is in the change amount of needed rolling quantity in the target zone.That is to say, if make the desired value of the ellipse amount of pipe be φ ' (for example, in the example shown in the figure δ, ellipse is measured=0.4% as desired value), then obtain in order to obtain this desired value φ ' setting value δ c ' as the rolling quantity of target by δ c '=g (φ '), therefore, be δ c1 if make the setting value of the rolling quantity of this pipe P that has corrected, then the change amount Δ δ c of Bi Yao rolling quantity is calculated by Δ δ c=δ c '-δ c1.
At last, operation control device 5 is based on the change amount Δ δ c of the above-mentioned rolling quantity of calculating like that, determines to correct the setting value of the rolling quantity in root pipe down P ' time, that is to say, if making the setting value of the rolling quantity of correcting root pipe down P ' time is δ c2, then δ c2 is determined by δ c2=δ c1+ Δ δ c.At this moment, in order to prevent to disperse, also can be multiplied by 0～1 such mitigation coefficient to Δ δ c.
Fig. 7 is the curve map of an example of effect of the autocontrol method of expression present embodiment, and Fig. 7 (a) expression pipe is in the change of the ellipse amount at arbor press 1 outlet side place, the change of the setting value of the rolling quantity at Fig. 7 (b) expression # 2 milling train place.In example shown in Figure 7,, use the autocontrol method of present embodiment for the pipe of having corrected later at the 5th piece.Having, the desired value of ellipse amount is set at 0.4%, is above-mentioned mitigation coefficient settings 0.5.As shown in Figure 7, owing to improve gradually in the ellipse amount of the 5th pipe of having corrected later on, reached desired value 0.4% at the 8th pipe of having corrected, therefore, rolling quantity afterwards is fixed.
Have again, in the present embodiment,, import the output signal (measured value of the external diameter of the pipe P at arbor press 1 entrance side place and the measured value of kernel of section position) of external diameter meters 3 as described above to operation control device 5 as optimal way.The setting value of the amount of bias when therefore, the output signal computing of enough this external diameter meters 3 of operation control device 5 energy corrects root pipe P and the setting value of rolling quantity.
Operation content when at first, the setting value of the amount of bias when correcting root pipe P down with the output signal computing of external diameter meter 3 being described.At this moment, operation control device 5 is calculated the concave roll that is arranged on the #2 milling train in advance to the setting value of the amount of bias of R, the R relation with the amount of bow of the pipe P that records at arbor press 1 entrance side and outlet side place.That is to say, for the #2 milling train has been set respectively various different amount of bias δ o also, carried out a plurality of pipe P of correcting, by measuring amount of bow ri and ro respectively at arbor press 1 entrance side and outlet side place, that calculates and store them in advance concerns δ o=f (ri, function f ro).
The relation of the amount of bow ro at amount of bias δ o and arbor press 1 outlet side place, in fact according to be arranged on concave roll on the #2 milling train to the inclination angle of R, R, carried out the radical of the pipe P that corrects, changes such as the external diameter of pipe P, wall thickness, therefore, calculate and store on this aspect of a plurality of function f 1...fn corresponding with these parameter values same as described above.
Then, the amount of bow ro1 of this pipe P that has corrected that operation control device 5 is measured arbor presses 1 outlet side place, and measure the amount of bow ri2 of the pipe P ' that then will correct of arbor press entrance side.Then, when the amount of bow ro1 that records is in outside the target zone, as described above, concern δ o=f (ri based on the amount of bow of the setting value of the amount of bias of calculating in advance and the pipe of measuring at arbor press 1 entrance side and outlet side place, ro), calculate the change amount that makes the amount of bow of pipe be in needed amount of bias in the target zone at arbor press 1 outlet side place.That is to say, if making the desired value of the amount of bow of pipe is ro ', then by δ o '=f (ri2, ro ') obtains the setting value δ o ' that becomes the amount of bias of target in order to obtain this desired value ro ', therefore, if making the setting value of the amount of bias of this pipe P that has corrected is δ o1, then the change amount Δ δ o of Bi Yao amount of bias is calculated by Δ δ o=δ o '-δ o1.
At last, operation control device 5 is based on the change amount Δ δ o of the above-mentioned amount of bias of calculating like that, determines to correct the setting value of the amount of bias in root pipe down P ' time.That is to say, be δ o2 if make the setting value of the amount of bias of correcting root pipe down P ' time, and then δ o2 is determined by δ o2=δ o1+ Δ δ o.At this moment, in order to prevent to disperse, also can be multiplied by 0～1 such mitigation coefficient to Δ δ o.
Fig. 8 is the curve map of an example of the effect of this autocontrol method of expression, and Fig. 8 (a) expression pipe is in the change of the amount of bow at arbor press 1 outlet side place, the change of the setting value of the amount of bias at Fig. 8 (b) expression # 2 milling train place.Example shown in Figure 8 is also same with example shown in Figure 5, for the 5th later rectification pipe, use the preferred control method of present embodiment.Having, the desired value of amount of bow is set at 0.5mm/m surely, is above-mentioned mitigation coefficient settings 0.5.As shown in Figure 8, on the 5th pipe of having corrected later on, amount of bow improves hastily, has reached desired value 0.5mm/m at the 6th pipe of having corrected, and therefore, the setting value of amount of bias afterwards is fixed.That is to say, compare, can improve amount of bow hastily with example shown in Figure 5.
Operation content when then, the setting value of the rolling quantity when correcting root pipe P down with the output signal computing of external diameter meter 3 being described.At this moment, operation control device 5 is calculated the concave roll that is arranged on each milling train # 1～#3 in advance to the setting value of the rolling quantity of R, the R relation with the ellipse amount of the pipe P that records at arbor press 1 entrance side and outlet side place.That is to say, for a plurality of pipe P that each milling train # 1～#3 set various different rolling quantity δ c respectively and corrected, measure the ellipse amount φ i and the φ o at arbor press 1 entrance side and outlet side place respectively, thus, calculate and store the function g that these concern δ c=g (φ i, φ o) in advance.
The relation of the ellipse amount φ o at rolling quantity δ o and arbor press 1 outlet side place, in fact according to the concave roll that is arranged on each milling train # 1～#3 the external diameter of the radical of the inclination angle of R, R, the pipe P that corrected, pipe P, wall thickness etc. are changed, therefore, calculate and store with corresponding this aspect of a plurality of function g1...gn of the value of these various parameters on above-mentioned same.
Then, the ellipse amount φ o1 of this pipe P that has corrected that operation control device 5 is measured arbor presses 1 outlet side place, and measure the ellipse amount φ i2 of the pipe P ' that then will correct at arbor press entrance side place.Then, when the ellipse amount φ o1 that determines is in outside the target zone, as described above, concern δ c=g (φ i based on the ellipse amount of the setting value of the rolling quantity of calculating in advance and the pipe that records at arbor press 1 entrance side and outlet side place, φ o), the ellipse amount of calculating the pipe that makes arbor press 1 outlet side place is in the change amount of needed rolling quantity in the target zone.That is to say, if making the desired value of the ellipse amount of pipe is φ o ', then by δ c '=g (φ i2, φ o ') obtains the setting value δ c ' that becomes the rolling quantity of target in order to obtain this desired value φ o ', therefore, if making the setting value of the rolling quantity of this pipe P that has corrected is δ c1, then the change amount Δ δ c of needed rolling quantity is calculated by Δ δ c=δ c '-δ c1.
At last, operation control device 5 is based on the change amount Δ δ c of the above-mentioned rolling quantity of calculating like that, determines to correct the setting value of the rolling quantity in root pipe down P ' time.That is to say that if the setting value of the rolling quantity of correcting root pipe down P ' time is decided to be δ c2, then δ c2 is determined by δ c2=δ c1+ Δ δ o.At this moment, in order to prevent to disperse, also can be multiplied by 0～1 mitigation coefficient to Δ δ o.
Fig. 9 is the curve map of an example of the effect of this autocontrol method of expression, the change of the ellipse amount of the pipe at Fig. 9 (a) expression arbor press 1 outlet side place, the change of the setting value of the rolling quantity at Fig. 9 (b) expression # 2 milling train place.Example shown in Figure 9 is also same with example shown in Figure 7, for the pipe of having corrected later at the 5th piece, uses the preferred autocontrol method of present embodiment.In addition, be the goal-setting of ellipse amount 0.4%, be above-mentioned mitigation coefficient settings 0.5.As shown in Figure 9, improve hastily in the ellipse amount of the 5th pipe of having corrected later on, reach desired value 0.4% on the 6th pipe of having corrected, therefore, the setting value of rolling quantity afterwards is fixed.That is to say, compare, can improve oval amount hastily with example shown in Figure 7.
Have again, in the present embodiment, as optimal way, as described above, to the thermometric value of operation control device 5 input radiation thermometers 4.The setting value of the amount of bias when therefore, operation control device 5 can use the thermometric value computing of this radiation thermometer 4 to correct root pipe P and the setting value of rolling quantity.
Operation content during the setting value of the amount of bias when using the thermometric value computing of radiation thermometer 4 to correct root pipe P down, just the temperature T of the pipe P at usefulness arbor press 1 entrance side place replaces the amount of bow ri at above-mentioned arbor press 1 entrance side place, other guide is identical, therefore omit the concrete operation content of explanation, an example of a description effect.
Figure 10 is the curve map of an example of the effect of this control method of expression, and Figure 10 (a) expression pipe is in the change of the amount of bow at arbor press 1 outlet side place, the change of the setting value of the amount of bias at Figure 10 (b) expression # 2 milling train place.The example shown in Figure 10 also example with shown in Figure 5 is the same, for the pipe of having corrected later at the 5th piece, uses the preferred autocontrol method of present embodiment.In addition, the desired value of amount of bow being set at 0.5mm/m, is above-mentioned mitigation coefficient settings 0.5.As shown in figure 10, improve hastily in the amount of bow of the 5th pipe of having corrected later on, on the 7th pipe of having corrected, reached desired value 0.5mm/m, therefore, the setting value of amount of bias afterwards is fixed.That is to say, compare, can improve amount of bow hastily with example shown in Figure 5.
Operation content during the setting value of the rolling quantity when using the thermometric value computing of radiation thermometer 4 to correct root pipe P down, the ellipse amount φ i that just replaces above-mentioned arbor press 1 entrance side place with the temperature T of the pipe P at arbor press 1 entrance side place, other all are same contents, therefore omit the concrete operation content of explanation, an example of a description effect.
Figure 11 is the curve map of an example of the effect of this autocontrol method of expression, and Figure 11 (a) expression pipe is in the change of the ellipse amount at arbor press 1 outlet side place, the change of the setting value of the rolling quantity at Figure 11 (b) expression # 2 milling train place.Example shown in Figure 11 is the same with example shown in Figure 7, for the 5th later rectification pipe, use the preferred autocontrol method of present embodiment.In addition, the desired value of ellipse amount being set at 0.4%, is above-mentioned mitigation coefficient settings 0.5.As shown in figure 11, for the pipe of having corrected later at the 5th, oval amount is improved hastily, has reached desired value 0.4% at the 7th pipe of having corrected, and therefore, the setting value of rolling quantity afterwards is fixed.That is to say, compare, can improve oval amount hastily with example shown in Figure 7.
Claims (6)
1. the autocontrol method of a roll type pipe correction machine, this roll type pipe correction machine has and is provided with the right milling train of facing mutually of concave roll more than 3, make the concave roll that is arranged at least 1 milling train to skew regulation amount of bias ground being disposed with respect to the concave roll that is arranged on other milling trains, with the concave roll that is arranged on each milling train rolled tube is come its rectification, it is characterized in that this method contains:
The 1st step, calculate in advance above-mentioned amount of bias setting value, with the relation of the amount of bow of the pipe that records at the place of outlet side at least of this roll type pipe correction machine;
The 2nd step is measured the amount of bow of pipe at the place of outlet side at least of above-mentioned roll type pipe correction machine;
The 3rd step, when the amount of bow of the aforementioned tube that is recorded by the 2nd step is in outside the target zone, based on the above-mentioned relation of in above-mentioned the 1st step, calculating, calculate the change amount that makes the amount of bow of pipe be in needed amount of bias in the target zone at above-mentioned roll type pipe correction machine outlet side place;
The 4th step, according to the change amount of the amount of bias of calculating by the 3rd step, the setting value of the amount of bias when determining to correct the root pipe.
2. the autocontrol method of a roll type pipe correction machine, this roll type pipe correction machine has and is provided with the right milling train of facing mutually of concave roll more than 3, make the concave roll that is arranged at least 1 milling train to skew regulation amount of bias ground being disposed with respect to the concave roll that is arranged on other milling trains, with the concave roll that is arranged on each milling train rolled tube is come its rectification, it is characterized in that this method contains:
The 1st step, the relation of the setting value of calculating above-mentioned amount of bias in advance and the amount of bow of the pipe that records at this roll type pipe correction machine entrance side and outlet side place;
The amount of bow of the pipe that the 2nd step, this that measure above-mentioned roll type pipe correction machine outlet side place have been corrected, and measure the amount of bow of the pipe that then will correct at above-mentioned roll type pipe correction machine entrance side place;
The 3rd step, when the amount of bow of pipe at roll type pipe correction machine outlet side place of having corrected when this that is recorded by above-mentioned the 2nd step is in outside the target zone, based on the amount of bow of the pipe that then will correct that in above-mentioned the 2nd step, records, with the above-mentioned relation of in above-mentioned the 1st step, calculating, calculate the change amount that makes the amount of bow of pipe be in needed amount of bias in the target zone at above-mentioned roll type pipe correction machine outlet side place;
The 4th step, based on the change amount of the amount of bias of calculating by the 3rd step, the setting value of the amount of bias when determining to correct the root pipe.
3. the autocontrol method of a roll type pipe correction machine, this roll type pipe correction machine has and is provided with the right milling train of facing mutually of concave roll more than 3, make the concave roll that is arranged at least 1 milling train to skew regulation amount of bias ground being disposed with respect to the concave roll that is arranged on other milling trains, with the concave roll that is arranged on each milling train rolled tube is come its rectification, it is characterized in that this method contains:
The 1st step, calculate in advance above-mentioned amount of bias setting value, with the relation of the temperature of the amount of bow of the pipe that records at this roll type pipe correction machine outlet side place and the pipe that records at this roll type pipe correction machine entrance side place;
The amount of bow of the pipe that the 2nd step, this that measure above-mentioned roll type pipe correction machine outlet side place have been corrected, and measure the temperature of the pipe that then will correct at above-mentioned roll type pipe correction machine entrance side place;
The 3rd step, when the amount of bow of the pipe of having corrected when this of the above-mentioned roll type pipe correction machine outlet side place that records in the 2nd step is in outside the target zone, temperature based on the pipe that then will correct at the above-mentioned roll type pipe correction machine entrance side place that in above-mentioned the 2nd step, records, the setting value of the amount of bias of in above-mentioned the 1st step, calculating, the amount of bow of the pipe that records at above-mentioned roll type pipe correction machine outlet side place reaches the relation of the temperature of the pipe that records at above-mentioned roll type pipe correction machine entrance side place, calculates the change amount that makes the amount of bow of pipe at above-mentioned roll type pipe correction machine outlet side place be in needed amount of bias in the target zone;
The 4th step, according to the change amount of the amount of bias of calculating by the 3rd step, the setting value of the amount of bias when determining to correct the root pipe.
4. the autocontrol method of a roll type pipe correction machine, this roll type pipe correction machine has and is provided with the right milling train of facing mutually of concave roll more than 3, make the concave roll that is arranged at least 1 milling train to skew regulation amount of bias ground being disposed with respect to the concave roll that is arranged on other milling trains, with the concave roll that is arranged on each milling train rolled tube is come its rectification, it is characterized in that this method contains:
The 1st step, calculate in advance rolling quantity setting value, with the relation of the ellipse amount of the pipe that records at the place of outlet side at least of above-mentioned roll type pipe correction machine;
The 2nd step is measured the ellipse amount of pipe at the place of outlet side at least of above-mentioned roll type pipe correction machine;
The 3rd step, when the ellipse amount of the aforementioned tube that records in above-mentioned the 2nd step is in outside the target zone, according to the setting value of the above-mentioned rolling quantity of in above-mentioned the 1st step, calculating, with the relation of the ellipse amount of the pipe that records at the place of outlet side at least of above-mentioned roll type pipe correction machine, calculate the change amount that makes the ellipse amount of pipe be in needed rolling quantity in the target zone at above-mentioned roll type pipe correction machine outlet side place;
The 4th step, according to the change amount of the rolling quantity of calculating by the 3rd step, the setting value of the rolling quantity when determining to correct the root pipe.
5. the autocontrol method of a roll type pipe correction machine, this roll type pipe correction machine has and is provided with the right milling train of facing mutually of concave roll more than 3, make the concave roll that is arranged at least 1 milling train to skew regulation amount of bias ground being disposed with respect to the concave roll that is arranged on other milling trains, with the concave roll that is arranged on each milling train rolled tube is come its rectification, it is characterized in that this method contains:
The 1st step, calculate in advance rolling quantity setting value, with the relation of the ellipse amount of the pipe that records at above-mentioned roll type pipe correction machine entrance side and outlet side place;
The ellipse amount of the pipe that the 2nd step, this that measure above-mentioned roll type pipe correction machine outlet side place have been corrected, and measure the ellipse amount of the pipe that then will correct at above-mentioned roll type pipe correction machine entrance side place;
The 3rd step, when the ellipse amount of the pipe of having corrected when this of the above-mentioned roll type pipe correction machine outlet side place that records in above-mentioned the 2nd step is in outside the target zone, based on the relation of the ellipse amount of the setting value of the ellipse amount of the pipe that then will correct at the above-mentioned roll type pipe correction machine entrance side place that in above-mentioned the 2nd step, records, the rolling quantity in above-mentioned the 1st step, calculated, the pipe that records at above-mentioned roll type pipe correction machine entrance side and outlet side place, calculate the change amount that makes the ellipse amount of pipe be in needed rolling quantity in the target zone at above-mentioned roll type pipe correction machine outlet side place;
The 4th step, based on the change amount of the amount of bias of calculating by above-mentioned the 3rd step, the setting value of the amount of bias when determining to correct the root pipe.
6. the autocontrol method of a roll type pipe correction machine, this roll type pipe correction machine has and is provided with the right milling train of facing mutually of concave roll more than 3, make the concave roll that is arranged at least 1 milling train to skew regulation amount of bias ground being disposed with respect to the concave roll that is arranged on other milling trains, with the concave roll that is arranged on each milling train rolled tube is come its rectification, it is characterized in that this method contains:
The 1st step, calculate in advance rolling quantity setting value, with the relation of the temperature of the ellipse amount of the pipe that records at above-mentioned roll type pipe correction machine outlet side place and the pipe that records at this roll type pipe correction machine entrance side place;
The ellipse amount of the pipe that the 2nd step, this that measure above-mentioned roll type pipe correction machine outlet side place have been corrected, and measure the temperature of the pipe that then will correct at above-mentioned roll type pipe correction machine entrance side place;
The 3rd step, when the ellipse amount of the pipe of having corrected when this of the above-mentioned roll type pipe correction machine outlet side place that records in above-mentioned the 2nd step is in outside the target zone, temperature according to the pipe that then will correct at the above-mentioned roll type pipe correction machine entrance side place that in above-mentioned the 2nd step, records, the setting value of the rolling quantity of calculating in above-mentioned the 1st step, the ellipse amount of the pipe that records at above-mentioned roll type pipe correction machine outlet side place reaches the relation of the temperature of the pipe that records at above-mentioned roll type pipe correction machine entrance side place, calculates the change amount that makes the ellipse amount of pipe at above-mentioned roll type pipe correction machine outlet side place be in needed rolling quantity in the target zone;
The 4th step, according to the change amount of the rolling quantity of calculating by the 3rd step, the setting value of the rolling quantity when determining to correct the root pipe.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP101518/2005 | 2005-03-31 | ||
| JP2005101518A JP2006281228A (en) | 2005-03-31 | 2005-03-31 | Method for controlling roll-type pipe straightening machine |
| PCT/JP2006/306678 WO2006106834A1 (en) | 2005-03-31 | 2006-03-30 | Automatic control method of roll type pipe correction machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101151111A true CN101151111A (en) | 2008-03-26 |
| CN101151111B CN101151111B (en) | 2010-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006800107290A Expired - Fee Related CN101151111B (en) | 2005-03-31 | 2006-03-30 | Automatic control method of roll type pipe correction machine |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1870174B1 (en) |
| JP (1) | JP2006281228A (en) |
| CN (1) | CN101151111B (en) |
| BR (1) | BRPI0609606B1 (en) |
| WO (1) | WO2006106834A1 (en) |
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| CN101927278A (en) * | 2010-06-03 | 2010-12-29 | 天津商业大学 | Method for realizing precision straightening of thin-wall seamless steel tubes by adopting six-roller straightener |
| CN106216441A (en) * | 2016-08-29 | 2016-12-14 | 内蒙古包钢钢联股份有限公司 | Multi-cross roll straightening machine anti-scratch straightening operation method |
| CN111468565A (en) * | 2020-04-14 | 2020-07-31 | 太原科技大学 | Method for setting flattening amount of straightening roller of ultra-large-diameter seamless steel pipe |
| CN112543683A (en) * | 2018-08-09 | 2021-03-23 | 日本制铁株式会社 | Method for correcting curvature |
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| JP5298646B2 (en) * | 2008-05-30 | 2013-09-25 | Ｊｆｅスチール株式会社 | A method for manufacturing ERW line pipes with excellent buckling resistance |
| JP5298645B2 (en) * | 2008-05-30 | 2013-09-25 | Ｊｆｅスチール株式会社 | A method for manufacturing ERW line pipes with excellent buckling resistance |
| JP2013104719A (en) * | 2011-11-11 | 2013-05-30 | Nippon Steel & Sumitomo Metal | External surface bend measuring-method for steel pipe |
| DE102020201477A1 (en) * | 2020-02-06 | 2021-08-12 | Sms Group Gmbh | Device and method for adjusting or adjusting a roll gap of a two-roll straightening machine for bars and / or profiles |
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-
2005
- 2005-03-31 JP JP2005101518A patent/JP2006281228A/en active Pending
-
2006
- 2006-03-30 EP EP06730626.6A patent/EP1870174B1/en not_active Expired - Fee Related
- 2006-03-30 CN CN2006800107290A patent/CN101151111B/en not_active Expired - Fee Related
- 2006-03-30 WO PCT/JP2006/306678 patent/WO2006106834A1/en active Application Filing
- 2006-03-30 BR BRPI0609606-9A patent/BRPI0609606B1/en active IP Right Grant
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101927278A (en) * | 2010-06-03 | 2010-12-29 | 天津商业大学 | Method for realizing precision straightening of thin-wall seamless steel tubes by adopting six-roller straightener |
| CN101927278B (en) * | 2010-06-03 | 2012-11-07 | 天津商业大学 | Method for realizing precision straightening of thin-wall seamless steel tubes by adopting six-roller straightener |
| CN106216441A (en) * | 2016-08-29 | 2016-12-14 | 内蒙古包钢钢联股份有限公司 | Multi-cross roll straightening machine anti-scratch straightening operation method |
| CN106216441B (en) * | 2016-08-29 | 2019-06-04 | 内蒙古包钢钢联股份有限公司 | The anti-scratch straightening operation method of multi-cross roll straightening machine |
| CN112543683A (en) * | 2018-08-09 | 2021-03-23 | 日本制铁株式会社 | Method for correcting curvature |
| CN111468565A (en) * | 2020-04-14 | 2020-07-31 | 太原科技大学 | Method for setting flattening amount of straightening roller of ultra-large-diameter seamless steel pipe |
| CN111468565B (en) * | 2020-04-14 | 2021-08-10 | 太原科技大学 | Method for setting flattening amount of straightening roller of ultra-large-diameter seamless steel pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2006281228A (en) | 2006-10-19 |
| WO2006106834A1 (en) | 2006-10-12 |
| EP1870174B1 (en) | 2014-09-17 |
| EP1870174A1 (en) | 2007-12-26 |
| BRPI0609606A2 (en) | 2010-04-20 |
| CN101151111B (en) | 2010-12-01 |
| EP1870174A4 (en) | 2013-08-21 |
| BRPI0609606B1 (en) | 2019-06-25 |
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