CN109550796B - Online roller shape detection device and method thereof - Google Patents
Online roller shape detection device and method thereof Download PDFInfo
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- CN109550796B CN109550796B CN201910045166.8A CN201910045166A CN109550796B CN 109550796 B CN109550796 B CN 109550796B CN 201910045166 A CN201910045166 A CN 201910045166A CN 109550796 B CN109550796 B CN 109550796B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/12—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring roll camber
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Abstract
The invention provides an online roller shape detection device and a method thereof, comprising a sensor array and a calculation module connected with the sensor array; the detection surface of the sensor array points to and is parallel to the hot rolling roller;a plurality of detection positions are uniformly arranged on the detection surface of the sensor along a straight line; a distance sensor is arranged at the detection position; the calculation module stores the position coordinates of each detection position on the detection surface and stores the initial detection distance L between the surface of the roller and each detection position when the roller is not in operation 0 The included angle theta between the signal detection direction of the distance sensor and the horizontal plane is also stored; when the roller shape of the roller in the running state is detected, the distance sensor detects the real-time distance Lx between the surface of the roller and each detection position according to the preset frequency, and the calculation module detects the real-time distance Lx according to the L 0 Lx calculates the current roller diameter corresponding to each detection position, and can associate the roller diameter data measured by each detection position with the position coordinates of each detection position on the detection surface to obtain a roller profile curve; the invention can detect the roller shape of the roller in real time.
Description
Technical Field
The invention relates to the technical field of machining, in particular to an online roller shape detection device and method.
Background
At present, no patent exists at home and abroad, which relates to a related device and technology for detecting the roll shape of a hot rolling roll on line, and the device and the technology can only detect the roll shape off line before or after the roll is used.
However, in the case of the roll profile of hot rolling, it is extremely important to the production control process of hot rolling. The roll profile during rolling determines the profile conditions of the aluminum alloy strip during rolling, such as transverse thickness distribution, thickness difference, convexity and the like. For example, if the roll shape during rolling is a convex roll shape, the corresponding plate shape is concave with medium convexity; if the roller shape during rolling is a concave roller shape, the corresponding plate shape is that the convexity is convex. Generally, in order to achieve an optimal profile of the strip, i.e. a profile that is straight and free of crown, it is required that the profile of the rolls during rolling be flat.
Therefore, if the roll profile condition of the roll can be detected on line through a certain technical means or equipment, the profile in the rolling process can be known in time, and the production control and optimization are facilitated.
The roll shape of the rolling process is actually the change of the diameter of the roll. In the rolling process, because the roller is influenced by factors such as extremely large rolling load pressure, hydraulic roller bending force, roller shifting of the intermediate roller, thermal expansion of the roller caused by rolling deformation heat and the like, and meanwhile, the roller has certain bounce (namely roller bounce) caused by elastic deformation, the diameter of the roller can be changed, is different from the initial diameter of the roller, and the actual diameter of the roller is changed, so that the roller shape is changed. In the actual rolling process, the roll shape change caused by the factors cannot be measured and monitored in real time, and the general theoretical calculation cannot be completely consistent with the actual roll shape change.
Therefore, if the change of the diameter of the roller can be detected on line through a certain technical means or equipment, so that the roller profile condition of the roller can be measured on line, the plate profile in the rolling process can be known in time, and the production control and optimization are facilitated.
Disclosure of Invention
The invention provides an online roller shape detection device and method, which can detect the roller shape of a roller in real time.
The invention adopts the following technical scheme.
An online roll shape detection device is used for detecting the roll shape of a hot rolling roll in real time, and comprises a sensor array and a calculation module connected with the sensor array; the detection surface of the sensor array points to and is parallel to the hot rolling roller; a plurality of detection positions are uniformly arranged on a detection surface of the sensor along a straight line; a distance sensor is arranged at the detection position; the calculation module stores the position coordinates of each detection position on the detection surface and stores the initial detection between the surface of the roller and each detection position when the roller is not in operationDistance L 0 The included angle theta between the signal detection direction of the distance sensor and the horizontal plane is also stored; when the roller shape of the roller in the running state is detected, the distance sensor detects the real-time distance Lx between the surface of the roller and each detection position according to the preset frequency, and the calculation module detects the real-time distance Lx according to the L 0 And Lx calculating the current roll diameter corresponding to each detection position, and associating the roll diameter data measured by each detection position with the position coordinates of each detection position on the detection surface to obtain a roll profile curve.
The sensor array is a strip-shaped sensor assembly transversely arranged along the direction of the roller; the sensor assembly is mounted on a guide plate at the roll inlet or outlet.
The mounting position of the distance sensor of the sensor assembly is 5-20mm lower than the position of a rolling line; the working temperature range of the distance sensor is 20 to 200 ℃; an included angle theta between the detection signal direction of the distance sensor and the horizontal plane is an included angle between the installation angle of the distance sensor and the horizontal plane; the included angle theta ranges from 0 degree to 90 degrees.
And uniformly arranging 20 to 3000 detection positions on a detection surface of the sensor component along a transverse straight line, wherein the distance between the detection positions is 1 to 100mm.
An online roller shape detection device comprises the following detection methods;
let D Bx Is the roll diameter, L, of the roll at a certain detection time corresponding to a certain detection position 1 For the distance of the detected position from the roller centerline, L 0 The L before rolling can be obtained by the detection position before rolling and the initial detection distance of the roller 1 And L 0 Is a difference Δ L of the horizontal projection distance 0 Is composed of
And then obtaining a roll diameter conversion formula corresponding to the detection position at any time as
The calculation module obtains D of each detection position in the same detection moment Bx Are collected and D is Bx The values of (a) are arranged according to the position coordinates of the detection positions in the transverse direction of the sensor assembly to obtain a roll profile curve chart.
In the detection method, each distance sensor works within a temperature interval of 20 to 200 ℃; the roll profile curve graph is formed by fitting.
The invention has the advantages that the sensor assembly is arranged at the inlet or the outlet of the roller, the distance between the sensor assembly and the roller is detected on line in real time, and the real-time roller diameter condition of the roller is obtained according to the conversion relation, so that the aim of detecting the roller shape is fulfilled.
Drawings
The invention is described in further detail below with reference to the following figures and detailed description:
FIG. 1 is a schematic of the present invention;
FIG. 2 is a simulation of the distance sensor installation and on-line roll diameter change of the present invention;
FIG. 3 is a schematic representation of the resulting roll profile of the present invention;
in the figure: 1-a sensor array; 2-rolling; 3-distance sensor.
Detailed Description
As shown in fig. 1 to 3, an on-line roll profile inspection apparatus for inspecting a roll profile of a hot rolling roll in real time includes a sensor array 1 and a calculation module connected to the sensor array; the detection surface of the sensor array points to and is parallel to the hot rolling roller 2; a plurality of detection positions are uniformly arranged on a detection surface of the sensor along a straight line; a distance sensor 3 is arranged at the detection position; the calculation module stores the position coordinates of each detection position on the detection surface and stores the initial detection distance L between the surface of the roller and each detection position when the roller is not in operation 0 The included angle theta between the signal detection direction of the distance sensor and the horizontal plane is also stored; when the roller shape of the roller in the running state is detected, the distance sensor detects the real-time distance Lx between the surface of the roller and each detection position according to the preset frequency, and the calculation module detects the real-time distance Lx according to the L 0 And Lx calculation and detectionThe corresponding current roll diameter is measured, and the roll diameter data measured by each detection position can be associated with the position coordinates of each detection position on the detection surface to obtain a roll profile curve.
The sensor array is a strip-shaped sensor assembly which is transversely arranged along the direction of the roller; the sensor assembly is mounted on a guide plate at the roll inlet or outlet.
The distance sensor mounting position of the sensor assembly is 5 to 20mm lower than the position of a rolling line; the working temperature range of the distance sensor is 20 to 200 ℃; an included angle theta between the detection signal direction of the distance sensor and the horizontal plane is an included angle between the installation angle of the distance sensor and the horizontal plane; the included angle theta ranges from 0 degree to 90 degrees.
And (3) uniformly arranging 20 to 3000 detection positions on a detection surface of the sensor assembly along a transverse straight line, wherein the distance between the detection positions is 1 to 100mm.
An online roller shape detection device comprises the following detection methods;
let D Bx The roll diameter, L, of a roll at a certain detection time corresponding to a certain detection position 1 For the distance of the detected position from the roller centerline, L 0 The L before rolling can be obtained by the detection position before rolling and the initial detection distance of the roller 1 And L 0 Is a difference Δ L of the horizontal projection distance 0 Is composed of
Further obtaining a conversion formula of the roll diameter of the roll corresponding to the detection position at any moment as
The calculation module obtains D of each detection position in the same detection moment Bx Collect and combine D Bx The values of (a) are arranged according to the position coordinates of the detection positions in the transverse direction of the sensor assembly to obtain a roll profile curve chart.
In the detection method, each distance sensor works within a temperature interval of 20 to 200 ℃; the roll profile curve graph is formed by fitting.
The embodiment is as follows:
a5182 aluminum alloy with the width of 1700mm, the finishing temperature of 320 ℃ and the hot rolling state of F state is produced on a 1+3 hot rolling mill, and the scheme of the invention is implemented only before the F3 inlet of the last stand.
The initial roll diameter D0 of the last frame F3 before rolling is 750mm, the distance L1 between the sensor and the central line of the roll is 500mm, the installation angle theta is 15 degrees, the distance L0 between the sensor and the roll before rolling is 436.28mm, and the process of roll shape detection is as follows:
1. the inlet sensor assembly is reasonably installed, the installation height of the inlet sensor assembly is 10mm lower than that of a rolling line, the environment temperature of the distance sensor is controlled to be 20-200 ℃, the detection precision of 4 micrometers is maintained, the use distance is ensured to be 2m, the stability, the accuracy and the effectiveness of detection are ensured, and each distance sensor only measures the position of the front roll surface of the roll.
2. And detecting the transverse roll diameter condition of the inlet strip in real time on line, and obtaining the roll diameter at a certain moment through the distance Lx of a certain width position at the certain moment measured by a sensor.
3. The roll diameter values in all width directions at this moment are gradually connected into a curve along the width direction of the roll to obtain a roll profile curve at this moment, as shown in fig. 3.
Claims (3)
1. An online roll shape detection device is used for detecting the roll shape of a hot rolling roll in real time, and is characterized in that: the detection device comprises a sensor array and a calculation module connected with the sensor array; the detection surface of the sensor array points to and is parallel to the hot rolling roller; a plurality of detection positions are uniformly arranged on a detection surface of the sensor along a straight line; a distance sensor is arranged at the detection position; the calculation module stores the position coordinates of each detection position on the detection surface and the initial detection distance L between the surface of the roller and each detection position when the roller is not in operation 0 The included angle theta between the signal detection direction of the distance sensor and the horizontal plane is also stored; when detecting the shape of the running rollThe distance sensor detects the real-time distance Lx between the surface of the roller and each detection position according to a preset frequency, and the calculation module detects the real-time distance Lx according to L 0 Lx calculates the current roll diameter corresponding to each detection position, and associates the roll diameter data measured by each detection position with the position coordinates of each detection position on the detection surface to obtain a roll profile curve;
the sensor array is a strip-shaped sensor assembly transversely arranged along the direction of the roller; the sensor assembly is arranged on a guide plate at the inlet or the outlet of the roller;
the mounting position of the distance sensor of the sensor assembly is 5-20mm lower than the position of a rolling line; the working temperature range of the distance sensor is 20 to 200 ℃; an included angle theta between the detection signal direction of the distance sensor and the horizontal plane is an included angle between the installation angle of the distance sensor and the horizontal plane; the included angle theta ranges from 0 degree to 90 degrees;
20 to 3000 detection positions are uniformly arranged on a detection surface of the sensor assembly along a transverse straight line, and the distance between the detection positions is 1 to 100mm;
each distance sensor only measures the roller surface position of the roller on the front surface of the distance sensor;
the detection method of the detection device is as follows;
let D Bx Is the roll diameter, L, of the roll at a certain detection time corresponding to a certain detection position 1 For the distance of the detected position from the roller centerline, L 0 The L before rolling can be obtained by the detection position before rolling and the initial detection distance of the roller 1 And L 0 Is a difference Δ L of the horizontal projection distance 0 Is composed of
And then obtaining a roll diameter conversion formula corresponding to the detection position at any time as
2. According toAn on-line roll shape detecting apparatus as set forth in claim 1, wherein: the calculation module obtains D of each detection position in the same detection moment Bx Are collected and D is Bx The values of (a) are arranged according to the position coordinates of the detection positions in the transverse direction of the sensor assembly to obtain a roll profile graph.
3. An on-line roll type detecting device according to claim 2, wherein: in the detection method, the roller profile curve graph is formed by fitting.
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| JPH0921633A (en) * | 1995-07-10 | 1997-01-21 | Hitachi Ltd | Method and apparatus for on-line measurement of shape of poll, method and apparatus for on-line grinding of roll, apparatus for on-line measurement of diameter of roll and rolling mill |
| JPH09257456A (en) * | 1996-03-25 | 1997-10-03 | Kawasaki Steel Corp | Method for measuring roll profile and apparatus therefor |
| CN102840807B (en) * | 2011-06-23 | 2015-01-21 | 宝山钢铁股份有限公司 | Non-contact type online roll profile curve measuring device and method |
| CN103537489A (en) * | 2013-09-13 | 2014-01-29 | 徐州工程学院 | Reflection-type roll wear degree on-line detection device |
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| CN106694572A (en) * | 2017-02-28 | 2017-05-24 | 中冶华天工程技术有限公司 | Online rolling process adjusting system and method based on roller wear detection |
| CN106944485A (en) * | 2017-03-16 | 2017-07-14 | 燕山大学 | It is a kind of to be used to measure the device and method that electromagnetism regulates and controls Roll Shape Curve |
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Application publication date: 20190402 Assignee: ZHONGLV SOUTHEAST MATERIAL INSTITUTE (FUJIAN) TECHNOLOGY CO.,LTD. Assignor: CHALCO RUIMIN Co.,Ltd. Contract record no.: X2023350000296 Denomination of invention: An online roller profile detection device and its method Granted publication date: 20230407 License type: Common License Record date: 20230706 |
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