CN109759458B - Rolled piece width measuring system and method for rolling mill push bench - Google Patents
Rolled piece width measuring system and method for rolling mill push bench Download PDFInfo
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- CN109759458B CN109759458B CN201811592021.1A CN201811592021A CN109759458B CN 109759458 B CN109759458 B CN 109759458B CN 201811592021 A CN201811592021 A CN 201811592021A CN 109759458 B CN109759458 B CN 109759458B
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Abstract
The invention discloses a rolled piece width measuring system and method for a rolling mill push bed, wherein the system comprises a laser range finder, a laser alignment plate and a PLC data acquisition system, wherein the laser range finder is respectively arranged on two sides of the push bed; the laser alignment point is arranged on the push head and is positioned at the longitudinal center of the push head; the PLC data acquisition system is used for calculating and remotely transmitting acquired data; the invention can effectively avoid the influence of the violent vibration of the manipulator on the precision of the measuring device, greatly improve the stability of the width measuring system of the rolling mill manipulator and reduce the damage rate of equipment.
Description
Technical Field
The disclosure relates to the field of width measurement of a push bench of a wide (medium) and thick plate rolling mill, in particular to a rolled piece width measurement system and a rolled piece width measurement method in a centering process of a rolled piece on the push bench.
Background
In the course of rolling steel plates, wide (medium) plate mills generally calculate the width by centering the rolling stock on a pusher. The real-time online measurement data of the rolling mill push bench on the width of a rolled piece directly influence the control of the process requirements such as the quality, the plate shape and the like of a rolled steel plate.
At present, the width measurement of a rolling mill manipulator mostly adopts a built-in displacement sensor of a manipulator push rod hydraulic cylinder or a mode of additionally installing a pulse encoder on a synchronous driving shaft, and due to the fact that the environment of a production field is severe and the equipment impact vibration is large, the built-in displacement sensor or the pulse encoder is easy to generate messy code fluctuation and is in mechanical hard contact with a manipulator body, the manipulator is easy to damage, production accidents are caused, the control of product quality is influenced, and the equipment maintenance cost is increased.
In summary, an effective solution to the problem of damage to the detection equipment or measurement deviation caused by impact and vibration of the equipment in the rolling process is not available.
Disclosure of Invention
In order to overcome the defects of the prior art, the width measuring system and the width measuring method for the rolled piece in the centering process of the rolled piece on the push bench are provided, so that the influence of severe vibration of the push bench on the precision of a measuring device can be effectively avoided, the stability of the width measuring system of the push bench of the rolling mill is greatly improved, and the damage rate of equipment is reduced.
The technical scheme adopted by the disclosure is as follows:
a rolled piece width measuring system for a rolling mill push bench comprises laser range finders arranged on two sides of the push bench, a laser alignment plate arranged on an operation side push head, a laser alignment plate arranged on a transmission side push head and a PLC data acquisition system; the laser range finder obtains displacement data of the operating side push head and the transmission side push head by measuring the displacement data of the laser alignment plate, and transmits the measured displacement data to the PLC data acquisition system, and the PLC data acquisition system calculates the width of the rolled piece according to the received displacement data of the operating side push head and the transmission side push head.
Furthermore, the laser range finder and the laser alignment plate on the same side of the laser range finder are arranged oppositely, and the centers of the laser range finder and the laser alignment plate are located on the same horizontal line.
Further, the laser alignment plate is welded in the middle of the push head guide plate.
Furthermore, the PLC data acquisition system comprises a PLC controller, a communication module and a human-computer interaction interface, wherein the PLC controller compares whether the displacement of the operating side pushing head and the displacement of the transmission side pushing head have deviation or not, and if yes, the PLC controller prompts an alarm through the human-computer interaction interface; if not, calculating the width of the rolled piece according to the received displacement data of the operating side pushing head and the transmission side pushing head, and displaying the width on a human-computer interaction interface.
A rolled piece width measuring method for a rolling mill push bench, the method being implemented based on a rolled piece width measuring system for a rolling mill push bench as described above, the method comprising the steps of:
calibrating the aiming position of the laser range finder;
measuring displacement data of the operating side pushing head and the transmission side pushing head; the displacement data comprises an initial transmission side push head position, an initial operation side push head position, a transmission side push head position when holding the rolled piece and an operation side push head position when holding the rolled piece;
and calculating the width of the rolled piece according to the displacement data of the operating side pushing head or the displacement data of the transmission side pushing head.
Further, the method for calculating the width of the rolled piece according to the displacement data of the operating side pushing head comprises the following steps:
calculating the difference value between the push head position value of the operation side and the push head thickness of the operation side when the rolled piece is held, so as to obtain the displacement of the push head of the operation side;
and (4) subtracting the maximum opening width of the manipulator from the double value of the displacement of the operating side pushing head to obtain the width of the rolled piece.
Further, the method for calculating the width of the rolled piece according to the displacement data of the transmission side push head comprises the following steps:
calculating the difference value between the push head position value of the transmission side and the thickness of the push head of the transmission side when the rolled piece is held, and obtaining the displacement of the push head of the transmission side;
and (4) subtracting the maximum opening width of the pusher from the double value of the displacement of the transmission side pusher to obtain the width of the rolled piece.
A rolled piece width measuring method for a rolling mill push bench, the method being implemented based on a rolled piece width measuring system for a rolling mill push bench as described above, the method comprising the steps of:
calibrating the aiming position of the laser range finder;
measuring displacement data of the operating side pushing head and the transmission side pushing head; the displacement data comprises an initial transmission side push head position, an initial operation side push head position, a transmission side push head position when holding the rolled piece and an operation side push head position when holding the rolled piece;
comparing the displacement of the operating side pushing head with the displacement of the transmission side pushing head to determine whether an error exists, and if so, prompting an alarm; if not, calculating the width of the rolled piece according to the displacement data of the operating side pushing head and the displacement data of the transmission side pushing head;
further, the method for calculating the width of the rolled piece comprises the following steps:
calculating the difference value between the push head position value of the operation side and the push head thickness of the operation side when the rolled piece is held, so as to obtain the displacement of the push head of the operation side;
calculating the difference value between the push head position value of the transmission side and the thickness of the push head of the transmission side when the rolled piece is held, and obtaining the displacement of the push head of the transmission side;
and respectively differentiating the maximum opening width of the manipulator with the displacement of the operating side pushing head and the displacement of the transmission side pushing head to obtain the width of the rolled piece.
Through above-mentioned technical scheme, this disclosed beneficial effect is:
(1) according to the method, the actual position of the push head is indirectly obtained by measuring the position of the laser alignment plate through the laser range finder, and the width of a rolled piece is calculated according to the characteristic that the push heads on the two sides of the push bench synchronously move relatively at equal intervals, so that the stability and the accuracy of width measurement data of the push bench are ensured, and the quality precision of products is ensured;
(2) the laser range finder disclosed is consistent with the alignment plate level on the pushing head, does not produce connection contact with the pushing machine body equipment, is independently installed, can effectively avoid damage or measurement deviation of detection equipment caused by equipment impact vibration in the rolling process, reduces the equipment failure rate and reduces the equipment maintenance cost.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this disclosure, are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the application and not to limit the disclosure.
FIG. 1 is a schematic diagram of a field application of a product width measuring system;
FIG. 2 is a block diagram of a rolled piece width measuring system;
FIG. 3 is a flow chart of a rolled piece width measurement method;
wherein: 1. a laser range finder; 2. a laser alignment plate; 3. pushing the head; 4. rolling pieces; 5. a rolling line centerline; l is the maximum opening width of the manipulator; w is the width of the rolled piece; LDS is the initial transmission side push head position; LOS is the initial operation side push head position; LDS1 is the position of the transmission side push head when holding the rolled piece; LOS1 is the operating side push head position when holding the rolled piece; HDS is the thickness of the transmission side push head; HOS is the operating side ram thickness.
Detailed Description
The present disclosure is further described with reference to the following drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
One or more embodiments provide a product width measurement system for a rolling mill push bench, as shown in figure 1, the rolling mill manipulator comprises a manipulator body, a rolled piece arranged on the manipulator body and a manipulator arranged on the operation side and the transmission side of the manipulator body, as shown in figure 2, the system comprises a laser alignment plate arranged on each push head, laser range finders arranged on two sides of a push bed body and a PLC data acquisition system, wherein the laser alignment plate and the laser range finders are arranged oppositely, the centers of the laser range finder and the PLC data acquisition system are positioned on the same horizontal line, the steel holding displacement of the two pushing heads during steel holding is measured by the two laser distance measuring instruments respectively, and transmits the measured displacement to a control system, calculates the actual width of the rolled piece through a PLC data acquisition system, the steel holding displacement is an absolute displacement value from the maximum opening degree of the push bench to the time of holding a rolled piece tightly.
In this embodiment, the PLC data acquisition system includes a PLC controller and a communication module, and the PLC controller receives the measurement data sent by the two laser distance meters, calculates the width of the rolled piece, and sends the measurement result to the mill control system for width control through the communication module.
The rolled piece width measuring system provided by the embodiment further comprises a human-computer interaction interface, the human-computer interaction interface is connected with the PLC, the human-computer interaction interface is used for displaying rolled piece width data obtained by calculation of the PLC, and when the PLC receives data measured by the two laser range finders which are unequal, the human-computer interaction interface is used for prompting and alarming to prompt that asynchronous faults of push heads at two sides of the manipulator exist.
In this embodiment, the laser alignment plate on the push head is welded in the middle of the push head guide plate and used for laser aiming and calibration of the laser range finder, the laser range finder measures the steel holding displacement of the push head in the steel holding process by measuring the displacement of the alignment point, and transmits the measurement data to the PLC controller, and the PLC controller calculates the width of the rolled piece according to the received measurement data and transmits the measurement result to the rolling mill control system through the communication module for width control of the rolled piece. The laser alignment plate may be a 10cm square steel plate.
In this embodiment, the laser range finder is installed in the outside of the push head guide plates on both sides of the push bench, does not have any connection contact with the push bench body equipment, and is independently installed for measuring the actual positions of the push heads on both sides of the push bench.
In this embodiment, the PLC controller and the laser range finder may be connected by a communication interface or a hard-wired analog quantity.
In this embodiment, according to the centering principle of the rolling mill push bench, the push heads on both sides of the push bench are equidistantly distributed on both sides of the central line of the rolling line, and the synchronous mechanism drives the push heads on both sides to open and close simultaneously, so that the moving distances of the push heads on both sides are equal. Based on the principle, the laser distance measuring device has the function of detecting whether the push heads on the two sides of the push bed are synchronous or not, when the push heads of the push bed are asynchronous, the laser distance measuring data on the two sides are deviated, and the asynchronous fault of the push heads on the two sides of the push bed can be prompted and alarmed.
The width system is surveyed to rolled piece for rolling mill manipulator that this embodiment provided, according to the characteristic that the relative equidistance of manipulator both sides pushing head synchronization removed, utilize laser range finder to detect the displacement volume of manipulator both sides pushing head when embracing the steel, calculate the actual width of rolled piece through the PLC controller, effectively avoided because the detection trouble that equipment striking vibrations caused, guaranteed the stability, the accuracy of manipulator width data of surveying, and then guaranteed the product quality precision, reduced equipment fault rate, reduced equipment maintenance cost.
One or more embodiments also provide a rolled piece width measuring method for a rolling mill push bench, which is realized based on the rolled piece width measuring system for the rolling mill push bench. As shown in fig. 3, the method comprises the steps of:
s101, acquiring push head displacement data of the operation side of the push bench and push head displacement data of the transmission side of the push bench.
Calibrating the aiming position of the laser range finder, indirectly obtaining the push head displacement data of the manipulator operation side through measuring the position of the laser alignment point by the laser range finder positioned on the manipulator operation side, and transmitting the push head displacement data to the PLC data acquisition system; measuring the push head displacement data of the transmission side of the push bench by a laser range finder positioned on the transmission side of the push bench, and transmitting the data to a PLC data acquisition system; the displacement data comprises an initial transmission side push head position, an initial operation side push head position, a transmission side push head position when holding the rolled piece and an operation side push head position when holding the rolled piece.
And S102, calculating the width of the rolled piece according to the push head displacement data of the operation side of the push bench or the push head displacement data of the transmission side of the push bench.
In the step 102, the method for calculating the width of the rolled piece according to the push head displacement data of the operation side of the push bench comprises the following steps:
W＝L-(LOS-LOS1-HOS)*2
wherein L is the maximum opening width of the manipulator; w is the width of the rolled piece; LOS is the push head position of the operation side; LOS1 is the push head position of the operating side when holding the rolled piece; HOS is the operating side ram thickness.
In the step 102, the method for calculating the width of the rolled piece according to the push head displacement data of the transmission side of the push bench comprises the following steps:
W＝L-(LDS-LDS1-HDS)*2
wherein L is the maximum opening width of the manipulator; w is the width of the rolled piece; LDS is the push head position of the transmission side; LDS1 is the push head position of the transmission side when holding the rolled piece; HDS is the thickness of the drive side ram.
And S103, displaying the width data of the rolled piece through a human-computer interaction interface.
One or more embodiments also provide a rolled piece width measuring method for a rolling mill push bench, which is realized based on the rolled piece width measuring system for the rolling mill push bench. As shown in fig. 3, the method comprises the steps of:
s201, acquiring push head displacement data of the operation side of the push bench and push head displacement data of the transmission side of the push bench.
Calibrating the aiming position of the laser range finder, indirectly obtaining the push head displacement data of the manipulator operation side through measuring the position of the laser alignment point by the laser range finder positioned on the manipulator operation side, and transmitting the push head displacement data to the PLC data acquisition system; measuring the push head displacement data of the transmission side of the push bench by a laser range finder positioned on the transmission side of the push bench, and transmitting the data to a PLC data acquisition system; the displacement data comprises an initial transmission side push head position, an initial operation side push head position, a transmission side push head position when holding the rolled piece and an operation side push head position when holding the rolled piece.
S202, judging whether the push head displacement data of the manipulator operation side and the push head displacement data of the manipulator transmission side have deviation or not; if yes, go to step 203; if there is no deviation, go to step 204.
And S203, displaying alarm prompt information through a human-computer interaction interface.
And S204, calculating the width of the rolled piece according to the push head displacement data of the operation side of the push bench or the push head displacement data of the transmission side of the push bench.
In step 204, the method for calculating the width of the rolled piece according to the push head displacement data of the manipulator operation side or the push head displacement data of the manipulator transmission side comprises the following steps:
W＝L-(LDS-LDS1-HDS)-(LOS-LOS1-HOS)
wherein L is the maximum opening width of the manipulator; w is the width of the rolled piece; LDS is the position of the transmission side pushing head; LOS is the push head position of the operation side; LDS1 is the position of the transmission side push head when holding the rolled piece; LOS1 is the operating side push head position when holding the rolled piece; HDS is the thickness of the transmission side push head; HOS is the operating side ram thickness.
According to the rolled piece width measuring method for the rolling mill push bed, the displacement of the push heads on the two sides of the push bed in steel holding is detected by the laser range finder according to the characteristic that the push heads on the two sides of the push bed synchronously move relatively at equal intervals, the actual width of the rolled piece can be calculated by adopting laser range data on one side, the actual width of the rolled piece can also be calculated by adopting laser range data on the two sides, the influence of severe vibration of the push bed on the precision of a measuring device can be effectively avoided, the width measuring stability of the rolling mill push bed is greatly improved, and the damage rate of equipment is reduced.
Although the present disclosure has been described with reference to specific embodiments, it should be understood that the scope of the present disclosure is not limited thereto, and those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the present disclosure.
Claims (9)
1. A rolled piece width measuring system for a rolling mill push bench is characterized by comprising laser range finders arranged on two sides of the push bench, a laser alignment plate arranged on an operation side push head, a laser alignment plate arranged on a transmission side push head and a PLC data acquisition system; the laser range finder obtains displacement data of the operating side push head and the transmission side push head by measuring the displacement data of the laser alignment plate, and transmits the measured displacement data to the PLC data acquisition system, and the PLC data acquisition system calculates the width of the rolled piece according to the received displacement data of the operating side push head and the transmission side push head;
the displacement data of the operation side pushing head and the transmission side pushing head comprise an initial transmission side pushing head position, an initial operation side pushing head position, a transmission side pushing head position when the rolled piece is held and an operation side pushing head position when the rolled piece is held.
2. A rolled piece width measuring system for a rolling mill push bench as defined in claim 1 wherein the laser rangefinder is disposed opposite the laser alignment plate on the same side thereof and the centers of the laser rangefinder and the laser alignment plate are on the same horizontal line.
3. A rolled member width measuring system for a rolling mill push bench as defined in claim 1 wherein said laser alignment plate is welded at an intermediate location on the push head guide plate.
4. The rolled piece width measuring system for the rolling mill push bench as claimed in claim 1, wherein the PLC data acquisition system comprises a PLC controller, a communication module and a human-computer interaction interface, the PLC controller compares whether the displacement of the operation side push head and the displacement of the transmission side push head have deviation, and if yes, the human-computer interaction interface prompts an alarm; if not, calculating the width of the rolled piece according to the received displacement data of the operating side pushing head and the transmission side pushing head, and displaying the width on a human-computer interaction interface.
5. A rolled piece width measuring method for a rolling mill push bench, which is realized based on a rolled piece width measuring system for a rolling mill push bench according to any one of claims 1 to 4, characterized by comprising the steps of:
calibrating the aiming position of the laser range finder;
measuring displacement data of the operating side pushing head and the transmission side pushing head; the displacement data comprises an initial transmission side push head position, an initial operation side push head position, a transmission side push head position when holding the rolled piece and an operation side push head position when holding the rolled piece;
and calculating the width of the rolled piece according to the displacement data of the operating side pushing head or the displacement data of the transmission side pushing head.
6. A rolled product width measuring method for a rolling mill push bench as defined in claim 5 wherein the method of calculating the rolled product width from the displacement data of the operating side push heads is:
calculating the difference value between the push head position value of the operation side and the push head thickness of the operation side when the rolled piece is held, so as to obtain the displacement of the push head of the operation side;
and (4) subtracting the maximum opening width of the manipulator from the double value of the displacement of the operating side pushing head to obtain the width of the rolled piece.
7. A rolled piece width measuring method for a rolling mill push bench as defined in claim 5 wherein the method of calculating the rolled piece width from the displacement data of the drive side push head is:
calculating the difference value between the push head position value of the transmission side and the thickness of the push head of the transmission side when the rolled piece is held, and obtaining the displacement of the push head of the transmission side;
and (4) subtracting the maximum opening width of the pusher from the double value of the displacement of the transmission side pusher to obtain the width of the rolled piece.
8. A rolled piece width measuring method for a rolling mill push bench, which is realized based on a rolled piece width measuring system for a rolling mill push bench according to any one of claims 1 to 4, characterized by comprising the steps of:
calibrating the aiming position of the laser range finder;
measuring displacement data of the operating side pushing head and the transmission side pushing head; the displacement data comprises an initial transmission side push head position, an initial operation side push head position, a transmission side push head position when holding the rolled piece and an operation side push head position when holding the rolled piece;
comparing the displacement of the operating side pushing head with the displacement of the transmission side pushing head to determine whether an error exists, and if so, prompting an alarm; and if the width of the rolled piece does not exist, calculating the width of the rolled piece according to the displacement data of the operating side pushing head and the displacement data of the transmission side pushing head.
9. A rolled piece width measuring method for a rolling mill push bench as defined in claim 8 wherein the rolled piece width is calculated by:
calculating the difference value between the push head position value of the operation side and the push head thickness of the operation side when the rolled piece is held, so as to obtain the displacement of the push head of the operation side;
calculating the difference value between the push head position value of the transmission side and the thickness of the push head of the transmission side when the rolled piece is held, and obtaining the displacement of the push head of the transmission side;
and respectively differentiating the maximum opening width of the manipulator with the displacement of the operating side pushing head and the displacement of the transmission side pushing head to obtain the width of the rolled piece.
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| CN201811592021.1A CN109759458B (en) | 2018-12-25 | 2018-12-25 | Rolled piece width measuring system and method for rolling mill push bench |
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| CN113275392B (en) * | 2020-02-20 | 2022-06-28 | 宝山钢铁股份有限公司 | Full-automatic calibration method for opening degree of side guide plate of heavy and medium plate mill |
| CN112264982B (en) * | 2020-09-24 | 2023-04-07 | 彩虹集团有限公司 | Automatic length measuring and scribing device and method for plate blank |
| CN112747679A (en) * | 2020-12-23 | 2021-05-04 | 河南中原光电测控技术有限公司 | Width measuring device, width measuring method, and computer-readable medium storing width measuring program |
| CN113275390B (en) * | 2021-04-19 | 2023-04-14 | 晟通科技集团有限公司 | Aluminum strip blank width measuring system and method, electronic device and storage medium |
| CN113732079B (en) * | 2021-07-27 | 2023-10-27 | 石钢京诚装备技术有限公司 | Calibrating method for pushing bed of cogging mill |
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| JP3427493B2 (en) * | 1994-06-29 | 2003-07-14 | Ｊｆｅスチール株式会社 | Method and apparatus for measuring width of parallel steel sheets |
| KR100711408B1 (en) * | 2005-12-24 | 2007-04-30 | 주식회사 포스코 | Device for on-line measuring width of strip |
| CN201046468Y (en) * | 2007-06-15 | 2008-04-16 | 中国第一重型机械集团公司 | Strong forced pushing bed |
| CN201166545Y (en) * | 2007-12-19 | 2008-12-17 | 攀枝花新钢钒股份有限公司 | Galvanized wire strip steel width on-line detection device |
| CN101811140B (en) * | 2009-02-20 | 2011-12-21 | 上海梅山钢铁股份有限公司 | Method for width measurement and centering of rough rolling slab in hot rolling mill |
| CN104406518B (en) * | 2014-11-14 | 2017-01-25 | 中国科学院上海光学精密机械研究所 | Large size laser neodymium glass cladding size and angle non-contact detection device and method |
| CN205816415U (en) * | 2016-06-30 | 2016-12-21 | 韩宪伟 | A kind of rolled steel belt width tester |
| CN107091612A (en) * | 2017-05-19 | 2017-08-25 | 常州工学院 | A kind of width of plate slab device for dynamically detecting based on FPGA and laser triangulation |
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