A method for measuring, analyzing and adjusting the accuracy of the inner arch of a twenty-high rolling mill

Abstract

An embodiment of the present application provides a method for measuring, analyzing, and adjusting the accuracy of the inner arch of a twenty-high rolling mill. The method includes: obtaining at least three characteristic points on the intersecting arc of a first plane and each arc-shaped surface of the inner arch's plum blossom holes, and obtaining at least three characteristic points on the intersecting arc of a second plane and each arc-shaped surface of the inner arch's plum blossom holes; analyzing and simulating the coordinate data of the centers of circles corresponding to each intersecting arc on the first plane and the second plane based on the coordinate data of each characteristic point, and determining the spatial data of the lines connecting each center of the circle; analyzing the absolute position deviation of each arch compared to the center line of the unit and the relative position deviation with the upper and lower inner arches based on the model established based on the spatial data of each line connecting the centers of the circle in the two planes, and adjusting the horizontal, vertical, and translational or torsional position accuracy of the upper and lower inner arches based on the deviation data. The present application can effectively and accurately adjust the position accuracy of the upper and lower inner arches of a twenty-high rolling mill.

Description

Technical Field

[0001] The present application relates to the technical field of rolling mills, and in particular to a method for measuring, analyzing and adjusting the accuracy of a roller bearing in a twenty-high rolling mill. Background Art

[0002] The upper and lower rolls of a twenty-high mill are placed on the upper and lower inner arches, respectively. The inner arches act as special bearing seats spanning the WS and DS sides. During installation, the inner arches are embedded between the two outer arches and cannot be removed. The rolling centerline cannot be measured through it, and the window liner cannot be exposed. The special dual-roll adjustment device, while adjusting the roll level, also affects the crossover of the rolls, ultimately affecting the strip shape quality. Therefore, precision management of the twenty-high mill arches is a top priority in the operation and maintenance of the unit equipment. Accurately measuring and adjusting the relative position of the arches is an absolute key point.

[0003] Therefore, those skilled in the art are in urgent need of a method for measuring and analyzing the accuracy of the inner arches of a twenty-high rolling mill to accurately adjust the position accuracy of the upper and lower inner arches of the twenty-high rolling mill. Summary of the Invention

[0004] The embodiments of the present application provide a method for measuring, analyzing and adjusting the accuracy of the inner arch of a twenty-high rolling mill, which can effectively and accurately adjust the position accuracy of the upper and lower inner arches of the twenty-high rolling mill to a certain extent.

[0005] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by practice of the present application.

[0006] According to one aspect of the present application, a method for measuring, analyzing and adjusting the accuracy of the inner arch of a twenty-high rolling mill is provided, wherein the inner arch includes an upper inner arch and a lower inner arch, and the method includes: taking the rolling center line of the unit where the inner arch is located as the x-axis, the symmetry axis of the outer arch where the inner arch is located as the y-axis, and the intersection of the rolling center line and the symmetry axis as the coordinate zero point to establish a three-dimensional coordinate system; determining a first plane and a second plane both perpendicular to the z-axis in the three-dimensional coordinate system, obtaining at least three feature points on the intersection arc of the first plane and the arc surfaces of the plum blossom holes of the inner arch, and obtaining the second plane. At least three feature points are located on the arc lines that intersect with the arc surfaces of the plum blossom holes of the inner archway; based on the coordinate data of each feature point on the first plane and the second plane, the coordinate data of the center of each intersecting arc line on the first plane and the second plane are analyzed and simulated, and the spatial data of the line connecting the center of each arc surface of the inner archway are determined; based on the spatial data of the line connecting the center of the circle between the first plane and the second plane, the absolute position deviation and relative position deviation data of the upper and lower inner archways in the coordinate system are analyzed, and the horizontal, vertical and translational or torsional position accuracy of the upper inner archway and the lower inner archway are adjusted.

[0007] In some embodiments of the present application, a total station and a laser tracker are used to establish a three-dimensional coordinate system with the rolling center line of the unit where the inner arch is located as the x-axis, the symmetry axis of the outer arch where the inner arch is positioned as the y-axis, and the intersection of the rolling center line and the symmetry axis as the coordinate zero point.

[0008] In some embodiments of the present application, the distance between the first plane and the second plane is 1 m.

[0009] In some embodiments of the present application, the plum blossom hole of the inner archway includes 8 arc-shaped surfaces.

[0010] In some embodiments of the present application, the coordinate data of the center of the circle corresponding to each intersecting arc on the first plane and the second plane are analyzed and simulated according to the coordinate data of each feature point on the first plane and the second plane, including: analyzing and simulating the positions of 16 center of circles corresponding to 16 intersecting arcs on the first plane and the second plane according to the coordinate data of each feature point on the first plane and the second plane; on the first plane, the eight centers of circles are determined as points A, B, C, D, E, F, G, and H in a clockwise direction, and the coordinate data of points A, B, C, D, E, F, G, and H in the three-dimensional coordinate system are obtained; on the second plane, the eight centers of circles are determined as points a, b, c, d, e, f, g, and h in a clockwise direction, and the coordinate data of points a, b, c, d, e, f, g, and h in the three-dimensional coordinate system are obtained. The upper inner archway includes A, B, C, D and a, b, c, d, which belong to the same whole; the lower inner archway includes E, F, G, H and e, f, g, h, which belong to the same whole. The position deviation of the inner archway is adjusted based on the analysis of the deviation trend of the overall data of the upper and lower inner archways.

[0011] In some embodiments of the present application, the absolute position deviation and relative position deviation data of the upper and lower inner archways in the coordinate system are analyzed based on the spatial data of the line connecting the centers of the circle between the first plane and the second plane, and the horizontal, vertical and translational or torsional position accuracy of the upper and lower inner archways are adjusted, including: obtaining the spatial data of points A, B, C, D, E, F, G, H and a, b, c, d, e, f, g, h; determining the deviation data of the heights of points A, B, C, D, E, F, G, H and a, b, c, d, e, f, g, h in the y-axis direction in the three-dimensional coordinate system; according to the fact that the upper inner archway contains A, B, C, D and a, b, c, d, which belong to the same whole, and the lower inner archway contains E, F, G, H and e, f, g, h, which belong to the same whole, and according to the height deviation data of the y-axis in the three-dimensional coordinate system according to the deviation trend of the overall data of the upper and lower inner archways, the horizontal position accuracy of the upper inner archway or the lower inner archway in the coordinate system is adjusted.

[0012] In some embodiments of the present application, the absolute position deviation and relative position deviation data of the upper and lower inner archways in the coordinate system are analyzed based on the spatial data of the line connecting the centers of the circle between the first plane and the second plane, and the horizontal, vertical and translational or torsional position accuracy of the upper and lower inner archways are adjusted, including: obtaining the spatial data of points A, B, C, D, E, F, G, H and a, b, c, d, e, f, g, h; determining the deviation data of the angles of the axes Aa, Bb, Cc, Dd, Ee, Ff, Gg, Hh in the z-axis or the line parallel to the z-axis of the three-dimensional coordinate system; adjusting the vertical position accuracy of the upper and lower inner archways in the coordinate system according to the deviation data of the angles of the axes Aa, Bb, Cc, Dd, Ee, Ff, Gg, Hh and the z-axis or the line parallel to the z-axis of the three-dimensional coordinate system.

[0013] In some embodiments of the present application, the absolute position deviation and relative position deviation data of the upper and lower inner archways in the coordinate system are analyzed based on the spatial data of the line connecting the centers of the circle between the first plane and the second plane, and the horizontal, vertical and translational or torsional position accuracy of the upper and lower inner archways and the lower inner archway are adjusted, including: calculating the length difference between the first plane AE and DH and the length difference between the second planes ae and dh; adjusting the displacement or deflection position accuracy of the upper inner archway or the lower inner archway according to the difference in the lengths of the centers of the two sets of planes.

[0014] Based on the above solution, this application has at least the following advantages or improvements:

[0015] The present application provides a method for adjusting the accuracy of the inner arch of a twenty-high rolling mill. By establishing a three-dimensional coordinate system, multiple feature points of the upper and lower inner arches of the twenty-high rolling mill are located, thereby positioning each arc surface of the plum blossom hole. The upper inner arch includes A, B, C, D and a, b, c, d, which are a whole. The lower inner arch includes E, F, G, H and e, f, g, h, which are a whole. According to the deviation trend of the overall data of the upper and lower inner arches, the horizontal and vertical positions of the upper and lower inner arches are adjusted, and finally the position accuracy of the inner arch of the twenty-high rolling mill is adjusted. According to the continuous accumulation of measurement system data, on the premise of stable data accuracy, the operation and maintenance work of the equipment maintenance is greatly facilitated.

[0016] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are incorporated into and constitute a part of the specification, illustrating embodiments consistent with the present application and, together with the specification, explaining the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can derive other drawings based on these drawings without inventive effort. In the drawings:

[0018] Figure 1 A simplified flow chart of a method for measuring, analyzing, and adjusting the horizontal position accuracy of a housing in a twenty-high rolling mill in one embodiment of the present application is shown;

[0019] Figure 2 A simplified flow chart of a method for measuring, analyzing, and adjusting the vertical position accuracy of a roller arch in a twenty-high rolling mill according to an embodiment of the present application is shown;

[0020] Figure 3 A simplified flow chart of a method for measuring, analyzing, and adjusting the displacement or deflection position accuracy of a housing in a twenty-high rolling mill in one embodiment of the present application is shown;

[0021] Figure 4 A simplified flow chart showing a method for data analysis and verification of the internal arch accuracy of a twenty-high rolling mill in one embodiment of the present application is provided;

[0022] Figure 5 A three-dimensional model of a twenty-high rolling mill in one embodiment of the present application is shown;

[0023] Figure 6 A simplified diagram of a first plane in one embodiment of the present application is shown. DETAILED DESCRIPTION

[0024] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art.

[0025] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner.In the following description, many specific details are provided so as to provide a full understanding of the embodiments of the present application. However, it will be appreciated by those skilled in the art that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps etc. can be adopted. In other cases, known methods, devices, implementations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0026] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically separate entities. That is, these functional entities may be implemented in software, in one or more hardware modules, or in different networks and / or processor devices and / or microcontroller devices.

[0027] The flowcharts shown in the accompanying drawings are for illustrative purposes only and do not necessarily include all contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps may be decomposed, while others may be combined or partially combined. Therefore, the actual execution order may vary depending on the actual situation.

[0028] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described.

[0029] See also Figure 1 , Figure 1 A simplified flow chart of a method for adjusting the horizontal position accuracy of the inner arch of a twenty-high rolling mill in one embodiment of the present application is shown. The inner arch includes an upper inner arch and a lower inner arch. The method may include steps S101-S106:

[0030] Step S101, establish a three-dimensional coordinate system with the rolling center line of the unit where the inner arch is located as the x-axis, the symmetry axis of the outer arch where the inner arch is located as the y-axis, and the intersection of the rolling center line and the symmetry axis as the coordinate zero point.

[0031] Step S102: determine a first plane and a second plane both perpendicular to the z-axis in the three-dimensional coordinate system, obtain at least three feature points on the intersecting arc line of the first plane and the arc surfaces of the plum blossom holes of the inner archway, and obtain at least three feature points on the intersecting arc line of the second plane and the arc surfaces of the plum blossom holes of the inner archway.

[0032] Step S103: On the first plane, determine the centers of the eight circles as points A, B, C, D, E, F, G, and H in a clockwise direction, and obtain the coordinate data of points A, B, C, D, E, F, G, and H in the three-dimensional coordinate system.

[0033] Step S104: On the second plane, determine the eight circle centers as points a, b, c, d, e, f, g, and h in a clockwise direction, and obtain the coordinate data of points a, b, c, d, e, f, g, and h in the three-dimensional coordinate system.

[0034] Step S105 , analyzing and simulating the coordinate data of the centers of the intersecting arcs on the first plane and the second plane based on the coordinate data of the feature points on the first plane and the second plane.

[0035] Step S106: Analyze the absolute position deviation of the upper and lower inner archways in the y-axis direction in the coordinate system based on the spatial data of the centers of each circle in the first plane and the second plane, and adjust the horizontal position accuracy of the upper and lower inner archways.

[0036] In one embodiment of the present application, a total station and a laser tracker can be used to establish a three-dimensional coordinate system with the rolling center line of the unit where the inner arch is located as the x-axis, the symmetry axis of the outer arch where the inner arch is positioned as the y-axis, and the intersection of the rolling center line and the symmetry axis as the coordinate zero point.

[0037] In one embodiment of the present application, the distance between the first plane and the second plane is 1 m.

[0038] In one embodiment of the present application, the plum blossom hole of the inner archway includes 8 arc-shaped surfaces.

[0039] See also Figure 2 , Figure 2 A simplified flowchart of a method for measuring, analyzing, and adjusting the vertical position accuracy of a housing in a twenty-high rolling mill according to an embodiment of the present application is shown. The method of analyzing and simulating the coordinate data of the centers of the circles corresponding to the intersecting arcs on the first and second planes based on the coordinate data of the characteristic points on the first and second planes may include steps S201-S203:

[0040] Step S201, obtaining the spatial data of points A, B, C, D, E, F, G, H and a, b, c, d, e, f, g, h according to the above;

[0041] Step S202, determining deviation data of angles between the axes Aa, Bb, Cc, Dd, Ee, Ff, Gg, and Hh and the z-axis or a line parallel to the z-axis in the three-dimensional coordinate system;

[0042] Step S203: Adjust the vertical position accuracy of the upper inner archway and the lower inner archway in the coordinate system according to the deviation data of the angles between the axes Aa, Bb, Cc, Dd, Ee, Ff, Gg, and Hh and the z axis or the line parallel to the z axis of the three-dimensional coordinate system.

[0043] See also Figure 3 , Figure 3A simplified flowchart of a method for adjusting the displacement or deflection position accuracy of an inner arch of a twenty-high rolling mill in one embodiment of the present application is shown. The method for adjusting the displacement or deflection position accuracy of the upper inner arch or the lower inner arch based on spatial data of lines connecting the centers of circles in the first plane may include steps S301-S303:

[0044] Step S301, obtain the spatial data of points A, B, C, D, E, F, G, H and a, b, c, d, e, f, g, h according to the above.

[0045] Step S302: Calculate the length difference between the first plane AE and DH and the length difference between the second plane ae and dh.

[0046] Step S303: adjusting the displacement or deflection position accuracy of the upper inner archway or the lower inner archway according to the difference between the two sets of plane center lengths.

[0047] In the present application, within the first plane, the degree of offset between the upper and lower inner archways can be determined by the length relationship between the line segments AE, DH or ae, dh.

[0048] For example, by calculating that Aa and Dd are symmetrical relative to the coordinate y-axis, and AE is greater than DH, it can be proved that the lower inner archway is offset relative to the upper inner archway. It can be further determined that the lower inner archway is offset relative to the upper inner archway toward the side where point D is located. Technical personnel in this field can use this as a basis to adjust the position accuracy of the lower inner archway.

[0049] See also Figure 4 , Figure 4 A simplified flow chart of a method for analyzing and verifying the accuracy data of the inner arches of a twenty-high rolling mill in one embodiment of the present application is shown. The method for verifying the position accuracy of the upper inner arch and the lower inner arch in the coordinate system based on the center space data and the center line difference data between the first plane and the second plane may include steps S401-S403:

[0050] Step S401: Acquire the spatial data of Aa, Bb, Cc, Dd, Ee, Ff, Gg, and Hh.

[0051] Step S402 , determining by data conversion whether the distances between the two groups of data (A, B, C, D compared to H, G, F, E) and the two groups of data (a, b, c, d compared to h, g, f, e) and the x-axis of the three-dimensional coordinate system are symmetrical.

[0052] Step S403 , determining through data conversion whether the distances between the two groups of data (A, B, H, G vs. C, D, F, E) and the two groups of data (a, b, h, g vs. c, d, f, e) and the y-axis of the three-dimensional coordinate system are symmetrical.

[0053] Step S404 , determining through data conversion whether the distances between the two sets of axis data, Aa, Bb vs. Cc, Dd, and Ee, Ff vs. Gg, Hh, and the z-axis of the three-dimensional coordinate system are symmetrical.

[0054] The position accuracy of the upper inner archway or the lower inner archway is verified based on the correspondence between Aa, Bb, Cc, Dd, Ee, Ff, Gg, Hh and the axes of the three-dimensional coordinate system.

[0055] In order to enable those skilled in the art to have a deeper understanding of this solution, a complete embodiment will be described below.

[0056] See also Figure 5 , Figure 5 FIG. 3 shows a three-dimensional model of a twenty-high rolling mill in one embodiment of the present application. In this embodiment, a total station can be used to establish a three-dimensional coordinate system for the twenty-high rolling mill. Figure 5 As shown, a three-dimensional coordinate system is established for a twenty-high rolling mill 502 using a total station 501 .

[0057] See also Figure 6 , Figure 6 A simplified diagram of the first plane in one embodiment of the present application is shown, Figure 6 As shown, the horizontal offset between the upper and lower inner archways can be determined based on the length relationship between the line segments AE and DH.

[0058] Those skilled in the art will readily conceive of other embodiments of the present application after considering the specification and practicing the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of this application and include common knowledge or customary techniques in the art that are not disclosed herein.

[0059] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A method for measuring, analyzing and adjusting the accuracy of the inner arch of a twenty-high rolling mill, characterized in that: The inner memorial archway includes an upper inner memorial archway and a lower inner memorial archway, and the method includes: A three-dimensional coordinate system is established with the rolling center line of the unit where the inner arch is located as the x-axis, the symmetry axis of the outer arch where the inner arch is located as the y-axis, and the intersection of the rolling center line and the symmetry axis as the coordinate zero point; Determine a first plane and a second plane both perpendicular to the z-axis in the three-dimensional coordinate system, obtain at least three feature points on an arc line intersecting the first plane and each arcuate surface of the plum blossom hole of the inner memorial archway, and obtain at least three feature points on an arc line intersecting the second plane and each arcuate surface of the plum blossom hole of the inner memorial archway; Analyze and simulate the coordinate data of the centers of the intersecting arcs on the first plane and the second plane based on the coordinate data of each feature point on the first plane and the second plane, and determine the spatial data of the lines connecting the centers of the arc surfaces of the inner archway; Analyzing the absolute position deviation and relative position deviation data of the upper and lower inner archways in the coordinate system based on the spatial data of the line connecting the centers of the circle between the first plane and the second plane, and adjusting the horizontal, vertical, translational or torsional position accuracy of the upper and lower inner archways; The plum blossom hole of the inner archway includes 8 arc-shaped surfaces; Wherein, the coordinate data of the center of each intersecting arc on the first plane and the second plane are analyzed and simulated according to the coordinate data of each feature point on the first plane and the second plane, including: analyzing and simulating the positions of 16 centers of circles corresponding to 16 intersecting arcs on the first plane and the second plane according to the coordinate data of each feature point on the first plane and the second plane; determining the 8 centers of circles as points A, B, C, D, E, F, G, and H in clockwise order on the first plane, and obtaining the coordinate data of the centers of circles A, B, C, D , E, F, G, H in the three-dimensional coordinate system; on the second plane, determine the eight center points as points a, b, c, d, e, f, g, h in a clockwise direction, and obtain the coordinate data of points a, b, c, d, e, f, g, h in the three-dimensional coordinate system; the upper inner archway includes A, B, C, D and a, b, c, d, which belong to the same whole, and the lower inner archway includes E, F, G, H and e, f, g, h, which belong to the same whole. According to the deviation trend of the overall data of the upper and lower inner archways, adjust the position deviation of the inner archways; Among them, the absolute position deviation and relative position deviation data of the upper and lower inner archways in the coordinate system are analyzed according to the spatial data of the line connecting the centers of the circle between the first plane and the second plane, and the horizontal, vertical and translational or torsional position accuracy of the upper and lower inner archways are adjusted, including: obtaining the spatial data of A, B, C, D, E, F, G, H and points a, b, c, d, e, f, g, h; determining the deviation data of the angles of the axes Aa, Bb, Cc, Dd, Ee, Ff, Gg, Hh in the z-axis of the three-dimensional coordinate system or the line parallel to the z-axis; adjusting the vertical position accuracy of the upper and lower inner archways in the coordinate system according to the deviation data of the angles of the axes Aa, Bb, Cc, Dd, Ee, Ff, Gg, Hh and the z-axis of the three-dimensional coordinate system or the line parallel to the z-axis.

2. The method according to claim 1, characterized in that A three-dimensional coordinate system is established using a total station and a laser tracker, with the rolling center line of the unit where the inner arch is located as the x-axis, the symmetry axis of the outer arch where the inner arch is located as the y-axis, and the intersection of the rolling center line and the symmetry axis as the coordinate zero point.

3. The method according to claim 1, characterized in that The distance between the first plane and the second plane is 1 m.

4. The method according to claim 1, wherein The step of analyzing the absolute position deviation and relative position deviation data of the upper and lower inner archways in the coordinate system based on the spatial data of the line connecting the centers of the circle between the first plane and the second plane, and adjusting the horizontal, vertical, translational, or torsional position accuracy of the upper and lower inner archways includes: Get the spatial data of points A, B, C, D, E, F, G, H and a, b, c, d, e, f, g, h; Determine the deviation data of the heights of points A, B, C, D, E, F, G, H and a, b, c, d, e, f, g, h in the y-axis direction in the three-dimensional coordinate system; According to the fact that the upper inner archway contains A, B, C, D and a, b, c, d belong to the same whole, and the lower inner archway contains E, F, G, H and e, f, g, h belong to the same whole, and according to the height deviation data of the y-axis in the three-dimensional coordinate system in accordance with the deviation trend of the overall data of the upper and lower inner archways, the horizontal position accuracy of the upper inner archway or the lower inner archway in the coordinate system is adjusted.

5. The method according to claim 1, characterized in that The step of analyzing the absolute position deviation and relative position deviation data of the upper and lower inner archways in the coordinate system based on the spatial data of the line connecting the centers of the circle between the first plane and the second plane, and adjusting the horizontal, vertical, translational, or torsional position accuracy of the upper and lower inner archways includes: Calculate the length difference between the first plane AE and DH and the length difference between the second plane ae and dh; The displacement or deflection position accuracy of the upper inner archway or the lower inner archway is adjusted according to the difference in the lengths of the center points of the two sets of planes.

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