Rolling mill roll system comprehensive precision adjusting method based on laser and infrared cooperative measurement

Abstract

The invention relates to the technical field of rolling mill manufacturing and maintenance, and discloses a rolling mill roll system comprehensive precision adjustment method based on laser and infrared cooperative measurement, which combines a laser tracking measurement system and an infrared centering instrument, and performs cooperative measurement and adjustment by using the advantages of the laser tracking measurement system and the infrared centering instrument. Performing multi-point measurement on the roll surface of the roll system by using a laser tracker, and collecting levelness and perpendicularity data of the roll surface; meanwhile, the infrared centering instrument is used for measuring the coaxiality data of the transmission device. Collected data are processed through SA space three-dimensional software, a roller surface is fitted to be a cylinder, a center line is generated, and a three-dimensional rectangular coordinate system is established. The levelness and perpendicularity of the roller system are analyzed according to measured data, and the purpose of adjustment is achieved by adjusting a bearing seat gasket. The coaxiality of the transmission device is analyzed by using data of the infrared centering instrument and the laser tracker, and the coaxiality is corrected by adjusting the position of the bearing seat on the transmission side.

Description

Technical Field

[0001] The invention relates to the technical field of rolling mill manufacturing and maintenance, and in particular to a rolling mill roll system comprehensive accuracy adjustment method based on laser and infrared collaborative measurement. Background Art

[0002] In industrial equipment, the misalignment of the drive shaft in the transmission system may cause the equipment to run unsteadily or fail. When the speed is high, the equipment vibration increases and the operating stability decreases. Therefore, it is very important to detect and adjust the misalignment of the drive shaft. The traditional method is usually to calibrate the machine manually, but the process is cumbersome and easy to introduce measurement errors, resulting in low overall efficiency and low accuracy.

[0003] In order to detect the various performance indicators of the transmission system, traditional measurement methods usually need to be carried out step by step, including vibration detection, horizontality, verticality, and coaxiality of the transmission device, etc. Since these detection processes are complicated and the adjustments between each link require multiple back-and-forth operations, it not only wastes time, but also easily leads to the accumulation of measurement errors, which in turn affects the adjustment effect and the overall performance of the equipment.

[0004] Conventional detection and adjustment methods have defects in the following aspects: first, the efficiency of measuring data collection is low, and it is difficult to quickly obtain comprehensive measurement information; second, the cumbersomeness of manual operation leads to reduced calibration efficiency, and manual measurement is prone to introduce errors; third, the traditional adjustment method is carried out in a step-by-step manner, and often can only adjust a single parameter, making it difficult to coordinate the synergy between single detection and overall adjustment, and it is difficult to optimize the transmission system in one go, which ultimately leads to long adjustment time, high labor and difficulty in effectively ensuring accuracy.

[0005] Therefore, we propose a comprehensive precision adjustment method for the rolling mill roll system based on laser and infrared collaborative measurement to solve the problems in the above background. Summary of the invention

[0006] The purpose of the present invention is to provide a comprehensive precision adjustment method for a rolling mill roll system based on laser and infrared collaborative measurement, so as to solve the problem proposed in the above background technology that the horizontality, verticality and coaxiality of the roll system and the transmission device cannot be adjusted at the same time in the traditional measurement and adjustment method.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] The method for adjusting the comprehensive precision of a rolling mill roll system based on laser and infrared collaborative measurement includes the following steps:

[0009] S1. Equipment installation: Install a laser tracker on the roll side and an infrared alignment instrument on the driving and driven shafts of the transmission device to ensure the stability of the equipment;

[0010] S2. Data collection: Use a laser tracker to collect data at multiple points on the roll surface, and at the same time take points on the driven shaft and the drive side liner, and use an infrared alignment instrument to measure the vertical deviation;

[0011] S3. Data processing: Use 3D modeling software to process the roller surface data, fit the cylinder and establish a 3D coordinate system to determine the center line of the design point;

[0012] S4. Horizontal adjustment: Calculate the horizontal height difference based on the measured data and adjust the bearing seat gasket on the transmission side to correct the horizontality;

[0013] S5. Vertical adjustment: Calculate the vertical deviation based on the measured data and correct the verticality by adjusting the lateral displacement of the bearing seat on the transmission side;

[0014] S6. Dynamic calibration: Use the measuring ball as a reference point during the adjustment process, monitor the coordinate changes in real time, simulate the motion trajectory, and ensure that the adjustment accuracy meets the requirements.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0016] The present invention innovatively combines a laser tracker and an infrared alignment instrument to propose a set of efficient and accurate detection and adjustment methods, solving the problem that the horizontality, verticality and coaxiality of the roller system and the transmission device cannot be adjusted at one time in the traditional measurement and adjustment method. Specifically, its technical effects are mainly reflected in the following aspects: this method does not require traditional manual step-by-step measurement, but simultaneously obtains the horizontality, verticality and coaxiality data of the rolling mill roller system through a laser tracker and an infrared alignment instrument, and then uses SA space three-dimensional software to fit the data, establish a three-dimensional coordinate system, simulate the motion trajectory, and make overall adjustments, thereby achieving one-time efficient adjustment, greatly improving the adjustment efficiency and accuracy, significantly reducing the adjustment time and labor intensity, and solving the high error problem caused by traditional step-by-step adjustment. The working principle is: set up a laser tracker and an infrared alignment instrument, measure the geometric parameters of the roller system and the transmission device respectively, determine the parameters that need to be adjusted through mathematical modeling, simulate the motion trajectory of the adjustment process, and then confirm the adjustment effect through multiple tests, and finally achieve accurate synchronous adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of vertical levelness correction and adjustment of the present invention;

[0018] Figure 2 It is a schematic diagram of the pitch verticality correction adjustment of the present invention.

[0019] Among them: 1. Center point 1; 2. Center point 2; 3. Center point 3; 4. Distance L 1; 5. Distance L 2 ; 6. Distance H 1 ; 7. Distance L; 8. Distance H 2 ; 9. Distance S 1 ; 10. Rolling center line. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Embodiment 1:

[0022] See also Figure 1-2 , the present invention provides a technical solution:

[0023] The comprehensive precision adjustment method of the rolling mill roll system based on laser and infrared collaborative measurement measures the horizontality and verticality data of the roll system by a laser tracker, measures the coaxiality data of the transmission device by an infrared alignment instrument, simulates the motion trajectory, and establishes a mathematical model. It specifically includes the following 6 steps: Step 1, on-site installation of the laser tracker and the infrared alignment instrument; Step 2, collecting measurement data; Step 3, processing the collected data; Step 4, adjusting the horizontality; Step 5, adjusting the verticality; Step 6, performing dynamic calibration;

[0024] Equipment and instruments used to perform the detection, analysis and adjustment methods of the horizontality, verticality and coaxiality of the roller system and the transmission device based on the laser tracker and infrared alignment instrument, including the following equipment: laser tracker, infrared alignment instrument, 3D measurement software, measuring ball, etc.;

[0025] The laser tracker is used to measure the horizontality and verticality of the roller system with high precision. The infrared alignment instrument is used to measure the coaxiality data of the transmission device. The three-dimensional measurement software can be SA space three-dimensional software, which is used for data processing, fitting and establishing a three-dimensional rectangular coordinate system. The measuring ball is used as a reference point to simulate the motion trajectory during the adjustment process.

[0026] Further measuring equipment and instruments also include bearing seat hole center measuring tools, coupling radius measuring tools, position sensitive sensors, data acquisition equipment, data processing and computing equipment and calibration tools.

[0027] The bearing housing bore center measuring tool is used to measure the center point of the bearing housing bore. The coupling radius measuring tool is used to measure the radius of the coupling. The position sensitive sensor is used for the infrared alignment instrument and is fixed on the driving and driven shafts of the transmission.

[0028] The data acquisition equipment is used to collect the measurement data of the laser tracker and infrared alignment instrument.

[0029] Tools and equipment for installing laser trackers and infrared alignment instruments, including fixed platforms, brackets, etc. Data processing and computing equipment can be computers, which are used to process and analyze measurement data.

[0030] An adjustment tool for adjusting the horizontality, verticality and coaxiality of a roller system and a transmission device according to measurement results includes a gasket.

[0031] The calibration tool is used to calibrate the accuracy of laser trackers and infrared alignment instruments.

[0032] Through the joint operation of the above-mentioned equipment and instruments, the detection, analysis and adjustment process of the horizontality, verticality of the roller system and the coaxiality of the transmission device can be carried out efficiently and accurately.

[0033] Furthermore, in step one, a laser tracker is installed on the roller side, and an infrared alignment instrument is installed on the driving shaft and the driven shaft of the transmission device. The laser tracker is fixed to a stable platform on one side of the roller, and the laser transmitter and position sensitive sensor of the infrared alignment instrument are respectively fixed vertically on the driving shaft and the driven shaft of the transmission device.

[0034] By setting up a laser tracker and an infrared alignment instrument on site, the laser tracker is set up on one side of the roller. The setting site is required to be a fixed platform with no heavy transport vehicles traveling nearby. The laser transmitter and position sensitive sensor of the infrared alignment instrument are vertically fixed on the driving shaft and driven shaft of the transmission device respectively.

[0035] Furthermore, in step 2, a laser tracker is used to collect data at multiple points on the roller surface, and points are taken on the driven shaft and the driving side liner at the same time, and an infrared alignment instrument is used to measure the deviation in the vertical direction. Nine data points are collected at both ends of the driving side and the operating side of the roller surface, and the measuring points are evenly distributed along the circumference of the roller surface. The infrared alignment instrument is used to measure the indication error in the vertical direction between the driven shaft and the rolling center line (10).

[0036] Further, in step three, the roller surface data is processed using 3D modeling software, a cylinder is fitted and a 3D coordinate system is established, the center line of the design point is determined, and the roller surface data points are fitted into a cylinder using the 3D modeling software and the center line of the cylinder is generated, and a 3D rectangular coordinate system is constructed with the driven shaft position sensitive sensor centering the design point (center point 1), the center point of the transmission side bearing seat hole (center point 2 2), and the center point of the operating side bearing seat hole (center point 3 3), and the center line of the design point is fitted;

[0037] Use SA spatial three-dimensional software to fit the points obtained on the roller surface of the roller system into a cylinder and generate the center line of the cylinder, and extend the end point of the transmission side of the cylinder center line through the center of the bearing seat hole to the position sensitive sensor fixed on the driven shaft; take the centering design point at the position sensitive sensor fixed on the driven shaft as center point 1, take the center point of the bearing seat hole on the transmission side of the roller system as center point 2, take the center point of the bearing seat hole on the operating side of the roller system as center point 3, and set the center point 22 as the origin, take the line connecting the design center point 1 and the design center point 33 as the x-axis, take the axis perpendicular to the x-axis in the geoid as the y-axis, and take the z-axis perpendicular to the geoid as the z-axis, establish a three-dimensional rectangular coordinate system, and fit the design point center lines corresponding to the center point 1 and the center point 22 according to the coordinates.

[0038] Further, in step 4, the horizontal height difference is calculated according to the measured data, and the horizontality is corrected by adjusting the transmission side bearing seat gasket. The horizontal adjustment calculation is based on the distance L from the center point 1 to the center point 2 measured by the laser tracker. 1 4. The distance from center point 2 to center point 3 is L 2 5. Height H from the center point of the operating side bearing seat hole to the center line of the driving shaft 1 6. Height H from the center line of the driven shaft to the center point 2 8. The height from the center line of the driving shaft to the ground level is L7. If the horizontal height difference is not zero, adjust it by adding or removing the bearing seat gasket on the transmission side. In step 4, the calculation formula for the horizontal adjustment amount ΔH is: ΔH = (H 1 +H 2 )-L, when ΔH≠0, add or subtract a gasket with a thickness of ΔH at the bearing seat on the transmission side.

[0039] Based on the infrared alignment instrument to detect the center line of the driving shaft of the transmission device and the laser tracker to detect the horizontal misalignment of the center line of the transmission side bearing seat shaft, the laser tracker is used to measure and obtain the distance L from the center point 1 to the center point 2. 1 4. The distance L from the center point 2 to the center point 3 2 5. Use the laser tracker to measure and obtain the height H from the center point three (3) of the operating side bearing seat hole to the center line of the driving shaft of the transmission device. 1 6. The distance H from the center line of the driven shaft of the transmission device to the center point -1 2 8. The height from the centerline of the driving shaft of the transmission device to the ground level is L 7. If the horizontal heights of the two centerlines are inconsistent, that is, Not equal to 0, the bearing seat shaft on the transmission side is horizontally increased or decreased by shims.

[0040] Further, in step 5, the vertical deviation is calculated based on the measured data, and the verticality is corrected by adjusting the lateral displacement of the transmission side bearing seat. The distance L from the center point 1 to the center point 2 is measured by the laser tracker. 1 4. The distance from center point 2 to center point 3 is L 2 5. Pitch deviation S from the center point of the operating side bearing seat hole to the active shaft 1 9. Coupling radius r, if the driven shaft is not perpendicular to the rolling center line 10 in the vertical direction, that is is not equal to 0, and is adjusted by the lateral displacement X of the transmission side bearing seat. In the step 5, the calculation formula of the vertical adjustment amount X is: X=(S1×L2) / (L1+L2); when X≠0, the transmission side bearing seat moves a distance X along the rolling center line 10;

[0041] The infrared alignment instrument and the laser tracker are used to measure the indication error of the driven shaft in the vertical direction perpendicular to the rolling center line 10, and the laser tracker is used to measure and obtain the distance L from the center point 1 to the center point 2. 1 4. The distance L from the center point 2 to the center point 3 2 5. Use the laser tracker to measure and obtain the vertical deviation value S from the center point 3 of the operating side bearing seat hole to the center line of the active shaft. 1 9. Coupling radius r, if the driven shaft is not perpendicular to the rolling center line 10 in the vertical direction, that is, not equal to 0, adjust X towards the inlet and outlet at the transmission side bearing seat shaft.

[0042] Furthermore, in step six, a measuring ball is used as a reference point during the adjustment process to monitor coordinate changes in real time and simulate the motion trajectory to ensure that the adjustment accuracy meets the requirements. The laser emitter and position sensitive sensor of the infrared alignment instrument are fixed to the end surface center position of the active shaft and the driven shaft by a magnetic fixture. The laser tracker adopts a dynamic tracking mode to measure the three-dimensional coordinates of the reference point during the adjustment process in real time, and generates a motion trajectory deviation curve through a three-dimensional modeling software. After the adjustment is completed, the horizontality, verticality and coaxiality of the roller system and the transmission device are re-measured by the laser tracker, and a three-dimensional error distribution report is generated;

[0043] In the data collection step S2, 9 points are measured on the transmission side and the operating side of the roller surface respectively, and the measurement points of each section are selected in a dispersed manner to increase the reliability of the measurement. Furthermore, in the step S3, before generating the cylindrical image, the points with large deviations in the measurement results are eliminated.

[0044] Furthermore, during the adjustment process of measuring the horizontality and verticality data of the roller system by the laser tracker and the coaxiality data of the transmission device by the infrared alignment instrument, before the adjustment, the measuring ball is first placed at the origin as a reference point, and the position coordinates are continuously measured during the adjustment process to simulate the motion trajectory during the adjustment process until it meets the adjustment requirements.

[0045] By using a laser tracker and an infrared alignment instrument to detect, analyze and adjust the horizontality, verticality and coaxiality of the roller system and the transmission device, data collection, data processing and fitting are carried out, a three-dimensional rectangular coordinate system is established, the motion trajectory is simulated, and a mathematical model is established. The horizontality and verticality data of the roller system and the coaxiality data of the transmission device are comprehensively analyzed and calculated, and the adjustment data is given. Finally, the horizontality, verticality and coaxiality of the roller system and the transmission device are adjusted at one time, which changes the previous step-by-step detection and adjustment method of this patent, greatly reduces the adjustment time, and greatly reduces the labor intensity of adjustment.

[0046] The comprehensive precision adjustment method of the rolling mill roll system based on laser and infrared collaborative measurement first uses a laser tracker and an infrared alignment instrument to accurately measure the horizontality, verticality and coaxiality of the roll system, and then uses 3D measurement software to analyze and process the collected data, establish a 3D rectangular coordinate system, and simulate the motion trajectory. According to the measurement results, the adjustment data of the horizontality, verticality and coaxiality are calculated. During the adjustment process, the measuring ball is used as a reference point to monitor the coordinate changes in real time to ensure that the adjustment accuracy meets the requirements. By adjusting the horizontality, verticality and coaxiality of the roll system at one time, this method greatly reduces the adjustment time, reduces labor intensity, and improves work efficiency.

[0047] Although specific embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the specific embodiments without departing from the principles and spirit thereof, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A comprehensive precision adjustment method for rolling mill roll system based on laser and infrared collaborative measurement, characterized in that: The following steps are involved: S1. Install a laser tracker on the roller side and an infrared alignment instrument on the driving and driven shafts of the transmission device to ensure the stability of the equipment; S2. Use a laser tracker to collect data at multiple points on the roll surface, and at the same time take points on the driven shaft and the drive side liner, and use an infrared alignment instrument to measure the vertical deviation; S3. Data processing: Use 3D modeling software to process the roller surface data, fit the cylinder and establish a 3D coordinate system to determine the center line of the design point; S4. Horizontal adjustment: Calculate the horizontal height difference based on the measured data and adjust the bearing seat gasket on the transmission side to correct the horizontality; S5. Vertical adjustment: Calculate the vertical deviation based on the measured data and correct the verticality by adjusting the lateral displacement of the bearing seat on the transmission side; S6. Dynamic calibration: Use the measuring ball as a reference point during the adjustment process, monitor the coordinate changes in real time, simulate the motion trajectory, and ensure that the adjustment accuracy meets the requirements.

2. The method for adjusting the comprehensive precision of a rolling mill roll system based on laser and infrared coordinated measurement according to claim 1, characterized in that: The laser tracker is fixed on a stable platform at one side of the roller, and the laser emitter and position sensitive sensor of the infrared alignment instrument are respectively fixed vertically on the driving shaft and the driven shaft of the transmission device.

3. The method for adjusting the comprehensive precision of a rolling mill roll system based on laser and infrared coordinated measurement according to claim 1, characterized in that: The infrared alignment instrument is used to measure the indication error of the driven shaft in the vertical direction to the rolling center line (10).

4. The method for adjusting the comprehensive precision of a rolling mill roll system based on laser and infrared coordinated measurement according to claim 3 is characterized in that: Nine data points are collected at both ends of the roller surface transmission side and the operating side, and the measuring points are evenly distributed along the circumference of the roller surface.

5. The method for adjusting the comprehensive precision of a rolling mill roll system based on laser and infrared coordinated measurement according to claim 4, characterized in that: The roller surface data points are fitted into a cylinder using 3D modeling software and the center line of the cylinder is generated. A 3D rectangular coordinate system is constructed using the center point 1 (1) of the driven shaft position sensitive sensor, the center point 2 (2) of the transmission side bearing seat hole, and the center point 3 (3) of the operating side bearing seat hole to fit the center line of the design point.

6. The method for adjusting the comprehensive precision of a rolling mill roll system based on laser and infrared coordinated measurement according to claim 5, characterized in that: In the step three, when constructing a three-dimensional rectangular coordinate system, the center point two (2) is taken as the origin, the line connecting the center point one (1) and the center point three (3) is taken as the x-axis, the axis perpendicular to the x-axis in the geoid plane is taken as the y-axis, and the axis perpendicular to the geoid plane is taken as the z-axis. Before generating the center line of the cylinder, abnormal points in the roller surface measurement data whose deviation exceeds a preset threshold are eliminated.

7. The method for adjusting the comprehensive precision of a rolling mill roll system based on laser and infrared coordinated measurement according to claim 1, characterized in that: The horizontal adjustment calculation is based on the distance L1(4) from the center point 1(1) to the center point 2(2), the distance L2(5) from the center point 2(2) to the center point 3(3), the height H1(6) from the center point of the operating side bearing seat hole to the center line of the active shaft, the height H2(8) from the center line of the driven shaft to the center point 1(1), and the height L(7) from the center line of the active shaft to the earth's horizontal plane. If the horizontal heights of the two center lines are inconsistent, that is, If the horizontal height difference is not equal to 0, the drive side bearing seat shaft is horizontally increased or decreased by adding or decreasing gaskets. If the horizontal height difference is not zero, the drive side bearing seat is adjusted by increasing or decreasing gaskets. In the step 4, the calculation formula for the horizontal adjustment amount ΔH is: ΔH=(H1+H2)-L. When ΔH≠0, gaskets with a thickness of ΔH are increased or decreased at the drive side bearing seat.

8. The method for adjusting the comprehensive precision of a rolling mill roll system based on laser and infrared coordinated measurement according to claim 7, characterized in that: The vertical adjustment calculation is based on the distance L1 (4) from the center point 1 (1) to the center point 2 (2), the distance L2 (5) from the center point 2 (2) to the center point 3 (3), the pitch deviation S1 (9) from the center point of the operating side bearing seat hole to the driving shaft, and the coupling radius r. If the driven shaft is not perpendicular to the rolling center line (10) in the vertical direction, that is, is not equal to 0, and is adjusted by the lateral displacement X of the transmission side bearing seat. In the step 5, the calculation formula of the vertical adjustment amount X is: X=(S1×L2) / (L1+L2); when X≠0, the transmission side bearing seat moves a distance X along the rolling center line (10).

9. The method for adjusting the comprehensive precision of a rolling mill roll system based on laser and infrared coordinated measurement according to claim 8, characterized in that: The laser emitter and position sensitive sensor of the infrared centering instrument are fixed at the center position of the end faces of the driving shaft and the driven shaft through a magnetic fixture.

10. The method for adjusting the comprehensive precision of a rolling mill roll system based on laser and infrared coordinated measurement according to claim 9, characterized in that: The laser tracker adopts a dynamic tracking mode to measure the three-dimensional coordinates of the reference point during the adjustment process in real time, and generates a motion trajectory deviation curve through three-dimensional modeling software. After the adjustment is completed, the laser tracker is used to re-measure the horizontality, verticality and coaxiality of the roller system and generate a three-dimensional error distribution report.

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