A method for measuring the repair of a universal rolling mill

Abstract

The application discloses a kind of repair measurement methods of universal rolling mill, roll is extracted from frame arcade, and ready-made instrument erection steel plate is fixed;Lay drive side control network;Lay operating side control network, and the same as the control point arrangement position and quantity of drive side control network;Laser tracker is erected on instrument erection steel plate;First measurement is carried out, selects measurement surface mode, measures operating side and drive side arcade surface, and carries out station change;According to the requirement of different repair mode, operating side arcade is placed in appropriate position according to requirement, and arcade repair is carried out according to initial measurement data;Measurement during repair: respective arcade surface measurement is carried out using the independent control network of operating side and drive side respectively;After repair is completed, whether the above-mentioned step is used to measure repair to reach target is determined, and next step work can be entered after target is reached.The application effectively solves the repair measurement problem of universal rolling mill.

Description

Technical Field

[0001] This invention relates to the field of measurement technology, and in particular to a method for repairing and measuring a universal rolling mill. Background Technology

[0002] The universal rolling mill has a unique structure, with its operating side not fixed. During maintenance, the extremely limited maintenance space between the drive and operating sides prevents repair tools from completing the necessary repairs in the middle. Repairs require pulling the operating side panel out of its fixed position along the track, rendering the initial measurement's reference network unusable. This makes repairing the operating side panel based on the initial measurement's reference difficult. Failure to use the initial measurement reference can cause center deviation between the operating and drive sides, leading to maintenance accidents. The key feature of this invention is the establishment of a combined overall control network on both the drive and operating side panels during the initial measurement. When the operating side panel moves, the reference point on the operating side moves accordingly, and the spatial position of the control network relative to the operating side panel remains unchanged, allowing it to still be used as the control network for operating side panel repair. Furthermore, it allows for measurement and analysis of the panel's condition based on the initial measurement results. This method effectively solves the measurement challenges of universal rolling mill repair.

[0003] The universal rolling mill has a unique structure, and its operating side is not fixed. During maintenance, the extremely small maintenance space between the drive side and the operating side makes it impossible for the archway repair tools to complete the corresponding maintenance work in the middle. During repair, the operating side archway needs to be pulled out from its fixed position along the track. As a result, the reference grid established during the initial measurement cannot be used for the operating side. It is difficult to repair the operating side archway based on the initial measurement reference. If the repair is not carried out based on the initial measurement reference, it will cause a center deviation between the operating side and the drive side, resulting in maintenance accidents.

[0004] Comparative Data 1: An online detection method for the spatial position and dimensional accuracy of a cold rolling mill window, belonging to the field of spatial position and dimensional measurement of metallurgical equipment, particularly involving the detection of the spatial position and dimensional accuracy of a rolling mill window. Its characteristic is the use of a laser detection device, performed as follows: station setup, detection and establishment of the ground horizontal plane, rolling production centerline, and the origin of the rolling mill window coordinate system, as well as detection of the stand window liner surface and analysis of the opening dimensional accuracy. This method cannot be used for universal rolling mill inspection.

[0005] Comparative Reference 2: This invention relates to a method for measuring the window size of a PC rolling mill using a laser tracker, belonging to the technical field of steel rolling equipment management methods. The technical solution of this invention is: calculating the distance from the measuring point to the reference plane; based on the functional vector properties and spatial positional relationships of the point to the plane, i.e., based on the distance between the laser tracker target mirror and the plane base, the radius of the laser tracker, and the spatial positional relationship between the laser tracker and the measured object, calculating the archway spacing and the liner spacing; comparing this with the design values ​​to obtain the deviation of the archway window size. This method cannot be used for universal rolling mill inspection.

[0006] Comparative Reference 3: This invention relates to the field of rolling mill equipment inspection technology, and particularly to a method for assembling a six-roll rolling mill and detecting assembly accuracy using a laser tracker. A spirit level, level, right-angle ruler, feeler gauge, etc., are used to assemble and coarsely adjust positions on the rolling mill base plate and stand that require adjustment and measurement accuracy, achieving an accuracy within 0.05 mm / m. A laser tracker with an accuracy of 0.001 mm is used for data detection. A target ball is placed at each measurement position. The laser emitted by the main unit strikes the target ball and returns to the main unit. The returned beam is received by the detection system and used to calculate the spatial position of the target, obtaining spatial coordinate data. This method cannot be used for universal rolling mill inspection. Summary of the Invention

[0007] The purpose of this invention is to provide a repair measurement method for a universal rolling mill, which is used in conjunction with the repair of the universal rolling mill. Its feature is that during the initial measurement, two independent control networks are established on the drive side and the operating side of the archway, respectively, forming an overall control network. When the operating side archway moves, the reference point on the operating side moves accordingly, and the spatial position of its control network relative to the operating side archway does not change. It can still be used as the control network for the repair of the operating side archway. Moreover, the state of the archway can be measured and analyzed based on the initial measurement results. This method effectively solves the measurement problem of universal rolling mill repair.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0009] This invention discloses a repair measurement method for a universal rolling mill, comprising: removing the rolls from the mill frame and fixing the prepared instrument mounting plate; setting up a drive-side control network; setting up an operator-side control network with the same control point positions and numbers as the drive-side control network; mounting a laser tracker on the instrument mounting plate; performing an initial measurement, selecting a measurement mode, measuring the operator-side and drive-side frame surfaces, and then transferring the mill to a different station; placing the operator-side frame in a suitable position according to the requirements of different repair methods, and repairing the frame based on the initial measurement data; measuring during the repair process: using the independent control networks of the operator-side and drive-side respectively to measure their respective frame surfaces; after the repair is completed, measuring whether the repair has achieved the target using the above steps, and proceeding to the next step only after confirming that the target has been achieved.

[0010] Furthermore, the specific steps include the following:

[0011] ①Preparation: Remove the rolls from the frame, fix the prepared instrument mounting steel plate, lock the operating side and the drive side, and weld the instrument mounting steel plate firmly.

[0012] ② Deploy the drive-side control network: Attach the base to the top of the upper archway and the bottom of the lower archway in a position that will not affect the subsequent repair work; ensure that the base is attached in a position that allows for a line of sight from the laser tracker installation location; the base must be firmly attached to prevent it from loosening, so as to avoid the failure of the entire repair work.

[0013] Two control points are attached to the top of the archway on the upper side of the entrance or exit, and two control points are attached to the bottom of the archway on the lower side of the entrance or exit. Two control points are also placed at the top and bottom of the archway centerline, close to the center. This completes the layout of the drive-side control network consisting of 12 control points.

[0014] ③ Deploy the operation-side control network: Deploy the operation-side control network in the same manner as in step ②, with the same location and number of units as in step ②;

[0015] ④ Set up the instrument: Mount the laser tracker on the instrument mounting steel plate, fix it, level it, calibrate it, open the measurement software to establish the earth's horizontal plane, and prepare for the initial measurement;

[0016] ⑤ Initial measurement: Select the surface measurement mode to measure multiple vertical archway measurement surfaces, multiple horizontal archway measurement surfaces, multiple vertical archway measurement surfaces, and multiple horizontal archway measurement surfaces respectively. After completing the measurement, select the station transfer mode to measure 24 control points of the drive-side control network and the operator-side control network.

[0017] ⑥ Repair work: Pull out the operating side archway, place the operating side archway in the appropriate position according to the requirements of different repair methods, and adjust it to the appropriate state. Repair the archway according to the initial measurement data.

[0018] ⑦ Measurement during repair: If measurement is carried out during repair, the operating side archway cannot be closed and locked. Therefore, each independent control network must be used for measurement. That is, when measuring the archway face on the operating side, the 12 control points of the operating side control network are used for measurement. Since the driving side archway is in a fixed state, the driving side archway must use the earth horizontal plane as the main reference plane for the transfer station. Select the surface measurement mode and measure multiple vertical archway measurement surfaces and multiple horizontal archway measurement surfaces respectively.

[0019] When measuring the archway face on the drive side, 12 control points of the drive side control network are used for measurement. At this time, the ground horizontal plane cannot be used as the reference plane for the transfer station in the transfer station mode. Select the surface measurement mode to measure multiple vertical archway measurement surfaces and multiple horizontal archway measurement surfaces respectively.

[0020] Furthermore, the laser tracker is fixed to the instrument mounting plate using a glue gun.

[0021] Furthermore, step ⑧ is to measure after the repair is completed: first use the method in step ⑦ to measure whether the repair has achieved the goal, and only after confirming that the goal has been achieved can the next step be carried out.

[0022] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0023] During the initial measurement, two independent control networks are established on the drive side and the operating side of the archway, respectively, forming an overall control network. When the operating side archway moves, the reference point on the operating side moves as a whole. The spatial position of its control network relative to the operating side archway remains unchanged, and it can still be used as the control network for the repair of the operating side archway. Moreover, the state of the archway can be measured and analyzed based on the initial measurement results. This method effectively solves the measurement problem of universal rolling mill repair. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of the pre-repair measurement for a universal rolling mill repair measurement method;

[0026] Figure 2 A schematic diagram of the drive-side control network layout for a repair measurement method for a universal rolling mill;

[0027] Figure 3 A schematic diagram of the operator-side control network layout for a repair measurement method of a universal rolling mill;

[0028] Figure 4 This is a schematic diagram of the drive-side measurement part of a repair measurement method for a universal rolling mill;

[0029] Figure 5 This is a schematic diagram of the measurement points on the operator side of a repair measurement method for a universal rolling mill.

[0030] Figure 6 This is a schematic diagram illustrating the measurement process during the repair of a universal rolling mill.

[0031] Explanation of reference numerals in the attached diagram: 1-Operating side (1.1 to 1.8 are the vertical archway measurement surfaces on the operating side, 1.9 to 1.12 are the horizontal archway measurement surfaces on the operating side), 2-Drive side (2.1 to 2.8 are the vertical archway measurement surfaces on the drive side, 2.9 to 2.12 are the horizontal archway measurement surfaces on the drive side), 3-Laser tracker, 4-Instrument mounting steel plate, 5-Drive side control network, 6-Operating side control network. Detailed Implementation

[0032] The implementation of the technical solution will be described in further detail below with reference to the accompanying drawings, so as to more clearly explain its structure and working principle.

[0033] As attached Figure 1 , 2 As shown in Figures 3, 4, 5, and 6, a repair measurement method for a universal rolling mill specifically includes the following steps:

[0034] ①Preparation: Remove the rolls from the frame archway and fix the prepared instrument mounting steel plate 4 on it. Figure 1 Position the instrument so that the operating side 1 and the driving side 2 are locked together, and the instrument mounting steel plate 4 is welded firmly.

[0035] ② Deploy the drive-side control network 5: such as Figure 2 When setting up the drive-side control network 5, the following precautions must be taken: the base should be glued to the top of the upper archway and the bottom of the lower archway in a position that does not affect the later repair work; the glued position of the base should ensure that it is visible from the laser tracker installation position; the base should be firmly glued to prevent it from loosening, so as not to cause the failure of the entire repair work.

[0036] Two control points are attached to the top of the upper side of the archway at the entrance or exit, and two control points are attached to the bottom of the lower side of the archway at the entrance or exit. Two control points are also placed at the top and bottom of the archway centerline, close to the center. Thus, the drive-side control network 5 consisting of 12 control points on the drive side is completed.

[0037] ③ Deploy the operation-side control network 6: such as Figure 3 The operation-side control network 6 is arranged in the same manner as in step ②, with the same location and number as in step ②.

[0038] ④ Set up the instrument: Place the laser tracker 3 on the instrument mounting steel plate 4, fix it with a glue gun, level it, calibrate it, open the measurement software to establish the earth level plane, and prepare for the first measurement;

[0039] ⑤ Initial measurement: Select the measurement surface mode, measure the vertical archway measurement surface 1.1 to 1.8, the horizontal archway measurement surface 1.9 to 1.12, the vertical archway measurement surface 2.1 to 2.8, and the horizontal archway measurement surface 2.9 to 2.12. After completing the measurement, select the transfer station mode to measure the 24 control points of the drive-side control network 5 and the operation-side control network 6.

[0040] ⑥ Repair work: Pull out the operating side archway 1, place the operating side archway 1 in the appropriate position according to the requirements of different repair methods, and adjust it to the appropriate state. Repair the archway according to the initial measurement data.

[0041] ⑦ Measurement during repair: If measurements are taken during repair, the operating side gate 1 cannot be closed and locked. Therefore, measurements must be taken using their respective independent control networks. That is, when measuring the gate face of the operating side 1, the 12 control points of the operating side control network 6 are used. Since the driving side gate 2 is in a fixed state, the driving side gate 2 must use the earth's horizontal plane as the main reference plane for the transfer station. Select the measurement plane mode and measure the vertical gate measurement planes 1.1 to 1.8 and the horizontal gate measurement planes 1.9 to 1.12.

[0042] When measuring the archway face of drive side 2, use 12 control points of drive side control network 5 for measurement. At this time, the transfer station mode cannot use the earth horizontal plane as the transfer station reference plane. Select the surface measurement mode and measure the vertical archway measurement surfaces 2.1 to 2.8 and the horizontal archway measurement surfaces 2.9 to 2.12 respectively.

[0043] ⑧ Measurement after repair: First, use the method in step ⑦ to measure whether the repair has achieved the goal. Only after confirming that the goal has been achieved can you proceed to the next step.

[0044] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A method for repairing and measuring a universal rolling mill, characterized in that, include: Pull the rolls out of the frame and fix the prepared instrument mounting steel plate. Deploy the drive-side control network; Set up the control network on the operating side, with the same location and number of control points as the control network on the drive side; mount the laser tracker on the instrument mounting steel plate; conduct the initial measurement, select the surface measurement mode, measure the archway surfaces on the operating side and drive side, and then proceed to the next station. According to the requirements of different repair methods, the operating side archway is placed in the appropriate position as required, and the archway is repaired based on the initial measurement data; during the repair process, measurements are taken on the archway surface using the independent control networks of the operating side and the drive side respectively; after the repair is completed, the repair is measured to see if the target has been achieved, and only after the target has been confirmed can the next step of the work be carried out. Specifically, the steps include the following: ①Preparation: Remove the rolls from the frame, fix the prepared instrument mounting steel plate, lock the operating side and the drive side, and weld the instrument mounting steel plate firmly. ② Deploy the drive-side control network: Attach the base to the top of the upper archway and the bottom of the lower archway in a position that will not affect the subsequent repair work; ensure that the base is attached in a position that allows for a line of sight from the laser tracker installation location; the base must be firmly attached to prevent it from loosening, so as to avoid the failure of the entire repair work. Two control points are attached to the top of the archway on the upper side of the entrance or exit, and two control points are attached to the bottom of the archway on the lower side of the entrance or exit. Two control points are also placed at the top and bottom of the archway centerline, close to the center. This completes the layout of the drive-side control network consisting of 12 control points. ③ Deploy the operation-side control network: Deploy the operation-side control network in the same manner as in step ②, with the same location and number of units as in step ②; ④ Set up the instrument: Mount the laser tracker on the instrument mounting steel plate, fix it, level it, calibrate it, open the measurement software to establish the earth's horizontal plane, and prepare for the initial measurement; ⑤ Initial measurement: Select the surface measurement mode to measure multiple vertical archway measurement surfaces and multiple horizontal archway measurement surfaces respectively. After completing the measurement, select the station transfer mode to measure 24 control points of the drive-side control network and the operator-side control network. ⑥ Repair work: Pull out the operating side archway, place the operating side archway in the appropriate position according to the requirements of different repair methods, and adjust it to the appropriate state. Repair the archway according to the initial measurement data. ⑦ Measurement during repair: If measurement is carried out during repair, the operating side archway cannot be closed and locked. Therefore, each independent control network must be used for measurement. That is, when measuring the archway face on the operating side, the 12 control points of the operating side control network are used for measurement. Since the driving side archway is in a fixed state, the driving side archway must use the earth horizontal plane as the main reference plane for the transfer station. Select the surface measurement mode and measure multiple vertical archway measurement surfaces and multiple horizontal archway measurement surfaces respectively. When measuring the archway face on the drive side, 12 control points of the drive side control network are used for measurement. At this time, the ground horizontal plane cannot be used as the reference plane for the transfer station in the transfer station mode. Select the surface measurement mode to measure multiple vertical archway measurement surfaces and multiple horizontal archway measurement surfaces respectively.

2. The repair and measurement method for a universal rolling mill according to claim 1, characterized in that, The laser tracker is fixed to the instrument mounting plate using a glue gun.

3. The repair and measurement method for a universal rolling mill according to claim 2, characterized in that, It also includes the following steps: ⑧ Measurement after repair: First, use the method in step ⑦ to measure whether the repair has achieved the goal. Only after confirming that the goal has been achieved can the next step be carried out.

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