Rolling mill window detection device and detection method thereof

Abstract

The present invention belongs to the technical field of rolling mill equipment, and further relates to a rolling mill window detection device and a detection method thereof. The present invention relates to a rolling mill window detection device, comprising an upper frame, a lower frame, and columns connecting the upper and lower frames, wherein the upper and lower frames and the columns form a rectangular parallelepiped; a crossbeam is provided between the columns on the two long sides of the rectangular parallelepiped, and the crossbeam is connected to the columns through a first bearing assembly, and the crossbeam moves up and down along the columns. The coordinate recording of the detection data is achieved through the columns and crossbeams with scales; the alignment of the detection device and the rolling mill window is achieved through the design of an upper centering adjustment pin that matches the screw pin hole; the influence of the machining gap is eliminated through the design of a plane bearing assembly with a spring, so that the window of the rolling mill can be detected in time, and the repair of the archway can be guided with strong practicality and real-time performance.

Description

Technical Field

[0001] The present invention belongs to the technical field of rolling mill equipment, and further relates to a rolling mill window detection device and a detection method thereof. Background Art

[0002] The dimensional accuracy and geometric tolerances of the arch window in the finishing mill of a steel rolling mill are crucial for ensuring the quality of strip rolling. They are crucial to the rigidity of the arch and the stability of the strip rolling process. Therefore, every steel rolling mill attaches great importance to the accuracy of the arch window. Corrosion of the window, wear of the lining plates, and foundation settlement often lead to excessive geometric tolerances. Conventional micrometer inspection methods can only measure approximate dimensions and cannot accurately determine the geometric tolerances of the equipment. Professional inspection units, the most advanced, use laser total stations, which often require multiple station moves to complete a single inspection. Each move results in an error of approximately 0.2 mm. The cumulative error for each inspection is approximately 1 mm, far exceeding the standard accuracy requirement of 0.1 mm. Furthermore, laser total stations are limited in number and expensive, and their use requires a week's advance reservation. Due to the uncertainty of hot rolling line maintenance schedules, timely inspections are difficult. Summary of the Invention

[0003] In order to solve the above problems, the purpose of the present invention is to provide a method for timely and accurately detecting the rolling mill window in the absence of a laser total station.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] A rolling mill window detection device comprises an upper frame, a lower frame and columns connecting the upper and lower frames, the upper and lower frames and the columns forming a rectangular parallelepiped; a crossbeam is provided between the columns on the long sides of the rectangular parallelepiped, the crossbeam is connected to the columns through a first bearing assembly, and the crossbeam moves up and down along the columns; a second bearing assembly is provided on the crossbeam, and the second bearing assembly moves along the crossbeam; four spirit level placement surfaces are provided on the lower frame, and a frame level is placed on the spirit level placement surface; two groups of upper centering adjustment pins and pin threads are provided on the upper frame, four groups of mutually matching lower centering adjustment studs and centering threads are provided on the lower frame, and the lower frame is also provided with four groups of mutually matching horizontal adjustment studs and anchor threads.

[0006] A further improvement of the above scheme is that the first bearing assembly and the second bearing assembly are composed of a bearing box, a roller, a box cover, a bearing screw, a column hole, a guide column and a spring, one end of the guide column is provided with a ball head and pressed on the surface of the column and the crossbeam, and the spring is sleeved on the guide column and inserted into the column hole.

[0007] A further improvement of the above solution is that a dial indicator is adsorbed on the second bearing assembly via a magnet.

[0008] A further improvement of the above solution is that scales are provided on the upright posts and the crossbar.

[0009] A further improvement of the above solution is that: a screw rod, a screw nut and a screw rod thimble hole are provided on the rolling mill arch.

[0010] A further improvement of the above solution is that positioning grooves are provided on the rolling mill arch.

[0011] A further improvement of the above solution is that the upper centering adjustment ejector pin is matched with the screw rod ejector pin hole.

[0012] A further improvement of the above solution is that the upper centering adjustment ejector pin cooperates with the positioning groove.

[0013] The beneficial effects of the present invention are: the coordinate recording of the detection data is realized by the columns and beams with scales; the alignment of the detection device and the rolling mill window is realized by designing an upper centering adjustment pin that matches the screw pin hole; and the influence of the processing gap is eliminated by designing a plane bearing assembly with a spring, so that the window of the rolling mill can be detected in time, and the repair of the archway can be guided with strong practicality and real-time performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of embodiment 1 of the present invention;

[0015] Figure 2 yes Figure 1 Left view of;

[0016] Figure 3 It is a structural diagram of the lower frame;

[0017] Figure 4 is a schematic structural diagram of the first and second bearing assemblies;

[0018] Figure 5 yes Figure 4 A top view of

[0019] Figure 6 It is a structural diagram of the bearing box;

[0020] Figure 7 It is a structural diagram of the calibration block;

[0021] Figure 8 yes Figure 7 A top view of

[0022] Figure 9 is a schematic structural diagram of embodiment 2 of the present invention;

[0023] Example in the figure: archway 1, screw 2, nut 3, screw thimble hole 4, window 5, lower frame 6, column 7, upper frame 8, upper centering adjustment thimble 9, lower centering adjustment stud 10, horizontal adjustment stud 11, spirit level placement surface 12, frame level 13, first bearing assembly 14, crossbeam 15, second bearing assembly 16, dial indicator 17, calibration block 18, fixing stud 19, screw hole 20, positioning block 21, lifting thread 22, simulated thimble hole 23, positioning circle 24, positioning groove 25, scale 26, anchor thread 27, centering thread 28, thimble thread 29, bearing box 30, roller 31, box cover 32, bearing screw 33, column hole 34, guide column 35, spring 36. DETAILED DESCRIPTION Example 1

[0024] like Figures 1 to 5 As shown, a conventional rolling mill arch is generally provided with a screw rod and a nut. When the screw rod 2 on the rolling mill arch is not removed, a nut 3 that matches the screw rod 2 and a pin hole for the screw rod 2 are also provided.

[0025] The rolling mill window device includes an upper frame 8, a lower frame 6 and a column 7 connecting the upper and lower frames 6. The upper and lower frames 6 and the columns 7 form a rectangular parallelepiped. The columns 7 are made of T-shaped steel. The flatness and parallelism of each surface of the T-shaped steel are 0.05 mm, and the parallelism of the four columns 7 with each other is 0.05 mm.

[0026] A crossbeam 15 is provided between the columns 7 on the long sides of the cuboid. The crossbeam 15 is connected to the column 7 through a first bearing assembly 14. The crossbeam 15 moves up and down along the column 7. Four spirit level placement surfaces 12 are provided on the lower frame 6. The spirit level placement surface 12 is placed with a frame spirit level 13. The verticality of the spirit level placement surface 12 and the column 7 is 0.05 mm. A centering thread is provided on the lower frame 6 and matched with four lower centering adjustment studs 10. The lower frame 6 is provided with a ground thread and is equipped with four horizontal adjustment studs 11. The middle adjustment studs match the horizontal adjustment studs 11 and cooperate with the frame spirit level 13. The upper frame 8 is provided with an upper centering adjustment pin 9 and a pin thread. The symmetry of the pin thread with the column 7 is 0.05 mm, and the position degree of the pin hole 4 of the screw rod 2 on the archway 11 is Φ0.05 mm. When implementing the centering adjustment of the detection frame, adjust the four lower centering adjustment studs 10 so that the upper centering adjustment ejector pins 9 installed in the two ejector pin threads are aligned with the ejector pin holes of the screw rod 2, and at the same time adjust the horizontality of the detection frame to achieve the centering adjustment operation of the detection frame and the arch 1.

[0027] The first bearing assembly 14 is mounted on the four columns 7 and is firmly connected to the two crossbeams 15, so that the crossbeams 15 can move up and down along the columns 7. There are scales on the columns 7 with a position accuracy of less than 0.01 mm. When the values of each point of the window 5 are detected, the vertical coordinate can be recorded.

[0028] The second bearing assembly 16 is mounted on the two crossbeams 15. The second bearing assembly 16 is provided with a dial indicator 17, and the second bearing assembly 16 can move left and right on the crossbeam 15.

[0029] There is a scale on the crossbeam 15, and when the second bearing assembly 16 detects the value of each point of the window 5, the horizontal coordinate can be recorded.

[0030] like Figures 4 to 6 As shown, the first and second bearing assemblies consist of a bearing housing 30, rollers 31, a housing cover 32, bearing screws 33, post holes 34, guide posts 35, and springs 36. Guide posts 35 have a ball head at one end that presses against the surface of the T-shaped steel 7 or crossbeam 1515. Springs 36 fit over guide posts 35 and into post holes 34. The action of springs 36 and housing cover 32 eliminates any gaps between the bearing assembly and the T-shaped steel 7 or crossbeam 1515, ensuring measurement accuracy.

[0031] The specific detection steps are as follows:

[0032] Step 1: Place the entire detection device into the arch 1 of the rolling mill;

[0033] Step 2: Place four frame-type levels 13 on the level placement surface 12;

[0034] Step 3: Preliminary adjustment of the leveling screw 11 so that the levelness displayed by the frame level 13 is less than 0.02 mm / m;

[0035] Step 4: Adjust the lower centering adjustment stud 10 and the lower frame 6 so that the upper centering adjustment ejector pin 9 is aligned with the ejector pin hole of the screw rod 2;

[0036] Step 5: Repeat steps 3 and 4 repeatedly to make the adjusting thimble completely match the thimble hole of screw rod 2 and tighten the adjusting thimble to fix the adjusting thimble with the thimble hole of screw rod 2;

[0037] Step 6: Attach the dial indicator 17 to the second bearing assembly 16 to form two detectors;

[0038] Step 7: Lower the two beams 15 along the columns 7 to the lowest position, i.e., the vertical coordinate zero position;

[0039] Step 8: First, move the second bearing assembly 16 on one beam 15 to one end of the beam 15 , i.e., take the one end of the beam 15 as the zero position of the horizontal coordinate;

[0040] Step 9: Press the pointer of the dial indicator 17 against the window 5, move the second bearing assembly 16 for horizontal detection, and record the horizontal coordinate data of the movement along the beam 15;

[0041] Step 10: After completing step 9, move the crossbeam 15 upward along the pair of columns 7, record the vertical coordinate data of the columns 7, and then perform step 9 again to complete the second horizontal coordinate data. Repeat this process to complete the measurement of all horizontal and vertical coordinate data on one side of the mill window 5.

[0042] Step 11: Repeat steps 8 to 10, move the second bearing assembly 16 on another crossbeam 15 and move another crossbeam 15 upward along another pair of columns 7, thus completing the measurement of all horizontal and vertical coordinates on the other side of the mill window 5;

[0043] Step 12: Processing all the horizontal and vertical coordinate data on both sides of the mill window 5, the dimensional accuracy and form and position tolerance of the mill window 5 of the arch 1 can be obtained to form a matrix table;

[0044] Step 13: Map the matrix table to the rolling mill window 5 or drawing. Example 2

[0045] like Figures 7 to 9 As shown, when the screw rod 2 and the nut 3 that cooperates with the screw rod 2 are removed from the window 5 of the rolling mill arch 1, a calibration block 18 is designed. The calibration block 18 has a fixing stud 19, a screw hole 20, a positioning block 21, a lifting thread 22, a simulated ejector hole 23, and a positioning circle 24. The calibration block 18 is tightly fitted with the positioning groove 25 and is fixed to the arch 1 by the fixing stud 19 through the screw hole 20. The positioning circle 24 on the calibration block 18 is the same as the outer circle of the nut 3, and the simulated ejector hole 23 is the same as the screw ejector hole 4 on the screw rod 2.

[0046] The simulated ejector hole 23 replaces the screw ejector hole 4, and then the steps of the embodiment 1 are taken to complete the detection of the form and position tolerance of the window.

[0047] The present invention is not limited to the above embodiments, and any technical solutions formed by equivalent replacement fall within the protection scope of the present invention.

Claims

1. A rolling mill window detection device, characterized in that: The frame is provided with a plurality of parallel vertical columns, the plurality of parallel vertical columns are connected to each other, and the plurality of parallel vertical columns are connected to each other by a plurality of parallel vertical columns. The plurality of parallel vertical columns are connected to each other by a plurality of parallel vertical columns. The plurality of parallel vertical columns are connected to each other by a plurality of parallel vertical columns. The plurality of parallel vertical columns are connected to each other by a plurality of parallel vertical columns. When the values of each point are measured, the column forms the vertical coordinate and the beam forms the horizontal coordinate; the first bearing assembly and the second bearing assembly are composed of a bearing box, a roller, a box cover, a bearing screw, a column hole, a guide column and a spring, and a ball head is provided at one end of the guide column and pressed on the surface of the column and the beam; the spring is sleeved on the guide column and inserted into the column hole; under the action of the spring and the box cover, the gap between the bearing assembly and the column or the beam is completely eliminated; a dial indicator is adsorbed on the second bearing assembly by a magnet; a screw rod, a nut and a screw rod pin hole are provided on the rolling mill arch; the upper centering adjustment pin cooperates with the screw rod pin hole; adjust the lower centering adjustment stud and the lower frame to align the upper centering adjustment pin with the screw rod pin hole.

2. The rolling mill window detection device according to claim 1, characterized in that: Scales are provided on the upright posts and the crossbar.

3. A method for detecting a rolling mill window using the rolling mill window detection device according to claim 1, characterized in that Perform the following steps: Step 1: Place the entire detection device into the arch of the rolling mill; Step 2: Place four frame-type levels on the level placement surface; Step 3: Preliminarily adjust the leveling studs so that the levelness displayed on the frame level is less than 0.02mm / m; Step 4: Adjust the lower centering adjustment stud and the lower frame so that the upper centering adjustment pin is aligned with the screw rod pin hole; Step 5: Repeat steps 3 and 4 repeatedly to make the adjusting pin and the screw pin hole completely match and tighten the adjusting pin to fix it to the screw pin; Step 6: Attach the dial indicator to the second bearing assembly to form two detectors; Step 7: Lower the two beams along the columns to the lowest position; Step 8: First move the second bearing assembly on one beam to one end of the beam; Step 9: Press the pointer of the dial indicator against the window, move the second bearing assembly for horizontal detection, and record the horizontal coordinate data of the movement along the beam; Step 10: After completing step 9, move the beam upward along a pair of columns, record the vertical coordinate data of the columns, and then perform step 9 again to complete the second horizontal coordinate data. Repeat this process to complete the measurement of all horizontal and vertical coordinate data on one side of the mill window. Step 11: Repeat steps 8 to 10, move the second bearing assembly on the other beam and move another beam up along the other pair of columns, thus completing the measurement of all horizontal and vertical coordinates on the other side of the mill window; Step 12: Process all the horizontal and vertical coordinate data on both sides of the mill window to obtain the size of the mill window of the archway.

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