Finishing mill roll shifting cylinder position calibration measuring tool

Abstract

The utility model discloses a position calibration measuring tool for a roll shifting cylinder of a finishing mill. The newly designed roll shifting calibration measuring tool is improved on the basis of the conventional angle square measurement. An original angle square for independently measuring the position of a single roll shifting cylinder is changed into a single roll shifting base serving as a measuring basis, and the positions of an upper roll shifting cylinder and a lower roll shifting cylinder are synchronously measured; and the problem of position deviation of the roll shifting cylinder caused by measurement reference change in the independent measurement process of the angle square is solved. The novel measuring tool can rapidly detect whether the channeling roll locking device is coplanar or not, control data errors caused by measurement deviation in the calibration process are eliminated, the problem of locking positioning deviation of a working roll is synchronously solved, the problem of channeling roll control positioning precision is solved, and high-precision closed-loop control of the channeling device is achieved.

Description

Technical Field

[0001] The utility model relates to a position calibration tool for a roller cylinder of a finishing mill. Background Art

[0002] The 1750 hot-rolled thin plate finishing mill of Bagang adopts the only six-stand finishing mill in China, in which each stand adopts SMS fixed roll shifting device, which is arranged on the bending roll block on the operating side, and the roll shifting cylinder drives the working roll to move axially. The locking device is installed on the roll shifting sleeve, and the opening and closing of the rotating locking plate are achieved by controlling the oil inlet and return of the locking cylinder, which is convenient for the replacement of the working roll. Due to the deviation of the existing roll shifting cylinder measurement and calibration position, the working roll locking plates interfere with each other after the automatic positioning of the roll shifting, and the locking plates cannot be opened, the fully automatic roll change is terminated, and the roll change time is increased from the original 8 minutes to 20 minutes; secondly, due to the roll shifting measurement and calibration reasons, the roll shifting self-locking caused by the deviation of the entrance and exit roll shifting position during the roll loading production process cannot be put into use; due to the control accuracy requirements of the SMS bending roll device, the traditional single measurement and calibration of the angle ruler can no longer meet the existing production needs, restricting the efficiency of on-site roll change and the release of production capacity.

[0003] The main problems with traditional angle ruler measurement and calibration are as follows: ① After the traditional angle ruler is individually detected and calibrated, the four roller cylinder locking plates cannot confirm the working plane; the existing method is to use an angle ruler to detect and calibrate the zero position of the roller cylinder one by one (mechanical position 180mm, roller stroke ±125mm), and use the bending roller cylinder operation measuring end surface as the basis for data detection. The measurement method is: (calibration value = 180-measurement value); due to equipment manufacturing and installation reasons, the roller cylinder operation measuring end surface is not in the same plane, resulting in inaccurate measurement. ② After the roller is calibrated, due to measurement deviation, the locking plate is not flat. During the automatic roller loading process, the locking plate interferes with the working roller slide, causing damage to the slide. ③ The existing roller shifting device has a small installation space, insufficient measuring surface space, and cannot accurately read the reading. Summary of the invention

[0004] The purpose of the utility model is to provide a finishing mill roll cylinder position calibration tool, which can quickly detect whether the roll locking device is coplanar, eliminate the control data error caused by the measurement deviation during the calibration process, and simultaneously solve the problem of working roll locking positioning deviation, solve the roll control positioning accuracy, and realize high-precision closed-loop control of the shifting device.

[0005] The technical solution adopted by the utility model is a kind of calibration tool for the position of the roller cylinder of a finishing mill, which is composed of a fixed magnet, a positioning block, a guide rod, a measuring micrometer, a dial and a synchronization rod, wherein the two ends of the synchronization rod are respectively vertically fixed with a measuring micrometer with a dial, a guide rod is also vertically slidably arranged on the synchronization rod at the micrometer on one side, an L-shaped positioning block with an outer right-angle shoulder is arranged on the upper end of the guide rod, and a fixed magnet is arranged on the inner side surface of the upper end of the positioning block.

[0006] When in use, place the positioning block on the shifting roller calibration surface, fit the right-angle surface to the shifting roller fixing block, and use a fixed magnet to fix it on the shifting roller fixing seat; the synchronization rod and guide rod are used to install the measuring micrometer; the synchronization rod is spatially positioned by the guide rod in the fixing seat; thereby achieving consistent measurement datums for the inlet and outlet shifting roller cylinders; there are scale values ​​on the guide rod, which can read the length of the synchronization rod extending out of the fixing seat, and the measuring range is 0-200mm.

[0007] The utility model simplifies the calibration and measurement procedure of the roller shifting cylinder. The use of the new measuring tool can quickly and accurately detect the spatial position of the roller shifting cylinder and realize rapid calibration; the measurement accuracy is improved, optimized from the original ±2mm to ±0.05mm, and the control accuracy is improved. After the new measuring tool is used to calibrate the roller shifting, the stability of the on-site roller replacement is improved from the original 75% to 93%, and there is no abnormal position of the roller shifting that causes the side locking cylinder to be unable to open. The self-locking of the control program and the failure of the function caused by the deviation of the roller position are completely solved. The stability of the roller shifting control is significantly improved, and the frequency of liner replacement is reduced by 50%, saving the cost of spare parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0009] Figure 2 This is a usage state diagram of the utility model. DETAILED DESCRIPTION

[0010] A finishing mill roll cylinder position calibration tool, such as Figure 1 , 2 As shown, the calibration tool consists of a fixed magnet 1, a positioning block 2, a guide rod 3, a measuring micrometer 4, a dial 5 and a synchronization rod 6. The two ends of the synchronization rod 6 are respectively vertically fixed with a measuring micrometer 4 with a dial 5. A guide rod 3 is also vertically slidably arranged on the synchronization rod at one side of the micrometer. An L-shaped positioning block 2 with an outer right-angle shoulder is arranged on the upper end of the guide rod 3, and a fixed magnet 1 is arranged on the inner side surface of the upper end of the positioning block 2.

[0011] like Figure 2The following is a diagram of the actual operation of the measuring tool on site; the positioning block 2 in the measuring tool fixture is attached to the fixed seat of the roller cylinder, and the right-angle shoulder of the positioning block is used for reference positioning. Then, the fixed magnet 1 switch handle is used to fix it to the fixed seat to complete the reference positioning installation of the measuring tool. Then, the synchronization rod 6 is moved along the guide rod 3 to the position to be measured and fixed. The guide rod display scale is recorded, and then the measuring micrometers on both sides are used to measure the distance from the end face of the roller cylinder on both sides to the synchronization rod 6, and the data is recorded; then the recorded data is processed to complete the measurement and calibration of the roller light position. After the measurement is completed, release the fixed magnet to end the measurement.

[0012] By applying the above-mentioned measuring tools, the position of the roller shifting cylinder can be accurately measured and calibrated to ensure that the spatial geometric positions of the upper and lower roller shifting cylinders are accurate and the end faces of the inlet and outlet roller shifting cylinders are in the same plane.

Claims

1. A finishing mill roll cylinder position calibration tool, which consists of a fixed magnet, a positioning block, a guide rod, a measuring micrometer, a dial and a synchronization rod, and is characterized by: Measuring micrometers with dials are fixed vertically at both ends of the synchronization rod. A guide rod is also vertically slidably arranged on the synchronization rod at one side of the micrometer. An L-shaped positioning block with an outer right-angle shoulder is arranged on the upper end of the guide rod, and a fixed magnet is arranged on the inner side surface of the upper end of the positioning block.

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