A control system for precision cold rolling of thin steel rings

Abstract

The invention discloses a thin steel ring precision cold rolling control system, and relates to the field of cold rolling control technology. The system discloses an initial rolling control module, a continuous rolling control module and a shaping control module. The initial rolling control module is provided, and the flatness of the steel ring is detected and processed by means of video frame extraction, and the frame extraction processing standard of the video is optimized during the detection process. On the basis of ensuring the processing efficiency of the steel ring flatness, the preset rotation speed and preset movement speed of the main rolling roller in the initial rolling stage are adjusted. The continuous rolling control module is provided, and the real-time deformation amount and temperature change of the steel ring in the continuous rolling process can be analyzed. On the basis of ensuring that the continuous rolling temperature of the steel ring is within a reasonable range, the gear position of the cooling equipment, the rotation speed and movement speed of the main rolling roller are dynamically adjusted to ensure the continuous rolling efficiency of the steel ring. The shaping control module is provided, and the cold rolling precision of the steel ring is intelligently judged and the cold rolling precision of the steel ring is intelligently corrected by analyzing the weight of steel scraps generated during the cold rolling process of the steel ring.

Description

Technical Field

[0001] The invention relates to the technical field of cold rolling control, and more specifically to a thin steel ring precision cold rolling control system. Background Art

[0002] Thin steel rings are widely used in the fields of automobile manufacturing, aerospace, precision instruments, etc. due to their high dimensional accuracy, excellent mechanical properties and good surface quality. In order to ensure the precision processing of thin steel rings, most manufacturers currently install control systems on cold rolling equipment to control the processing of thin steel rings.

[0003] The current control system can intelligently analyze the main rolling roller speed and movement speed of steel ring processing, and the main rolling roller processes the steel ring at a preset speed and preset movement speed, and finally processes the steel ring into a thin steel ring. From steel ring processing to thin steel ring, there are three stages in total: initial rolling stage, continuous rolling stage and shaping stage. The current control system cannot accurately control the cold rolling equipment in these three stages during the actual processing process, resulting in unstable processing efficiency and processing quality of each thin steel ring. How to ensure stable processing in each of the three stages is a problem that needs to be solved urgently. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention aims to provide a thin steel ring precision cold rolling control system.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A thin steel ring precision cold rolling control system, comprising an initial rolling control module, a continuous rolling control module and a shaping control module;

[0007] The initial rolling control module is used to start the main rolling roller at a preset rotation speed and a preset moving speed after the steel ring is placed in the cold rolling equipment, synchronously collect steel scraps generated during the cold rolling process of the steel ring, record a video of the steel ring, perform frame extraction processing on the video to obtain an initial rolling photo, obtain an initial rolling control value based on the initial rolling photo, and adjust the frame extraction standard of the video, the preset rotation speed of the main rolling roller, and the preset moving speed based on the initial rolling control value;

[0008] The continuous rolling control module is used to adjust the preset rotation speed and preset moving speed of the main rolling roller after the surface of the steel ring is flat, and start the cooling device at the same time. The cooling device cools the main rolling roller in the middle gear state, continuously collects the surface temperature of the main rolling roller, takes photos of the steel ring at the end of each rotation of the steel ring, obtains the continuous rolling photos, obtains the intervention prediction value according to the collected temperature and the continuous rolling photos, and adjusts the gear of the cooling device, the preset rotation speed and preset moving speed of the main rolling roller according to the intervention prediction value;

[0009] The shaping control module is used to drive the main rolling roller backward at a preset retraction speed when the steel ring reaches the target deformation amount, and adjust the preset retraction speed of the main rolling roller according to the weight of steel chips generated during the cold rolling process of the steel ring.

[0010] Furthermore, the initial tying photo obtains the initial tying control value, specifically:

[0011] The recorded video is processed with a frame extraction interval of H, and the first two initial photos are marked as CZP n With CZP n+1 , according to the flatness calculation formula to obtain CZP n With CZP n+1 The flatness of the steel ring is CZP n+1 The flatness mark of the middle steel ring is PD, and CZP n The flatness of the steel ring and CZP n+1 The flatness of the steel ring is calculated by difference, and the flatness change value is obtained and marked as PZBZ. n+1 The corresponding time and CZP n The time difference is calculated for the corresponding time to obtain the change interval, which is marked as BHJ. The initial control value is obtained, where a1 is the flatness coefficient, a2 is the flatness variable coefficient, and a3 is the variable interval coefficient.

[0012] Furthermore, the frame extraction standard of the video, the preset rotation speed of the main tie roller and the preset movement speed are adjusted according to the initial tie control value. Specifically, the initial tie control threshold is set and marked as YZ. When the initial tie control value is greater than or equal to the initial tie control threshold, CZP is obtained at a frame extraction interval of H. n+2 , when the initial control value is less than the initial control threshold, Get CZP at the frame extraction interval n+2 , and increase the preset speed and preset moving speed of the main rolling roller.

[0013] Furthermore, the intervention prediction value is obtained according to the collected temperature and the continuous rolling photos, specifically: the continuous rolling stage data is obtained according to the continuous rolling photos, the continuous rolling stage data is used as the input data of the continuous rolling stage model, the deviation score is obtained and marked as PCP, the collected surface temperature is marked as the roll temperature, the roll temperatures collected in the same circle are sorted according to the order of collection time, and the difference between the adjacent and sorted roll temperatures and the adjacent and sorted roll temperatures is calculated to obtain the roll temperature change value. When the roll temperature change value is greater than 0, the roll temperature change value is marked as the roll heating value. When the roll temperature change value is less than 0, the roll temperature change value is marked as the roll Cooling value, sum up all the roller temperature rise values ​​to get the total roller temperature rise value, and mark it as SWZZ, mark the roller temperature change value as the total number of roller temperature rise values ​​and mark it as SZS, sum up all the roller cooling values ​​to get the total roller cooling value, and mark it as JWZZ, mark the roller temperature change value as the total number of roller cooling values ​​and mark it as JZS, use the formula JR=PCP×(SWZZ×b1+SZS×b2-JWZZ×b3+JZS×b4) to get the intervention prediction value JR, where b1 is the total roller temperature rise coefficient, b2 is the temperature rise quantity coefficient, b3 is the total roller cooling coefficient, and b4 is the cooling quantity coefficient.

[0014] Furthermore, the data of the continuous rolling stage include the real-time deformation of the steel ring and the corresponding number of rotations of the steel ring.

[0015] Furthermore, the real-time deformation of the steel ring is obtained by calculating the size of the steel ring in the continuous rolling photo, and the corresponding number of rotations of the steel ring is the actual number of rotations of the steel ring in the continuous rolling photo.

[0016] Furthermore, the gear of the cooling equipment, the preset speed of the main tying roller and the preset movement speed are adjusted according to the intervention prediction value, specifically: the intervention prediction high value and the intervention prediction low value are set, when the intervention prediction value is greater than or equal to the intervention prediction high value, the preset speed and the preset movement speed of the main tying roller are increased, and the gear of the cooling equipment is adjusted to high gear, when the intervention prediction value is less than or equal to the intervention prediction low value, the preset speed and the preset movement speed of the main tying roller are decreased, and the gear of the cooling equipment is adjusted to low gear, when the intervention prediction value is between the intervention prediction high value and the intervention prediction low value, no corresponding processing is performed.

[0017] Furthermore, the preset retraction speed of the main rolling roller is adjusted according to the weight of steel chips generated during the cold rolling process of the steel ring, specifically: the weight of steel chips generated during the cold rolling process of the steel ring is obtained, and a high value and a low value of the steel chip weight are set; when the steel chip weight is greater than or equal to the high value of the steel chip weight, the preset retraction speed of the main rolling roller is increased; when the steel chip weight is less than or equal to the high value of the steel chip weight, the preset retraction speed of the main rolling roller is decreased; when the steel chip weight is between the high value and the low value of the steel chip weight, no corresponding processing is performed.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. Set up the initial binding control module, detect and process the flatness of the steel ring by video frame extraction, and optimize the video frame extraction processing standard during the detection process. On the basis of ensuring the efficiency of the steel ring flatness processing, adjust the preset speed and preset movement speed of the main binding roller in the initial binding stage;

[0020] 2. The continuous rolling control module is set up to analyze the real-time deformation and temperature change of the steel ring during the continuous rolling process. On the basis of ensuring that the continuous rolling temperature of the steel ring is within a reasonable range, the gear position of the cooling equipment, the speed and movement speed of the main rolling roller are dynamically adjusted to ensure the continuous rolling efficiency of the steel ring;

[0021] 3. Set up a shaping control module to intelligently judge the cold rolling accuracy of the steel ring by analyzing the weight of steel chips generated during the cold rolling process of the steel ring. Intelligently correct the cold rolling accuracy of the steel ring by adjusting the retraction speed of the main rolling roller to ensure the cold rolling accuracy of the steel ring during shaping. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a principle block diagram of the initial tying control module of the present invention;

[0023] Figure 2 It is a principle block diagram of the tying control module of the present invention. DETAILED DESCRIPTION

[0024] Example 1

[0025] Reference Figure 1 to Figure 2 A thin steel ring precision cold rolling control system includes an initial rolling control module, a continuous rolling control module and a shaping control module.

[0026] First of all, the thin steel ring precision cold rolling control system is applied to the cold rolling equipment, which includes the main rolling roller, core roller, left centering roller and right centering roller. The main rolling roller is the active roller, and the core roller, left centering roller and right centering roller are passive rollers. The main rolling roller drives the steel ring to rotate, and the steel ring rotation drives the core roller, left centering roller and right centering roller to rotate. The main rolling roller moves in the direction of the line connecting the center of the core roller that is stationary, that is, the pressing movement. The gap between the main rolling roller and the core roller determines the wall thickness of the steel ring. When the main rolling roller approaches the core roller at an appropriate speed and moving speed, a rolling force is generated on the steel ring between the two rollers, and the steel ring rotates. When the rolling force meets the forging condition of the steel ring, the steel ring extends in the tangent direction of the contact point with the main rolling roller, so that the diameter of the steel ring increases. The function of the left and right centering rollers is to maintain the stability of the rolling process and the roundness of the steel ring. The purpose of this system is to process the steel ring into a thin steel ring.

[0027] The cold rolling of steel rings is divided into three stages: the initial rolling stage, the continuous rolling stage and the shaping stage. The initial rolling stage is the first stage of the cold rolling of steel rings. In this stage, the main rolling rollers roll at a small preset rotation speed and preset movement speed to smooth the surface of the steel rings and prepare for rapid rolling. The continuous rolling stage is the second stage of the cold rolling of steel rings. According to the target size of the steel rings, the preset rotation speed and preset movement speed of the main rolling rollers are increased to achieve rapid and continuous rolling. The shaping stage is the third and final stage of the cold rolling of steel rings. When the size of the ring steel is about to reach the target size, the preset rotation speed and preset movement speed of the main rolling rollers are gradually reduced, and shaping rolling is performed to perform final round shaping on the rings.

[0028] Therefore, this system is divided into an initial tying control module, a continuous tying control module and a shaping control module.

[0029] Initial rolling control module: Place the steel ring on the ring cold rolling mill, and start the main rolling roller at a preset rotation speed and a preset movement speed. The preset rotation speed and the preset movement speed of the main rolling roller are obtained in the following way: obtain the material and initial size of the steel ring (including the inner diameter of the steel ring, the outer diameter of the steel ring, and the height of the steel ring), calculate the target deformation of the steel ring according to the target size of the steel ring (including the target inner diameter, the target outer diameter, and the target height), and set the preset rotation speed and the preset movement speed of the main rolling roller according to the material of the steel ring and the target deformation.

[0030] The main rolling roller drives the steel ring to rotate, and simultaneously collects the steel scraps generated during the cold rolling process of the steel ring and weighs them in real time. Cold rolling begins and enters the initial rolling stage. After entering the initial rolling stage, the steel ring is recorded with video (the video is recorded from the perspective of being able to fully capture the cold rolling process of the steel ring).

[0031] In the initial stage, the recorded video is framed at a frame extraction interval of H to obtain the initial photos. The first two initial photos are marked as CZP n With CZP n+1 , n is the number of the first photo sorted in chronological order, n is 1, 2, ..., N, and N is a positive integer.

[0032] Get CZP according to the flatness calculation formula n With CZP n+1 The flatness of the steel ring is CZP n+1 The flatness mark of the middle steel ring is PD, and CZP n The flatness of the steel ring and CZP n+1 The flatness of the steel ring is calculated by difference, and the flatness change value is obtained and marked as PZBZ. n+1 The corresponding time and CZP n The time difference is calculated for the corresponding time to obtain the change interval, which is marked as BHJ. Get the initial tie control value, where a1 is the flatness coefficient, a2 is the flatness variable coefficient, and a3 is the variable interval coefficient. The value of a1 is 1.02, the value of a2 is 0.97, and the value of a3 is 0.98. Set the initial tie control threshold and mark it as YZ. When the initial tie control value is greater than or equal to the initial tie control threshold, obtain CZP with a frame extraction interval of H. n+2 , when the initial control value is less than the initial control threshold, Get CZP at the frame extraction interval n+2 , and increase the preset speed and preset movement speed of the main tying roller. The preset speed and preset movement speed of the main tying roller can be adjusted according to the system's preset.

[0033] An initial binding control module is set up to detect and process the flatness of the steel ring by means of video frame extraction, and the video frame extraction standard is dynamically adjusted during the detection process. On the basis of ensuring the efficiency of steel ring flatness processing, the video processing standard is gradually optimized, and the preset rotation speed and preset movement speed of the main binding roller in the initial binding stage are adjusted.

[0034] Continuous rolling control module: When the surface of the steel ring is flat, the preset speed and the preset movement speed of the main rolling roller are adjusted synchronously, and the cooling equipment is started at the same time. The cooling equipment cools the main rolling roller in the middle gear state. The cooling equipment is divided into three gears: low gear, middle gear and high gear. The cooling efficiency of the main rolling roller is low when the cooling equipment is in the low gear, and the cooling efficiency of the main rolling roller is medium when the cooling equipment is in the low gear. The cooling efficiency of the main rolling roller is high when the cooling equipment is in the low gear. If the temperature of the main rolling roller is too low or too high during the continuous rolling process, it will affect the efficiency and accuracy of the steel ring during the cold rolling process.

[0035] The surface temperature of the main rolling roller is continuously collected based on the T cycle, and the collected surface temperature is marked as the rolling roller temperature. Multiple rolling roller temperatures obtained after each rotation of the steel ring are collected, and the steel ring is photographed at the end of each rotation of the steel ring to obtain a continuous rolling photo. The real-time deformation of the steel ring is calculated according to the real-time size of the steel ring in the continuous rolling photo (including the inner diameter of the steel ring, the outer diameter of the steel ring, and the height of the steel ring), and the corresponding number of rotations of the steel ring in the continuous rolling photo (the total number of rotations of the steel ring when entering the continuous rolling stage) is obtained to generate the continuous rolling stage data. The continuous rolling stage data includes the real-time deformation of the steel ring and the corresponding number of rotations of the steel ring. The continuous rolling stage data is used as the input data of the continuous rolling stage model to obtain the deviation score, which is marked as PCP. The tie-tying stage model is obtained through the following steps: obtaining multiple sets of tie-tying stage data (historical tie-tying stage data of processing steel rings of the same material and initial size to target size steel rings, each set of tie-tying stage data includes real-time deformation and the corresponding number of rotations of the steel ring, obtained through previous experiments or production data), constructing a neural network model, using the tie-tying stage data as training data for the neural network model, assigning a deviation score to the training data, the deviation score value is greater than 0, dividing the training data into a training set and a validation set according to a set ratio, the set ratio of the training set and the validation set includes but is not limited to 1:2, 2:3, iteratively training the neural network model through the training set and the validation set, and obtaining the tie-tying stage model after the training is completed. The larger the range of the deviation score, the greater the deviation between the input tie-tying stage data and the historical tie-tying stage data.

[0036] The roll temperatures collected by the steel ring in each circle are sorted in the order of collection time, and the difference between the adjacent and later roll temperatures and the adjacent and earlier roll temperatures is calculated to obtain the roll temperature change value. When the roll temperature change value is greater than 0, the roll temperature change value is marked as the roll temperature rise value. When the roll temperature change value is less than 0, the roll temperature change value is marked as the roll cooling value. All roll temperature rise values ​​are summed to obtain the total roll temperature rise value, which is marked as SWZZ. The roll temperature change value is marked as the total number of roll temperature rise values ​​and is marked as SZS. All roll cooling values ​​are summed to obtain the total roll cooling value and is marked as JWZZ. The roll temperature change value is marked as the total number of roll cooling values ​​and is marked as JZS. The formula JR=PCP×(SWZZ×b1+ SZS×b2-JWZZ×b3+JZS×b4) obtains the intervention prediction value JR, where b1 is the total roller temperature rise coefficient, b2 is the temperature rise quantity coefficient, b3 is the total roller temperature drop coefficient, b4 is the temperature drop quantity coefficient, the value of b1 is 0.63, the value of b2 is 0.38, the value of b3 is 0.62, and the value of b4 is 0.39. Set the intervention prediction high value and the intervention prediction low value. When the intervention prediction value is greater than or equal to the intervention prediction high value, increase the preset speed and preset movement speed of the main rolling roller, and adjust the gear of the cooling device to high gear. When the intervention prediction value is less than or equal to the intervention prediction low value, decrease the preset speed and preset movement speed of the main rolling roller, and adjust the gear of the cooling device to low gear. When the intervention prediction value is between the intervention prediction high value and the intervention prediction low value, no corresponding processing is performed.

[0037] The continuous rolling control module can be set up to analyze the real-time deformation and temperature changes of the steel rings during the continuous rolling process. On the basis of ensuring that the continuous rolling temperature of the steel rings is within a reasonable range, the gear position of the cooling equipment, the rotation speed and the movement speed of the main rolling rollers can be dynamically adjusted to ensure the continuous rolling efficiency of the steel rings.

[0038] Forming control module: obtain the target deformation of the steel ring. When the steel ring reaches the target deformation, it enters the forming stage, sets the preset retraction speed (i.e. the moving speed of the main rolling roller away from the steel ring), the main rolling roller moves at the preset retraction speed, and obtains the weight of steel chips generated during the cold rolling of the steel ring. Set the high value and low value of the steel chip weight. When the steel chip weight is greater than or equal to the high value of the steel chip weight, increase the preset retraction speed of the main rolling roller. When the steel chip weight is less than or equal to the high value of the steel chip weight, decrease the preset retraction speed of the main rolling roller. When the steel chip weight is between the high value and the low value of the steel chip weight, no corresponding processing is performed.

[0039] A shaping control module is set up to intelligently judge the cold rolling accuracy of the steel ring by analyzing the weight of steel chips generated during the cold rolling process of the steel ring. The cold rolling accuracy of the steel ring is intelligently corrected by adjusting the retracting speed of the main rolling roller to ensure the cold rolling accuracy of the steel ring during shaping.

[0040] The above formulas are all dimensionless and numerical calculations. The formula is a formula for the most recent real situation obtained by collecting a large amount of data and performing software simulation. The preset parameters in the formula are set by technicians in this field according to actual conditions.

[0041] The above embodiments can be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented by software, the above embodiments can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that contains one or more available media sets. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state hard disk.

[0042] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0043] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0044] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0045] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0046] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks or optical disks.

[0047] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A thin steel ring precision cold rolling control system, characterized in that: It includes initial rolling control module, continuous rolling control module and shaping control module; The initial rolling control module is used to start the main rolling roller at a preset rotation speed and a preset movement speed after the steel ring is placed in the cold rolling equipment, synchronously collect steel scraps generated during the cold rolling process of the steel ring, record a video of the steel ring, perform frame extraction processing on the video to obtain an initial rolling photo, obtain an initial rolling control value based on the initial rolling photo, and adjust the frame extraction standard of the video, the preset rotation speed of the main rolling roller, and the preset movement speed according to the initial rolling control value; The continuous rolling control module is used to adjust the preset rotation speed and preset moving speed of the main rolling roller after the surface of the steel ring is flattened, and start the cooling device at the same time. The cooling device cools the main rolling roller in the middle gear state, continuously collects the surface temperature of the main rolling roller, takes photos of the steel ring at the end of each rotation of the steel ring, obtains the continuous rolling photos, obtains the intervention prediction value according to the collected temperature and the continuous rolling photos, and adjusts the gear of the cooling device, the preset rotation speed and preset moving speed of the main rolling roller according to the intervention prediction value; The shaping control module is used to drive the main roller backward at a preset retraction speed when the steel ring reaches the target deformation amount, and adjust the preset retraction speed of the main roller according to the weight of steel scraps generated during the cold rolling process of the steel ring; The initial rolling control value is obtained from the initial rolling photo, specifically: The recorded video is processed with a frame extraction interval of H, and the first two initial rolled photos are marked as CZP n With CZP n+1 , according to the flatness calculation formula to obtain CZP n With CZP n+1 The flatness of the steel ring is CZP n+1 The flatness mark of the middle steel ring is PD, and CZP n The flatness of the steel ring and CZP n+1 The flatness of the steel ring is calculated by difference, and the flatness change value is obtained and marked as PZBZ. n+1 The corresponding time and CZP n The time difference is calculated for the corresponding time to obtain the change interval, which is marked as BHJ. The initial rolling control value is obtained, where a1 is the flatness coefficient, a2 is the flatness variable coefficient, and a3 is the variable interval coefficient; The intervention prediction value is obtained according to the collected temperature and the continuous rolling photos, specifically: the continuous rolling stage data is obtained according to the continuous rolling photos, the continuous rolling stage data is used as the input data of the continuous rolling stage model, the deviation score is obtained, and it is marked as PCP, the collected surface temperature is marked as the roller temperature, the roller temperatures collected in the same circle are sorted according to the order of collection time, and the difference between the adjacent and sorted roller temperatures and the adjacent and sorted roller temperatures is calculated to obtain the roller temperature change value. When the roller temperature change value is greater than 0, the roller temperature change value is marked as the roller heating value. When the roller temperature change value is less than 0, the roller temperature change value is marked as the roller cooling value. value, sum up all the roller temperature rise values ​​to get the total roller temperature rise value, and mark it as SWZZ, mark the roller temperature change value as the total number of roller temperature rise values ​​and mark it as SZS, sum up all the roller cooling values ​​to get the total roller cooling value and mark it as JWZZ, mark the roller temperature change value as the total number of roller cooling values ​​and mark it as JZS, and use the formula JR=PCP×(SWZZ×b1+SZS×b2-JWZZ×b3+JZS×b4) to get the intervention prediction value JR, where b1 is the total roller temperature rise coefficient, b2 is the temperature rise quantity coefficient, b3 is the total roller cooling coefficient, and b4 is the cooling quantity coefficient.

2. A thin steel ring precision cold rolling control system according to claim 1, characterized in that: According to the initial rolling control value, the frame extraction standard of the video, the preset speed of the main rolling roller and the preset moving speed are adjusted. Specifically, the initial rolling control threshold is set and marked as YZ. When the initial rolling control value is greater than or equal to the initial rolling control threshold, CZP is obtained at a frame extraction interval of H. n+2 , when the initial rolling control value is less than the initial rolling control threshold, Get CZP at the frame extraction interval n+2 , and increase the preset speed and preset movement speed of the main roller.

3. A thin steel ring precision cold rolling control system according to claim 1, characterized in that: The data of the continuous rolling stage include the real-time deformation of the steel ring and the corresponding number of rotations of the steel ring.

4. A thin steel ring precision cold rolling control system according to claim 3, characterized in that: The real-time deformation of the steel ring is obtained by calculating the size of the steel ring in the continuous rolling photo, and the corresponding number of rotations of the steel ring is the actual number of rotations of the steel ring in the continuous rolling photo.

5. A thin steel ring precision cold rolling control system according to claim 1, characterized in that: Adjust the gear of the cooling equipment, the preset speed of the main rolling roller and the preset movement speed according to the intervention prediction value, specifically: set the intervention prediction high value and the intervention prediction low value, when the intervention prediction value is greater than or equal to the intervention prediction high value, increase the preset speed of the main rolling roller and the preset movement speed, and adjust the gear of the cooling equipment to high gear, when the intervention prediction value is less than or equal to the intervention prediction low value, lower the preset speed of the main rolling roller and the preset movement speed, and adjust the gear of the cooling equipment to low gear, when the intervention prediction value is between the intervention prediction high value and the intervention prediction low value, no corresponding processing is performed.

6. A thin steel ring precision cold rolling control system according to claim 1, characterized in that: The preset retraction speed of the main roll is adjusted according to the weight of the steel chips generated during the cold rolling process of the steel ring, specifically: the weight of the steel chips generated during the cold rolling process of the steel ring is obtained, and a high value and a low value of the steel chip weight are set; when the steel chip weight is greater than or equal to the high value of the steel chip weight, the preset retraction speed of the main roll is increased; when the steel chip weight is less than or equal to the high value of the steel chip weight, the preset retraction speed of the main roll is decreased; when the steel chip weight is between the high value and the low value of the steel chip weight, no corresponding processing is performed.

Images