Method and device for determining surface linear speed of each roller based on single-roller straightening

Abstract

The invention discloses a method and device for determining the surface linear speed of each roller based on single-roller straightening. The method comprises the steps that rolled piece parameters and straightening roller parameters are obtained; the straightening roll parameters comprise roll spacing between each roll and the corresponding rear roll and the radius of the straightening roll; the rolling reduction of each roller and the initial surface linear speed of each roller in the straightening process are determined; the deflection and curvature of each roller are determined according to the rolling reduction of each roller; the interaction torque between each roller and the corresponding rear roller is determined according to the rolled piece parameters, the straightening roller parameters and the curvature and deflection of each roller; determining a speed regulation coefficient according to the interaction torque between each roller and the corresponding rear roller; determining the target surface linear speed of each roller according to the speed regulation coefficient and the initial surface linear speed of each roller; according to the method, the surface linear speed of each straightening roller is adjusted based on a single-roller transmission mode, so that the torque distribution of the multiple straightening rollers is uniform, and the negative torque phenomenon is accurately eliminated.

Description

Technical Field

[0001] The present invention relates to the field of computer technology, and in particular to a method and a device for determining the surface linear speed of each roller based on single roller straightening. Background Art

[0002] This section is intended to provide a background or context to the embodiments of the invention recited in the claims. No admission is made that the description herein is prior art by inclusion in this section.

[0003] Traditional roller straightening machines generally adopt the overall drive mode, that is, all working rollers are driven by one drive motor, and the speed of each working roller is consistent. However, the straightening process generally requires that the pressure reduction gradually decreases from the entrance to the exit. In addition, the reverse curvature of each point in the straightening process is different, which makes the metal material running speed before and after each straightening roller different. Under the condition that the speed of each working roller is consistent, it will cause uneven torque distribution, and even negative torque in severe cases. Negative torque phenomenon will not only cause unstable operation of the equipment, but also is the main cause of straightening roller fracture, universal joint fracture and gearbox damage. Summary of the invention

[0004] An embodiment of the present invention provides a method for determining the surface linear velocity of each roller based on single roller straightening, so as to reasonably distribute the surface linear velocity of each roller. The method comprises:

[0005] Obtaining the parameters of the rolled product and the parameters of the straightening roller; the parameters of the straightening roller include the roller distance between each roller and the corresponding rear roller and the radius of the straightening roller;

[0006] Determine the amount of depression of each roller and the initial surface linear speed of each roller during the straightening process;

[0007] Determine the deflection and curvature of each roller according to the amount of depression of each roller;

[0008] Determine the interaction torque between each roller and the corresponding rear roller according to the parameters of the rolled product, the parameters of the straightening roller, the curvature and deflection of each roller;

[0009] Determine the speed regulation coefficient according to the interaction torque between each roller and the corresponding rear roller;

[0010] Determine the target surface linear speed of each roller according to the speed regulation coefficient and the initial surface linear speed of each roller;

[0011] The speed is adjusted according to the target surface linear speed of each roller.

[0012] The embodiment of the present invention further provides a device for determining the surface linear velocity of each roller based on single roller straightening, so as to reasonably distribute the surface linear velocity of each roller, and the device comprises:

[0013] The interaction torque determination module is used to obtain the parameters of the rolled product and the parameters of the straightening rollers; the parameters of the straightening rollers include the roller distance between each roller and the corresponding rear roller and the radius of the straightening roller; determine the amount of depression of each roller and the initial surface linear velocity of each roller during the straightening process; determine the deflection and curvature of each roller according to the depression of each roller; determine the interaction torque between each roller and the corresponding rear roller according to the parameters of the rolled product, the parameters of the straightening rollers, the curvature and deflection of each roller;

[0014] The speed control module is used to determine the speed control coefficient according to the interaction torque between each roller and the corresponding rear roller; determine the target surface linear speed of each roller according to the speed control coefficient and the initial surface linear speed of each roller; and control the speed according to the target surface linear speed of each roller.

[0015] An embodiment of the present invention also provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the method for determining the surface linear velocity of each roller based on single-roller straightening is implemented.

[0016] An embodiment of the present invention further provides a computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, the method for determining the surface linear velocity of each roller based on single-roller straightening is implemented.

[0017] An embodiment of the present invention further provides a computer program product, which includes a computer program. When the computer program is executed by a processor, the method for determining the surface linear velocity of each roller based on single-roller straightening is implemented.

[0018] In the embodiment of the present invention, the parameters of the rolled product and the parameters of the straightening roller are obtained; the parameters of the straightening roller include the roller spacing between each roller and the corresponding rear roller, and the radius of the straightening roller; the pressing amount of each roller and the initial surface linear velocity of each roller during the straightening process are determined; the deflection and curvature of each roller are determined according to the pressing amount of each roller; the interaction torque between each roller and the corresponding rear roller is determined according to the rolled product parameters, the parameters of the straightening roller, the curvature and the deflection of each roller; the speed regulation coefficient is determined according to the interaction torque between each roller and the corresponding rear roller; the target surface linear velocity of each roller is determined according to the speed regulation coefficient and the initial surface linear velocity of each roller; the speed is adjusted according to the target surface linear velocity of each roller. Compared with the prior art, the interaction torque between each roller and the corresponding rear roller is determined according to the rolled product parameters, the parameters of the straightening roller, the curvature and the deflection of each roller; the speed regulation coefficient is determined according to the interaction torque between each roller and the corresponding rear roller, and based on the single-roller transmission mode, the surface linear velocity of each straightening roller is adjusted to achieve uniform torque distribution of multiple straightening rollers, and the negative torque phenomenon is accurately eliminated. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0020] Figure 1 A schematic flow chart of a method for determining the surface linear velocity of each roller based on single roller straightening provided by the present invention;

[0021] Figure 2 A schematic flow chart of a method for determining the surface linear velocity of each roller based on single roller straightening provided by the present invention;

[0022] Figure 3 A schematic flow chart of a method for determining the surface linear velocity of each roller based on single roller straightening provided by the present invention;

[0023] Figure 4 A schematic diagram of a nine-roller straightening machine provided by the present invention;

[0024] Figure 5 A schematic flow chart of a method for determining the surface linear velocity of each roller based on single roller straightening provided by the present invention;

[0025] Figure 6 A schematic diagram of the structure of a device for determining the surface linear velocity of each roller based on single-roller straightening provided by the present invention. DETAILED DESCRIPTION

[0026] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0027] Figure 1 The schematic diagram of the flow chart corresponding to the method for determining the surface linear velocity of each roller based on single roller straightening provided in an embodiment of the present invention is as follows: Figure 1 As shown, the method includes:

[0028] Step 101, obtaining parameters of the rolled product and parameters of the straightening roller.

[0029] It should be noted that the straightening roller parameters include the roller distance between each roller and the corresponding rear roller, and the straightening roller radius.

[0030] Step 102, determining the pressing amount of each roller and the initial surface linear speed of each roller during the straightening process.

[0031] Step 103, determining the deflection and curvature of each roller according to the pressing amount of each roller.

[0032] Step 104, determining the interaction torque between each roller and the corresponding rear roller according to the rolled product parameters, the roller distance between each roller and the corresponding rear roller, the radius of the straightening roller, and the curvature and deflection of each roller.

[0033] Step 105: determining a speed regulation coefficient according to the interaction torque between each roller and the corresponding rear roller.

[0034] It should be noted that the speed adjustment coefficient is used to adjust the initial surface linear speed of each roller.

[0035] Step 106, determining the target surface linear velocity of each roller according to the speed regulation coefficient and the initial surface linear velocity of each roller.

[0036] Step 107, adjusting the speed according to the target surface linear speed of each roller.

[0037] The above scheme determines the speed regulation coefficient according to the interaction torque between each roller and the corresponding rear roller. Based on the single roller transmission mode, the surface linear speed of each straightening roller is adjusted to achieve uniform torque distribution of multiple straightening rollers and accurately eliminate the negative torque phenomenon. It avoids errors and safety risks caused by human operation.

[0038] In step 102 of the embodiment of the present invention, the pressing amount of each roller during the straightening process is determined, and the step flow is as follows: Figure 2 As shown, the details are as follows:

[0039] Step 201, obtaining the inlet pressure reduction and the outlet pressure reduction.

[0040] Step 202, determining the pressure reduction of each roller according to the inlet pressure reduction and the outlet pressure reduction.

[0041] In step 202 of the embodiment of the present invention, the pressing amount of each roller is determined according to the inlet pressing amount and the outlet pressing amount. The steps are as follows: Figure 3 As shown, the details are as follows:

[0042] Step 301, determining the pressure reduction of each roller in the upper row of straightening rollers according to the inlet pressure reduction and the outlet pressure reduction;

[0043] Step 302, determining the pressing amount of each roller in the lower row of straightening rollers according to the pressing amount of each roller in the upper row of straightening rollers.

[0044] Taking the nine-roller straightening machine as an example, the distribution of the straightening rollers is as follows: Figure 4 As shown, rollers No. 2, 4, 6 and 8 are upper-row rollers, and rollers No. 1, 3, 5, 7 and 9 are lower-row rollers.

[0045] In a possible implementation, the inlet reduction amount, i.e., the reduction amount of the No. 2 roll, and the outlet reduction amount, i.e., the reduction amount of the No. 8 roll, are given according to the type of steel.

[0046] In the embodiment of the present invention, after the inlet pressure reduction and the outlet pressure reduction are determined, the pressure reduction of the remaining straightening rollers in the upper row can be calculated according to the principle of linear distribution. The specific calculation formula is as follows:

[0047]

[0048] Among them, δ k Indicates the amount of reduction of the kth upper row straightening roller.

[0049] For the lower row of straightening rollers, except for the side rollers, although other straightening rollers do not provide a reduction, they have a relative reduction. The specific calculation formula is as follows:

[0050]

[0051] Among them, j is the number of the lower row straightening roller.

[0052] In step 103 of the embodiment of the present invention, the deflection and curvature of each roller are determined according to the pressing amount of each roller. The steps are as follows: Figure 5 As shown, the details are as follows:

[0053] Step 501, determining the deflection of each roller according to the pressing amount of each roller.

[0054] Step 502, determining the curvature of each roller according to the deflection of each roller and the roller distance between each roller and the corresponding rear roller.

[0055] In the embodiment of the present invention, the specific calculation formula for determining the deflection of each roller according to the pressing amount of each roller is as follows:

[0056]

[0057] Among them, n i is the deflection of roller i, in meters; δ i Indicates the amount of reduction of the i-th upper row straightening roller.

[0058] In the embodiment of the present invention, the specific calculation formula for determining the curvature of each roller according to the deflection of each roller and the roller distance between each roller and the corresponding rear roller is as follows:

[0059]

[0060] A i is the curvature at roller i, and l is the distance between roller i and roller i+1. It should be noted that the initial curvature A of roller 1 is i Determined by the initial flatness of the strip.

[0061] In the embodiment of the present invention, the interaction torque between each roller and the corresponding rear roller is determined according to the rolled product parameters, the roller distance between each roller and the corresponding rear roller, the radius of the straightening roller, and the curvature and deflection of each roller.

[0062] In the embodiment of the present invention, the specific formula for calculating the roller interaction torque between roller No. i and roller No. i+1 is as follows:

[0063]

[0064] Among them, r is the radius of the straightening roller, S is the cross-sectional area of ​​the straightened plate, E is the elastic modulus of the steel plate, t is the transmission time, the time between the steel plate from roller i to roller i+1, h is the thickness of the rolled piece, M gi is the roller interaction torque between roller i and roller i+1.

[0065] In the embodiment of the present invention, it is determined whether there is a negative torque or a positive torque between each roller and the corresponding rear roller according to the interaction torque between each roller and the corresponding rear roller;

[0066] When there is negative torque, the speed regulation coefficient is greater than 1;

[0067] When there is positive torque, the speed regulation coefficient is less than 1;

[0068] When there is no negative torque and no positive torque, the speed regulation factor is equal to 1.

[0069] If M gi <M gi+1 , which means that roller i is dragging roller i+1, generating negative torque, and the roller surface linear velocity needs to be increased. For example, the initial surface linear velocity v i The initial value is 0.8m / s, and the speed regulation coefficient is 1.02.

[0070] If M gi >M gi+1 , indicating that roller i actively pushes roller i+1, generating a positive torque. For example, the initial surface linear velocity v i The initial value is 0.8m / s, and the speed regulation coefficient is 0.98.

[0071] If M gi =M gi+1 , proving that no negative torque is generated, then the speed regulation coefficient is equal to 1.

[0072] The above scheme, based on the transmission mode of single-roller straightening, calculates the ideal surface linear velocity of each roller through iterative calculation, ensures that there is no negative torque between rollers i and i+1, solves the negative torque problem in the straightening process, and improves production safety and production efficiency. The embodiment of the present invention also provides a device for determining the surface linear velocity of each roller based on single-roller straightening, as described in the following embodiment. The device is as follows Figure 6 As shown, the device comprises:

[0073] The interaction torque determination module 601 is used to obtain the parameters of the rolled product and the parameters of the straightening rollers; the parameters of the straightening rollers include the roller distance between each roller and the corresponding rear roller and the radius of the straightening rollers; determine the amount of depression of each roller and the initial surface linear velocity of each roller during the straightening process; determine the deflection and curvature of each roller according to the depression of each roller; determine the interaction torque between each roller and the corresponding rear roller according to the parameters of the rolled product, the parameters of the straightening rollers, the curvature and deflection of each roller;

[0074] The speed control module 602 is used to determine the speed control coefficient according to the interaction torque between each roller and the corresponding rear roller; the speed control coefficient is used to adjust the initial surface linear velocity of each roller; the target surface linear velocity of each roller is determined according to the speed control coefficient and the initial surface linear velocity of each roller; and the speed is controlled according to the target surface linear velocity of each roller.

[0075] In the embodiment of the present invention, the interaction torque determination module 601 is specifically used for:

[0076] Obtain inlet pressure and outlet pressure;

[0077] The pressure reduction of each roller is determined according to the inlet pressure reduction and the outlet pressure reduction.

[0078] In the embodiment of the present invention, the interaction torque determination module 601 is specifically used for:

[0079] Determine the pressure reduction of each roller in the upper row of straightening rollers according to the pressure reduction at the inlet and outlet;

[0080] The pressing amount of each roller in the lower row of straightening rollers is determined according to the pressing amount of each roller in the upper row of straightening rollers.

[0081] In the embodiment of the present invention, the speed regulation module 602 is specifically used for:

[0082] Determine the deflection of each roller according to the amount of depression of each roller;

[0083] The curvature of each roller is determined according to the deflection of each roller and the roller distance between each roller and the corresponding rear roller.

[0084] In the embodiment of the present invention, the speed regulation module 602 is specifically used for:

[0085] Determining whether there is a negative torque or a positive torque between each roller and the corresponding rear roller according to the interaction torque between each roller and the corresponding rear roller;

[0086] When there is negative torque, the speed regulation coefficient is greater than 1;

[0087] When there is positive torque, the speed regulation coefficient is less than 1;

[0088] When there is no negative torque and no positive torque, the speed regulation factor is equal to 1.

[0089] Since the principle of solving the problem by the device is similar to the method for determining the surface linear velocity of each roller based on single-roller straightening, the implementation of the device can refer to the implementation of the method for determining the surface linear velocity of each roller based on single-roller straightening, and the repeated parts will not be repeated.

[0090] An embodiment of the present invention also provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the method for determining the surface linear velocity of each roller based on single-roller straightening is implemented.

[0091] An embodiment of the present invention further provides a computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, the method for determining the surface linear velocity of each roller based on single-roller straightening is implemented.

[0092] An embodiment of the present invention further provides a computer program product, which includes a computer program. When the computer program is executed by a processor, the method for determining the surface linear velocity of each roller based on single-roller straightening is implemented.

[0093] In the embodiment of the present invention, the parameters of the rolled product and the parameters of the straightening roller are obtained; the parameters of the straightening roller include the roller spacing between each roller and the corresponding rear roller, and the radius of the straightening roller; the pressing amount of each roller and the initial surface linear velocity of each roller during the straightening process are determined; the deflection and curvature of each roller are determined according to the pressing amount of each roller; the interaction torque between each roller and the corresponding rear roller is determined according to the rolled product parameters, the parameters of the straightening roller, the curvature and the deflection of each roller; the speed regulation coefficient is determined according to the interaction torque between each roller and the corresponding rear roller; the target surface linear velocity of each roller is determined according to the speed regulation coefficient and the initial surface linear velocity of each roller; the speed is adjusted according to the target surface linear velocity of each roller. Compared with the prior art, the interaction torque between each roller and the corresponding rear roller is determined according to the rolled product parameters, the parameters of the straightening roller, the curvature and the deflection of each roller; the speed regulation coefficient is determined according to the interaction torque between each roller and the corresponding rear roller, and based on the single-roller transmission mode, the surface linear velocity of each straightening roller is adjusted to achieve uniform torque distribution of multiple straightening rollers, and the negative torque phenomenon is accurately eliminated.

[0094] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0095] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0096] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0097] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0098] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for determining the surface linear velocity of each roller based on single roller straightening, characterized in that: include: Obtaining the parameters of the rolled product and the parameters of the straightening roller; the parameters of the straightening roller include the roller distance between each roller and the corresponding rear roller and the radius of the straightening roller; Determine the amount of depression of each roller and the initial surface linear speed of each roller during the straightening process; Determine the deflection and curvature of each roller according to the amount of depression of each roller; Determine the interaction torque between each roller and the corresponding rear roller according to the rolled product parameters, the roller distance between each roller and the corresponding rear roller, the radius of the straightening roller, the curvature and deflection of each roller; Determine the speed regulation coefficient according to the interaction torque between each roller and the corresponding rear roller; The speed adjustment coefficient is used to adjust the initial surface linear speed of each roller; Determine the target surface linear speed of each roller according to the speed regulation coefficient and the initial surface linear speed of each roller; The speed is adjusted according to the target surface linear speed of each roller.

2. The method for determining the surface linear velocity of each roller based on single roller straightening according to claim 1, characterized in that: Determine the amount of pressure applied to each roll during the straightening process, including: Obtain inlet pressure and outlet pressure; The pressure reduction of each roller is determined according to the inlet pressure reduction and the outlet pressure reduction.

3. The method for determining the surface linear velocity of each roller based on single roller straightening according to claim 2, characterized in that: The pressure reduction of each roller is determined according to the inlet pressure reduction and the outlet pressure reduction, including: Determine the pressure reduction of each roller in the upper row of straightening rollers according to the pressure reduction at the inlet and outlet; The pressing amount of each roller in the lower row of straightening rollers is determined according to the pressing amount of each roller in the upper row of straightening rollers.

4. The method for determining the surface linear velocity of each roller based on single roller straightening according to claim 1, characterized in that: Determine the deflection and curvature of each roller according to the amount of pressure applied by each roller, including: Determine the deflection of each roller according to the amount of depression of each roller; The curvature of each roller is determined according to the deflection of each roller and the roller distance between each roller and the corresponding rear roller.

5. The method for determining the surface linear velocity of each roller based on single roller straightening according to claim 1, characterized in that: The speed regulation coefficient is determined according to the interaction torque between each roller and the corresponding rear roller, including: Determining whether there is a negative torque or a positive torque between each roller and the corresponding rear roller according to the interaction torque between each roller and the corresponding rear roller; When there is negative torque, the speed regulation coefficient is greater than 1; When there is positive torque, the speed regulation coefficient is less than 1; When there is no negative torque and no positive torque, the speed regulation factor is equal to 1.

6. A device for determining the surface linear velocity of each roller based on single roller straightening, characterized in that: include: The interaction torque determination module is used to obtain the parameters of the rolled product and the parameters of the straightening rollers; the parameters of the straightening rollers include the roller distance between each roller and the corresponding rear roller and the radius of the straightening roller; determine the amount of depression of each roller and the initial surface linear velocity of each roller during the straightening process; determine the deflection and curvature of each roller according to the depression of each roller; determine the interaction torque between each roller and the corresponding rear roller according to the parameters of the rolled product, the parameters of the straightening rollers, the curvature and deflection of each roller; A speed control module, used for determining a speed control coefficient according to the interaction torque between each roller and the corresponding rear roller; The speed regulation coefficient is used to adjust the initial surface linear speed of each roller; the target surface linear speed of each roller is determined according to the speed regulation coefficient and the initial surface linear speed of each roller; and the speed is regulated according to the target surface linear speed of each roller.

7. The device for determining the surface linear velocity of each roller based on single roller straightening according to claim 6, characterized in that: The interaction torque determination module is specifically used for: Obtain inlet pressure and outlet pressure; The pressure reduction of each roller is determined according to the inlet pressure reduction and the outlet pressure reduction.

8. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the method according to any one of claims 1 to 5 is implemented.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 5 is implemented.

10. A computer program product, characterized in that The computer program product comprises a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 5 is implemented.

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