Method, device and equipment for determining parameters of eccentric shaft of fixed width machine and medium

Abstract

The invention provides a method, a device, equipment and a medium for determining parameters of an eccentric shaft of a fixed breadth machine, and relates to the technical field of fixed breadth machines, the method comprises the following steps: determining a kinematics equation set according to a physical model of the fixed breadth machine, analyzing the kinematics equation set, and generating motion parameters; according to the motion parameters, stress analysis is conducted on a main eccentric shaft of the fixed width machine, and a resultant force time curve is generated; according to the resultant force time curve and the position data of the main eccentric shaft, the instantaneous torque of the main eccentric shaft is determined; according to the instantaneous torque, a compilation matrix is adopted, and part position data are determined; according to the part position data, finite element analysis is conducted on the fixed width machine physical model, and stress state parameters of the main eccentric shaft are generated. Parameters of the width fixing machine can be accurately determined, and therefore a production line can operate stably.

Description

Technical Field

[0001] The present invention relates to the technical field of width - fixing machines, and in particular, to a method, device, equipment, and medium for determining parameters of an eccentric shaft of a width - fixing machine. Background Art

[0002] A width - fixing machine is a key device in a hot - rolling production line, mainly used for adjusting the width of steel plates or strips. In the process of steel manufacturing, after the steel comes out of the heating furnace, it needs to go through a series of rolling processes to reach the required thickness and width specifications. The role of the width - fixing machine is to quickly change the width of the steel during its forward movement to meet the dimensional requirements of different products.

[0003] In the related art, due to the width - fixing machine, especially the synchronous width - fixing machine, its working principle depends on a complex mechanical structure, including multiple eccentric shafts and other components. The traditional design method cannot accurately determine the parameters of the main eccentric shaft of the synchronous width - fixing machine under extreme working conditions, such as the time, magnitude, and direction of the occurrence of the extreme torque load, resulting in the unstable operation of the entire production line. Summary of the Invention

[0004] The problem solved by the present invention is how to accurately determine the parameters of the width - fixing machine so as to make the production line operate stably.

[0005] To solve the above problems, the present invention provides a method, device, equipment, and medium for determining parameters of an eccentric shaft of a width - fixing machine.

[0006] In a first aspect, the present invention provides a method for determining parameters of an eccentric shaft of a width - fixing machine, including:

[0007] Determine a kinematic equation set according to the physical model of the width - fixing machine, and analyze the kinematic equation set to generate motion parameters;

[0008] Perform a force analysis on the main eccentric shaft of the width - fixing machine according to the motion parameters to generate a resultant - force time curve;

[0009] Determine the instantaneous torque of the main eccentric shaft according to the resultant - force time curve and the position data of the main eccentric shaft;

[0010] Determine component position data by using a compiled matrix according to the instantaneous torque;

[0011] Perform a finite - element analysis on the physical model of the width - fixing machine according to the component position data to generate the force - state parameters of the main eccentric shaft.

[0012] Optionally, the step of determining component position data by using a compiled matrix according to the instantaneous torque includes:

[0013] Based on the instantaneous torque and the resultant force time curve, use the prepared matrix to determine the torque values at each position at different times;

[0014] Perform an extreme value search on the torque values at each position at different times to generate torque extremes and corresponding extreme value parameters;

[0015] Based on the extreme value parameters and the kinematic equations, determine the component position data.

[0016] Optionally, based on the component position data, perform a finite element analysis on the physical model of the width setter to generate the force state parameters of the main eccentric shaft, including:

[0017] Based on the component position data, use Workbench software to construct a three-dimensional model of the width setter;

[0018] Input the instantaneous torque and the resultant force time curve into the three-dimensional model, apply boundary conditions to the three-dimensional model, and use the solver of the Workbench software to generate the force state parameters.

[0019] Optionally, the method for determining the instantaneous torque of the main eccentric shaft based on the resultant force time curve and the position data of the main eccentric shaft includes:

[0020] Based on the position data of the main eccentric shaft, determine the length of the force arm of the main eccentric shaft;

[0021] Based on the resultant force time curve and the length of the force arm, use the instantaneous torque formula to determine the instantaneous torque, and the instantaneous torque formula includes:

[0022] M = F × |OC|;

[0023] Where M is the instantaneous torque, F is the resultant force F at time t in the resultant force time curve, and OC is the length of the force arm of the resultant force F at time t.

[0024] Optionally, the method for determining the length of the force arm of the main eccentric shaft based on the position data of the main eccentric shaft includes:

[0025] Based on the position data, determine the slope and the two end coordinates of the force arm;

[0026] Based on the slope and the two end coordinates, determine the length of the force arm.

[0027] Optionally, after determining the kinematic equations according to the physical model of the width setter and analyzing the kinematic equations to generate motion parameters, before performing a force analysis on the main eccentric shaft of the width setter based on the motion parameters to generate a resultant force time curve, the method further includes:

[0028] Discretize and store the motion parameters, and construct a width setter synchronous motion trajectory database.

[0029] Optionally, after performing a finite element analysis on the physical model of the width setter based on the component position data to generate the force state parameters of the main eccentric shaft, the method further includes:

[0030] Optimize and adjust the width setter according to the force state parameters.

[0031] In a second aspect, the present invention provides a device for determining parameters of an eccentric shaft of a width setter, including:

[0032] A motion equation module, configured to determine kinematic equations according to the physical model of the width setter, analyze the kinematic equations, and generate motion parameters;

[0033] A force analysis module, configured to perform a force analysis on the main eccentric shaft of the width setter based on the motion parameters to generate a resultant force time curve;

[0034] An instantaneous torque module, configured to determine the instantaneous torque of the main eccentric shaft according to the resultant force time curve and the position data of the main eccentric shaft;

[0035] A matrix compilation module, configured to determine component position data by using matrix compilation according to the instantaneous torque;

[0036] A finite analysis module, configured to perform a finite element analysis on the physical model of the width setter based on the component position data to generate the force state parameters of the main eccentric shaft.

[0037] In a third aspect, the present invention provides an electronic device, including a memory and a processor;

[0038] The memory is configured to store a computer program;

[0039] The processor is configured to implement the method for determining parameters of an eccentric shaft of a width setter as described in the first aspect when executing the computer program.

[0040] In a fourth aspect, the present invention provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the method for determining parameters of an eccentric shaft of a width setter as described in the first aspect is implemented.

[0041] The beneficial effects of the method, device, equipment and medium for determining the parameters of the eccentric shaft of the width setter of the present invention are as follows:

[0042] By determining the physical model of the width setter and generating a kinematic equation set, the relative motion of each component inside the width setter can be accurately described. Analyzing the equation set can accurately calculate all necessary motion parameters, providing a theoretical basis for subsequent force analysis. Then, based on the motion parameters, a detailed force analysis of the main eccentric shaft is carried out, and the changes in various forces acting on the main eccentric shaft under different working conditions can be understood. Based on the resultant force time curve combined with the position data of the main eccentric shaft, the instantaneous torque at any rotation angle position at any moment can be calculated more accurately, and a compilation matrix is used to solve the specific position data of each component, so as to finally perform a finite element analysis on the updated physical model, and then the accurate force state parameters of the main eccentric shaft under actual operating conditions can be obtained, thereby optimizing the width setter according to the force state parameters to ensure the stable operation of the production line. Description of the Drawings

[0043] Figure 1 It is a schematic flowchart of the method for determining the parameters of the eccentric shaft of the width setter provided by an embodiment of the present invention;

[0044] Figure 2 It is a schematic structural diagram of the width setter provided by an embodiment of the present invention;

[0045] Figure 3 It is one of the simplified schematic diagrams of the width setter provided by an embodiment of the present invention;

[0046] Figure 4 It is another simplified schematic diagram of the width setter provided by an embodiment of the present invention;

[0047] Figure 5 It is a schematic structural diagram of the device for determining the parameters of the eccentric shaft of the width setter provided by an embodiment of the present invention;

[0048] Figure 6 It is a schematic structural diagram of the electronic device provided by an embodiment of the present invention.

[0049] Explanation of the Reference Numerals:

[0050] 1. Main eccentric shaft; 2. Large eccentric shaft; 3. Small eccentric shaft; 4. Slab; 5. Hammer head. Detailed Embodiments

[0051] To make the above objects, features, and advantages of the present invention more apparent and understandable, the following provides a detailed description of specific embodiments of the present invention with reference to the accompanying drawings. Although some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments described herein. Instead, these embodiments are provided to more thoroughly and completely understand the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not used to limit the protection scope of the present invention.

[0052] In the accompanying drawings, the Z-axis represents the vertical direction, that is, the up and down position, and the positive direction of the Z-axis represents the upper side, while the negative direction of the Z-axis represents the lower side; the X-axis in the accompanying drawings represents the horizontal direction and is designated as the front and back position, and the positive direction of the X-axis represents the front side, and the negative direction of the X-axis represents the back side; the Y-axis in the accompanying drawings represents the left and right position, and the positive direction of the Y-axis represents the left side, and the negative direction of the Y-axis represents the right side. At the same time, it should be noted that the meanings represented by the foregoing Z-axis, Y-axis, and X-axis are only for facilitating the description of the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0053] It should be understood that the various steps recorded in the method embodiments of the present invention can be executed in different orders and / or executed in parallel. In addition, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present invention is not limited in this regard.

[0054] The term "including" and its variants used herein are open-ended, that is, "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts such as "first" and "second" mentioned in the present invention are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions executed by these devices, modules, or units or their interdependent relationships.

[0055] It should be noted that the modification of "one" and "multiple" mentioned in the present invention is illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly stated in the context, it should be understood as "one or more".

[0056] The names of the messages or information exchanged between multiple devices in the embodiments of the present invention are only for illustrative purposes and are not used to limit the scope of these messages or information.

[0057] In the related art, the synchronous width - fixing machine is an important device in the hot - rolling production line. Once a problem occurs, it will cause the entire production line to shut down, resulting in huge economic losses. Due to the complex principle of the synchronous action of the mechanism of the synchronous width - fixing machine, the magnitude and direction of the load it bears during operation change continuously with the movement of the synchronous mechanism. Therefore, the traditional design method cannot accurately determine the parameters of the main eccentric shaft of the synchronous width - fixing machine under extreme working conditions. For example, the time, magnitude, and direction of the occurrence of the extreme torque load, resulting in the unstable operation of the entire production line and being unable to provide key design parameters for the replacement manufacturing of the synchronous width - fixing machine.

[0058] In view of the problems existing in the above - mentioned related art, this embodiment provides a method, device, equipment, and medium for determining the parameters of the eccentric shaft of a width - fixing machine.

[0059] As Figure 1 shown, a method for determining the parameters of the eccentric shaft of a width - fixing machine provided by an embodiment of the present invention includes:

[0060] Determine the kinematic equations according to the physical model of the width - fixing machine, and analyze the kinematic equations to generate motion parameters.

[0061] Specifically, first, according to the structure of the width - fixing machine, such as the synchronous width - fixing machine, construct a physical model of the width - fixing machine. The physical model of the width - fixing machine is as Figure 2 shown, and perform an abstract and simplified processing on the physical model of the width - fixing machine to obtain the working principle diagram of the synchronous mechanism of the width - fixing machine. The working principle diagram of the synchronous mechanism of the width - fixing machine is as Figure 3 and Figure 4 shown. Among them, while the hammer head 5 of the synchronous width - fixing machine makes a reciprocating motion up and down in the rolling direction of the rolled slab 4, that is, the Y - direction, it also makes a reciprocating motion back and forth in the horizontal movement direction of the slab 4, that is, the X - direction. The movement trajectory of the hammer head 5 is a trajectory similar to an ellipse. The angular velocities of the main eccentric shaft 1 and the large eccentric shaft 2 of the synchronous width - fixing machine are the same. As Figure 2 and Figure 3 shown, according to the physical model of the width - fixing machine, determine the kinematic equations. The kinematic equations include a horizontal displacement formula, a rolling displacement formula, a horizontal velocity formula, and a rolling velocity formula, and analyze the kinematic equations to generate motion parameters. The motion parameters include the horizontal displacement distance, the rolling displacement distance, the horizontal velocity, and the rolling velocity. Define the horizontal displacement distance, the rolling displacement distance, the horizontal velocity, and the rolling velocity in the horizontal displacement formula, the rolling displacement formula, the horizontal velocity formula, and the rolling velocity formula as unknowns according to the actual database, and the remaining data as knowns. Solve the kinematic equations by numerical differentiation and integration methods to obtain the motion parameters.

[0062] Exemplarily, let the diameter of the large eccentric shaft 2 be r 1 , and the diameter of the small eccentric shaft 3 be r 2, if the large eccentric shaft 2 rotates by an angle Φ, according to the mechanism characteristics of the synchronous width setter, the small eccentric shaft 3 rotates by an angle of 2Φ. Therefore, the horizontal displacement formula corresponding to the displacement of the hammer head 5 in the horizontal direction is:

[0063]

[0064] where M is the horizontal displacement distance, L is the center distance between the large eccentric shaft 2 and the small eccentric shaft 3 when the main eccentric shaft 1 is at 0°, and L 1 is the center distance between the connecting rod hinge points of the large eccentric shaft 2 and the small eccentric shaft 3.

[0065] As Figure 3 shown, positioning the coordinate zero point at the position of the main eccentric shaft 1 without rotation and movement, the rolling displacement formula can be:

[0066]

[0067] where N is the rolling displacement distance, R is the eccentricity value of the main eccentric shaft 1, L 2 is the distance from the axis center of the main eccentric shaft 1 to the hinge point on the side of the eccentric connecting rod mill when the main eccentric shaft 1 is at 0°, and L 3 is the center distance between the two hinge points of the main eccentric shaft 1 of the eccentric connecting rod mill, θ is the rotation angle of the main eccentric shaft 1, and e is the perpendicular distance from the hinge point on the side of the eccentric connecting rod mill to the line connecting the main eccentric shaft 1 when the main eccentric shaft 1 is at 0°. In the actual operation scenario, the rotational speed of the large eccentric shaft 2 is the same as that of the main eccentric shaft 1, and when Φ = 0°, θ = 45°, and e has a fixed value of 50 mm at this position; when Φ = 45°, θ = 90°. At this time, the hammer head translation mechanism composed of the large eccentric shaft 2, the small eccentric shaft 3 and their corresponding connecting rods is still moving forward, but the side pressing mechanism composed of the main eccentric shaft 1 and its corresponding connecting rod has reached the maximum side pressing position. Therefore, the horizontal displacement formula can also be:

[0068]

[0069] The rolling displacement formula can be:

[0070]

[0071] By differentiating the horizontal displacement formula and the rolling displacement formula respectively, the horizontal speed formula and the rolling speed formula can be obtained. Let the angular velocity of the rotation angle variable φ of the large eccentric shaft 2 be ω. The horizontal speed formula includes:

[0072]

[0073] The rolling speed formula includes:

[0074]

[0075] Among them, V M is the horizontal speed, and V N is the rolling speed.

[0076] According to the said motion parameters, perform a force analysis on the main eccentric shaft of the width sizing machine to generate a resultant force time curve.

[0077] Specifically, according to the motion parameters, use Deform plastic deformation software to simulate the rolling force and horizontal force on the connecting rod of the main eccentric shaft 1 during the width sizing process of the synchronous width sizing machine, obtain the resultant force data of the rolling force and horizontal force on the connecting rod of the main eccentric shaft 1 at any moment, draw the F-T curve of the resultant force and time, that is, the resultant force time curve, and use this as the external force load input condition for the structures of key components such as the main eccentric shaft 1 of the synchronous width sizing machine, so as to facilitate subsequent parameter calculation.

[0078] According to the said resultant force time curve and the position data of the main eccentric shaft, determine the instantaneous torque of the main eccentric shaft.

[0079] Specifically, the main eccentric shaft 1 starts from 0° and rotates a certain angle after time t. At this time, the geometric position of the connecting rod of the main eccentric shaft 1 is as Figure 4 shown by the line segment AB in the figure. In order to obtain the torque generated by the resultant force on the connecting rod of the main eccentric shaft 1 at this time on the main eccentric shaft 1, the line segment AB can be extended to intersect with the eccentric contour line of the main eccentric shaft 1, as Figure 4 shown by the dotted extension line of the line segment AB in the figure. At the same time, draw a perpendicular line from the center point O to the extension line of the line segment AB, and intersect at point C. Then the line segment OC is the acting arm of the resultant force F at time t, and the instantaneous torque of the main eccentric shaft 1 can be determined through the acting arm.

[0080] According to the said instantaneous torque, use a compiled matrix to determine the component position data.

[0081] Specifically, according to the instantaneous torque, through the processing calculation program of the compiled matrix, the running time, the rotation angles of the main eccentric shaft 1 and the large eccentric shaft 2 can be obtained. Substitute the rotation angles of the main eccentric shaft 1 and the large eccentric shaft 2 as input quantities into the horizontal displacement formula and the rolling displacement formula for solution, and then the specific angle and displacement position information corresponding to each component of the synchronous width sizing machine can be obtained, that is, the component position data.

[0082] According to the said component position data, perform a finite element analysis on the physical model of the width sizing machine to generate the force state parameters of the main eccentric shaft.

[0083] Specifically, according to the component position data, perform a finite element analysis on the physical model of the width sizing machine, and the accurate force state parameters of the main eccentric shaft can be obtained. The force state parameters include parameters such as the force application time, the force magnitude, and the force direction. The structure of the main eccentric shaft of the width sizing machine can be optimized according to the force state parameters.

[0084] In this embodiment, by determining the physical model of the width setter and generating a kinematic equation set, the relative motion of each component inside the width setter can be accurately described. Solving the equation set can accurately calculate all necessary motion parameters, providing a theoretical basis for subsequent force analysis. Then, based on the motion parameters, a detailed force analysis of the main eccentric shaft is carried out, and the changes in various forces acting on the main eccentric shaft under different working conditions can be understood. Based on the resultant force time curve and the position data of the main eccentric shaft, the instantaneous torque at any rotation angle position at any moment can be calculated more accurately, and a compiled matrix is used to solve the specific position data of each component, so that finally, by performing a finite element analysis on the updated physical model, the accurate force state parameters of the main eccentric shaft under actual operating conditions can be obtained, and thus the width setter can be optimized according to the force state parameters to ensure the stable operation of the production line. By using the basic principles of mathematics, analytic geometry, and physics and adding geometric auxiliary means, this embodiment proposes the calculation principle and various calculation formulas for the torque and torque arm of the main eccentric shaft of the synchronous width setter, which can quickly and accurately locate the time, magnitude, and direction of the occurrence of the ultimate torque load of the main eccentric shaft, ensuring the consistency between the finite element simulation model and the actual model of the main eccentric shaft of the width setter under the ultimate torque state, avoiding a series of errors caused thereby, improving the accuracy of the finite element simulation, and providing a reliable scientific basis for the design and production work of the main eccentric shaft.

[0085] Optionally, the determining the component position data by using the compiled matrix according to the instantaneous torque includes:

[0086] According to the instantaneous torque and the resultant force time curve, using the compiled matrix, determine the torque values at each position at different times;

[0087] Perform an extreme value search on the torque values at each position at different times to generate torque extreme values and corresponding extreme value parameters;

[0088] According to the extreme value parameters and the kinematic equation set, determine the component position data.

[0089] Specifically, taking the resultant force and its corresponding force arm in the resultant force-time curve as independent variables and the instantaneous torque as the dependent variable, and by programming a matrix processing calculation program, the torque values at each position at different times can be obtained, and the torque values at the positions at different times are stored in a torque data file. Herein, programming a matrix means organizing the data involved in the calculation into a matrix form to facilitate efficient mathematical operations using linear algebra methods. By programming a matrix, in any calculation software, such as Matlab, Python, etc., two one-dimensional vectors can be defined respectively to represent the resultant force and the length of its corresponding force arm, and the two one-dimensional vectors are combined into a matrix. At the same time, defining the product of the resultant force and the length of its corresponding force arm as the moment, the corresponding torque value can be directly calculated. The processing calculation program refers to the processing code corresponding to programming the matrix, such as the code for multiplying the resultant force by the length of its corresponding force arm. By performing an extreme value search on the torque values in the torque data file, the extreme value of the torque can be obtained, and at the same time, the time t corresponding to the extreme value torque, and the rotation angles of the main eccentric shaft 1 and the large eccentric shaft 2 are obtained. Substituting the rotation angles of the main eccentric shaft 1 and the large eccentric shaft 2 as input quantities into the horizontal displacement formula and the rolling displacement formula for solution, the specific angle and displacement position information corresponding to each component of the synchronous width setter can be obtained, that is, the component position data. In this embodiment, through the matrix processing calculation program, the entire vector can be directly operated on at one time, instead of processing each element one by one using a loop, which not only improves the calculation efficiency but also simplifies the code structure.

[0090] Optionally, the generating the stress state parameters of the main eccentric shaft by performing a finite element analysis on the physical model of the width setter according to the component position data includes:

[0091] Constructing a three-dimensional model of the width setter using Workbench software according to the component position data;

[0092] Inputting the instantaneous torque and the resultant force-time curve into the three-dimensional model, applying boundary conditions to the three-dimensional model, and using the solver of the Workbench software to generate the stress state parameters.

[0093] Specifically, according to the component position data, using the SCDM module in Workbench software to adjust the attitude positions of the components of the three-dimensional solid model of the synchronous width setter, and adding position mating relationships according to the mutual geometric relationships between the components to form a three-dimensional model of the whole synchronous width setter, and then returning to the Workbench calculation interface to perform a finite element analysis on the three-dimensional model, the known mechanical analysis boundary conditions, and the extreme value torque and its corresponding resultant force. Finally, using the Workbench solver, the stress state parameters of the main eccentric shaft 1 of the width setter under the extreme value torque condition can be calculated.

[0094] Optionally, determining the instantaneous torque of the main eccentric shaft according to the resultant force time curve and the position data of the main eccentric shaft includes:

[0095] Determining the length of the force arm of the main eccentric shaft according to the position data of the main eccentric shaft;

[0096] Determining the instantaneous torque according to the resultant force time curve and the length of the force arm by using an instantaneous torque formula, where the instantaneous torque formula includes:

[0097] M = F × |OC|;

[0098] where M is the instantaneous torque, F is the resultant force F at time t in the resultant force time curve, and OC is the length of the force arm of the resultant force F at time t.

[0099] Specifically, by determining the length of the force arm of the main eccentric shaft according to the position data of the main eccentric shaft and substituting the length of the force arm into the instantaneous torque formula, the instantaneous torque borne by the main eccentric shaft 1 at any rotation angle position at any time can be accurately determined.

[0100] Optionally, determining the length of the force arm of the main eccentric shaft according to the position data of the main eccentric shaft includes:

[0101] Determining the slope and the two end coordinates of the force arm according to the position data;

[0102] Determining the length of the force arm according to the slope and the two end coordinates.

[0103] Specifically, the main eccentric shaft 1 starts from 0° and rotates a certain angle after time t. At this time, the geometric position of the connecting rod of the main eccentric shaft 1 is as Figure 4 shown by the line segment AB in. In order to obtain the torque generated by the resultant force on the connecting rod of the main eccentric shaft 1 at this time on the main eccentric shaft 1, the line segment AB can be extended to intersect with the eccentric contour line of the main eccentric shaft 1, as Figure 4 shown by the dotted extension line of the line segment AB in. At the same time, a perpendicular line is drawn from the center point O to the extension line of the line segment AB, intersecting at point C. Then the line segment OC is the force arm of the resultant force F at time t, as Figure 4 shown. According to the position data of the main eccentric shaft 1, that is Figure 4 the coordinates of the line segment AB in. Let the slope of the line segment AB be K. Then, from Figure 4 the geometric relationship of perpendicularity between the line segments in, it can be known that the slope of the line segment OC is K OC = -1 / K. Since K = (Y B - Y A ) / (X B - X A ) = (YC -Y A ) / (X C -X A )、Y C / X C =-1 / K, from which X can be obtained C =(X A Y B -X B Y A ) / (K OC X A -K OC X B -Y A +Y B ), Y C =-X C / K, where X A 、X B 、X C 、Y A 、Y B 、Y C are the abscissas and ordinates of points A, B, and C respectively. Among them, from Figure 3 it can be known that X A =e - M, Y A =L 2 +N; X B =Rcosθ, Y B =Rsinθ. Then the length to the line segment OC is that is, the length of the force arm.

[0104] Optionally, after determining the kinematic equations according to the physical model of the width setter and analyzing the kinematic equations to generate kinematic parameters, before analyzing the force on the main eccentric shaft of the width setter according to the kinematic parameters to generate a resultant force time curve, it further includes:

[0105] Discretize and store the kinematic parameters to construct a width setter synchronous motion trajectory database.

[0106] Specifically, discretize and store the kinematic parameters to construct a width setter synchronous motion trajectory database for subsequent calculations.

[0107] Optionally, after performing finite element analysis on the physical model of the width setter according to the component position data to generate the force state parameters of the main eccentric shaft, it further includes:

[0108] Optimize and adjust the width setter according to the force state parameters.

[0109] Specifically, optimize and adjust the width setter according to the force state parameters to optimize the performance of the width setter while ensuring its stable operation.

[0110] As Figure 5 shown, a parameter determination device 500 for the eccentric shaft of a width setter provided by an embodiment of the present invention includes:

[0111] A motion equation module 510, configured to determine a kinematic equation set according to a physical model of the width setter, and analyze the kinematic equation set to generate motion parameters;

[0112] A force analysis module 520, configured to perform a force analysis on the main eccentric shaft of the width setter according to the motion parameters to generate a resultant force time curve;

[0113] An instantaneous torque module 530, configured to determine the instantaneous torque of the main eccentric shaft according to the resultant force time curve and the position data of the main eccentric shaft;

[0114] A matrix compilation module 540, configured to determine component position data by using a compiled matrix according to the instantaneous torque;

[0115] A finite analysis module 550, configured to perform a finite element analysis on the physical model of the width setter according to the component position data to generate the force state parameters of the main eccentric shaft.

[0116] As Figure 6 shown, an electronic device 600 provided by an embodiment of the present invention includes a memory 610 and a processor 620; the memory 610 is used to store a computer program; the processor 620 is used to implement the parameter determination method for the eccentric shaft of the width setter as described above when executing the computer program.

[0117] Or rather, an electronic device 600 includes a memory 610 and a processor 620 coupled to the memory 610; the memory 610 is configured to store a computer program; the processor 620 is configured to perform the following operations when executing the computer program:

[0118] Determine a kinematic equation set according to a physical model of the width setter, and analyze the kinematic equation set to generate motion parameters;

[0119] Perform a force analysis on the main eccentric shaft of the width setter according to the motion parameters to generate a resultant force time curve;

[0120] Determine the instantaneous torque of the main eccentric shaft according to the resultant force time curve and the position data of the main eccentric shaft;

[0121] Determine component position data by using a compiled matrix according to the instantaneous torque;

[0122] Perform a finite element analysis on the physical model of the width setter according to the component position data to generate the force state parameters of the main eccentric shaft.

[0123] A computer-readable storage medium provided by an embodiment of the present invention, on which a computer program is stored. When the computer program is executed by a processor, the parameter determination method of the offset shaft of the width setter as described above is implemented.

[0124] Or, a non-volatile computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the processor performs the following operations:

[0125] According to the physical model of the width setter, determine the kinematic equations, and analyze the kinematic equations to generate kinematic parameters;

[0126] According to the kinematic parameters, perform a force analysis on the main offset shaft of the width setter to generate a resultant force time curve;

[0127] According to the resultant force time curve and the position data of the main offset shaft, determine the instantaneous torque of the main offset shaft;

[0128] According to the instantaneous torque, use a compiled matrix to determine the component position data;

[0129] According to the component position data, perform a finite element analysis on the physical model of the width setter to generate the force state parameters of the main offset shaft.

[0130] Now, an electronic device 600 that can be a server or a client of the present invention will be described. It is an example of a hardware device that can be applied to various aspects of the present invention. The electronic device 600 is intended to represent various forms of digital electronic computer devices, such as, laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device 600 can also represent various forms of mobile devices, such as, personal digital processors, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are only examples and are not intended to limit the implementation of the present invention described herein and / or claimed.

[0131] The electronic device 600 includes a computing unit, which can perform various appropriate actions and processes according to a computer program stored in a read-only memory (ROM) or a computer program loaded from a storage unit into a random access memory (RAM). In the RAM, various programs and data required for device operation can also be stored. The computing unit, the ROM, and the RAM are connected to each other through a bus. The input / output (I / O) interface is also connected to the bus.

[0132] Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above methods. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM), etc. In this application, the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. One can select some or all of the units according to actual needs to achieve the purpose of the solution of the embodiments of the present invention. In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above integrated units can be implemented in the form of hardware or in the form of software functional units.

[0133] Although the present invention is disclosed as above, the scope of protection of the present invention is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will all fall within the scope of protection of the present invention.

Claims

1. A method for determining parameters of an eccentric shaft of a width-fixing machine, characterized in that: include: According to the physical model of the width-fixing machine, a group of kinematic equations is determined, and the group of kinematic equations is analyzed to generate motion parameters; According to the motion parameters, a force analysis is performed on the main eccentric shaft of the width-fixing machine to generate a resultant force time curve; Determining the instantaneous torque of the main eccentric shaft according to the resultant force time curve and the position data of the main eccentric shaft; According to the instantaneous torque, component position data is determined by using a compilation matrix; According to the component position data, a finite element analysis is performed on the physical model of the width-fixing machine to generate the stress state parameters of the main eccentric shaft.

2. The method for determining parameters of the eccentric shaft of a width-fixing machine according to claim 1, characterized in that: Determining component position data by using a matrix compilation according to the instantaneous torque includes: According to the instantaneous torque and the resultant force time curve, the torque value at each position at different times is determined by using the compiled matrix; Perform extreme value retrieval on the torque values ​​at each position at different times to generate the torque extreme value and the corresponding extreme value parameter; Component position data is determined based on the extreme value parameters and the kinematic equations.

3. The method for determining parameters of the eccentric shaft of a width-fixing machine according to claim 1, characterized in that: The method of performing finite element analysis on the physical model of the width-fixing machine according to the component position data to generate the stress state parameters of the main eccentric shaft includes: According to the component position data, a three-dimensional model of the width-fixing machine is constructed using Workbench software; The instantaneous torque and the resultant force time curve are input into the three-dimensional model, and boundary conditions are applied to the three-dimensional model. The force state parameters are generated by using the solver of the Workbench software.

4. The method for determining parameters of the eccentric shaft of a width-fixing machine according to claim 1, characterized in that: Determining the instantaneous torque of the main eccentric shaft according to the resultant force time curve and the position data of the main eccentric shaft includes: Determining the length of the force arm of the main eccentric shaft according to the position data of the main eccentric shaft; According to the resultant force time curve and the length of the force arm, the instantaneous torque is determined by using an instantaneous torque formula, and the instantaneous torque formula includes: M = F × |OC|; Wherein, M is the instantaneous torque, F is the resultant force F at time t in the resultant force time curve, and OC is the length of the force arm of the resultant force F at time t.

5. The method for determining parameters of the eccentric shaft of a width-fixing machine according to claim 4, characterized in that: Determining the length of the force arm of the main eccentric shaft according to the position data of the main eccentric shaft comprises: Determine the slope and the coordinates of both ends of the force arm according to the position data; The length of the force arm is determined according to the slope and the coordinates of the two ends.

6. The method for determining parameters of the eccentric shaft of a width-fixing machine according to claim 1, characterized in that: After determining the kinematic equations according to the physical model of the width-fixing machine, analyzing the kinematic equations and generating motion parameters, and before performing force analysis on the main eccentric shaft of the width-fixing machine according to the motion parameters and generating the resultant force time curve, the method further includes: The motion parameters are discretized and stored, and a synchronous motion trajectory database of the width-fixing machine is constructed.

7. The method for determining parameters of the eccentric shaft of a width-fixing machine according to claim 1, characterized in that: After performing finite element analysis on the physical model of the width-fixing machine according to the component position data to generate the stress state parameters of the main eccentric shaft, the method further includes: The width-fixing machine is optimized and adjusted according to the stress state parameters.

8. A device for determining parameters of an eccentric shaft of a width-fixing machine, characterized in that: include: The motion equation module is used to determine the kinematic equations according to the physical model of the width-fixing machine, and analyze the kinematic equations to generate motion parameters; A force analysis module, used to perform force analysis on the main eccentric shaft of the width-fixing machine according to the motion parameters, and generate a resultant force time curve; An instantaneous torque module, used for determining the instantaneous torque of the main eccentric shaft according to the resultant force time curve and the position data of the main eccentric shaft; A matrix compilation module, used for determining component position data using a compilation matrix according to the instantaneous torque; The finite analysis module is used to perform finite element analysis on the physical model of the width-fixing machine according to the component position data, and generate the stress state parameters of the main eccentric shaft.

9. An electronic device, characterized in that: including memory and processor; The memory is used to store computer programs; The processor is used to implement the method for determining parameters of the eccentric shaft of a width-fixing machine as described in any one of claims 1 to 7 when executing the computer program.

10. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, and when the computer program is executed by the processor, the method for determining parameters of the eccentric shaft of a width-fixing machine as described in any one of claims 1 to 7 is implemented.

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