CN114406009B - Roll shape determining method and device with convexity control capability - Google Patents
Roll shape determining method and device with convexity control capability Download PDFInfo
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- CN114406009B CN114406009B CN202210093219.5A CN202210093219A CN114406009B CN 114406009 B CN114406009 B CN 114406009B CN 202210093219 A CN202210093219 A CN 202210093219A CN 114406009 B CN114406009 B CN 114406009B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2267/00—Roll parameters
- B21B2267/18—Roll crown; roll profile
Abstract
The application relates to the technical field of plate and strip rolling, in particular to a roll shape determining method with convexity control capability, which comprises the following steps: acquiring a target convexity and a target width of a target roller; after a model curve is established in a roll-shaped coordinate system, the model curve is adjusted through the target convexity, and an adjusted model curve is obtained, wherein the roll-shaped coordinate system is established in the target roll; and adjusting the adjusted model curve through the target width to obtain a target model curve, and obtaining the roll shape of the target roll according to the target model curve. The method improves the control efficiency of the roll shape, and determines the roll shape with proper width and high convexity control capability according to the actual requirements of the process.
Description
Technical Field
The application relates to the technical field of plate and strip rolling, in particular to a roll shape determining method and device with convexity control capability.
Background
The width production line of the strip is also generally used for rolling the strip with narrow specification. When the working roll mark is 2550mm wide and the rolling width of the product line is smaller than 1200mm wide, a roll shape designed by a traditional 2-8 degree polynomial curve or half-angle sin curve is adopted, and under the condition of certain roll radius differences, the width of the roll shape is reduced, the convexity control capability is reduced, and the problem of low control efficiency of the roll shape is caused.
Disclosure of Invention
The embodiment of the application solves the technical problem of low control efficiency of the roll shape in the prior art by providing the roll shape determining method and device with convexity control capability, realizes the improvement of the control efficiency of the roll shape, and determines the roll shape with proper width and high convexity control capability according to the actual requirements of the process.
In a first aspect, an embodiment of the present application provides a roll shape determining method for convexity control capability, including:
acquiring a target convexity and a target width of a target roller;
after a model curve is established in a roll-shaped coordinate system, the model curve is adjusted through the target convexity, and an adjusted model curve is obtained, wherein the roll-shaped coordinate system is established in the target roll;
and adjusting the adjusted model curve through the target width to obtain a target model curve, and obtaining the roll shape of the target roll according to the target model curve.
Preferably, the establishing a model curve in the roll-shaped coordinate system includes:
in the roll-shaped coordinate system, a normal distribution curve is established.
Preferably, the adjusting the model curve through the target convexity, to obtain an adjusted model curve, includes:
obtaining a convexity conversion coefficient according to the target convexity and the initial convexity of the model curve;
and obtaining the adjusted model curve according to the convexity conversion coefficient.
Preferably, the adjusting the adjusted model curve by the target width to obtain a target model curve includes:
obtaining an inflection point of the adjusted model curve according to the length of the roller body of the target roller and the target width;
and obtaining the target model curve according to the inflection point of the adjusted model curve.
Preferably, the obtaining the roll shape of the target roll according to the target model curve includes:
generating a polynomial function from the target model curve;
and if the fitting degree of the polynomial function is not smaller than the fitting degree threshold value, inputting the polynomial function into a machine tool of the target roller to form a roller shape of the target roller.
Preferably, after generating the polynomial function from the target model curve, the method further includes:
and if the fitting degree of the polynomial function is smaller than the fitting degree threshold value, generating a new polynomial function from the target model curve until the new polynomial function is input into a machine tool of the target roller to form the roller shape of the target roller when the fitting degree of the new polynomial function is not smaller than the fitting degree threshold value.
Preferably, establishing the roll-shape coordinate system in the target roll includes:
obtaining a coordinate interval according to the length of the roller body of the target roller and the preset point number;
and generating the roll length into the abscissa of the roll shape coordinate system through the coordinate space.
Based on the same inventive concept, the present application also provides a roll shape determining apparatus of convexity control capability, comprising:
the acquisition module is used for acquiring the target convexity and the target width of the target roller;
the adjusting module is used for adjusting the model curve through the target convexity after the model curve is established in a roll-shaped coordinate system, so as to obtain an adjusted model curve, wherein the roll-shaped coordinate system is established in the target roll;
and the target module is used for adjusting the adjusted model curve through the target width to obtain a target model curve, and obtaining the roll shape of the target roll according to the target model curve.
Based on the same inventive concept, in a third aspect, the present application provides a computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of a roll shape determination method of convexity control capability when executing the program.
Based on the same inventive concept, in a fourth aspect, the present application provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of a roll shape determination method of convexity control capability.
One or more technical solutions in the embodiments of the present application at least have the following technical effects or advantages:
in the embodiment of the application, after the target convexity and the target width of the target roller are obtained, a roller-shaped coordinate system is required to be established in the target roller, and then a model curve is required to be established in the roller-shaped coordinate system. Here, a roll shape coordinate system is established according to the actual condition of the target roll so as to provide a reliable and high-precision basis for determining a roll shape with proper width and high convexity control capability. And then, adjusting the model curve through the target convexity to obtain an adjusted model curve. The integral convexity of the model curve is controlled through the target convexity, so that the convexity of the roll shape is accurately controlled, and the control efficiency of the roll shape is improved. And then, obtaining a target model curve through the model curve after the target width adjustment. The integral width of the model curve is controlled through the target width, so that the precise control of the width of the roll shape is realized, and the control efficiency of the roll shape is improved. And finally, generating a roller shape of the target roller according to the target model curve to determine the roller shape with proper width and high convexity control capability, further improving the control efficiency of the roller shape and the control capability of the plate shape, facilitating the production of narrow-specification products in a wide-specification production line, and reducing the grinding and consumption of the roller.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also throughout the drawings, like reference numerals are used to designate like parts. In the drawings:
FIG. 1 is a schematic flow chart showing the steps of a roll shape determination method of convexity control capability in an embodiment of the present application;
FIG. 2 shows a schematic diagram of a normal distribution curve established in a roll shape coordinate system of a target roll in an embodiment of the present application;
FIG. 3 shows a schematic roll shape of a target roll having a roll body length of 2700mm in an embodiment of the present application;
FIG. 4 shows a block diagram of a convexity control capable roll shape determining apparatus in an embodiment of the present application;
fig. 5 shows a schematic structural diagram of a computer device in an embodiment of the present application.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Example 1
A first embodiment of the present application provides a roll shape determining method for convexity control capability, as shown in fig. 1, including:
s101, acquiring a target convexity and a target width of a target roller;
s102, after a model curve is established in a roll-shaped coordinate system, the model curve is adjusted through a target convexity, and an adjusted model curve is obtained, wherein the roll-shaped coordinate system is established in a target roll;
s103, obtaining a target model curve through the model curve after the target width adjustment, and obtaining the roll shape of the target roll according to the target model curve.
In this embodiment, after the target convexity and the target width of the target roller are acquired, a roller shape coordinate system needs to be established in the target roller, and then a model curve needs to be established in the roller shape coordinate system. Here, a roll shape coordinate system is established according to the actual condition of the target roll so as to provide a reliable and high-precision basis for determining a roll shape with proper width and high convexity control capability. And then, adjusting the model curve through the target convexity to obtain an adjusted model curve. The integral convexity of the model curve is controlled through the target convexity, so that the convexity of the roll shape is accurately controlled, and the control efficiency of the roll shape is improved. And then, obtaining a target model curve through the model curve after the target width adjustment. The integral width of the model curve is controlled through the target width, so that the precise control of the width of the roll shape is realized, and the control efficiency of the roll shape is improved. And finally, generating a roller shape of the target roller according to the target model curve to determine the roller shape with proper width and high convexity control capability, further improving the control efficiency of the roller shape and the control capability of the plate shape, facilitating the production of narrow-specification products in a wide-specification production line, and reducing the grinding and consumption of the roller.
Next, the specific implementation steps of the roll shape determining method for convexity control capability provided in this embodiment will be described in detail with reference to fig. 1:
first, step S101 is performed to acquire a target convexity and a target width of a target roller.
Specifically, according to the actual demand of the product line product, the target convexity of the target roller is obtained. For example, the convexity of the actual demand is 0.3mm, and the target convexity is set to 0.3mm. The radius of the target roll is generally the convexity value. The value of the target convexity can be positive or negative, the value of the target convexity is positive, and the convexity represents that the convex convexity exists in the length of the roller body of the target roller; the value of the target convexity is negative, representing that there is a concave convexity in the length of the roll body of the target roll. According to the actual demand of the product line, the target width of the target roller is obtained.
It should be noted that the position of the center point of the product line product is consistent with the position of the center point of the length of the roll body of the target roll during the rolling process.
Next, step S102 is executed to adjust the model curve through the target convexity after the model curve is established in the roll-shaped coordinate system, and obtain the adjusted model curve, wherein the roll-shaped coordinate system is established in the target roll.
Specifically, a roll-form coordinate system is first established in the target roll. In a theoretically designed roll-shaped coordinate system, the abscissa of the theoretically designed roll-shaped coordinate system is usually-1 to 1. Then, it is necessary to convert the theoretically designed roll shape coordinate system into the roll shape coordinate system of the target roll.
The specific process of establishing the roll shape coordinate system in the target roll is that the coordinate distance is obtained according to the roll length of the target roll and the preset points; and generating the roll length into the abscissa of the roll shape coordinate system through the coordinate spacing. The preset number of points is set according to actual requirements, for example, the range of the preset number of points is generally 20-1000, and the preset number of points is 20, or 500, or 1000.
Specifically, the length of the roll body of the target roll is L, the preset point number is d, and the coordinate interval j is obtained according to the length L of the roll body and the preset point number, and is specifically shown in a formula (1).
After the coordinate pitch j is obtained, one end of the length of the roll body of the target roll is set as a start point 0 (zero), and the other end is set as an end point. The coordinate pitch j is gradually increased from the start point 0 until the end point is increased.
For example, the length L of the roll body of the target roll is 2000mm, the number d of preset points is 101, and the coordinate interval j is 20mm. One end of the length L of the roller body is taken as a starting point 0, the starting point is the 1 st point, the other end of the L is taken as an end point, and the end point is the 101 st point. The number of 2 points is obtained by increasing the coordinate interval j by one, i.e., 20mm, from the starting point 0. And the number of points is increased by 20mm, so that the number of points is 3, and the like. Therefore, a reliable and high-precision roller shape coordinate system of the target roller is obtained, the roller shape of the target roller is convenient to build later, the roller shape with proper width and high convexity control capability is facilitated to be made, and the roller shape control efficiency is improved.
After the roll shape coordinate system of the target roll is obtained, a model curve is built in the roll shape coordinate system, as shown in fig. 2. The model curve is a normal distribution curve, the dashed line in fig. 2 represents the normal distribution curve, and the other lines in fig. 2 represent curves of the conventional technology, such as a quadratic term curve, a sin30 ° curve, a sin60 ° curve, and a sin75 ° curve. In fig. 2, the center point of the abscissa of the roll-shaped coordinate system corresponds to the center point of the normal distribution curve. The function of the normal distribution is shown in formula (2).
Where x is the number of points on the abscissa of the roll-form coordinate system of the target roll, f (x) is the ordinate value of the number of points corresponding to the abscissa, μ is the average number, and σ is the standard deviation.
And after a normal distribution curve is established in the roll-shaped coordinate system, the model curve is adjusted through the target convexity, and the adjusted model curve is obtained. The model curve is adjusted through the target convexity, and the specific process of the adjusted model curve is as follows:
obtaining a convexity conversion coefficient according to the target convexity and the initial convexity of the model curve; and obtaining an adjusted model curve according to the convexity conversion coefficient.
Specifically, a normal distribution curve is established in the roll-shaped coordinate system, the normal distribution curve having an initial convexity, i.e., a height difference. Taking fig. 2 as an example, the ordinate value corresponding to the 101 th point of the abscissa in the roll coordinate system is taken as the initial convexity. According to the target convexity CT and the initial convexity CS, a convexity conversion coefficient A is obtained, namely A=CT/CS, or A= (CT/CS) x a, wherein a is a weight coefficient, and the value range is 0-1. According to the functional expression of the normal distribution curve, the abscissa and the ordinate of each point in the roll-shaped coordinate system are in one-to-one correspondence, and after the convexity conversion coefficient A is obtained, the ordinate of each point is multiplied by the convexity conversion coefficient to obtain an adjusted model curve, namely the adjusted normal distribution curve. Taking fig. 2 as an example, in the model curve, the ordinate value corresponding to the 96 th point of the abscissa is F, and in the adjusted model curve, the ordinate value corresponding to the 96 th point of the abscissa is F ', F' =f×a.
In the embodiment, the normal distribution curve is adjusted through the target convexity, so that the adjusted normal distribution curve is obtained, a roller shape with high convexity control capability is formed conveniently, the accurate control of convexity is realized, and the control efficiency of the roller shape is improved.
Then, step S103 is executed to obtain a target model curve through the model curve after the target width adjustment, and obtain the roll shape of the target roll according to the target model curve.
Specifically, after the adjusted model curve is obtained, the adjusted model curve is adjusted by the target width to obtain the target curve. The specific process for obtaining the target model curve through the model curve after the target width adjustment is as follows: obtaining an inflection point of the adjusted model curve according to the length of the roller body of the target roller and the target width; and obtaining a target model curve according to the inflection point of the adjusted model curve.
Since the center point position of the adjusted model curve is consistent with the center point position of the roll body length of the target roll, on the adjusted model curve, there are two inflection points symmetrical with the center point of the roll body length as a center line, and the inflection points are determined according to the roll body length L of the target roll and the target width TD, namely, the distance e= (L-TD)/2 from the inflection point to the center line. In the actual process, the inflection point is not necessarily a specific point, but a range is taken at the inflection point, and the standard deviation sigma of the model curve (normal distribution curve) is adjusted to enable the inflection point to be within +/-100 mm of the inflection point, so that the target model curve is obtained. For example, the length of the roll body of the target roll is 2000mm, a product with the width specification of 1200mm is rolled, the target convexity is 0.3mm, the distance from the inflection point to the center point of the length of the roll body is (2000-1200)/2=300 mm, the two inflection points are respectively a point with the abscissa of 700mm and a point with the abscissa of 1300mm, and the inflection point of the model curve after adjustment is moved to the position of 700mm +/-100 mm and the position of 1300mm +/-100 mm by adjusting sigma, so that the target model curve is formed.
In the embodiment, the target normal distribution curve is obtained by adjusting the target width, so that a roll shape with proper width is formed conveniently, the accurate control of the width is realized, and the control efficiency of the roll shape is improved.
After the target model curve is obtained, generating a polynomial function from the target model curve, and judging the fitting degree of the polynomial function after the polynomial function is obtained. And if the fitting degree of the polynomial function is not smaller than the fitting degree threshold value, inputting the polynomial function into a machine tool of the target roller to form the roller shape of the target roller. The threshold of the fitting degree is set according to actual requirements, and the threshold of the fitting degree is set to be 0.9 generally.
And if the fitting degree of the polynomial function is smaller than the fitting degree threshold value, generating a new polynomial function from the target model curve until the new polynomial function is input into a machine tool of the target roller to form the roller shape of the target roller when the fitting degree of the new polynomial function is not smaller than the fitting degree threshold value.
In the embodiment, the roll shape of the target roll is generated according to the target model curve to determine the roll shape with proper width and high convexity control capability, so that the control efficiency of the roll shape and the control capability of the plate shape are further improved, narrow-specification products can be conveniently produced in a wide-specification production line, and grinding and consumption of the roll are reduced. After the roll shape of the target roll is formed, an operator can input coordinate values or parameters of a plurality of roll shapes, and the machine tool can execute the roll shape, so that the operation of the operator is facilitated.
As shown in fig. 3, a convex roll shape was used, taking a target roll having a roll length of 2700mm as an example, a target convexity of 0.03mm, and a standard deviation of a target model curve of 0.35. Only line 1 in fig. 3 can be achieved according to the conventional technique, line 1 being a curve of the quadratic term. By the roll shape determining method of the embodiment, the line 2 in fig. 3 can be achieved, the middle deformation is effectively improved, and the control capability of the plate shape is improved.
Example two
Based on the same inventive concept, the second embodiment of the present application also provides a roll shape determining apparatus of convexity control capability, as shown in fig. 4, comprising:
an acquisition module 201 for acquiring a target convexity and a target width of a target roller;
the adjusting module 202 is configured to adjust the model curve through the target convexity after the model curve is established in a roll-shaped coordinate system, so as to obtain an adjusted model curve, where the roll-shaped coordinate system is established in the target roll;
and the target module 203 is configured to adjust the adjusted model curve according to the target width to obtain a target model curve, and obtain a roll shape of the target roll according to the target model curve.
As an alternative embodiment, the adjusting module 202 is configured to build a model curve in a roll coordinate system, and includes:
in the roll-shaped coordinate system, a normal distribution curve is established.
As an optional embodiment, the adjusting module 202, configured to adjust the model curve by using the target convexity, obtain an adjusted model curve, includes:
obtaining a convexity conversion coefficient according to the target convexity and the initial convexity of the model curve;
and obtaining the adjusted model curve according to the convexity conversion coefficient.
As an optional embodiment, the target module 203 is configured to adjust the adjusted model curve by using the target width to obtain a target model curve, and includes:
obtaining an inflection point of the adjusted model curve according to the length of the roller body of the target roller and the target width;
and obtaining the target model curve according to the inflection point of the adjusted model curve.
As an alternative embodiment, the objective module 203 is configured to obtain, according to the objective model curve, a roll shape of the objective roll, and includes:
generating a polynomial function from the target model curve;
and if the fitting degree of the polynomial function is not smaller than the fitting degree threshold value, inputting the polynomial function into a machine tool of the target roller to form a roller shape of the target roller.
As an alternative embodiment, after generating the polynomial function from the target model curve, the method further comprises:
and if the fitting degree of the polynomial function is smaller than the fitting degree threshold value, generating a new polynomial function from the target model curve until the new polynomial function is input into a machine tool of the target roller to form the roller shape of the target roller when the fitting degree of the new polynomial function is not smaller than the fitting degree threshold value.
As an alternative embodiment, the adjusting module 202 is configured to establish the roll-shape coordinate system in the target roll, and includes:
obtaining a coordinate interval according to the length of the roller body of the target roller and the preset point number;
and generating the roll length into the abscissa of the roll shape coordinate system through the coordinate space.
Since the convexity-controllable roll shape determining apparatus described in this embodiment is an apparatus for implementing the convexity-controllable roll shape determining method in embodiment one of the present application, a person skilled in the art will be able to understand the specific implementation of the convexity-controllable roll shape determining apparatus of this embodiment and its various modifications based on the convexity-controllable roll shape determining method described in embodiment one of the present application, and therefore how the convexity-controllable roll shape determining apparatus of this embodiment one of the present application is implemented will not be described in detail herein. The apparatus used by those skilled in the art to implement the roll shape determining method with convexity control capability according to the first embodiment of the present application is within the scope of the present application.
Example III
Based on the same inventive concept, the third embodiment of the present application also provides a computer device, as shown in fig. 5, comprising a memory 304, a processor 302 and a computer program stored on the memory 304 and executable on the processor 302, wherein the processor 302 implements the steps of any one of the roll shape determining methods of convexity control capability described above when executing the program.
Where in FIG. 5, a bus architecture (represented by bus 300), bus 300 may comprise any number of interconnected buses and bridges, with bus 300 linking together various circuits, including one or more processors, represented by processor 302, and memory, represented by memory 304. Bus 300 may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., as are well known in the art and, therefore, will not be described further herein. Bus interface 306 provides an interface between bus 300 and receiver 301 and transmitter 303. The receiver 301 and the transmitter 303 may be the same element, i.e. a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 302 is responsible for managing the bus 300 and general processing, while the memory 304 may be used to store data used by the processor 302 in performing operations.
Example IV
Based on the same inventive concept, the fourth embodiment of the present application also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of any one of the roll shape determining methods of convexity control capability of the previous embodiment.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (7)
1. A roll shape determining method of convexity control capability, comprising:
acquiring a target convexity and a target width of a target roller;
after a normal distribution model curve is established in a roll-shaped coordinate system, a convexity conversion coefficient is obtained according to the target convexity and the initial convexity of the model curve, and the ordinate of each point in the roll-shaped coordinate system is multiplied by the convexity conversion coefficient to obtain an adjusted model curve, wherein the roll-shaped coordinate system is established in the target roll;
and according to the length of the roll body of the target roll and the target width, obtaining an inflection point of the adjusted model curve, adjusting the standard deviation of the model curve according to the inflection point of the adjusted model curve, obtaining a target model curve, and according to the target model curve, obtaining the roll shape of the target roll.
2. The method of claim 1, wherein said deriving a roll shape of said target roll from said target model curve comprises:
generating a polynomial function from the target model curve;
and if the fitting degree of the polynomial function is not smaller than the fitting degree threshold value, inputting the polynomial function into a machine tool of the target roller to form a roller shape of the target roller.
3. The method of claim 2, further comprising, after generating the target model curve as a polynomial function:
and if the fitting degree of the polynomial function is smaller than the fitting degree threshold value, generating a new polynomial function from the target model curve until the new polynomial function is input into a machine tool of the target roller to form the roller shape of the target roller when the fitting degree of the new polynomial function is not smaller than the fitting degree threshold value.
4. The method of claim 1, wherein establishing the roll-form coordinate system in the target roll comprises:
obtaining a coordinate interval according to the length of the roller body of the target roller and the preset point number;
and generating the roll length into the abscissa of the roll shape coordinate system through the coordinate space.
5. A convexity control capable roll shape determining apparatus, comprising:
the acquisition module is used for acquiring the target convexity and the target width of the target roller;
the adjusting module is used for obtaining a convexity conversion coefficient according to the target convexity and the initial convexity of the model curve after the forward distribution model curve is established in the roll-shaped coordinate system, multiplying the ordinate of each point in the roll-shaped coordinate system by the convexity conversion coefficient to obtain an adjusted model curve, wherein the roll-shaped coordinate system is established in the target roll;
and the target module is used for obtaining the inflection point of the adjusted model curve according to the length of the roller body of the target roller and the target width, adjusting the standard deviation of the model curve according to the inflection point of the adjusted model curve to obtain a target model curve, and obtaining the roller shape of the target roller according to the target model curve.
6. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method steps of any of claims 1-4 when the program is executed.
7. A computer readable storage medium having stored thereon a computer program, characterized in that the program when executed by a processor realizes the method steps of any of claims 1-4.
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