CN111515449B - Pipe cutting combination method and system - Google Patents
Pipe cutting combination method and system Download PDFInfo
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- CN111515449B CN111515449B CN202010318062.2A CN202010318062A CN111515449B CN 111515449 B CN111515449 B CN 111515449B CN 202010318062 A CN202010318062 A CN 202010318062A CN 111515449 B CN111515449 B CN 111515449B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D21/00—Machines or devices for shearing or cutting tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D33/00—Accessories for shearing machines or shearing devices
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Abstract
The invention provides a pipe cutting combination method and a pipe cutting combination system, which belong to the technical field of steel pipe cutting, and the pipe cutting combination method comprises the following steps: removing the length of the butt joint from the total length, and taking the removed result as the length of the target steel pipe; and the unit lengths correspond to the array elements one by one, the array elements are randomly combined to determine various pipe cutting schemes, and the total pipe cutting length corresponding to the array elements in the pipe cutting schemes is calculated. And solving the minimum distance value between the pipe end of each prefabricated steel pipe and the steel coil opposite head in the scheme to be tested, and adding the plurality of minimum distance values determined in each scheme to be tested to determine the total deviation value. And taking the scheme to be tested corresponding to the minimum total deviation value as a target pipe cutting scheme. The present application further provides a pipe cutting system. The pipe cutting combination method and the pipe cutting combination system can find out the optimal pipe cutting scheme on the basis of determining the length of the steel coil and the opposite position of the steel coil, reduce the loss of the steel coil, improve the product quality of the steel coil and reduce the production cost.
Description
Technical Field
The invention belongs to the technical field of steel pipe cutting, and particularly relates to a pipe cutting combination method and system.
Background
In the one-step production process of the spiral welded pipe, after the steel pipe is welded and formed inside and outside, the steel pipe needs to be cut into steel pipes with different unit lengths by pipe cutting equipment, and the steel pipes are conveyed to a steel pipe finishing area to be processed into qualified steel pipes. In the process, the operations of adjusting the sizing position, confirming the sizing length value, synchronizing the pipe cutting follow-up mechanism, cutting arc starting and stopping, quickly separating a conveying roller way and the like are required.
Because the length that every coil of strip can make the steel pipe is different to the steel pipe is continuous production, consequently need be with a plurality of coils of strip end to end connection. After the steel pipe cutting is completed, the steel coil on the steel pipe needs to be cut off in an opposite way, so that the sequence of pipe cutting needs to be optimized, and the steel coil is arranged at the end part of the prefabricated steel pipe in an opposite way as far as possible on the basis of reducing the residual steel materials, so that the subsequent processing is facilitated. At present, each steel pipe is provided with a margin, but the use amount of steel materials is large, and finally the cost is high.
Disclosure of Invention
The invention aims to provide a pipe cutting combination method and a pipe cutting combination system, and aims to solve the problem that the use amount of steel materials is large and the cost is high due to the fact that allowance is arranged on each steel pipe.
In order to achieve the purpose, the invention adopts the technical scheme that: providing a cut tube assembly method comprising:
determining the total length of the prefabricated steel pipe according to the lengths of the steel coils and preset forming angles, and determining the butt length according to the width of the steel coils and the forming angles;
removing the length of the butt joint from the total length, and taking the removed result as the length of the target steel pipe; selecting a plurality of unit lengths of the prefabricated steel pipe;
the unit lengths correspond to the array elements one by one, the array elements are randomly combined to determine various pipe cutting schemes, and the total pipe cutting length corresponding to the array elements in the pipe cutting schemes is calculated;
when the total pipe cutting length meets the preset requirement of the target steel pipe length, taking a pipe cutting scheme corresponding to the total pipe cutting length as a scheme to be tested;
calculating the minimum distance value between the pipe end of each prefabricated steel pipe and the steel coil opposite head in the scheme to be tested, and adding a plurality of the minimum distance values determined in each scheme to be tested to determine a total deviation value;
and taking the scheme to be tested corresponding to the minimum total deviation value as a target pipe cutting scheme.
As another embodiment of the present application, the total length is calculated by the following formula:
L2＝L1×cosα
wherein L is2Denotes the total length, L, of the prefabricated steel pipe1Denotes the total length of the steel coil and α denotes the forming angle of the prefabricated steel pipe.
As another embodiment of the present application, the calculation formula of the pair head length is:
L4＝L3×sinα
wherein L is4Represents the length of the butt joint, L, of the steel pipe3Represents the width of the steel coil and alpha represents the forming angle of the prefabricated steel pipe.
As another embodiment of the present application, the calculation formula of the target steel pipe length is as follows:
L5＝L2-(m-1)×L4
wherein L is5Represents the target steel pipe length, and m represents the number of the steel coils.
As another embodiment of the present application, randomly combining a plurality of the array elements to determine a plurality of pipe cutting schemes, and calculating a total pipe cutting length corresponding to the plurality of the array elements in the pipe cutting schemes includes:
randomly arranging and combining the array elements, and taking the arrangement sequence of the array elements as the pipe cutting scheme;
and summing unit lengths corresponding to a plurality of array elements in the pipe cutting scheme, and taking the summed result as the total pipe cutting length.
As another embodiment of the present application, when the total pipe cutting length meets the preset requirement of the target steel pipe length, taking the pipe cutting scheme corresponding to the total pipe cutting length as a scheme to be tested includes:
when the total pipe cutting length is smaller than the target steel pipe length, randomly adding array elements and solving a new total pipe cutting length after the array elements are added; and arranging the new array elements determined when the array elements are added last as the scheme to be tested until the total length of the new cut pipe is greater than the length of the target steel pipe.
As another embodiment of the present application, the obtaining of the minimum distance value from the pipe end of each prefabricated steel pipe to the steel coil end in the scheme to be tested includes:
calibrating the total length of the prefabricated steel pipe on a numerical axis; setting one end of the total length as a starting point;
calibrating unit lengths corresponding to the array elements in the scheme to be tested on the number axis in sequence from the starting point along the length direction of the total length;
calibrating the pipe end of each steel pipe and the opposite position of the steel coil on the plurality of shafts;
and solving the minimum distance value between each pipe end on the digital shaft and the steel coil butt joint.
As another embodiment of the present application, calibrating, on the axis, the unit lengths corresponding to the array elements in the solution to be measured sequentially from the starting point along the length direction of the total length includes:
calibrating the unit lengths corresponding to the array elements on the axis in sequence according to the array element sequence determined in the scheme to be tested;
and calibrating the end point of each unit length on the axes as the position of the pipe end.
The pipe cutting combination method provided by the invention has the beneficial effects that: compared with the prior art, the pipe cutting combination method provided by the invention has the advantages that the total length of the prefabricated steel pipe is determined according to the lengths of the steel coils and the preset forming angle, and the opposite length is determined according to the width of the steel coils and the forming angle. Removing the length of the butt joint from the total length, and taking the removed result as the length of the target steel pipe; and selecting unit lengths of a plurality of prefabricated steel pipes. And the unit lengths correspond to the array elements one by one, the array elements are randomly combined to determine various pipe cutting schemes, and the total pipe cutting length corresponding to the array elements in the pipe cutting schemes is calculated. And when the total pipe cutting length meets the preset requirement of the target steel pipe length, taking the pipe cutting scheme corresponding to the total pipe cutting length as the scheme to be tested. And solving the minimum distance value between the pipe end of each prefabricated steel pipe and the steel coil opposite head in the scheme to be tested, and adding the plurality of minimum distance values determined in each scheme to be tested to determine the total deviation value. And taking the scheme to be tested corresponding to the minimum total deviation value as a target pipe cutting scheme. The steel coil end-to-end length does not exist in the target steel pipe length in the application, so that the problem that feasibility is reduced due to the steel coil end-to-end length when a pipe cutting scheme is determined is solved. And the determined scheme to be tested can meet the preset requirement of the length of the target steel pipe to the maximum extent, the scheme that the end of the prefabricated steel pipe is closest to the opposite end of the steel coil is used as the target pipe cutting scheme, and the optimal pipe cutting scheme can be found on the basis of determining the length of the steel coil and the opposite end position of the steel coil, so that the loss of the steel coil is reduced, the product quality of the steel coil is improved, and the production cost is reduced.
A second aspect of an embodiment of the present invention provides a pipe cutting system, including:
the calculation module is used for determining the total length and the butt length of the prefabricated steel pipe according to the length and the width of the steel coil and a preset forming angle;
the determining module is used for eliminating the butt length in the total length and determining the length of the target steel pipe after the butt length is eliminated; determining a plurality of unit lengths of the prefabricated steel pipe simultaneously;
the combination module is used for corresponding the unit lengths to the array elements one by one and randomly combining the array elements to determine various pipe cutting schemes;
the selection module is used for calculating the total pipe cutting length corresponding to the array elements in the pipe cutting scheme; when the total pipe cutting length meets the preset requirement of the target steel pipe length, taking a pipe cutting scheme corresponding to the total pipe cutting length as a scheme to be tested;
and the summation module is used for solving the minimum distance value between the pipe end of each prefabricated steel pipe in the scheme to be tested and the steel coil opposite head, adding the plurality of the minimum distance values determined in each scheme to be tested to determine a total deviation value, and taking the scheme to be tested corresponding to the minimum total deviation value as a target pipe cutting scheme.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a flowchart of a pipe cutting combination method according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a method and a system for combining pipe cutting according to the present invention will now be described. The pipe cutting combination method comprises the following steps:
and determining the total length of the prefabricated steel pipe according to the lengths of the steel coils and the preset forming angle, and determining the opposite length according to the width of the steel coils and the forming angle.
Removing the length of the butt joint from the total length, and taking the removed result as the length of the target steel pipe; and selecting a plurality of unit lengths of the prefabricated steel pipe.
And the unit lengths correspond to the array elements one by one, the array elements are randomly combined to determine various pipe cutting schemes, and the total pipe cutting length corresponding to the array elements in the pipe cutting schemes is calculated.
And when the total pipe cutting length meets the preset requirement of the target steel pipe length, taking the pipe cutting scheme corresponding to the total pipe cutting length as the scheme to be tested.
And solving the minimum distance value between the pipe end of each prefabricated steel pipe and the steel coil opposite head in the scheme to be tested, and adding the plurality of minimum distance values determined in each scheme to be tested to determine the total deviation value.
And taking the scheme to be tested corresponding to the minimum total deviation value as a target pipe cutting scheme.
The pipe cutting combination method provided by the invention has the beneficial effects that: compared with the prior art, the pipe cutting combination method provided by the invention has the advantages that the total length of the prefabricated steel pipe is determined according to the lengths of the steel coils and the preset forming angle, and the opposite length is determined according to the width of the steel coils and the forming angle. Removing the length of the butt joint from the total length, and taking the removed result as the length of the target steel pipe; and selecting unit lengths of a plurality of prefabricated steel pipes. And the unit lengths correspond to the array elements one by one, the array elements are randomly combined to determine various pipe cutting schemes, and the total pipe cutting length corresponding to the array elements in the pipe cutting schemes is calculated. And when the total pipe cutting length meets the preset requirement of the target steel pipe length, taking the pipe cutting scheme corresponding to the total pipe cutting length as the scheme to be tested. And solving the minimum distance value between the pipe end of each prefabricated steel pipe and the steel coil opposite head in the scheme to be tested, and adding the plurality of minimum distance values determined in each scheme to be tested to determine the total deviation value. And taking the scheme to be tested corresponding to the minimum total deviation value as a target pipe cutting scheme. The steel coil end-to-end length does not exist in the target steel pipe length in the application, so that the problem that feasibility is reduced due to the steel coil end-to-end length when a pipe cutting scheme is determined is solved. And the determined scheme to be tested can meet the preset requirement of the length of the target steel pipe to the maximum extent, the scheme that the end of the prefabricated steel pipe is closest to the opposite end of the steel coil is used as the target pipe cutting scheme, and the optimal pipe cutting scheme can be found on the basis of determining the length of the steel coil and the opposite end position of the steel coil, so that the loss of the steel coil is reduced, the product quality of the steel coil is improved, and the production cost is reduced.
As a specific implementation manner of the pipe cutting combination method provided by the present invention, the total length is calculated by the following formula:
L2＝L1×cosα
wherein L is2Denotes the total length of the prefabricated steel pipe, L1The total length of the steel coil is shown, and α represents the forming angle of the prefabricated steel pipe.
In this application, the width and the length of coil of strip are the known value to the shaping angle of the spiral steel pipe of making is the default. Wherein the molding angle is expressed as:
wherein, B represents the thickness of the strip steel in the steel coil, D represents the pitch diameter of the steel coil, and alpha represents the forming angle of the prefabricated steel pipe. After the steel coil is welded inside and outside to form the spiral steel pipe, the total length L is2Indicating the length along the axis of the coiled steel tube. The unit lengths are different from each other, and the unit lengths of the matched steel pipes are specifically selected according to the information such as the length of the steel coil before cutting.
As a specific implementation manner of the pipe cutting combination method provided by the present invention, a calculation formula of the butt length is as follows:
L4＝L3×sinα
wherein L is4Indicates the length of the steel pipe in the opposite direction, L3The width of the steel coil is shown, and alpha represents the forming angle of the prefabricated steel pipe.
In this application, before the coil of strip is aligned to needs to be amputated, the length of coil of strip alignment needs to be determined. Because the spiral steel pipe is produced continuously, the tail of one steel coil needs to be welded with the head of the next steel coil after the steel coil is processed. Because the butt joint needs to be cut off in the subsequent processing, the butt joint of the steel coil needs to be kept at the end part of the steel pipe as much as possible, so that the reliability of connection between the side edges of the steel coil is ensured, and the cracking of the butt joint is avoided. Because the influence of the steel coil on the head-to-head length needs to be considered in advance, the head-to-head length of the steel coil needs to be subtracted on the basis of the total length of the steel pipe when the number of the cut pipes is determined.
As a specific embodiment of the pipe cutting combination method provided by the present invention, a calculation formula of the target steel pipe length is as follows:
L5＝L2-(m-1)×L4
wherein L is5Represents the target steel pipe length, and m represents the number of steel coils.
In this application, spiral steel pipe is continuous production, consequently need form a whole with the end-to-end connection of a plurality of coils of strip. Finally, when the end of the cut steel coil is butt-jointed, the end needs to be cut off, and the final length of the steel pipe is shortened. If the m steel coils are connected end to end, m-1 steel coils are generated in total. Therefore, in the application, on the basis of the total length, m-1 butt lengths are subtracted, namely the arrangement and combination of the pipe cutting sequence of the steel pipe are carried out under the condition that the butt has been cut, the m-1 butt lengths which are removed in advance can be supplemented to the unit length of the steel pipe before the final cutting, the supplemented butt lengths can be changed relative to the position in the prefabricated steel pipe, the steel coil can be aligned and adjusted to the pipe end of the prefabricated steel pipe on the basis that the pipe end of the steel pipe is close to the butt of the steel coil, and the removed butt lengths can supplement the reduction of the length of the steel pipe caused by the fact that the steel coil is cut. In the finally determined target pipe cutting scheme, the steel coil is not always positioned at the end part of the prefabricated steel pipe, so that the rejected butt length needs to be reasonably distributed before actual pipe cutting, and more pipe ends of the prefabricated steel pipe are close to the steel coil butt.
As a specific implementation manner of the pipe cutting combination method provided by the present invention, randomly combining a plurality of array elements to determine a plurality of pipe cutting schemes, and calculating the total pipe cutting length corresponding to the plurality of array elements in the pipe cutting schemes includes:
and randomly arranging and combining the array elements, and taking the arrangement sequence of the array elements as a pipe cutting scheme.
And summing unit lengths corresponding to a plurality of array elements in the pipe cutting scheme, and taking the summed result as the total pipe cutting length.
In the application, the total length of a plurality of steel coils manufactured into the steel coils can be known, but how to arrange the sequence of pipe cutting is required, so that more opposite positions of the steel coils are distributed at the pipe ends of the prefabricated steel pipes and need to be determined through random and free arrangement and combination, and the sequence of the plurality of arrangements is compared. The unit length of the prefabricated steel pipes is different, and each unit length is used as an independent array element. Examples are: if there are p unit lengths, there are p choices for cutting out the first steel pipe, and there are still p when the second steel pipe is cut, and the resulting cut pipe sequence has a total of p2And there is no correlation between each array element. However, because the total length is fixed, the array elements cannot be arranged without termination, the pipe cutting lengths corresponding to the random elements are respectively obtained while the array elements are randomly arranged, the pipe cutting lengths corresponding to the random elements are summed after the array elements are sequentially arranged, and the summed result is used as the determined total pipe cutting length.
As a specific implementation manner of the pipe cutting combination method provided by the present invention, when the total pipe cutting length meets the preset requirement of the target steel pipe length, taking the pipe cutting scheme corresponding to the total pipe cutting length as the scheme to be tested includes:
when the total pipe cutting length is smaller than the target steel pipe length, randomly adding array elements and solving a new total pipe cutting length after the array elements are added; and arranging the new array elements determined when the array elements are added last as the scheme to be tested until the total length of the new cut pipe is greater than the length of the target steel pipe.
In the application, the unit length corresponding to each array element is calculated while the array elements are randomly combined, and the total pipe cutting total length corresponding to the array elements is obtained. And when the total length of the new cut pipe is greater than the length of the target steel pipe, taking the original array element arrangement as a scheme to be tested. And when the total length of the new cut pipe is still smaller than the length of the target steel pipe, randomly adding the array elements again on the basis of the new array element arrangement until the requirements are met. The pipe cutting scheme determined by the method can ensure that steel materials are saved to the maximum extent on the basis of the target steel pipe length, thereby avoiding the waste of materials and reducing the production cost.
As a specific implementation manner of the pipe cutting combination method provided by the present invention, the obtaining of the minimum distance value from the pipe end of each prefabricated steel pipe to the steel coil end in the to-be-measured scheme includes:
calibrating the total length of the prefabricated steel pipe on a numerical axis; one end of the total length is set as a starting point.
And calibrating the unit length corresponding to each array element in the scheme to be tested on a number axis in sequence along the length direction of the total length from the starting point as the starting point.
And calibrating the pipe ends of the steel pipes and the opposite positions of the steel coils on the plurality of axes.
And solving the minimum distance value between each pipe end on the digital axis and the steel coil butt.
In the application, after the scheme to be tested is determined, the positions of the pipe ends set in the scheme to be tested, which are far away from the steel coil butt, need to be calculated. For convenience of calculation, the total length and each unit length in the scheme to be measured are sequentially calibrated on a numerical axis according to a certain proportion. Firstly, setting a number axis, calibrating the total length obtained by calculation on the number axis, and then sequentially calibrating on the number axis by taking an end point of the total length, namely the air cushion, as a starting point according to the sequence of array elements determined in a scheme to be measured. And calibrating the positions of the steel coil opposite ends relative to the total length of the prefabricated steel pipe in an equal proportion at the corresponding positions of the digital axes. And sequentially calculating the distance between each pipe end and the opposite end of the steel coil, and determining the minimum value of the distance. And adding the minimum values of the distance from the multiple steel coil pairs in the axial direction to determine the total deviation value of the distance from the steel coil pairs of the scheme to be tested.
As a specific implementation manner of the pipe cutting combination method provided by the present invention, sequentially calibrating unit lengths corresponding to each array element in the scheme to be tested on the number axis along the length direction of the total length from the starting point as the starting point comprises:
and calibrating the unit lengths corresponding to the array elements on the data axis in sequence according to the array element sequence determined in the scheme to be tested.
The end point of each unit length on the number axis is marked as the position of the pipe end.
In the application, because the final determination of each scheme to be tested is the arrangement of the array elements, when calibration is performed, the calibration is performed sequentially by starting from the starting point in the total length according to the unit length corresponding to each array element. The connection point of the two array elements corresponds to the position of the pipe end. Because the unit length, the total length and the position of the opposite ends of the steel coil are all represented by a number axis, the distance from the end of the pipe to the opposite ends of the steel coil is convenient to determine.
It is another object of the present application to provide a pipe cutting system comprising:
and the calculation module is used for determining the total length and the butt length of the prefabricated steel pipe according to the length and the width of the steel coil and the preset forming angle.
The determining module is used for eliminating the butt length on the total length and determining the length of the target steel pipe after the butt length is eliminated; and simultaneously determining a plurality of unit lengths of the prefabricated steel pipe.
And the combination module is used for corresponding the unit lengths to the array elements one by one and randomly combining the array elements to determine various pipe cutting schemes.
And the selection module is used for calculating the total pipe cutting length corresponding to the array elements in the pipe cutting scheme.
And when the total pipe cutting length meets the preset requirement of the target steel pipe length, taking the pipe cutting scheme corresponding to the total pipe cutting length as the scheme to be tested.
And the summation module is used for solving the minimum distance value between the pipe end of each prefabricated steel pipe and the steel coil opposite head in the scheme to be tested, adding the plurality of minimum distance values determined in each scheme to be tested to determine a total deviation value, and taking the scheme to be tested corresponding to the minimum total deviation value as a target pipe cutting scheme.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the system is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the above-mentioned apparatus may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed pipe cutting combination method and system can be implemented in other ways. For example, the above-described embodiments of the pipe cutting and combining method are merely illustrative, and for example, a module or a unit may be divided into only one logic function, and may be actually implemented in another way, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow in the method according to the embodiments described above may be implemented by a computer program, which is stored in a computer readable storage medium and used by a processor to implement the steps of the embodiments of the methods described above. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, recording medium, U.S. disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution media, and the like. It should be noted that the computer readable medium may include any suitable increase or decrease as required by legislation and patent practice in the jurisdiction, for example, in some jurisdictions, computer readable media may not include electrical carrier signals and telecommunications signals in accordance with legislation and patent practice.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A pipe cutting combination method is characterized by comprising the following steps:
determining the total length of the prefabricated steel pipe according to the lengths of the steel coils and preset forming angles, and determining the butt length according to the width of the steel coils and the forming angles;
removing the length of the butt joint from the total length, and taking the removed result as the length of the target steel pipe; selecting a plurality of unit lengths of the prefabricated steel pipe;
the unit lengths correspond to the array elements one by one, the array elements are randomly combined to determine various pipe cutting schemes, and the total pipe cutting length corresponding to the array elements in the pipe cutting schemes is calculated;
when the total pipe cutting length is smaller than the target steel pipe length, randomly adding array elements and solving a new total pipe cutting length after the array elements are added; arranging the new array elements determined when the array elements are added last as a scheme to be tested until the total length of the new cut pipe is greater than the length of the target steel pipe;
calculating the minimum distance value between the pipe end of each prefabricated steel pipe and the steel coil opposite head in the scheme to be tested, and adding a plurality of the minimum distance values determined in each scheme to be tested to determine a total deviation value;
and taking the scheme to be tested corresponding to the minimum total deviation value as a target pipe cutting scheme.
2. The pipe cutting assembly method of claim 1, wherein the total length is calculated by the formula:
L2＝L1×cosα
wherein L is2Denotes the total length, L, of the prefabricated steel pipe1Denotes the total length of the steel coil and α denotes the forming angle of the prefabricated steel pipe.
3. The pipe cutting combination method according to claim 2, wherein the calculation formula of the butt length is:
L4＝L3×sinα
wherein L is4Represents the length of the butt joint, L, of the steel pipe3Represents the width of the steel coil and alpha represents the forming angle of the prefabricated steel pipe.
4. The pipe cutting combination method according to claim 3, wherein the calculation formula of the target steel pipe length is:
L5＝L2-(m-1)×L4
wherein L is5Represents the target steel pipe length, and m represents the number of the steel coils.
5. The pipe cutting combination method of claim 4, wherein the plurality of array elements are randomly combined to determine a plurality of pipe cutting schemes, and the calculating of the total pipe cutting length corresponding to the plurality of array elements in the pipe cutting schemes comprises:
randomly arranging and combining the array elements, and taking the arrangement sequence of the array elements as the pipe cutting scheme;
and summing unit lengths corresponding to a plurality of array elements in the pipe cutting scheme, and taking the summed result as the total pipe cutting length.
6. The pipe cutting combination method according to claim 1, wherein the obtaining of the minimum distance value from the end of each prefabricated steel pipe to the end of the steel coil in the scheme to be tested comprises:
calibrating the total length of the prefabricated steel pipe on a numerical axis; setting one end of the total length as a starting point;
calibrating unit lengths corresponding to the array elements in the scheme to be tested on the number axis in sequence from the starting point along the length direction of the total length;
calibrating the pipe end of each steel pipe and the opposite position of the steel coil on the plurality of shafts;
and solving the minimum distance value between each pipe end on the digital shaft and the steel coil butt joint.
7. The pipe cutting combination method of claim 6, wherein calibrating unit lengths corresponding to each of the plurality of groups of elements in the solution to be tested on the axis in sequence from the starting point along the length direction of the total length comprises:
calibrating the unit lengths corresponding to the array elements on the axis in sequence according to the array element sequence determined in the scheme to be tested;
and calibrating the end point of each unit length on the axes as the position of the pipe end.
8. Pipe cutting system, its characterized in that includes:
the calculation module is used for determining the total length and the butt length of the prefabricated steel pipe according to the length and the width of the steel coil and a preset forming angle;
the determining module is used for eliminating the butt length in the total length and determining the length of the target steel pipe after the butt length is eliminated; determining a plurality of unit lengths of the prefabricated steel pipe simultaneously;
the combination module is used for corresponding the unit lengths to the array elements one by one and randomly combining the array elements to determine various pipe cutting schemes;
the selection module is used for calculating the total pipe cutting length corresponding to the array elements in the pipe cutting scheme; when the total pipe cutting length is smaller than the target steel pipe length, randomly adding array elements and solving a new total pipe cutting length after the array elements are added; arranging the new array elements determined when the array elements are added last as a scheme to be tested until the total length of the new cut pipe is greater than the length of the target steel pipe;
and the summation module is used for solving the minimum distance value between the pipe end of each prefabricated steel pipe in the scheme to be tested and the steel coil opposite head, adding the plurality of the minimum distance values determined in each scheme to be tested to determine a total deviation value, and taking the scheme to be tested corresponding to the minimum total deviation value as a target pipe cutting scheme.
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