CN111468806B - Automatic pipe cutting method for spiral welded pipe - Google Patents
Automatic pipe cutting method for spiral welded pipe Download PDFInfo
- Publication number
- CN111468806B CN111468806B CN202010316568.XA CN202010316568A CN111468806B CN 111468806 B CN111468806 B CN 111468806B CN 202010316568 A CN202010316568 A CN 202010316568A CN 111468806 B CN111468806 B CN 111468806B
- Authority
- CN
- China
- Prior art keywords
- length
- pipe
- cutting
- target
- pipe cutting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K10/00—Welding or cutting by means of a plasma
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
Abstract
The invention provides an automatic pipe cutting method for a spiral welded pipe, which belongs to the technical field of welded pipe cutting and comprises the following steps: determining the total length of the prefabricated welded pipe according to the length of the steel coil and a preset forming angle; selecting a plurality of unit lengths of the prefabricated welded pipe. And when the steel coil does not need to be cut in opposite directions, determining the number of target cut pipes in the total length range according to a plurality of unit lengths. When the steel coil is required to be cut off in an opposite manner, the opposite length is determined by the width and the forming angle of the steel coil, and the number of target pipe cutting is determined within the range of eliminating the opposite length according to the total length of a plurality of unit lengths. And sequentially cutting the spiral welded pipe according to the unit length corresponding to the target pipe cutting number, and determining the residual length of the spiral welded pipe for being connected with the next steel coil. The automatic pipe cutting method for the spiral welded pipe provided by the invention avoids the problem that the waste of steel materials is easily caused by longer length of the residual steel coil when the pipe cutting length is manually controlled, and further reduces the production cost of the steel coil.
Description
Technical Field
The invention belongs to the technical field of welded pipe cutting, and particularly relates to an automatic pipe cutting method for a spiral welded pipe.
Background
In the one-step production process of the prefabricated welded pipe, after the welded pipe is welded and formed inside and outside, the welded pipe needs to be cut into welded pipes with different unit lengths by pipe cutting equipment, and the welded pipes are conveyed to a welded pipe finishing area and processed into qualified welded 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 welded tube is different to a plurality of coils of strip need be to the end connection, the length of cutting the pipe at every turn of traditional adoption manual input, but because the length of welded tube and the corresponding radical of cutting the pipe all can't be expected, the result that causes is that remaining steel material is too much, and the wasting of resources is comparatively serious, finally leads to manufacturing cost higher.
Disclosure of Invention
The invention aims to provide an automatic pipe cutting method for a spiral welded pipe, and aims to solve the problems that the number of cut pipes and the lengths of a plurality of corresponding welded pipes cannot be predicted, so that the residual steel is excessive, the resource waste is serious, and the production cost is high.
In order to achieve the purpose, the invention adopts the technical scheme that: the method for automatically cutting the spiral welded pipe comprises the following steps:
determining the total length of the prefabricated welded pipe according to the length of the steel coil and a preset forming angle; selecting a plurality of unit lengths of the prefabricated welded pipe;
when the opposite ends of the steel coil do not need to be cut off, determining the target tube cutting number of the welded tube within the range of the total length according to the unit lengths;
when the steel coil is required to be cut off in an opposite manner, determining the opposite length according to the width of the steel coil and the forming angle, and determining the number of target pipe cutting in the range of removing the opposite length in the total length according to a plurality of unit lengths;
and processing and manufacturing the steel coil into a spiral welded pipe, sequentially cutting the spiral welded pipe according to the unit length corresponding to the target pipe cutting number, and determining the residual length of the spiral welded pipe for connecting with the next steel coil.
As another embodiment of the present application, sequentially cutting the spiral welded pipe according to the unit length corresponding to the target pipe cutting number includes:
measuring the length of the spiral welded pipe by using a sizing trolley;
and when the length of the spiral welded pipe is the same as the corresponding unit length, controlling the pipe cutting mechanism to cut the pipe.
As another embodiment of the present application, the total length is calculated by the following formula:
L2＝L1×cosα
wherein L is2Indicating said total length of the pre-welded tube, L1Representing the length of the coil of steel and alpha representing the forming angle of the pre-welded tube.
As another embodiment of the present application, the determining the number of target pipe cuts within the total length according to the plurality of unit lengths includes:
determining a second value range of the number of the cut pipes according to the total length and a plurality of unit lengths; determining the total pipe cutting length corresponding to different pipe cutting numbers in the second value range;
and selecting the maximum value smaller than the total length in the total pipe cutting length as the target welded pipe length, wherein the number of welded pipes corresponding to the target welded pipe length is the target pipe cutting number.
As another embodiment of the present application, an expression of the second value range is:
wherein n represents the number of cut tubes, L5Represents the minimum of a plurality of said unit lengths, L6Represents the maximum of a plurality of said unit lengths.
As another embodiment of the present application, the calculation formula of the pair head length is:
L4＝L3×sinα
wherein L is4Indicates the length of the butt, L3Representing said coil of steelThe width, a, represents the forming angle of the pre-welded tube.
As another embodiment of the present application, the determining the number of target pipe cuts within a range of the total length excluding the butt length according to a plurality of unit lengths includes:
determining a first value range of the number of cut pipes on the basis of eliminating the length of the butt joint from the total length; determining the total pipe cutting length corresponding to different pipe cutting numbers in the first value range;
and selecting the maximum value smaller than the total length in the total pipe cutting length as the target welded pipe length, wherein the number of welded pipes corresponding to the target welded pipe length is the target pipe cutting number.
As another embodiment of the present application, an expression of the first value range is:
wherein n represents the number of cut tubes, L5Represents the minimum of a plurality of said unit lengths, L6Represents the maximum of a plurality of said unit lengths.
As another embodiment of the present application, after determining the remaining length of the spiral welded pipe for connecting with the next coil of steel, the method comprises:
determining the cutting surplus L of the welded pipe according to the total length and the final pipe cutting length7；
From the cutting residual quantity L7Determining a corrected total length according to the total length of the next steel coil, and determining the number of corrected cut tubes according to the corrected total length;
the corrected total length is:
L8＝L9+L7
wherein L is8Denotes the corrected total length, L9The total length of the next coil is shown.
As another embodiment of the present application, the expression for correcting the value range of the number of pipe cuts includes:
when the steel coil does not need to be cut off in opposite directions,
when the steel coil needs to be cut off in opposite directions,
wherein n is1And representing the number of the corrected cut tubes.
The automatic pipe cutting method for the spiral welded pipe provided by the invention has the beneficial effects that: compared with the prior art, the automatic pipe cutting method for the spiral welded pipe comprises the step of determining the total length of the prefabricated welded pipe according to the length of the steel coil and the preset forming angle. A plurality of unit lengths of the pre-welded tube are determined prior to cutting the tube. When the steel coils do not need to be cut in opposite directions, the target tube cutting number of the welded tubes is determined in the range of the total length according to a plurality of unit lengths. When the steel coil is required to be cut off in an opposite manner, the opposite length is determined by the width and the forming angle of the steel coil, and the number of target pipe cutting is determined within the range of eliminating the opposite length according to the total length of a plurality of unit lengths. The steel coil is processed into the spiral welded pipe, the spiral welded pipe is sequentially cut according to the unit length corresponding to the target pipe cutting number, and the remaining length of the spiral welded pipe for being connected with the next steel coil is determined. Can determine welded tube total length before cutting the pipe in this application, according to whether the different methods of the coil of strip butt-lift suggestion determination target pipe root number of cutting, cut the corresponding unit length of pipe root number of cutting according to the target and cut the spiral welded tube in proper order, need not the artifical length of manual input welded tube in proper order, simultaneously cut pipe root number and unit length according to the target and can determine the surplus length of spiral welded tube, because the welded tube is continuous production, the total length through analyzing next coil of strip combines surplus length, can circulate and determine next target pipe root number of cutting, on the basis of guaranteeing continuous production, determine reasonable pipe root number of cutting, when having avoided manual control pipe length of cutting, easily cause the longer extravagant problem of the steel material that causes of surplus coil of strip length, and then the manufacturing cost of coil of strip has been reduced.
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 an automatic pipe cutting method for a spiral welded pipe 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, the automatic tube cutting method for spiral welded tubes according to the present invention will now be described. The automatic pipe cutting method for the spiral welded pipe comprises the following steps:
determining the total length of the prefabricated welded pipe according to the length of the steel coil and a preset forming angle; selecting a plurality of unit lengths of the prefabricated welded pipe.
When the steel coil is not required to be cut in opposite directions, the target tube cutting number of the welded tube is determined in the total length range according to a plurality of unit lengths.
When the steel coil is required to be cut off in an opposite manner, the opposite length is determined by the width and the forming angle of the steel coil, and the number of target pipe cutting is determined within the range of eliminating the opposite length according to the total length of a plurality of unit lengths.
The steel coil is processed into the spiral welded pipe, the spiral welded pipe is sequentially cut according to the unit length corresponding to the target pipe cutting number, and the remaining length of the spiral welded pipe for being connected with the next steel coil is determined.
The automatic pipe cutting method for the spiral welded pipe provided by the invention has the beneficial effects that: compared with the prior art, the automatic pipe cutting method for the spiral welded pipe comprises the step of determining the total length of the prefabricated welded pipe according to the length of the steel coil and the preset forming angle. A plurality of unit lengths of the pre-welded tube are determined prior to cutting the tube. When the steel coils do not need to be cut in opposite directions, the target tube cutting number of the welded tubes is determined in the range of the total length according to a plurality of unit lengths. When the steel coil is required to be cut off in an opposite manner, the opposite length is determined by the width and the forming angle of the steel coil, and the number of target pipe cutting is determined within the range of eliminating the opposite length according to the total length of a plurality of unit lengths. The steel coil is processed into the spiral welded pipe, the spiral welded pipe is sequentially cut according to the unit length corresponding to the target pipe cutting number, and the remaining length of the spiral welded pipe for being connected with the next steel coil is determined. Can determine welded tube total length before cutting the pipe in this application, according to whether the different methods of the coil of strip butt-lift suggestion determination target pipe root number of cutting, cut the corresponding unit length of pipe root number of cutting according to the target and cut the spiral welded tube in proper order, need not the artifical length of manual input welded tube in proper order, simultaneously cut pipe root number and unit length according to the target and can determine the surplus length of spiral welded tube, because the welded tube is continuous production, the total length through analyzing next coil of strip combines surplus length, can circulate and determine next target pipe root number of cutting, on the basis of guaranteeing continuous production, determine reasonable pipe root number of cutting, when having avoided manual control pipe length of cutting, easily cause the longer extravagant problem of the steel material that causes of surplus coil of strip length, and then the manufacturing cost of coil of strip has been reduced.
As a specific embodiment of the automatic pipe cutting method for the spiral welded pipe provided by the present invention, sequentially cutting the spiral welded pipe according to a unit length corresponding to a target pipe cutting number comprises:
the length of the spiral welded pipe is measured by a sizing trolley.
And when the length of the spiral welded pipe is the same as the corresponding unit length, controlling the pipe cutting mechanism to cut the pipe.
In this application, after confirming a plurality of unit length of welded tube and the corresponding target pipe cutting radical, send out the instruction after through logical operation by the PLC program, the position of dolly is calculated through the feedback encoder that the scale dolly was taken certainly to the PLC program, compares in real time through the unit length of dolly real-time position and the precutting welded tube of setting for, when the distance that the scale dolly moved equals the unit length of welded tube, carries out speed reduction, stop command. When the sensor arranged on the sizing trolley detects the pipe end, the sensor on the sizing trolley sends a signal to the PLC, the pipe cutting mechanism executes automatic pipe cutting action, the PLC program controls the plasma mechanism corresponding to the pipe cutting mechanism, and the plasma mechanism executes arc starting action to realize automatic pipe cutting.
In the application, a PROFIBUS-DP distributed master-slave control mode is adopted, and Siemens S7-300PLC is used as a master station to mainly finish sensor signal acquisition, data processing and control of an actuating mechanism; the slave station is an Anchuan SGD7S controller and mainly completes remote operation and control of a walking servo motor; the PLC master station and the touch screen adopt a PROFIBUS-DP communication mode to display pipe cutting length setting data, the real-time position of the sizing trolley, pipe cutting length statistical data, an operation state and alarm information. The PLC control system is composed of a CPU module, a digital quantity input/output module and an ET200M substation and mainly completes acquisition and operation of sensor data, motor control and touch screen communication.
In this application, be provided with the guide rail on the length direction along the welded tube, the scale dolly slides and sets up on the guide rail. The sizing trolley is driven to move by a motor on the sizing trolley, an adjusting rod is arranged on the sizing trolley due to different pipe diameters of the prefabricated welded pipes and is vertically arranged, a sensor used for detecting the pipe end of the welded pipe is arranged on the adjusting rod in a sliding mode, and the adjusting rod is used for adjusting the height of the sensor.
As a specific implementation mode of the automatic pipe cutting method for the spiral welded pipe, the total length is calculated according to the following formula:
L2＝L1×cosα
wherein L is2Indicates the total length of the pre-welded tube, L1The length of the steel coil is shown, and alpha represents the forming angle of the prefabricated welded pipe.
In this application, the width and the length of coil of strip are the known value to the shaping angle of the prefabricated welded tube of making is the default. Wherein the molding angle is expressed as:
wherein, B represents the width 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 welded pipe. After the steel coil is welded inside and outside to form a spiral welded pipe, the total length L is2Indicating the length along the axis of the pre-welded tube. The unit lengths are different from each other, and the unit lengths of the matched welded pipes are specifically selected according to the information such as the length of the steel coil before cutting.
As a specific embodiment of the automatic pipe cutting method for a spiral welded pipe provided by the present invention, determining the target pipe cutting number of the welded pipe within the range of the total length according to a plurality of unit lengths includes:
determining the value range of the number of the cut pipes according to the total length and a plurality of unit lengths; and determining the total pipe cutting length corresponding to different pipe cutting numbers in the value range.
And selecting the maximum value smaller than the total length in the total pipe cutting length as the target welded pipe length, wherein the number of welded pipes corresponding to the target welded pipe length is the target pipe cutting number.
In this application, because all can't guarantee to utilize the coil of strip is whole when surely managing at every turn, have the surplus steel material of certain length. In order to reduce the waste of resources, different pipe cutting numbers are determined before the steel coil is processed, and the pipe cutting lengths corresponding to the different pipe cutting numbers are respectively determined, so that the residual length of the welded pipe can be known in advance, and further, steel is saved to the maximum extent. The total length of the welded pipe is determined according to the forming angle and the length of the steel coil, and a plurality of welded pipes with different unit lengths need to be cut out from one steel coil. Taking the length of the welded pipe of one steel coil after calculation as 31 meters as an example, the welded pipe with the unit length of 8 meters and 10 meters needs to be cut. The corresponding cutting root numbers are respectively as follows: 3 8 meters, 28 meters by 10 meters and 1 by 8 meters by 2 meters by 10 meters. By calculating the maximum tube cutting length of the three tube cutting numbers to be 28 meters, the corresponding target tube cutting number is 8 meters and 1 tube and 10 meters and 2 tubes. And (4) welding the remaining 3 m steel coil with the next steel coil when the remaining length of the welded pipe is 3 m.
As a specific implementation mode of the automatic pipe cutting method for the spiral welded pipe, provided by the invention, the expression of the value range is as follows:
wherein n represents the number of cut tubes, L5Denotes the minimum value of a plurality of unit lengths, L6Represents the maximum of a plurality of unit lengths.
In this application, the value range of surely managing the radical through the total length of welded tube determines, because the radical of welded tube that a coil of strip can process and make is less. Consequently, the maximum value of the pipe cutting length corresponding to the unit length of different welded pipes under different pipe cutting numbers is determined through analyzing the number of the welded pipes to be cut one by one, the maximum value of the pipe cutting length under different welded pipe unit lengths is sequentially solved in the value range of the pipe cutting numbers, the pipe cutting numbers which can save steel materials are finally determined, and the waste of resources is reduced.
As a specific implementation mode of the automatic pipe cutting method for the spiral welded pipe, the calculation formula of the head length is as follows:
L4＝L3×sinα
wherein L is4Indicating the length of the butt joint of the welded tube, L3The width of the steel coil is shown, and alpha represents the forming angle of the prefabricated welded 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 welded pipe is produced continuously, the tail of one coil of steel needs to be welded with the head of the next coil of steel after the coil of steel 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 welded pipe as much as possible, so that the reliability of connection between the side edges of the steel coil is ensured, and the butt joint is prevented from cracking. Because the influence of the steel coil on the head length needs to be considered in advance, the head length of the steel coil needs to be subtracted on the basis of the welded pipe assembly when the number of the cut pipes is determined.
As a specific embodiment of the automatic pipe cutting method for the spiral welded pipe provided by the present invention, the determining the number of target pipe cuts within a range of removing the butt length from the total length according to a plurality of unit lengths includes:
determining the value range of the number of the cut pipes on the basis of eliminating the length of the butt joint from the total length; and determining the total pipe cutting length corresponding to different pipe cutting numbers in the value range.
And selecting the maximum value smaller than the total length in the total pipe cutting length as the target welded pipe length, wherein the number of welded pipes corresponding to the target welded pipe length is the target pipe cutting number.
In this application, when the coil of strip that needs to be amputated is to the head, the total length that needs the welded tube subtracts coil of strip length to the head. The spiral welded pipe is continuously produced, and the width of the processed and manufactured steel coils is the same. Use a coil of strip as an example, its head and afterbody all are used for with two other coil of strip welding, in order to guarantee that the coil of strip is in the tip of welded tube to the coil of strip is to the head needs to be amputated after processing for the welded tube, consequently need reject the influence of coil of strip to the head when confirming the welded tube radical. When the steel coil is required to be cut off in opposite directions, the length of the steel coil opposite directions is subtracted from the total length of the welded pipe in advance. For example, when two steel coils are adopted, the two steel coils are connected end to end, so that the two steel coils are regarded as a whole in order to avoid excessive waste of steel materials, the middle part of the two steel coils cannot be cut off, the middle area of a certain welded pipe cannot be prevented from being aligned, and at the moment, although the two steel coils are adopted, the steel coils with one length only need to be removed.
As a specific implementation mode of the automatic pipe cutting method for the spiral welded pipe, provided by the invention, the expression of the value range is as follows:
wherein n represents the number of cut tubes, L5Denotes the minimum value of a plurality of unit lengths, L6Represents the maximum of a plurality of unit lengths.
In the application, one butt length is eliminated on the basis of the total length of the steel coil, and then the butt length of the steel coil is determined within the length range not including the butt length of the steel coilThe number of welded tubes.
The minimum value of the number of the steel coils is determined,
the maximum value of the number of the steel coils is determined. And sequencing the number of the welded pipes according to the size sequence. The number of the welded tubes is
And only two types of welded pipes have a unit length L5And L6Respectively determine the time of the example
Length of (d). And then selecting the tube cutting scheme which is the largest and is less than the total length of the steel coil. And adding 1 to the number of the welded pipes after the determination, solving the next largest pipe cutting scheme which is smaller than the total length of the steel coil, and the like. And finally, selecting the maximum value from the multiple sets of data, namely finally determining the number of the cut tubes corresponding to the unit length of the multiple welded tubes. The method aims to reduce waste and production cost by determining the maximum value of the total welded pipe length determined by different pipe cutting methods.
As a specific embodiment of the method for automatically cutting a spiral welded pipe provided by the present invention, after determining the remaining length of the spiral welded pipe for connecting with the next steel coil, the method includes:
determining the cutting surplus L of the welded pipe according to the total length and the final pipe cutting length7。
From the cutting residual L7And determining the corrected total length according to the total length of the next steel coil, and determining the number of the corrected cut tubes according to the corrected total length.
The corrected total length is:
L8＝L9+L7
wherein L is8Indicates the corrected total length, L9The total length of the next coil is shown.
In this application, when not excising the coil of strip when making a bit, different coils of strip can regard as an interconnect's whole, can directly regard as the partly of next coil of strip cutting a coil of strip remaining steel material, consequently revises according to remaining coil of strip length when confirming the pipe root of cutting of next coil of strip.
As a specific implementation manner of the automatic pipe cutting method for the spiral welded pipe provided by the invention, the expression for correcting the value range of the number of the cut pipes comprises the following steps:
when the steel coil does not need to be cut off in opposite directions,
when the steel coil needs to be cut off in opposite directions,
wherein n is1The number of the cut tubes is indicated.
In this application, L8And the correction assembly is shown, so when the opposite ends of the steel coils do not need to be cut off, the number of the cut pipes is corrected, the influence of the residual length of the steel coils on the manufacture of the welded pipe of the next steel coil is considered, and the two steel coils are regarded as a whole.
When the steel coils need to be cut off in opposite directions, the length of the residual welded pipe of the previous steel coil can be used as a part of the next steel coil, and the connection between the two steel coils can not be eliminated in opposite directions when a plurality of steel coils are continuously produced, so that the opposite length of one steel coil only needs to be eliminated.
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 (4)
1. The automatic pipe cutting method for the spiral welded pipe is characterized by comprising the following steps:
determining the total length of the prefabricated welded pipe according to the length of the steel coil and a preset forming angle; selecting a plurality of unit lengths of the prefabricated welded pipe;
when the steel coils do not need to be cut in opposite directions, determining the number of target pipe cutting in the total length range according to the unit lengths;
when the steel coil is required to be cut off in an opposite manner, determining the opposite length according to the width of the steel coil and the forming angle, and determining the number of target pipe cutting in the range of removing the opposite length in the total length according to a plurality of unit lengths;
processing and manufacturing the steel coil into a spiral welded pipe, sequentially cutting the spiral welded pipe according to unit length corresponding to the target pipe cutting number, and determining the residual length of the spiral welded pipe for connecting with the next steel coil;
the total length is calculated by the formula:
L2＝L1×cosα
wherein L is2Indicating said total length of the pre-welded tube, L1Representing the length of the steel coil, and alpha representing the forming angle of the prefabricated welded pipe;
the calculation formula of the length of the butt joint is as follows:
L4＝L3×sinα
wherein L is4Indicates the length of the butt, L3Representing the width of the steel coil;
the determining the number of target pipe cutting roots in the range of the total length excluding the butt length according to the unit lengths comprises the following steps:
determining a first value range of the number of cut pipes on the basis of eliminating the length of the butt joint from the total length; determining the total pipe cutting length corresponding to different pipe cutting numbers in the first value range;
selecting the maximum value of the total pipe cutting lengths, which is smaller than the total length, as a target welded pipe length, wherein the number of welded pipes corresponding to the target welded pipe length is the target pipe cutting number;
the expression of the first value range is as follows:
wherein n represents the number of cut tubes, L5Represents the minimum of a plurality of said unit lengths, L6Represents the maximum of a plurality of said unit lengths.
2. The automatic pipe cutting method for the spiral welded pipe as claimed in claim 1, wherein the sequentially cutting the spiral welded pipe according to the unit length corresponding to the target pipe cutting number comprises:
measuring the length of the spiral welded pipe by using a sizing trolley;
and when the length of the spiral welded pipe is the same as the corresponding unit length, controlling the pipe cutting mechanism to cut the pipe.
3. The method of claim 2, wherein said determining a target number of pipe cuts over said total length from a plurality of said unit lengths comprises:
determining a second value range of the number of the cut pipes according to the total length and a plurality of unit lengths; determining the total pipe cutting length corresponding to different pipe cutting numbers in the second value range;
and selecting the maximum value smaller than the total length in the total pipe cutting length as the target welded pipe length, wherein the number of welded pipes corresponding to the target welded pipe length is the target pipe cutting number.
4. The automatic pipe cutting method for the spiral welded pipe according to claim 3, wherein the expression of the second value range is as follows:
wherein n represents the number of cut tubes, L5Representing a plurality of said unit lengthsMinimum value, L6Represents the maximum of a plurality of said unit lengths.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010316568.XA CN111468806B (en) | 2020-04-21 | 2020-04-21 | Automatic pipe cutting method for spiral welded pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010316568.XA CN111468806B (en) | 2020-04-21 | 2020-04-21 | Automatic pipe cutting method for spiral welded pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111468806A CN111468806A (en) | 2020-07-31 |
| CN111468806B true CN111468806B (en) | 2022-04-08 |
Family
ID=71755485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010316568.XA Active CN111468806B (en) | 2020-04-21 | 2020-04-21 | Automatic pipe cutting method for spiral welded pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111468806B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113103069A (en) * | 2021-05-15 | 2021-07-13 | 铜陵学院 | Efficient and accurate round steel automatic sizing system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002036025A (en) * | 2000-07-26 | 2002-02-05 | Mitsubishi Heavy Ind Ltd | Material cutting method of pipe material |
| CN101739606A (en) * | 2008-11-19 | 2010-06-16 | 北京理工大学 | Raw material-saving one-dimensional stock-cutting method |
| CN102322151A (en) * | 2011-05-26 | 2012-01-18 | 中国建筑标准设计研究院 | Intelligent steel bar screening and blanking optimization method |
| CN103164752A (en) * | 2013-04-03 | 2013-06-19 | 中国计量学院 | Heuristic one-dimensional blanking method based on stratified random search algorithm |
| CN107537865A (en) * | 2017-09-11 | 2018-01-05 | 湖南视拓信息技术股份有限公司 | The optimal control method and device of tube length |
| CN110516834A (en) * | 2019-07-04 | 2019-11-29 | 华电重工股份有限公司 | A kind of optimization method of Tube Sizing |
| CN110852488A (en) * | 2019-10-21 | 2020-02-28 | 新疆八钢金属制品有限公司 | Method for improving yield of spiral welded pipe by sequencing feeding |
-
2020
- 2020-04-21 CN CN202010316568.XA patent/CN111468806B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002036025A (en) * | 2000-07-26 | 2002-02-05 | Mitsubishi Heavy Ind Ltd | Material cutting method of pipe material |
| CN101739606A (en) * | 2008-11-19 | 2010-06-16 | 北京理工大学 | Raw material-saving one-dimensional stock-cutting method |
| CN102322151A (en) * | 2011-05-26 | 2012-01-18 | 中国建筑标准设计研究院 | Intelligent steel bar screening and blanking optimization method |
| CN103164752A (en) * | 2013-04-03 | 2013-06-19 | 中国计量学院 | Heuristic one-dimensional blanking method based on stratified random search algorithm |
| CN107537865A (en) * | 2017-09-11 | 2018-01-05 | 湖南视拓信息技术股份有限公司 | The optimal control method and device of tube length |
| CN110516834A (en) * | 2019-07-04 | 2019-11-29 | 华电重工股份有限公司 | A kind of optimization method of Tube Sizing |
| CN110852488A (en) * | 2019-10-21 | 2020-02-28 | 新疆八钢金属制品有限公司 | Method for improving yield of spiral welded pipe by sequencing feeding |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111468806A (en) | 2020-07-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2021129671A1 (en) | Weld bead modeling method, device and system for wire-arc additive manufacture | |
| CN111468806B (en) | Automatic pipe cutting method for spiral welded pipe | |
| CN101957611B (en) | Spline real-time interpolation method | |
| CN110695491B (en) | Elbow posture-changing surfacing printing method | |
| CN201760574U (en) | Continuous casting fixed-length detection cutter | |
| JP2011177791A (en) | Method and apparatus for producing helical spring by spring winding | |
| CN103272901B (en) | A kind of conduit full pattern gets method processed | |
| CN105798439B (en) | Single supply multifibres welding machine and its not blow-out welding wire checker control method | |
| CN205341763U (en) | Spring former | |
| CN113031551B (en) | Intelligent arrangement method and system for automatic production line of workshop | |
| CN103241938B (en) | A kind of manufacture method of preform and producing apparatus thereof | |
| CN109918807A (en) | A kind of local knife rail method for fairing optimizing curvature | |
| US7451631B2 (en) | Spiral pipe machine | |
| CN114273748A (en) | Billet fixed-length cutting redundancy system for small square billets | |
| CN203695627U (en) | Conveying system for inputting bars to cooling bed | |
| CN111487929A (en) | Multi-constraint numerical control machining feed rate customizing method based on bidirectional proportional adjustment | |
| CN111360835A (en) | Automatic welding control method for welding mechanical arm | |
| CN116291519A (en) | Axis control method for unmanned autonomous tunneling of shield tunneling machine | |
| CN109175523B (en) | Manufacturing method of conical seamless steel tube | |
| CN110688793B (en) | Secondary shape correction quality checking method during assembly of aviation elbow based on finite element | |
| CN105528331B (en) | The method that blanking bend tube size is determined based on excel systems | |
| CN215189389U (en) | Automatic tipping paper deviation correcting device of cigarette making machine | |
| CN115195157A (en) | Automatic wire laying motion path optimization method for corner structure | |
| CN205869171U (en) | Pipe bending mechanism | |
| CN110908410A (en) | Optical fiber drawing UV curing oxygen content automatic regulating system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |