CN107855687B - A kind of increasing material manufacturing fusion penetration on-line checking and control method and system - Google Patents
A kind of increasing material manufacturing fusion penetration on-line checking and control method and system Download PDFInfo
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- CN107855687B CN107855687B CN201710966381.2A CN201710966381A CN107855687B CN 107855687 B CN107855687 B CN 107855687B CN 201710966381 A CN201710966381 A CN 201710966381A CN 107855687 B CN107855687 B CN 107855687B
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- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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- 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
- B23K9/00—Arc welding or cutting
- B23K9/095—Monitoring or automatic control of welding parameters
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- 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
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
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- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a kind of increasing material manufacturing fusion penetration on-line checkings and control method and system, wherein is welded according to technological parameter to a position to be welded；The infrared image for acquiring molten bath carries out image procossing to crater image, obtains the molten wide at molten bath position and the maximum temperature difference in fusion penetration direction；Theorize fusion penetration computation model, by calculating parameter input hypothesis fusion penetration computation model, obtains theoretical fusion penetration；The maximum temperature difference of theoretical fusion penetration, molten wide and fusion penetration direction is inputted into trained artificial neural network, artificial neural network exports practical fusion penetration；The difference for calculating practical fusion penetration and preset need fusion penetration, when difference is more than preset range, according to difference adjusting process parameter, then to the welding of next position to be welded.On-line real-time measuremen welding penetration is realized, on line real time control welding penetration realizes intelligent increasing material manufacturing, high degree of automation.
Description
Technical field
The present invention relates to welding penetrations to detect and control field, more particularly, to a kind of increasing material manufacturing fusion penetration on-line checking and
Control method and system.
Background technique
The it is proposed of increasing material manufacturing concept starts from the late 1980s, and China then begins one's study the beginning of the nineties.By
The time in short more than 20 year, this technology have achieved rapid development, in aerospace, minute manufacturing, biomedical engineering etc.
The application prospect of numerous areas is very wide.Amount of penetration in electric arc increasing material manufacturing is an important ginseng for being related to welding quality
Number.On line real time control fusion penetration is studied, it is significant for increasing material manufacturing automation, intelligent development.
The method and a kind of ultrasound of a kind of ultrasonic phase array measurement U rib weld penetration survey penetrating detection system and disclose utilization
The method of ultrasound examination weld penetration, but ultrasound examination needs device to contact with workpiece, influences product size precision；Together
When, mobile with position while welding, device is also required to move, it is difficult to realize that process is synchronous, intelligent manufacturing is difficult.A kind of weld penetration
Detection method discloses the method using magnetic induction signal intensity detection fusion penetration, and the method is difficult to high temperature weld seam detection.
Currently, occurring the method for a kind of energy fine on-line real-time measuremen and on line real time control weld penetration not yet.
Summary of the invention
It is an object of the invention to overcome above-mentioned technical deficiency, a kind of increasing material manufacturing fusion penetration on-line checking and controlling party are proposed
Method and system solve above-mentioned technical problem in the prior art.
To reach above-mentioned technical purpose, technical solution of the present invention provides a kind of increasing material manufacturing fusion penetration on-line checking and control
Method, comprising:
S1, one position to be welded is welded according to technological parameter；
S2, acquisition crater image, crater image are the infrared image at the molten bath position of welding, carry out image to crater image
Processing, obtains topographical information, temperature distribution information, the pixel value of crater image；Establish temperature value and pixel value first is corresponding
Relationship establishes the second corresponding relationship of distance value and pixel value；Molten bath is obtained according to the first corresponding relationship and the second corresponding relationship
The molten wide at position and the maximum temperature difference in fusion penetration direction；
S3, theorize fusion penetration computation model, by calculating parameter input hypothesis fusion penetration computation model, obtains theoretical fusion penetration；
S4, the maximum temperature difference of theoretical fusion penetration, molten wide and fusion penetration direction is inputted to trained artificial neural network, artificial mind
Practical fusion penetration is exported through network；
S5, the difference for calculating practical fusion penetration and preset need fusion penetration, when difference is in preset range, to next to be welded
Position executes step S1-S5；When difference is more than preset range, according to difference adjusting process parameter, then to next socket part to be welded
Position executes step S1-S5.
The present invention also provides a kind of increasing material manufacturing fusion penetration on-line checking and control systems, comprising:
Welding module: one position to be welded is welded according to technological parameter；
Image obtains and processing module: acquisition crater image, crater image is the infrared image at the molten bath position of welding, right
Crater image carries out image procossing, obtains topographical information, temperature distribution information, the pixel value of crater image；Establish temperature value and
First corresponding relationship of pixel value establishes the second corresponding relationship of distance value and pixel value；According to the first corresponding relationship and second
Corresponding relationship obtains the molten wide at molten bath position and the maximum temperature difference in fusion penetration direction；
Theoretical fusion penetration computing module: theorize fusion penetration computation model, by calculating parameter input hypothesis fusion penetration computation model,
Obtain theoretical fusion penetration；
Practical fusion penetration computing module: the maximum temperature difference input of theoretical fusion penetration, molten wide and fusion penetration direction is trained artificial
Neural network, artificial neural network export practical fusion penetration；
Technical arrangement plan module: the difference of practical fusion penetration and preset need fusion penetration is calculated, when difference is in preset range
It is interior, welding module is successively executed to next position to be welded, image obtains and processing module, theoretical fusion penetration computing module, reality
The operation of fusion penetration computing module, technical arrangement plan module；When difference is more than preset range, according to difference adjusting process parameter,
Then welding module is successively executed to next position to be welded, image obtains and processing module, theoretical fusion penetration computing module, reality
The operation of fusion penetration computing module, technical arrangement plan module.
Compared with prior art, it the beneficial effect comprise that acquiring crater image and handling image, establishes
Theoretical fusion penetration computation model, obtains theoretical fusion penetration, obtains practical fusion penetration using artificial neural network, accomplishes that on-line real-time measuremen welds
Connect fusion penetration；When the difference for welding practical fusion penetration and preset need fusion penetration is more than preset range, adjusting process parameter, then to subsequent
Position to be welded is welded, and on line real time control welding penetration is realized, and realizes intelligent increasing material manufacturing.
Detailed description of the invention
Fig. 1 is a kind of increasing material manufacturing fusion penetration on-line checking provided by the invention and control method flow chart；
Fig. 2 is a kind of increasing material manufacturing fusion penetration on-line checking and Control system architecture block diagram provided by the invention.
In attached drawing: 1, increasing material manufacturing fusion penetration on-line checking and control system, 11, welding module, 12, image acquisition and processing
Module, 13, theoretical fusion penetration computing module, 14, practical fusion penetration computing module, 15, technical arrangement plan module.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
The present invention provides a kind of increasing material manufacturing fusion penetration on-line checking and control methods, comprising:
S1, one position to be welded is welded according to technological parameter；
S2, acquisition crater image, crater image are the infrared image at the molten bath position of welding, carry out image to crater image
Processing, obtains topographical information, temperature distribution information, the pixel value of crater image；Establish temperature value and pixel value first is corresponding
Relationship establishes the second corresponding relationship of distance value and pixel value；Molten bath is obtained according to the first corresponding relationship and the second corresponding relationship
The molten wide at position and the maximum temperature difference in fusion penetration direction；
S3, theorize fusion penetration computation model, by calculating parameter input hypothesis fusion penetration computation model, obtains theoretical fusion penetration；
S4, the maximum temperature difference of theoretical fusion penetration, molten wide and fusion penetration direction is inputted to trained artificial neural network, artificial mind
Practical fusion penetration is exported through network；
S5, the difference for calculating practical fusion penetration and preset need fusion penetration, when difference is in preset range, to next to be welded
Position executes step S1-S5；When difference is more than preset range, according to difference adjusting process parameter, then to next socket part to be welded
Position executes step S1-S5.
Increasing material manufacturing fusion penetration on-line checking of the present invention and control method, in step S1:
The technological parameter is the preset several physical quantitys for influencing welding quality；
Specifically, technological parameter includes welding condition and auxiliary welding condition, welding condition includes weldering
The combination of process parameters of the had an impact welding quality such as electric current, weldingvoltage, speed of welding is connect, auxiliary welding condition includes
The combination of process parameters of the had an impact welding qualities such as joint environment temperature, welding water cooling amount, the flow of process gas and pressure.
Increasing material manufacturing fusion penetration on-line checking of the present invention and control method, in step S2:
Using the picture signal at infrared image acquisition device acquisition molten bath position, digital signal is converted by picture signal
Afterwards, then image procossing is carried out, obtains topographical information, temperature distribution information, the pixel value of crater image.
Increasing material manufacturing fusion penetration on-line checking of the present invention and control method, in step S3:
Joint welding heat source mathematical model and welding heat transfer mathematical model are to establish the theoretical fusion penetration computation model；
Specifically, theoretical fusion penetration computation model includes that all can utilize welding heat source mathematical model and welding heat transfer model will
The combination that fusion penetration is solved by way of calculating；Preferably, Gauss heat source welding mathematical model and semi-infinite body wink can be combined
When heat point source welding heat transfer mathematical model to theorize fusion penetration computation model；The theory that theoretical fusion penetration computation model solves
The error of fusion penetration and practical fusion penetration should be within the scope of reasonable.
Increasing material manufacturing fusion penetration on-line checking of the present invention and control method, in step S3:
The calculating parameter includes wlding, the detail parameters of welding equipment and predetermined physical parameter.
Increasing material manufacturing fusion penetration on-line checking of the present invention and control method, in step S4:
Artificial neural network can be BP (back propagation) artificial neuron primitive network, or optimization changes
Into all BP artificial neural networks that can be solved to fusion penetration later.
Increasing material manufacturing fusion penetration on-line checking of the present invention and control method, in step S5:
When a position to be welded practical fusion penetration and preset need fusion penetration difference be more than preset range, generated according to difference
Data are adjusted, can continue to weld the position to be welded according to adjustment data, so that the practical fusion penetration of the position to be welded
Within a preset range with the difference of preset need fusion penetration.
The present invention also provides a kind of increasing material manufacturing fusion penetration on-line checking and control systems 1, comprising:
Welding module 11: one position to be welded is welded according to technological parameter；
Image obtains and processing module 12: acquisition crater image, and crater image is the infrared image at the molten bath position of welding,
Image procossing is carried out to crater image, obtains topographical information, temperature distribution information, the pixel value of crater image；Establish temperature value
With the first corresponding relationship of pixel value, the second corresponding relationship of distance value and pixel value is established；According to the first corresponding relationship and
Two corresponding relationships obtain the molten wide at molten bath position and the maximum temperature difference in fusion penetration direction；
Theoretical fusion penetration computing module 13: theorize fusion penetration computation model, and calculating parameter input hypothesis fusion penetration is calculated mould
Type obtains theoretical fusion penetration；
Practical fusion penetration computing module 14: the maximum temperature difference of theoretical fusion penetration, molten wide and fusion penetration direction is inputted into trained people
Artificial neural networks, artificial neural network export practical fusion penetration；
Technical arrangement plan module 15: calculating the difference of practical fusion penetration and preset need fusion penetration, when difference is in default model
In enclosing, welding module is successively executed to next position to be welded, image obtains and processing module, theoretical fusion penetration computing module, reality
The operation of border fusion penetration computing module, technical arrangement plan module；When difference is more than preset range, according to difference adjusting process ginseng
Number, welding module is successively then executed to next position to be welded, image obtain with processing module, theoretical fusion penetration computing module,
The operation of practical fusion penetration computing module, technical arrangement plan module.
Increasing material manufacturing fusion penetration on-line checking of the present invention and control system 1, in welding module 11:
The technological parameter is the preset several physical quantitys for influencing welding quality；
Specifically, technological parameter includes welding condition and auxiliary welding condition, welding condition includes weldering
The combination of process parameters of the had an impact welding quality such as electric current, weldingvoltage, speed of welding is connect, auxiliary welding condition includes
The combination of process parameters of the had an impact welding qualities such as joint environment temperature, welding water cooling amount, the flow of process gas and pressure.
Increasing material manufacturing fusion penetration on-line checking of the present invention and control system 1, in theoretical fusion penetration computing module 13:
Joint welding heat source mathematical model and welding heat transfer mathematical model are to establish the theoretical fusion penetration computation model；
Specifically, theoretical fusion penetration computation model includes that all can utilize welding heat source mathematical model and welding heat transfer model will
The combination that fusion penetration is solved by way of calculating；Preferably, Gauss heat source welding mathematical model and semi-infinite body wink can be combined
When heat point source welding heat transfer mathematical model to theorize fusion penetration computation model；The theory that theoretical fusion penetration computation model solves
The error of fusion penetration and practical fusion penetration should be within the scope of reasonable.
Increasing material manufacturing fusion penetration on-line checking of the present invention and control system 1, in theoretical fusion penetration computing module 13:
The calculating parameter includes wlding, the detail parameters of welding equipment and predetermined physical parameter.
Increasing material manufacturing fusion penetration on-line checking of the present invention and control system 1, in practical fusion penetration computing module 14:
Artificial neural network can be BP (back propagation) artificial neuron primitive network, or optimization changes
Into all BP artificial neural networks that can be solved to fusion penetration later.
Compared with prior art, it the beneficial effect comprise that acquiring crater image and handling image, establishes
Theoretical fusion penetration computation model, obtains theoretical fusion penetration, obtains practical fusion penetration using artificial neural network, accomplishes that on-line real-time measuremen welds
Connect fusion penetration；When the difference for welding practical fusion penetration and preset need fusion penetration is more than preset range, adjusting process parameter, then to subsequent
Position to be welded is welded, and on line real time control welding penetration is realized, and realizes intelligent increasing material manufacturing.
The above described specific embodiments of the present invention are not intended to limit the scope of the present invention..Any basis
Any other various changes and modifications that technical concept of the invention is made should be included in the guarantor of the claims in the present invention
It protects in range.
Claims (10)
1. a kind of increasing material manufacturing fusion penetration on-line checking and control method characterized by comprising
S1, one position to be welded is welded according to technological parameter；
S2, acquisition crater image, the crater image are the infrared image at the molten bath position of welding, are carried out to the crater image
Image procossing obtains topographical information, temperature distribution information, the pixel value of the crater image；Establish temperature value and pixel value
First corresponding relationship establishes the second corresponding relationship of distance value and pixel value；According to first corresponding relationship and described second
Corresponding relationship obtains the molten wide at molten bath position and the maximum temperature difference in fusion penetration direction；
S3, theorize fusion penetration computation model, and calculating parameter is inputted the theoretical fusion penetration computation model, obtains theoretical fusion penetration；
S4, the theoretical fusion penetration, molten wide and the maximum temperature difference in fusion penetration direction are inputted into trained artificial neural network, artificial mind
Practical fusion penetration is exported through network；
S5, the difference for calculating the practical fusion penetration and preset need fusion penetration, when difference is in preset range, to next to be welded
Position executes step S1-S5；When difference is more than preset range, according to difference adjusting process parameter, then to next socket part to be welded
Position executes step S1-S5.
2. increasing material manufacturing fusion penetration on-line checking as described in claim 1 and control method, which is characterized in that in step S1:
The technological parameter is the preset several physical quantitys for influencing welding quality, wherein, several physical quantitys include welding
Electric current, weldingvoltage and speed of welding.
3. increasing material manufacturing fusion penetration on-line checking as described in claim 1 and control method, which is characterized in that in step S3:
Joint welding heat source mathematical model and welding heat transfer mathematical model are to establish the theoretical fusion penetration computation model.
4. increasing material manufacturing fusion penetration on-line checking as described in claim 1 and control method, which is characterized in that in step S3:
The calculating parameter includes wlding, the detail parameters of welding equipment and predetermined physical parameter.
5. increasing material manufacturing fusion penetration on-line checking as described in claim 1 and control method, which is characterized in that in step S4:
The artificial neural network uses BP (back propagation) artificial neural network.
6. a kind of increasing material manufacturing fusion penetration on-line checking and control system characterized by comprising
Welding module: one position to be welded is welded according to technological parameter；
Image obtains and processing module: acquisition crater image, the crater image is the infrared image at the molten bath position of welding, right
The crater image carries out image procossing, obtains topographical information, temperature distribution information, the pixel value of the crater image；It establishes
First corresponding relationship of temperature value and pixel value establishes the second corresponding relationship of distance value and pixel value；According to described first pair
It should be related to the maximum temperature difference of molten wide and fusion penetration direction that molten bath position is obtained with second corresponding relationship；
Theoretical fusion penetration computing module: theorize fusion penetration computation model, and calculating parameter is inputted the theoretical fusion penetration computation model,
Obtain theoretical fusion penetration；
Practical fusion penetration computing module: the theoretical fusion penetration, molten wide and the maximum temperature difference input in fusion penetration direction is trained artificial
Neural network, artificial neural network export practical fusion penetration；
Technical arrangement plan module: the difference of the practical fusion penetration and preset need fusion penetration is calculated, when difference is in preset range
It is interior, welding module is successively executed to next position to be welded, image obtains and processing module, theoretical fusion penetration computing module, reality
The operation of fusion penetration computing module, technical arrangement plan module；When difference is more than preset range, according to difference adjusting process parameter,
Then welding module is successively executed to next position to be welded, image obtains and processing module, theoretical fusion penetration computing module, reality
The operation of fusion penetration computing module, technical arrangement plan module.
7. increasing material manufacturing fusion penetration on-line checking as claimed in claim 6 and control system, which is characterized in that in welding module:
The technological parameter is the preset several physical quantitys for influencing welding quality, wherein, several physical quantitys include welding
Electric current, weldingvoltage and speed of welding.
8. increasing material manufacturing fusion penetration on-line checking as claimed in claim 6 and control system, which is characterized in that theoretical fusion penetration calculates
In module:
Joint welding heat source mathematical model and welding heat transfer mathematical model are to establish the theoretical fusion penetration computation model.
9. increasing material manufacturing fusion penetration on-line checking as claimed in claim 6 and control system, which is characterized in that theoretical fusion penetration calculates
In module:
The calculating parameter includes wlding, the detail parameters of welding equipment and predetermined physical parameter.
10. increasing material manufacturing fusion penetration on-line checking as claimed in claim 6 and control system, which is characterized in that practical fusion penetration meter
It calculates in module:
The artificial neural network uses BP (back propagation) artificial neural network.
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| CN110490866B (en) * | 2019-08-22 | 2020-05-15 | 四川大学 | Metal additive forming size real-time prediction method based on depth feature fusion |
| CN110472698B (en) * | 2019-08-22 | 2020-05-29 | 四川大学 | Metal additive forming penetration real-time prediction method based on depth and transfer learning |
| US11651587B2 (en) | 2019-12-27 | 2023-05-16 | Siemens Aktiengesellschaft | Method and apparatus for product quality inspection |
| CN112719528B (en) * | 2020-12-23 | 2022-11-11 | 深圳市兴科瑞拓科技有限公司 | Intelligent welding method and device based on gas shielded welding machine |
| CN112916987B (en) * | 2021-02-02 | 2022-02-15 | 北京理工大学 | Arc additive manufacturing online monitoring and real-time control method and system |
| CN113369697B (en) * | 2021-06-22 | 2023-06-09 | 深圳信息职业技术学院 | Laser polishing online detection system and method |
| CN114799594A (en) * | 2022-04-01 | 2022-07-29 | 中国第一汽车股份有限公司 | Welding quality control method for square module bus |
| CN115781077B (en) * | 2022-12-28 | 2023-07-25 | 日照鸿本机械制造有限公司 | Deformation-preventing control method and system for long-axis multi-point welding |
| CN116586761B (en) * | 2023-05-11 | 2023-11-03 | 广州卫亚汽车零部件有限公司 | Method and system for on-line monitoring and controlling laser welding penetration |
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| US6084205A (en) * | 1997-03-14 | 2000-07-04 | Sandia Corporation | Method for enhanced control of welding processes |
| JP4597040B2 (en) * | 2005-11-17 | 2010-12-15 | Ｄｘアンテナ株式会社 | Intrusion detection method and intrusion detection system |
| CN100457353C (en) * | 2006-04-25 | 2009-02-04 | 南京理工大学 | Weld seam appearance, fused bath and seam near-infrared vision integral sensing checkout gear |
| JP2009125790A (en) * | 2007-11-27 | 2009-06-11 | Kobe Steel Ltd | Monitoring apparatus of arc welding |
| CN102323756B (en) * | 2011-08-16 | 2013-08-21 | 上海交通大学 | Laser cladding-based dilution rate uniformity control method and device thereof |
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