CN114700588B - Weld joint identification method for electric field to control arc rotation - Google Patents
Weld joint identification method for electric field to control arc rotation Download PDFInfo
- Publication number
- CN114700588B CN114700588B CN202210205605.9A CN202210205605A CN114700588B CN 114700588 B CN114700588 B CN 114700588B CN 202210205605 A CN202210205605 A CN 202210205605A CN 114700588 B CN114700588 B CN 114700588B
- Authority
- CN
- China
- Prior art keywords
- electric field
- welding
- electric
- polar plates
- arc
- 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
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
- B23K9/00—Arc welding or cutting
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
- B23K9/127—Means for tracking lines during arc welding or cutting
- B23K9/1272—Geometry oriented, e.g. beam optical trading
- B23K9/1276—Using non-contact, electric or magnetic means, e.g. inductive means
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Geometry (AREA)
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a welding seam tracking sensor for controlling arc rotation by adopting an electric field, which mainly comprises a welding power supply, a welding seam tracking real-time adjusting mechanism, a Hall sensor, an electric field excitation power supply, 4 electric field polar plates for generating a rotating electric field, a supporting sleeve, a rotating mechanism and the like. After the arc of the welding gun is started, the electric field excitation power supply transmits the same voltage to 2 pairs of electric field polar plates, so that the polarities of 4 electric field polar plates are kept consistent, and symmetrical electric fields are generated along the centers of the polar plates; when the rotating mechanism drives the roller to move along the outer wall of the supporting sleeve, and the distribution condition of an electric field can be changed by touching the spring device on the outer wall, so that an electric arc scans a welding line under the action of the electric field, arc information is extracted through the Hall sensor, and the welding line tracking deviation is judged through the processing of the welding line tracking real-time adjusting mechanism, so that a welding path is adjusted and welding parameters are adjusted, and automatic tracking of the welding line is realized.
Description
Technical Field
The invention relates to a welding seam tracking sensor which utilizes a variable electric field to act on an electric arc of TIG welding to achieve the aim of tracking a welding seam, in particular to a welding seam tracking sensor which utilizes the electric field to control the deflection of the electric arc.
Technical Field
TIG welding is a widely used welding method in industrial production, and is mainly used for controlling TIG arc to realize automatic tracking of welding seams in the field of automatic welding control aiming at the continuous improvement of welding automation degree in recent years. The welding seam tracking is to extract information of welding arc in real time during welding so as to judge the relative position of a welding gun and a welding seam, further adjust a welding path and welding parameters, ensure the reliability of welding quality and realize the welding seam tracking.
The electromagnetic action welding technology is a new welding technology which is gradually perfected in recent years, along with the continuous and deep research, the research range is increasingly expanded, the electromagnetic welding technology is rapidly developed, related theories are gradually formed, and meanwhile, the existing part of technologies are applied to production practice. Because the arc columns of the arc of the TIG welding are in a gas state containing a large amount of charged particles such as electrons and positive ions and neutral particles and the like which are polymerized together, the charged particles between the arc columns are subjected to the action of an electric field to perform related movement under the action of the electric field so as to change the morphology and change the position of the arc.
Chinese patent 201911167050.8 discloses a welding working device with a dust removing function, which comprises a workbench surface, an electrostatic dust collector and a smoke blocking exhaust hood, wherein an electrostatic dust removing component is arranged on the workbench surface, the smoke blocking exhaust hood is arranged on the electrostatic dust removing component in a sealing way, the electrostatic dust removing components are arranged in two groups and are symmetrically arranged, the interval between the two electrostatic dust removing components is connected with an exhaust port, and the two sides of the interval are sealed by baffle plates; the electrostatic dust collection assembly comprises a shutter, an electric purifier and a support plate with holes; the electric purifier comprises a discharge electrode and a dust collecting electrode, wherein the discharge electrode has good conductivity and discharge effect, and discharges the dust collecting electrode under the action of certain voltage; the shutter is a smoke dust and waste gas inlet surface of the device; the two groups of electrostatic dust collection components are provided with independent control devices; the gas purified by the electrostatic dust collection assembly enters an exhaust port, and the exhaust port discharges the smoke by means of electric field wind generated by the electrostatic dust collection assembly.
Chinese patent 201710281545.8 discloses a weld joint tracking sensor of electric and magnetic field double-control electric arcs, wherein an electric field excitation power supply of the sensor transmits voltage with a certain alternating frequency and phase difference to 3 pairs of electric field polar plates, so that the polarities of the 3 pairs of electric field polar plates are alternately changed, and a magnetic field excitation power supply enables a magnetic induction coil to generate a constant longitudinal magnetic field. Under the condition of magnetic field focusing arc form, the electric field is beneficial to controlling arc to rotate and swing, so as to scan a welding line, arc information is extracted through a Hall sensor, then the welding line tracking deviation is judged through the processing of a welding line tracking real-time adjusting mechanism, and then a welding path is adjusted and welding parameters are adjusted, so that automatic tracking of the welding line is realized, but the generation of the magnetic field can generate a corresponding electric field, and the control of the electrode plate to the arc is disturbed.
In summary, few examples of electric fields are used in the field of welding automation, and there is no sensor for precisely controlling arc deflection by an electric field.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a weld joint tracking sensor for controlling the swing of a TIG arc by using an electric field.
The invention aims at realizing the following technical scheme: the sensor mainly comprises a welding power supply, a weld joint tracking real-time adjusting mechanism, a Hall sensor, an electric field excitation power supply, 4 electric field polar plates for generating an electric field, a supporting sleeve, a rotating mechanism and the like, wherein the electric field excitation power supply outputs voltages with the same size and the same polarity to the 4 polar plates, and the 4 polar plates are symmetrically distributed at the same distance from the tungsten electrode, so that the intensity of a magnetic field at the center of the tungsten electrode is 0; when the rotating mechanism moves circularly to drive the roller to move, the roller rotates along the outer wall of the supporting sleeve to roll a spring device on the outer wall of the supporting sleeve to change the position of the polar plate, at the moment, the balance of symmetrical electric fields around the electric arc is broken, resultant force of the electric fields deflects the electric arc, in each period, the electric arc deflects in different directions under the action of the resultant force of the electric fields in different directions, the welding seam is scanned, the Hall sensor receives the change of arc parameters during welding to obtain corresponding data, the data are input into the data analysis system to be analyzed to obtain corresponding welding parameters, the parameters are fed back to the adjusting mechanism, and the adjusting mechanism adjusts a welding path and the welding parameters according to the obtained data to realize automatic tracking of the welding seam.
The rotating mechanism comprises a motor, a connecting rod and a roller, when the motor rotates, the motor drives the connecting rod and the roller to rotate together, the roller rolls circumferentially along the outer wall of the supporting sleeve, when the roller rolls to a spring contact point, the spring contact point drives the electrode plate to move inwards, and when the roller moves away from the contact point, the spring drives the electrode plate to restore to the original position, and the optical code disc records the position of the roller.
The supporting sleeve wall is provided with four through holes which are periodically arranged, each through hole is provided with a spring device, a connecting rod provided with an electrode plate and one end of the spring device are arranged on the inner side of the supporting sleeve, and a contact of the spring device is arranged on the outer wall of the supporting sleeve.
The electric field generating device of the invention inputs the electric fields with the same size and the same polarity to 4 electrode plates arranged on the connecting rod by means of an electric field excitation power supply to generate transverse electric fields.
The electric field excitation power supply is a direct current power supply, and the output voltage can be adjusted according to the condition of a welding line so as to change the electric field and further change the swing angle of an electric arc.
The working principle and the function of the invention are as follows:
when the tungsten electrode is perpendicular to the workpiece in the arc starting process of FIG. 3, each electrode plate inputs voltages with the same magnitude and the same polarity at the same time, and the distances between each electrode plate and the tungsten electrode are the same and are symmetrically distributed, so that the resultant force of the electric field at the center of the tungsten electrode is 0, and the arc does not deviate.
Fig. 4 shows that when the distance between the electrode plates starts to change, the electric field at the tungsten electrode changes, the electric arc shifts to one side under the action of the electric field force, and fig. 5 shows that the distance between the other electrode plates changes, so that the direction of the electric field changes, and the direction of the electric arc shift changes under the action of the electric field force.
The invention has the following beneficial effects: the tungsten electrode does not move, the electric arc cannot diverge due to inertia, and the effect of electric arc offset is achieved, so that the information of the electric arc is effectively extracted to perform electric arc tracking, meanwhile, the electric arc blowing force can act on the surface of a molten pool due to the fact that the electric arc rotates and offsets, so that metal liquid can be uniformly spread on the surface of a workpiece, and the probability of undercut and weld flash occurrence is reduced.
Drawings
FIG. 1 is a schematic view of the structure of the present invention
FIG. 2 is a schematic view of the spring device and the rotary device of the present invention
FIGS. 3, 4 and 5 are diagrams of weld positions of a sensor and a corresponding welded workpiece during operation of the present invention
FIG. 6 is a schematic diagram showing the resultant force distribution of the electric field according to the present invention
In the figure, 1-motor, 2-connecting rod, 3-roller, 4-spring, 5-electrode plate, 6-tungsten electrode, 7-supporting sleeve, 8-ejector rod, contact, 9-connecting rod, 10-slide rail and 11-electric field line
Detailed Description
The invention will be described in further detail with reference to the accompanying drawings and examples
Referring to fig. 1, the apparatus for performing automatic scan tracking according to the present embodiment controls the movement of an arc by changing the magnitude and direction of electric field distribution, which includes: an electric field excitation power supply, an electric field polar plate, a spring device, a supporting sleeve, a rotating mechanism and the like. The electric field excitation power supply outputs voltages with the same size and the same polarity to the electric field polar plates to generate an electric field, the distance between the polar plates is changed through the rotating mechanism, so that the size and the direction of the electric field are periodically changed, the traction arc regularly performs welding seam scanning motion, the Hall sensor receives corresponding data from the change of welding voltage when the arc motion is received, the data are input into the data analysis system to be analyzed to obtain corresponding welding seam position parameters, the parameters are input into the adjusting mechanism, and the adjusting mechanism adjusts the position of the welding gun according to the obtained data, so that automatic tracking of the welding seam is realized.
Referring to fig. 2, four symmetrically distributed through holes are formed in the wall of the supporting sleeve, a spring device is installed at each through hole, contacts of the spring device are placed on the outer wall of the sleeve, the springs are placed in clamping grooves in the sleeve, connecting rods with polar plates are placed between the springs and the ejector rods, when the contacts are extruded, the ejector rods drive the connecting rods to move inwards, the electrode plates move inwards, and the springs are extruded and contracted; when the contact is not pressed by pressure, the spring will restore the original length to push the ejector rod and the connecting rod to move outwards, and the electrode plate also restores to the original position.
In the embodiment, referring to fig. 3, fig. 4 and fig. 5, the sensor for tracking electric field arc corresponds to a weld position diagram of a welded workpiece, when the electrode plate position of fig. 3 is not moved, the electric arc after the tungsten electrode is started is at the position and form of the weld, and after the electrode plate position is moved, the balance of the electric field at the tungsten electrode is broken to generate an electric field with a size different from 0. Under the action of the electric field, the electric arc is acted by the electric field force, and the traction electric arc deviates from the direction pointed by the electric field, so that the welding seam on the right side of the weldment is scanned. Meanwhile, the voltage of the electric field polar plate is changed, the angle and the distance of the electric arc deflection can be changed, the distance of other electrode plates is changed, the generated combined electric field direction can be changed, the electric arc can deflect leftwards under the traction of electric field force, the welding seam on the left side of a welding piece is scanned, and the deflection direction of the electric arc is controlled by controlling the distance of the electrode plates relative to a tungsten electrode.
When the arc scans the welding seam back and forth under the action of an electric field, relevant arc parameters are extracted by the Hall element sensor, and each welding seam position is provided with a corresponding welding parameter corresponding to the welding parameter, the data are input into the data analysis system to be analyzed to obtain corresponding welding parameters, the parameters are fed back to the adjusting mechanism, and the adjusting mechanism adjusts the welding path and the welding parameters according to the obtained data, so that accurate automatic tracking of the welding seam is realized.
Claims (2)
1. A welding seam identification method for controlling arc rotation by an electric field is characterized in that: the welding seam identification sensor is mainly composed of a welding power supply, a welding seam tracking real-time adjusting mechanism, a Hall sensor, an electric field excitation power supply, 4 electric field polar plates for generating a rotating electric field, a supporting sleeve, a rotating mechanism and the like, wherein the tungsten electrode is positioned at the right center of the supporting sleeve, 4 spring devices are symmetrically distributed on the supporting sleeve, contacts of the spring devices are positioned on the outer wall of the sleeve, and a connecting rod for connecting the polar plates is arranged outside the spring devices; the rotating mechanism consists of a motor, a connecting rod and rollers, tungsten electrodes of the welding gun do not move, 4 polar plates are symmetrically distributed around the tungsten electrodes, adjacent 2 polar plates form an included angle distribution of 90 degrees, voltages with the same size and the same polarity are simultaneously input to the 4 polar plates, so that electric fields around the tungsten electrodes are symmetrically distributed, when the rotating mechanism performs circular motion to drive the rollers to move, the rollers rotate along the outer wall of the supporting sleeve to roll and roll spring devices on the outer wall of the supporting sleeve to change the positions of the polar plates, at the moment, the balance of the symmetrical electric fields around the electric arcs is broken, resultant force of the electric fields deflects traction electric arcs, in each period, the electric arcs deflect in different directions under the action of resultant force of the electric fields in different directions, arc information is extracted through a Hall sensor, and then the welding seam tracking deviation is judged through the processing of the welding seam tracking real-time adjusting mechanism, so that the welding path is adjusted and welding parameters are adjusted, and automatic tracking of the welding seams is realized.
2. The method for identifying a weld by controlling arc rotation by an electric field according to claim 1, wherein: when the motor rotates, the motor drives the connecting rod to rotate together with the roller, the roller rolls circumferentially along the outer wall of the supporting sleeve, when the roller rolls to the spring contact, the spring contact drives the electrode plate to move inwards, when the roller moves away from the contact, the spring drives the electrode plate to restore to the original position, and the optical code disc records the position of the roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210205605.9A CN114700588B (en) | 2022-03-04 | 2022-03-04 | Weld joint identification method for electric field to control arc rotation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210205605.9A CN114700588B (en) | 2022-03-04 | 2022-03-04 | Weld joint identification method for electric field to control arc rotation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114700588A CN114700588A (en) | 2022-07-05 |
| CN114700588B true CN114700588B (en) | 2023-07-18 |
Family
ID=82166049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210205605.9A Active CN114700588B (en) | 2022-03-04 | 2022-03-04 | Weld joint identification method for electric field to control arc rotation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114700588B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08132240A (en) * | 1994-11-02 | 1996-05-28 | Mitsubishi Heavy Ind Ltd | Consumble electrode type welding torch |
| JPH11239878A (en) * | 1998-02-25 | 1999-09-07 | Babcock Hitachi Kk | Tig welding equipment |
| CN107008999A (en) * | 2017-04-26 | 2017-08-04 | 湘潭大学 | A kind of electricity, the weld seam tracking sensor of magnetic field dual control electric arc |
| CN208614052U (en) * | 2018-07-18 | 2019-03-19 | 佛山科学技术学院 | A kind of two dimensional ultrasonic vibration auxiliary fusion welding device |
| CN109530864A (en) * | 2019-01-03 | 2019-03-29 | 湘潭大学 | A kind of weld seam tracking sensor with magnetic field control TIG electric arc |
| CN109719369A (en) * | 2019-02-26 | 2019-05-07 | 湘潭大学 | A kind of welding seam tracking method of multipole capacitance sensing magnetic control real-time deviation correcting |
| CN209424721U (en) * | 2019-01-18 | 2019-09-24 | 闫国庆 | A kind of rotary arc sensor |
| CN113857623A (en) * | 2021-08-30 | 2021-12-31 | 哈尔滨工业大学（威海） | Magnetic control swinging arc magnetic circuit device for ferromagnetic steel GTAW narrow gap welding and application |
| CN113996883A (en) * | 2021-08-30 | 2022-02-01 | 哈尔滨工业大学（威海） | Double-pendulum wire welding device based on magnetic control arc GTAW narrow gap welding and utilization method |
-
2022
- 2022-03-04 CN CN202210205605.9A patent/CN114700588B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08132240A (en) * | 1994-11-02 | 1996-05-28 | Mitsubishi Heavy Ind Ltd | Consumble electrode type welding torch |
| JPH11239878A (en) * | 1998-02-25 | 1999-09-07 | Babcock Hitachi Kk | Tig welding equipment |
| CN107008999A (en) * | 2017-04-26 | 2017-08-04 | 湘潭大学 | A kind of electricity, the weld seam tracking sensor of magnetic field dual control electric arc |
| CN208614052U (en) * | 2018-07-18 | 2019-03-19 | 佛山科学技术学院 | A kind of two dimensional ultrasonic vibration auxiliary fusion welding device |
| CN109530864A (en) * | 2019-01-03 | 2019-03-29 | 湘潭大学 | A kind of weld seam tracking sensor with magnetic field control TIG electric arc |
| CN209424721U (en) * | 2019-01-18 | 2019-09-24 | 闫国庆 | A kind of rotary arc sensor |
| CN109719369A (en) * | 2019-02-26 | 2019-05-07 | 湘潭大学 | A kind of welding seam tracking method of multipole capacitance sensing magnetic control real-time deviation correcting |
| CN113857623A (en) * | 2021-08-30 | 2021-12-31 | 哈尔滨工业大学（威海） | Magnetic control swinging arc magnetic circuit device for ferromagnetic steel GTAW narrow gap welding and application |
| CN113996883A (en) * | 2021-08-30 | 2022-02-01 | 哈尔滨工业大学（威海） | Double-pendulum wire welding device based on magnetic control arc GTAW narrow gap welding and utilization method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114700588A (en) | 2022-07-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105458483B (en) | Postwelding weld joint tracking robot automatic deviation correction and ultrasonic impact system | |
| EP0165501B1 (en) | Image processing welding control | |
| CN108890102B (en) | Method for swinging magnetic control plasma arc | |
| CN1012849B (en) | The scanister of product ultrasound examination | |
| EP2908978A1 (en) | Robotic laser seam stepper | |
| CN114700588B (en) | Weld joint identification method for electric field to control arc rotation | |
| CN207997064U (en) | A kind of battery case cap welding equipment | |
| CN114072251A (en) | Electron beam welding device | |
| CN111151832A (en) | Rotary arc milling device, milling machine tool and control system thereof | |
| JP2791400B2 (en) | Consumable electrode type arc welding method and arc welding apparatus | |
| CN114505561B (en) | Method and device for correcting magnetic bias blowing of arc through hole welding by using externally applied magnetic field | |
| JPH1085936A (en) | Consumable electrode type arc welding method and arc welding device | |
| US4721842A (en) | Beam position correction device | |
| EP3575028A1 (en) | Method for processing insulator and foreign object, and device for same | |
| CN219274755U (en) | Device for butt welding thick plates in large gap | |
| CN114393280B (en) | Large-curvature weld joint deviation recognition method based on asymmetric longitudinal magnetic field sensing | |
| SU1260142A1 (en) | Method and apparatus for electron-beam welding | |
| RU2433023C1 (en) | Method for electron-beam welding | |
| CN106425076A (en) | Method and system for teaching tracing of welding seam of electron beam welding machine | |
| KR100481974B1 (en) | One gantry of three head three pole in both side automatic welding machine for panel fabrication | |
| CN206200334U (en) | Electron-beam welder weld seam teaching searching system | |
| CN114406408B (en) | Two side wall fusion control device for automatic welding of narrow-gap MAG/MIG | |
| US3814896A (en) | Hole center locator | |
| JPH01278976A (en) | Electron beam welding equipment | |
| JP2569968B2 (en) | Beam alignment adjustment method for electron beam processing machine |
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 |