482 results about "Welding power supply" patented technology

The invention provides an intelligent high-performance collaborative welding robot system, which belongs to the technical field of welding robots and comprises a multi-degree-of-freedom welding robot body, an intelligent control system, a high-performance welding power supply and auxiliary equipment. A welding process control module firstly obtains three-dimensional information of a workpiece based on visual inspection to construct a welding path; then selecting matched process parameters according to material characteristics and welding seam shapes; establishing a welding error matrix to monitor the welding process in real time; constructing a parameter error adjustment matrix for dynamic adjustment; analyzing parameter fluctuation by adopting a neural network to identify molten pool characteristics; the pre-trained neural network is used for evaluating the welding seam quality; and finally, a multi-robot collaborative welding strategy is integrated to achieve efficient operation, and the technical problem that in the prior art, welding process parameters in a welding robot are difficult to adjust accurately in real time so as to adapt to complex working condition changes is solved.

The invention provides a self-adaptive fuzzy control system for an inverter type arc welding power supply, and belongs to the field of welding process control and equipment automation, and the self-adaptive fuzzy control system specifically comprises the steps that a sensor module collects working numerical values corresponding to key parameters in the welding process in real time; the data processing unit converts the working values into a fuzzy set; the fuzzy controller executes fuzzy reasoning on the fuzzy set based on a preset fuzzy rule base so as to output a fuzzy control signal; the data processing unit performs defuzzification on the fuzzy control signal and converts the fuzzy control signal into an accurate control signal; the inverter power supply module receives the defuzzified accurate control signal to adjust the output power of the welding power supply; the feedback system monitors real-time parameters of welding seam quality in the welding process and transmits the real-time parameters to the self-adaptive module so as to realize closed-loop control; and the adaptive module dynamically adjusts the fuzzy rule base and the membership function according to the welding quality information provided by the feedback system. According to the processing scheme, the control precision and adaptability of the system are improved.

The invention discloses a magnetic control arc GTAW-GMAW composite narrow gap welding system and method. The system comprises a GTAW welding gun, a GMAW welding gun, a magnetic conductive iron core, a magnet exciting coil, a magnetic boot, an assembling clamp, a GTAW welding power source, a GMAW welding power source and a magnetic control power source. The GTAW welding gun, the GMAW welding gun, the magnetic conductive iron core, the magnet exciting coil and the magnetic shoe are fixed through the assembling clamp to form a welding assembly, and the welding assembly is connected with an end effector of the robot. The GTAW welding gun is connected with a GTAW welding power source through a cable. The GMAW welding gun is connected with a GMAW welding power supply through a cable; the excitation coil is connected with a magnetic control power supply through a cable; the GTAW welding power source, the GMAW welding power source and the magnetic control power source are in communication connection with the robot control system. The defect of incomplete fusion in narrow-gap welding of thick stainless steel plates and high-strength steel is effectively overcome, the optimized energy distribution not only refines the weld structure and improves the mechanical property of a joint, but also reduces deformation caused by heat input, and a stable and reliable high-quality welding result can be obtained.

The invention relates to the technical field of data processing, and discloses a high-temperature early warning method and system for a welding device. The method comprises the following steps: carrying out multi-point temperature measurement by using a K-type thermocouple and an infrared thermal imager; fourier heat conduction calculation is conducted on the welding heat field; extracting temperature anomaly region features through thermal gradient analysis; carrying out multi-parameter risk assessment by combining material melting point parameters; a multi-channel alarm instruction is output through the industrial control bus; and current-voltage curve real-time adjustment is conducted on the welding power source, and closed-loop self-adaptive control is achieved. According to the method, a complete closed-loop system from multi-sensor temperature collection, thermal field analysis, abnormal feature extraction and risk assessment to multi-stage alarm and self-adaptive control is established, so that early recognition and accurate control of thermal abnormality in the welding process are realized, and the welding quality and the production safety are remarkably improved.

A tool less method of connecting a welding-type power source with a cart is disclosed. In some examples, the cart may be configured to carry one or more gas bottles (and / or cylinders). In some examples, the power source housing and the cart may connect at interfacing ends and / or walls of the housing and cart. A connector, such as a clip for example, may span the interface to connect the power source housing and the cart. Catches (e.g. slots, holes, crevices, and / or protrusions) may be formed in and / or on the power supply housing and / or cart proximate to the interfacing ends and / or walls. In some examples, the catches may be aligned. In some examples, the cart and / or power source housing may include alignment surfaces to assist with alignment. The connector may engage the aligned catches to connect the welding-type power source and cart together at the interface.

The invention provides an arc voltage sampling circuit and method suitable for a welding power source. The arc voltage sampling circuit comprises an anti-interference absorption unit, a sampling conditioning unit and an isolation conversion unit. The anti-interference absorption unit is electrically connected to the output end of the welding power source so as to collect arc voltage signals. The anti-interference absorption unit comprises two common-mode absorption capacitor banks connected between a positive bus and a negative bus in series, and the middle point of the two common-mode absorption capacitor banks is electrically connected to the ground. The sampling conditioning unit comprises a sampling network and a filter capacitor, the sampling network comprises a plurality of divider resistors connected in series between positive and negative buses, the filter capacitor is connected in parallel with the output of the sampling network, and at least one stage of RC filter is formed between the filter capacitor and the divider resistors in the sampling network. The isolation conversion unit comprises an optical coupling isolator and a conversion circuit. The optical coupling isolator isolates the arc voltage sampling signal and converts the arc voltage sampling signal into a switching value signal or an analog quantity signal with various output amplitudes based on the conversion circuit.

The invention relates to the technical field of welding robots, in particular to a full-automatic walking intelligent welding robot. According to the technical scheme, the full-automatic walking intelligent welding robot comprises an I-shaped iron rail, a walking positioning trolley, a welding power source, a wire feeder, an industrial computer, a discharging mechanism, a placing mechanism, an adjusting module, a three-dimensional scanner and a welding gun. Welding materials are stored through a discharging mechanism, a placing mechanism and an adjusting module which can be used for taking out the welding materials, placing the welding materials to a welding position and driving a welding gun to reach a proper welding angle, a three-dimensional scanner used for sending three-dimensional coordinate points of a welding piece to an industrial computer is arranged at the upper end of the adjusting module, and wheel flanges are designed on a driving wheel and a driven wheel of a walking mechanism. By means of the design, it can be guaranteed that the positioning trolley can accurately take the edge of the I-shaped iron as the positioning reference, so that the welding track is accurately controlled, and meanwhile the design of the wheel flanges can prevent the trolley body from slipping off and instability caused by linear deviation of the I-shaped iron.

An example welding includes a torch head and a handle including a first coolant line configured to conduct coolant to the torch head, a second coolant line configured to conduct the coolant away from the torch head, a first welding power conductor within the first coolant line, and a second welding power conductor within the second coolant line, the first and second welding power conductors configured to carry electric current to the torch head.

The invention relates to the field of electric arc welding, and discloses a method for monitoring TIG welding quality in real time based on a molten pool camera, and the method comprises the following steps: S100, obtaining an image of a welding area through the molten pool camera; s200, identifying a tungsten needle and a workpiece groove in the image, and calibrating imaging parameters of the image according to the actual size of the tungsten needle; s300, the relative position of the tail end of the tungsten needle and the workpiece groove is obtained, and the position of the tungsten needle is adjusted according to the relative position; s400, TIG welding is conducted on the groove of the workpiece, and a real-time image in the welding process is obtained through a molten pool camera; and S500, relevant welding data are obtained from the real-time image, the position state of a tungsten needle and a workpiece groove and / or the working state of a welding power source are / is controlled in real time according to the relevant welding data, welding is stopped and an alarm is given when the data exceed a set threshold value range, the change of welding parameters can be monitored in real time, and the quality of a welding seam is guaranteed. The invention further discloses welding equipment for monitoring the TIG welding quality in real time based on the molten pool camera.

Disclosed handheld welding devices include: an energy storage device; power conversion circuitry configured to convert input power from the energy storage device to output welding power; a wire feeder configured to deliver welding wire and / or a gas valve configured to control flow of gas from a gas source; a front assembly configured to conduct the welding power to a welding electrode, wherein the front assembly is swappable between two or more of a wire-fed welding process, a stick welding process, or a tungsten electrode welding process; control circuitry configured to control the power conversion circuitry and the at least one of the wire feeder or the gas valve based on the configured one of the two or more welding processes, to selectively provide the welding power and at least one of the welding wire or the gas to the front assembly in response to an input device; and a housing.

To simplify a circuit configuration for rectifying and converting high-frequency power that has been transformed.SOLUTION: A power supply unit 100 for alternating current welding includes a direct current power supply 1, an inverter 2, a transformer 3, a first bidirectional switch 4, a second bidirectional switch 5, a first output end 6, a second output end 7, a smoothing reactor 9, and a controller 10. The controller 10 performs at least one of a positive-side rectification control and a negative side rectification control. The positive-side rectification control is for supplying full-wave positive direct current voltage between a first output terminal 6 and a second output terminal 7 by first and second bidirectional switches 4, 5 rectifying a two-phase alternating voltage output from a secondary winding 32 of a transformer 3. The negative side rectification control is for supplying full-wave negative direct current voltage between the first output terminal 6 and the second output terminal 7 by the first and second bidirectional switches 4, 5 rectifying the two-phase alternating voltage output from the secondary winding 32 of the transformer 3.SELECTED DRAWING: Figure 1

The invention discloses gas metal arc welding equipment and an arcing method.The equipment comprises a welding gun, a welding power source and a shielding gas device, the welding power source and the shielding gas device are connected with the welding gun, the welding gun is connected with a wire disc through a servo wire feeder, and the welding power source comprises a main power source and an auxiliary power source. The double-power-supply structure of the auxiliary power supply and the main power supply is adopted, the auxiliary power supply is used for outputting arc striking current, small and stable electric arcs are formed in cooperation with wire drawing separation of the servo wire feeder after welding wires make contact with a welding product, the effects that arcing is stable, the welding wires are not melted or melted and not exploded can be achieved, arc breaking is avoided, the arc striking success rate is high, and the production efficiency is high. And after the electric arc is stable, the main power supply outputs the welding current to carry out normal set welding, so that the welding arc-starting splashing in a conventional large current impact arc-starting mode can be effectively avoided, the arc-starting success rate is improved, and the welding quality is improved.

The invention discloses an ultra-low splashing robot welding system and method based on intelligent waveform control, and relates to the technical field of robot welding, and the method comprises the following steps: collecting historical welding data, extracting steady state molten pool characteristic parameters, and constructing an associated database; establishing a three-dimensional coordinate system, and setting and verifying a molten pool monitoring area; molten pool images and temperature field distribution are collected in real time, dynamic molten pool characteristic parameters are extracted, the deviation degree between the dynamic molten pool characteristic parameters and steady-state characteristics is calculated, and whether waveform adjustment is triggered or not is judged by combining arc signals; a reference waveform parameter is called according to the current working condition, the waveform adjustment amount is output through a neural network, an intelligent welding waveform instruction is generated, and a welding power source and a robot are controlled to move through a real-time communication link; and monitoring the state and the splashing amount of the molten pool after adjustment, evaluating the splashing inhibition rate, and optimizing the system. Intelligent closed-loop control in the welding process is achieved, splashing is remarkably reduced, the welding stability and quality are improved, and the method is suitable for various automatic welding scenes.

A wheeled, height-adjustable welding robot, characterized in that it comprises: a wheeled chassis comprising a traveling frame and a wheel assembly disposed at the bottom of the traveling frame and rotatably connected to the traveling frame; a support arrangement arranged below the chassis and telescopically connected thereto for exerting a supporting force on the wheeled chassis when it is stationary; a height-adjustable welding robot assembly comprising a lifting mechanism fixedly connected to the upper end surface of the traveling frame, a robot lifting platform vertically displaceably connected to the lifting mechanism, and a welding robot assembly fixedly arranged above the robot lifting platform; a welding power supply arrangement arranged above the traveling frame.

The invention relates to a multi-modal sensing fusion-based automatic correction method and system for a welding robot body, the system comprises a three-level distributed architecture of a sensing layer, an edge layer and a control layer, the sensing layer is integrated with a millimeter wave radar, a camera, a six-dimensional force / torque sensor, a welding power supply data acquisition module and an acoustic emission sensor, and multi-modal data acquisition is realized; the edge layer runs a fusion algorithm through an embedded AI computing platform carrying a GPU to complete data processing and decision making; and the control layer receives the deviation correction instruction to drive the robot to execute motion correction. The method comprises the steps of multi-modal data real-time acquisition and synchronization, data preprocessing and feature extraction, multi-source information fusion and decision making, and real-time control and execution. The problems of single sensing dimension, response delay, weak anti-interference capability and the like in the prior art are solved, the robustness, the real-time performance and the deviation correction precision of the system are improved, full-automatic intelligent welding is realized, and the method is suitable for high-precision scenes such as shipbuilding and pressure vessel welding.

The invention discloses a split type gas shielded welding machine, and relates to the technical field of welding machines, the split type gas shielded welding machine comprises a bottom plate, a welding power source is arranged on the top of the bottom plate close to the edge of one side, one end of the welding power source is coupled with an equipment welding gun through a wire, and a gas tank used for conveying shielding gas to the welding gun is arranged on the top of the bottom plate close to the center. When the ship body welding device is used and before a ship body is welded, due to the fact that many impurities and metal particles exist on the surface of the ship body, in the welding process, firstly, the impurities on the surface of the ship body are cleaned through rotation of cleaning equipment, meanwhile, the surface of the ship body is heated through an infrared heating pipe, the follow-up ship body welding quality is improved, and meanwhile, the welding efficiency is improved. The two negative pressure pumps are started, negative pressure is generated in the dust collection bin, cleaned impurities are collected into the dust collection bin under the action of pressure difference to be collected, and through the action of the pretreatment assembly, the split type gas shielded welding machine integrates pretreatment, cleaning and welding.

The invention belongs to the technical field of welding, and particularly relates to an online repair welding device for a gate valve seat. Comprising a mechanical body, an adapter, a welding power source, an upper computer, an argon bottle and a pipeline, the mechanical body is connected with the welding power source through the pipeline, the welding power source is connected with the upper computer and the argon bottle through the pipeline, and the mechanical body is installed on a valve through the adapter. The invention has the following beneficial effects: light weight design is adopted, so that carrying is convenient; welding operation can be remotely controlled; the structure is compact, and welding operation in narrow space in the valve can be met; welding of valve seats of different models and different diameters can be adapted by replacing the adapter; the states of welding wires, tungsten electrodes and molten pools can be remotely observed, and the welding quality is guaranteed.

A welding wire feeder includes a welding wire feed drive configured to drive welding wire towards a welding application, wire feed control circuitry coupled to and configured to control the welding wire feed drive. The welding wire feeder includes power conversion circuitry configured to receive polarized input power from a welding power source via input connections with defined polarities and to convert the polarized input power to welding output, sensing circuitry configured to detect the polarity of the polarized input power when connected to the input connections, and welding process control circuitry. The welding process control circuitry is coupled to the power conversion circuitry and the sensing circuitry. The welding process control circuitry is configured to provide the polarized input power to the power conversion circuitry only if the polarity of the polarized input power corresponds to the defined polarities of the input connections.

The invention discloses an energy storage welding power source based on a rechargeable battery pack, and belongs to the technical field of welding power sources, the energy storage welding power source comprises a welding power source outer shell, and the rechargeable battery pack, an intelligent charger, a power source body and a temperature sensor are arranged in the welding power source outer shell; an air inlet and an air outlet are formed in the welding power source outer shell, and a purification mechanism is arranged in the welding power source outer shell. A pipeline opening in one end of the ventilation pipeline directly faces the air inlet, and a shielding assembly is arranged between the pipeline opening of the ventilation pipeline and the air inlet. And a drying assembly is arranged on the mounting plate frame. According to the invention, field, high-altitude and external-power-supply-free welding work can be realized, and the battery can be charged while working with external power supply; and a high-voltage battery pack scheme is adopted, so that the battery discharge current is small, the battery loss is small, the charging speed is high, the battery performance requirement is low, and heat dissipation and dust prevention can be quickly realized.

The utility model relates to a multi-nut one-time welding machine which is provided with a machine frame, a welding power source is arranged in the machine frame, a lower electrode base is arranged on the lower portion of the machine frame, and an upper electrode base is arranged on the upper portion of the machine frame. The lower electrode holder is provided with a lower conductor which is connected and conducted with an electrode of a welding power supply; a plurality of conductive supporting tables are arranged at the top of the lower conductor; a plurality of sets of mutually independent upper electrode assemblies are arranged on the upper electrode seat and the mounting bracket; the upper electrode assembly is provided with a vertically downward conductive voltage column; the upper portion of the conductive pressing column is connected with an upper electric conductor, and a pressing driving element is installed above the upper electric conductor. The upper conductor is connected with a conductive contact, and a conductive driving element is mounted at the top of the conductive contact; and a conductive plate is arranged below the conductive contact. According to the utility model, the plurality of nuts are simultaneously fixed on the sheet metal part by utilizing the conductive pressing columns, then the conductive driving elements act in sequence, and the conductive pressing columns above the plurality of nuts are electrified in sequence by utilizing one welding power supply, so that the welding is realized.

The utility model belongs to the technical field of welding power supply interface circuits, and particularly discloses a pulse interface circuit between a PLC (Programmable Logic Controller) and a TIG (Tungsten Inert Gas) welding power supply, which is characterized in that a pin 1 of an analog switch chip accesses a peak welding current input signal through a terminal 3 of a wiring terminal; a pin 5 of the analog switch chip is connected to a base value welding current input signal through a terminal 4 of the wiring terminal, a pin 10 of the analog switch chip is connected to a pulse width modulation signal through a terminal 1 of the wiring terminal, a pin 3 of the analog switch chip is electrically connected with one end of a voltage-regulator tube D4, and the other end of the voltage-regulator tube D4 is connected to a negative electrode of the power supply. According to the utility model, a pulse interface circuit is formed through the connection relation among the analog switch chip, the voltage-regulator tube, the resistor, the capacitor and the wiring terminal, so that a pulse width modulation signal PWM and an analog quantity signal of the PLC controller are converted into a pulse signal of a TIG welding power supply.

A system for autonomously welding piping or tubing from the inside comprising: an autonomous guided vehicle configured to travel within a pipe or tube; one or more robotic welders mounted on the autonomous guided vehicle, each robotic welder having a welding torch and a camera oriented to capture welding image data mounted thereon, each robotic welder configured to weld a portion of an internal circumference of a seam between adjacent segments of the pipe or tube; a welding power supply, a wire drum, a gas cylinder, and a welding controller connected to each robotic welding arm and mounted on the autonomous guided vehicle; and, a system controller mounted on the autonomous guided vehicle, the system controller operatively connected to control each of the one or more robotic welders and associated welding power supply, wire drum, gas cylinder, and welding controller.

The utility model relates to a mobile liftable robot. The welding robot comprises a trolley body, the top of the trolley body is connected with a welding power source, a cooling water tank, a wire feeder, a gas storage tank, a control cabinet and a liftable stand column, the top of the stand column is connected with a robot body through a fixing mechanism, the fixing mechanism comprises a mounting plate and a mounting base, and the mounting plate is connected with the telescopic end of the stand column; a mounting plate is arranged on the mounting base, a plurality of first mounting holes are formed in the mounting plate, the mounting base is in a circular truncated cone shape, the lower bottom surface of the mounting base is connected with the mounting plate, the upper bottom surface of the mounting base is connected with a robot body, a plurality of receding grooves are formed in the side surface of the mounting base, and vertically downward second mounting holes are formed in the inner walls of the receding grooves. According to the welding robot, the stroke in the Z direction can be expanded, and compared with a conventional welding robot with a fixed base, the welding range can be greatly enlarged, so that auxiliary mechanisms such as large external shafts do not need to be manufactured.

The utility model belongs to the field of pipeline welding, and particularly discloses an efficient welding system for single-side welding and double-side forming of a subsea pipeline, which comprises bottom sealing and hot welding equipment, filling and capping welding equipment and a rigid track, the bottom sealing and hot welding equipment comprises a first welding unit, the first welding unit comprises a CMT welding power source and a single-torch welding trolley, and a CMT welding gun electrically connected with the CMT welding power source is fixedly connected to the single-torch welding trolley; the rigid track is detachably mounted on the subsea pipeline, and the single-torch welding trolley is detachably mounted on the rigid track when the subsea pipeline is welded; and the filling and capping welding equipment is used for welding the subsea pipeline subjected to bottom sealing and hot welding. By means of the method, the single-face welding and double-face forming effect under the gapless assembly can be achieved under the condition that copper liners are not adopted for bottom sealing and hot welding, meanwhile, the filling efficiency is high during filling and cosmetic welding, the welding efficiency can be improved, and meanwhile the method is suitable for welding of a whole series of subsea pipelines such as common carbon steel, acid pipes and composite pipes.

The invention discloses a welding power supply extension module integrating arc voltage tracking and welding machine control functions and a welding control method, and belongs to the technical field of electric arc welding. In order to solve the problems that arc voltage tracking and welding machine control are mutually independent and cannot cooperate in real time in the existing TIG welding process, so that the welding process is tedious in operation and unstable in quality, the system comprises a core processor for executing an arc voltage tracking control algorithm and a welding parameter adjusting algorithm; the signal conditioning circuit is used for collecting and conditioning a current signal and a voltage signal output by the welding power supply; the welding power supply control module is provided with a plurality of interface circuits used for being connected with welding power supplies of different interface types; the core processor receives state information of the welding process through the high-speed communication module and generates a first control instruction used for adjusting output parameters of a welding power source and a second control instruction used for adjusting the height of a welding gun according to the state information and current signals and voltage signals collected by the signal conditioning circuit. The method is used for electric arc welding.

The welding power source host comprises a power source box, an air inlet and an air outlet are fixedly connected to the two sides of the power source box correspondingly, mounting grooves are formed in one side of the air inlet and one side of the air outlet, and four sets of first hydraulic rods and first springs are fixedly connected into the mounting grooves; first positioning plates are fixedly connected to the other ends of the first hydraulic rods and the first springs, rotating doors are rotatably connected to the two sides of one ends of the air inlet and the air outlet, two sets of second hydraulic rods and second springs are fixedly connected to one sides of the rotating doors, and second positioning plates are fixedly connected to the other ends of the second hydraulic rods and the second springs; and a mounting plate is arranged in the mounting groove in a sleeved mode, and a filter plate is fixedly connected to the middle of the mounting plate, so that disassembly and assembly of the heat dissipation filter device can be facilitated, and noise generated by the filter device under air circulation can be reduced.

The invention discloses an infrared induction feedback type permanent magnet magnetic field auxiliary TIG (Tungsten Inert Gas) welding device and a working method thereof, and the device comprises a TIG welding gun arranged above a workpiece, a welding power supply connected with a tungsten electrode in the TIG welding gun, a permanent magnet group arranged above the workpiece, and a magnet driving mechanism for driving the permanent magnet group, the infrared temperature detector is arranged on the side surface of the workpiece; the driving permanent magnet set and the infrared temperature detector are both connected with the control system, the infrared temperature detector detects the arc temperature distribution condition in real time and feeds back the detected arc temperature to the control system, and the control system compares the arc temperature with a preset threshold value and sends a control signal to the magnet driving mechanism according to the comparison result. The magnet driving mechanism adjusts the distance between the two permanent magnets in the permanent magnet group and the electric arc based on the control signal, and dynamic adjustment of the magnetic field intensity is achieved. According to the invention, the size of the magnetic field can be flexibly changed, and high energy consumption and electromagnetic interference of the electromagnetic coil can be avoided.

The invention relates to the field of reinforcing mesh machining, in particular to a robot reinforcing mesh welding workstation and a method thereof.The robot reinforcing mesh welding workstation comprises a supporting table, an industrial robot body and a welding power source are arranged on one side of the supporting table, and a robot control cabinet is arranged at the top of the welding power source; and one side of the industrial robot body is connected with a welding head. By arranging the industrial robot body, the welding head and the 3D line laser camera, the reinforcing mesh can be automatically welded, the automation degree is high, the machining efficiency of the reinforcing mesh is improved, by arranging a first electric push rod and a protective cover, the position of the protective cover can be adjusted, welding slag generated in the welding process is shielded and protected, and the welding quality of the reinforcing mesh is improved. And by arranging a dust suction hood, a hose, a dust collection box and an exhaust fan, smoke generated in the welding process can be sucked into an inner cavity of the dust collection box, the smoke is filtered and purified, and the situation that the smoke is directly discharged to pollute the working environment is avoided.

The invention provides combined circular part welding equipment which comprises a robot assembly, an L-shaped positioner, an automatic clamp, cold liquid circulating equipment and a welding power source, and an automatic clamping device is installed on the L-shaped positioner; the automatic clamp is used for clamping the combined circular part; the L-shaped positioner is used for turning over the automatic clamp in the welding production process; the robot assembly comprises a robot water-cooling welding gun and is used for welding the combined circular part; the welding power source is connected with the robot water-cooling welding gun, the cold liquid circulation equipment is communicated with the robot water-cooling welding gun and the cold plate type liquid cooling device, and the cold liquid circulation equipment pumps cooling liquid into the robot water-cooling welding gun and the cold plate type liquid cooling device. And cooling liquid of the cold liquid circulating equipment flows into the cold plate type liquid cooling device I and the cold plate type liquid cooling device II. The combined circular part is automatically welded through the robot assembly, the L-shaped positioner, the automatic clamp and the cold liquid circulation equipment, and therefore the purpose of improving the welding efficiency is achieved.

The invention discloses a double-tungsten-electrode arc welding system and method based on high-frequency controllable square waves, and belongs to the technical field of mechanical engineering and welding. The system comprises a high-frequency waveform editing module I and a high-frequency waveform editing module II which are connected with a TIG welding power source and a double-tungsten-electrode welding gun correspondingly, and electric arc cooperative control is achieved by independently regulating and controlling current waveforms. The method comprises the steps of surface pretreatment, current parameter configuration, switching of a high-frequency square wave mode after short-circuit arcing, and real-time monitoring of molten pool morphology optimization parameters. The method breaks through the limitation that traditional TIG welding is low in deposition efficiency and high in arc pressure, the arcs are contracted through the high-frequency pulse magnetic field, double-arc independent regulation and control and heat input optimization are achieved, the method is suitable for thin plate high-speed welding and thick plate large-current welding, and the problems of pits and undercut defects are solved. The method has the functions of waveform real-time editing and closed-loop feedback regulation and control, shows excellent process adaptability in the fields of aerospace, nuclear power and the like, and provides a novel welding path for precision manufacturing.