Abstract: A status alarm mask may include a main body to cover a face and eyes of a user. The mask may include a filter unit placed at a front surface portion of the main body to protect the eyes. The mask may include a communication module configured to establish a communication session with a welding torch held by the user and receive at least one inclination value of the welding torch being operated by the user, through the communication session. The mask may include a controller configured to determine whether a work of the torch is in progress, on the basis of an operation of the filter unit and to generate notification output data when the work of the torch is in progress. The mask may include an output unit placed at a location not overlapping with the filter unit and configured to receive and output the notification output data.

Abstract: A resistance spot welding method comprises: performing test welding; and performing actual welding after the test welding, wherein the test welding is performed under each of two or more welding conditions. In the test welding, for each of the welding conditions, an electrode force parameter from when electrode force application to parts to be welded starts to when a set electrode force is reached before start of current passage and a time variation curve of an instantaneous amount of heat generated and a cumulative amount of heat generated are stored.

Abstract: A welding-type system includes a wire feeder to provide an electrode wire to a welding-type torch. A welding-type power supply to provide power to one or both of the welding-type torch or the wire feeder. A controller is configured to control a sense voltage circuit to provide a sense voltage to charge a control capacitor, monitor a voltage feedback signal, determine that a wire feeder is activated based on a first change in the voltage feedback signal, control the switched mode power supply to provide a constant voltage output signal during a welding operation, control the switched mode power supply to provide the pulsed power output in response to completion of the welding operation, determine that the wire feeder is deactivated based on a second change in the feedback signal, adjust a pulse rate of the output signal to achieve an RMS value below a predetermined RMS level.

Abstract: A retrofit module includes at least one of a current sensing component that has a first circuit or a voltage sensing component that has a second circuit. The current sensing component and the voltage sensing component may be disposed in a torch head of a welding or plasma cutting torch. The current sensing component is configured to measure a welding or plasma cutting current of the torch head, and the voltage sensing component is configured to measure a welding or plasma cutting voltage of the torch head.

Abstract: A machine tool machining dimensions prediction device (100) includes: a data collector (10) to acquire driving state information of a machine tool; a feature amount extractor (211) to extract a feature amount from the driving state information; a data analyzer (311) to analyze the extracted feature amount; and a machining quality prediction model generator (312) to generate, from the analyzed information, a prediction model of a machining dimension of a workpiece. The machine tool machining dimensions prediction device (100) applies the feature amount and the driving state information to the prediction model during machining of the workpiece to predict a machining quality and refers to a machining dimension quality regulation to determine whether the machining quality satisfies a standard.

Abstract: Apparatus, systems, and/or methods are disclosed relating to welding systems that monitor welds performed by an operator. In some examples, the welding system monitors one or more welds performed using a welding tool, evaluates characteristics of the one or more welds in comparison to certain predetermined criteria, and determines a performance score for the operator based on the evaluation. In some examples, the characteristics of the one or more welds include the location of each of the one or more welds and/or the order in which the one or more welds are executed. In such an example, the predetermined criteria may include target locations for each of the one or more welds and/or a target order of execution. In some examples, the welding system may respond to deviations from the target locations and/or target order, such as by reducing a performance score, disabling weld operations, providing guidance to the operator.

Abstract: Adaptive packet scheduling for interference mitigation is disclosed. Current spectral information can be compared to historical spectral information to determine a likelihood of a future interference event. Based on the furfure interference event, a data frame can be adapted to mitigate the effect of the future interference event on wireless communication. The interference event can be related to an unintentional interference source that can have distinct interference characteristics distinguishing it from an intentional interference source. Comparison can be facilitated by a data store storing historical interference information related to one or more historical interference events.

Abstract: Systems and methods for welding are described. The welding system can include, for example, a welding power source, a welding torch, and a computer. The computer and the welding torch can be operatively coupled to the power source. A first weld is performed and its signature is saved by the computer. It is considered a high quality weld and is selected as a weld reference. A second weld is performed and its signature is saved by the computer. The computer then computes a single weld confidence result for the second weld based on a comparison between the signature data of the second weld and the signature data of the reference weld. A weld fault condition is triggered based on the single weld confidence result which causes the welding system to stop or to modify the welding operation, and/or which causes the welding system to send out communications relating to the triggering of the weld fault condition.

Abstract: A method for monitoring a spatter generating event during a welding application. The method includes capturing data that corresponds to a welding current of the welding application. The method also includes detecting parameters associated with a short circuit from the captured data. The method includes analyzing the detected parameters to monitor the spatter generating event during the welding application.

Abstract: An arc welding method of a consumable electrode type generating arc between a tip end of welding wire and a to-be-welded portion by feeding welding wire to the to-be-welded portion of a base material while supplying welding current having average current of 300 A or larger to the welding wire, to weld the base material, includes: feeding the welding wire at a speed of the tip end being inserted into a space surrounded by a concave melted portion formed in the base material by the arc generated between the tip end and the to-be-welded portion; periodically alternating between a small current period where the welding current has a small average value and droplet is transferred from the tip end to a bottom part of the melted portion and a large current period where the welding current has a large average value and droplet is transferred from the tip end to a side part of the melted portion; and controlling the welding current in the large current period so that droplet transfer from the tip end to the side part

Abstract: The present invention combines automatic process control feedback or process improvement recommendations based on capturing consumable data, running the consumable data through a data analytics processing system and establishing logical process improvement recommendations and actions based on consumable consumption ratios and process inefficiency correlations.

Abstract: A method to evaluate the integrity of spot welds includes one or more of the following: projecting light from a light source at a spot weld to illuminate the spot weld; capturing an image of the illuminated spot weld with a camera; transmitting information about the image of the illuminated spot weld to a central processing unit (CPU); and evaluating with the CPU the information about the image of the illuminated spot weld coupled with an artificial intelligence neural networked-based algorithm to determine the integrity of the spot weld in real time.

Abstract: An arc start adjustment device adjusting an arc start procedure in a welding process comprises an obtainment unit that obtains welding data indicating a welding state during or after a welding process, and a procedure adjustment unit that adjusts the arc start procedure such that the cycle time of the welding process is shortened based on welding data obtained by the obtainment unit.

Abstract: Recognizing interchangeable torch components, such as consumables, for welding and cutting torches includes determining that one or more interchangeable torch components installed in an operative end of a torch are genuine. Operational parameters for the one or more interchangeable torch components can also be determined. When the one or more interchangeable torch components are determined to be genuine, an indicator assembly can be activated to provide a first indication. When the operational parameters are implemented at a power supply connected to the torch, the indicator assembly can be activated to provide a second indication.

Abstract: A method of determining weld quality includes the step of providing a reference weld signature having a first shape. A weld signature of a welding parameter is captured, wherein the weld signature of the welding parameter has a second shape. The first shape is automatically compared to the second shape and a weld signature shape difference between the first shape and the second shape is determined. A weld fault condition is determined based on the weld signature shape difference.

Abstract: Various systems and methods are provided that allow a weld sequencer to use a statistical analysis of generated reports to automatically determine weld parameter limits for the welds defined by various functions in a sequence file. For example, the weld sequencer can take reports generated for a specific type of part and statistically analyze the weld data included in the reports according to a set of analysis parameters provided by a user. The weld sequencer can use the statistical analysis to identify and remove outlier data and define a set of weld parameter limits based on the remaining data. The weld parameter limits can define a low limit and/or a high limit for one or more weld parameters associated with a function. The weld sequencer can then update the sequence file to include the weld parameter limits.

Abstract: Embodiments of systems and methods to relate welding wire to a welding power source are disclosed. One embodiment is a networked system having a server computer. The server computer is configured to receive first data including at least one of an identity or a location of a consumable source of welding wire, and at least one of a weight status, indicating a change in weight, or an energization status, indicating an energization state, of the consumable source of welding wire. The server computer is configured to receive second data including at least one of an identity or a location of a welding power source, and an activation status indicating an activation state of the welding power source. The server computer is configured to match the welding power source to the consumable source of welding wire based on at least the first data and the second data.

Abstract: A method and apparatus of communicating control signals to a welding power source from a remote location includes a welding system operated by control signals transmitted by a wireless remote control that can be remotely located from the welding power source. A plurality of welding parameters in the welding system are set and adjusted in response to wireless command signals transmitted to a receiver that is connected to the welding power source via a connection port and is further connected to a controller in the welding power source. In this regard, an operator is able to quickly and efficiently control a welding system from a remote location, with no more cables than are necessary to perform the intended task.

Abstract: A method, apparatus and system for enhanced welding visualization include splitting incoming light from the welding environment into at least a first optical path and a second optical path having different light levels using at least one beam splitter. Images of the split light having different light levels are captured using a respective imaging sensor. The images from the respective imaging sensors are fused to create a left-eye fused image and a right-eye fused image. The left-eye fused image is displayed on a display at a location of a left eye of a user and the right-eye fused image is displayed on a display at a location of a right eye of the user to provide a parallax-free, high dynamic range, representation of the welding environment.

Abstract: Welding systems including welding torch assemblies are provided. The welding torch assembly may include a welding torch adapted to be utilized in a welding operation to establish a welding arc between the welding torch and a workpiece. Shielding gas may be supplied to the welding torch for establishment of a gas shielding area around a weld pool. The welding torch assembly may also include a temperature sensing system having a non-contact temperature sensor coupled to the welding torch and adapted to sense a temperature of the workpiece at a location outside of the molten weld pool.

Abstract: A welding helmet for detecting arc data is provided. One embodiment of the welding helmet includes an arc detection system configured to detect one or more welding arcs that occur during one or more welding operations. The welding helmet also includes control circuitry configured to count a number of the one or more welding arcs detected by the arc detection system. The welding helmet includes a storage device configured to store the number of the one or more welding arcs.

Abstract: The present invention provides a system and a method for real time monitoring and identifying defects occurring in a three dimensional object build via an additive manufacturing process. Further, the present invention provides in-situ correction of such defects by a plurality of functional tool heads possessing freedom of motion in arbitrary planes and approach, where the functional tool heads are automatically and independently controlled based on a feedback analysis from the printing process, implementing analyzing techniques. Furthermore, the present invention provides a mechanism for analyzing defected data collected from detection devices and correcting tool path instructions and object model in-situ during construction of a 3D object. A build report is also generated that displays, in 3D space, the structural geometry and inherent properties of a final build object along with the features of corrected and uncorrected defects.

Abstract: Present embodiments include systems and methods for stick welding applications. In certain embodiments, simulation stick welding electrode holders may include stick electrode retraction assemblies configured to mechanically retract a simulation stick electrode toward the stick electrode retraction assembly to simulate consumption of the simulation stick electrode during a simulated stick welding process. In addition, in certain embodiments, stick welding electrode holders may include various input and output elements that enable, for example, control inputs to be input via the stick welding electrode holders, and operational statuses to be output via the stick welding electrode holders. Furthermore, in certain embodiments, a welding training system interface may be used to facilitate communication and cooperation of various stick welding electrode holders with a welding training system.

Abstract: A power supply system includes multiple power supply devices including a first power supply device and a second power supply device that are connected in common to a load. The first power supply device calculates control information for controlling voltage or current to be output to the load and controls the output to the load based on the calculated control information while transmitting the control information to the second power supply device. The second power supply device receives the control information and controls the output to the load based on the received control information while detecting current to be output from its own device to the load and transmitting current information to the first power supply device. The first power supply device receives the current information transmitted from the second power supply device and calculates control information based on the received current information and the current and voltage detected by its own device.

Abstract: A laser beam directed is moved relative to a workpiece to weld along a weld seam and form a weld pool in the area surrounding the laser beam. The weld pool has a characteristic oscillation frequency fco, and a laser power is modulated with a modulation frequency f and a modulation amplitude ?=1?Pmin/Pmax, where Pmin is minimal and Pmax is maximal laser power during a modulation period. For a normalized characteristic oscillation frequency ?co and a normalized modulation frequency ?, ??2.2*?co, with ?=f·df/?, where ? is the feed rate of the laser beam, and df is diameter of a beam focal spot. Also, ?co=f,cotest·df,cotest/vcotest, where fcotest is a measured characteristic oscillation frequency, df,cotest the diameter of the beam focal spot, and vcotest is the feed rate of laser beam, all during a test measurement without modulation of the laser power.

Abstract: A method for determining a value of arc voltage in a welding system, the welding system including a switch mode power supply and a controller that controls operation of the switch mode power supply, the method including, during an active power delivery stage of the switch mode power supply sensing a first internal voltage (V20) within the switch mode power supply prior to an internal inductor and a first output voltage (V21) of the switch mode power supply; during a freewheeling stage of the switch mode power supply sensing a second internal voltage (VF) within the switch mode power supply prior to the internal inductor and a second output voltage (V22) of the switch mode power supply; and determining the value of arc voltage based on the first internal voltage, the first output voltage, the second internal voltage, and the second output voltage.

Abstract: A robotic welding system comprises a supporting arm for attaching to a repositionable support structure, the supporting arm comprising a first mounting portion connectable to the repositionable support structure, and a second mounting portion rotatably coupled to the first mounting portion. A yaw rotary actuator rotates the second mounting portion about a yaw axis. A welding arm comprises a third mounting portion rotatably coupled to the second mounting portion of the supporting arm. A pitch rotary actuator rotates the third mounting portion about a pitch axis generally perpendicular to the yaw axis. A roll rotary actuator rotates a torch holder shaft about a roll axis generally perpendicular to the pitch axis. The shaft has a torch mounting portion for mounting a welding torch at an end thereof. A controller is operably coupled to the actuators to cause the welding torch to execute a welding pattern.

Abstract: Systems and methods are provided for indicating schedules in welding-type torches. A welding-type system may comprise a welding-type power source, a welding-type torch, driven by the welding-type power source, and a welding-type connector configured for connecting the welding-type power source to the welding-type torch. The welding-type torch may comprise one or more indication components configured for providing, to a user of the welding-type system, indications relating to at least one of operations of the welding-type torch, status of welding-type operations, or welding-type parameters. The one or more indications comprise an indication of a present value of a particular welding-type parameter that pertains to configuration of the welding-type power source; and the one or more indication components are configured to provide the indication of present value of the particular welding-type parameter without requiring a change to structure of the welding-type connector.

Abstract: A welding system includes a welding torch. The welding torch includes a sensor configured to detect a motion associated with the welding torch, a temperature associated with the welding torch, or some combination thereof. A display of the welding torch is activated, a determination is made that the welding torch has been involved in a high impact event, live welding using the welding torch is disabled, a software selection is made, or some combination thereof, based on the motion, the temperature, or some combination thereof.

Abstract: A system to support communication and control in a welding environment is disclosed. In one embodiment the system includes an internet-of-things (IoT) technology platform configured to provide scalable, interoperable, and secure communication connections between a plurality of disparate devices within a welding environment. The system also includes a welding power source configured to communicate with the IoT technology platform. The system further includes a computerized eyewear device. The computerized eyewear device includes a control and communication circuitry configured to communicate with the welding power source via the IoT technology platform. The computerized eyewear device also includes a transparent display configured to display information received from the welding power source via the IoT technology platform while allowing a user to view a surrounding portion of the welding environment through the transparent display.

Abstract: A system for aiding a user in at least one of welding, cutting, joining, and cladding operations is provided. The system includes a welding tool and a welding helmet with a face-mounted display. The system also includes a spatial tracker configured to track the welding helmet and the welding tool in 3-D space relative to an object to be worked on. A processor based subsystem is configured to generate visual cues based on information from the spatial tracker and transmit the visual cues to a predetermined location on the face-mounted display.

Abstract: A method and apparatus for providing a welding type power using a welding power circuit having a control input and a welding type power output, a feedback circuit and a controller connected to the control input and the feedback circuit is disclosed. The controller includes a parameter setting module and/or a process selection module that are connected to and responsive to at least one of the feedback circuit. The a process selection module can be responsive to the parameter setting module.

Abstract: Methods and apparatus for weld training are provided. An example weld training system includes a display device, an input device, a processor, and a machine readable storage device storing machine readable instructions. The instructions may be executed by the processor to: enable the user to design a weld procedure by selecting weld parameters; enable the user to simulate setting up a simulated physical welding environment; simulate a welding operation on a simulated workpiece using the selected weld parameters in a welding model and a setup of the simulated physical welding environment to determine a modeled result of the welding operation; display a simulation animation of the welding operation on the display device according to the simulation; and display the modeled result on the display device using at least one of an image of a surface of a weld bead or a cross-section of the weld bead and the workpiece.

Abstract: Embodiments of systems and methods for characterizing weldments are disclosed. One embodiment includes a method of generating an algorithm for classifying weldments as meeting or not meeting a specification. Training data is read by a machine learning system. The training data includes cross-sectional images of training weldments, truth data indicating whether the training weldments meet the specification or not, and training weld data associated with creating the training weldments. The machine learning system trains up an algorithm using the training data such that the resultant algorithm can classify a subsequent test weldment as meeting the specification or not meeting the specification when a cross-sectional image of the test weldment and test weld data used to create the test weldment are read and processed by the classification algorithm as trained.

Abstract: A method and system for internally determining, within a welding power supply, the energy input into a weld during a welding operation. The method includes determining a total energy input into the weld during a first time period, and determining a length of the weld made during the first time period.

Abstract: A welding device for automatically welding a workpiece by a welding robot using a welding wire includes a welding control device that controls operation and welding work of the welding robot. The welding control device includes a sensing unit configured to detect a position of the workpiece, a root gap calculating unit configured to determine a root gap, and a storage unit including wire melting information as a database of a proper welding current corresponding to a feeding rate for each of the welding wire. A lamination pattern and a welding condition are provided in accordance with the root gap determined by the root gap calculating unit and the wire melting information so that an amount of heat input is equal to or less than a predetermined amount of heat input.

Abstract: A welding target is irradiated with a laser beam so as to form a beam spot that moves relatively with respect to the welding target along a locus having a spiral shape rotating around a rotation center moving in a welding direction. The welding target is welded using the laser beam irradiated with. While the welding target is irradiated with the laser beam, the welding target is irradiated with the laser beam based on an interval coefficient which is a value indicating an overlapping degree of the locus having the spiral shape in the welding direction.

Abstract: In certain embodiments, a welding system includes an interface with a first input element configured to receive an input relating to a parameter of power delivered to a welding torch from a welding power supply, a second input element configured to receive an input relating to a rate of advancement of an electrode delivered to the welding torch from a welding wire feeder, a third input element configured to receive an input relating to whether the parameter of power and the rate of advancement of the electrode are automatically set, and a color display device configured to display the parameter of power and the rate of advancement of the electrode.

Abstract: Systems and methods to aid a welder or welding student. A system may provide a real-world arc welding system or a virtual reality arc welding system along with a computerized eyewear device having a head-up display (HUD). The computerized eyewear device may be worn by a user under a conventional welding helmet as eye glasses are worn and may wirelessly communicate with a welding power source of a real-world arc welding system or a programmable processor-based subsystem of a virtual reality arc welding system.

Abstract: A method and apparatus for short circuit welding is disclosed. They reduce the current prior to the short clearing by adjusting waveform parameters in response to past cycles. One or more parameter of the output is monitored and compared to one or more targets, and future waveform parameters are adjusted so that the monitored parameters are more likely to reach the one or more targets.

Abstract: Methods and apparatus to determine heat input to a weld are disclosed. An example welding-type power supply includes a power converter to convert input power to output welding-type power, and a controller configured to: during a welding-type operation, calculate average instantaneous power values of the welding-type operation for discrete, non-overlapping time periods by multiplying voltage measurements and corresponding current measurements; identify an end of the welding-type operation; determine a duration of the welding-type operation; calculate a total average instantaneous power of the welding-type operation based on the average instantaneous power values for the time periods and the duration of the welding-type operation; and output a first value representative of the total average instantaneous power and a second value representative of the duration of the welding-type operation.

Abstract: Embodiments of systems and methods to relate a human operator to a welding power source are disclosed. One embodiment is a networked system having a server computer. The server computer is configured to receive first data including at least one of an identity or a location of a welding helmet within a welding environment, and a triggering status indicating a triggering of an arc detection sensor of the welding helmet due to initiation of a welding arc. The server computer is configured to receive second data including at least one of an identity or a location of a welding power source within the welding environment, and an activation status indicating an activation of the welding power source. The server computer is configured to match the welding power source to a human operator using the welding helmet based on at least the first data and the second data.

Abstract: Methods and apparatus to communicate via a welding arc are disclosed. An example welding-type power supply includes a power converter, a weld monitor, and an arc modulator. The power converter outputs welding power to sustain a welding-type arc at a welding-type torch. The weld monitor monitors one or more aspects of a weld performed using the welding-type arc and the welding-type torch, and selects an audio message based on the one or more aspects. The arc modulator configured to modify the welding-type arc to output the selected audio message as a plasma speaker.

Abstract: Various systems and methods are provided that allow a weld sequencer to use a statistical analysis of generated reports to automatically determine weld parameter limits for the welds defined by various functions in a sequence file. For example, the weld sequencer can take reports generated for a specific type of part and statistically analyze the weld data included in the reports according to a set of analysis parameters provided by a user. The weld sequencer can use the statistical analysis to identify and remove outlier data and define a set of weld parameter limits based on the remaining data. The weld parameter limits can define a low limit and/or a high limit for one or more weld parameters associated with a function. The weld sequencer can then update the sequence file to include the weld parameter limits.

Abstract: Methods for welding a particle-matrix composite body to another body and repairing particle-matrix composite bodies are disclosed. Additionally, earth-boring tools having a joint that includes an overlapping root portion and a weld groove having a face portion with a first bevel portion and a second bevel portion are disclosed. In some embodiments, a particle-matrix bit body of an earth-boring tool may be repaired by removing a damaged portion, heating the particle-matrix composite bit body, and forming a built-up metallic structure thereon. In other embodiments, a particle-matrix composite body may be welded to a metallic body by forming a joint, heating the particle-matrix composite body, melting a metallic filler material forming a weld bead and cooling the welded particle-matrix composite body, metallic filler material and metallic body at a controlled rate.

Abstract: A retrofit module includes at least one of a current sensing component that has a first circuit or a voltage sensing component that has a second circuit. The current sensing component and the voltage sensing component may be disposed in a torch head of a welding or plasma cutting torch. The current sensing component is configured to measure a welding or plasma cutting current of the torch head, and the voltage sensing component is configured to measure a welding or plasma cutting voltage of the torch head.

Abstract: There is provided an arc welding control method of feeding a welding wire according to a push-pull feeding control using a push-side feeding motor which rotates in a forward feeding direction at a feeding rate set to a push feeding-rate setting value and a pull-side feeding motor which alternates a forward feeding rotation and a reverse feeding rotation periodically, and generating short-circuiting periods and arc periods to perform welding. An average feeding rate of the pull-side feeding motor is detected. The push feeding-rate setting value is corrected to the detected average feeding rate of the pull-side feeding motor.

Abstract: A direct resistance heating method includes placing a first electrode and a second electrode such that a space is provided between the first electrode and the second electrode and such that each of the first electrode and the second electrode extends across a heating target region of a workpiece, moving at least one of the first electrode and the second electrode with an electric current being applied between the first electrode and the second electrode, and adjusting a time during which the electric current is applied for each segment region of the heating target region, the segment regions being defined by dividing the heating target region and are arranged side by side along a direction in which the at least one of the first electrode and the second electrode is moved.

Abstract: There is provided an arc welding control method of alternating feeding of a welding wire between forward feeding and reverse feeding periodically according to a feeding rate pattern constituted of a forward feeding amplitude, a reverse feeding amplitude, a forward feeding period and a reverse feeding period, stored in correspondence to an average feeding rate setting value, and generating short-circuiting periods and arc periods to perform welding. An average feeding rate of the welding wire is detected, and at least one of the forward feeding amplitude, the reverse feeding amplitude, the forward feeding period or the reverse feeding period is changed so that the detected average feeding rate equals the average feeding rate setting value, thereby automatically correcting the feeding rate pattern.

Abstract: The present invention provides a system and a method for real time monitoring and identifying defects occurring in a three dimensional object build via an additive manufacturing process. Further, the present invention provides in-situ correction of such defects by a plurality of functional tool heads possessing freedom of motion in arbitrary planes and approach, where the functional tool heads are automatically and independently controlled based on a feedback analysis from the printing process, implementing analyzing techniques. Furthermore, the present invention provides a mechanism for analyzing defected data collected from detection devices and correcting tool path instructions and object model in-situ during construction of a 3D object. A build report is also generated that displays, in 3D space, the structural geometry and inherent properties of a final build object along with the features of corrected and uncorrected defects.