Arc welding equipment for joining the objects at high speed and for reducing the strain of the objects after being joined is provided. The nozzle housing an electrode forming arc plasma is formed from a gas supply part and a gas suction part. The gas supply part has gas supply holes supplying gas outward in a radial direction of the arc plasma. The gas suction part suctions the gas supplied form the gas supply part. A pair of the gas supply holes, which are disposed so that the electrode is disposed therebetween, supply the gas of a first pressure to a position away from the electrode by a first distance. A pair of the gas supply holes, which are disposed so that the electrode is disposed therebetween other than the pair of the gas supply holes, supply the gas of a second pressure to a position away from the electrode by a second distance. The second distance is longer than the first distance. The gas of the second pressure is lower than that of the first pressure. Thereby, the arc plasma is compressed in a direction connecting the gas supply holes, and the arc plasma becomes long in a direction connecting the gas supply holes.

Arc welding equipment for joining the objects at high speed and for reducing the strain of the objects after being joined is provided. The nozzle housing an electrode forming arc plasma is formed from a gas supply part and a gas suction part. The gas supply part has gas supply holes supplying gas outward in a radial direction of the arc plasma. The gas suction part suctions the gas supplied form the gas supply part. A pair of the gas supply holes, which are disposed so that the electrode is disposed therebetween, supply the gas of a first pressure to a position away from the electrode by a first distance. A pair of the gas supply holes, which are disposed so that the electrode is disposed therebetween other than the pair of the gas supply holes, supply the gas of a second pressure to a position away from the electrode by a second distance. The second distance is longer than the first distance. The gas of the second pressure is lower than that of the first pressure. Thereby, the arc plasma is compressed in a direction connecting the gas supply holes, and the arc plasma becomes long in a direction connecting the gas supply holes.

A wire feeder has a motor, mounting plate, intermediate mounting plate, and base assembly. The mounting plate has a plurality of mounting hole patterns and a shaft hole. The motor a mounting hole pattern that aligns with at least one of the plurality. One of a plurality of motor types can be mounted to the mounting plate. The mounting plate is mounted to the intermediate mounting plate, which is mounted to the base assembly. The base assembly includes a drive gear, which is connected to rotate with an insulating cap that receives a gear hub. The gear hub is connected to rotate with the motor shaft via matching keys. The insulating hub, intermediate mounting plate and mounting plate are electrically insulating, so that the base assembly is electrically isolated from the motor.

Systems, methods, and apparatus to preheat welding wire are disclosed. An example welding torch includes: a welding assembly comprising: a first contact tip configured to conduct welding current to a consumable electrode; and a second contact tip configured to conduct preheating current to the consumable electrode; a neck having a bend, the neck configured to hold the welding assembly and to deliver the consumable electrode to the welding assembly; a torch body configured to hold the neck opposite the welding assembly; and a torch mounting assembly; wherein the welding assembly, the neck, the bend, the torch body, and the torch mounting assembly are dimensioned such that the welding torch provides a same tool center point distance, a same bend angle, and a same approach angle when used to replace a second welding torch having a single contact tip.

Systems, methods, and apparatus to preheat weld wire are disclosed. An example welding torch includes a first contact tip configured to conduct welding current to a consumable electrode, a second contact tip configured to conduct preheating current to the consumable electrode, and a plurality of liquid cooling assemblies configured to conduct the preheating current and to conduct the welding current to the consumable electrode.

A drive assembly is provided for driving welding wire through a welding wire feeder. The drive assembly comprises an insulating base and a conductive base secured to one another. Both bases have features that allow for mounting in the wire feeder and for mounting various drive components. The conductive base is energized during operation, and the isolative base insulates the conductive base from components of the wire feeder enclosure. Features of the assembly improve operation and facilitate assembly.

A cutting system including a plasma arc torch having an electrode, nozzle, and a gas conduit through which gas is transferred to a torch tip. The torch includes at least one of a sensor and a set circuit, where the set circuit stores a parameter related to the torch. The system also includes a power supply outputting a cutting waveform to the electrode via an electrical connector to initiate a working arc. The working arc creates a plasma arc using the gas. The system further includes a controller that controls an output of the power supply and a feeding of the gas through the gas conduit based upon input from a user input device positioned on at least one of the torch and the power supply. The controller monitors at least one usage parameter. The system additionally includes a memory device that is coupled to the controller. The memory device stores data related to the at least one usage parameter.

A cutting system including a plasma arc torch having an electrode, nozzle, and a gas conduit through which gas is transferred to a torch tip. The torch includes at least one of a sensor and a set circuit, where the set circuit stores a parameter related to the torch. The system also includes a power supply outputting a cutting waveform to the electrode via an electrical connector to initiate a working arc. The working arc creates a plasma arc using the gas. The system further includes a controller that controls an output of the power supply and a feeding of the gas through the gas conduit based upon input from a user input device positioned on at least one of the torch and the power supply. The controller monitors at least one usage parameter. The system additionally includes a memory device that is coupled to the controller. The memory device stores data related to the at least one usage parameter.

A pressing unit presses a plurality of electrodes housed in a housing path in a housing case toward an electrode outlet port. When a lever member swings to one side, a distal end of the lever member comes to be in a first position in which the lever member covers a part of the electrode outlet port. When the lever member swings to the other side, the lever member comes to be in a second position in which the distal end exposes the electrode outlet port. A first coil spring is disposed between a proximal end of the lever member and a first side surface portion of the housing case, and biases the proximal end of the lever member to a direction away from the housing case.

A collision sensing system includes an outer housing with a ball roller mounted thereto, a piston, a lower housing, and an electro/mechanical switch assembly having a contact ring. The piston includes a helical groove on its exterior and a tongue extending from a lower end thereof. The ball roller is positioned within the helical groove of the piston. The lower housing has a semi-spherical portion and a groove aligned with the piston tongue. A contact pin assembly extends through the piston and includes a contact pin positioned to contact the contact ring. The collision sensing system is configured such that deflection of a welding torch mounted to the lower housing misaligns the tongue and groove, slides the helical groove along the ball roller, thereby lifting the piston and breaking contact between the contact pin and contact ring.