Hanover, NH, United States
Hanover, NH, United States

Hypertherm is a American corporation which designs and manufactures advanced cutting systems such as plasma cutting machinery and related high-technology industrial applications for specific use in a wide variety of industries such as shipbuilding, manufacturing, and automotive repair. It also develops and produces man-portable handheld and mechanized plasma cutters, fiber lasers, and waterjet cutting systems, along with consumables, CNC motion and height controls, and nesting and process optimization software. The company employs around 1,400 people: approximately 1,100 people at its main headquarters in New Hampshire, and another 300 throughout its international offices in Europe, Asia, and Latin America. Wikipedia.


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In some aspects, methods for preserving a usable life of a plasma arc electrode consumable installed in a plasma arc torch can include measuring a characteristic of an electrical signal being provided to the torch to generate a plasma arc between the torch and a workpiece to be processed; monitoring the characteristic during operation of the torch over a time period; comparing the characteristic to a threshold value; and, responsive to determining that a measured characteristic meets and/or exceeds the threshold value, initiating an arc extinguishing sequence to preserve the life of the electrode.


The invention features a seal assembly (300) for a high pressure liquid system. The seal assembly includes a seal carrier (304) having a base portion (305) defining a proximal end, a distal end (306), and a bore (310). The seal carrier (304) also includes a seal (308) disposed within the bore (310) of the seal carrier. The seal carrier (304) also includes a backup ring (312) disposed within the bore (310) of the seal carrier. The seal carrier (304) also includes a hoop ring (316) disposed substantially between the seal (308) and the backup ring (312), the hoop ring (316) having a proximal surface (317) and an outer surface (318).


In some aspects, plasma torch cutting systems can include a housing and a plasma torch power supply within the housing and configured to generate a signal that initiates generation of a plasma arc in a torch head, the power supply including an integrated circuit comprising a plurality of electronic components used to generate the signal that initiates generation of the plasma arc, at least one of the electronic components being at least partially formed of a wide bandgap semiconductor material.


Patent
Hypertherm | Date: 2016-12-21

A coolant tube for a plasma arc torch is provided. The coolant tube includes an elongated coolant tube body including a distal portion configured to engage an electrode and a proximal portion configured to engage a body of the plasma arc torch. The coolant tube also includes a first electrically conductive element coupled to the distal portion of the elongated coolant tube body. The first electrically conductive element is configured to physically contact an electrode. The coolant tube further includes a second electrically conductive element coupled to the proximal portion of the elongated coolant tube body. The second electrically conductive element is configured to physically contact the body of the plasma arc torch. The elongated coolant tube body defines a current path and a fluid path between the body of the plasma arc torch and the electrode.


Patent
Hypertherm | Date: 2016-11-14

A consumable set is provided that is usable in a plasma arc torch to direct a plasma arc to a processing surface of a workpiece. The consumable set comprises a nozzle and an alignment surface. The nozzle includes: 1) a nozzle body defining a longitudinal axis extending therethrough, and 2) a nozzle exit orifice disposed in the nozzle body for constricting the plasma arc. The nozzle exit orifice defines an exit orifice axis oriented at a non-zero bevel angle relative to the longitudinal axis. The alignment surface is generally parallel to the exit orifice axis and dimensioned to align the exit orifice such that the plasma arc impinges orthogonally on the processing surface of the workpiece. The alignment surface is configured to lay at least substantially flush against a guiding surface angled relative to the processing surface of the workpiece.


Patent
Hypertherm | Date: 2016-06-03

Systems and methods can be provided to use an automated cutting system to identify an edge or multiple edges of a workpiece. An automated cutting system receives trace data for a test path to be traced over a workpiece. The automated cutting system includes a torch from which gas is flowed. The torch is controlled in accordance with the trace data to trace the test path over the workpiece. A set of back pressure values are obtained by monitoring a back pressure of the gas during the tracing of the path. The back pressure values are mapped to a set of coordinates. An edge of the workpiece is identified using the set of back pressure values and the set of coordinates.


In some aspects, nozzles for a plasma arc torch can include a first body having a first end, a second end, and a longitudinal axis; and a second body disposed about a portion of the first body to complement the first body, the second body defining a set of channels formed on an internal surface shaped to form a set of liquid flow passages between the first body and the second body, the second body at least partially defining at least one inlet and at least one outlet to the set of liquid flow passages.


A plasma arc torch is provided for use in a plasma cutting system. The plasma arc torch includes a torch body for conducting electrical current. The torch body includes a torch tip configured to pass the electrical current to at least one consumable component connected to the tip. The plasma arc torch also includes at least one antenna positioned relative to the torch tip. The antenna is used to wirelessly detect the presence of the at least one consumable component. The plasma arc torch further includes a detection circuit configured to permit passing of the electrical current from the torch tip to the at least one consumable component based on at least the wireless detection.


Patent
Hypertherm | Date: 2016-02-12

A consumable cartridge for a plasma arc torch is provided. The consumable cartridge includes an outer component defining a substantially hollow body, an inner component disposed substantially within the hollow body of the outer component, and a hollow region between the rear portion of the inner component and the outer component. The inner component includes a forward portion configured to axially secure and rotatatably engage the outer component to the inner component and a rear portion substantially suspended within the hollow body of the outer component. The rear portion is axially secured and rotatably engaged with the outer component via the forward portion. The hollow region is configured to receive a torch head to enable mating between the rear portion of the inner component and a cathode of the torch head.


Patent
Hypertherm | Date: 2016-02-12

A crown for a plasma arc torch is provided. The crown includes a body defining a proximal and a distal end. The body includes an electrically conductive material. The crown also includes at least one raised feature at the proximal end of the body. The raised feature is adapted to activate a consumable sensor inside of the plasma arc torch. The crown further includes a biasing surface at the proximal end of the body for physically contacting a resilient element.

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