Hypertherm, Inc.

Kenneth J Woods

Charles Marcou Hackett

Zhipeng Lu

William J Connally

Robert C Dean, Jr

Sanjay Garg

Nicholas A Sanders

Aaron D Brandt

John Sobr

Yong Yang

David Jonathan Cook

Brian J Currier

Tate S Picard

Joe Ciambra

Richard W Couch

Yutaka Nakano

Richard W Couch, Jr

Roger E Young, Jr

Davide Orlandi

Marco Celeghin

Charles M Hackett

A double nozzle for a laser processing head includes an inner body portion having an interior surface defining a bore for passing a laser beam, a first interface surface near a distal end of the inner body portion, the first interface surface including a plurality of channels, and an exterior surface near a proximal end of the inner body portion and shaped to engage the laser processing head. Each channel includes interior and exterior linear edges in a cross-section that passes though a central longitudinal axis of the double nozzle. The double nozzle also includes an outer body portion connected to the inner body portion. The outer body portion defines a jet surface, which together with the plurality of channels defines a corresponding plurality of auxiliary fluid flow paths about the bore and between the inner body portion and the outer body portion.

Highly positioned laser processing nozzle

A double nozzle for a laser processing head includes an inner body portion having an interior surface defining a first bore, and an exterior surface, the bore aligned with a central longitudinal axis of the body. The double nozzle includes an outer body portion having an interior surface defining a second bore that is substantially aligned to the longitudinal axis. The outer body portion is matingly engaged with a region of the exterior surface of the inner body portion. The region between the exterior surface of the inner body portion and the interior surface of the outer body portion defines at least six coaxial fluid flow paths through an interior annular flow volume of the double nozzle. Each fluid flow path is defined at least in part by a corresponding feature formed in at least one of the inner body portion or the outer body portion.

Systems and methods are provided for adjusting a laser beam applied to a workpiece in a processing operation. A laser processing system receives the laser beam that is associated with a beam quality property. The laser processing system adjusts the laser beam to change the beam quality property based on a characteristic of the workpiece, a characteristic of the processing operation, or a combination thereof. The adjusted laser beam can also be delivered to the workpiece.

Optimization and control of beam quality for material processing

A method for monitoring the processing of a workpiece includes directing an incident laser beam onto the workpiece and measuring a signal emitted from the workpiece. At least two signals are generated by a detector based upon the emitted signal. A workpiece processing quality is determined based upon the ratio of the two output signals and a magnitude of one of the two outputs.

Process monitor for laser and plasma materials processing of materials

Apparatus, systems, and methods for monitoring the processing of a workpiece that includes directing an incident laser beam onto the workpiece and using an optical detector for measuring a signal emitted from the workpiece as a result of the incident laser beam. The detector generates at least two signals based upon the optical signal. The method also involves use of a light source monitor in determining workpiece processing quality based upon the quotient of the two outputs as well as a magnitude of one of the two quotients.

Centralized control architecture for a laser materials processing system

A metal jet cutting system, which includes a jetting heat, a heater and a power source, is used for modifying a workpiece. The jetting head includes a crucible and an inlet for receiving a feed stock of a conductive material. The heater melts the conductive material in the crucible to provide a conductive fluid, which exits the jetting head via an outlet. The power source, which is in electrical communication with the conductive fluid, increases the temperature of the conductive fluid. The conductive fluid is applied to the workpiece to modify the workpiece.

Process and apparatus for cutting or welding a workpiece

A configurable baffle to configure fluid flow through a nozzle. To improve the quality and accuracy of processing apparatus used in the cutting, welding, and heat treating of materials, a self-aligning nozzle includes a configurable baffle. This configurable baffle can be a metallic grid (e.g., a screen) or other type of membrane (e.g., porous, permeable, etc.). During its initial use in the processing apparatus, this configurable baffle is tailored with an energy beam, such as a laser beam or plasma jet, to create an optimal fluid flow velocity profile. When the configurable baffle deteriorates from use, it is easily replaced by another baffle or by using an in situ replacement mechanism. To ensure proper alignment between the nozzle and the energy beam, mating contoured surfaces are used among adjacent components. Threaded surfaces can also be employed to assist in achieving the proper coaxial alignment.

Configurable nozzle baffle apparatus and method

An output structure for material processing apparatus facilitates field replacement of consumable components, while maintaining important alignments. Contoured surfaces within the output structure mate with corresponding contoured surfaces on the consumable components, thereby facilitating alignment of the consumable components with an axis of the output structure. Material processing apparatus employing such surfaces include lasers and plasma arc torches and, with proper alignment, apparatus performance is improved. Typical consumable components include electrodes, swirl rings, nozzles, and shields. The consumable components can be axially translatable with respect to each other, thereby promoting contact starting of a plasma arc torch. An installation tool for consumable components also serves to align the components with an axis of the output structure.

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Lebanon, NH, United States of America

Kenneth J Woods