United Technologies Corporation

Rtx Corporation

Raytheon Technologies Corporation

Krzysztof Barnat

Tahany Ibrahim El-Wardany

Wendell V Twelves

Randy P Salva

Benjamin Bedard

Jesse R Boyer

Andrzej Ernest Kuczek

Glenn Levasseur

Susanne Marie Opalka

Michael A Klecka

Gordon Miller Reed

Raja Kountanya

Bernard D Vaillette

Allan B Packman

Ray-Sing Lin

Monica C Smith

Daniel Gynther

Caitlin Oswald

Frank C Mullett

Ronald A Talarico

Jr Wendell V Twelves

A system for deep rolling a fan blade including a shaft assembly disposed along a first axis; a hub connected to a distal end of the shaft assembly, the hub having an upper hub portion and a lower hub portion extending along a second axis, the second axis forming an angle relative to a first axis; a roller disk joined to the lower portion of the hub, the roller disk configured to contact a fan blade; a fixture supporting the fan blade; the fixture comprising a body supporting a pivot clamp attached to the body with a pivot; a support attached to the body, the support is configured to engage an airfoil portion of the fan blade; a receiver formed in the body for supporting a root of the fan blade; and a shoulder attached to the body configured to support a platform portion of the fan blade.

Surface treatment system design for high fatigue life hollow fan blades

A mechanical surface treatment method for a workpiece includes using a multi-axis powered machine to actuate a deep rolling tool having a roller relative to the workpiece. The actuating includes applying the roller against a workpiece surface with a normal force sufficient to plastically deform the workpiece and translating the roller relative to the workpiece surface. The method includes concurrently applying an electrical current to the workpiece surface in a manner that produces an electroplastic effect at the workpiece surface and a near surface region. The electroplastic effect and the plastic deformation produce a refinement in a grain structure at the workpiece surface and near surface region and an increase in dislocation sources and tangles within the grain structure.

Method for mechanical surface treatment using electro-pulse assisted deep rolling

A component includes an additively manufactured component with an internal passage; and an additively manufactured elongated member within the internal passage. A method of additively manufacturing a component including additively manufacturing a component with an internal passage; and additively manufacturing an elongated member within the internal passage concurrent with additively manufacturing the component.

Additive manufactured conglomerated powder removal from internal passages

A machining process includes providing a cutting tool having a rake face and a flank face; bringing the cutting tool into contact with a metal alloy work piece to form a chip by penetrating the cutting tool into the workpiece; and introducing a nanofluid into a vicinity of the penetration to remove heat and, in some instances, customize the finished surface. The nanofluid includes a mixture of a cryo-liquid and nanoparticles having a maximum size of approximately 0.1 nanometers to approximately 100 nanometers.

Cryogenic machining process using nanofluid

A damper includes a damper body that is configured to be attached to a workpiece during a machining process. A first side of the damper body is configured to abut a first side of the workpiece. The damper body includes a frame forming an outer periphery of the damper body, a plurality of damper nodes with a cavity in each damper node positioned in the frame, and a plurality of ribs extending between the frame and the damper nodes. A damping material is positioned in the cavity of each damper node.

Damper for machining processes

A method of manufacturing a turbine disk includes the steps of machining an initial slot using a cutting tool and machining intermediate and semi finished slot using a form tool that forms surfaces of the slot except for the bottom surface. A final finishing step utilizes a cutting tool that includes a shape that forms the bottom portion of the disk slot.

Method of machining a turbine disk slot

A method of manufacturing a turbine disk involves machining to an initial form a slot in a turbine disk using a firm cutting tool. An intermediate form is then machined using a second cutting tool different from the first cutting tool. A final form using a third cutting tool different from the first cutting tool and the second cutting tool is then machined.

Method of machining a turbine disk

A grind wheel includes a rim having at least one notch formed in the rim to grind a slot base of a blade retention slot within a rotor disk.

Notched grind wheel and method to manufacture a rotor blade retention slot

A system for forming a labyrinth seal on a turbine blade has a fixture with a plurality of nozzles for distributing a coolant, a first jaw set for clamping and holding a root portion of the turbine blade in a first orientation, which first jaw set is attached to the fixture and has two members for mating with said root portion of said turbine blade, each of the jaw set members respectively have ridges; and a plurality of grinding wheels for forming the labyrinth seal.

System for forming a labyrinth seal on a turbine blade

A method of grinding a slot base of a blade retention slot within a rotor disk includes rotationally aligning a grind wheel about an axis of rotation to align a first notch with a first and second opposed lobe of the blade retention slot of the rotor disk; transiting the grind wheel along the blade retention slot that the first notch is passed between a lobe width defined by the first and second opposed lobe of the blade retention slot; rotating the grind wheel about the axis of rotation; and transiting the rotating grind wheel along the blade retention slot to grind a slot base with a rim of the grind disk, the slot base having a width greater than the lobe width of the blade retention slot. A grind wheel includes a rim having at least one notch formed in the rim to grind a slot base of a blade retention slot within a rotor disk.

A coolant nozzle is used on a machine tool having a rotating bit of convoluted longitudinal profile for cutting a number of slots in a disk. The nozzle includes at least one coolant inlet and at least one coolant outlet. The coolant outlet has a convoluted section and is positioned to direct a coolant stream tangentially at the bit in a direction of rotation of the bit. Internal surface portions of the nozzle define one or more passageways between the inlet and the outlet(s).

Growing community of inventors

Berlin, CT, United States of America

Krzysztof Barnat