M4 Sciences LLC

Purdue Research Foundation

Yang Guo

James Bradley Mann

Seong Eyl Lee

Srinivasan Chandrasekar

Walter Dale Compton

Christopher Javellana Saldana

A tool holder is provided for holding one of a tool and workpiece. The tool holder is configured for mounting to a driving member of a machining device. The tool holder includes a tool holder first end including a coupler for coupling the tool holder to the driving member of the machining device. A tool holder second end includes a clamp for releasably holding one of the tool and workpiece. A force sensor is disposed between the clamp and the coupler for sensing force exerted on the one of the tool and workpiece held by the clamp. A linear actuator is disposed between the clamp and the force sensor for linearly moving the one of the tool and workpiece.

Tool holder assembly for machining system

A modulating tool holder includes a tool holder first end and a tool holder second end, and a central axis extending between the tool holder first end and the tool holder second end. The tool holder first end has a coupler for coupling the tool holder to a drive member of a machining device and the second end includes a clamp for releasably holding either a tool or a workpiece. A rotatable spindle member extends axially in the tool holder and imparts a rotational movement to the clamp. A central fluid passageway extends between first and second ends of the rotatable spindle member for conveying a fluid. A linear actuator is configured to impart an oscillating movement to the clamp. The linear actuator is functionally decoupled from the torsional load of the rotatable spindle member.

Machining system spindle for modulation-assisted machining

Methods suitable for producing textured surfaces in surfaces of objects, by which the methods are able to achieve a desired three-dimensional surface topography and optionally a desired subsurface microstructure through the use of a controlled modulation machining technique. The methods include selecting a predetermined surface texture for a surface of a body, and then imposing a superimposed sinusoidal feed-modulation on a cutting tool so as to move the cutting tool in a feed direction relative to the body while machining the body with the cutting tool and generating a machined surface of the body. The surface texture of the machined surface is intentionally controlled by at least the modulation amplitude and the modulation frequency of the superimposed sinusoidal feed-modulation.

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West Lafayette, IN, United States of America

Yang Guo