Purdue Research Foundation

M4 Sciences LLC

Christopher Javellana Saldana

James Bradley Mann

Srinivasan Chandrasekar

Walter Dale Compton

Wilfredo Moscoso

Kevin Paul Trumble

Dinakar Sagapuram

Yang Guo

Mert Efe

Processes by which bulk forms can be produced in a single continuous operation, as opposed to multi-stage deformation processes that involve a series of separate and discrete deformation operations or stages. Such processes generally entail deforming a solid body using a large-strain extrusion machining technique and deformation conditions that obtain a predetermined crystallographic texture in the continuous bulk form that differs from the crystallographic texture of the solid body.

Large strain extrusion machining processes and bulk forms produced therefrom

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.

Method of producing textured surfaces

A method is provided for controlling a machining operation wherein a tool performs a machining operation on a workpiece. The method includes providing a tool holder for holding a tool, a workpiece holder for holding a work piece, and a linear slide for linearly moving a linearly moving part that is either the tool or the workpiece. The step of selecting appropriate machining parameters includes the step of selecting an appropriate feed rate for the linear slide move the linear moving part and appropriate rotational speed is selected for the rotator to rotate the rotating part. The set of appropriate machining parameters are incorporated into the digital controller. The digital controller is then used to control the operation of a linear slide, rotator and modulator to execute the machining of the workpiece by the tool in accordance with a selected appropriate set of parameters.

Control systems and methods for machining operations

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Springfield, VA, United States of America

Christopher Javellana Saldana