Patents by Inventor William E. Barkman
William E. Barkman has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9389058Abstract: Systems and methods for performing on-machine measurements and automatic part alignment, including: a measurement component operable for determining the position of a part on a machine; and an actuation component operable for adjusting the position of the part by contacting the part with a predetermined force responsive to the determined position of the part. The measurement component consists of a transducer. The actuation component consists of a linear actuator. Optionally, the measurement component and the actuation component consist of a single linear actuator operable for contacting the part with a first lighter force for determining the position of the part and with a second harder force for adjusting the position of the part. The actuation component is utilized in a substantially horizontal configuration and the effects of gravitational drop of the part are accounted for in the force applied and the timing of the contact.Type: GrantFiled: January 21, 2013Date of Patent: July 12, 2016Assignee: Consolidated Nuclear Security, LLCInventors: William E. Barkman, Thomas A. Dow, Kenneth P. Garrard, Zachary Marston
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Publication number: 20140202018Abstract: Systems and methods for performing on-machine measurements and automatic part alignment, including: a measurement component operable for determining the position of a part on a machine; and an actuation component operable for adjusting the position of the part by contacting the part with a predetermined force responsive to the determined position of the part. The measurement component consists of a transducer. The actuation component consists of a linear actuator. Optionally, the measurement component and the actuation component consist of a single linear actuator operable for contacting the part with a first lighter force for determining the position of the part and with a second harder force for adjusting the position of the part. The actuation component is utilized in a substantially horizontal configuration and the effects of gravitational drop of the part are accounted for in the force applied and the timing of the contact.Type: ApplicationFiled: January 21, 2013Publication date: July 24, 2014Inventors: William E. BARKMAN, Thomas A. DOW, Kenneth P. GARRARD, Zachary MARSTON
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Patent number: 8610393Abstract: Disclosed are various systems and methods for assessing and improving the capability of a machine tool. The disclosure applies to machine tools having at least one slide configured to move along a motion axis. Various patterns of dynamic excitation commands are employed to drive the one or more slides, typically involving repetitive short distance displacements. A quantification of a measurable merit of machine tool response to the one or more patterns of dynamic excitation commands is typically derived for the machine tool. Examples of measurable merits of machine tool performance include dynamic one axis positional accuracy of the machine tool, dynamic cross-axis stability of the machine tool, and dynamic multi-axis positional accuracy of the machine tool.Type: GrantFiled: April 14, 2010Date of Patent: December 17, 2013Assignee: Babcock & Wilcox Technical Services Y-12, LLCInventors: William E. Barkman, Edwin F. Babelay, Jr.
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Patent number: 8432119Abstract: Disclosed are various systems and methods for assessing and improving the capability of a machine tool. The disclosure applies to machine tools having at least one slide configured to move along a motion axis. Various patterns of dynamic excitation commands are employed to drive the one or more slides, typically involving repetitive short distance displacements. A quantification of a measurable merit of machine tool response to the one or more patterns of dynamic excitation commands is typically derived for the machine tool. Examples of measurable merits of machine tool performance include workpiece surface finish, and the ability to generate chips of the desired length.Type: GrantFiled: April 14, 2010Date of Patent: April 30, 2013Assignee: Babcock & Wilcox Technical Services Y-12, LLCInventors: William E. Barkman, Edwin F. Babelay, Jr., Kevin Scott Smith, Thomas S. Assaid, Justin T. McFarland, David A. Tursky, Bethany Woody, David Adams
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Patent number: 8240234Abstract: The present invention provides methods and systems for chip breaking, controlling cutting tool wear, and the like in turning, boring, and other applications, including: engaging a workpiece with a cutting tool in a feed direction along a toolpath, superimposing an oscillation in the feed direction on the toolpath, and dynamically or non-dynamically varying the oscillation superimposed in the feed direction on the toolpath such that interrupted cuts and chips of a predetermined length or less are produced. These systems take full advantage of computer numerical control (CNC) methodologies.Type: GrantFiled: October 14, 2008Date of Patent: August 14, 2012Assignees: University of North Carolina at Charlotte, Babcock & Wilcox Technical Services Y-12, LLCInventors: Bethany A. Woody, Kevin Scott Smith, David J. Adams, William E. Barkman, Edwin F. Babelay, Jr.
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Publication number: 20110254495Abstract: Disclosed are various systems and methods for assessing and improving the capability of a machine tool. The disclosure applies to machine tools having at least one slide configured to move along a motion axis. Various patterns of dynamic excitation commands are employed to drive the one or more slides, typically involving repetitive short distance displacements. A quantification of a measurable merit of machine tool response to the one or more patterns of dynamic excitation commands is typically derived for the machine tool. Examples of measurable merits of machine tool performance include dynamic one axis positional accuracy of the machine tool, dynamic cross-axis stability of the machine tool, and dynamic multi-axis positional accuracy of the machine tool.Type: ApplicationFiled: April 14, 2010Publication date: October 20, 2011Applicant: BABCOCK & WILCOX TECHNICAL SERVICES Y-12, LLCInventors: William E. Barkman, Edwin F. Babelay, JR.
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Publication number: 20110254496Abstract: Disclosed are various systems and methods for assessing and improving the capability of a machine tool. The disclosure applies to machine tools having at least one slide configured to move along a motion axis. Various patterns of dynamic excitation commands are employed to drive the one or more slides, typically involving repetitive short distance displacements. A quantification of a measurable merit of machine tool response to the one or more patterns of dynamic excitation commands is typically derived for the machine tool. Examples of measurable merits of machine tool performance include workpiece surface finish, and the ability to generate chips of the desired length.Type: ApplicationFiled: April 14, 2010Publication date: October 20, 2011Applicants: THE UNIVERSITY OF NORTH CAROLINA AT CHARLOTTE, BABCOCK & WILCOX TECHNICAL SERVICES Y-12, LLCInventors: William E. Barkman, Edwin F. Babelay, JR., Kevin Scott Smith, Thomas S. Assaid, Justin T. McFarland, David A. Tursky
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Publication number: 20090107308Abstract: The present invention provides methods and systems for chip breaking, controlling cutting tool wear, and the like in turning, boring, and other applications, including: engaging a workpiece with a cutting tool in a feed direction along a toolpath, superimposing an oscillation in the feed direction on the toolpath, and dynamically or non-dynamically varying the oscillation superimposed in the feed direction on the toolpath such that interrupted cuts and chips of a predetermined length or less are produced. These systems take full advantage of computer numerical control (CNC) methodologies.Type: ApplicationFiled: October 14, 2008Publication date: April 30, 2009Inventors: Bethany A. Woody, Kevin Scott Smith, David J. Adams, William E. Barkman, Edwin F. Babelay, JR.
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Patent number: 5387061Abstract: A compensation system for a computer-controlled machining apparatus having a controller and including a cutting tool and a workpiece holder which are movable relative to one another along preprogrammed path during a machining operation utilizes sensors for gathering information at a preselected stage of a machining operation relating to an actual condition. The controller compares the actual condition to a condition which the program presumes to exist at the preselected stage and alters the program in accordance with detected variations between the actual condition and the assumed condition. Such conditions may be related to process parameters, such as a position, dimension or shape of the cutting tool or workpiece or an environmental temperature associated with the machining operation, and such sensors may be a contact or a non-contact type of sensor or a temperature transducer.Type: GrantFiled: September 24, 1992Date of Patent: February 7, 1995Assignee: The United States of America as represented by the United States Department of EnergyInventors: William E. Barkman, Edwin F. Babelay, Paul D. DeMint, Thomas L. Hebble, Richard E. Igou, Richard R. Williams, Edward J. Klages, William H. Rasnick
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Patent number: 5255199Abstract: A compensation system for a computer-controlled machining apparatus having a controller and including a cutting tool and a workpiece holder which are movable relative to one another along a preprogrammed path during a machining operation utilizes a camera and a vision computer for gathering information at a preselected stage of a machining operation relating to the actual shape and size of the cutting edge of the cutting tool and for altering the preprogrammed path in accordance with detected variations between the actual size and shape of the cutting edge and an assumed size and shape of the cutting edge. The camera obtains an image of the cutting tool against a background so that the cutting tool and background possess contrasting light intensities, and the vision computer utilizes the contrasting light intensities of the image to locate points therein which correspond to points along the actual cutting edge.Type: GrantFiled: December 14, 1990Date of Patent: October 19, 1993Assignee: Martin Marietta Energy Systems, Inc.Inventors: William E. Barkman, Edwin F. Babelay, Jr., Edward J. Klages
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Patent number: 4221995Abstract: A precision numerical controlled servo-positioning system is provided for continuous closed-loop position control of a machine slide or platform driven by a linear-induction motor. The system utilizes filtered velocity feedback to provide system stability required to operate with a system gain of 100 inches/minute/0.001 inch of following error. The filtered velocity feedback signal is derived from the position output signals of a laser interferometer utilized to monitor the movement of the slide. Air-bearing slides mounted to a stable support are utilized to minimize friction and small irregularities in the slideway which would tend to introduce positioning errors. A microprocessor is programmed to read command and feedback information and converts this information into the system following error signal. This error signal is summed with the negative filtered velocity feedback signal at the input of a servo amplifier whose output serves as the drive power signal to the linear motor position control coil.Type: GrantFiled: July 24, 1978Date of Patent: September 9, 1980Assignee: The United States of America as represented by the United States Department of EnergyInventor: William E. Barkman