Dennis Lamar Mathis

US Patent:

8167518, May 1, 2012

Filed:

Apr 11, 2008

Appl. No.:

12/101619

Inventors:

Dennis Mathis - Saint Peters MO, US
Mike Matlack - Saint Charles MO, US
Scott Anthony Martin - Swansea IL, US
David L. Fritsche - Foristell MO, US

Assignee:

The Boeing Company - Chicago IL

International Classification:

B23B 47/18
B23B 35/00

US Classification:

408 1R, 408138, 408141, 408702

Abstract:

A method and apparatus for a power feed drill. The power feed drill comprises a servo motor, a roller screw, a ball spline shaft, an air motor, and a collet chuck. The roller screw is rotatably mounted to the servo motor. The ball spline shaft has a first end connected to the roller screw, wherein rotation of the roller screw in a first direction moves the ball spline shaft in the first direction and wherein rotation of the roller screw in a second direction moves the ball spline shaft in an opposite direction to the first direction along an axis. The air motor is capable of transmitting rotation motion to the ball spline shaft to rotate around the axis. The collet chuck is fixably attached to a second end of the ball spline shaft, wherein the collet chuck is adapted to receive a tool.

US Patent:

20150078845, Mar 19, 2015

Filed:

Nov 23, 2014

Appl. No.:

14/551073

Inventors:

- Chicago IL, US
Dennis R. Mathis - Saint Peters MO, US
Richard J. Steckel - Washington MO, US

International Classification:

B23Q 17/24
B23B 49/00

US Classification:

408 13, 408 8

Abstract:

The different advantageous embodiments may provide an apparatus comprising a vision system, a drilling tool, and a system controller. The vision system may be configured to generate data about a number of laser signatures on a surface of a workpiece. The drilling tool may be configured to drill a number of holes in the surface of the workpiece. The system controller may be configured to generate drilling instructions for the drilling tool using the data generated by the vision system.

US Patent:

20090269153, Oct 29, 2009

Filed:

Apr 25, 2008

Appl. No.:

12/109593

Inventors:

Isaac C. Schevers - Festus MO, US
Dennis R. Mathis - St. Peters MO, US
David L. Fritsche - Foristell MO, US

International Classification:

B23B 47/22

US Classification:

408130

Abstract:

A servo drill spindle includes a spindle body, an air motor slidably carried by the spindle body, a spindle extension drivingly engaged by the air motor, a cutting tool drivingly engaged by the spindle extension and a servo motor engaging the air motor and operable to advance the air motor along the spindle body.

US Patent:

20080232913, Sep 25, 2008

Filed:

Mar 23, 2007

Appl. No.:

11/690783

Inventors:

Dennis R. Mathis - St. Peters MO, US

Assignee:

THE BOEING COMPANY - Chicago IL

International Classification:

B23B 47/00

US Classification:

408 97

Abstract:

Methods and systems for concentric clamping for manufacturing assemblies are disclosed. In one embodiment, a drilling assembly includes a spindle assembly configured to perform a drilling operation at a drilling location on a workpiece, and a clamping assembly having an actuator concentrically disposed about the spindle assembly. A nosepiece is coupled to the actuator and is configured to apply a clamping force concentrically about the drilling location on the workpiece. The actuator may include an inner housing having an outwardly extending flange, and an outer housing disposed about the flange of the inner housing. Pressurization of a first chamber moves the inner housing forwardly and applies the clamping force of the nosepiece against the workpiece, and pressurization of a second chamber moves the inner housing aftwardly and retracts the nosepiece away from the workpiece.

US Patent:

20080232914, Sep 25, 2008

Filed:

Mar 23, 2007

Appl. No.:

11/690793

Inventors:

Dennis R. Mathis - St. Peters MO, US

Assignee:

THE BOEING COMPANY - Chicago IL

International Classification:

B23B 39/10

US Classification:

408130

Abstract:

Spindle assemblies with inline direct drive feed are disclosed. In one embodiment, a manufacturing system includes a support structure configured to be positioned proximate a workpiece, a carriage moveably coupled to the support structure, and a head assembly coupled to the carriage. The head assembly includes a spindle assembly, comprising a feed unit and a spindle unit. The feed unit includes a feed motor coupled to a drive mechanism, the feed motor and the drive mechanism being disposed along a longitudinal axis of the spindle assembly. The spindle unit has an aft end operatively coupled to the drive mechanism of the feed unit, the spindle unit including a fluid-driven motor coupled to a tool collet chuck, the spindle unit being configured to translate along the longitudinal axis by actuation of the feed motor.