The Boeing Company

The Boeing Comapany

Herb Bommer

Kurt A Burton

Mike P Matlack

John A Baumann

A manufacturing apparatus is presented. The manufacturing apparatus comprises a tool support movable along multiple axes; a tool mounted on the tool support for performing a manufacturing operation on a workpiece; and an ancillary device releasably mounted on the tool support and used in conjunction with the tool, the ancillary device moveable along at least a first axis independent of the movement of the tool.

Independent axis ancillary device

A spindle head for performing friction stir welding includes concentric spindle shafts driven by stacked, coaxial motors contained within a spindle housing. The coaxial arrangement of the motors results in a more compact package. Each of the motors is concentrically arranged around one of the spindles by directly connecting a rotor of the motor to a spindle shaft. The stators of the motors are mounted on the housing and are concentrically arranged around the concentric spindle shafts.

Apparatus for friction stir welding using spindle-in-spindle

A method for performing operations on a workpiece. The method comprises the steps of: contacting the workpiece with a tool; moving the tool along any of multiple axes; moving a clamp along at least a first axis independent of the movement of the tool; and, clamping the workpiece using the clamp. Contacting the workpiece with the tool may comprise plunging a friction stir welding pin tool into the workpiece while the workpiece is being clamped. The tool may be moved by moving a spindle housing over the workpiece, and the clamp may be moved by rotating the clamp around the first axis as the spindle housing moves over the workpiece. The method may further comprise the step of coordinating the movement of the clamp with the movement of the tool.

Independent axis clamping apparatus and method

Method for friction stir welding using spindle-in-spindle

A process control system for a friction stir welding machine employs a master set of parameters and subroutines to control multiple machine processes, including welding, drilling, milling and probing. Sub-sets of the master set comprising command parameters, limits parameters and measurement parameters are used to control the operation of a weld tip, a clamping system and a motion head that cooperate under computer control to carry out the multiple processes.

Process control system for friction stir welding

Apparatus for performing operations on a workpiece includes a clamping assembly mounted on a tool support for movement along at least one axis independent of the axes along which the tool moves. The clamping assembly includes clamping devices for applying clamping pressure to the workpiece, and a rotary drive mounted on the tool support for rotating the clamping devices around the independent axis. The clamping devices include clamping packs having a clamping roller mounted on a pneumatically driven slide for applying a programmed amount of clamping pressure to the workpiece.

A portable multi-axis load confirmation tool having a rotating ball on the end thereof follows a three-dimensional weld program path therewith. The ball reacts to an internal load cell for verifying weld program path dynamics before an actual program is run with friction stir welding tools. The load cell is connected to instrumentation electronics converting a load cell signal to a digital readout and comparing the load cell signal to weld program load requirements. The tool integrates into a tool holder loaded on a friction stir welding spindle for simulating an actual friction stir welding tool.

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St. Peters, MO, United States of America

Herb Bommer