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US 4,277,868 AGranted
Machine and method for single pass taper milling
AssigneeThe Boeing Company
InventorsDoyle W. Huber, Richard H. Smith, Robert L. Strong
Life of this patent
Estimating the term…
Abstract
A strip of metal under tension is driven over an anvil wheel where the strip is contoured by a milling cutter. The moving strip is punched to provide an indexing hole. The milling cutter is programed to advance toward or to retract from the anvil wheel based upon the linear travel of the metal strip, and the punch is activated based upon the linear travel of the strip.
Claims9
An apparatus for single pass taper milling of a metal strip comprising:
- an anvil wheel, means for driving a metal strip under tension over the anvil wheel, a milling cutter mounted for radial movement with respect to the anvil wheel, and means for controlling radial movement of the milling cutter based on linear movement of the metal strip to contour mill the strip as it passes over the anvil wheel.
An apparatus for single pass taper milling of a metal strip comprising:
- an anvil wheel, a drive roll located downstream to pull a metal strip over the anvil wheel, pressure means for holding the metal strip against the drive roll, a retard roll located upstream from the anvil wheel to keep the metal strip under tension as it passes on an X-axis over the anvil wheel, pressure means for holding the metal strip against the retard roll, a milling head movable along a Y-axis and having a cutting tool located to mill the strip as it passes over the anvil wheel, and means for controlling Y-axis movement of the milling head based on the X-axis travel of the strip to contour the strip as it advances through the apparatus.
Dependencies are inferred from the claim text.