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Patent US4277868A successfully refreshed from Google Patents.
US4277868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine and method for single pass taper milling
Assignee: Boeing Co
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Filing: 1979-04-30
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Granted: 1981-07-14
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Expires: 1999-04-30
Abstract
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.
Inventors
- 👤 Doyle W. Huber
- 👤 Richard H. Smith
- 👤 Robert L. Strong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:39
CPC Classifications
B; B23; B23Q; B23Q3/00; B23Q3/02; B23Q3/06; B23Q3/08; B21; B21D; B21D28/00; B21D28/24; B21D28/26; B23Q3/069; B23Q7/00; B23Q7/14; B23Q7/141; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5197; Y10T29/5198; Y10T409/00; Y10T409/30; Y10T409/304536; Y10T409/305208; Y10T83/00; Y10T83/465; Y10T83/4766; Y10T83/4783; Y10T83/4786
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
70 words
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.
Claim 2
Independent Claim
70 words
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.
Claim 3
Dependent Claim
27 words
An apparatus for single pass taper milling of a metal strip as in claim 1 further comprising means for punching a hole in the moving metal strip.
Claim 4
Dependent Claim
38 words
An apparatus for single pass taper milling of a metal strip as in claim 1 further comprising means for providing additional hold down of the metal strip against the anvil wheel at a location adjacent the milling cutter.
Claim 5
Dependent Claim
27 words
An apparatus for single pass taper milling of a metal strip as in claim 3 further comprising means for punching a hole in the moving metal strip.
Claim 6
Independent Claim
129 words
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.
Claim 7
Independent Claim
129 words
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.
Claim 8
Dependent Claim
44 words
An apparatus for single pass taper milling of a metal strip as in claim 5 further comprising: means for punching at least one indexing hole in the moving metal strip, and means for controlling punch timing based on the X-axis travel of the strip.
Claim 9
Dependent Claim
31 words
An apparatus for single pass taper milling of a metal strip as in claim 5 further comprising: means for providing additional hold down of the metal strip adjacent the cutting tool.
Claim 10
Dependent Claim
49 words
An apparatus for single pass taper milling of a metal strip as in claim 5 further comprising having the drive roll diameter larger than the diameter of the retard roll, a common shaft for driving both rolls and a magnetic clutch on the drive shaft between the two rolls.
Claim 11
Dependent Claim
74 words
An apparatus for single pass taper milling of a metal strip as in claim 6 wherein the means for punching index holes comprises a driven punch block with metal dies rotatably mounted to a four bar linkage, a slider block with female dies, means for moving the slider block to permit and to assist rotation of the punch block, and means for moving the punch block and the slider block to the start position.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-07-13 | 1985-01-12 | 1985-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-13 | 1989-01-12 | 1989-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-13 | 1993-01-12 | 1993-07-14 | $7700.00 | Window Closed / Lapsed |