Method of and apparatus for machining structural shapes
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United States of America Patent
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Nov 29, 1994
Grant Date -
N/A
app pub date -
Sep 7, 1993
filing date -
Sep 22, 1992
priority date (Note) -
Expired
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Abstract
A boring apparatus provided with feed and discharge roller conveyors for drilling holes in heavy steel structural shapes can be constructed so that at least one boring unit is transformable into a milling unit, the computer being programmed with a milling program. The mechanism for advancing the workpiece used for boring is thus used also for displacing the workpiece during milling so that milling tables upon which the workpiece must be clamped and the like need not be provided. The system also avoids the need to move the massive workpieces between boring/milling units.
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