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(1) Introduction
(2) Origins
DESCRIPTION
CATIA-V4
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ISOTROPIC 3D-WOVEN
BILLETS.
MANUFACTURE. This website describes (5) distinct isotropic, 3D-woven
constructs, billets actually, each having a square cross-section and
some certain length.
During manufacture, the billet emerges from the
weaving-apparatus as an entity having a constant, square
cross-section, and the entity continually grows in length. (In case
of the "IIO"- & "OOI"- types, it is the "odd" stack that
continually grows in length.)
The finished billet can be cut into smaller billets
and/or slabs, most efficiently by a CO2-laser.
All (5) constructs are manifestations of a
common "principle of construction", as described in "Generic
Description". Due to this
commonality, all (5) constructs are described, in the patent &
in this website, to suit 100% documentation.
The billets are composed as
isotropic, 3D-woven constructs; these constructs are tri-axially
("XYZ")-isotropic. This isotropy is best seen in the (5)
"'expanded-stacks' representations", shown
in "Colored
Illustrations". Due to this isotropy, these billets are fully
"self-interlocked" at all nodes, and thus they are fully
"self-integral" overall.
(5) "open style" models & (5)
"compact style" models, representing each of the (5) distinct
3D-woven constructs, are shown in
"Photographs Of
Models". Each of these models should be
seen as a trivial-sized but illustrative cut-out excised from
a (much) larger arbitrarily large parent-billet.
Of the (5) distinct 3D-woven constructs: (3)
-the "IIIR"-,"IIIL"- ,"IIO"- types- can be woven on one
weaving-apparatus & (2) -the "OOO"-,"OOI"- types- can be
woven on another weaving-apparatus. With interchangeability
among (2) alternate central modules (plus controls) & with a
common manner of adjustability among adjacent, surrounding
modules one weaving-apparatus could be made to weave all (5)
constructs. The weaving-apparatus
is amenable to (near) totally-automated operation, with
self-monitoring capabilities & feedback-driven
operational-sequencing, and is capable of continuous operation
with provisions for efficient old-billet removal/new-billet
startup. It is designed with: 1) space-saving of-spool
stock-loading & 2) time-saving dual
stock-loading. Explanation for
1): Stock emplaced along the
length of the billet being woven is deployed thru the
weaving-apparatus as a square array of elements, and the number of
such elements is "high", after all given that the billet has
("N")-elements per side, that array has ("N"-SQ'D.)-elements
total. (For mechanical reasons, "N" has to be a multiple of
(4).) That stock is best stored entirely of-spool, in "long"-,
square-, compact arrays of metal- or plastic tubing, (1) element per
tube, cut free from the spool. The array in turn can be stored in a
covered trench, below floor, or suspended below ceiling. Storage in
such a "long" array is practical, because of its low usage-rate; each
time the billet is incremented, the stock-length consumed is equal to
only the increment-thickness. The array can be loaded by (2) persons,
(1) person @ each end, using reusable nylon pull-shuttles and a
vacuum-hose. Stock also enters the
billet being woven in directions perpendicular to it's length, from (2)
sides, per the following steps. 1) a) From a
"primary"
single-layer array of
("N")-elements
all even- OR odd-numbered
elements are
simultaneously
pulled into the
weaving-apparatus. b) At a later
time, all the
remaining
elements are
simultaneously
pulled into the
weaving-apparatus. 2) From a
"secondary"
single-layer array of
("N")-elements,
spaced @ 90-degr. from
the
aforementioned primary
array, all the
elements are
simultaneously
pulled into the
weaving-apparatus. Each such set of operations contributes to increment
the billet once. Each time the billet is is incremented, the
stock-length consumed is equal to the length/width of the billet plus
req'd. excess. In this case, storage in a "long" array is
impractical, because of its high usage-rate. Additionally, the
number of elements involved is "low", only (2"N") per
increment. Given the above, the side-entry stock may be best handled
on-spool, but with all spooling hardware & -systems designed
"from the ground up" for fully tailored functionality. Explanation
for 2): The text above
describes the storage-tube array for of-spool storage. Actually there
are (2) such arrays, side by side, one is loaded with with stock
currently being used, which one could call the "A"-stock, during
which time the other one can be loaded with what could be called the
"B"-stock. When the "A"-stock is used up, all its elements simultaneously,
(by design), the weaving-apparatus
can immediately continue with "B"-stock, switching over
automatically. Stock-loading one array in the manner as described above
can be accomplished during the time it takes for the stock in the
other array to be fully used up, work can be executed safely & at a
comfortable pace. New stock can be clamped to old stock, element to
element, simultaneously & massively; the initial string-up of a
weaving-apparatus coming on-line can thus also be its last -until major
maintenance anyway- by using such "follow-on"
method. The side-entry stock is
also provided in duplicate; the "A"-stock & the "B"-stock both
extend all the way to the weaving-apparatus; one above the other
-when close to the weaving-apparatus- ready for entry at the (2)
entry-sides of the billet being woven. When the "A"-stock, for both
entry-sides, is used up, all its elements
simultaneously, (by design), the weaving-apparatus can
immediately
continue with "B"-stock, switching over automatically. Again, the
new design for on-spool stock handling referred to above should ensure
that the work to load "B"-stock while "A"-stock is being used up can
be executed safely & at a comfortable pace.
The "operative elements" of the weaving-apparatus are designed as
3D-CAD solid-models with aerospace-grade "CATIA"-software, showing
an illustrative set of sequential machine-configurations detailing each
of (2) successive increments to the billet, seen frontally & from
above, all stored on an exhaustive duplicate set of discs, and also
documented on mylar & on paper. The hardware items so documented
are not patented but the documentation is open for inspection in a
proper non-disclosure environment. An industry wishing to develop
the weaving-apparatus for mass-production of billets may patent the
illustrated hardware & 100%-own these patents. The industry may
additionally 100%-own the existing patent (#5,263,516) covering
the (5) isotropic, 3D-woven constructs.
The weaving-apparatus is composed of major function-modules and has
a high degree of visibility & accessibility thru out. The modules
are emplaced in- & about a sturdy framework, thru the use of large
locating-surfaces, -pins, -holes, -slots, etc. They are removable,
supplied with lifting-hooks,-eyes etc. Some are supplied with
"V"-notched wheels, suited to small lengths of construction-angle
tracks, per industrial practice. Some modules are self-standing. All
modules are "shallow" & "transparent", and free of complex- and/or
minutely toleranced parts. In fact, they have a few simple,
distinct parts, repeated over & over again, located at
regular intervals. Moving-part fits are often very loose indeed, by
necessity. Controls are (generally): hydraulic (linear)
& electric (rotary.)
For contact information, please see: "Information", on the
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