I think we are talking about different kinds of filament winding?
The kind I am talking about is used for making composite (eg fiberglass,
carbon fibre) pipes, masts, spars, propeller blades, tanks, bridges,
cooling towers etc - and you need software to run the machines.
I suppose you might wind a tube without software, but anything more
complex would be beyond me.
There are at least three kinds of commercial software at £1500 per year
or so, but I can't afford that.
-- Peter Fairbrother
On Tue, 16 Nov 2010 15:09:48 +0000, Peter Fairbrother
Brain fart moment :) I was thinking of braiding machines which
produce the geometry of fibres that are used for wet layup large
vacuum bagged composite tubes, normally with a 45 deg pattern similar
to protective cable braid. The end result is similar to filament
winding but far less messy.
Going back to what you really meant, It's a case of coordinating the
rotation of the mandrel with longitudinal movement of the feed
mechanism to get the winding pattern you require.
As it's not really high speed and the possible winding patterns are
not huge then its probably within the capabilities of a dirt cheap PLC
fed by a optical encoder for mandrel rotation, with limit switches at
each end, a few delay loops with bit of calculation to get the right
wrap pattern and then a step / direction output to a stepper motor
moving the carriage.
Is this any help?
On Tue, 16 Nov 2010 18:34:12 +0000, The Other Mike wrote:
I first thought of filaments for light bulbs and valves. For these (45
years ago) there was no software - it was all mechanically controlled
and made from thin tungsten wire wound upon a mandrel.
Maybe you could rig up a counter to add the number of turns and stop at
the amount needed.
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