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Registered Member #543
Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
I have some 1930s designs for home-made coil winders - including two different wave-winding machines - which are the kind of thing made with wooden cotton reels, a great deal of ingenuity, and accurate carpentry.
Registered Member #480
Joined: Thu Jul 06 2006, 07:08PM
Location: North America
Posts: 644
Harry -
On the topic of "winders", please take a look at the conventional multi-section, "pie-wound" RF choke pictured below. Note the "pseudo-basket-weave" appearance of the windings, when viewed from the side of the "pie". Each pie is oriented 90 degrees to the centerline of the former that the pies are wound on.
I'm trying to figure out exactly what winding process is used to generate these pie sections. It looks like the axis of the former is oscillated back and forth in a single plane, in a fairly narrow angle to generate the angle of the windings. However, I think there is another motion that must be added to get the "basket-weave" effect. If the former were just being oscillated in a single plane, the entire pie would just be a thick disk at a slight angle to the centerline of the former.
You mentioned that you had several designs for coil-winders; anything that generates "basket-weave" pies?
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Cool find: Home made toroid winder
