Los Angeles designer needs local help
Los Angeles designer needs local help
(OP)
I am an independent designer with a degree in art/illustration, not mechanical engineering. I am working on a project that requires 2 geneva wheels. One Geneva is 4 stop, the other is 3 stop.
Ive made a couple of genevas utilizing illustrations in books and a laser cutter cutting 1/8" delrin but the resulting wheels do not function perfectly.
My deadline is looming and I need perfect intermitant motion... can anyone help?
Ive made a couple of genevas utilizing illustrations in books and a laser cutter cutting 1/8" delrin but the resulting wheels do not function perfectly.
My deadline is looming and I need perfect intermitant motion... can anyone help?





RE: Los Angeles designer needs local help
http://en.wikipedia.org/wiki/Geneva_wheel
RE: Los Angeles designer needs local help
This article may help;
http://www.me.berkeley.edu/~adarsh/Geneva.pdf
RE: Los Angeles designer needs local help
It used to be possible to buy pocket-size 'precision' Geneva pairs from outfits like Secs and Berg and Pic and maybe half a dozen other 'precision' mechanical device suppliers.
I'm guessing that your mechanism is too large for them to do you any good, even if you could find them, though you gave little hint of scale or mass.
If your prime mover is electrical, it _is_ possible to get 'perfect' intermittent motion, or nearly any arbitrary motion, from a programmable (electric motor) drive... which is what I'd be inclined to use instead of a Geneva drive these days.
If all you need is better precision than a laser cutter can give you, a CNC mill can give you better edges, possibly starting with the same G-code.
Mike Halloran
Pembroke Pines, FL, USA
RE: Los Angeles designer needs local help
I am great at copying. I have had no luck finding quality images of a three stop geneva wheel.
Can anyone point me in the right direction?
RE: Los Angeles designer needs local help
http://www.tangendrives.com/seriesr.html
Ted
RE: Los Angeles designer needs local help
The geometry is pretty straightforward. If you need info on how to derive this, I could probably derive it and post it if you want.
Good luck.
-T
Engineering is not the science behind building things. It is the science behind not building things.
RE: Los Angeles designer needs local help
http://mw.
Look at the Molecular Modeler software and the additional models available.
RE: Los Angeles designer needs local help