Re: [CAD_CAM_EDM_DRO] Can anyone advise me please?

On 02/16/2013 03:42 AM, snokket wrote:

> Hi.
> can any one give me some advice please.
> I am building an indexer or fourth axis and have several timing belt pulleys but am not sure which ones to use to get the best results.
> The number of teeth on the ones I have are --- 12 24 32 36 48 60.
> Any help will be gratefully received.
> Thanks.
> Gray

It's complicated. First of all, what resolution do you want? One
degree required a 200:360 ratio, or 1:1.8

Minutes (desirable for cutting some gears) or seconds is a lot harder.
Let's assume a 1:1 ratio and a 35 tooth gear, each tooth is 10.28571429
or so degrees, 1.8 degree steps just won't cut it. With one minute
resolution, you can get within 0.1%, with 1 second resolution, you can
get within 1/60th of that.

Dave 8{)

--


/"Among the many misdeeds of British rule in India, history will look
upon the Act of depriving a whole nation of arms as the blackest."/

Mohandus Ghandi, An Autobiography, Page 446.


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