Re: [CAD_CAM_EDM_DRO] CNC band saw, FPM LED display

How about a tach like this:

http://www.mscdirect.com/
IWCatProductPage.process?Merchant_Id=1&Section_Id=1510&pcount=15&Product
_Id=341936&Keyword=Y

(search for 341936 at www.mscdirect.com if that URL gets mangled)

It's a digital tach with a remote sensor. Put a sticker on it that says
"FPM in Tenths" :-)

Regards,
JJ

On Wednesday, Oct 15, 2003, at 18:56 US/Eastern, dan wrote:

>
>
> I am rebuilding a band saw, and will add an inverter drive
> for the blade motor. One thing I want on it, is an LED display, most
> likely 3 digit, to show Feet Per Minute blade speed (50-350FPM).
> The gearbox input shaft turns 10 times per foot of blade travel.
> Anyone know of a source for a low-cost display and appropriate
> electronics (or a schematic to build same) that will count the input
> shaft turns (divided by 10) using a prox sensor or similar?
>
> I'd eventually like to automate it. Would appreciate any thoughts or
> sources for "lower-cost" way to do this using a servo or closed loop
> stepper. A membrane keypad and LCD display for programming (number of
> pieces/length of piece) would be ideal (the 25 thousand dollar cnc
> bandsaws all have this type of control).
>
> Have a small cold saw I'd like to do same with. Could also be used in
> wood shops, or anywhere a cut-to-length line is in use.
>
> TIA
>
> dan k
>
>
>
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