CNC division

Hi,

I've been thinking about running a dividing head / rotary table under cnc
control and was wondering how the division is usually arranged. As most
divisions will not be whole numbers of steps on a stepper or encoder, you
obviously can't just tell the thing to round up or down the error as you
will likely finish up with a 364 1/2 tooth wheel instead of a 365 one (for a
year calendar on a clock). So, with a slight bias towards EMC, can you have
the cnc software do the necessary computation to get closest divisions or
would you have to do it with a hand-calculated canned cycle for each number
of divisions - or perhaps some other way?

Ian
--
Ian W. Wright
Sheffield UK
www.iw63.freeserve.co.uk