Re: [CAD_CAM_EDM_DRO] mach3 question_2

For CNC, it really does not matter what the leadscrew pitch is. It could be
17.357 turns/inch. The floating point math works it out to a precision far
beyond the mechanical tolerances. It's only humans that like 'nice' round
numbers.

Roland


2009/12/5 Danny Miller <dannym@...>

>
>
> All that info should be loaded when you run the Mach3 Loader and select
> the new XML file.
>
> As far as inches/mm goes, that depends entirely on your leadscrew. The
> Taig is 20 turns/in for example, which works out nicely, but if we were
> to state it in mm, it would be an irrational number. I don't know Sieg
> myself, but Google'd this: looks like the Sieg comes with a metric
> leadscrew- whole-number ratio of turns/mm- but some people converted it
> to a turns/in leadscrew. If it's metric, you'd... I guess you'd have it
> in Metric mode when you define the leadscrew, then you should be ok to
> change Mach3 to inch mode if you want to define the max feedrates,
> acceleration, and so on. It's gonna go into Inch mode when it runs a
> file which declares units to be inches anyways.
>
> Danny
>
>
> Chuck Merja wrote:
> > More newbie questions. We did a new install of MACH3 when we got the
> > machine, but the previous owner sent a config file (xml) that he thought
> > would allow us to not have to reconfig MACH3 to the mill. When we
> installed
> > M3, we were asked to name the mill config, which we did - seigx3. We
> later
> > renamed the seigx3.xml file to "old" and copied the file supplied by
> > previous owner into the c:\MACH3 (default) subdirectory and renamed it to
> > seigx3. Shouldn't this mean that MACH3 should be configured to the mill?
> > It appears that such isn't the case, in that the parallel port had to be
> > configured by hand (none of the pins were turned on or identified), and
> the
> > motor tuning number is set at 2000. So we had to set up the parallel port
> > pins and our XY travel on the DRO is way off. It appears the extents of
> > travel are 0 to 118ish in X and 0 to 40 in Y, instead of 0 to 7 inches in
> X
> > and 0 to 4 in Y. Is this adjusted in the motor tuning tab or elsewhere?
> > Initial set up was in mm - we'll probably use inches, should we change
> that
> > and recalibrate the motors? Thanks Chuck
> >
> >
> >
> >
>
>
>

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