Re: [CAD_CAM_EDM_DRO] Re: lathe arcs

I realize this is not hi tech, but if u need to get it done
take a look at this option.

http://www.metalworking.com/dropbox/radius_turning.JPG

>
> --- In CAD_CAM_EDM_DRO@..., "Carey L. Culpepper"
> <mr.c@b...> wrote:
> > I am in need of some help. I am doing lathe work on my cnc converted
> > Hardinge hlv-h lathe. I am making forming rollers for specialized
> sheet
> > metal shapes. The first sets of rollers were strictly angular flats
> and
> > angles. The next stages require arcs (fillets). I cannot get my
> machine
> > to cut the arcs. It machines all of the flats and angles perfectly
> but
> > does weird things when it gets to the arcs. The drawings and gcodes
> are
> > Vector 8.2 generated. I even went back and altered a previous BobCad
> > drawing(which was used to make the previous rollers without problem)
> > with some fillets. Same type of problem. I have been working on
> this for
> > several long frustrating days. I have talked with Fred and tried
> some
> > things and emailed Doug and tried doing it with relative coordinates
> > which did result in some arcs but still not accurate to the
> drawing. I
> > am using CNCPro as a control program. I have tried drawing in
> different
> > quadrants, all manner of different things- all wrong. This is
> probably
> > something really simple as far as setup(to the experienced
> operator) but
> > I just haven't found it yet. I made up a pen holder to draw the tool
> > path on the lathe and have gotten some rather unusual shapes. Fred
> and
> > Doug have been very helpful but it is the weekend and I am
> desperate.
>