Re: [CAD_CAM_EDM_DRO] Re: Cam program and post needed for a cnc propellor carving lathe

Another way to do it is do draw your blade in CAD, and generate an .stl, of
the top.

Now rotate the part 45 deg. on it's axis, in CAD and generate a new TOP
.stl of the part
Do this until you have rotated 360. and generated all the required passes.

Now the wood simply needs to manually rotated to the same angle when
machining, as was used when generating the file.

It's a bit of work to generate all the files, but only done once.
The rotation of the blade could be done manually, with a geared head, or if
it is a driven axis, just insert a G00 Axxx between every new milling file
to give the desired rotation.

Regards
Roland



2009/1/29 Larry <reiss_machinist@...>

> I want to go with a lathe configuration because it will machine both
> top and bottom of the blade. A router or mill will do only one side of
> the blade at a time. I think this method will have a faster cycle time
> with less fuss. And the saw blade can be changed if necessary to a
> vertical belt sander for finishing.
> Thanks, Larry reiss Omaha, Nebraska
>
> -- In CAD_CAM_EDM_DRO@yahoogroups.com <CAD_CAM_EDM_DRO%40yahoogroups.com>,
> Jack McKie
>
> <freshwatermodels@...> wrote:
> >
> > Larry,
> >
> > Might be easier to just go with a 3 axis CNC router and ordinary
> cad/cam software. The cnc router might also be useable for other parts.
> >
> > Another old fashioned alternative would be a duplicating mill which
> allows you to duplicate a hand made blade.
> >
> > Jack
> >
> > --- On Thu, 1/29/09, Larry <reiss_machinist@...> wrote:
> >
> > From: Larry <reiss_machinist@...>
> > Subject: [CAD_CAM_EDM_DRO] Cam program and post needed for a cnc
> propellor carving lathe
> > To: CAD_CAM_EDM_DRO@yahoogroups.com <CAD_CAM_EDM_DRO%40yahoogroups.com>
> > Date: Thursday, January 29, 2009, 1:26 PM
> >
> >
> >
> >
> >
> >
> > I am interested in building a cnc propellor carving lathe to create
> > wooden wind turbine blades, one blade at a time. The proposed lathe
> > would be run with Mach 3 and 2 axis control having a servo motor
> > drive on the headstock spindel and one on the cross slide axis. There
> > would be gearing and a lead screw to slave the Z axis from the spindel
> > at the rate of .125" per revolution.The cutting tool would be a 10"
> > dia. carbide table saw blade that would move in and out on the cross
> > slide X axis as the spindel rotated continuously.
> > I have use of a program that will create an STL. file of the
> > blade.But I need to learn of a cam program that will let me define the
> > axis of rotation and has a post processor for a machine of this
> > configuration.
> > Thank You, Larry Reiss Omaha, Nebraska
> >
> >
> >
> >
>

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