Re: Building router, what to do with 4th axis

If you're building now leave the 4th alone. Just go with the flat
sheets 2 1/2D milling. Contouring the surface would be true 3 D
milling, and spinning the work (either parallel or perpendicular) to
the cutter would be the fourth axis.

Just imagine making a pedestal, you would need to rotate the work
perpendicular to the cutter to cut the flutes on the column, and
stuff like that.

The mastering the 4th sets the good CNC work from the truly awesome
CNC work.

Aaron Moss
www.IndustrialHobbies.com


--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Mike Hammel" <mycamel@c...>
wrote:

> I am designing my router right now. My electronics support X,Y,Z

and A

> axis. I would like to use the A axis, but don't know how or what

to use it

> for. Most of my cutting will be flat sheets, but the 4 axis is

interesting!

>
> Any ideas!
>
> Mike Hammel
> 1704 Bullard
> Arkansas City, KS
> 67005
> ----- Original Message -----
> From: "industrialhobbies" <admin@i...>
> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Tuesday, November 25, 2003 4:49 PM
> Subject: [CAD_CAM_EDM_DRO] Re: For the surfboard guys
>
>
> > Unless you have a 4th axis to rotate the board you'll be wasting

your

> > time with CNC. You will find two things to be true.
> >
> > 1. Once you go from a block of material to a free form shape you
> > will never be able to hold it in the proper position.
> >
> > 2. The second you unclamp anything or remove it from a referenced
> > axis you will spend a huge amount of time getting it referenced

again.

> >
> > The key to any CNC application is to let the machine do as much

work

> > as posible in a single shot.
> >
> > so, back to the design part.
> >
> > Ditch the "table" and mount a rotary axis in it's place.
> >
> > We're wandering into off-limit take though, if you want contact me
> > offline at admin@i... and we'll continue this.
> >
> > Thanks
> > Aaron Moss
> > www.IndustrialHobbies.com
> >
> >
> >
> > --- In CAD_CAM_EDM_DRO@yahoogroups.com, "surfbuilder2003"
> > <mek0002@a...> wrote:
> > > Hello Aaron,
> > >
> > > I am trying to put together one of these tables. This project

will

> > be
> > > long running as I am very new at cnc. Basically this is the

first

> > > time I have heard servo or stepper. I am only building my table

as

> > a
> > > 3 axis and plan to turn the board over once one side is cut out.
> > Does
> > > this sound prctical? I cant image being able to afix the board

so

> > it
> > > wont move but also have it rotate to cut all sides. What do you
> > think?
> > >
> > > Mike
> > >
> > > --- In CAD_CAM_EDM_DRO@yahoogroups.com, "industrialhobbies"
> > > <admin@i...> wrote:
> > > > Got a couple of questions:
> > > >
> > > > I'm guessing that since your making a 3d product (surfboards)
> > your
> > > > both making table-less gantry's i.e. no actual table just a

open

> > > > space in the center. A 4th axis would run parallel to the X-
> > axis.
> > > > This axis would rotate the block of foam to expose all sides

of

> > the
> > > > foam to the cutter. Is this your idea?
> > > >
> > > >
> > > > Next question
> > > >
> > > > How long should it take to cut out a board?
> > > >
> > > > That's all.
> > > >
> > > > Thanks
> > > > Aaron Moss
> > > > www.IndustrialHobbies.com
> >
> >
> >
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