Re: Is this doable on a CNC mill?

Thanks to everyone that took the time to offer their opinions on how
to do this. This validates some of what I was thinking.

Regards,
Adrian

--- In CAD_CAM_EDM_DRO@yahoogroups.com, R Rogers <rogersmach@y...>
wrote:

> .9mm slots at their widest point. .035" endmill would be too big.

I'd just make them in two pieces and fit the hub inside the outer
rim. Alot of work.

>
> Ron
>
> turbulatordude <dave_mucha@y...> wrote:
>
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, R Rogers
> wrote:
> > I dont know of a machine configuration that would make those in

one

> piece due to their small size. They would need to be made in two
> pieces. The outer rim and the inner hub (lathework) with the fins
> machined on a 4th axis rotary device. Then assemble. This same
> technique could be applied to a special hub or turbine fan used in

a

> homebuilt machine.
> >
> > Ron
>
>
> I did't see the back very well, but for one piece, an EDM could

get

> it.
>
> for multiple, I think casting could be the best choice with

minimal

> finish machining.
>
> The iddy-biddy holes are the problem as I see it.
>
> one can use a typical 3 axis mill with a compound rotary table to

add

> a 4th and 5th axis and conceivable use some special tooling to
> machine the parts.
>
> Considder a simple rotary unit with a simple hinged mount for

angling

> it.
>
> Looking at the origional, the fins are angled or slanted and not
> straight. for a tiny version the holes would be very hard to make
> by conventional machining.
>
> I think casting would be far and away the eaziest, with EDM

probably

> the eaziest to machine with.
>
> As for final costs, I think casting would much much cheaper for
> production or hundreds. probably a toss up for 4 or 5 wheels
>
> But, I am sure there are watchmakers who think these are big parts.
>
> Dave
>
>
>
>
>
>
> >
> > Monte wrote:
> >
> >
> > Wouldn't a rotary table or indexing table setting horizontal at

the

> > angle of the fins work? Then just pocket out the 'holes'.
> >
> > Monte
> >
> >
> >
> >
> >
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