Re: CAD(ing) gears for later milling

My thought and understanding was that the best method (on a SHerline)
would be to have a cutter of the correct shape and run an mill
program that indexed the material (A axis) around the material. I
understand that it would not be the best to attempt to cut a gear on
flat surface. I'd be cutting gear in plastic or Delron, maybe
aluminum but not often.

Thanks,
Ken

--- In CAD_CAM_EDM_DRO@y..., "stevenson_engineers" <machines@n...>
wrote:

> --- In CAD_CAM_EDM_DRO@y..., "mszollar" <mszollar@g...> wrote:
> > I'm have a need to mill gears of various diamiters and teeth

count

> > and would like to get an idea from persons in the know (aka; on
> >this
> > list) of how one might go about CAD(ing) gears so that I can have
> >my
> > CNC mill create them. All the gears (I'm thinking about) are
> > straight teeth (nothing helical; yet).
> >
> > Thanks,
>
> Ken,
> Not too sure if I understand the question correctly but if you are
> looking to follow the involute shape whilst the gear is laying flat
> ie, face up, then you will have a problem getting into the tooth
> space with a cutter.
> If you wish to cut them across the face then all you will need is a
> formed endmill to the correct profile and a means of indexing.
> Some CAM programs like Dolphin have an involute program built in.
> I believe Fred is going to offer a paid add on to Vector at a later
> date but don't quote me on this.
> These are aimed at the wire erosion market where cutter size isn't

a

> problem.
>
> John S.