Re: Gear milling

--- In CAD_CAM_EDM_DRO@y..., machines@n... wrote:

> --- In CAD_CAM_EDM_DRO@y..., smoke@t... wrote:
> > Anyone know of a SIMPLE program (possibly a plug in?) for
> generating
> > drawings of gears so's I can generate some g code for milling

them?

> >
> Smoke,
> Unless these are big gears how are you going to get a tool into the
> gear shape?
> Most of the gear generating programs are for wire eroders. Milling
> with small cutters won't give you a deep enough face width.
> There is a program here:-
> http://www.simtel.net/pub/pd/41862.shtml
> This will even generate the G code for you, or save as a DXF file,
> but beware they are large files as it's all small moves.
>
> John Stevenson

A possible solution for making gears for low speed applications would
be laminating with rivets, screws etc. several thin gears machined
out of sheet metal. The X and Y milling coordinates would generate
the profile of the teeth around the periphery. The thin sheet metal
would allow use of a small enough endmill diameter for a given tooth
pitch as well as the keyslot. Machinery's Handbook should give tooth
profiles which can be
circular arrayed in a CAD program and dxf'd out for G-coding.
Nelson Palen