Re: [CAD_CAM_EDM_DRO] Cool Worm Gear

Ian,

Thanks for the uploads, I get the picture! Perhaps you have a pix of a
gear being hobbed? Can regular gears be made this way also? I'm really
not ready to by a set of gear hobbs. Maybe later.

Alan


Ian Wright wrote:

>
> Hi Alan,
>
> The tap size is the same as the worm thread so it depends on how big you
> want the whole lump of worm and wheel to be. I have uploaded a couple of
> files to the egroups site (link at the bottom of the message) showing one of
> the worms and wheels I made using a 1/2" whitworth tap - i.e. the worm is
> 1/2" diameter and the wheel has 60 teeth and is a shade under 1 5/8" overall
> diameter. It is best to use a fairly coarse pitch thread or the teeth get a
> bit weak but there is really no constraints on the sizes you can use.
>
> Ian
> --
> Ian W. Wright
> Sheffield UK
> www.iw63.freeserve.co.uk
> ----- Original Message -----
> From: "Alan Marconett KM6VV" <KM6VV@...>
> To: <CAD_CAM_EDM_DRO@egroups.com>
> Sent: 03 November 2000 19:35
> Subject: Re: [CAD_CAM_EDM_DRO] Cool Worm Gear
>
> > Ian,
> >
> > I get how the tap can hobb out a gear, but what size taps are suitable
> > for this? You must run the lathe slow? I can calculate the proper gear
> > blank size (well, for normal gears). I want to try this!
> >
> > Alan
> >