Re: Cutting helical gear - req for info

>
> Hi All,
>
> I would like to try to cut a helical gear like :
> http://www.youtube.com/watch?v=fps0OR1eF_s
>
> I have noticed that it is using a simple v-shaped bit.
> Could someone tell me which is the simplest/most recommended CAD & CAM
> suite to draw and generate the toolpath/gcode which would be
> executed by Mach3 ?
>
> Regards,
> Daniel
>

Daniel,
That is my video on You Tube.

Couple of things, To be correct the cutter should be ground as an involute but this one was a cutter that was ground up to cut a rack
so it straight sided and not correct. The exercise was to cut a couple of gears purely as show demonstartions more then geometrically correct gears.

The program was hand coded by my sone. It's just a simple move in the X whilst the A axis is rotating using the helical formula to work out the X travel.
It then just returns, rotates to the next tooth and runs the same line as a subroutine.

Ignore the shaking on the video as the machine was on a skated transport stand when this was filmed as it was on route to a UK show.

John S.