View Full Version : Thought you might like to see what i have been playing with ?

John S
06-10-2010, 10:34 PM
Art Fenerty, the writer of Mach3 has been writing a new program for cutting gears.
http://www.gearotic.com (http://www.gearotic.com/)

I have been working with him sorting out the spur and helical gears side to it,

Where this program scores is that it can cut a gear with a normal off the shelf end mill, no special cutters needed.

These were cut using just a 3mm end mill.


Today, first paying job was to make this bent and broken pinion gear.


Into this.


Done with a 1.5mm cutter.

06-10-2010, 10:40 PM
Nice work John...Makes me want to throw my dividing head away.

07-10-2010, 12:22 AM
Very nice.
The gears in the 1st photo are the same ones from the youtube video? Mesmerising to watch :)

07-10-2010, 02:31 AM
I'm just wondering wouldthose slitting saw blades work with this? they go from 0.5 to 3mm wide and are cheap to buy.

John S
07-10-2010, 09:15 AM
If they had side cutting teeth then yes they would work but it would have to be done on a CNC horizontal mill because the program works the offsets out in Y and A

To use a slitting saw on a vertical it would have to be rewritten to use Z and A

Another disadvantage is that because of the larger diameter it would not be possible to work up to a shoulder or larger gear, however this would be offset by the cutters being a lot stronger.

[Edit] another disavantage is that you wouldn't be able to do helicals