Gear cutting

[John S]

Because everything is done in software you can play "what if ?" to your little hearts content.
Not quite what you want to fit in? How about a 18.5DP cutter or better still to get bang on a 18.67564 DP ?

Sooooooo.

I drew a 40 tooth XL series timing pulley up in CAD [ with the help of Mr SPI Industries ] and got some measurements off it.

They went back to Gearotic [TM] and juggled some figures.



So if we use 16.25 DP we get an OD of 2.5240, we need 2.5240, OK so far

Then play with shift, stubbing and tooth width we get a total depth of 0.0571, we need 0.0550, 2 thou too deep, think I can live with this.

Tooth width is 0.1242 and we need 0.1240, even closer.

Now bung the dxf onto the original drawing and it's within a gnats left bollock.


It's still early days on this program but so was Mach3 at one stage and look where it is now.

Once saved all that is needed to make any XL pulley is to change the number of teeth.

[Smiler]

Hi John,

I watched your helical gear video on t'tube John, should sell quite a few licences on it's own I urge anyone at all interested in making gears to view it and download Gearotic Motion NOW!. I'm hoping the wife will buy my license for my birthday :)

Jeff.