ball burnishing process on herringbone gear

[JEK5019]

good day all -

you'll have to pardon me as i have '0' experience with machining. however, i am beginning some designs that i intend to manufacture - and need some help in clarifying.

i have created a herringbone gear. i would like to the finish to be highly polished - like ball burnishing.

what kind of machines will this require? a 4-axis for the herringbone?

i want the edges of the herringbone gear to be sharp (like the original design) will ball burnishing wear down the edges?

thanks in advance!

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[hanermo]

It looks like a job for a T&C cutter grinder setup, with perhaps custom dressed wheels, wheels dressed to shape.
Corners may be a problem, or not.

If you can do the gears on a T&C, you could likewise burnish the surfaces using a same shape wheel of maybe carbide.
Or maybe get a steel wheel coated via PVD or similar.

Carbide blanks are not too expensive, coating tools is not too expensive, both under 100$ afaik.

Burnishing the herringbone would be quite slow, via homebrew cnc.
This makes the gear somewhat expensive.

If it takes 10 minutes, your cost to produce is about 5-10$, each.
You would need to pay off the wheels, burnishers, cnc kit, in some reasonable time, and 30-50$ / work hour to pay off everything else.

[JEK5019]

It looks like a job for a T&C cutter grinder setup, with perhaps custom dressed wheels, wheels dressed to shape.
Corners may be a problem, or not.

If you can do the gears on a T&C, you could likewise burnish the surfaces using a same shape wheel of maybe carbide.
Or maybe get a steel wheel coated via PVD or similar.

Carbide blanks are not too expensive, coating tools is not too expensive, both under 100$ afaik.

Burnishing the herringbone would be quite slow, via homebrew cnc.
This makes the gear somewhat expensive.

If it takes 10 minutes, your cost to produce is about 5-10$, each.
You would need to pay off the wheels, burnishers, cnc kit, in some reasonable time, and 30-50$ / work hour to pay off everything else.

thanks hanermo -

all good suggestions/advice!