Need Help!- eggshaped post

[chunkymonkey]

people,
i am running a citizen m32 and trying to mill a simple post/boss on a part and the darn thing is eggshaped. a half thou wouldn't bother me, but i am looking at .003" i have reprogrammed this thing 6 ways to sunday and nothing has worked. my tools are on center, new endmills, different speeds and feeds. any ideas?

[PixMan]

What diameter are you trying to mill? I ask so I can understand what percentage of the total dimension that .003" represents. Which axiis are you using to make the feature?

[UK-Engineer]

Hello

Sounds like your Y to Z axis ratio is out. If not code specific this could be caused by you programming Y axis co-ordinates in radiall as opposed to diametrical. Citizen M32 series 2 used radiall values on Y1 axis whilst series 3 and newer the user can select via MC Strct page

If this is not the case then then if you let me know code and size required i can hopefully help

[chunkymonkey]

it is milling in the yz plane. it is a .125Ø post in 303ss material.

[ProProcess]

If you are using Z1 it could be that the Guide Bushing needs tweeked...
If the feature seems good in Y but smaller in Z then GB too tight.
If the feature seems good in Z but large in Y the GB is too loose.
When everything is right, they still do not produce perfect round post or holes.
HTH, Good Luck!

[Shadow_CMA]

Sometimes the radius in the program might need to be tweeked, are you using G12.1, or are you selecting the proper plane select (G19 Y-Z plane).

Shadow
CMA Service

[cogsman1]

If you could post the code we could rule that out.
ALSO the "R" and "P" values you are using.