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View Full Version : Need Help! eggshaped post



chunkymonkey
07-07-2009, 03:53 PM
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
07-07-2009, 08:52 PM
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
07-08-2009, 02:14 AM
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
07-08-2009, 07:19 AM
it is milling in the yz plane. it is a .125Ø post in 303ss material.

ProProcess
07-08-2009, 09:09 AM
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
07-16-2009, 11:29 AM
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
07-17-2009, 10:10 AM
If you could post the code we could rule that out.
ALSO the "R" and "P" values you are using.