UG/NX 8.5 Help Balancing Holes

[luisgiraldo89]

Hey Guys,

is am fairly new to NX just came upon a project that i need help on. I need to make two balanced 180 degree holes for the face shown in the attachment. I am using NX 8.5 can someone help?

 

[KENAT]

I suggest you post in the relevant SW forum

http://www.eng-tips.com/threadcategory.cfm?lev2=22

Posting guidelines faq731-376

http://eng-tips.com/market.cfm?

(probably not aimed specifically at you)
What is Engineering anyway: faq1088-1484​

 

[rb1957]

can't you "just" drill a hole through the solid part ?

another day in paradise, or is paradise one day closer ?

 

[luisgiraldo89]

The hole needs to balanced so it is not always at 180 degrees?

 

[rb1957]

I quote "two holes 180deg from each other".

what do you mean by "the hole needs to be balanced" ... my tires need to be balanced ?

another day in paradise, or is paradise one day closer ?

 

[ewh]

I think KENAT meant the relevant NX forum -> forum561

Is this part asymmetric to require balanced holes? Balanced within what tolerance?

"Know the rules well, so you can break them effectively."
-Dalai Lama XIV

 

[Sparweb]

Luis,
Something may be lost in translation, and it may have started with the drawing you attached, not even with what you said.
It could mean many things, and I can't tell which:
"Balance" = equal diameter
"Balance" = equivalent positions
"Balance" = mass will be inserted into holes to prevent shaft vibration.
"Balance" = opposite positions, which would be redundant after also saying "180 degrees".
Each of these interpretations could lead to creating a different model.

...or it means something else. Could you clarify what the holes are for?
The part looks cylindrical, so projecting a hole to enter the surface may require a definition of the geometry of the hole before creating the actual hole feature.



STF

 

[luisgiraldo89]

The holes are use to place on a balance machine to balance the tool to its right position. I would think it would fall more under this below:

"Balance" = opposite positions, which would be redundant after also saying "180 degrees".
Each of these interpretations could lead to creating a different model.

Hopes this makes a little more sense

 

[rb1957]

so you're figuring the CG analytically and aligning the hole CL with this ... maybe using an oversize hole and a bush (eccentric?) to position the balance point accurately ?

another day in paradise, or is paradise one day closer ?