Hello All,
At work we are attempting to balance some impellers to an ISO G6.3 Dual Plane balance and to do this we would like to represent as close as possible within the SolidWorks models. The nature of these impellers has them be out of balance until some work from the designer is put in. Our first attempt focused on balancing with center of gravity trying to hit as close to .130mm,.130mm on X,Y but then we realized we need to include moment of inertia also in the same menu. After some back and forth, we settled on changing that X,Y to .8mm,.8mm (Seeing that it was difficult to achieve lower values and some guesswork was needed in SolidWorks to adjust values) and aimed for the moment of inertia to be as close to:
X,X,X
X,X,X
0,0,1
as possible, with X being any number and the 0,0,1 focused on the axis of rotation of the part.
Issue is, we got cast samples in and found they required about 145 grams of material left to remove when put on a machine to finalize balance, and that is too much to remove. I am wondering if there is perhaps something that was overlooked in our approach? The current team does not have much expertise in model based balancing, so we are trying to troubleshoot. Due to the nature of the project, I don't think I can give many more details beyond what I have. Any thoughts are appreciated.