Dcc Iterative After Manual Alignment

[Gary Fitzgerald]

Can one utilize a DCC iterative alignment right after a manual alignment? I see this as eliminating the need to manually drive to the additional remeasure iterative points on the first banked part and on subsequent parts eliminate the manual part all together.

Is there any know bugs with this approach?? This is surely a time saver. Any direction is greatly appreciated.

Thanks Gary

[Rick Coleman]

Yep

I will usually copy/paste the same features used in my manual alignment to use for the dcc alignment. Just add a few move points and you're ready to go. For more than one part, the manual alignment can then be "unmarked". Then just run the dcc alignment.

[Matthew D. Hoedeman]

ALWAYS, no matter WHAT type of alignment you do, you are MUCH better off doing a DCC alignment after the first alignment, before you measure any check features. YOU BET, do that DCC ITERATIVE alignment, everytime. Frist time through, set your targets to a HIGH value (like 10 and 2) then for the DCC (with MEASURE ALL ALWAYS) tighten it up to 0.5 and 0.1 (or less).

[\v/inston]

the manual alignment means nothing for checking the part, so make it as simple as possible. the manual just joins the part, the cmm and the cad model together so they all know where each other are.

for the dcc alignment you want to use datum features, take more hits, and watch your hits to make sure they are good. one bad hit on datum -a- can throw off your measurements.

[JamesMannes]

I do a manual iterative alignment, a DCC iterative alignment, an alignment to the major datums (ABC_ALIGN1), and then I do another alignment to the major datums(ABC_ALIGN), the reason that I do the second alignment to the major datums is that there are times that we utilize a point on an inside surface (all 3 axis' are called out basic) and in order to get a good alignment from this schema a second alignment is necessary. I learned this from the old unix based software AVAIL(they called part of it vector delta (for a plane), and the rest would be consistent with the iterative alignment used in PC-DMIS).

editted

[kpayne]

I use a manual iterative alignment followed by a DCC find iterative alignment (for multiple parts on the same setup) and then measure parts datum’s to created a “Auto ABC Alignment”.

Kevin

[Gary Fitzgerald]

Thanks Gang