Alignment question

[Tested]

I have a part print that has got me scratching my head. I made a drawing of the area in question “see attachment”.
What I have is DATUM –A- created from A1, A2 & A3. DATUM –B- & -C- are circles measured on 13.3° angle off from my DATUM –A-. My offset of 0.1 is only true when I’m level to –A-. How would you align to this?

[Peter Warcholyk]

Tested,

After measuring "B" and "C", construct cast points out of them.
Next, iterative alignment; level 3 points A1, A2, A3, then rotate between B & C.
Last origin B, done.

Regards,
ZydecoPete

[Tested]

...

Tested,

After measuring "B" and "C", construct cast points out of them.
Next, iterative alignment; level 3 points A1, A2, A3, then rotate between B & C.
Last origin B, done.

Regards,
ZydecoPete

No CAD.

[Matthew D. Hoedeman]

No CAD.

Ya don't need cad to do an iterative alignment, all you need are the exact XYZIJK values for all the points you are going to use for the alignment. You just type them in.

[Tested]

>>>

Ya don't need cad to do an iterative alignment, all you need are the exact XYZIJK values for all the points you are going to use for the alignment. You just type them in.

You are asking me to check the two circles as ovals , this in it's self as they are not at -A- datum heigth and not round as checked stops the alignment you are doing.

[rangerboat72]

Don't measure them as ovals.

[Matthew D. Hoedeman]

If you can 'see' the feature as a circle from an axis, then measure it as a circle, if you need different heights for each hit, do it as a learned feature, as long as the nominals (XYZ) are correct as well as the 'circle' vector (0,0,1) it SHOULD work as an iterative alignment. A learned circle can have each hit at a different Z height, thus allowing you to set the height of each just below the 'top' of the part.

[Tested]

I guess I'm not explaning this very at all well.
I'll try again when I have some more time.
I thank you all for your input. I'll see if I can define what I have better so as you are able to get a hold of what is really going on .

Thanks again.

[dwade]

Measure your datum targets A1 thru A3 construct base plane

Measure a plane on top of datum B
Measure cylinder on OD of B
Intersect point plane and OD

Measure a plane on top of datum c
Measure cylinder on OD of c
Intersect point plane and OD

Construct your alignment from the points

[Tested]

111

Measure your datum targets A1 thru A3 construct base plane

Measure a plane on top of datum B
Measure cylinder on OD of B
Intersect point plane and OD

Measure a plane on top of datum c
Measure cylinder on OD of c
Intersect point plane and OD

Construct your alignment from the points

You seem to understand much better what I am trying to do, but I do have some other things going on I forgot to put into the picture.
First A1, A2 & a3 are all at different heights .
Next -B- are three small prongs and there tops are not at the same angle as the circle that crates the -B-, they also from a cone.
Third is the -C- is also a cone. Both of these "-A-, & -B-" are at a given height up from A1.
forth is that the offset between -B-, & -C- is only true when leveled to -A-.

I think I have added all the missing parts now.
Could you look at it again with these things figured in.

Thanks

[JoeRZ]

1) Probe individual points for datum targets A1, A2, & A3.

2) Create offset plane - since A1 is set, input offset value for A2, and A3 - LEVEL to plane and trans Z origin.

The rest as Tested mentioned...

Would be nice to see the actual print or is this a fixture drawing? illustration not clear.

[JoeRZ]

[QUOTE=JoeRZ;46561]
The rest as Tested mentioned...

Sorry - I mean dwade's suggestion...