Datum definition

Sieht für mich auf den ersten Blick korrekt aus. Worum dreht es sich genau?

Thanks Frank. Please translate to English. Thanks again.

Mohamed

Looks correct to me at first glance. What exactly is it about?

I have to measure all the circles to get Datum-B- All I need is to immobilize the part. Datum-A- is Okay.  Datum-B- just give me the center os the inner circle and daum -C- one of the circles for rotation.

For reference C, two circles [C1] and [C2] must be measured. Then a constructed line is created through the two circles. This line is then reference C.

That is correct for rotation. That is clear. My question is for Datum-B-. Do I have to measure al the circles to get Datum-B-? Why not the OD or the ID?

hi

B is a constructed circle, it would be better if you included all the holes in the construction.

There is no rule that you have to use all the holes, but use at least 4 evenly distributed.

hi

B is a constructed circle, it would be better if you included all the holes in the construction.

There is no rule that you have to use all the holes, but use at least 4 evenly distributed.