hey guys! I'm having trouble validating a measurement method. I am finding different values of concentricity between two diameters. We have already tested leveling in different work planes and positions and the values do not match when compared. in DCC mode I am always creating a plane and a cylinder, where I level and give origin to the cylinder and the plane is my height reference. In this cylinder that I level, I measure three diameters and after measuring them, I measure another larger diameter that is about 20mm away from them and I make the concentricity between them.depending on whether I place the piece lying down or standing up, changing my work plane, my concentricity varies from 0.070mm to 0.200mm. what do you think it could be?
Concentricity is the evaluation of a point or center point (of a circle) to a datum. The derived median points along an axis would be Coaxiality. The datum of both is always an axis, although the datum of a concentricity can be simplified to a projected point.
In addition, in the ISO world, the dimensioned circle and the datum must be coplanar for concentricity (see ISO 1101).
One of the problems for designers and metrologists is that concentricity and coaxiality have the same graphical representation.
Concentricity is the evaluation of a point or center point (of a circle) to a datum. The derived median points along an axis would be Coaxiality. The datum of both is always an axis, although the datum of a concentricity can be simplified to a projected point.
In addition, in the ISO world, the dimensioned circle and the datum must be coplanar for concentricity (see ISO 1101).
One of the problems for designers and metrologists is that concentricity and coaxiality have the same graphical representation.
