Influence of sensing method in the measurement of mass and form deviations with coordinate measuring instruments

The paper compares three different strategies for sensing cylindrical parts with coordinate measuring instruments. These strategies are the classical one, where the specimen axis coincides with that of the spindle of the measuring instrument; the radial direction method, where the two axes are not aligned and the spindle must rotate around the test piece; and the four-quadrant method, where measurements are effected only in the three directions of the measuring instrument. Tests were conducted on specially prepared test pieces, and it was found that the different strategies lead to different results on the same test piece.