Abstract
This paper presents a new method for precision measurement of axial and angular motion errors in the main rotational axis of a manufacturing machine. Three displacement sensors and one angle sensor are used in this method. Applying a calculation technique, it is possible to separate axial motion error, two angular motion errors, and the circumference profile. The principle of this method is examined from the viewpoint of spatial frequency analysis. From this principle, it appears that this new method can measure all spatial frequencies, without omitting any frequency. A measurement system performed experiments. The measurement experiments confirmed the separate measurement of the profile and motion errors.
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