Position deviation - ichihensa

…The allowable value for the orientation deviation is called the orientation tolerance, and similarly, the parallelism tolerance, squareness tolerance, and inclination tolerance are respectively. In addition to the orientation deviation, the deviations of related features include position deviation and runout. Position deviations include positional deviation, which indicates the magnitude of deviation from the theoretically correct position; coaxiality, which indicates the magnitude of deviation of an axis that should be in the same line as the datum axis in a round shaft formed by several cylinders of different diameters; concentricity, which is also applied to thin objects; and symmetry, which indicates the magnitude of deviation of a feature that should be symmetrical. …

*Some of the terminology that refers to "position deviation" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…姿勢偏差の許容値を姿勢公差，同様にそれぞれを平行度公差，直角度公差，傾斜度公差という。関連形体の偏差には姿勢偏差のほかに位置偏差と振れがある。位置偏差には，理論的に正確な位置からの狂いの大きさを表す位置度，直径の異なる円筒のいくつかで成立する丸軸などで，データム軸線に対する同一直線上にあるべき軸線の狂いの大きさを表す同軸度，同様に薄物に適用する同心度，対称であるべき形体の狂いの大きさを表す対称度がある。…

※「位置偏差」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報