Detection tool for coaxiality of shaft parts

The utility model belongs to the precision detection technology, and particularly relates to a detection tool for coaxiality of shaft parts. The tool comprises a base body; the three claws are arranged on the upper surface of the base body in a radial sliding manner and are in a two-layer step shape; the common bearing is arranged at the first step of the three-jaw, and the outer circle of the common bearing protrudes out of the inner end face of the three-jaw; and the universal ball bearing is arranged at the second step of the three-jaw, the diameter of the section circle of the universal ball bearing is smaller than the diameter of the outer circle of the step of the part to be measured, and a plane formed by the centers of the three universal ball bearings is parallel to the lower surface of the base body. 本实用新型属于精密检测技术，具体涉及一种轴类零件同轴度的检测工装。该工装包括：基体；径向可滑动地设置在基体上表面上的三爪，所述三爪为二层台阶状；设置在所述三爪的第一台阶处的普通轴承，所述普通轴承的外圆凸出所述三爪的内端面；设置在所述三爪的第二台阶处的万向球轴承，万向球轴承的截圆直径小于待测零件台阶外圆的直径，三处万向球轴承球心形成的平面与所述基体下表面平行。