Tool for measuring inner diameter size of tilting pad of dynamic pressure gas bearing

The utility model relates to a tool used for measuring the inner diameter of a tilting pad of a dynamic pressure gas bearing, the tool comprises a pedestal and a detection rod, the pedestal is provided with a pad placing hole used for placing a bearing pad to be measured and a detection rod placing hole used for placing the detection rod; the detection rod is of a semi-circular truncated cone structure with the radius uniformly changing in the axis direction and is provided with an arc surface and a plane opposite to the arc surface, the arc surface is used for being in contact with the inner arc surface of the detected bearing pad, and the plane is provided with arc radius size scales; according to the tool, the bearing pad to be detected is placed in the base, the inner radius of the bearing pad to be detected is defined through the penetration size of the detection rod, the inner radius of the bearing pad to be detected can be rapidly and accurately measured, and the tool can be matched with a rotor to for