Line gear precision detection device

The utility model relates to a linear gear precision detection device which comprises a horizontal rotary table. A clamping device used for clamping a gear is arranged on the horizontal rotary table, the clamping device is connected with a driving device, and the driving device is used for driving the gear to rotate in the circumferential direction; a three-dimensional workbench is correspondingly arranged on one side of the horizontal rotary table, a detection assembly is arranged on the three-dimensional workbench, and the detection assembly is used for abutting against the gear to conduct parameter detection. According to the utility model, the clamping device is arranged on the horizontal rotary table, the clamping device is used for clamping the line gear, the horizontal rotary table is used for driving the clamping device and the line gear to rotate circumferentially, and the height and the position are adjusted in cooperation with the detection assembly installed on the three-dimensional workbench, so