Outer diameter detection device for guide shaft processing

The utility model discloses an external diameter detection device used for guide shaft processing, comprising a pedestal, the upper end face of the pedestal is fixedly connected with two supporting plates, the two supporting plates are both provided with clamping assemblies, the pedestal is provided with a measuring assembly, the lower end face of the pedestal is provided with a moving assembly, and the moving assembly is provided with a clamping assembly. The moving assembly comprises a plurality of cushion blocks fixedly connected to the lower end face of the base, universal wheels are arranged on the end faces, away from the base, of the cushion blocks, and two limiting assemblies are arranged on the cushion blocks. According to the utility model, the guide shaft can be fixed by using the clamping plate, and a worker does not need to hold the guide shaft by hand for measurement, so that the measurement process is more stable, the accuracy of a detection result is improved, meanwhile, the device is more con