Calibration device for waveguide assembly welding

The utility model relates to the technical field of calibration devices, and provides a calibration device for waveguide assembly welding, which comprises a calibration table, first built-in cavities and a first screw rod, and the first built-in cavities are arranged on both sides inside the calibration table. According to the utility model, the pressing structure is arranged, and a certain pressure is applied to the waveguide assembly main body by using the pressing plate, so that the waveguide assembly main body can be more tightly attached to the end face of the waveguide connecting flange, and the auxiliary pressing operation of the waveguide assembly main body and the waveguide connecting flange can be completed; therefore, after the first calibration plate and the second calibration plate are used for calibrating the waveguide assembly main body and the waveguide connecting flange, if the applied pressure is large, the waveguide assembly main body and the waveguide connecting flange are prevented from i