Tenon milling device for aluminum alloy doors and windows

The utility model discloses an aluminum alloy door and window tenon milling device which comprises a fixing frame, two sets of shielding assemblies used for preventing chippings from splashing are symmetrically arranged on the two sides of the bottom of the fixing frame, each shielding assembly comprises trapezoidal plates symmetrically and fixedly installed on the two sides of the wall face of the bottom end of the fixing frame, and the opposite faces of the trapezoidal plates are inclined faces. A cavity is formed in the trapezoidal plate, the upper end of the cavity extends to the top face of the trapezoidal plate, a forward and reverse rotation motor is installed at the bottom of the trapezoidal plate, a lead screw is fixedly connected to the output end of the forward and reverse rotation motor, the lead screw is sleeved with a lifting plate in a threaded mode, a threaded groove is formed in the position, corresponding to the lead screw, in the lifting plate, and the lead screw is in threaded connection w