Multidirectional milling slotting device

The utility model provides a multidirectional milling slotting device which comprises a working platform, a backup plate and a clamping assembly installed on the backup plate, two guide rails are arranged on the working platform in parallel at intervals, and the backup plate is connected with the guide rails in a sliding mode through sliding blocks. Transverse sliding grooves are symmetrically formed in the two sides of the backup plate in the length direction, the clamping assembly comprises two sets of outer diameter clamping pieces used for clamping the outer diameter of a workpiece and two sets of inner diameter clamping pieces used for clamping the inner diameter of the workpiece, and the two sets of outer diameter clamping pieces and the two sets of inner diameter clamping pieces are arranged on the transverse sliding grooves in a sliding connection mode; a milling cutter protruding out of the surface of the working platform and used for milling is arranged between the guide rails; according to differen