Workpiece sprue removing line cutting tool

The utility model discloses a workpiece sprue removing line cutting tool which comprises a supporting plate capable of rotating horizontally, and a supporting mechanism, a positioning mechanism, a limiting mechanism and an anti-deflection base are arranged on the top face of the supporting plate. The supporting mechanism is used for supporting the bottom face of a workpiece. The positioning mechanism is used for positioning the placement position of the workpiece; the limiting mechanism comprises top face limiting assemblies and side face limiting assemblies, and each top face limiting assembly is correspondingly provided with a supporting assembly used for being supported on the bottom face of a workpiece. The top surface limiting assembly is used for pressing the top surface of the workpiece to limit the workpiece; the side face limiting assembly is used for limiting the protruding annular wall face of the bottom face of the workpiece. And a through notch is formed in the top surface of the anti-deflection