Lathe tool rest convenient for tool changing

The utility model provides a lathe tool rest convenient to change tools, which relates to the technical field of lathe tool rests and comprises a mounting base, a rotating shaft is fixedly connected to the inner surface of the mounting base, tool rest components are fixedly connected to the outer surfaces of the two sides of the mounting base, and locking components are fixedly connected to the left surfaces of the tool rest components. In the use process, the knife rest assembly and the locking assembly are used in cooperation, the push block on one side is pulled, the corresponding connecting rod relieves limiting of the hand wheel, then the hand wheel is held and rotated, and the two-way threaded rod can drive the two threaded sleeves to move on the surface of the two-way threaded rod in the face-to-face or opposite directions when rotating; and by means of the first connecting block and the second connecting block which correspond to each other, the two clamping blocks can correspondingly clamp or loosen