Grooving cutter

The utility model provides a grooving cutter which comprises a cutter handle and a cutter body, the cutter handle comprises a main body part and a cutter frame part, the cutter frame part is provided with a cutter body mounting hole, the cutter body comprises an inserting part and a cutting part, the cutting part is provided with a blade, and the inserting part is assembled in the cutter body mounting hole in a guiding and sliding mode. The groove cutter further comprises a jackscrew for locking the inserting part; the tool body mounting hole is a blind hole formed in the side face of the tool rest part, a pushing piece mounting hole intersecting with the tool body mounting hole is formed in the tool rest part, a pushing piece is arranged in the pushing piece mounting hole in a sliding mode and used for pushing the inserting part, and a redirection slope is arranged at the corresponding end of at least one of the inserting part and the pushing piece. A threaded pushing piece used for pushing the pushing piece