Novel cutter clamping structure of drag saw

The utility model discloses a novel cutter clamping structure of drag saw, its include with the flat handle of a knife of a tool bit body coupling, set up on the reciprocating shaft and with the flat interior caulking groove that flat handle of a knife matched and sets up, and the suit is at reciprocal epaxial pressure cap, have and the external screw thread on the axial wall of reciprocating shaft, press the cap inner wall have with the internal thread that outer thread to match closed, the thread face of at least one has the inclination in reciprocating shaft and the pressure cap. Novel cutter clamping structure of drag saw is through the cutting ferrule cooperation of flat handle of a knife with flat interior caulking groove to cutter not hard up phenomenon of emergence under high -speed rotation the among the prior art has been avoided, consequently higher speed demand can be adapted to. Simultaneously, because the thread face of motor power axle has the inclination, through the internal thread of pressur