The utility model discloses a kind of
impact drill bits of quick replacement, including
drill bit positioning seat, the
flange of one end of
drill bit positioning seat is connected on
impact electric drill, the other end of
drill bit positioning seat is rotatably connected with
drill bit mounting seat, the part of
drill bit mounting seat exposing drill bit positioning seat is inserted with drill bit body, the part of drill bit mounting seat in drill bit positioning seat is fixed with driving shaft, the output end of driving shaft is connected with
impact electric drill, limit component is installed on drill bit mounting seat, locking
assembly for driving limit component limit drill bit body is installed on drill bit positioning seat, screw sleeve, sleeve is moved in the process of thread rotation along drill bit positioning seat outer wall, drive connecting block to move downwards, so that inclined plane extrudes inclined block, locking block can be embedded in outer concave ring, can hinder connecting column to come out of drill bit mounting seat, reverse rotation sleeve, under the elastic force of reset spring, locking block will automatically separate from outer concave ring.