The invention relates to a pneumatic
drill. The pneumatic
drill comprises an
air filter and an
air pump. The pneumatic
drill is characterized in that the pneumatic drill further comprises a negative-pressure pneumatic drill and a
chip separator, wherein the negative-pressure pneumatic drill, the
chip separator, the
air filter, and the
air pump are sequentially connected into a whole through air pipes; the negative-pressure pneumatic drill comprises a
drill bit, a rotor blade holder, guide impellers, rotor impellers, a sleeve, a gas distribution disc, a casing
pipe, an elastic
retainer ring and an air
pipe connector, wherein the
chip separator comprises a lower housing, an upper housing, a chip accommodating
bottle and separating impellers. The pneumatic drill provided by the invention not only achieves the function of the pneumatic drill, but also achieves the function of automatic online
punching of deformable and soft hollow thin-walled materials; positions of the
punching points are accurate and the incision of
punching holes is round and uniform; chips and powders produced during the working process are less, so that the pneumatic drill has the
advantage of high efficiency and
environmental protection. The hollow
drill bit is adopted and each group of
cutting edges has the same shapes; the chips are discharged from the interior. Therefore, regardless of the
positive direction or the reverse direction, a
reversing valve is not required; the structure is simpler and more reliable.