The invention relates to a
processing tool, in particular to a multifunctional impulse retracting hand
drill. The multifunctional impulse retracting hand
drill comprises a support, wherein the support is rotationally connected with a main shaft; the main shaft is sleeved with a driving
bevel gear; a driving disk is arranged on the support, and is rotationally connected with the support by a rotating shaft; driving teeth are arranged at the edge of the driving disk, and are engaged with the driving
bevel gear; a
clutch mechanism is arranged at the rotating shaft; a reverse rotating mechanism is arranged between the rotating shaft and the driving
bevel gear; an impulse bulge is arranged on the end face, close to the driving bevel gear, of the support; an impulse convex block is arranged on the end face, close to the support, of the driving bevel gear; a driven shaft is fixedly connected with a burr
polishing wheel; a containing cavity containing a
polishing wheel is arranged at one end, close to the support, of a shoulder sustaining rod; and the shoulder sustaining rod is in threaded connection with the support. The multifunctional impulse retracting hand
drill has the benefits that the multifunctional impulse retracting hand drill can realize reverse retracting at an
impulse frequency without changing the hand-operated direction, and ensures that a hand-operated velocity is stable.