30-03-2011 дата публикации
Номер: CN0101992315A
Принадлежит:
The invention discloses an impact electric drill. The impact electric drill comprises a shell, a drive device and a clamp device, wherein the drive device is arranged in an accommodating chamber of the shell, outputs torsional motive power through a punching hole of the shell, which is penetrated through by a transmission shaft, and can output intermittent impact motive power in the rotating direction,when the drive device meets with resistance; the transmission shaft comprises a polygonal column section; the clamp device comprises an electric drill clamp and a first bearing; the electric drill clamp is provided with a sleeve cylinder which is provided with a combining hole corresponding to the polygonal column section of the transmission shaft, so that the sleeve cylinder and the transmission shaft can be closely matched without radial sliding; and the first bearing is sleeved on the sleeve cylinder, and is accommodated in the punching hole of the shell. Therefore, the impact electric ...
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