The invention relates to a chuck device for automatically cleaning auxiliary shaft iron chips. The chuck device comprises a chuck shell, a pushing rod
assembly, a rotating following converter, a spring, an outer connected converter, a
coolant assembly and an air intake
assembly, the chuck shell is clamped by a clamping motor and rotates along with the clamping motor, the pushing rod assembly is arranged in the chuck shell, one end of the pushing rod assembly is connected to a to-be-machined product in a propped mode, the rotating following converter is arranged at the
tail of the chuck shell,and the two axial ends of the spring are correspondingly connected to the pushing rod assembly and the rotating following converter. Compared with the prior art, the chuck device is used for being mounted on a precise digital-controlled
machine tool, a cooling device is connected into the special chuck device, during inner
machining of an auxiliary shaft hole, cooling can be conducted on a
machining position of a cutter in real time,
chip winding due to the high temperature is avoided, after auxiliary shaft
machining finishing, an inner pushing rod in a special chuck of the chuck device can push the iron chips left in the auxiliary shaft out, the air intake assembly can lead air pressure in, the iron chips in the device are effectively cleaned, and the chance of the secondary shaft iron chips clamping the product is greatly reduced.