Patent ID: 7909550

Claim:
A swivel spindle head with gear device driven by multiple torque motors, comprising: a tool spindle having a longitudinal axis, and having a first swivel shaft and a second swivel shaft being radially disposed at two opposite sides of the tool spindle while sharing a common axial line; a plurality of torque motors, radially disposed at a side of the tool spindle; and a reduction gear set, radially disposed at a side of the tool spindle that is opposite to that of the plural torque motors, being composed of a plurality of driving gears and a driven gear while each driving gear is further split into two gears; wherein, the amount of the plural driving gears is the same as that of the plural torque motors while enabling each of the plural driving gears to connect with a rotor shaft of its corresponding torque motor, and the same time, connecting the driven gear on the second shaft of the tool spindle.