Z-axis servomotor integrated with power-off braking device

A Z-axis servomotor integrated with a power-off braking device belongs to the manufacturing field of semi-conductor chip equipment, and aims to solve the problems that the braking device of a conventional Z-axis servomotor can not respond quickly enough and has an insufficient braking torque. The Z-axis servomotor integrated with the power-off braking device consists of a Z-axis servomotor and the power-off braking device, wherein the power-off braking device comprises a ring-shaped side wall, a fixed wearing piece, a space positioning sleeve, a clutch gear, a clutch wearing piece, a movable wearing piece, an elastic device and a magnet coil, wherein the ring-shaped side wall is fixed on the end cover of the Z-axis servomotor; the magnet coil is sleeved on the outer side of a Z-axis motorshaft of the Z-axis servomotor; the elastic device is arranged between the movable wearing piece and the end cover of the Z-axis servomotor; the clutch wearing piece is sleeved on the outer side of the Z-axis motor shaft; the clutch gear is positioned between the Z-axis motor shaft and the clutch wearing piece and in meshed connection with the clutch wearing piece in a sliding manner; and the fixed wearing piece is sleeved outside the Z-axis motor shaft, and the space positioning sleeve is arranged between the fixed wearing piece and the end surface of the Z-axis servomotor. The Z-axis servomotor integrated with a power-off braking device is used for a Z-axis driving device of a silicon wafer transmission robot.