The invention discloses an
ultrasonic vibration magneto-rheological
brush polishing machine for non-magnetic screws. The
polishing machine comprises a lathe body,
polishing fluid with
magneto-rheological fluid, an ultrasonic magnetic polishing
assembly and a pump body for spraying the polishing fluid. The ultrasonic magnetic polishing
assembly comprises a clamping
handle, a first connecting shaft arranged in the clamping
handle in a rotating mode, a motor for driving the first connecting shaft to rotate, an ultrasonic vibrator fixedly connected to the first connecting shaft, and a
brush plate fixedly connected to the ultrasonic vibrator. Magnetic conduction brushes are arranged on the
brush plate. A
magnetic field generator is fixed to the brush plate. The ultrasonic magnetic polishing
assembly can also adopt an ultrasonic vibrator fixed to the clamping
handle, a wheel brush rack connected with the ultrasonic vibrator, a second connecting shaft arranged on the wheel brush rack, a
magnetic field generator arranged on the second connecting shaft in a sleeving mode, and a brush plate arranged on the outer wall of the
magnetic field generator. The polishing
machine has the advantages that by means of an
ultrasonic generator and a magnetic conduction brush plate, extremely-
high surface roughness can be obtained, and elements can be ground in all directions without dead corners.