The invention discloses an ultrasonic
laser composite dressing device for a superabrasive
grinding wheel. The ultrasonic
laser composite dressing device is mainly formed by an
ultrasonic vibration dressing
system, a
laser transmitting
system and a lathe
bed. A
laser transmitter transmits energy to a laser focusing head with a focusing head fixing and adjusting device through optical fibers,
laser beams are focused during work to heat the rotating
grinding wheel in front of a dressing point at proper
energy density for proper
heating time, an
ultrasonic generator transmits an ultrasonic frequency
signal to an ultrasonic
transducer, the ultrasonic frequency
signal is converted into
mechanical vibration through the
transducer to be transmitted to an amplitude-change pole,
waves, generating
longitudinal vibration, of the amplitude-change pole will be decomposed at the position, where
a diamond slot is formed, of the small end, the vibration type involves
longitudinal vibration and
bending vibration, composite elliptical
ultrasonic vibration is formed at the point of
a diamond dressing
stylus for dressing, and after the dressing
stylus completely disengages from the
grinding wheel, the dressing
stylus will be moved to the position where dressing is started for the next time and starts dressing for the next round. In the dressing process, under the recombination action of
ultrasonic vibration and laser
auxiliary heating, removal of partial materials of the
grinding wheel is changed from brittle removal into plastic removal,
cutting force is reduced, abrasion to the dressing stylus is reduced, and the dressing efficiency and dressing result are improved.