In the paper, the machining characteristics of two dimensional ultrasonic
grinding(TDUG) are analyzed, and based on the analysis of the working locus of abrasive particle
under TDUG and mechanical performances of fine-crystalline ZrO2 ceramics, a theoretical model
of material removal rateMRRis proposed under TDUG with workpiece adhered to ultrasonic
vibration respectively from the orthogonal directions. The model shows that any increase of static
load, size of grain, work speed, number of effective dynamic abrasive particle, the amplitude and
frequency of tool or any decrease of fracture toughness property and hardness will result in the
increase of the MRR, and the theoretical model of the MRR is tested, meanwhile the paper draws
the conclusion that the surface quality under TDUG is superior to that under common grinding,
which is tested by the means of grinding of fine-crystalline ZrO2 ceramics.
This paper worked on two dimensional ultrasonic grinding system with workpiece
adhered to ultrasonic vibration. It analyzed the working locus of abrasive particle under two
dimensional ultrasonic grinding (TDUG), and emulated the working course, and gave the key
parameters affecting grinding efficiency and grinding locus’s characteristic under different grinding
parameters, and brought forward the cutting course between abrasive particle and workpiece under
TDUG belongs to an new rotating dynamic contact cutting model. At the same time, it put forward
the theoretically critical speed condition under TDUG to obtain the optimum grinding effect, and
verified good micro-feature of finished surface under TDUG by the means of grinding tests of nano
ZrO2 ceramics.
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