Superfinishing is a process in which a rotating workpiece is finished by a relatively soft stone with fine abrasive oscillating parallel to the workpiece surface. The stone typically oscillates at an amplitude of 1–4 mm and a frequency of 10–50 Hz, and it contacts the workpiece at light pressure, typically 0.1–0.2 MPa. The superfinishing process consists of three phases: (1) the cutting phase, which is characterized by a high material removal rate due to sharp cutting edges; (2) the transition phase, which is characterized by a decrease in the material removal rate due to dulling and loading of the stone; and (3) the finishing phasein which dulling and loading results in only slight or no material removal. In the subsequent superfinishing process, the loaded stone contacts the rough surface of the next workpiece to initiate self-dressing of the stone – providing sharp cutting edges – and the three phases described are repeated. In comparison with...
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