Abstract
It is believed that the oscillation of the saw–wire significantly affects the flatness of the cutting surface in wire–saw slicing. This paper reports the natural frequency of steel saw–wire of 160μm in diameter and its logarithmic decrement under different wire set–up conditions without rotating guide rollers. In the measurement, three types of urethane rollers different in Shore hardness were provided, and the distance between guide rollers and the wire tension were changed. For the measurement, a measurement device that is composed of a laser diode module and a dual element photodiode was used. Through the measurements, it was found that the natural frequency of saw wire is almost independent of the Shore hardness of guide rollers and strongly depends on the distance between guide rollers and the wire tension. Moreover, it was found that the logarithmic decrement increases with the decrease of the distance between guide rollers, the increase of wire tension and decrease of Shore hardness of guide rollers.
