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Dynamic response of guided spline circular saws vs. collared circular saws, subjected to external loads

ABSTRACT While collared saws are no longer widely used in North America for primary breakdown of logs to boards, these are common in most of European sawmills. In North America, guided spline circular saws are used for sawing of boards of varying dimensions. This paper presents a stability analysis of spinning disk, an idealized representation of circular saw, for collared and splined arbor saws, when subjected to radial and tangential in-plane forces. The governing linear equations of transverse motion of a spinning disk, subjected to edge-loads, are used in evaluation of the energy transfer from the applied loads to the disk vibrations. This analysis is used to examine the role of critical system components in the development of instability. Unique experimental results of dynamic behavior of both saw types are presented in calculation of critical and flutter instability speeds of the system.