Yy. Chung et Ck. Sung, DYNAMIC BEHAVIOR OF THE BAND WHEEL MECHANICAL SYSTEM OF INDUSTRIAL BAND SAWS/, Journal of vibration and acoustics, 120(4), 1998, pp. 842-847
This paper presents an analytical and experimental investigation on th
e dynamic behavior of the band/wheel mechanical system of an industria
l metal-cutting band saws. In practice, this machine is equipped with
two pairs of roller bearings to twist the saw blade perpendicularly to
the surface of the workpiece. This results in the existence of the wh
eel tilt angle. The saw band is modeled as a finite moving beam span t
hat composes three consecutive segments: the middle straight segment,
that is, the cutting span, and the neighboring two segments that are c
onsidered as twisted beams. The deformation of the band must satisfy t
he continuity condition at the connections between segments. The equat
ions of motion governing the dynamic behavior of the saw band in axial
, torsional and transverse directions are derived using mired variatio
nal principle. The axial motion of the span couples linearly with its
torsional motion. The dynamic responses and the natural frequencies of
the beam are computed when parameters vary, such as the transport vel
ocity of the saw band initial tension, wheel tilt angle, and the lengt
h of the cutting span. Finally, an experimental study is performed on
an industrial band saw for the verification of the mathematical model
and the predictive capability proposed in this investigation Favorable
comparisons between the analytical and experimental results are obtai
ned.