Theoretical analysis of bandsaw roll-tensioning

Abstract

Bandsaw roll-tensioning was theoretically analyzed by amplifying Aoyama's fundamental equations. In the analysis the accumulated amount of tension after several roll-stretching passes was expressed as the linear accumulation of the amount of tension at each roll-stretching pass. The same condition was applied for the expression of the accumulated amount of crown back. The relations between the distance from the gullet in the transverse direction of the bandsaw blade to the roll-stretching point and the distance from the gullet in the transverse direction of the bandsaw blade at which the amount of tension becomes maximum, minimum, or zero were clarified. To meet the requisites to adjust the amount of tension at an arbitrary distance in the transverse direction of the bandsaw blade or the amount of crown back, an adjusting procedure was developed. The process of bandsaw roll-tensioning can theoretically be controlled by this procedure.