An Experimental Study on The Lateral Natural Frequency of Bandsaw Blades

Authors

  • E. Kirbach
  • T. Bonac

Keywords:

Saw velocity, span length, tension stress, pressure guides

Abstract

Two solutions for predicting the lateral natural frequency of bandsaw blades are experimentally verified for saw velocity, span length, and tension stress ("strain"). Both solutions are shown to be accurate provided that the effective span length of the guide system, which has been shown for pressure guides to exceed the distance between facing guide edges, is taken into account.

It was found that wheel rotation can cause resonance vibration in the backside section of the sawblade, where the blade extending from wheel to wheel is unsupported. This resonance vibration, however, can be avoided by installing a guide midway between the wheels.

References

Anderson, D. L. 1974. Natural frequency of lateral vibrations of a multiple span moving bandsaw. Report prepared for the Western Forest Products Laboratory, Fisheries and Environment Canada, Vancouver, B.C. 18 pp.nKirbach, E. and T. Bonac. 1978. The effect of tensioning and wheel tilting on the torsional and lateral fundamental frequencies of bandsaw blades. Wood and Fiber. 9(4):245-251.nMote, C. D. 1965a. Some dynamic characteristics of band saws. For. Prod. J. 15(1):37-41.nMote, C. D. 1965b. A study of band saw vibrations. J. Franklin Inst. 279(6):431-444.nMote, C. D. 1968. Dynamic stability of an axially moving band. J. Franklin Inst. 285(5):329-346.nSoler, A. I. 1968. Vibrations and stability of a moving band. J. Franklin Inst. 286(4):295-307.n

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Published

2007-06-28

Issue

Number 1 / Spring 1978

Section

Research Contributions

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