AN EXPERIMENTAL INVESTIGATION OF CIRCULAR-SAW VIBRATION VIA A THIN-PLATE MODEL

This paper deals with important practical problems related to vibratio n reduction in a circular saw used for wood cut-offs. An investigation is made of the static and dynamic characteristics of thin plate struc tures as a model of a circular saw, to obtain fundamental knowledge to improve circular saw performance. The circular saw is represented exp erimentally by a thin rectangular plate clamped by two shims. The bend ing rigidity and damping capacity of a structure are measured for six different damping methods. The results are evaluated by a coefficient, which is introduced through Merritt's regenerative chatter vibration theory. The most effective thin plate structure is found to improve vi bration-proof capacity. This structure is easily applicable to an actu al circular saw.