Investigation on bolt initial tensioning of inner-diameter saw blade

Abstract

Inner-diameter slicing based on a thin inner-diameter saw blade is one of the main hard and brittle material slicing methods. The inner-diameter saw blade needs to be tensioned for increasing its slicing stiffness and stability before working, and the tensioning quality affects the performance of subsequent material slicing directly and severely. In this paper, through finite element theoretical simulation and specialized experimental testing, the tensioning operation schemes are investigated systematically in the view of tensioning state and quality of the inner-diameter saw blade. By including mechanical equipment and electrical instruments, a specialized automatic experiment system is designed and manufactured with control and measurement function. Effects of bolts pre-tightening force, tightening sequence and rounds, and tensioning amount on the inner-diameter saw blade cutting-edge unevenness, lateral thrust stiffness, and transversal vibration response are investigated by theoretical simulation and experimental observation. A guideline on the optimization and improvement of initial tensioning is proposed for the inner-diameter saw blade practical engineering production.