Precision turning with instrumented vibration-damped boring bars

Abstract

The paper presents the theoretical background and experimental results with a new approach for achieving high accuracy in finish turning with slender tools. The approach is developed especially for high-accuracy turning with vibration-damped boring bars with a length-to-diameter ratio up to 14, and equipment with strain sensors for in-process measurement of tool deflection. The approach is developed from an established three-pass method commonly used for precision turning with conventional slender tools without integrated sensors. It is shown that strain sensors can be utilized to achieve high accuracy in internal turning operations.