Estimation of supporting fixture receptance for thin-walled milling

Abstract

Supporting fixtures are essential to suppress vibration in thin-walled milling. The trial-and-error basis method is still popular to determine suitable positions for fixture placement. This paper proposes a method to estimate the frequency responses of a workpiece with a fixture. The receptance coupling method is extended to represent the dynamics of supporting fixtures. The method allows the compatible use of receptance of a fixture between workpieces. The proposed method is applied to a thin-walled tube. The estimation results agree with the hammer testing results. Cutting tests showed that the fixture placed based on the proposed method can suppress vibration.