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Estimation of supporting fixture receptance for thin-walled milling |
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| Affiliation: | 1. Precision Controls Laboratory (PCL), University of Waterloo, Waterloo, ON, Canada;2. IDEKO, Dynamics & Control Department, Elgoibar, Basque Country, Spain;3. Mechanical Engineering Department, University of the Basque Country, Bilbao, Basque Country, Spain;1. State Key Laboratory of Mechanical System and Vibration, Shanghai 200240, China;2. School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China |
| 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. |
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