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Automatic inspection of turbine blades using 5-axis coordinate measurement machine

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The complex geometric shape of turbine blades not only causes difficulties in fabrication but also makes it difficult to examine the part's precision when using a traditional 3-axis coordinate measurement machine (CMM). Generally speaking, one has to use a multi-axis CMM and follow the appropriately planned measuring paths to accomplish the task of precision measurement of the machined part. This article discusses the methodology of using a 3D geometric model of a turbine blade as the basis to generate interference-free measuring paths that are suitable for implementing on a CMM with three translational axes and two rotational axes. Through the use of the methodology proposed in this research, the goal of multi-axis precision inspection for any geometric design of turbine blade can be achieved.
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Keywords: 5-axis measurement; CMM; automated inspection; collision-free; turbine blades

Document Type: Research Article

Affiliations: 1: Department of Mechanical Engineering, De Lin Institute of Technology, Taipei, Taiwan, Republic of China 2: Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taiwan, Republic of China

Publication date: December 1, 2010

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