Abstract
In this paper, a method to determine the optimal tool orientation to make a more perfect impeller blade surface using a five-axis flank milling machine is presented. Verification of surface geometric accuracy using a 3D coordinate measuring machine is also shown. A mathematical formula is derived which includes the parameters of tool and curved surface to calculate the appropriate tool orientation, whose direction is named the optimal tool orientation. The 3D CAD software Unigraphics (UG) is used to plot models which include the curved surface and the tools of optimal tool orientation and other orientations. The reasonable overlap between curved surface and tool is obtained (overcutting) by checking the interference from the UG, its tool orientation is the optimal tool orientation. According to the optimal tool orientation and position at all cutting points on curved surface, a cutting location source file is derived, which can transform into the NC code for the five-axis tool machine to make the centrifugal impellers of various types. These impellers are measured by using the 3D Coordinate Measuring Machine to verify blade to be free of flaws, and with accurate geometry and the tool, marks are removed from its surfaces.
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Chen, KH. Investigation of tool orientation for milling blade of impeller in five-axis machining. Int J Adv Manuf Technol 52, 235–244 (2011). https://doi.org/10.1007/s00170-010-2701-8
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DOI: https://doi.org/10.1007/s00170-010-2701-8