Computer Aided Geometric Modeling and 5-axis Milling of a Screw Propeller in a Single Setup: a Case Study
نویسندگان
چکیده
This paper presents a geometric modeling method and 5-axis CNC machining algorithm for the manufacture of screw propellers in one single setup. A novel approach for 5-axis roughing is developed and implemented in addition to further streamline finishing sequences. The toolpath is generated by dividing the propeller model into milling regions viz. the front & rear blade faces, the leading & trailing blade edges and the lateral hub surfaces between adjacent blades. Cutting tools for each region are then selected along with the appropriate tool orientation for 5-axis flank milling. The CL-data is acquired using Unigraphics and translated into NC code using a postprocessor for the Maho MH600E milling machine. The viability of the proposed method is verified by virtual machining on Vericut and actual machining on Maho MH600E.
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