Tool Path Optimization of Contouring Operation and Machining Strategies for Turbo Machinery Blades

  ijett-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
© 2013 by IJETT Journal
Volume-4 Issue-5                      
Year of Publication : 2013
Authors : Rakesh Prajapati , Avadhoot Rajurkar , Vijay kumar Chaudhary


Rakesh Prajapati , Avadhoot Rajurkar , Vijay kumar Chaudhary. "Tool Path Optimization of Contouring Operation and Machining Strategies for Turbo Machinery Blades". International Journal of Engineering Trends and Technology (IJETT). V4(5):1731-1737 May 2013. ISSN:2231-5381. published by seventh sense research group.


Today many industries use CNC machines for production of turbo machinery components like turbine blades, impellers, rotors, propellers etc. Turbine blades are complex shapes and difficult to machine on CNC. Contouring operations are generally used for this purpose. This paper presents optimization of toolpath for turbine blades in vertical machining centre (VMC). Toolpath optimization of turbine blade using MasterCAM® software results in reduction of machining time. Different contouring toolpaths are simulated in MasterCAM® prior to machining of turbine blades. Cutting Parameters used for machining are spindle speed, feed, tool diameter, plunge - rate, and dep th of cut. Most of the research work is focused on cutter path generation with the main aim on reducing total cycle time. Both productive time and non - productive time s ( airtime , tool change time) are considered for optimization. Different toolpath generat ion methods are studied to select the best one to find out optimized cycle time. Different contour toolpaths being simulated are 2D, chamfer 2D, Ramp, Remachining and Oscillating. The objective of simulation is to generate the shortest tool - path for contou ring operation. Actual machining is done to validate the s oftware simulation time . Experimentation reveals that zigzag toolpath is more favorable than any other strategies for the machining of turbine blade for minimum cycle time. Ramp contour toolpath is more favorable than any other toolpaths.


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toolpath, optimization, simulation, strategie s.