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Research on the Digital Machining Simulation for Francis Hydro Turbine’s Blade

Author: YinYanChao
Tutor: LaiXiDe
School: West China University
Course: Fluid Mechanical Engineering
Keywords: Francis leaves Cutter path generation CNC machining simulation Axis machining
CLC: TK733.1
Type: Master's thesis
Year: 2006
Downloads: 207
Quote: 1
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Abstract


The turbine is the prime mover of the hydroelectric turbine runner blade manufacturing accuracy of the quality of its type surface safe, reliable and economic operation of hydropower units have a huge impact . The turbine runner blades are very complex sculptured surface body , \and manufacturing quality. In recent years , the turbine manufacturing industry has been exploring axis CNC machining of large leaves . CNC machining of the blade , still using the trial processing to verify and modify the processing procedures , resulting in lower processing efficiency , and higher cost . And digital processing simulation technology can be simulated on the computer the machine movement and part cutting process , is the most effective means to solve such problems . This paper focuses on the Francis leaves the multi-axis NC machining simulation technology , which relates to key technologies include: leaves five-axis cutter location trajectory planning and computing based on the three-dimensional shape and positioning of the processing requirements leaves ; ; five-axis machining the blade of the knife axis control technology ; turbine blade axis CNC machining simulation environment ; cutting simulation and interference testing , and post-processing techniques . UG and other software on the basis of these links and explore how to achieve large Francis turbine blade cutting simulation and digital processing of multi-axis machine tool motion simulation . Turbine blades five-axis machining simulation digitized the blade axis CNC process in a virtual environment mapping , CNC machining blades in the virtual environment before real manufacturing . Machining simulation , to check the correctness of the NC program , rationality , to avoid processing equipment with blades and jigs collision . Is to ensure the security of the the leaf processing technology system , to optimize the machining program , effectively guarantee the technical basis of the quality of the processed leaves . Blade machining simulation can be reduced

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CLC: > Industrial Technology > Energy and Power Engineering > Water, energy, hydraulic machinery > Hydraulic prime mover,turbine > The counterattack hydraulic prime mover > Francis turbine
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