Abstract: Three-dimentional modeling design and flow analysis of straflo turbine’s cone guide apparatus are made by using Unigraphics and Fluent software.And by UG/CAM interference check and simulated processing of the guide are conducted,producing tool position processing codes which are able to make the tool-processing more effective and give a better solution to special airtight of the guide when it is completely shut off.

Key words: straflo turbine, stapler guide apparatus, CFD, numerical control machining