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Theory And Processing Method Of YL Flue Gas Turbine Blade Processing System

Posted on:2021-01-10Degree:MasterType:Thesis
Country:ChinaCandidate:S H MuFull Text:PDF
GTID:2381330623983511Subject:Mechanical engineering
Abstract/Summary:PDF Full Text Request
Flue gas turbine blades are one of the core components of the flue gas turbine.Only by guaranteeing the processing quality of the core components can the flue gas turbine be operated for a longer period of time.At the same time,the operating efficiency can be improved to bring benefits to the factory production maximize.The moving blades are fitted from unrelated points on the spatially distorted variable section,which results in a more complex blade structure and a more complicated machining process.Therefore,designing a complete forming processing system theory and processing method for the YL type flue gas turbine blade processing has certain scientific research value and market value.This article takes the blade of YL flue gas turbine as the research object,and explores the system theory of blade machining,the reason and control method of vibration during machining.In this paper,for the complex blade modeling and high spatial distortion,it is proposed to use the NURBS curve modeling theory combined with the establishment of the sparse model to optimize the discrete points of the blade to complete the blade smoothness and construct a three-dimensional blade model.When exploring blade processing based on steady-state response,it is proposed to use blade modal analysis combined with harmonic response analysis method to analyze the vibration generated in the process to determine the weak parts of the workpiece,the frequency of applying the tool milling frequency and the loading milling force.Then the relevant parameters of the blade processing are obtained,and finally the method of controlling the processing vibration is obtained.After determining the processing theory and processing method.Utilize UG to complete the tool path generation,simulation,interference detection,obtain the correct tool machining path,generate NC pro gram,and then based on the VERICUT software,simulate the machining of the gas turbine blade to obtain the final complete G code.Finally,the generated G code is used for on-site processing at the factory,and further optimized based on the results of the processing site,and put into actual production.
Keywords/Search Tags:Moving blade, 3D surface modeling, Blade mode, Harmonic response frequency, Simulation processing
PDF Full Text Request
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