镍基高温合金叶片类曲面砂带高效精密磨削机理与轨迹规划研究

项目名称： 镍基高温合金叶片类曲面砂带高效精密磨削机理与轨迹规划研究

项目编号： No.51505025

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 机械、仪表工业

项目作者： 樊文刚

作者单位： 北京交通大学

项目金额： 20万元

中文摘要： 镍基高温合金叶片类曲面广泛应用于航空发动机和工业燃气轮机等领域，数控砂带是实现其高效精密磨削的有效手段。针对该领域国内研究尚属空白、国外实施绝对保密的现状，本项目以镍基高温合金叶片类曲面数控砂带高效精密磨削为研究对象，围绕材料去除机理、工件表面完整性、砂带磨损机理、工艺参数多目标优化和叶片类曲面轨迹规划等方面开展基础科学研究，定量认识和掌握这一弹性磨削过程的复杂非线性作用机制，揭示工艺参数与材料去除率、磨削温度、表面完整性、砂带磨损等因素之间的关系规律，实现基于材料去除率、工件表面完整性和砂带寿命的工艺参数多目标优化，形成综合考虑几何精度、材料去除率、磨床动态特性、磨削力、砂带弹性接触特征和砂带磨损等多种因素的叶片类曲面高效精密轨迹规划系统理论和方法，为最终解决国内镍基高温合金叶片类曲面的数控砂带高效精密磨削问题提供理论支撑。

中文关键词： 镍基高温合金；叶片类曲面；轨迹规划；磨削加工；砂带

英文摘要： Blade surfaces with nickel-base superalloy are widely used in the aircraft engine, the industrial gas turbine, etc. CNC abrasive belt is an effective means to achieve the high efficiency and precision grinding. In view of the present situation in this field that the domestic research is blank, and the abroad implement strictly confidential, aiming at high efficiency and precision grinding by CNC abrasive belt for blade surfaces with nickel-base superalloy, this project focuses on the basic scientific research about material removal mechanism, workpiece surface integrity, abrasive belt wear mechanism, multi-objective optimization of process parameters and tool path planning of blade surfaces, with the purpose to: understand quantitatively and master the complicated nonlinear mechanism of the elastic grinding process; reveal the relationship between process parameters and material removal rate, grinding temperature, workpiece surface integrity and abrasive belt wear, etc; carry out the multi-objective optimization of process parameters based on material removal rate, workpiece surface integrity and abrasive belt life; form systematic theories and methods of tool path planning for high efficiency and precision grinding of blade surfaces based on multiple factors such as geometric accuracy, material removal rate, dynamic characteristic of grinding machine, grinding force, elastic contact characteristic of abrasive belt, abrasive belt wear, etc. This project can provide theoretical support to solve the problem of high efficiency and precision grinding by CNC abrasive belt for the domestic blade surfaces with nickel-base superalloy.

英文关键词： nickel-base superalloy;blade surfaces;tool path planning;grinding;abrasive belt