五轴航空轮盘榫槽拉削装备静态精度计算与分析  

Calculation and Analysis of Static Accuracy of Five-axis Broaching Machine for Aero Turbine Disc

作　　者：宋平 林斌 唐阳 王翔 张顺琦[1] Song Ping;Lin Bin;Tang Yang;Wang Xiang;Zhang Shunqi

机构地区：[1]上海大学机电工程与自动化学院 [2]浙江畅尔智能装备股份有限公司

出　　处：《工具技术》2024年第10期136-142,共7页Tool Engineering

基　　金：大涵道比商用发动机关键零部件生产系统建设项目(TC220H05J)。

摘　　要：五轴航空轮盘拉削装备作为航空涡轮盘榫槽核心加工设备,其静态精度对榫槽加工质量有重要的影响。以五轴数控榫槽拉床为研究对象,基于多体运动学原理,考虑42项制造装配误差和随机定位误差,构建了五轴航空涡轮盘榫槽拉床静态几何误差运动学模型。运用齐次坐标变换方法推导了静态几何误差公式,采用蒙特卡洛方法仿真计算误差概率及分布。基于此结果,通过设定几何误差灵敏度指标,定量分析各项几何误差对静态精度的影响,获得6项影响静态精度的关键几何误差,为优化五轴航空涡轮盘拉床静态精度提供了一定的理论依据。As a core equipment for processing aero turbine disc tenon groove,the five-axis broaching machine for aero turbine disc has a significant impact on the machining quality of grooves due to its static precision.This paper takes a five-axis numerical control broaching machine as the research object,based on the multi-body kinematic principle.Considering 42 manufacturing and assembly errors and random positioning errors,a kinematic model which is used to calculate static geometric errors of the five-axis aviation turbine slot broaching machine is constructed.By using the homogeneous coordinate transformation method,the formula for static geometric error is derived.Monte Carlo method is used to simulate the probability and distribution of errors.Based on these results,by setting the geometric error sensitivity index,the quantitative analysis,which reveal the influence of various geometric errors on static precision is carried out.Six key geometric errors affecting static precision are obtained which provide a theoretical basis for optimizing the static precision of the five-axis aviation turbine slot broaching machine.

关 键 词：涡轮盘榫槽 拉削 齐次变换 误差模型 静态精度 

分 类 号：TG57[金属学及工艺—金属切削加工及机床] TH161[机械工程—机械制造及自动化]