CAJ | 학술논문

核岛AP1000蒸发器水室封头是当今世界应用最广、制造难度最大的第三代核电核心部件。重型铣削加工过程中的振动冲击与颤振，严重影响和制约了加工质量和生产效率。为研究水室封头重型铣削刀盘与主轴系统的固有振动特性，首先分析重型铣削加工振动产生特点，建立了专用机床（TK6920型数控落地镗铣床）与刀盘（Φ200R8圆弧刀片刀盘）的三维模型，进行有限元模态仿真分析；进而在生产现场进行模态实验，采集和处理数据并进行实验模态分析；通过对比实验数据与仿真模态分析结果，最后总结出重型铣削机床刀盘与主轴系统的固有振动特性，为研究重型铣削过程中振动特性奠定基础。
핵도AP1000증발기수실봉두시당금세계응용최엄、제조난도최대적제삼대핵전핵심부건。중형선삭가공과정중적진동충격여전진，엄중영향화제약료가공질량화생산효솔。위연구수실봉두중형선삭도반여주축계통적고유진동특성，수선분석중형선삭가공진동산생특점，건립료전용궤상（TK6920형수공락지당선상）여도반（Φ200R8원호도편도반）적삼유모형，진행유한원모태방진분석；진이재생산현장진행모태실험，채집화처리수거병진행실험모태분석；통과대비실험수거여방진모태분석결과，최후총결출중형선삭궤상도반여주축계통적고유진동특성，위연구중형선삭과정중진동특성전정기출。
The water chamber head of nuclear island AP1000 evaporator is one of the core components of the third-generation nuclear power plant.Such kind of head is the most widely-used,but is of much difficulty in manufacturing. The vibration and flutter in heavy milling process seriously affect and restrict the machining quality and production efficiency.In order to understand the vibration modal characteristics of the cutter and main shaft system in water chamber head milling process,its vibration characteristics in heavy milling process were analysed through establishing a three-dimensional model of machine tools (TK6920 CNC floor-type boring and milling machine)and cutter (Φ200R8 arc blade cutter),a finite element modal simulation was carried out and an experimental modal analysis in production field was followed.By summarizing and comparing the results of experimental and numerical analyses,the natural vibration characteristics of the cutter and spindle system of heavy milling machine were made clear.The results which lay a foundation for further study of vibration characteristics in heavy milling process.