大长径比薄壁燃烧室壳体铣削加工振动分析与控制  

Milling Vibration Analysis and Control of a Large Length-Diameter Ratio and Thin-Wall Combustor Shell

作　　者：许开州 詹世涛[2] 刘子娟[2] 孙旻皓 李斌 

机构地区：[1]上海航天动力技术研究所,上海201109 [2]上海交通大学机械系统与振动国家重点实验室,上海200240

出　　处：《上海航天》2014年第B06期10-14,29,共6页Aerospace Shanghai

摘　　要：针对大长径比薄壁燃烧室壳体铣削加工振动问题,研究了柔性辅助支撑对加工减振的作用。建立零件铣削加工振动模型,用ANSYS软件对模型进行数值模拟,分析柔性辅助支撑状态下的系统模态与振动响应,以及不同夹具刚度系数对切削振动的影响。切削实验验证表明:振动幅度降低70%以上,减振效果良好。According to the vibration problem of the long-axis thin- wail cylindrical shell during milling process, the vibration damping effect of using a flexible auxiliary supporting system was studied in this paper. The vibration modal of the milling was established. The numerical simulation was done by ANSYS software and vibration response under different stiffness of the shell with flexible auxiliary supporting were obtained by establishing the finite element model. The vibration damping results from cutting experiments showed that the vibration Was reduced more than 300%

关 键 词：铣削 大长径比 薄壁 振动 模态 

分 类 号：TG54[金属学及工艺—金属切削加工及机床]