摘要
现代加工技术的发展对机床的加工精度的要求越来越高。切削载荷下机床主轴的振动响应直接影响数控机床的加工精度。通过建立机床主轴的动力学模型,研究切削载荷下主轴的振动响应。通过建立主轴的动力学仿真模型,进行模态分析,进一步通过谐响应分析切削载荷下机床主轴的振动响应。分析结果表明,切削转速对主轴振动影响不明显,切削过程中切削力的大小是造成机床主轴振动变化的最主要原因,且切削力大小与主轴的径向振动振幅成线性关系。
The vibration response of the spindle for a machine tool under cutting loads, significantly has a direct impact on machining quality and efficiency. The vibration response is numericaly studied through the dynamic modeling for the loaded spindle. Dynamic modeling is combined with modal analysis, and harmon- ic response analysis is further conducted on the output. Results show that the cutting depth is the main factor that influences the vibration of a NC spindle.
出处
《组合机床与自动化加工技术》
北大核心
2014年第4期22-25,共4页
Modular Machine Tool & Automatic Manufacturing Technique
基金
国家自然科学基金(11172260)
浙江省教育厅科研计划资助项目(Y201224248)
浙江水利科技计划项目(RC1326)
关键词
切削载荷
机床主轴
振动响应
模态分析
cutting Loads
NC spindle
vibration response
modal analysis
