基于传递矩阵法的微细刀具临界转速分析  

Critical Rotational Speed Analysis of Micro-scale Cutter based on Transfer Matrix Method

作　　者：童浩[1] 刘佳[1] 李鑫[1] 王西彬[1] 

机构地区：[1]北京理工大学机械与车辆学院,北京100081

出　　处：《新技术新工艺》2014年第1期38-40,共3页New Technology & New Process

摘　　要：针对某微细刀具的实际结构特征,利用传递矩阵法计算了该微细刀具在不同刀尖质量、不同刀柄悬伸长度和不同刀径锥角下的临界转速,分析了刀柄悬伸长度和刀径锥角对微细刀具临界转速的影响规律。分析结果表明,刀柄的悬伸长度是影响微细刀具临界转速的主要因素。当转速接近临界转速时,可通过调节刀柄的悬伸长度改变微细刀具的临界转速,使切削加工处于安全的转速范围内。The paper aimed at the real structure characteristics of a micro-scale cutter, by using transfer matrix method, calculated the critical rotational speed of the micro-scale cutter with different tool nose quality, different tool shank extended length and different tool radius cone angle, and analyzed the effect regulation of the tool shank extended length and the tool radius cone angle to the critical rotational speed of the micro scale cutter. The results showed that the extended length of tool shank was the main factor to affect the critical rotational speed of the micro-scale cutter, and when the rotational speed was close to the critical rotational speed, adjusting the extended length of the tool shank can change the critical rotational speed of micro-scale cutter, and make the cutting under a safe rotational speed.

关 键 词：微细刀具 临界转速 传递矩阵法 悬伸长度 刀径锥角 

分 类 号：TG702[金属学及工艺—刀具与模具]