冷锯机锯片的模态及谐响应分析  

Modal and Harmonic Analysis of Cold Saw Blade

作　　者：谭心[1] 于长永[1] 李璇[1] 赵静[1] 

机构地区：[1]内蒙古科技大学

出　　处：《工具技术》2016年第9期63-66,共4页Tool Engineering

基　　金：包头市重大科技发展项目(2012Z1006-2)

摘　　要：针对1800mm冷锯机锯片在锯切H型钢过程中出现剧烈横向振动并使锯片的使用寿命减短的问题,采用有限元法对不同厚度和夹盘直径锯片进行模态分析,分析结果表明通过改变夹盘直径能够改变锯片的固有频率,结合对锯片的谐响应分析,计算出不同频率下锯片的共振频率和共振峰值。研究表明,通过改变锯片的厚度和夹盘直径能够有效降低圆锯片的共振峰值同时为避开共振敏感区域提供合理的理论依据。Severe lateral vibration and shortening of the saw blade life occur on Ф1800mm cold saw blades in the process of cutting H-beam. Using the finite element method for different thickness and diameter chuck blade modal analysis and the results by changing the thickness and chuck diameter capable can change the natural frequency of the blade, har- monic response analysis to calculate the resonance frequency and resonance peak at different frequencies of the blade, stud- ies have shown that varying the thickness of the saw blade and the chuck diameter can reduce the resonance peak of circular saw blades effectively, at the same time provide a reasonable theoretical basis for avoiding resonance sensitive areas.

关 键 词：横向振动 固有频率 谐响应分析 共振频率 

分 类 号：TG333.22[金属学及工艺—金属压力加工] TH113[机械工程—机械设计及理论]