基于峰值超越法的盘式刀库随机振动可靠性分析  

Random Vibration Reliability Analysis of Disc Magazine Based on The Peak Beyond Method

作　　者：夏仰球[1,2] 胡秋[1] 

机构地区：[1]中国工程物理研究院制造工艺研究所,四川绵阳621900 [2]中国工程物理研究院机床装备检测评价中心,四川绵阳621900

出　　处：《组合机床与自动化加工技术》2015年第2期58-60,64,共4页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：中国工程物理研究院预研基金资助项目(K846-13-HAK);四川省科技计划项目(2014GZ0119)

摘　　要：为了分析盘式刀库换刀动作过程中的随机振动对换刀精度的影响,建立了换刀系统无量纲化的动力学模型,利用该模型研究换刀系统在换刀过程中的随机振动。通过研究峰值超越作为失效准则评价振动可靠度的依据,从而发展了一种利用峰值超越法评估系统的振动可靠性的分析方法。并且利用Matlab仿真计算了某盘式刀库的振动可靠性,计算结果表明系统参数的随机性在可控范围内时可以保证系统的振动可靠性。In order to analyze the effect of random vibration on the accuracy of disc magazine in tool chan-ging process, dimensionless dynamics model of tool change system is established, using the model to study the random vibration of disc magazine in tool changing process. Through the study of peak beyond as basis failure criterion for evaluation of vibration reliability, a vibration reliability analysis method is developed by using the peak beyond method to evaluate the system reliability. And the vibration reliability of a disc maga-zine is calculated by Matlab simulation, the calculation results show that the randomness of system parame-ters in a controllable range can ensure the system vibration reliability.

关 键 词：盘式刀库 随机振动 可靠性分析 峰值超越法 

分 类 号：TH166[机械工程—机械制造及自动化] TG659[金属学及工艺—金属切削加工及机床]