锥齿轮传动形性测试仪整机结构的动态特性分析  

Dynamic characteristic analysis for the structure of bevel gear drive shape tester

作　　者：林家春[1] 余启迪 王鹏[1] 石照耀[1] 岳会军 LIN Jia-chun;YU Qi-di;WANG Peng;SHI Zhao-yao;YUE Hui-jun(Beijing Engineering Research Center of Precision Measurement Technology&Instruments,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]北京工业大学北京市精密测控技术与仪器工程技术研究中心

出　　处：《机电工程》2019年第9期886-892,共7页Journal of Mechanical & Electrical Engineering

基　　金：国家重大科学仪器设备开发专项资助项目(2013YQ590395);国家自然科学基金资助项目(51775003)

摘　　要：针对锥齿轮传动形性测试仪进行齿轮传动误差、振动噪声测量时,其模态对测量结果产生影响的问题,对试验仪的动态性能进行了分析和测试。首先使用Solid Edge进行了结构建模,使用ANSYS Workbench进行了模态分析,并进行了谐响应分析;然后使用压电传感器和加速度传感器采集了动态响应数据,并利用DASP软件进行了实验模态分析,进行了不同工作状态下的振动数据采集;通过有限元仿真和实验模态得到了仪器的前6阶模态,证明了实验模态分析与软件仿真得到的模态分析结果基本一致;仿真得到了整体结构XYZ 3个方向的位移谐响应曲线;分析了不同工作状态下振动信号,发现了振动信号与仪器模态有明显联系;利用模态分析结果确定了仪器在工作条件下需要避开的共振频率区域,并通过振动实验确定了主动轴与机床连接部分为仪器动态特性的薄弱位置。振动实验分析结果表明:在仪器工作条件下,仪器第1阶固有频率应避开与齿轮转频、啮频相同的区域。Aiming at the influence of the modal of bevel gear transmission error and vibration noise on the measurement results,the dynamic performance of the tester was analyzed and tested.Firstly,Solid Edge was used to model the structure,and ANSYS Workbench was used for modal analysis and harmonic response analysis.Then piezoelectric sensor and acceleration sensor were used to collect dynamic response data,and experimental modal analysis was carried out by using DASP software to collect vibration data under different working conditions.The first six modes of the instrument were obtained by finite element simulation and experimental modal analysis.The results of experimental modal a-nalysis were basically consistent with those of software simulation.The displacement harmonic response curves of the whole structure XYZ in three directions were obtained by simulation.Vibration signals under different working conditions were analyzed,and it was found that there was a clear relationship between vibration signals and instrument modes.The resonant frequency region which the instrument needed to avoid under the working conditions was determined by the modal analysis results,and the connection between the active shaft and the machine tool was determined by the vibration experiment as the weak position of the dynamic characteristics of the instrument.The results of vibration ex-periments show that under the working conditions of the instrument,the first natural frequency of the instrument should be avoided in the same area as the gear frequency conversion and the rod frequency.

关 键 词：动态特性 有限元分析 谐响应 实验模态 模态分析 

分 类 号：TH122[机械工程—机械设计及理论] TH164