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动力刀架传动链动力学研究及影响因素分析 预览

Dynamic research and influencing factor analysis of transmission chain of power turret
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摘要 针对实际工况下动力刀架刀具驱动由于传动链不平稳啮合而产生较高振动噪声的问题,基于非线性动力学理论和虚拟样机技术,以AK33125动力刀架为研究对象,建立了刀具驱动模块6级7齿轮传动动力学模型,对动力刀架刀具驱动传动链进行了动力学研究,分析了相关参数对传动链动态响应的影响.结果表明:齿轮副间适当的阻尼有助于提高传动链的稳定性;较小的负载扭矩可以减小传动链的速度波动幅值及频率;传动链速度波动的频率及振幅会随着电机齿轮输入转速的增加而增大.在实际工况中,可通过适当改变润滑方式以增大传动链齿轮副间啮合阻尼、加注切削液以适当减小切削载荷、在不影响切削效率的前提下适当降低电机转速等措施,减小刀架的振动噪声. Aiming at the problem of high vibration and noise caused by unstable meshing of driving chain in the actual working condition of power turret,based on the theory of non-linear dynamics and virtual prototyping technology,taking AK33125 power tool holder as the research object,a 6-level and 7-gear driving dynamic model of tool driving module is established.The dynamics of tool driving transmission chain was studied,and the dynamic response of relevant parameters to transmission chain was analyzed.The results showed that proper damping between gear pairs could improve the stability of transmission chain;smaller load torque could reduce the amplitude and frequency of speed fluctuation of transmission chain;the frequency and amplitude of speed fluctuation of transmission chain would increase with the increase of input speed of motor gear.In actual working conditions,the vibration noise of tool holder can be reduced by changing lubrication modes properly to increase meshing damping between transmission chain gears,adding cutting fluid to reduce cutting load prop-erly and reducing motor speed properly without affecting cutting efficiency.
作者 杨果 王华 冯爱平 YANG Guo;WANG Hua;FENG Aiping(College of Mechanical and Power Engineering,Nanjing Tech University,Nanjing 211816,China;Department of Mechanical and Electrical Engineering,Yantai AutomotUe Engineering Professional Colhee,Yantai 264000,China)
出处 《轻工学报》 CAS 2019年第1期87-93,共7页 Journal of Light Industry
基金 国家重大科技专项项目(2014ZX04011031).
关键词 动力刀架 刀具驱动 传动链 振动噪声 power turret tool drive transmission chain vibration noise
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