基于小波分析的滚柱直线导轨副摩擦力波动分析  

Friction Force Fluctuation Analysis of Roller Type Linear Guideways Based on Wavelet Analysis

作　　者：马洪君[1] 宋现春[1] 姜洪奎[1] 许向荣[1] 高山龙 荣柏松 杜伟 MA Hong-jun SONG Xian-chun JIANG Hong-kui XU Xiang-rong GAO Shan-long RONG Bai-song DU Wei(School of Mechanical and Electronic Engineering, Shandong Jianzhu University, Jinan 250101 ,China Shandong Best Precision Co. ,Ltd. ,Jining Shandong 272071, China)

机构地区：[1]山东建筑大学,机电工程学院,济南250101 [2]山东博特精工股份有限公司,山东济宁272071

出　　处：《组合机床与自动化加工技术》2016年第9期24-27,31,共5页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：“高档数控机床与装备制造基础”国家重大科技专项(2012ZX04002013);国家自然科学基金(51375279);国家自然科学基金青年项目(51205235)

摘　　要：滚柱直线导轨摩擦力的波动对滚柱直线导轨的可靠性和稳定性有着重要影响。对采集的摩擦力信号进行多尺度小波变换,再经Hilbert变换和快速傅里叶变换,得到各尺度的频谱。结合滚柱直线导轨的结构及运行特征建立摩擦力数学模型。通过对实验数据与理论模型的对比,证明数学模型的合理性,分析得出承载滚柱数目的变化是滚柱直线导轨摩擦力产生波动的主要原因。The friction force fluctuation of roller linear guide has important influence on the reliability and stability of the linear guide. Multi-scale wavelet transformation was used in processing the acquired friction signal. Then frequency spectrum of each scale can be obtained,through Hillbert transformation and Fast Fourier transformation（ FFT）. With structure and operating characteristics of roller linear guide,the friction model was established. The friction model was proved to be reasonable,through the comparison of the experimental data and theoretical model. At last it was found that the main reason of friction force fluctuations was the change in the number of bearing roller.

关 键 词：滚动直线导轨 摩擦力 小波分析 

分 类 号：TH16[机械工程—机械制造及自动化] TG68[金属学及工艺—金属切削加工及机床]