摘要
利用振动信号分析仪及压电式加速度传感器,研究了数控车床在不同进给速度下刀具上下表面的振动响应,得到了刀具振动加速度信号的时域曲线及自功率谱密度曲线。研究表明:刀具上表面的振动能量远大于下表面,刀具上表面最大自功率谱密度所对应的振动频率约为150 Hz,下表面的振动频率波动较大。
By means of the analysis instrument of vibration signals and acceleration sensor, the vibration responses of the upper and lower surface of the cutting tool are tested in the turning process of the numerically controlled lathe under the different feed rate, and the time series curves and the self-power spectral density curves of the acceleration vibration signals of the cutting tool are obtained. The study indicates that ： the vibration energy corresponding to the upper surface of the tool is much larger than that of the lower surface, and the vibration frequency corresponding to maximum self- power spectrum density of the tool on upper surface is about 150 Hz, but the vibration frequency of the lower surface has a big fluctuation.
出处
《煤矿机械》
北大核心
2013年第10期63-65,共3页
Coal Mine Machinery
基金
国家自然科学基金(50974107)
江苏省"青蓝工程"(10QLD006)
江苏师范大学实验室建设与管理研究课题(L2011Y11)
关键词
刀具
振动响应
自功率谱密度
tool
vibration response
self-power spectrum density
作者简介
张强（1985-），江苏徐州人，现为江苏师范大学研究生．研究方向为结构动力学分析与仿真，电子信箱：zhangqiang2000．student@sina．com.
通讯作者：李顺才．
