刀具上下表面车削振动响应的试验研究  

Experimental Study on Turning Vibration Responses of Cutting Tool on Upper and Lower Surface

作　　者：张强[1,2] 李顺才[1] 黄昌华[2] 蔡存金[2] 

机构地区：[1]江苏师范大学机电工程学院,江苏徐州221116 [2]空军勤务学院,江苏徐州221000

出　　处：《煤矿机械》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)

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.

关 键 词：刀具 振动响应 自功率谱密度 

分 类 号：O329[理学—一般力学与力学基础] TP212.12[理学—力学]