论文部分内容阅读
通过试验研究了切削颤振自动控制的稳定切削点在线识别方法。结果表明 ,连续改变机床主轴转速时振动响应的最低点即为不发生颤振的稳定切削点。不同刀具几何形状下 ,稳定切削点也可以由这种方法来准确识别。稳定切削点识别出以后 ,迅速调整主轴转速 ,以稳定切削点所对应的主轴转速进行切削 ,切削颤振就会得到有效控制。极限切深试验表明 ,以稳定切削点所对应的主轴转速进行切削可以提高机床的切削效率
The method of on-line identification of stable cutting point for the automatic control of cutting flutter was studied through experiments. The results show that the lowest point of the vibration response when the spindle speed is continuously changed is the stable cutting point without chatter vibration. Under different tool geometries, stable cutting points can also be accurately identified by this method. After recognizing the stable cutting point, quickly adjust the spindle speed to stabilize the cutting point corresponding to the spindle speed cutting, cutting chatter vibration will be effectively controlled. The limit cut depth test shows that cutting with the spindle speed corresponding to the stable cutting point can improve the cutting efficiency of the machine tool