In machining, vibration knife how to do?

The phenomenon of vibration knife in machining is caused by the following reasons: 1. spindle bearing clearance is large, resulting in spindle runout; adjust the bearing clearance or change the new bearings. 2. the workpiece is too rough, the surface is uneven, the amount of cutting is sometimes big and sometimes small, the cutting force will be sometimes big and sometimes small, and thus the vibration; the first sanding of the workpiece or the first time to process a. 3. the machine tool rotation speed, the amount of eaten, the amount of tool walking, the cutting force, these factors ** ** the same role coincides with the intrinsic vibration level frequency of the machine tool. * with the role of the inherent vibration flat frequency coincides with the machine tool. This time the whole machine will have a large vibration, knife shock is also very fierce; change the cutting amount. 4. tool elasticity, tool holder clamping force, and cutting force just constitute the frequency of vibration, will also cause local vibration; change one of them can be eliminated.