Situation 1：The Surface Finish Is Poor.

Fault cause: The tip of the tool is damaged, not sharp; Machine tool resonance and placement is not stable; The machine tool crawls; The processing technology is not good.

Solution:

①Tool wear or damage is not sharp, then re-sharpen the knife or choose a better tool to re-tool;  

②Machine resonance or placement is not stable, adjust the level, lay the foundation, fixed and stable. 

③Mechanical crawling causes the drag plate guide wear, screwball wear or loose, the machine should pay attention to maintenance, should clean the wire after work, and add lubricating oil in time to reduce friction. 

④Select coolant suitable for workpiece processing, in the case of meeting the processing requirements of other processes, as far as possible to choose a higher spindle speed.