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CNCShop

Troubleshooting Cutting Problems


For every problem there is a possible cause and a solution.

Here are some typical problems that you may encounter and possible solution for each problem. 

Problem

Cause

Solution

Tool Breakage Heat buildup due to incorrect tool selection Use correct tool for material being cut
  Heat due to inadequate chip removal Use up spiral tool to help in chip removal
  Too high a plunge rate Reduce plunge rate
  Blunt tool Replace tool
  Tool runout Tighten tool in collet or if necessary change collet
  Worn collet Replace collet
  Too high a feed rate Reduce feed rate
  Too high a chip load Reduce feed rate or increase RPM or change tool to one with more flutes
  Vibration Improve workpiece hold down to machine bed
  Tool not fitted correctly in collet Re-fit tool in collet ensuring at least 80% of collet length is used
  Tool deflection Reduce feed rate but if possible use larger diameter tool
Poor cut finish due to chip rewelding to cut edge No coolant Use mist coolant or cold air gun
  Blunt tool Replace tool
  Too slow a feed rate Increase feed rate
  Incorrect tool selection for material Choose correct tool for material being machined
  Heat due to inadequate chip removal Use up spiral tool
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