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Thread Millilng Troubleshooting and Solutions

THREAD MILLING


Type of Wear
    • ×
      Flank Wear
      Flank Wear
      Cause
      • High cutting speed
      • Chip too thin
      • Insufficient coolant

      Remedy
      • Reduce cutting speed
      • Increase feed rate and reduce radial passes
      • Check coolant pressure / flow direction
    • ×
      Fracture/Chipping
      Fracture/Chipping
      Cause
      • Vibration
      • High load on cutting edge

      Remedy
      • Check stability
      • Reduce feed rate
      • Add radial passes
    • ×
      Build up Edge
      Build up Edge
      Cause
      • Cutting speed too low
      • Insufficient coolant

      Remedy
      • Increase cutting speed
      • Check coolant pressure / flow direction
    • ×
      Thread Surface-Chatter Marks/Vibrations
      Thread Surface-Chatter Marks/Vibrations
      Cause
      • Feed rate is too high
      • Large profile
      • Thread length too long

      Remedy
      • Reduce feed rate
      • Add passes
      • Add radial passes
      • Reduce overhang
    • ×
      Thread Accuracy (GO/NOGO Gauge)
      Thread Accuracy (GO/NOGO Gauge)
      Cause
      • Tool deflection
      • CNC program error

      Remedy
      • Reduce feed rate
      • Add radial passes
      • Use ZERO compensation
      • Check CNC program
    • ×
      Insert/Tool Breakage
      Insert/Tool Breakage
      Cause
      • High load on the cutting edge
      • Unproper cutting conditions
      • Chip evacuation
      • CNC program error

      Remedy
      • Add radial passes
      • Adjust cutting conditions
      • Add sufficient coolant
      • Check CNC program
    • ×
      Tapered Thread
      Tapered Thread
      Cause
      • Tool cutting load
      • Tool overhang

      Remedy
      • Add radial passes and/or reduce cutting conditions
      • Clamp tool to the minimum overhang length
    • ×
      Short Tool Life
      Short Tool Life
      Cause
      • Unsuitable cutting conditions
      • Vibrations

      Remedy
      • Reduce overhang as short as possible
      • Check tool and workpiece clamping
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