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Thread Millilng Troubleshooting and Solutions
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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