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Mark all as readTroubleshooting Threading
Problem:
Thread with Town Finish
Cause:
- Burrs
- Torn Finish
- Steps
Solutions:
- Use positive rake or full profile insert
- Increase coolant concentration
- Alter infeed
- Increase sfm
- Check machine "Z" travel axis
- Check insert form
- Check for correct shim in LT system
- Use CB inserts
Problem:
Chatter
Cause:
- Poor rigidy
- Incorrect Speed
- Insert movement
- Improper infeed
- Off centerline
- Wrong edge prep
Solutions:
- Minimize tool overhang
- Check for workpiece deflection
- Adjust sfm
- Check insert and clamp
- Use modified feed angle
- Verify that tool cutting position is at workpiece centerline
- Adjust hone level by ordering special insert
Problem:
Built-Up Edge
Cause:
- Speed too low
- Insufficient coolant
- Chip load
- Wrong edge prep
Solutions:
- Increase sfm
- Increase coolant concentration and/or flow
- Adjust infeed angle
- Increase depth of cut per pass
- Adjust hone level by ordering special insert
- Use cermet grade KT315
Problem:
Deformation
Cause:
- Wrong grade
- Speed too high
- Improper infeed angle
- Insufficient coolant
Solutions:
- Use a more wear-resistant grade (i.e. KC5010)
- Reduce sfm
- Alter infeed method/angle
- Increase coolant flow
Problem:
Chipping
Cause:
- Improper infeed
- Chip load
- Wrong grade
- Incorrect speed
- Poor rigidity
- Wrong edge prep
Solutions:
- Alter infeed to modified flank
- Adjust chip load
- Increase or decrease number of passes
- Eliminate spring passes
- Use tougher grade (i.e. KC5025)
- Increase sfm if chipping on trailing edge
- Decrease sfm if chipping on leading page
- Minimize tool overhang
- Check for insert movement/check clamp
- Check for possible part deflection
- Adjust hone size by ordering special insert
Problem:
Broken Nose
Cause:
- Heavy chip load
- Small nose radius
- Wrong grade
- Improper feed
- Wrong edge prep
Solutions:
- Decrease chip load
- Use large nose radius if allowable
- Use tougher grade (i.e. KC5025)
- Alter infeed to modified flank
- Adjust hone size by ordering special insert
Problem:
Flank Wear
Cause:
- Wrong grade
- Insufficient coolant
- Off centerline
Solutions:
- Use a more wear-resistant grade (i.e. KC5010)
- Increase coolant flow
- Check the centerline height of the tool (the smaller the diameter, the more critical the need for centerline accuracy)