| PROBLEM |
SUGGESTIONS |
| Chipping |
Check part rigidity
Verify speeds and feeds
Confirm concentricity of end mill in holder
Decrease ramp angle or slow down approach
Check coolant flow and location
|
Breakage |
Decrease feed rate
Decrease axial depth
Use shorter tool or stub holder
Resharpen earlier
|
Chattering |
Too light of a cut
Leave more stock for finish pass
Decrease axial depth
Adjust speeds and feeds
|
Part finish |
Confirm concentricity of end mill in holder
Decrease feed rate
Use different style of end mill
Check coolant flow and location
Check part rigidity
|
Burr |
Change end mill sooner / too much wear
Verify speeds and feeds
Increase spindle speed
Decrease feed rate
Use different style of end mill
|
Excessive noise |
Check part rigidity
Verify speeds and feeds
Too light of a cut
Confirm concentricity of end mill in holder
|
Tool life |
Work material harder than expected
Verify speeds and feeds
Recutting chips
Too light of a cut
Use different style of end mill
|
Wear |
Speed too fast
Too light of a feed
Confirm concentricity of end mill in holder
Verify speeds and feeds
|
Chip welding |
Verify speeds and feeds
Check coolant flow and location
Use different style of end mill
|
Chip packing |
Check coolant flow and location
Decrease axial depth
Adjust speeds and feeds
Use different style of end mill
|
Wall not straight |
Decrease feed rate
Decrease axial depth
Use shorter tool or stub holder
Use different style of end mill
|
