| Damaged blades |
- Fast transfer speed, excessive amount of slotting
- Excessive protrusion of tool
- Inadequate stiffness of tool
- poor fixation of item
- Poor fixation of item
|
- Reduce transfer speed
- Reduce amount of slotting
- Reduce amount of protrusion
- Use minimum blade length
- Increase fixed stiffness
- Increase fixed stiffness
|
| Vibration occurred during cutting |
- Excessive primary outer relief angle
- Excessive protrusion of tool
- Improper cutting conditions
|
- Reduce primary outer relief angle
- Reduce the amount of protrusion
- Adjust cutting and transfer speeds
|
| Reduced cutting performance |
- Use unsuitable end mill
- Low outer inclination angle
- Rapid wear of cutting blades
|
- Use an end mill suitable for items to be cut
- Increase outer inclination angle
- Perform early regrind
|
| Sudden occurrence of wear |
- Excessive cutting speed
- Unsuitable outer inclination angle
- Upward cutting operation
|
- Reduce cutting speed, modify outer inclination angle
- Consider downward cutting operation
|
| Poor chip discharge |
- Small space for chip discharge
- Excessive wear on blades
- Excessive amount of slotting
- Low injection pressure or amount of cutting oil
|
- Reduce transfer speed and use an end mill with small number of blades
- Perform early regrind
- Reduce amount of slotting
- Increase injection pressure and amount
|
| Poor surface roughness |
- Fast transfer speed
- Rapid wear of cutting blades
- Excessive amount of slotting
- Low cutting speed
|
- Reduce transfer speed
- Perform early regrind
- Reduce amount of slotting
- Increase cutting speed
|
| Damaged during cutting |
- Fast transfer speed
- Excessive protrusion of tool
- Significant damage of cutting blades
- Excessive amount of slotting
|
- Reduce transfer speed
- Reduce amount of protrusion
- Perform early regrind
- Reduce amount of slotting
|
| Poor processed dimensions |
- Small number of blades
- Excessive cutting conditions
- Use of long blades
- Poor accuracy of machine or chuck
|
- Use an end mill with a greater number of blades
- Adjust cutting conditions, replace
- Use short blades, repair or replace machine or chuck
|
