Tech Support

 
TROUBLE SHOOTER - END MILLS
 
PROBLEMS
Poor Workpiece Finish
Chatter or Similar Noises
Splintering of Workpiece
Edge
Non Parallel or
 Uneven Surfaces
Poor Chip Clearance /
 Chip Clogging
End Mill Breakage
Extreme Flank Wear
Extreme Crater Wear
Breaks and Shelling Due to Thermal Shocks
Built up Edge
Lack of Rigidity
SOLUTIONS
Increase cutting speed
✓
      
✓
✓
      
✓
  
Reduce cutting speed  
✓
        
✓
✓
    
✓
Increase feed rate        
✓
  
✓
    
✓
  
Reduce feed rate
✓
  
✓
✓
✓
✓
  
✓
✓
  
✓
Reduce cutting depth
✓
  
✓
✓
  
✓
  
✓
✓
  
✓
Change cutter dia. And cut width        
✓
✓
        
✓
Check the use of cutting oil, wash swarf away
✓
✓
    
✓
  
✓
✓
  
✓
  
Increase clearance angle (radial relief)    
✓
✓
✓
✓
✓
✓
✓
✓
✓
Increase wedge angle (rake angle)    
✓
        
✓
✓
    
Increase no. of teeth
✓
  
✓
                
Reduce no. of teeth      
✓
✓
✓
        
✓
Select Larger Chip Space        
✓
            
Change shape of minor cutting edge
✓
  
✓
✓
    
✓
  
✓
    
Change radial run-out      
✓
        
✓
    
Change cutter stiffness, flute length (I/D ratio)    
✓
✓
  
✓
✓
  
✓
  
✓
Select Machine with higher power and stiffness    
✓
✓
        
✓
  
✓
Increase Helix Angle
✓
                    
Check workpiece setup  
✓
      
✓
  
✓
    
✓
Check Tool setup  
✓
      
✓
  
✓
    
✓
Reduce Overhang  
✓
      
✓
  
✓
    
✓
Check spindle play  
✓
      
✓
  
✓
    
✓
Try climb milling  
✓
          
✓
      
 
TROUBLE SHOOTER - DRILLS
 
PROBLEMS
Breaking of Drill
Outer Corner Break Down
Cutting Edge Chips
Lands Chip
Drill splits up centre
Drill will not enter work
Hole surface is rough
Oversized Hole
REASONS
Dull Point
✓
✓
✓
Drill has front taper due to wear
✓
Insufficient lip clearance on point
✓
✓
✓
Lip clearance too high
✓
✓
Drill point incorrectly ground
✓
Chip clogging
✓
✓
Spring or Backlash in drill press, fixture or work
✓
Feed too heavy
✓
✓
✓
✓
Cutting speed too high
✓
Improper cutting oil flow on cutting edges
✓
✓
Hard spots in worpiece material
✓
Oversize jig bushing
✓
Drill core dia. too big
✓
Fixture / Clamping not rigid
✓
Unequal angle / Unequal length of cutting edges
✓
Spindle run out
✓

 
   
 

End Mills

Drills 

Reamers 

Custom