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NaxoForce Troubleshooting Information

Troubleshooting: Fault Finding and Correction Guide
Remember: Large Contact Areas - require "slower" wheel speeds.
Small Contact Areas - require "higher" wheel speeds.

Rough
Surface
Vibration
Chatter
Cut Rate
Too Slow
Burning
Grinding
Cracks
Tool
Breaking
Poor Form
Holding
Try these recommendations:
.
X
.
X
X
X
.
Reduce the Wheel Speed.
(Machines < = 12 hp require 10 or 12 m/s for fluting)
X
.
.
.
.
.
X
Increase the Wheel Speed.
X
X
......
..
.
.
X
Check the balance of the wheel.
X
X
.
.
.
.
X
Check wheel mounting for looseness and "truing" for face or side run out. 
.
.
.
.
.
.
X
True wheel on spindle in the machine if possible. Most accurate but more down time)
X
X
.
.
.
.
X
Check the condition of the wheel hub, spindle, bearings and tool holder for wear.
.
.
.
X
X
X
X
Check that coolant reaches the actual grinding zone and is at the proper pressure.
.
.
.
X
X
X
X
Check for dirty coolant and its viscosity.
(Proper filtration and concentration)
.
.
X
X
X
X
X
Stick dress the wheel to "open" the cutting face.
(Soak stick in water 5 - minutes)
X
X
X
X
X
X
X
Insure that grit size of dressing stick is optimum for Diamond or CBN size.
.
.
.
X
X
X
X
Increase the coolant velocity.
.
.
.
X
X
X
.
Change from up - grinding, to "down" - grinding. 
.
.
.
X
X
X
.
Add an extra coolant nozzle to cool the carbide tool
.
.
.
X
X
X
.
Add a "high pressure - scrubbing" nozzle to clean swarf from wheel.
.
.
.
X
X
X
.
Add a "chiller" unit to the coolant.
X
X
.
.
.
X
X
Add steady rest to support the tool.
....
.
X
.
.
.
.
Increase the infeed of the wheel.
X
.
.
.
.
.
X
Use less stick dressing pressure.
X
X
.
.
.
.
.
Reduce the infeed of the wheel.
X
X
X
X
X
X
X
 
 
 
 
 
 
 
 
 
 
 
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