Specifications

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Southwestern Industries, Inc.
ProtoTRAK SMX K2, K3, K4 & Retrofit Safety, Installation, Maintenance, Service & Parts List Manual
3.0 Troubleshooting by Symptom
Use this section to begin the process of resolving a service problem. Each symptom type is
described in a few words and then more fully described in an explanatory paragraph. Following
this is a chart that directs in the most logical steps
3.1 Problems Relating to Machining Results
3.1.1 Poor Finish
The part finish is marred with scallops or is very rough.
Do the following Service Codes and document values:
• Code 33 Software Identification. This is needed if you call SWI Customer Service.
• Code 11 Measures backlash in the system (Only used on Dual Feedback systems)
• Code 12 Feed Forward Constant
• Code 127 Measures backlash in the system (for Z-axis on three-axis systems; not
used on Dual Feedback systems,)
• Code 128 Enter backlash compensation (for Z-axis on three-axis systems; not used
on Dual Feedback systems)
Possible Cause Check This
Too much backlash entered for code
128 or calculated with code 11.
Verify nothing is mechanically loose and the backlash
values are not higher than what physically is in the
system.
Machine Tool & Setup problem Check for any looseness in the setup (Tool, Tool holder,
Part, Vise, or Fixture). Check the condition and type of
cutter being used, type of material, RPM and Feedrate,
etc. See Machine Tool & Setup Section 4.1
Table, Saddle, or Knee Locks are locked Make sure the Table and Saddle Locks are unlocked.
Never use gib locks with a CNC machine.
Inadequate or no Lubrication to
Ballscrews and Way surfaces
Make sure all the Way surfaces are getting proper
lubrication. If not, check to make sure that the lube pump
is functioning properly. Also check for any pinched or
blocked oil lines. See Lubrication Section 4.1.3
X, Y, and knee Gibs are not adjusted
properly
Check the adjustment of the X and Y gibs. See X and Y
Gib Adjustments in Section 5.2.1.
X & Y-axis Drive Trains are loose Check Repeatability using the Repeatability and Positional
Accuracy procedure. Step by step, carefully inspect the
Drive Train for any looseness. It may be necessary to
disassemble and then reassemble the Drive Train. See
Mechanical Drive Train (X, Y) Section 4.2
Way surfaces are pocked, scarred, or
excessively worn
Visually check the condition of all the Way surfaces. For
machines that may have excessively worn Way surfaces
you may need to adjust the Gibs in this area. This will
affect performance when using the machine outside of
this area. Check lubrication to affected areas.