XYZ Machine Tools TRAK 2OP M11 Mill, Safety, Installation, Maintenance, Service And Parts List

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XYZ Machine Tools Ltd
TRAK  2
OP
Installation, Maintenance, Service & Part List Manual
4 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.
4.1 Machining Problems
4.1.1 Poor Finish
The part finish is marred with scallops or is very rough.
Run the following Service Codes and document values:
•
Code 33 - Software Identification. This is needed if you call XYZ Customer Service
•
Code 128 - Enter backlash compensation
Possible Cause Check This
Too much backlash entered for
code 128.
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, Vice,
or Fixture). Check the condition and type of cutter being used, type
of material, RPM and Feedrate, etc. See Machine Tool & Setup
Section 5.1
Inadequate or no Lubrication to
Ballscrews and Linear Guide
surfaces
Make sure all the Linear Guide 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 3.9
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 5.2
Linear Guide surfaces are scarred,
exhibit noise or vibration, or are
excessively worn
Visually check the condition of all the Linear Guide surfaces. For
machines that may have excessively worn Linear Guide surfaces, a
trained XYZ Engineer may need to inspect this area to determine if
they need to be replaced. Check lubrication to affected areas.
4.1.2 Circles Out of Round
Circles are not round within 0.05mm TIR over a 45mm dia. This is best measured by placing a dial indicator
in the spindle and sweeping around a milled circle (e.g. Euclid block part).
Do the following Service Codes and document values:
• Code 33 Software Identification. This is needed if you call XYZ Customer Service
•
Code 128 Enter backlash compensation
Possible Cause Check This
Machine geometry The geometry may be suspect if you find the circle is round if you
move the X and/or Y axis to find the true centre of the circle. The
tram and/or XZ or YZ perpendicularity may be suspect. Adjust
leveling feet if tram is found out of specification. A granite square
would be needed to check XZ or YZ perpendicularity.
Backlash values set too high or
low
Check code 128. Typically values for backlash should be less than
0.08mm. Reset values as necessary.