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TRAK Machine Tools
Southwestern Industries, Inc.
TRAK VMC Mills with ProtoTRAK RMX CNC Safety, Installation, Maintenance, Service & Parts List
3.1.3 Parts Have Incorrect Dimensions
Parts are being machined with dimensions that are different than those programmed. Typical accuracy
expectations should be:
•
Circles:
0.001” TIR over a 1.830” DIA (assumes cutting
Euclid block)
•
Positional Accuracy:
0.0002"
•
Repeatability:
0.0002"
Do the following Service Code:
•
Code 33
Software Identification. This is needed if you call SWI Customer Service
•
Code 123
Calibration
•
Code 128
Enter backlash compensation
3.1.3.1 Every Part Has the Same Error
Possible Cause
Check This
Machine Tool & Setup problem
Check and verify correct tools & setup.
Programming Error
In the program, look for common errors in programming
such as transposing numbers, tool diameters, and
pressing INC SET when ABS SET is meant. This is
especially suspected if the dimensional errors are larger
than a few thousandths. See the Controls Programming,
Operations and Care manual.
Configuration file that contains
calibration file that has been erased or
corrupted.
Make sure there are values for calibration under service
code 123. Default values would read al
l zero’s which
means the machine needs to be calibrated. A back up
copy of the configuration will be available at SWI. We will
need the machines serial number when you call us.
Backlash problem
Unusual high backlash values are causing slight variations
in your part dimensions. Values for backlash should be
less than 0.0005”.
3.1.3.2 The Dimensional Errors Are Random or Accumulate in Size
Over the Part Program Run
Possible Cause
Check This
X and 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
