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TRAK Machine Tools
Southwestern Industries, Inc.
TRAK TRL Lathe, ProtoTRAK RLX CNC Safety, Installation, Maintenance, Service & Parts List
3.2.4.1
Every Part Has the Same Error
Possible Cause
Check This
Programming Error
Programmed dimensions not correct. Check
absolute and incremental values.
Machine & Setup Related
See Machine Tool & Setup - 4.1
3.2.4.2
Errors are Random or Accumulate in Size over the Part Run
Possible Cause
Check This
Machining Setup
See Machine Tool & Setup - 4.1
Looseness in the Drive Train, ball nut loose in
yoke, split nut loose, yoke loose
See Mechanical Drive Train (X, Z) - 4.2
3.2.5 Threading Problems
Threads can be cut with and an unlimited number of pitches and up to 10 leads.
To reduce the relief area when threading up to a shoulder the spindle speed should be reduced as much
as possible. The slower the speed of the spindle, the closer the cutting tool can come to the end of the
programmed thread before it pulls out and retracts. If a nut must be turned all the way up to a
shoulder, machine a relief area behind the last thread.
NOTE:
No machine can thread up to a shoulder and instantaneously pull out.
Perform the following service code and procedure:
Code 133 Spindle encoder test
3.2.5.1
Cross Threading
Threaded parts are cross-threaded after completion of the threading event.
Possible Cause
Check This
Looseness in the Gib
Gib adjustment
See Gib Adjustment - Section 5.2.1
Looseness in the drive train
The drive train Diagnostics
See Mechanical Drive Train (X, Z) - Section 4.2
Failure of the spindle encoder
Run service code 133 to check if the encoder
counts.
Replace spindle encoder
See Spindle Encoder replacement - Section
5.1.9
3.2.5.2
Not Threading
The machine will not cut a thread at all.
Possible Cause
Check This
Spindle speed too fast
Slow down spindle speed.
Failure of the spindle encoder
Run service code 133 to check if the encoder
counts.
Replace spindle encoder
See Spindle Encoder replacement - Section
5.1.9
Broken or slipping encoder coupling
Check and replace as necessary
Broken or loose belt on 1630HSRX lathe only
Check belt tension
3.3 Problems Regarding the Motion of the Machine
