Spindle Will Not Orientate Properly; Tool Will Not Clamp Or Unclamp In The Spindle - Southwestern Industries TRAK VMC2 Safety, Installation, Maintenance, Service And Parts List

4.2

Spindle Will Not Orientate Properly

Each time a tool change is performed, the spindle must orientate the spindle so the dogs line up with the
ATC fingers that hold the tool.
Do the following Service Codes and procedures:
• Code 510 - Spindle Setup, set spindle orientation
Possible Cause
The coupling that couples the motor to
the spindle has come loose.
The spindle encoder is not being read
properly.
Poor cable connection at spindle encoder,
AC drive or computer module.
Spindle Encoder Failure
Spindle drive failure
Computer module failure
4.3

Tool Will Not Clamp or Unclamp in the Spindle

The automatic draw bar uses pull fingers that close down and pull up simultaneously on the retention
knob to lock the tool holder into the spindle taper. These fingers act in the opposite fashion to release
the tool holder. Tools can be clamped and unclamped manually by pressing the green button on the
head.
Possible Cause
The control thinks the door is closed when
pressing the green button on the head.
No or Low Air Pressure
Are the tool holder(s) or the spindle taper
bore dirty?
The retention knob you are using is not
correct for this machine.
Loose Tool Holder Retention Knob
Belleville washers are damaged, worn or
fatigued.
The tool gripper inside the spindle have
become loose.
TRAK VMC2 Mills with ProtoTRAK RMX CNC Safety, Installation, Maintenance, Service & Parts List
This is only likely after a heavy crash on the machine. If
this happens you will need to perform service code 510 -
spindle orientation to resolve the issue.
There is an index mark on the spindle encoder that we are
reading to orientate the spindle. Check this by running
service code 510. Make sure parameter P2-2 in the AC
drive matches the value set in service code 510.
Check the cable connection at the spindle motor and AC
drive. Also check the cable that runs from the AC drive to
the computer module.
Verify that all the encoder signals are being sent to the AC
drive by verifying the LEDs for Channel A, B and Z are
turning ON and OFF when the spindle is rotating.
Replace drive.
Replace computer module. See section 6.1.5.4
The door must be open for the green button to work.
There is no air being supplied to the machine.
Is the pressure regulator set at 90 PSI?
Is there a leak in the pneumatic system?
Examine the spindle taper bore and the tool holder for
embedded chips and "tackiness" from excessive coolant
residue. Sometimes tools that are worn or have defects
on the taper will stick in the spindle.
See section 2 for an illustration of the correct retention
knob.
Check that the retention knob is tightened to the torque
value of between 70 and 85 ft lbs.
With a BT30 tension gage, check the pull strength of the
draw bar, it should be approximately 1000 lbs.
Check the adjustment of the tool gripper.
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TRAK Machine Tools
Southwestern Industries, Inc.
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