88
TRAK Machine Tools
Southwestern Industries, Inc.
TRAK VMC Mills with ProtoTRAK RMX CNC Safety, Installation, Maintenance, Service & Parts List
4.
Use scale or caliper to measure distance from coupling edge on ballscrew side to the motor
casting and take note of the measurement as shown on figure 5.2.1c. Loosen coupling lock
screws on ballscrew side of coupling. Tighten jackscrew to separate coupling from shaft as
shown on figure 5.2.1c.
5.
Disconnect two electric cables to motor. Remove four SHCS screws holding motor to mill.
6.
Remove motor then remove coupler from motor shaft, examine the polyurethane spider element
for excessive wear (There should be no visible backlash) If it is suitable for reuse, install it onto
replacement motor shaft and set coupler distance from motor casting to coupler far edge using
your recorded measurement.
7.
Reinstall motor into mill.
8.
Install and tighten four SHCS to 30 ft lbs.
9.
Reconnect the power and encoder cables to the servo motor.
10.
Enable servos, perform Service Code 505, slowly jog X axis into X Axis hard stop. Back out one
ballscrew revolution and adjust home switch to trigger. Adjust index angle to 180 d/-
40 degrees at 0.5
00” from ha
rd stop.
WARNING!
After completing the replacement of the servomotor or ballscrew on the X or Y axis, service code 505
MUST be performed.
5.1.9.2 Y Axis Servomotor Removal and Replacement
1.
Jog the Y-axis toward the operator as far as possible, E-Stop machine and disconnect mill power.
2.
Y-axis access to the motor may require sliding the rear most way cover forward after removing
way covers from inside the machine.
3.
Rotate the coupler
until the slot is at twelve o’clock and you have equal access
to the jack screw
and the two clamping screws.
4.
Use scale or caliper to measure distance from coupler edge on ballscrew side to the motor to
motor casting and take note of the measurement as shown on figure 5.2.1c. Loosen coupler lock
screws on ballscrew side of coupling. Tighten jackscrew to separate coupling from shaft as
shown on figure 5.2.1c. Y-axis may require touching as a reference or use of a mirror to
complete this task.
5.
Disconnect two electric cables to motor. Remove four SHCS screws holding motor to mill.
6.
Remove motor then remove coupler from motor shaft, examine the polyurethane spider element
for excessive wear (There should be no visible backlash) If it is suitable for reuse, install it onto
replacement motor shaft and set coupler distance from motor casting to coupler far edge using
your recorded measurement.
7.
Reinstall motor into mill.
8.
Install and tighten four SHCS to 30 ft lbs.
9.
Reconnect the power and encoder cables to the servo motor.
CAUTION!
Do not touch the ball screw or linear ways with your bare hands. Wear latex or other suitable gloves
to protect precision surfaces from your hands.
