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

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104
XYZ Machine Tools Ltd
TRAK  2
OP
Installation, Maintenance, Service & Part List Manual
a. Remove the four SHCS that secure the top bracket to the underside of the head, they can
be found between the column and the back of the bridge.
b. Remove the two SHCS that secure the bottom most segment to the Z-axis lower bearing
housing.
c. Lower the head, remove the upper sheet metal cover to access the upper (2) screws that
secure the Z-axis ballscrew cover (frame) to the column.
d. Raise the head and remove the four SHCS that secure the Z-axis ballscrew cover (frame) to
the column and remove the cover.
e. Slide the way cover out as an assembly
5. Disconnect the oil line that feeds lubrication to the Z-axis ballnut.
6. Rotate the Z-axis ballscrew and loosen the three set screws that secure the lower bearing locknut.
Remove the bearing locknut.
7. Remove the four SHCS that secure the lower bearing housing to the column, remove the housing
and set aside.
8. Jog the Z-axis downward and rest the bridge on a suitable and stable brace.
9. Shutdown the control and turn the power off to the machine.
10. Disconnect the electrical connection to the Z-axis brake.
11. Remove the motor per section 6.1.3.
12. Remove the SHCS that secure the brake. Remove the brake.
Warning!
Make certain that the bridge is resting securely before removing the brake!
13. Remove motor bracket casting.
14. Remove the two screws that secure the cushion to the ballnut, and remove the cushion.
15. With a 36” extension and a hex bit socket, remove the five SHCS that secure the ballnut to the
yoke.
16. Remove the four SHCS that fasten the bearing housing to the top of the column.
17. Remove the ballscrew by sliding it upward and towards the bridge allowing the ballnut to clear.
Disassembling the Z-axis Ballscrew
1. Remove the square, brake drive block (item 32, sheet 2) from the ballscrew
2. Remove the key.
3. Loosen the clamp nut (item 13).
4. Remove the bearing housing.
5. Remove the bearings.
Installing the Z-axis ballscrew
Note: Apply a thin film of oil on all screws to be torqued prior to installation
1. When installing the ballscrew, it is recommended that new bearings be installed at both ends.
2. Reassemble the upper end of the ballscrew.
a. Install the bearings and seal in the bearing housing.
b. Place the bearing housing on the ballscrew
c. Install the clamp nut and torque to 70Nm (50ft-lbs) and tighten the clamp screw torque to
7Nm (5ft-lbs).
d. Install the square drive block for the brake.
3. Install a new bearing into the lower bearing housing and install the housing onto the column.
4. Slide the ballscrew into the machine from the top of the column.
5. Wind the ball nut up or down until the bearing cap is flush with the mating boss of the column, and
ballnut flange is slightly (.100” or less) above the yoke of the bridge.
6. Install the four SHCS that secure the bearing cap to the column, torque to 24Nm (18ft-lbs).
7. Install the five SHCS that secure the ballnut to the bridge and tighten 75%. The bridge will pull
upward as the screws are tightened. Do not tighten the screws completely at this time.
8. Install the motor mounting casting.
9. Install the brake down over the square drive block.
10. Reinstall the coupling and motor. See section 6.13.
11. Jog the Z-axis upward to near the end of travel, this will align the ballnut with the bearing housing.
12. Attach the oil line to the ballnut.