Brooks PreciseFlex DD 6-Axis Service Manual page 31

Brooks Automation
Part Number: 628651 Rev. A
Step
1.
Turn off the robot power and remove the AC power cord.
2.
Remove the curved rear cover of from the Z column.
Loosen the (4) M5 locking screws on the Z idler block.
3.
For the 1.42 m and 1.0 m Z travel robots, the tension screw and belt tension access hole can be
accessed at this point. For the 500 mm Z travel robot it is necessary to remove the 48VDC power
4.
supply in order to access the belt tension access hole and the tension screw. As an alternative, the
top cover and front cover may be removed to access the stage 2 timing belt from the front of the
robot. This is the easier method if tape seals are not installed.
Adjust the second stage Z belt tension per
page 1, tighten clamping screws, and replace parts. It may be helpful to move the carriage upwards
5.
on the taller robots so that the distance from the top idler pulley to belt attachment on the Z carriage
is 500 mm, in order to get a higher frequency on the belt, which can be easier to measure with the
tension meter. Use the 500 mm span in this case.
Copyright © 2024, Brooks Automation
Table 2-8: Tensioning the 2nd Stage J1 Belt
"Appendix E: Belt Tensions, Gates Tension Meter" on
Tensioning or Replacing the J2 (Z Column) Belts
Action
2. Service Procedures
24