Page 42 BB4500-BB5000 Operating Manual
The AFU will not stop until the pin is pushed in completely. To prevent
overfeeding, check that the stop arm is positioned correctly.
3.4.3 Automatic feed stop
The automatic feed stop feature (see Figure 3-14) stops the AFU at any point along
the leadscrew.
Do the following to use the automatic feed stop:
1. Clamp a stop arm onto the leadscrew at the position intended for the axial
feed to stop. (Assemblies are included for stopping in either direction.)
2. Check that the stop arm is positioned to press against the feed stop screw
assembly.
FIGURE 3-14. AUTOMATIC FEED STOP
When the axial feed box nears the stop arm, the stop arm will depress the feed stop
screw assembly to stop the axial feed.
Do the following to retract the tool head:
1. Place the feed box in NEUTRAL.
2. Hand crank the tool bit away from the workpiece.
TABLE 3-8. AUTOMATIC FEED STOP IDENTIFICATION
Number Component
1 Stop arm assembly
2 Feeding stops when the pin is pushed all the way in by the stop arm
3 Stop arm assembly
4 Pin