LNS GT 112-E, Instruction Manual

Page: 72 / 201

Chapter 7 GENERAL DESCRIPTION
7 - 17
GT 112-E
7.12 RETRACTION DEVICE (Option)
It is strictly prohibited to use the retraction system before the bar
feeder is anchored to the ground. Please read the safety instructions
provided at the beginning of this manual before handling the
following devices.
Before handling the retraction mechanism, make sure the interface
cables between the spindle and the bar feeder have enough slack.
7.12.1 Description
When a lathe is equipped with a bar feeder, certain elements (motors, spindle reduction tubes,
etc.) become inaccessible, and sometimes it is difficult, or even impossible, to proceed with their
maintenance. Changing spindle liners on fixed headstock machines could also be a challenge.
To facilitate these tasks, the bar feeder can be equipped with a retraction system, which allows
the operator to move it away from the lathe. The rigidity of the system guarantees a perfect
alignment when the bar feeder is in working position. Safety switches impede any handling as
long as the bar feeder is not in operational position.
7.12.2 Operation
Conditions:
- Bar feeder in MANUAL or STOP mode.
- No bar between the bar feeder and the lathe
- Pusher inside the bar feeder
- The area around the bar feeder must be clear
Procedure:
1. Loosen the 8 lock bolts (A) on the two stands. 4 bolts on each side of the bar feeder.
2. Loosen and remove the 4 lock screws (B) behind the two stands.
3. Pull the bar feeder back by hand as the upper part of the bar feeder slides easily on the
roller bearings. The safety switch SQ10 will engage (Refer to chapter 4.6)
4. After completing the maintenance operations, bring the bar feeder back in the forward
working position, secure with lock screw (B) and tighten the side screws (A) (max. 75 Nm).
A
B
A
B