LNS QUICK SIX S2 - Lathe - Bar Feeder Adaptation; Spindle Reduction Tubes; Soft Grips

40 CHAPTER 4: OPERATION
MOVE S2
b) Soft grips
Wrong : The radius of the jaws is greater than
the radius of the bar. The jaws press
against only three points at 120°.
Correct : Modify the centers of the jaws to obtain
2 times 6 support clamping points
at 60°.
The efficiency of the bar guiding while in rotation in the lathe is determined by the clearance between the
spindle reduction tube and the rotating bar. The greater the clearance is, the more frequent the vibrations
are.
Using reduction tubes helps to decrease this clearance. Guiding is thus improved, but, in addition, the
insertion of the bar into the clamping device of the lathe is made much easier.
The inside diameter of the reduction tubes should be chosen in terms of the diameter of the bar (Ø of the
bar + 1 mm), but should always be larger than that of the diameter of the feeding pusher.
For inserting and removing the spindle reductions, move the bar feeder using the retraction device
(Chapter 4/ Point 3.1.1).
Spindle reduction tubes are available from LNS, upon request.