LNS Alpha ST320 S2 - Page 93

CHAPTER 8: OPERATION 8-15
ALPHA ST320 S2
P07: Safety setup
This parameter should be modified
if the part dimension has changed.
The minimum/maximum acceptable bar stock feeding / pusher
moving distance could be monitored by bar feed system under
different conditions. The bar feed system activates alarm
accordingly if those values are exceeded. Refer to chapter 9
for further information.
Fixed type lathe Swiss type lathe
Too short dist The minimum allowable bar fed distance from chuck open to close.
Too long dist_＊
The maximum allowable pusher
moving distance when chuck is
closed.
The maximum allowable
pusher/headstock moving distance
from chuck open to closed.
Too long dist_＃
The maximum allowable bar feeding
distance from chuck open to close
The maximum allowable pusher
moving distance when chuck is open.
P08: First feed setup
Position : (read only)
The current pusher position measured from sensor SQ2.
1st feed dist :
The bar stock’s first movement right after it’s loaded into the
bar feed system which proceeded by short pusher.
This movement is called FIRST FEED. Its function is to locate
the bar rear tip at the insertion position.
The FIRST FEED must correctly set so that the gap between
the bar rear tip and finger chuck is within 5mm after channel is
closed.
Insert position :
Insert position of the pusher. It must be adjust to ensure the
proper insertion of the bar stock into the finger chuck. (default:
33mm)
Extract position:
Pusher position for remnant extracting before the clamping
device closes and the pusher returns to the home position.
(Default: 50mm)
In auto mode, the extraction process is as follows:
1. The pusher go to position P08 “extract position”, clamp
device closes, Pusher go back to extract the remnant.
2. The pusher moves forward to position P08 “extract
position” + 100mm to push the remnant in the remnant box.
3. The pusher go back to P08 “extract position” and the
clamping device closes again to verify absence of remnant.