LNS Alpha 538 - Application and Position Parameters

CHAPTER 8: OPERATION 8-10
ALPHA 538/552
Application M-code & deceleration distance
M-code
During production time, the lathe issues an M-
Code signal (A4). The bar feed will push the bar
into position and emit a signal over the R2 relay to
reset the M-Code and the lathe will then be able to
continue working.
Deceleration distance
Distance in which the pusher as to slow down
before the stopper.
5.4. Position parameters
Position: End of bar
End of bar
(may be not visible)
The end of bar position determines the moment
when the barfeed enters the loading cycle.
Usually, the end of bar position is adjusted as
closely as possible behind the clamping system of
the lathe (approximately 5 mm or a 1/4" behind the
chuck jaws or collet pads).This will provide
minimum bar stock remnant.
Regardless of the length of the bars, or parts, the
end of bar position is always the same. In very
special cases, a different end of bar setting needs
to be selected.
Position: Top cut
Top-cut position
During the loading cycle, the bar is automatically
loaded and positioned into the spindle, outside the
clamping device of the lathe (chuck or actuator).
This positioning corresponds to a value (Z)
programmed by the operator, which is equal to the
distance between the measuring cell and the
position of the material in the lathe clamping
device.
With this system, the setting is the same for any
bar length.