Programming manual
CNC 8070
CANNED CYCLES
G87. Rectangular pocket canned cycle.
10.
(SOFT V02.0X)
201
Basic operation:
1. If the spindle was previously running, it maintains the turning
direction. If it is stopped, it starts clockwise (M03).
2. Rapid movement (G0) of the longitudinal axis from the starting
plane (Zi) to the reference plane (Z).
3. Rapid movement (G0) of the longitudinal axis up to 1 mm off the
part surface.
The movement permits, as in the case of the figure, a fast approach
to the machining surface when the safety coordinate (Z) is far away
from the surface.
4. Penetration. The longitudinal axis penetrates into the part the
distance indicated by "B" and at the feedrate indicated by "V".
5. Milling of the pocket surface at work feedrate in the passes defined
by "C" up to a distance "L" (finishing pass) from the pocket wall.
It is carried out in the direction indicated by parameter "J".
6. Finishing milling, "L" amount, at the work feedrate defined by "H".
In order to obtain good part finish when machining the pocket walls,
the finishing passes are carried out with tangential entry and exit.
H Feedrate for the finishing pass. If not programmed or
programmed with a 0 value, it is carried out at the roughing
feedrate.
V Tool penetrating feedrate. If not programmed or programmed
with a 0 value, it is carried out at 50% of the feedrate in the
plane.
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