Operation Manual

HEIDENHAIN CNC PILOT 640 179
4.4 Turning cycles
Cut, longitudinal plunging—expanded
Select cut, longitudinal/transverse
Select plunge, longitudinal
Press the Expanded soft key
The cycle roughs the area described by the contour starting point,,
contour end point and plunge angle, taking the oversizes into
consideration.
 The tool plunges with the maximum possible angle,
leaving material remaining.
 The steeper the tool plunges into the material, the
greater the feed rate decrease (max. 50%).
Cycle parameters
X, Z Starting point
X1, Z1 Contour starting point
X2, Z2 Contour end point
P Infeed depth: Maximum infeed depth
H Contour smoothing
 0: With every cut
 1: With the last cut
 2: No finishing cut
I, K Oversize X, Z
R Rounding arc
A Plunge angle (range: 0° <= A < 90°; default: 0°)
W End angle—oblique cut at contour end
(range: 0° <= W < 90°)
G14 Tool change point (siehe Seite 140)
T Turret pocket number
ID Tool ID number
S Spindle speed/cutting speed
F Feed per revolution
BP Break duration: Time span for interruption of the feed. The
chip is broken by the (intermittent) interruption of the feed.
BF Break duration: Time interval until the next break. The chip
is broken by the (intermittent) interruption of the feed.
G47 Safety clearance (siehe Seite 140)
MT M after T: M function that is executed after the tool call T.