HEIDENHAIN SW 54843x-03 DIN Programming - Manual (Page 72)

72 smart.Turn units
2.2 Units—Roughing
"Transverse roughing with direct contour input"
unit
The unit machines the contour defined by the parameters. In EC you
define whether you want to machine a normal or a plunging contour.
Unit name: G820_G80 / Cycle: G820 (see page 275)
Access to the technology database:
 Machining operation: Roughing
 Affected parameters: F, S, E, P
Contour form
EC
Type of contour
 0: Normal contour
 1: Plunging contour
X1, Z1 Contour starting point
X2, Z2 Contour end point
RC Rounding: Radius of contour corner
AC Start angle: Angle of the first contour element
(range: 0° < AC < 90°)
WC End angle: Angle of the last contour element
(range: 0° < WC < 90°)
BS Chamfer/radius at start
 BS>0: Radius of rounding arc
 BS<0: Section length of chamfer
BE Chamfer/radius at end
 BE>0: Radius of rounding arc
 BE<0: Section length of chamfer
BP Break duration: Time span for interruption of the feed. The
chip is broken by the (intermittent) interruption of the feed.
BF Feed duration: Time interval until the next break. The chip
is broken by the (intermittent) interruption of the feed.
Cycle form
P
Maximum infeed
I, K Oversize in X, Z direction (I: diameter value)
E Plunging behavior
 E>0: Plunging feed rate for declining contour elements.
Descending contour elements are machined.
 No input: The plunging feed rate is reduced during
machining of declining contour elements by up to 50 %.
Descending contour elements are machined.
H Contour smoothing
 0: With each cut along the contour (within the infeed
range)
 1: Contour smoothing with the last cut (entire contour);
retracts at 45°
 2: No smoothing; retracts at 45°
Further forms: see page 60