HEIDENHAIN CNC Pilot 4290 V7.1 - Manual (Page 593)

HEIDENHAIN CNC PILOT 4290 593
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Roughing – Machining analysis
TURN PLUS uses the PLVA/PLVI parameters to define whether a
roughing area is to be rough-machined longitudinally or transversely.
Roughing – Machining cycles
Machining analysis
Transverse/longitudinal ratio – external [PLVA]
„ PLVA <= AP/AL: Longitudinal machining
„ PLVA > AP/AL: Transverse machining
Transverse/longitudinal ratio – internal [PLVI]
„ PLVI <= IP/IL: Longitudinal machining
„ PLVI >= IP/IL: Transverse machining
Minimum roughing transverse length [RMPL] (radius value)
Defines whether transverse roughing is used for the front
transverse element of the outside contour of a finish part.
„ RMPL > l1: Without additional transverse roughing
„ RMPL < l1: With additional transverse roughing
„ RMPL = 0: Special case
Transverse angle variation [PWA]
The first front element is declared a transverse element when
it is within +PWA and –PWA.
Fixed cycles
Overhang length outside [ULA]
Relative length for external rough-machining enabling roughing
beyond the target position in longitudinal direction. ULA is not
considered when the cutting limitation is in front of or within
the overhang.
Overhang length inside [ULI]
„ Relative length for internal rough-machining enabling
roughing beyond the target position in longitudinal direction.
ULA is not considered when the cutting limitation is in front
of or within the overhang.
„ This parameter is used for calculating the drilling depth for
centric predrilling.
(see “Machining information” on page 558)
Retracting length outside [RAHL]
Retracting length for smoothing variants (H=1, 2) of roughing
cycles G810 and G820 for external machining (RAHL).
Retracting length inside [RIHL]
Retracting length for smoothing variants (H=1, 2) of roughing
cycles G810 and G820 for internal machining (RIHL).