HEIDENHAIN SW 68894x-02 - Manual (Page 536)

536 Organization mode of operation
8.2
Pa
ra
met
ers
Roughing – Machining cycles
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.
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).
Cutting depth reduction factor [SRF]
For rough-machining with tools machining opposite to the main
machining direction, the infeed value (cutting depth) is
reduced.
Infeed (P) for roughing cycles (G810, G820):
P = ZT * SRF
(ZT: Infeed value from technology database)