HEIDENHAIN CNC Pilot 4290 Pilot - Manual (Page 55)

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Safety clearance (drilling and milling cycles) G147
G147 defines the safety clearance for milling operations with
G840...G846. Parameter ”K” influences the safety clearance for drilling
operations (G71, G72, G74). G147 replaces the safety clearance set in
”;Machining parameter 2, ... – safety clearances.”
Parameters
I:
Safety clearance in milling direction
K: Safety clearance in approach direction (feed)
G147 replaces safety clearance set in the machining
parameters or that set in G47.
Switch off allowance with G50
G50 switches off allowances defined with G52/G39-
Geo for the following cycle.
Allo
w
ances,
saf
ety clear
ances
Safety clearance G47
G47 defines the safety clearance for the turning cycles: G810, G820,
G830, G835, G860, G869, G890; drilling cycles G71, G72, G74 and
milling cycles G840...G846. G47 without parameters activates the
parameter values (machining parameters 2, ... – safety clearances).
Parameters
P:
Safety clearance
G47 replaces safety clearance set in the machining parameters
or that set in G147.