HEIDENHAIN CNC Pilot 4290 - Manual (Page 130)

4 DIN PLUS 118
Example of rear side machining with opposing spindle.
■ Part transfer with mirroring of the coordinate system
. . .
N.. G121 H1 Q1 Z.. D1
. . .
■ Part transfer without mirroring of the coordinate system.
. . .
N.. G121 H0 Q0 Z.. D1
. . .
Example of rear side machining with a spindle
The workpiece is rechucked manually to machine the rear face.
. . .
N.. G121 H1 Q0 Z.. D1
. . .
4.6.7 Oversizes, Safety Clearances
Safety clearance G47
Safety clearance for the turning cycles: G810, G820, G830, G835,
G860, G869, G890, the 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
Switch off oversize with G50
Switches off oversizes defined with G52/G39 Geo for the following
cycle. G50 is programmed before the cycle.
G47 replaces safety clearance set in the
machining parameters or that set in G147.
4.6 Machining Commands