Machining Cycles - HEIDENHAIN CNC PILOT 640 User Manual

4

Machining cycles

HEIDENHAIN recommends programming a fixed cycle as follows:
Insert the tool
Define the cutting data
Position the tool in front of the working area
Define the safety clearance
Cycle call
Retract the tool
Move to the tool change position
Danger of collision!
Some parameters are non-volatile, e.g. special feed rates or
approach and departure variants
With missing program steps (parameters are not redefined)
the control uses the last programmed values for all subsequent
machining operations. This may cause undesired constellations,
e.g. feed rate for finishing with recessing cycles.
Always use the recommended program structure
Define all relevant parameters for each machining operation
Typical structure of a fixed cycle
. . .
MACHINING
N.. G59 Z..
N.. G26 S..
N.. G14 Q..
. . .
N.. T..
N.. G96 S.. G95 F.. M4
N.. G0 X.. Z..
N.. G47 P..
N.. G810 NS.. NE..
N.. G0 X.. Z..
N.. G14 Q0
. . .
240
NOTICE
DIN/ISO programming | Programming in ISO Mode
datum shift
Define the speed limit
Move to tool change point
Insert the tool
Define the technology data
Pre-position
Define the safety clearance
Cycle call
If necessary, retract
Move to tool change point
HEIDENHAIN | User's Manual smart.Turn and DIN Programming | 12/2017