HEIDENHAIN iTNC 530 (34049x-08) Cycle programming - Manual (Page 94)

94 Fixed cycles: drilling
3.7 BA
CK BORING (Cy
cle
204, DIN/ISO:
G204)
 Workpiece surface coordinate
Q203 (absolute):
Coordinate of the workpiece surface. Input range
-99999.9999 to 99999.9999; alternatively PREDEF
 2nd set-up clearance Q204 (incremental): Coordinate
in the spindle axis at which no collision between tool
and workpiece (fixtures) can occur. Input range 0 to
99999.9999
 Disengaging direction (0/1/2/3/4)
Q214:
Determine the direction in which the TNC displaces
the tool by the off-center distance (after spindle
orientation). Input of 0 is not permitted.
 Angle for spindle orientation
Q336 (absolute):
Angle at which the TNC positions the tool before it is
plunged into or retracted from the bore hole. Input
range -360.0000 to 360.0000
Example: NC blocks
11 CYCL DEF 204 BACK BORING
Q200=2 ;SET-UP CLEARANCE
Q249=+5 ;DEPTH OF COUNTERBORE
Q250=20 ;MATERIAL THICKNESS
Q251=3.5 ;OFF-CENTER DISTANCE
Q252=15 ;TOOL EDGE HEIGHT
Q253=750 ;F PRE-POSITIONING
Q254=200 ;F COUNTERSINKING
Q255=0 ;DWELL TIME
Q203=+20 ;SURFACE COORDINATE
Q204=50 ;2ND SET-UP CLEARANCE
Q214=1 ;DISENGAGING DIRECTN
Q336=0 ;ANGLE OF SPINDLE
1 Retract tool in the negative ref. axis direction.
2 Retract tool in the negative minor axis direction.
3 Retract tool in the positive ref. axis direction.
4 Retract tool in the positive minor axis direction.