HEIDENHAIN SW 54843x-02 DIN Programming - Manual (Page 99)

HEIDENHAIN MANUALplus 620, CNC PILOT 640 99
2.5 Units—Dr
illing in C axis
"ICP tapping, C axis" unit
The unit machines a single tap hole or a tapping pattern on the face or
lateral surface. Using ICP, you define the tap holes as well as further
details.
Unit name: G73_ICP_C / Cycle: G73 (see page 316)
Use the retraction length for floating tap holders. The cycle
calculates a new nominal pitch on the basis of the thread depth, the
programmed pitch, and the retraction length. The nominal pitch is
somewhat smaller than the pitch of the tap. During tapping, the tap is
pulled away from the chuck by the retraction length. With this method
you can achieve higher service life from taps.
"Global" form
G14
Tool change point
 No axis
 0: Simultaneously
 1: First X, then Z
 2: First Z, then X
 3: Only X
 4: Only Z
 5: Y direction only
 6: Simultaneous with Y (X, Y and Z axes move on a
diagonal path)
CLT Coolant
 0: Without
 1: Circuit 1 on
 2: Circuit 2 on
SCK Safety clearance in infeed direction: Safety clearance in
infeed direction during drilling and milling operations.
BP Break duration: Time span for interruption of the feed for
chip breaking.
BF Feed duration: Time interval until the next break. The
interruption of the feed rate breaks the chip.
Further forms: see page 56
Access to the technology database:
 Machining operation: Tapping
 Affected parameter: S
Pattern form
FK
see page 58
NS Starting block no. of contour
Cycle form
F1
Thread pitch
B Run-in length
L Retraction length when using floating tap holders (default:
0)
SR Retraction speed (default: Shaft speed for tapping)
RB Return plane
Further forms: see page 56