HEIDENHAIN 548431-05, User Manual, Page: 355 / 722

Teach-in | Drilling cycles
5
HEIDENHAIN | MANUALplus 620 | User's Manual | 12/2017
355
Tapping radial
Select
Drilling
Select Tapping radial
This cycle is used to tap a thread on the lateral surface of a
workpiece.
Meaning of
Retract length : Use this parameter for floating tap
holders. The cycle calculates a new nominal pitch on the basis of
the thread depth, the programmed pitch, and the
Retract length
.
The nominal pitch is somewhat smaller than the pitch of the tap.
During tapping, the drill is pulled away from the chuck by the
Retract length . With this method you can achieve higher service
life from the taps.
Cycle parameters:
X , Z : Start point
C : Spindle angle – C-axis position
X1 : Start point drill (default: drilling starts from X )
X2
:
End point drill
F1 : Thread pitch (default: feed rate from tool definition)
B : Run-in lgth , to achieve the programmed speed and feed rate
(default: 2 * Thread pitch F1 )
SR : Return speed for enabling rapid retraction (default: same
spindle speed as for tapping)
L
:
Retract length
with use of floating tap holders (default: 0)
CB : Brake off (1)
SCK : Safety clearance
Further information: "Safety clearances SCI and SCK",
Page 180
T
:
Tool number
– turret pocket number
G14 : Tool change point
Further information:
"Tool change point G14", Page 180
ID
:
ID no.
S : Cutting speed or Constant speed
SP : Chip breaking depth
SI
:
Retraction distance
MT : M after T : M function that is executed after the tool call T
MFS : M at beginning : M function that is executed at the
beginning of the machining step
MFE : M at end : M function that is executed at the end of the
machining step
WP : No. of spindle – Displays which workpiece spindle is used
to execute the cycle (machine-dependent)
Main drive
Opposing spindle for rear-face machining
BW : Angle in the B axis (machine-dependent)
CW
:
Reverse the tool
(machine-dependent)