HEIDENHAIN 548431-05, User Manual, Page: 333 / 722

Teach-in | Thread and undercut cycles
5
HEIDENHAIN | MANUALplus 620 | User's Manual | 12/2017
333
GV : Type of infeed
Further information: "GV parameter: Type of infeed", Page 313
0: Const. mach. X-section
1: Const. infeed
2: EPL with distrib. of cuts
3: EPL w/o distrib. of cuts
4: MANUALplus 4110
5: Constant infeed (4290)
6: Const. w/ distrib. (4290)
GH : Type of offset
0: Without offset
1: From left
2: From right
3: Alternating left/right
A : Approach ang. (range: –60° < A < 60°; default: 30°)
A
< 0: Infeed on left thread flank
A > 0: Infeed on right thread flank
R : Rem. cut depth (only with GV = 4; default: 1/100 mm)
Q : Number no-load.
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)
HC : Shoe brake (machine-dependent)
DF : Miscellaneous function (machine-dependent)
Cycle run:
1 Pre-position the threading tool to the center of a thread groove
2 Use the
Take over position soft key to transfer the tool
position and the spindle angle to the Measured position ZC and
Measured angle C
parameters
3 Move the tool manually out of the thread groove
4 Position the tool
in front of
the workpiece
5 Start the cycle with the
Input finished
soft key, and press the
NC start key