HEIDENHAIN 548431-05 User Manual page 327

Teach-in | Thread and undercut cycles
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)
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 to the Start point
5 Start the cycle with the Input finished soft key, then press the
NC start key
HEIDENHAIN | MANUALplus 620 | User's Manual | 12/2017
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