HEIDENHAIN CNC Pilot 4290 V7.1 - Manual (Page 243)

HEIDENHAIN CNC PILOT 4290 243
4.22 Thr
e
ad Cy
cles
The cycle calculates the thread from the thread end point, thread
depth and the tool position. The main machining direction of the tool
determines whether an internal or an external thread will be
machined.
First infeed = Remainder of the division of thread depth/cutting depth.
You influence the thread cutting with the smooth threading (see
“Thread switch G933” on page 239).
H Type of offset for smoothing the thread flanks (default: 0)
„ H=0: Without offset
„ H=1: Offset from left
„ H=2: Offset from right
„ H=3: Tool is offset alternately from the right and left
„ Feed rate stop becomes effective only at the end of a
thread cut.
„ Feed rate and spindle override are not effective.
„ Make thread with G95 (feed rate per revolution).
„ Feedforward control is switched off.
Cycle run
1 Calculates the number of cutting passes.
2 Executes a thread cut.
3 Returns at rapid traverse and approaches for next pass.
4 Repeats 2 to 3 until the complete thread has been cut.
5 Executes air cuts.
6 Returns to starting point.
Parameters