Programming technology functions (cycles)
8.2 Rotate
Turning
Operating Manual, 03/2013, 6FC5398-8CP40-3BA1
327
Parameters Description Unit
α Insertion angle Degrees
VX Cross feed ∅ (abs) or cross feed (inc) - (only for ∇∇∇ and ∇ + ∇∇∇)
D Maximum depth infeed – (only for ∇ and ∇ + ∇∇∇) mm
U or UX Finishing allowance in X or finishing allowance in X and Z – (only for ∇ and ∇ +
∇∇∇)
mm
UZ Finishing allowance in Z – (only for UZ, ∇ and ∇ + ∇∇∇) mm
* Unit of feedrate as programmed before the cycle call
8.2.6 Thread turning (CYCLE99)
Function
The "Longitudinal thread", "Tapered thread" or "Face thread" cycle is used to turn external or
internal threads with a constant or variable pitch.
There may be single or multiple threads.
For metric threads (thread pitch P in mm/rev), the cycle assigns a value (calculated on the
basis of the thread pitch) to the thread depth H1 parameter. You can change this value.
The default must be activated via setting data SD 55212
$SCS_FUNCTION_MASK_TECH_SET.
Machine manufacturer
Please refer to the machine manufacturer's specifications.
The cycle requires a speed-controlled spindle with a position measuring system.
Interruption of thread cutting
You have the option to interrupt thread cutting (for example if the cutting tool is broken).
1. Press the <CYCLE STOP> key.
The tool is retracted from the thread and the spindle is stopped.
2. Replace the tool and press the <CYCLE START> key.
The aborted thread cutting is started again with the interrupted cut at the same depth.
Thread re-machining
You have the option of subsequently machining threads. To do this, change into the "JOG"
operating mode and carry out a thread synchronization.
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