Siemens SINUMERIK 840D sl Operating Manual

Also see for SINUMERIK 828D Turning: Diagnostic manual Function manual Equipment manual Programming manual Operating manual

Hidden parametersThe following parameters are hidden. They are pre-assigned fixed values or values that canbe adjusted using setting data.Parameter Description Value Can be set in SDPL Machining plane Defined in MD52005G Change in thread pitch per revolution – (only for P = mm/revor in/rev):Without change in thread pitch0D0 Initial plunge depth for reworking the threads 0 mmVR Return distance 2 mm xMultiple threads 1 Thread Noα0 Starting angle offset 0°Machine manufacturerPlease refer to the machine manufacturer's specifications.10.2.7 Thread chain (CYCLE98)FunctionWith this cycle, you can produce several concatenated cylindrical or tapered threads with aconstant pitch in longitudinal and face machining, all of which can have different thread pitches.There may be single or multiple threads. With multiple threads, the individual thread turns aremachined one after the other.You define a right or left-hand thread by the direction of spindle rotation and the feed direction.The infeed is performed automatically with a constant infeed depth or constant cutting cross-section.● With a constant infeed depth, the cutting cross-section increases from cut to cut. Thefinishing allowance is machined in one cut after roughing.A constant infeed depth can produce better cutting conditions at small thread depths.● With a constant cutting cross-section, the cutting pressure remains constant over allroughing cuts and the infeed depth is reduced.The feedrate override has no effect during traversing blocks with thread. The spindle overridemust not be changed during the thread machining.Programming technology functions (cycles)10.2 RotateTurning376 Operating Manual, 05/2017, A5E40868721