%ODQN)LQLVKHGSDUW)LQLVKFRQWRXU0DFKLQLQJ=;˞ rFigure 10-4 α > 1: Boundary between unmachined and finished parts at the top%ODQN)LQLVKHGSDUW)LQLVKFRQWRXU0DFKLQLQJ=;˞ rFigure 10-5 α ≤ 1°: Boundary between unmachined and finished parts at the sideRequirementFor a G code program, at least one CYCLE62 is required before CYCLE952.If CYCLE62 is only present once, then this involves the finished part contour.If CYCLE62 is present twice, then the first call is the blank contour and the second call is thefinished-part contour (see also Section "Programming (Page 442)").NoteExecution from external mediaIf you want to execute programs from an external drive (e.g. local drive or network drive), yourequire the "Execution from external storage (EES)" function.For additional information, please refer to the following documentation:● SINUMERIK Operate (IM9) / SINUMERIK 840D sl Commissioning ManualRounding the contourIn order to avoid residual corners during roughing, you can enable the "Always round thecontour" function. This will remove the protrusions that are always left at the end of the contour,due to the cut geometry. The "Round to the previous intersection" setting acceleratesmachining of the contour. However, any resulting residual corners will not be recognized ormachined. Thus, it is imperative that you check the behavior before machining using thesimulation.Programming technology functions (cycles)10.3 Contour turningTurning456 Operating Manual, 06/2019, A5E44903486B AB