Siemens SINUMERIK 840D sl Operating Manual

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

Parameter Description UnitX1 Depth for speed reduction ∅ (abs) or depth for speed reduction in relation to X0 (inc) mmFR(only for ShopTurn)Reduced feedrate mm/revFR(only for G code)*SR Reduced speed rev/minX2 Final depth ∅ (abs) or final depth in relation to X1 (inc) mm* Unit of feedrate as programmed before the cycle call10.3 Contour turning10.3.1 General informationFunctionYou can machine simple or complex contours with the "Contour turning" cycle. A contourcomprises separate contour elements, whereby at least two and up to 250 elements result ina defined contour.You can program chamfers, radii, undercuts or tangential transitions between the contourelements.The integrated contour calculator calculates the intersection points of the individual contourelements taking into account the geometrical relationships, which allows you to enterincompletely dimensioned elements.When you machine the contour, you can make allowance for a blank contour, which must beentered before the finished-part contour. Then select one of the the following machiningtechnologies:● Stock removal● Grooving● Plunge-turningYou can rough, remove residual material and finish for each of the three technologies above.NoteStarting point or end point of the machining outside the retraction planesFor programs with contour machining from earlier software releases, for an NC start, it ispossible that one of the alarms 61281 "Starting point of machining outside retraction planes"or 61282 "End point of machining outside retraction planes" is output.In this case, adapt the retraction planes in the program header.Programming technology functions (cycles)10.3 Contour turningTurningOperating Manual, 05/2017, A5E40868721 383