Front Tapping Cycle (G84) , Side Tapping Cycle (G88)

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Front Tapping Cycle (G84) , Side Tapping Cycle (G88)

3:52 AM Sivakumar

Front TappingCycle (G84)/SideTapping Cycle(G88):- Thiscycleperformstapping.In thistapping cycle, when the bottom of the hole has been reached, the spindleisrotatedinthereversedirection. Format:-G84 X(U)_ C(H)_ Z(W)_ R_ P_ F_ K_ M_ ;orG88 Z(W)_ C(H)_ X(U)_ R_ P_ F_ K_ M_ ; X_ C_ or Z_ C_ : Hole position dataZ_ or X_ : The distance from point R to the bottom of the holeR_ : The distance from the initial level to point R levelP_ : Dwell time at the bottom of a holeF_ : Cutting feedrateK_ : Number of repeats (When it is needed.)M_ : M code for C–axis clamp (when it is needed.) Explanations:-Tappingisperformedbyrotatingthespindleclockwise.Whenthebottom oftheholehasbeenreached,thespindleisrotatedinthereversedirection for retraction. Thisoperationcreatesthreads. Feedrateoverridesareignoredduringtapping.Afeedholddoesnotstop themachineuntilthereturnoperationiscompletedExamples:-M51 ; SettingC–axisindexmodeON M3S2000; RotatingthedrillG00X50.0C0.0; PositioningthedrillalongtheX–andC–axesG83Z–40.0R–5.0P500F5.0M31; Drillinghole1C90.0M31; Drillinghole2C180.0M31; Drillinghole3C270.0M31; Drillinghole4G80M05; CancelingthedrillingcycleandstoppingdrillrotationM50; SettingC–axisindexmodeoff