1. 4 th Production & 2 nd Mechatronics

3. Ch4… Repetitive machining sequences Standard fixed cycles Non-Standard fixed cycles Cycles devised by part programming Mirror Images Scaling Slash delete

4. Repetitive machining sequences Is used with a repetitive machining sequence in the same work piece, and it has two main types: Most common Repetitive Cycles Standard fixed cycle Non Standard fixed cycle

5. Repetitive Cycles Standard fixed cycle G-Code Number of basic common machining sequences have been standardized and identified by certain G-Code Non Standard fixed cycle Less common machining sequences to be standardized, machine’s manufacturer offers method to include such repetitive procedure

6. Repetitive Cycles Standard fixed cycle DrillingReamingBoringTapingCounterboringCountersinking Non Standard fixed cycle LoopFace MillingSlot MillingPocket MillingBolt Hole Circle

9. Main motions

10. PTP motion Start drilling cycle Rapid motion Drilling with feed R R Rapid Retract F Start point

11. G98: back to starting point ( default selection ) G99: back to rapid limit point R RG99 F Start point Rapid limit RG98

12. Main motions

17. Drill CyclePeck Drill Cycle

18. G81 Drilling N5 G90 G80 G20 G99 N10 M06 T6 N15M03S1300 N20G00X20Y20 N25Z10 N30 G81 R12 Z-40 F5 N35X40 N40X60 N45Y40 N50X40 N55X20 N60G80G00Z10 N65X0Y0 N70M05 N75M30

19. G81 G81 X10 Y10 R2 Z-20 F05

20. G82 Spot Facing, couterbore N5 G90 G80 G20 G99 N10 M06 T6 N15M03S1300 N20G00X20Y20 N25Z10 N30 G82 R12 Z-40 P1000 F5 N35X40 N40X60 N45Y40 N50X40 N55X20 N60G80G00Z10 N65X0Y0 N70M05 N75M30

21. G82 G82 X10 Y10 R2 Z-20 P1000 F05

22. G83 Peck Drilling N5 G90 G80 G20 G99 N10 M06 T3 N15M03S1300 N20G00X20Y20 N25Z10 N30 G83 R12 Z-40 Q10 F1 N35X40 N40X60 N45Y40 N50X40 N55X20 N60G80G00Z10 N65X0Y0 N70M05 N75M30

23. G83 G83 X10 Y10 R2 Z-20 Q6 F05

24. H h l H=h + l 60 D D/2

25. H h l H=h + l

27. Cycle devised by machine manufacturers to enhance the control system. It generally depends on machine type.

28. Loop: Reducing stock of material by making series of passing cuts

29. Loop:

30. Face milling Cycle: Reducing stock of material by making series of passing cuts

32. Sub-Programs: Is used to call other programs and to perform some operations then back again to main program M98: to call sub program M99: to back again to main program

33. Sub-Programs: Example O0001 “MAIN” N5 G90 G80 G20 G99 N10 M06 T3 N15 M03 S1300 N20 G00 X20 Y20 N30 M98 O0002 N35 Z10... N200 M98 O0004... N1000 M30 O0002 “1ST SUB” N20 G91 N30 G83 R12 Z-40 N35 X40 N40 X60 N45 G90 N50 M98 O0003 N55 M99 O0003 “2ND SUB” N20 G91 N30 G81 R12 Z-40 N35 X40 N40 X60 N50 G90 N50 M99 O0004 “1ST SUB” N20 G91 N30 G82 R12 Z-40 N35 X40 N40 X60 N50 G90 N50 M99

34. Is used to mirror a programmed shape M21: Mirror about X-axis M22: Mirror about Y-axis M23: Mirror cancel

35. Example Prepare a sub-program

36. Example Prepare the main program

37. Is used to scale a programmed shape G50: scale mode cancel G51: scale mode active G51 I…J…K…P…

38. Is used to scale a programmed shape I: location of scaling ref w.r.t X-axis J: location of scaling ref w.r.t Y-axis K: location of scaling ref w.r.t Z-axis I: Scale factor G51 I…J…K…P…

39. Different location of scaling point

40. (/) Is used to skip programming commands and exclude them from the running program, using slash symbol (/) and machine’s controller will ignore the line N5 G90 G80 G20 G99 N10 M06 T3 N15M03S1300 N20G00X20Y20 N25Z10 N30 G83 R12 Z-40 Q10 F1\N35X40\N40X60 N45Y40 N50X40 N55X20 N60G80G00Z10 N65X0Y0 N75M30