G AND M PROGRAMMING FOR CNC MILLING MACHINES

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Topic:

1. Introduction

2. What is CNC?

3. Composition of a Part Program

4. Main Program Structure

5. Sub Program Structure

6. Sub Program Commands - General Notes

7. Sub Program Repeat Command

8. Billet Definition

9. Program Numbering and Saving

10. Program Block Numbering

11. Block Configuration

12. G Codes (Preparatory Functions)

13. Tool Movement

14. Feed Function

15. M Codes (Miscellaneous Functions)

16. Spindle Speed Function (Cutting Speed)

17. Tool Function

18. Tool Compensation (Tool Offset)

19. Absolute and Incremental Co-ordinates

20. Optional Block Skip

21. Tutorials and Comments

22. G Codes - Introduction

23. List of G Codes supported by

24. GØØ (Rapid Positioning/Traverse)

25. GØ1 (Linear Interpolation)

26. GØ2 & GØ3 (Circular Interpolation)

27. GØ4 (Dwell)

28. G2Ø & G21 (Imperial /Metric Data Input)

29. G28 (Reference Point Return)

30. G4Ø, G41 & G42 (Cutter Compensation)

31. G73-G89 (Canned Cycles)

32. G73 (High SpeedPeck Drilling)

33. G74 (Counter Tapping)

34. G76 (Fine Boring)

35. G8Ø (Canned Cycle, Cancel)

36. G81 (Drilling - Spot Boring)

37. G82 (Drilling - Counter Boring)

38. G83 (Deep Hole Peck Drilling)

39. G84 (Tapping)

40. G85 (Boring)

41. G86 (Boring)

42. G87 (Back Boring)

43. G89 (Boring)

44. G Codes - Program Example Using Canned Cycles

45. G9Ø (Absolute Zero Command)

46. G91 (Incremental Command)

47. G94 (Feed per Minute)

48. G95 (Feed per Revolution)

49. G98 (Return to Initial Level)

50. G99 (Return to R Point Level)

51. G17Ø-G173 (Circular/Rectangular Pocket)

52. G17Ø & G171 (Circular Pocket Example A)

53. G17Ø & G171 (Circular Pocket Example B)

54. G17Ø & G171 (Circular Pocket Example C)

55. G172 & G173 (Rectangular Pocket Example A)

56. G172 & G173 (Rectangular Pocket Example B)

57. G172 & G173 (Rectangular Pocket Example C)

58. M Codes - Introduction

59. List of M Codes Supported by

60. MØØ (Program Stop)

61. MØ1 (Optional Stop)

62. MØ2 (Program Reset)

63. MØ3 (Spindle Forward)

64. MØ4 (Spindle Reverse)

65. MØ5 (Spindle Stop)

66. MØ6 (Automatic Tool Change)

67. MØ8 (Coolant On)

68. MØ9 (Coolant Off)

69. M1Ø (Vice Open)

70. M11 (Vice Close)

71. M13 (Spindle Forward and Coolant On)

72. M14 (Spindle Reverse and Coolant On)

73. M2Ø (ATC Arm In)

74. M19 (Spindle Orientation)

75. M21 (ATC Arm Out)

76. M22 (ATC Arm Down)

77. M23 (ATC Arm Up)

78. M24 (ATC Drawbar Unclamp)

79. M27 (Reset Carousel to Pocket One)

80. M25 (ATC Drawbar Clamp)

81. M3Ø (Program Reset and Rewind)

82. M32 (Carousel CW)

83. M33 (Carousel CCW)

84. M38 (Door Open)

85. M39 (Door Close)

86. M62, M63, M64, M65, M66, M67

87. M7Ø (Mirror in X On)

88. M71 (Mirror in Y On)

89. M8Ø (Mirror in X Off)

90. M81 (Mirror in Y Off)

91. M98 (Sub Program Call)

92. M99 (Sub Program End and Return)