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Lecture "CNC programming basics" provides students with the knowledge: Program start, program contents , program end (CNC programming basics, CNC programming basics, CNC program blocks, absolute value programming, reference points,.). Invite you to refer to the disclosures. | CNC Programming Basics Program structure Every program consists of: Program Start The program start is the program number. The program number begins with character/letter O. Program Contents NC blocks Program End M30 for a main program M17 for a sub-program CNC Prg. Basics Computer Numeric Control @ UPH By Jonny Latuny, M.Eng © August 2002 CNC Program Numbers Program Numbers O6999 . . . O0256 O0255 . . . O0000 CNC Prg. Basics Computer Numeric Control @ UPH By Jonny Latuny, M.Eng © August 2002 CNC Program Blocks (1) N is the address Block numbers from N0000 to N9999 A block consists of number and words Words are contents of a block Block numbers are selected in the jumps of ten for the purpose of insertion CNC Prg. Basics Computer Numeric Control @ UPH By Jonny Latuny, M.Eng © August 2002 CNC Program Blocks (2) A block consists of one or more blocks A Word consists of a character (address) and a number. Every address has a certain meaning, on which the corresponding number | CNC Programming Basics Program structure Every program consists of: Program Start The program start is the program number. The program number begins with character/letter O. Program Contents NC blocks Program End M30 for a main program M17 for a sub-program CNC Prg. Basics Computer Numeric Control @ UPH By Jonny Latuny, M.Eng © August 2002 CNC Program Numbers Program Numbers O6999 . . . O0256 O0255 . . . O0000 CNC Prg. Basics Computer Numeric Control @ UPH By Jonny Latuny, M.Eng © August 2002 CNC Program Blocks (1) N is the address Block numbers from N0000 to N9999 A block consists of number and words Words are contents of a block Block numbers are selected in the jumps of ten for the purpose of insertion CNC Prg. Basics Computer Numeric Control @ UPH By Jonny Latuny, M.Eng © August 2002 CNC Program Blocks (2) A block consists of one or more blocks A Word consists of a character (address) and a number. Every address has a certain meaning, on which the corresponding number depends CNC Prg. Basics Computer Numeric Control @ UPH By Jonny Latuny, M.Eng © August 2002 CNC Prg. Syntax Regulations The maximum block length must not exceeded four lines. If max. length exceeded alarm 650 occurs. Every block starts with a block number. After the block numbers follows the G command. Words consists of coordinates X(U), Z(W). For G02, G03 program interpolation parameter I and K are placed after X(U), Z(W). The F word (feed, thread pitch). The S word (cutting speed). The T word (tool address). The M word (additional functions). CNC Prg. Basics Computer Numeric Control @ UPH By Jonny Latuny, M.Eng © August 2002 Absolute Value Programming P0 N P0 P1 N G01 X40. Z25. F P1 P2 N G01 X60. Z-40. F P2 N Absolute coordinate system Example: CNC Prg. Basics Computer Numeric Control @ UPH By Jonny Latuny, M.Eng © August 2002 Incremental Value Programming Incremental coordinate system Example: P0 N P0 P1 N G01 U5. W-25. F P1 P2 N G01 X10. .
