word address programming cnc mill. basic programing terms a. character digit letter symbols b. word...
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ALPHA NUMERICAL PROGRAM INPUT
Word address programmingCNC Mill
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Basic Programing Terms• a. Character• Digit• Letter• Symbols• b. Word• c. Block• d. Program Format
Combination of digit, letter, symbol is called: Alpha – Numerical Program Input Word address programming
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• A. Program Number ( O _ _ _ _) 1. range from O 0001 through O9999 2. Letter O plus a four digit number 3. The only time letter o is used in program
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Sequence Number
• B. Sequence Number (N_ _ _ _ ) indicates the sequence number of the block 1. Range from N0001 through N9999 2. Letter N plus a four digit number
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• C. Spindle Speed (S _ _ _ _ ) 1. Range from S150 through S6000) 2. Letter S plus a three or four digit number)
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• D. Feed rate (F _ _ _. _ _ )• Designates the relative speed of the cutting tool with respect to the work
1. Range from F .04 through F 196.00 2. Letter F plus a number and a decimal point 3. programming in inches per minute (ipm)
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Tool Function
• E. Tool Number (T _ _ )• Designates the number of the tools to be used
1. range from T1 through T 20 2. Letter T plus a number
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Input Function
• F. H Codes ( H _ _ ) 1. range from H 1 through H20 2. letter H plus a number 3. H codes are tool offset registers and must correspond precisely to tool numbers, i.e., T1 &H1, T2 & H2,
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Input Function
• G. D Codes ( D _ _ ) 1. range from D 1 through D20 2. letter D plus a number 3. D codes are tool diameter offset registers and must correspond precisely to tool numbers, i.e., T1 &H1, D1
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• H. X Dimension (X _ _ _ . _ _ _ _) 1. letter X plus a number and a decimal point in all instances expect when X = 0 2. leading and trailing zeroes can be omitted in all dimensioning addresses• I. Y Dimension (Y_ _ _ . _ _ _ _)• J. Z Dimension ( _ _ . _ _ _ )
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G codes , M codes
• G code: Preparatory Function are used to set the control for various machine movement such as:
• Linear interpolation G01• Rapid travers G00• Circular interpolation G02, G03
• M code: Miscellaneous function direct the controller to execute the function indicated such :
• End of program M02, M30• Tool Change M06• Turn the coolant off M09
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• Address:• G00 X-.375 S 800 F 8 M06 T 2 D05
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• Words:• N0020• G90• G00 • X-2.5 • Y 3.75 • S1000 • ;
• Block
• N0020 G90 G00 X-2.5 Y 3.75 S1000 ;
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Part Programming• A part program is simply a series of command blocks that execute motions and
machine functions to manufacture a part
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End of presentation
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