G-Code 101 With the Mike Mattera Autodesk HSM – Weekly Technical Webinar G-Code 101 With the Mike Mattera Mike Mattera Content Experience Developer mike.mattera@autodesk.com

HSM Weekly Webinar Origins of NC Programming Alpha Numeric Codes G - Code & Machine Motion Mike Mattera - Content Experience Developer (CXD) - CAM Origins of NC Programming Alpha Numeric Codes Basic Motion Codes “Canned” Motion Codes Modal Conditions & Code Groups Arc/Circular Move Formats What is a Postprocessor Basic Requirements For Writing Postprocessors

HSM Weekly Webinar Origins of NC/CNC Programming G - Code & Machine Motion Mike Mattera - Content Experience Developer (CXD) - CAM Origins of NC/CNC Programming Early 1950’s Using Punched Cards & Paper Tape Faster/Better Jet Engines & Airframe Components Air Force Standardized Code Formats In 1956 The First Programming System (APT) in 1957

HSM Weekly Webinar G Code Programming – Why Alpha Numeric Codes? G - Code & Machine Motion Mike Mattera - Content Experience Developer (CXD) - CAM G Code Programming – Why Alpha Numeric Codes? N#### G## X## Y## Z## F## S#### T## M## A simple way to define motion/function Declare a position Set a value Select an item Switch something on/off

HSM Weekly Webinar G Code & Machine Motion Mike Mattera - Content Experience Developer (CXD) - CAM G Code & Machine Motion There are 3 basic motion types Linear move to an XYZ position as fast as possible Linear move to an XYZ position at a defined feedrate Circular move to a position at a defined federate

HSM Weekly Webinar G Code & Machine Motion Mike Mattera - Content Experience Developer (CXD) - CAM G Code & Machine Motion Linear Rapid – G00 (G zero zero, not the letter O) Linear Feed – G01 Since there are two directions for a circle Circular CW – G02 Circular CCW – G03

HSM Weekly Webinar Typical CNC Machine Codes G - Code & Machine Motion Mike Mattera - Content Experience Developer (CXD) - CAM Typical CNC Machine Codes N#### G## X## Y## Z## F## S#### T## M## Generally defines motion – G## Declare a position - X## Y## Z## Set a value – F## - Feedrate or S### - Spindle Speed Select an item – T## - Tool Selection Switch something on/off - M## - Miscellaneous Functions

HSM Weekly Webinar Typical CNC Machine Codes G - Code & Machine Motion Mike Mattera - Content Experience Developer (CXD) - CAM Typical CNC Machine Codes N#### G## X## Y## Z## F## S#### T## M## Generally defines motion – G## Declare a position - X## Y## Z## Set a value – F## - Feedrate or S### - Spindle Speed Select an item – T## - Tool Selection Switch something on/off - M## - Miscellaneous Functions G01 X1. Y1. F20. T01 M03 S500

HSM Weekly Webinar Miscellaneous Codes – M Functions G - Code & Machine Motion Mike Mattera - Content Experience Developer (CXD) - CAM Miscellaneous Codes – M Functions M00     Program stop M01     Optional program stop M02     End of program M03     Spindle on clockwise M04     Spindle on counterclockwise M05     Spindle stop M06     Tool change M08     Flood Coolant on M09     Coolant off M30     End of program / Return to start M41 Spindle Low Gear Range M42 Spindle Hi Gear Range

HSM Weekly Webinar G - Code & Machine Motion Mike Mattera - Content Experience Developer (CXD) - CAM Modality – If it’s on, It stays on till you turn it off Only 1 function can be active at any given time Select a new function to deactivate the previous function Linear Rapid – G00 Linear Feed – G01 Circular CW – G02 Circular CCW – G03

HSM Weekly Webinar G - Code & Machine Motion Mike Mattera - Content Experience Developer (CXD) - CAM Modality – If it’s on, It stays on till you turn it off Only 1 function can be active at any given time Select a new function to deactivate the previous function Linear Rapid – G00 Linear Feed – G01 Circular CW – G02 Circular CCW – G03 G00 X1 Y1 X2 Y2 G01 X3 Y3 X2 Y2

HSM Weekly Webinar Canned Cycles - Drilling (G80 thru G89) G - Code & Machine Motion Mike Mattera - Content Experience Developer (CXD) - CAM Canned Cycles - Drilling (G80 thru G89) Incorporates all the motion of a common task Basic Drill Peck Drill Counter Bore Tapping G81 G83 G82 G84

HSM Weekly Webinar Canned Cycles - Drilling (G80 thru G89) G - Code & Machine Motion Mike Mattera - Content Experience Developer (CXD) - CAM Canned Cycles - Drilling (G80 thru G89) Drilling is Modal Once activated, only the hole locations need to be specified G81 X1.5 Y-1.5. R.1 Z-.25 F12.0 X3.5 Y-2.5 X2.5 G80

HSM Weekly Webinar Code Groups G - Code & Machine Motion Mike Mattera - Content Experience Developer (CXD) - CAM Code Groups Allows you to have multiple codes on a single line But only 1 code from each group per line The modal groups for G-codes are: Group 1 = {G00, G01, G02, G03, G80, G81, G82, G84, G85, G86, G87, G88, G89} Motion Group 2 = {G17, G18, G19} Plane Selection (XY, YZ, ZX) Group 3 = {G90, G91} Absolute / Incremental mode Group 5 = {G93, G94} Feed Rate Mode Group 6 = {G20, G21} Units (Inches / Millimeters) Group 7 = {G40, G41, G42} Cutter Radius Compensation (CRC) Group 8 = {G43, G49} Tool Length Offset (TLO) Group 10 = {G98, G99} Return Mode in Canned Cycles Group 12 = {G54. G55, G56, G57, G58, G59, G59.xxx} Work Coordinate System Selection (WCS)

HSM Weekly Webinar All CNC Code Is Not “G Code” G - Code & Machine Motion Mike Mattera - Content Experience Developer (CXD) - CAM All CNC Code Is Not “G Code” All machines require the same information Not all information looks the same That’s why we have 1000 Postprocessor in the library

HSM Weekly Webinar Creating an Arc/Circular move G - Code & Machine Motion Mike Mattera - Content Experience Developer (CXD) - CAM Creating an Arc/Circular move Arc Start Point (Green Dot) Arc Cutting Direction – CW/CCW (Blue Arrows) Arc End Point (Red Dot) Arc Center Point or Radius Size (Black Cross/Arrows)

HSM Weekly Webinar Creating an Arc/Circular move G - Code & Machine Motion Mike Mattera - Content Experience Developer (CXD) - CAM Creating an Arc/Circular move Fanuc/Haas G2 X4.5 Y-1.0 I0.0 J-1.5 F7.5 Fanuc/Haas G2 X4.5 Y-1.0 R-1.0 F7.5 Anilam 1100/3300 Arc Cw X4.500 Y-1.000 XCenter 3.000 YCenter -1.000 Feed 7.5 Arc Cw X4.500 Y-1.000 Radius 1.000 Feed 7.5 or Heidenhain CC X3.0 Y-1.0 CW X4.5 Y-1.0 F7.5 Heidenhain CC X3.0 Y-1.0 CP PA90 DR- F7.5 Heidenhain CR X3.0 Y-1.0 DR- R1. F7.5

HSM Weekly Webinar Postprocessors A Postprocessor is a translator. G - Code & Machine Motion Mike Mattera - Content Experience Developer (CXD) - CAM Postprocessors A Postprocessor is a translator. It translates the image of the toolpath on your screen into the language for a specific machine/control. O0001 N10 G20 G90 G94 G17 N10 G40 G80 N12 G28 G91 Z0 H0 N14 G28 X0 Y0 N18 T01 M06 (1.0 End Mill) N24 S1200 M3 N26 G0 X-0.75 Y0.5 N28 G43 H01 Z0.1 H01 M9 N30 Z0.1 N32 X-0.625 N34 G94 G1 Z-1.0 F20.0 N36 X-0.125 F6.0 N38 X3.0 N40 G2 X4.5 Y-1.0 I0.0 J-1.5 F7.5 N42 G1 Y-3.5 F6.0 N44 X4.0 N46 G3 X3.5 Y-4.0 I0.0 J-0.5 F4.5 N48 G1 Y-4.5 F6.0 N50 X0.75 N52 G2 X-0.5 Y-3.25 I0.0 J1.25 F7.5 N54 G1 Y0.125 F6.0 N58 G0 Z0.1 N60 G1 Y0.75 Z-1.0 F20.0 N62 M30 %

HSM Weekly Webinar Creating a Postprocessor – Requirements G - Code & Machine Motion Mike Mattera - Content Experience Developer (CXD) - CAM Creating a Postprocessor – Requirements Machine mfg. Name & Model, Control Name & Model Type, # of Axis, Axis designations (Vertical Mill, 4 Axis, X,Y,Z,A) List of the G-Codes / M-Codes for the machine Sample Program using the Post Test Part (available to all customers) The sample program should have been successfully run in the machine with no errors

Thank You HSM Weekly Webinar – G Code Programming Mike Mattera Content Experience Developer (CXD) – CAM - mike.mattera@autodesk.com