Chaptcr 6 NC Programniing

6. NC PROGRAMMJJNG

G CODE / DYNA CODE LIST

G DYNA CODE CODE DESCR1PTION TYPE

G00 GOF Rapid Traverse Modal . G01 GO Linear Interpolation (feed) Modal G02 ARCL Circular Interpolation (clock-wise) Modal G02.1 SPLL S piral are (CW) Non-modal G03 ARCR Circular Interpolation (counter-clockwise) Modal G03.1 SPLR Spiral are (CCW) Non-modal G04 DWELL Dwell Non-modal G08 ARC Are (through mid point) Non-modal G12 cniL Finish Are (CW) Non-modal G13 CIRR Finish Are (CCW) Non-modal G16 Y U 4th axis conversión to Y axis Modal G17 X Y X Y plañe selection Modal G18 XZ XZ plañe selection Modal G19 YZ YZ plañe selection Modal G20 m Inch system selection Modal G21 M M Metric system selection Modal G22 CONTOUR Contour milling eyele Non-modal G23 PKT Universal pocket milling eyele Non-modal G24 RECT PKT R-ectangular pocket eyele Non-modal G25 CTR PKT Circle pocket eyele Non-modal G26 DDE F Female die milling eyele Non-modal G27 DDE M Male die milling eyele Non-modal G28 GO HOME Zero retura Non-modal G34 CIR CYC Bolt circle Non-modal G35 U N E CYC Holes on a line eyele Non-modal G36 ARC CYC Holes on an are eyele Non-modal G37 RECT CYC Holes in a grid eyele Non-modal G40 OFF COMP Cancel X Y cutter compensation Modal G41 COMP L Cutter compensation, tool left side Modal G42 COMP R Cutter compensation, tool right side Modal G43 COMP TL Cutter compensation, tool length Modal G49 OFF TL Tool length compensation cancel Modal G50 OFF TRAN Translated eyele cancel Modal G51 SCALE Translation eyele - Scale Modal G51.1 MIRROR Translation eyele - Mrror Modal

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Chapter 6 NC Prograrruning

G51.2 X Y Z Translation cycle - X Y Z tilted plañe Modal G52 ZERO AT Set local zero Modal G53 COORDO Machine coordínate Modal G54 COORD1 First work offset coordínate Modal G55 COORD2 2nd work offset coordínate Modal G56 COORD3 3rd work offset coordínate Modal G57 COORD4 4th work offset coordínate Modal G58 COORD5 5th work offset coordínate Modal G59 COORD6 6th work offset coordínate Modal G68 ROTATE Rotate Modal G73 STEP CYC Step cycle drill Modal G74 TAP REV Reverse tap Modal G76 BORE F Fine boring Modal G80 Cancel drilling cycle Modal G81 DRILL Drill cycle Modal G82 DRILL P Drill cycle with dwell Modal G83 DRILL Q Drill peck cycle Modal G84 TAP Tapping cycle Modal G85 BORE Fine boring cycle Modal G86 BORE P Boring cycle Modal G87 BORE B Boring cycle Modal G88 BORE M Boring cycle Modal G89 BORE S Boring cycle Modal G90 ABS Absolute mode Modal G91 INC Incremental mode Modal G92 CURRENT Set zero Modal G94 F MTN ¡ Feed rate in mm/Min. Modal G95 F REV l

1 Feed rate in mm/F ev. Modal

G98 END ZO Rerum to initial point Modal G99 END R Return to "R" plañe Modal

SMOOTH= Change smooth rate Modal ZFEED= Change Z feed rate in canned cycle Modal

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Chapter 6: NC Programming

M C O D E S

C O D E D E S C R I P T I O N M00 Program Stop M01 Optional Stop M02 Program End M03 Spindle Forward M04 Spindle Reverse M05 Spindle Off M06 Tool Change (optional - not require M08 Coolant On M09 Coolant Off MÍ 0 Automatic spare tool change M19 Spindle Orient M22 Send PLC Sync. signal M23 Wait for PLC Sync. signal M24 Turn off PLC Sync. signal M25 Load counter M26 Start count down M30 Program End M31 Turn on the 2nd coolant pump M32 Turn off the 2nd coolant pump M35 Chip conveyor forward M36 Chip conveyor backward M37 Stop Chip conveyor M39 Automatic Power Off M40 U axis lock M41 U axis reléase M42 Automatic tool length setup M60 Reset Status Flag M61 Set Status Flag M62 Wait For A Signal M64 Skip M65 Direct command to driver M70 Cali DNC M71 If M72 Goto M73 Repeat M74 Repeat End M75 End of NC program M76 Start executing new NC program M77 Mark A Block Start M78 Mark A Block End M79 Cali Error Message

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Chapter 6: NC Programming

M80 Calcúlate Spindle Speed M81 Tool parameter exchange M82 Tool Data Exchange M84 Spindle Control Mode M85 Passive tapping parameter setting M86 Write PLC variable M87 Push System Stalus To Stack M88 Pop System Status To Stack M89 Show Message M90 Passive tapping start M98 Cali Subroutine M99 Subroutine End

** Shaded commands are designed only for system developers or advance users.

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Chapter 6: NC Programming

Coordínate Systems

Coordínate systems allow the posítions of a work-píece to be logícally transferred frem a biueprint or drawing to a location on a machine tool.

The following figure describes the axis directions on a Vertical milling machine. The arrow direction specifies the actual movement direction of the work table. The small coordínate frame on the rights shows the relative cutter movement direction.

Again, coordínate systems are used to describe the path and tocí position relative to the work-piece and machine. There are three levéis coordinates in the 4M CNC system: machine coordinates, work offset coordinates, and locai coordinates.

Machine coordinates

The machine coordínate system has a fixed position which ¡s determined inherently by the design of the machine. Some positions such as the tool change position, limit swítch posítions etc. can not be altered. The machine coordínate system is known as the G53 coordínate system or also referred to as machine zero or home reference point. The máximum allowed movement range of the spindle and the rectangular región in X Y Z direction is, respectively, the valid travel of each axis according to the G53.

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N G (M)

X (J) (D) '

Y (K) (S)

Z F (L) (T) (H)

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