cnc turning G codes

OFTEN USED PREPARATORY “G” CODES

G00 Rapid traverse motion; Used for non-cutting moves of the machine in positioning quick

to a location to be machined, or rapid away after program cuts have been performed.

Maximum rapid motion (I.P.M.) of a Haas machine will vary on machine model.

G01 Linear interpolation motion; Used for actual machining and metal removal.

Governed by a programmed feed rate in inches (or mm) per revolution (G99).

Maximum feed rate (I.P.M.) of a Haas machine will vary on machine model.

(Inch Per Minute = R.P.M. x Inch Per Revolution).

G02 Circular Interpolation - Clockwise.

G03 Circular Interpolation - Counterclockwise.

G28 Machine Home (Rapid traverse)

G40 Tool Nose Compensation CANCEL

G41 Tool Nose Compensation LEFT of the programmed path

G42 Tool Nose Compensation RIGHT of the programmed path

G50 Spindle Speed Maximum RPM limit

G70 Finishing Cycle

G71 O.D./I.D. Stock Removal Cycle

G72 End Face Stock Removal Cycle

G76 O.D./I.D. Thread Cutting Cycle

G80 Cancel Canned Cycle

G81 Drill Canned Cycle

G82 Spot Drill Canned Cycle

G83 Peck Drill Canned Cycle

G84 Tapping Canned Cycle

G96 Constant Surface Speed On

G97 Constant Surface Speed Cancel

G98 Feed Per Minute

G99 Feed Per Revolution